CN112142942A - Washable antibacterial mildew-proof memory foam and application thereof - Google Patents
Washable antibacterial mildew-proof memory foam and application thereof Download PDFInfo
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/10—Pillows
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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- C08G18/40—High-molecular-weight compounds
- C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
- C08G18/632—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto polyethers
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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- C08G2101/00—Manufacture of cellular products
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Abstract
The application relates to the technical field of polyurethane foam materials, and aims to provide a washable antibacterial mildew-proof memory foam which is characterized by being prepared from the following raw materials in parts by weight: 60-85 parts of common polyether polyol, 10-35 parts of slow rebound polyether polyol, 10-20 parts of latex-like polyether, 10-20 parts of hydrophobic polyol polyether, 5-10 parts of modified polymer polyol, 8-12 parts of temperature-sensitive polyether, 0.5-1.2 parts of chain extender, 0.3-1 part of chain extension cross-linking agent, 0.8-1.5 parts of catalyst, 1.5-3 parts of foaming agent, 0.5-1 part of foam stabilizer, 0.8-1.6 parts of silicone oil, 40-65 parts of isocyanate and 0.3-1.2 parts of antibacterial mildew inhibitor. The product has the advantages of good washing resistance and quick drying property, and remarkable antibacterial and mildewproof properties.
Description
Technical Field
The application relates to the technical field of polyurethane foam materials, in particular to washable antibacterial mildew-proof memory foam and application thereof.
Background
Memory Foam (Memory Foam), also known as slow-rebound sponge, is a polyurethane high-molecular polymer with an Open-cell structure (Open-cell), and the material has remarkable viscoelasticity and softness characteristics and strong impact energy absorption capacity. The Open-cell structure (Open-cell) of the memory foam can generate 'flow' to shift and deform when being pressed by external force, and the material can uniformly and slowly rebound by the contact surface of the attached pressing object under the action of intermolecular van der waals force, so that the pressure is uniformly dispersed to the whole contact surface, and the deformed material can slowly recover to the original shape when the pressure is eliminated. Therefore, the memory foam is also widely applied to pillow interiors, cushions, back cushions and the like, and the comfort level and experience of users are obviously improved.
The polyurethane memory foam commonly used for manufacturing the pillow inner generally has a slow rebound memory effect, but the existing polyurethane memory foam product generally cannot be washed by water, is easy to deform when meeting water, is accelerated to age, has poor water washability, has high water absorption and is not easy to dry, so that the existing polyurethane memory foam product is easy to breed bacteria and mildew, and the sanitation of product use is influenced.
In view of the above-mentioned related technologies, the inventor considers that the current polyurethane memory foam product has poor water washability and is not easy to clean and dry in practical use, so that the antibacterial and mildewproof performance of the product is poor and needs to be further improved.
Disclosure of Invention
In order to improve the water washability and quick-drying property of the polyurethane memory foam and further improve the antibacterial and anti-mildew performance of a polyurethane memory foam product, the application provides the water-washable antibacterial and anti-mildew memory foam and a preparation method thereof.
In a first aspect, the application provides a washable antibacterial mildewproof memory sponge, which adopts the following technical scheme:
a washable antibacterial mildew-proof memory foam is prepared from the following raw materials in parts by weight: 60-85 parts of common polyether polyol, 10-35 parts of slow rebound polyether polyol, 10-20 parts of latex-like polyether, 10-20 parts of hydrophobic polyether polyol, 5-10 parts of modified polymer polyol, 0.5-1.2 parts of chain extender, 0.3-1 part of chain extending cross-linking agent, 0.8-1.5 parts of catalyst, 1.5-3 parts of foaming agent, 0.5-1 part of foam stabilizer, 0.8-1.6 parts of silicone oil, 40-65 parts of isocyanate and 0.3-1.2 parts of antibacterial mildew inhibitor.
