CN115710368B - Surface spraying GPU protective layer, light wear-resisting foaming sole - Google Patents
Surface spraying GPU protective layer, light wear-resisting foaming sole Download PDFInfo
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Abstract
A surface-sprayed GPU protective layer, a light wear-resistant foaming sole comprises a midsole body, a paint coating and a GPU coating which are sequentially sprayed on the surface of the midsole body, wherein the thickness of the GPU protective layer is 0.3-2.5mm; the paint consists of the following raw materials: polyurethane paint, a curing agent, hydroxyethyl acrylate and a diluent; the GPU liquid is formed by mixing a material A and a material B according to the volume ratio of 100:60-90, wherein the material A comprises the following raw materials: the invention relates to a preparation method of a foaming sole, which comprises the steps of firstly spraying paint on the surface of the foaming sole to form patterns with different colors; and then, continuously spraying a layer of GPU coating on the surface of the paint coating, so that the prepared foamed sole can be light and weight by more than 30 percent compared with a common rubber sole, and meanwhile, the sprayed GPU coating fully wraps the bottom and/or the side surface of the midsole body to form a protective layer of the foamed sole, so that stress can be dispersed, the balance of the sole is realized, and the walking safety of a wearer is ensured.
Description
Technical Field
The invention belongs to the field of foam sole preparation, and particularly relates to a light wear-resistant foam sole with a surface sprayed with a GPU.
Background
At present, lightweight materials such as pebax, aliphatic TPU and the like are widely used for soles with high performance and lightweight, but the soles are poor in tearing performance and easy to crack, even the soles are broken, so that wearing is affected; if wear-resistant sheets are compounded at the bottom of the sole, the wear-resistant sheets are required to be molded first and then compounded with the sole through glue, so that the production efficiency is low, the wear-resistant sheets are easy to fall off, the normal use of the sole is affected, and the improvement is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a light wear-resistant foaming sole with a GPU (graphics processing unit) sprayed on the surface.
The invention adopts the following technical scheme:
the surface of the sole is sprayed with a GPU protective layer, the light wear-resistant foaming sole comprises a midsole body, and a paint coating and a GPU coating which are sequentially sprayed on the surface of the midsole body, wherein the thickness of the GPU protective layer is 0.3-2.5mm;
the preparation method comprises the following steps:
spraying the prepared paint on the bottom surface and/or the side surface of the midsole body, and then drying at 50-70 ℃ for 8-15min to form paint coatings with different color patterns on the surface of the midsole body;
preparing GPU liquid, uniformly spraying the GPU liquid on the surface of a paint coating, and drying the paint coating at the temperature of 70-105 ℃ for 100-500 seconds to obtain the foaming sole;
the paint comprises the following raw materials in parts by weight: 20-35 parts of polyurethane paint, 10-20 parts of curing agent, 8-12 parts of hydroxyethyl acrylate and 40 parts of diluent;
the GPU liquid is formed by mixing a material A and a material B according to the volume ratio of 100:60-90, wherein the material A comprises the following raw materials in parts by weight: 100 parts of polyol prepolymer, 7-13 parts of chain extender, 0.5-2.3 parts of white carbon black, 0.1-0.2 part of catalyst, 0.3-1 part of hydroxyethyl acrylate and 0.005-0.01 part of photoinitiator.
Further, the viscosity of the polyol prepolymer is 400-1000cp, the hydroxyl value is 45-68mKOH/g, the acid value is less than 0.5mgKOH/g, and the water content is less than 1000 ppm.
Further, the polyol prepolymer at least comprises one of polyester polyol and polyether polyol.
Further, the polyester polyol is one or more of polybutylene adipate polyol, polyethylene glycol monopropylene glycol adipate, polyethylene glycol monopoly-adipate, polycaprolactone polyol and polycarbonate diol.
Further, the polyether polyol is one or more of polypropylene glycol, polytetrahydrofuran glycol and tetrahydrofuran-propylene oxide copolymer glycol.
Further, the material B is isocyanate prepolymer, and the isocyanate content is 14-35%; the isocyanate prepolymer comprises at least one of a diisocyanate modified polyester polyol prepolymer and a diisocyanate modified polyether polyol prepolymer.
