CN115637007A - Investable packaging material for ethylene propylene diene monomer and preparation method thereof - Google Patents
Investable packaging material for ethylene propylene diene monomer and preparation method thereof Download PDFInfo
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- CN115637007A CN115637007A CN202211356815.4A CN202211356815A CN115637007A CN 115637007 A CN115637007 A CN 115637007A CN 202211356815 A CN202211356815 A CN 202211356815A CN 115637007 A CN115637007 A CN 115637007A
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Abstract
The invention discloses a drop-in packaging material for ethylene propylene diene monomer and a preparation method thereof, wherein the melting point range is 55-90 ℃, the drop-in packaging material can be directly added into an open mill and an internal mixer together with raw materials, manual bag opening is not needed for feeding during use, independent destruction treatment is not needed for material bags, dust flying is not caused, the product quality is stable, the physical and chemical properties of final products are not affected, and the production efficiency of an ethylene propylene diene monomer heat-insulating material is improved. The ethylene propylene diene monomer packing material comprises a component A and a compound containing an acid anhydride group; the component A is one or two of ethylene-vinyl acetate copolymer and ethylene and alpha-olefin copolymer; the content of vinyl acetate in the ethylene-vinyl acetate copolymer material is 5 to 10 percent; the alpha-olefin in the copolymer of ethylene and alpha-olefin is butene or octene.
Description
Technical Field
The invention relates to the technical field of protective materials, in particular to an investable packaging material for ethylene propylene diene monomer and a preparation method thereof.
Background
The materials of the material bag adopted in the existing thermal insulation material production process when powdery or granular raw materials are weighed are usually polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE) and the like, the melting point range is 90-210 ℃, the materials can not be melted in the mixing processing process of the thermal insulation material, the bag opening and the feeding are required to be carried out manually in the feeding link, and the materials can not be fed directly. The manual bag opening and feeding cause dust flying, which causes the pollution of the working environment in the workshop and the harm to the human health. The manual bag removal and feeding can also cause the loss of powdery or granular raw materials and cause the instability of product quality, and the removed material bag needs to be destroyed independently, thus being not environment-friendly.
Disclosure of Invention
The invention provides a disposable packaging material for ethylene propylene diene monomer, which has a melting point range of 55-90 ℃, can be directly added into an open mill and an internal mixer together with raw materials, does not need manual bag opening for feeding when in use, does not need independent material bag destroying treatment, does not cause dust flying, has stable product quality, does not influence the physical and chemical properties of final products, and improves the production efficiency of ethylene propylene diene monomer heat-insulating materials.
The invention provides a disposable packaging material for ethylene propylene diene monomer, which has the following specific technical scheme:
comprising component A and a compound containing anhydride groups;
the component A is one or two of ethylene-vinyl acetate copolymer (EVA) and ethylene and alpha-olefin copolymer (POE);
the vinyl acetate content in the ethylene-vinyl acetate copolymer material is 5-10 percent;
the alpha-olefin in the copolymer of ethylene and alpha-olefin is butene or octene.
Preferably, the compound containing acid anhydride groups is maleic anhydride, and the mass ratio of the component A to the maleic anhydride is 100.
Preferably, the melting point range of the component A is 55-90 ℃, and the component A can be blended and compatible with the ethylene propylene diene monomer thermal insulation material.
Preferably, the component A is an ethylene-vinyl acetate copolymer and an ethylene and alpha-olefin copolymer, and the mass ratio of the ethylene-vinyl acetate copolymer to the ethylene and alpha-olefin copolymer is 1.
Preferably, when the alpha-olefin in the copolymer of ethylene and alpha-olefin is butene, the mass ratio of the butene in the copolymer of ethylene and butene is 15 to 25%.
Preferably, when the α -olefin in the copolymer of ethylene and α -olefin is octene, the ratio of octene in the copolymer of ethylene and octene is 15% to 25% by mass.
The invention also aims to provide a preparation method of the investable packaging material for ethylene propylene diene monomer.
The preparation method comprises the following steps:
s1: weighing a component A: one or two of ethylene-vinyl acetate copolymer and ethylene and alpha-olefin copolymer;
the content of vinyl acetate in the ethylene-vinyl acetate copolymer material is 5 to 10 percent;
the alpha-olefin in the copolymer of ethylene and alpha-olefin is butene or octene;
s2: carrying out surface treatment on the component A;
s3: modifying the component A after surface treatment by using a compound containing an acid anhydride group;
s4: and (3) carrying out molding treatment on the modified component A.
Preferably, the surface treatment of the component A comprises the following steps:
putting the component A into a container containing a solvent, and soaking for 2-4 h; taking the component A out of the container after soaking, then repeatedly cleaning the component A with clear water, and then spreading the component A into an electric heating air blast drying box for drying to obtain the component A after surface treatment; the solvent is ethyl acetate solution with the purity of more than or equal to 90 percent.
Preferably, the modification of the surface-treated component a with the compound containing an anhydride group comprises:
weighing the component A after surface treatment, maleic anhydride and dicumyl peroxide according to a mass ratio of 100.