By adopting the technical scheme, as the slow rebound polyether polyol, the latex-like polyether and the common polyether polyol are matched, a honeycomb type particle structure which is visible to naked eyes and is uniformly distributed can be formed after the polyether polyol, the isocyanate and the microporous structure are subjected to polymerization reaction, the sizes of micropores in the particle structure and the elasticity of microporous walls tend to be consistent, air enters and exits the micropores more uniformly and smoothly, and the slow rebound effect is obviously improved; the latex-like polyether can remarkably improve and enhance the microporous structure of the polyurethane material, improve the elasticity adjustment adaptability and air permeability of the microporous structure, and can remarkably improve the moisture permeability and quick-drying performance of the product; hydrophobic groups can be introduced into polymer molecular chains by adding the hydrophobic polyol polyether, so that the water repellency of the polymer molecules is improved, the water absorption of a microporous structure is reduced, and the water washing resistance of the material is further improved; the modified polymer polyol is organic filling polyether polyol, and the addition of the modified polymer polyol in the formula can improve the bearing capacity and resilience of the polymer material and promote the improvement of the mechanical property of the microporous structure; the antibacterial mildew preventive is added in the formula, and the antibacterial mildew preventive can be uniformly dispersed in a microporous structure along with the mutual reaction of the components, so that the polymer material has a lasting and efficient antibacterial mildew preventive effect, and the sanitary performance of the product is remarkably improved.
Preferably, the weight portion of the slow rebound polyether polyol is 15-30 parts, and the weight portion of the latex-like polyether is 12-18 parts.
By adopting the technical scheme, the related performance of the polyurethane material prepared by final reaction can be further improved by optimizing the addition amounts of the slow-rebound polyether polyol and the latex-like polyether, and the use quality of the product is improved.
Preferably, the common polyether polyol comprises two mixtures of polyether polyol A with a hydroxyl value of 54-58mgKOH/g and polyether polyol B with a hydroxyl value of 33-37mgKOH/g, and the acid value of the polyether polyol A, B mixture is 0.05-0.08 mgKOH/g.
By adopting the technical scheme, the polyether polyol A with the hydroxyl value of 54-58mgKOH/g and the polyether polyol B with the hydroxyl value of 33-37mgKOH/g are compounded and mixed, the progress of polyurethane polymerization reaction can be controlled by adjusting the hydroxyl value of common polyether polyol, so that the reaction is more controllable, and the polymer material prepared by the reaction has more excellent material performance; by controlling the acid value of the polyether polyol mixture to be 0.08-0.05mgKOH/g, the hydroxyl value of the polyether polyol mixture can be better matched, and the effect of further effectively controlling the progress of the isocyanate participating in the polymerization reaction is achieved.
Preferably, the hydroxyl value of the slow rebound polyether polyol is 298-318mgKOH/g, and the acid value of the slow rebound polyether polyol is 0.05-0.10 mgKOH/g.
By adopting the technical scheme, the slow rebound polyether polyol with proper hydroxyl value and acid value is selected, the reaction process of the polymer can be further controlled, the number of micropores formed by the internal reaction of the polymer and the uniformity and evenness of the distribution of the micropore structure are optimized, and the slow rebound adaptability effect of the polyurethane material is further improved.
Preferably, the hydrophobic polyether polyol has a hydroxyl value of 55 to 57mgKOH/g, a molecular weight of 2000 and a functionality of 2.
By adopting the technical scheme, the hydrophobic polyether polyol with the hydroxyl value of 55-57mgKOH/g, the molecular weight of 2000 and the functionality of 2 can better control and optimize the number of hydrophobic groups introduced into a polymer molecular chain, so that the polymer has better hydrophobicity, and the water washing resistance and the quick-drying performance of the product are effectively improved.
Preferably, the modified polymer polyol is a silane-modified polymer polyol.
By adopting the technical scheme, the silane modified polymer polyol is modified by introducing silane into a polymer polyol molecular chain, so that the activity of terminal hydroxyl is improved, and then the silane modified polymer polyol reacts with isocyanate groups, so that a polyurethane molecular chain contains silane chain segments, the washing resistance and aging resistance of a polymer material are improved, the mechanical property of a microporous structure is promoted, and the bearing capacity and resilience of the material are further improved.
Preferably, the amine catalyst is triethylene diamine, the organic tin catalyst is dibutyltin dilaurate, and the mass ratio of the triethylene diamine to the dibutyltin dilaurate is 1: (0.5-1).
By adopting the technical scheme, triethylene diamine can promote a foaming reaction in the synthesis reaction of the polyurethane elastomer, dibutyltin dilaurate can effectively reduce the side reaction of OH in the catalysis of HO and NCO reaction processes as an organic tin catalyst, and the consistency of the reaction activity of high molecular mass polyol and low molecular mass polyol is improved.
Preferably, the antibacterial mildew preventive is zinc pyrithione antibacterial mildew preventive.