Further, the isocyanate prepolymer is a diphenylmethane diisocyanate (MDI) modified polyester polyol prepolymer.
Further, the diluent is cyclohexanone, butyl acetate or acetone.
Further, the curing agent is ethyl acetate solution of isocyanate, and the solid content is 34-50%.
Further, the middle substrate body is composed of one or more of ethylene-vinyl acetate copolymer EVA, polyurethane, block polyether amide Pebax and thermoplastic polyester elastomer TPEE.
Further, the polyurethane comprises one or more of polyurethane casting foaming, thermoplastic polyurethane foam particles and thermoplastic polyurethane foaming.
Further, the polyurethane comprises one or more of polyester polyurethane, polyether polyurethane and aliphatic polyurethane.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects: the invention firstly sprays paint on the surface of the foaming sole to form patterns with different colors by limiting the preparation method of the foaming sole; then, continuously spraying a layer of GPU coating on the surface of the paint coating, so that the manufactured foam sole can realize light weight by more than 30 percent compared with the common rubber sole, and meanwhile, the sprayed GPU coating fully wraps the bottom and/or the side surface of the midsole body to form a protective layer of the foam sole, so that stress can be dispersed, the situation that the foam sole is cracked due to large local stress is avoided, the balance of the sole is realized, the walking safety of a wearer is ensured, the problem of poor wear resistance and skid resistance of the foam sole is solved, and the lightweight foam sole has high performance and expanded application range; in addition, the exposed surface of the GPU coating has granular feel, a certain pattern can be formed, the bottom achieves the wear-resistant and anti-skid effects, and the side surface can be attractive; compared with the traditional mode of firstly forming the bottom plate and then attaching by using glue, the method has the advantages that the production efficiency is improved by more than 40%, the problem of fracture of the high-performance soles such as pebax, aliphatic TPU and the like in the prior art is effectively solved, and the high-performance materials can be better and more applied to the soles;
specifically limiting the raw material composition of the GPU coating, specifically limiting the formula and parameters of the solution A, and strictly controlling the reaction rate by matching with a special isocyanate prepolymer so as to ensure that the GPU coating is formed quickly, thereby greatly improving the production efficiency; the composition of the paint is further limited, and the hydroxyethyl acrylate is added, so that ultraviolet curing reaction can be carried out with the GPU liquid, and the adhesive force of the polyurethane liquid is further enhanced.
Detailed Description
The invention is further described below by means of specific embodiments.
A surface-sprayed GPU protective layer, a light wear-resistant foaming sole comprises a midsole body, a paint coating and a GPU coating which are sequentially sprayed on the surface of the midsole body, wherein the thickness of the GPU protective layer is 0.3-2.5mm; specifically, the middle sole body consists of one or more of ethylene-vinyl acetate copolymer EVA, polyurethane, block polyether amide Pebax and thermoplastic polyester elastomer TPEE; further, the polyurethane comprises one or more of polyurethane casting foaming, thermoplastic polyurethane foam particles and thermoplastic polyurethane foaming; or one or more of polyester polyurethane, polyether polyurethane and aliphatic polyurethane.
The paint comprises the following raw materials in parts by weight: 20-35 parts of polyurethane paint, 10-20 parts of curing agent, 8-12 parts of hydroxyethyl acrylate and 40 parts of diluent; specifically, the solid content of the polyurethane paint is 30-50%; the diluent is cyclohexanone, butyl acetate or acetone; the curing agent is ethyl acetate solution of isocyanate, and the solid content is 34-50%.
The GPU liquid is formed by mixing a material A and a material B according to the volume ratio of 100:60-90, wherein the material A comprises the following raw materials in parts by weight: 100 parts of polyol prepolymer, 7-13 parts of chain extender, 0.5-2.3 parts of white carbon black, 0.1-0.2 part of catalyst, 0.3-1 part of hydroxyethyl acrylate and 0.005-0.01 part of photoinitiator.