By adopting the technical scheme, the zinc pyrithione is a safe, efficient and broad-spectrum antibacterial mildew preventive, and can effectively improve the antimicrobial property of the material and inhibit the growth of bacteria and mildew of products when being added into the polyurethane foam sponge material. Meanwhile, the zinc pyrithione antibacterial mildew inhibitor has stable chemical property, can resist the high temperature of more than 200 ℃, does not influence the foaming reaction of the polymer, can be uniformly dispersed in a reaction system, and has lasting and high-efficiency antibacterial effect.
Preferably, the raw materials of the product also comprise 8-12 parts of temperature-sensitive polyether.
By adopting the technical scheme, the temperature-sensitive polyether is also a slow-resilience polyether, so that on one hand, the slow resilience performance of the polymer can be further improved, and the deformation memory recovery effect of the material is improved; on the other hand, the temperature-sensitive polyether can remarkably improve the weather resistance and the moisture resistance of the material, so that the polyurethane foam material can keep the stability of the overall elasticity and the slow rebound effect when the environmental temperature and the humidity change, the hardness cannot obviously change, and the stability and the use experience of the use performance of the material are kept.
In a second aspect, the application provides an application of the washable antibacterial mildewproof memory foam, which adopts the following technical scheme:
the water-washable antibacterial mildew-proof memory foam can be applied to the preparation of pillow cores, mattresses, cushions and back cushions.
By adopting the technical scheme, the washable antibacterial mildew-proof memory cotton is used for preparing the pillow core, the mattress, the cushion, the back cushion and the like, the washable characteristic of the memory cotton can be fully utilized, the water washing resistance of the product is improved, the performance of the product, which is easy to clean and maintain, is improved, and meanwhile, the sanitary characteristic of the applied product is also effectively improved.
In summary, the present application has the following beneficial effects:
1. the slow rebound polyether polyol, the latex-like polyether and the common polyether polyol are matched, a honeycomb type particle structure which is visible to naked eyes and is uniformly distributed can be formed after the slow rebound polyether polyol, the latex-like polyether and the common polyether polyol are subjected to polymerization reaction with isocyanate, the sizes of micropores in the particle structure and the elasticity of micropore walls tend to be consistent, air enters and exits the micropores more uniformly and smoothly, and the slow rebound effect is obviously improved; the latex-like polyether can remarkably improve and enhance the microporous structure of the polyurethane material, improve the elasticity adjustment adaptability and air permeability of the microporous structure, and can remarkably improve the moisture permeability and quick-drying performance of the product; hydrophobic groups can be introduced into polymer molecular chains by the hydrophobic polyol polyether, so that the water repellency of polymer molecules is improved, the water absorption of a microporous structure is reduced, and the water washing resistance of the material is further improved; the modified polymer polyol can improve the bearing capacity and resilience of the polymer material and promote the improvement of the mechanical property of the microporous structure; the antibacterial mildew preventive can be uniformly dispersed in the microporous structure along with the mutual reaction of the components, so that the polymer material has a lasting and efficient antibacterial mildew-proof effect, and the hygienic performance of the product is remarkably improved.
Detailed Description
The present application will be described in further detail with reference to examples.
Examples
Some of the raw materials in the examples of this application are as follows:
polyether polyol A is ZS-2802 polyether polyol of Jiangsu Ching chemical industry Co., Ltd, polyether polyol B is ZS-3602 polyether polyol of Jiangsu Ching chemical industry Co., Ltd, slow-rebound polyether polyol is LW-1030 product of Jiangsu Ching chemical industry Co., Ltd, hydrophobic polyether polyol is Dow D3201 polyether polyol purchased from Shanghai Xiangkang science and technology development Co., Ltd, temperature-sensitive polyether is BDM-107 product of Huai Andad polyurethane science and technology Co., Ltd, and modified polymer polyol is Dow 604 polyether polyol purchased from Shanghai Xiangkang science and technology development Co., Ltd.
The embodiment of the application discloses a washable antibacterial mildew-proof memory foam.