The viscosity of the polyol prepolymer is 400-1000cp, the hydroxyl value is 45-68mKOH/g, the acid value is less than 0.5mgKOH/g, and the water content is less than 1000 ppm; specifically, the polyol prepolymer at least comprises one of polyester polyol and polyether polyol; further, the polyester polyol is one or more of polybutylene adipate polyol, polyethylene glycol monopropylene glycol adipate, polyethylene glycol monopoly-adipate, polycaprolactone polyol and polycarbonate diol; the polyether polyol is one or more of polypropylene glycol, polytetrahydrofuran glycol and tetrahydrofuran-propylene oxide copolymer glycol.
The material B is isocyanate prepolymer, and the isocyanate content is 14-35%; the isocyanate prepolymer comprises at least one of a diisocyanate modified polyester polyol prepolymer and a diisocyanate modified polyether polyol prepolymer; specifically, the isocyanate prepolymer is a diphenylmethane diisocyanate (MDI) modified polyester polyol prepolymer.
The preparation method comprises the following steps:
spraying the prepared paint on the bottom surface and/or the side surface of the midsole body, and then drying at 50-70 ℃ for 8-15min to form paint coatings with different color patterns on the surface of the midsole body;
preparing GPU liquid, uniformly spraying the GPU liquid on the surface of the paint coating, and drying the paint coating at the temperature of 70-105 ℃ for 100-500 seconds to obtain the foaming sole.
Example 1
A GPU protective layer and a light wear-resistant foaming sole are sprayed on the surface of the foaming sole, the foaming sole comprises a midsole body, and a paint coating and a GPU coating which are sequentially sprayed on the surface of the midsole body, and specifically, the thickness of the GPU protective layer is 0.3mm.
The paint comprises the following raw materials in parts by weight: 20 parts of polyurethane paint, 20 parts of curing agent, 8 parts of hydroxyethyl acrylate and 40 parts of diluent; specifically, the solid content of the polyurethane paint is 30%; the diluent is cyclohexanone; the curing agent is ethyl acetate solution of isocyanate, and the solid content is 50%.
The GPU liquid is formed by mixing a material A and a material B according to the volume ratio of 100:60, wherein the material A comprises the following raw materials in parts by weight: 100 parts of polyol prepolymer, 7 parts of chain extender, 0.5 part of white carbon black, 0.1 part of catalyst, 1 part of hydroxyethyl acrylate and 0.005 part of photoinitiator.
The viscosity of the polyol prepolymer was 400cp; specifically, the polyol prepolymer is a polybutylene adipate polyol species.
The material B is isocyanate prepolymer, and the isocyanate content is 35%; specifically, the isocyanate prepolymer is a diphenylmethane diisocyanate (MDI) modified polyester polyol prepolymer.
The preparation method comprises the following steps:
spraying the prepared paint on the bottom surface and/or the side surface of a midsole body prepared by molding thermoplastic polyurethane foam particles, and then drying at 50 ℃ for 15min to enable the surface of the midsole body to be coated with paint with different color patterns;
preparing GPU liquid, uniformly spraying the GPU liquid on the surface of the paint coating, and drying the paint coating at the temperature of 70 ℃ for 500 seconds to obtain the foaming sole.
Example 2
A GPU protective layer and a light wear-resistant foaming sole are sprayed on the surface of the foaming sole, the foaming sole comprises a midsole body, and a paint coating and a GPU coating which are sequentially sprayed on the surface of the midsole body, and specifically, the thickness of the GPU protective layer is 2.5mm.
The paint comprises the following raw materials in parts by weight: 35 parts of polyurethane paint, 10 parts of curing agent, 12 parts of hydroxyethyl acrylate and 40 parts of diluent; specifically, the solid content of the polyurethane paint is 50%; the diluent is butyl acetate; the curing agent is ethyl acetate solution of isocyanate, and the solid content is 34%.
The GPU liquid is formed by mixing a material A and a material B according to the volume ratio of 100:90, wherein the material A comprises the following raw materials in parts by weight: 100 parts of polyol prepolymer, 13 parts of chain extender, 2.3 parts of white carbon black, 0.2 part of catalyst, 0.3 part of hydroxyethyl acrylate and 0.01 part of photoinitiator.
The viscosity of the polyol prepolymer is 1000cp; specifically, the polyol prepolymer is polytetrahydrofuran diol.
The material B is isocyanate prepolymer, and the isocyanate content is 14%; specifically, the isocyanate prepolymer is a diphenylmethane diisocyanate (MDI) modified polyester polyol prepolymer.
The preparation method comprises the following steps:
spraying the prepared paint on the bottom surface and/or the side surface of a foaming midsole body prepared by foaming block polyether amide Pebax beads, and then drying at 70 ℃ for 8min to enable paint coatings with different color patterns to be formed on the surface of the midsole body;
preparing GPU liquid, uniformly spraying the GPU liquid on the surface of a paint coating, and drying the paint coating for 100 seconds at the temperature of 105 ℃ to obtain the foaming sole.
Example 3
A GPU protective layer and a light wear-resistant foaming sole are sprayed on the surface of the foaming sole, the foaming sole comprises a midsole body, and a paint coating and a GPU coating which are sequentially sprayed on the surface of the midsole body, and specifically, the thickness of the GPU protective layer is 1.6mm.
The paint comprises the following raw materials in parts by weight: 28 parts of polyurethane paint, 15 parts of curing agent, 10 parts of hydroxyethyl acrylate and 40 parts of diluent; specifically, the solid content of the polyurethane paint is 40%; the diluent is acetone; the curing agent is ethyl acetate solution of isocyanate, and the solid content is 42%.
The GPU liquid is formed by mixing materials A and B according to the volume ratio of 100:75, wherein the materials A comprise the following raw materials in parts by weight: 100 parts of polyol prepolymer, 10 parts of chain extender, 1.7 parts of white carbon black, 0.15 part of catalyst, 0.6 part of hydroxyethyl acrylate and 0.008 part of photoinitiator.
The viscosity of the polyol prepolymer was 700cp; specifically, the polyol prepolymer polyethylene glycol adipate polyol and polypropylene glycol are formed according to the mass ratio of 1:1.
The material B is isocyanate prepolymer, and the isocyanate content is 20%; specifically, the isocyanate prepolymer is a diphenylmethane diisocyanate (MDI) modified polyester polyol prepolymer.
The preparation method comprises the following steps:
spraying the prepared paint on the bottom surface and/or the side surface of a foaming midsole body prepared from a thermoplastic polyester elastomer TPEE, and then drying at 60 ℃ for 12min to enable the surface of the midsole body to be coated with paint with different color patterns;
preparing GPU liquid, uniformly spraying the GPU liquid on the surface of the paint coating, and drying the paint coating at the temperature of 90 ℃ for 300 seconds to obtain the foaming sole.
The invention firstly sprays paint on the surface of the foaming sole to form patterns with different colors by limiting the preparation method of the foaming sole; then, continuously spraying a layer of GPU coating on the surface of the paint coating, so that the manufactured foam sole can realize light weight by more than 30 percent compared with the common rubber sole, and meanwhile, the sprayed GPU coating fully wraps the bottom and/or the side surface of the midsole body to form a protective layer of the foam sole, so that stress can be dispersed, the situation that the foam sole is cracked due to large local stress is avoided, the balance of the sole is realized, the walking safety of a wearer is ensured, the problem of poor wear resistance and skid resistance of the foam sole is solved, and the lightweight foam sole has high performance and expanded application range; in addition, the thickness of the GPU coating can be controlled, so that the exposed surface of the GPU coating has granular feel, a certain pattern can be formed, the bottom achieves the wear-resistant and anti-skid effects, and the side surface can be attractive; and the molding speed is high, compared with the traditional mode of firstly molding the bottom plate and then attaching by using glue, the production efficiency is improved by more than 40%, the problem of fracture of the high-performance soles such as pebax, aliphatic TPU and the like in the prior art is effectively solved, and the high-performance materials can be better and more applied to the soles.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, i.e., the invention is not to be limited to the details of the claims and the description, but rather is to cover all modifications which are within the scope of the invention.