Example 1: a washable antibacterial mildew-proof memory foam is prepared from the following raw materials in parts by weight: 60 parts of common polyether polyol, 10 parts of slow rebound polyether polyol, 10 parts of latex-like polyether, 10 parts of hydrophobic polyether polyol, 8 parts of temperature-sensitive polyether, 5 parts of modified polymer polyol, 0.5 part of chain extender, 0.3 part of chain extending cross-linking agent, 0.8 part of catalyst, 1.5 parts of foaming agent, 0.5 part of foam stabilizer, 0.8 part of silicone oil, 40 parts of isocyanate and 0.3 part of antibacterial mildew inhibitor;
wherein the common polyether polyol comprises a mixture of polyether polyol A with a hydroxyl value of 54mgKOH/g and polyether polyol B with a hydroxyl value of 33mgKOH/g in a mass ratio of 1:1, and the acid value of the polyether polyol A, B mixture is 0.05 mgKOH/g; the hydroxyl value of the slow rebound polyether polyol is 298mgKOH/g, and the acid value of the slow rebound polyether polyol is 0.05 mgKOH/g; the hydrophobic polyether polyol has a hydroxyl value of 55mgKOH/g, a molecular weight of 2000 and a functionality of 2; the modified polymer polyol is silane modified polymer polyol; the amine catalyst is triethylene diamine, the organic tin catalyst is dibutyltin dilaurate, the mass ratio of the triethylene diamine to the dibutyltin dilaurate is 1:0.5, and the antibacterial mildew preventive is zinc pyrithione antibacterial mildew preventive.
Example 2: a washable antibacterial mildew-proof memory foam is prepared from the following raw materials in parts by weight: 65 parts of common polyether polyol, 15 parts of slow rebound polyether polyol, 12 parts of latex-like polyether, 12 parts of hydrophobic polyether polyol, 9 parts of temperature-sensitive polyether, 6 parts of modified polymer polyol, 0.6 part of chain extender, 0.5 part of chain extension cross-linking agent, 0.9 part of catalyst, 1.8 parts of foaming agent, 0.6 part of foam stabilizer, 0.9 part of silicone oil, 45 parts of isocyanate and 0.5 part of antibacterial mildew inhibitor;
wherein the common polyether polyol comprises a mixture of polyether polyol A with a hydroxyl value of 55mgKOH/g and polyether polyol B with a hydroxyl value of 34mgKOH/g in a mass ratio of 1:1, and the acid value of the polyether polyol A, B mixture is 0.05 mgKOH/g; the hydroxyl value of the slow rebound polyether polyol is 302mgKOH/g, and the acid value of the slow rebound polyether polyol is 0.06 mgKOH/g; the hydrophobic polyether polyol has a hydroxyl value of 55mgKOH/g, a molecular weight of 2000 and a functionality of 2; the modified polymer polyol is silane modified polymer polyol; the amine catalyst is triethylene diamine, the organic tin catalyst is dibutyltin dilaurate, the mass ratio of the triethylene diamine to the dibutyltin dilaurate is 1:0.6, and the antibacterial mildew preventive is zinc pyrithione antibacterial mildew preventive.
Example 3: a washable antibacterial mildew-proof memory foam is prepared from the following raw materials in parts by weight: 70 parts of common polyether polyol, 20 parts of slow rebound polyether polyol, 15 parts of latex-like polyether, 15 parts of hydrophobic polyol polyether, 10 parts of temperature-sensitive polyether, 7 parts of modified polymer polyol, 0.7 part of chain extender, 0.6 part of chain extension cross-linking agent, 1.1 part of catalyst, 2.1 parts of foaming agent, 0.7 part of foam stabilizer, 1.1 part of silicone oil, 50 parts of isocyanate and 0.7 part of antibacterial mildew inhibitor;
wherein the common polyether polyol comprises a mixture of polyether polyol A with a hydroxyl value of 56mgKOH/g and polyether polyol B with a hydroxyl value of 35mgKOH/g in a mass ratio of 1:1, and the acid value of the polyether polyol A, B mixture is 0.06 mgKOH/g; the hydroxyl value of the slow rebound polyether polyol is 306mgKOH/g, and the acid value of the slow rebound polyether polyol is 0.07 mgKOH/g; the hydrophobic polyether polyol has a hydroxyl value of 56mgKOH/g, a molecular weight of 2000 and a functionality of 2; the modified polymer polyol is silane modified polymer polyol; the amine catalyst is triethylene diamine, the organic tin catalyst is dibutyltin dilaurate, the mass ratio of the triethylene diamine to the dibutyltin dilaurate is 1:0.7, and the antibacterial mildew preventive is zinc pyrithione antibacterial mildew preventive.
Example 4: a washable antibacterial mildew-proof memory foam is prepared from the following raw materials in parts by weight: 75 parts of common polyether polyol, 25 parts of slow rebound polyether polyol, 18 parts of latex-like polyether, 18 parts of hydrophobic polyether polyol, 11 parts of temperature-sensitive polyether, 8 parts of modified polymer polyol, 0.9 part of chain extender, 0.7 part of chain extending cross-linking agent, 1.3 parts of catalyst, 2.4 parts of foaming agent, 0.8 part of foam stabilizer, 1.3 parts of silicone oil, 55 parts of isocyanate and 0.9 part of antibacterial mildew inhibitor;
wherein the common polyether polyol comprises a mixture of a polyether polyol A with a hydroxyl value of 57mgKOH/g and a polyether polyol B with a hydroxyl value of 36mgKOH/g in a mass ratio of 1:1, and the acid value of the polyether polyol A, B mixture is 0.06 mgKOH/g; the hydroxyl value of the slow rebound polyether polyol is 310mgKOH/g, and the acid value of the slow rebound polyether polyol is 0.08 mgKOH/g; the hydrophobic polyether polyol has a hydroxyl value of 56mgKOH/g, a molecular weight of 2000 and a functionality of 2; the modified polymer polyol is silane modified polymer polyol; the amine catalyst is triethylene diamine, the organic tin catalyst is dibutyltin dilaurate, the mass ratio of the triethylene diamine to the dibutyltin dilaurate is 1:0.8, and the antibacterial mildew preventive is zinc pyrithione antibacterial mildew preventive.
Example 5: a washable antibacterial mildew-proof memory foam is prepared from the following raw materials in parts by weight: 80 parts of common polyether polyol, 30 parts of slow rebound polyether polyol, 19 parts of latex-like polyether, 19 parts of hydrophobic polyether polyol, 12 parts of temperature-sensitive polyether, 9 parts of modified polymer polyol, 1.0 part of chain extender, 0.9 part of chain extending cross-linking agent, 1.4 parts of catalyst, 2.7 parts of foaming agent, 0.9 part of foam stabilizer, 1.5 parts of silicone oil, 60 parts of isocyanate and 1.1 parts of antibacterial mildew inhibitor;
wherein the common polyether polyol comprises a mixture of polyether polyol A with a hydroxyl value of 58mgKOH/g and polyether polyol B with a hydroxyl value of 37mgKOH/g in a mass ratio of 1:1, and the acid value of the polyether polyol A, B mixture is 0.07 mgKOH/g; the hydroxyl value of the slow rebound polyether polyol is 314mgKOH/g, and the acid value of the slow rebound polyether polyol is 0.09 mgKOH/g; the hydrophobic polyether polyol has a hydroxyl value of 57mgKOH/g, a molecular weight of 2000 and a functionality of 2; the modified polymer polyol is silane modified polymer polyol; the amine catalyst is triethylene diamine, the organic tin catalyst is dibutyltin dilaurate, the mass ratio of the triethylene diamine to the dibutyltin dilaurate is 1:0.9, and the antibacterial mildew preventive is zinc pyrithione antibacterial mildew preventive.
Example 6: a washable antibacterial mildew-proof memory foam is prepared from the following raw materials in parts by weight: 85 parts of common polyether polyol, 35 parts of slow rebound polyether polyol, 20 parts of latex-like polyether, 20 parts of hydrophobic polyol polyether, 12 parts of temperature-sensitive polyether, 10 parts of modified polymer polyol, 1.2 parts of chain extender, 1.0 part of chain extension cross-linking agent, 1.5 parts of catalyst, 3 parts of foaming agent, 1.0 part of foam stabilizer, 1.6 parts of silicone oil, 65 parts of isocyanate and 1.2 parts of antibacterial mildew preventive;
wherein the common polyether polyol comprises a mixture of polyether polyol A with a hydroxyl value of 58mgKOH/g and polyether polyol B with a hydroxyl value of 37mgKOH/g in a mass ratio of 1:1, and the acid value of the polyether polyol A, B mixture is 0.08 mgKOH/g; the hydroxyl value of the slow rebound polyether polyol is 318mgKOH/g, and the acid value of the slow rebound polyether polyol is 0.10 mgKOH/g; the hydrophobic polyether polyol has a hydroxyl value of 57mgKOH/g, a molecular weight of 2000 and a functionality of 2; the modified polymer polyol is silane modified polymer polyol; the amine catalyst is triethylene diamine, the organic tin catalyst is dibutyltin dilaurate, the mass ratio of the triethylene diamine to the dibutyltin dilaurate is 1:1, and the antibacterial mildew preventive is zinc pyrithione antibacterial mildew preventive.