Claims (10)
1. The utility model provides a surface spraying GPU protective layer, light wear-resisting foaming sole which characterized in that: the novel multifunctional middle sole comprises a middle sole body, and a paint coating and a GPU coating which are sequentially sprayed on the surface of the middle sole body, wherein the thickness of a GPU protective layer is 0.3-2.5mm;
the preparation method comprises the following steps:
spraying the prepared paint on the bottom surface and/or the side surface of the midsole body, and then drying at 50-70 ℃ for 8-15min to form paint coatings with different color patterns on the surface of the midsole body;
preparing GPU liquid, uniformly spraying the GPU liquid on the surface of a paint coating, and drying the paint coating at the temperature of 70-105 ℃ for 100-500 seconds to obtain the foaming sole;
the paint comprises the following raw materials in parts by weight: 20-35 parts of polyurethane paint, 10-20 parts of curing agent, 8-12 parts of hydroxyethyl acrylate and 40 parts of diluent;
the GPU liquid is formed by mixing a material A and a material B according to the volume ratio of 100:60-90, wherein the material A comprises the following raw materials in parts by weight: 100 parts of polyol prepolymer, 7-13 parts of chain extender, 0.5-2.3 parts of white carbon black, 0.1-0.2 part of catalyst, 0.3-1 part of hydroxyethyl acrylate and 0.005-0.01 part of photoinitiator.
2. The method for preparing the light wear-resistant foamed sole with the GPU protective layer sprayed on the surface, which is disclosed in claim 1, is characterized in that: the viscosity of the polyol prepolymer is 400-1000cp, the hydroxyl value is 45-68mKOH/g, the acid value is less than 0.5mgKOH/g, and the water content is within 1000 ppm.
3. The method for preparing the light wear-resistant foamed sole with the surface sprayed with the GPU protective layer, which is disclosed in claim 2, is characterized in that: the polyol prepolymer at least comprises one of polyester polyol and polyether polyol.
4. The method for preparing the light wear-resistant foamed sole with the GPU protective layer sprayed on the surface, according to claim 3, is characterized in that: the polyester polyol is one or more of polybutylene adipate polyol, polyethylene glycol monopropylene glycol adipate, polyethylene glycol monopolyadipate, polycaprolactone polyol and polycarbonate diol.
5. The method for preparing the light wear-resistant foamed sole with the GPU protective layer sprayed on the surface, according to claim 3, is characterized in that: the polyether polyol is one or more of polypropylene glycol, polytetrahydrofuran glycol and tetrahydrofuran-propylene oxide copolymer glycol.
6. The method for preparing the light wear-resistant foamed sole with the GPU protective layer sprayed on the surface, which is disclosed in claim 1, is characterized in that: the material B is isocyanate prepolymer, and the isocyanate content is 14-35%; the isocyanate prepolymer comprises at least one of a diisocyanate modified polyester polyol prepolymer and a diisocyanate modified polyether polyol prepolymer.
7. The method for preparing the light wear-resistant foamed sole with the GPU protective layer sprayed on the surface, which is disclosed in claim 6, is characterized in that: the isocyanate prepolymer is a diphenylmethane diisocyanate (MDI) modified polyester polyol prepolymer.
8. The method for preparing the light wear-resistant foamed sole with the GPU protective layer sprayed on the surface, which is disclosed in claim 1, is characterized in that: the diluent is cyclohexanone, butyl acetate or acetone.
9. The method for preparing the light wear-resistant foamed sole with the GPU protective layer sprayed on the surface, which is disclosed in claim 1, is characterized in that: the curing agent is ethyl acetate solution of isocyanate, and the solid content is 34-50%.
10. The method for preparing the light wear-resistant foamed sole with the GPU protective layer sprayed on the surface, which is disclosed in claim 1, is characterized in that: the middle sole body consists of one or more of ethylene-vinyl acetate copolymer EVA, polyurethane, block polyether amide Pebax and thermoplastic polyester elastomer TPEE.
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Address after: No. 588, Jinxin Middle Road, Jiangtou village, Chendai Town, Jinjiang City, Quanzhou City, Fujian Province, 362000 Applicant after: Maotai (Fujian) New Material Technology Co.,Ltd. Applicant after: Shengtai (Fujian) shoe material Co.,Ltd. Address before: No. 588, Jinxin Middle Road, Jiangtou village, Chendai Town, Jinjiang City, Quanzhou City, Fujian Province, 362000 Applicant before: Maotai(Fujian) Soles Co.,Ltd. Applicant before: Shengtai (Fujian) shoe material Co.,Ltd. |
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