Comparative example
Comparative example 1: a washable antibacterial mildewproof memory foam, which is different from the memory foam in the embodiment 3 in that the raw materials do not contain latex-like polyether.
Comparative example 2: a water-washable antibacterial mildewproof memory foam is different from the memory foam in example 3 in that the raw materials do not contain the hydrophobic polyol polyether.
Comparative example 3: a water-washable antibacterial mildewproof memory foam is different from the memory foam in example 3 in that the raw materials do not contain modified polymer polyol.
Comparative example 4: a water-washable antibacterial mildewproof memory foam, which is different from the memory foam in the embodiment 3 in that the raw materials do not contain temperature-sensitive polyether.
Comparative example 5: a washable antibacterial mildewproof memory foam is different from the embodiment 3 in that the catalyst is triethylene diamine alone.
Comparative example 6: a water-washable antibacterial and mildewproof memory foam is different from the memory foam in example 3 in that the catalyst is dibutyltin dilaurate alone.
Comparative example 7: a water-washable antibacterial mildewproof memory foam is different from the memory foam in example 3 in that the hydroxyl value of the slow rebound polyether polyol is 280mgKOH/g, and the acid value is 0.01 mgKOH/g.
Comparative example 8: a water-washable antibacterial mildewproof memory foam is different from the memory foam in example 3 in that the hydroxyl value of the slow rebound polyether polyol is 330mgKOH/g, and the acid value is 0.15 mgKOH/g.
Comparative example 9: a water-washable antibacterial and mildewproof memory foam is different from the memory foam in example 3 in that the hydroxyl value of the hydrophobic polyether polyol is 50 mgKOH/g.
Comparative example 10: a water-washable antibacterial and mildewproof memory foam is different from the memory foam in example 3 in that the hydroxyl value of the hydrophobic polyether polyol is 65 mgKOH/g.
Product performance detection
Washing resistance: the memory foam samples of 15cm × 15cm in size obtained in examples 1 to 6 and comparative examples 1 to 10 were subjected to a water washing resistance test by the following specific test method: after washing with water in a drum washing machine under the same conditions for 50 times, the appearance deformation of the sample was observed.
Quick-drying performance: the memory foam samples of 15cm × 15cm in size obtained in examples 1 to 6 and comparative examples 1 to 10 were subjected to a water washing resistance test by the following specific test method: and (3) immersing each sample in 25 ℃ water with the same volume for 30min, taking out the sample, placing the sample in a constant temperature and constant humidity test room, and respectively recording the time of each sample until the weight is constant.
Slow rebound recovery time: the slow rebound recovery time test is carried out on the memory foam samples with the size of 15cm multiplied by 15cm of examples 1-6 and comparative examples 1-10, and the specific method refers to the national standard GB/T26392-.
Antibacterial and mildewproof properties: the memory foam samples with the size of 15cm multiplied by 15cm in examples 1-6 and comparative examples 1-10 are tested for antibacterial and mildewproof performance, and the specific method refers to GB/T24253-20098 evaluation on the anti-mite performance of textiles and GB/T24346-2009 evaluation on the mildewproof performance of textiles.
The results are shown in Table 1.
TABLE 1 results of Performance test of samples of examples 1-6 and comparative examples 1-10
As can be seen from Table 1, the water resistance tests of 50 times of the examples 1-6 have no deformation, the shape of the sample is kept intact, and the comparative examples 2 and 3 have slight deformation, which shows that the hydrophobic polyol polyether added in the formulation of the application has a reinforcing effect on the water repellency of the polyurethane memory foam, so that the water resistance of the product is improved, and the samples of the comparative examples 7-10 also have slight deformation after 50 times of water washing, so that the slow rebound polyether polyol selected by the application has better water resistance of the polymer product.
As can be seen from Table 1, the quick-drying performance of examples 1-6 is better than that of each comparative example, and the quick-drying performance of comparative examples 2 and 3 is the worst, which shows that the hydrophobic polyol polyether and the modified polymer polyol added in the formula enable the retention time of moisture in the polyurethane material to be shorter, and the quick-drying performance of the product is improved.
As can be seen from Table 1, the slow rebound recovery time of the samples 1 to 6 in the application is kept within 5 to 6 seconds and is higher than that of the comparative example, so that the slow rebound effect of the sample prepared in the application is better, the slow rebound recovery time of the comparative example 1 is obviously shortened, the slow rebound effect of the latex-like polyether added in the formula in the application is obviously improved, and the slow rebound effect of the product in the application is better.
It can be seen from table 1 that the mold and mite inhibition rates of examples 1 to 6 of the present application and comparative examples 1 to 10 all reach a level of 98% or more, which indicates that the zinc pyrithione antibacterial and antifungal agent in the formulation of the present application has an obvious promotion and promotion effect on the antibacterial and antifungal effects of polyurethane memory foam.
The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The washable antibacterial mildew-proof memory foam is characterized by being prepared from the following raw materials in parts by weight: 60-85 parts of common polyether polyol, 10-35 parts of slow rebound polyether polyol, 10-20 parts of latex-like polyether, 10-20 parts of hydrophobic polyether polyol, 5-10 parts of modified polymer polyol, 0.5-1.2 parts of chain extender, 0.3-1 part of chain extending cross-linking agent, 0.8-1.5 parts of catalyst, 1.5-3 parts of foaming agent, 0.5-1 part of foam stabilizer, 0.8-1.6 parts of silicone oil, 40-65 parts of isocyanate and 0.3-1.2 parts of antibacterial mildew inhibitor.
2. The water-washable antibacterial mildewproof memory foam according to claim 1, wherein the water-washable antibacterial mildewproof memory foam comprises the following components in percentage by weight: the weight portion of the slow rebound polyether polyol is preferably 15-30 parts, and the weight portion of the latex-like polyether is preferably 12-18 parts.
3. The water-washable antibacterial mildewproof memory foam according to claim 1, wherein the water-washable antibacterial mildewproof memory foam comprises the following components in percentage by weight: the common polyether polyol comprises two mixtures of polyether polyol A with a hydroxyl value of 54-58mgKOH/g and polyether polyol B with a hydroxyl value of 33-37mgKOH/g, and the acid value of the polyether polyol A, B mixture is 0.05-0.08 mgKOH/g.
4. The water-washable antibacterial mildewproof memory foam according to claim 1, wherein the water-washable antibacterial mildewproof memory foam comprises the following components in percentage by weight: the hydroxyl value of the slow rebound polyether polyol is 298-318mgKOH/g, and the acid value of the slow rebound polyether polyol is 0.05-0.10 mgKOH/g.
5. The water-washable antibacterial mildewproof memory foam according to claim 1, wherein the water-washable antibacterial mildewproof memory foam comprises the following components in percentage by weight: the hydrophobic polyether polyol has a hydroxyl value of 55-57mgKOH/g, a molecular weight of 2000 and a functionality of 2.
6. The water-washable antibacterial mildewproof memory foam according to claim 1, wherein the water-washable antibacterial mildewproof memory foam comprises the following components in percentage by weight: the modified polymer polyol is a silane modified polymer polyol.
7. The water-washable antibacterial mildewproof memory foam according to claim 1, wherein the water-washable antibacterial mildewproof memory foam comprises the following components in percentage by weight: the amine catalyst is triethylene diamine, the organic tin catalyst is dibutyltin dilaurate, and the mass ratio of the triethylene diamine to the dibutyltin dilaurate is 1: (0.5-1).
8. The water-washable antibacterial mildewproof memory foam according to claim 1, wherein the water-washable antibacterial mildewproof memory foam comprises the following components in percentage by weight: the antibacterial mildew preventive is zinc pyrithione antibacterial mildew preventive.
9. The water-washable antibacterial and mildewproof memory foam according to any one of claims 1 to 8, wherein the water-washable antibacterial and mildewproof memory foam comprises: the raw materials of the product also comprise 8-12 parts of temperature-sensitive polyether.
10. The water-washable antibacterial mildewproof memory foam according to claim 9, wherein the water-washable antibacterial mildewproof memory foam comprises the following components in percentage by weight: the washable antibacterial mildew-proof memory foam can be applied to the preparation of pillow interiors, mattresses, cushions and back cushions.
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| CN116478369A (en) * | 2023-05-15 | 2023-07-25 | 佛山市惠安家居用品有限公司 | Antibacterial, anti-mite and mildew-proof elastic sponge and preparation method thereof |
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