Preferably, the modified component A is subjected to molding treatment, and the molding treatment comprises the following steps:
and melting, cooling, granulating, drying, extruding, blowing and cutting the modified component A to obtain the Ethylene Propylene Diene Monomer (EPDM) which can be used as a packaging material.
The invention has the following beneficial effects:
the ethylene propylene diene monomer casting packaging material provided by the invention has a low melting point, can be directly cast along with raw materials, does not need to disassemble material bags, overcomes the problems of dust flying and independent treatment of the material bags when the material bags are manually disassembled and cast, achieves the purposes of clean production and environmental protection, and has no raw material loss and ensures the accuracy of the weight of ingredients because the material bags are not disassembled; the invention can be well blended and compatible with the rubber base material and the raw materials of the heat-insulating material, the blending system can reach the uniform mixing degree on the level of a molecular chain segment to form a complete compatible system, has good compatibility with the ethylene propylene diene monomer, does not react with other raw materials in the heat-insulating material, does not participate in the vulcanization crosslinking process of the ethylene propylene diene monomer heat-insulating material, has no influence on the subsequent vulcanization production link of the ethylene propylene diene monomer, has stable physical and chemical properties of the produced ethylene propylene diene monomer, and has no influence on the appearance and the body performance of the ethylene propylene diene monomer heat-insulating material; the rubber compound production equipment is suitable for rubber compound production equipment with various specifications, raw materials can be normally weighed, the weighed packaging materials cannot be damaged in the normal carrying process, the production amount of the heat-insulating materials is small, manual feeding can be achieved, an automatic feeding system can be adopted when the production amount is large, and the production efficiency is improved.
Detailed Description
The embodiments of the present invention will be described in further detail below, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The materials described in the examples are all products normally sold on the market. In the examples, the amounts not specifically described are in parts by mass.
Examples
The preparation method of the ethylene propylene diene monomer capable of being put into a packaging material comprises the following steps: one or two of ethylene-vinyl acetate copolymer and ethylene and alpha-olefin copolymer; the content of vinyl acetate in the ethylene-vinyl acetate copolymer (EVA) material is 5 to 10 percent; in the ethylene and alpha-olefin copolymer (POE), alpha-olefin is butylene or octene; carrying out surface treatment on the component A; modifying the component A after surface treatment; and (3) carrying out molding treatment on the modified component A.
The surface treatment of the component A comprises the following steps: putting the component A into a stainless steel container containing a solvent, stirring the component A by a stirring rod clockwise and anticlockwise for 3min respectively, then covering a stainless steel barrel cover, and soaking for 2-4 h; removing the surface oil agent of the component A after soaking, taking the component A out of a stainless steel barrel, repeatedly cleaning the component A with clear water, spreading the component A in an electric heating forced air drying oven (45 ℃, 2-4 h), cooling to room temperature, taking the component A out of the drying oven, putting the component A into a clean black plastic bag to obtain the surface-treated component A, and sealing and storing in a dark place for later use; the solvent is ethyl acetate solution with the purity of more than or equal to 90 percent.
Modifying the component A after surface treatment, comprising the following steps: weighing the component A after surface treatment, an anhydride group-containing compound and a peroxide according to a mass ratio of 100; firstly, putting maleic anhydride and dicumyl peroxide into acetone, stirring and melting, then adding the surface-treated component A, uniformly stirring to ensure that the maleic anhydride and the dicumyl peroxide are uniformly attached to the surface-treated component A, taking out the surface-treated component A, then placing the surface-treated component A into an electrothermal blowing drying oven, drying for 0.5h at 50 ℃, and volatilizing the acetone to obtain the modified component A.
And (3) carrying out molding treatment on the modified component A, wherein the molding treatment comprises the following steps of melting, cooling, granulating, drying, extruding, blowing and cutting the modified component A to obtain the Ethylene Propylene Diene Monomer (EPDM) which can be used as a packaging material.
The method can obtain the disposable packaging material for the disposable ethylene propylene diene provided by the invention, the melting point range of the packaging material provided by the invention is between 55 and 90 ℃, and because the component A contains a small amount of oil on the surface during production, the component A needs to be subjected to surface treatment by using a solvent and functional modification by using a compatilizer before use, and the disposable packaging material for the disposable ethylene propylene diene is prepared after surface treatment and modification. The ethylene propylene diene monomer can be directly added into an open mill and an internal mixer together with raw materials in the mixing and feeding process without manual bag removal for feeding, the melting point of the input packaging material for ethylene propylene diene monomer can be lower than the temperature of the existing rubber compound production process, the ethylene propylene diene monomer can be melted in the mixing and vulcanizing process through surface treatment and modification, the melted ethylene propylene diene monomer can be blended and compatible with the ethylene propylene diene monomer heat-insulating material, and the appearance and the physical and chemical properties of the produced mixing rubber and vulcanized rubber are not influenced within a certain use range. Compared with the traditional packaging material, the input packaging material for ethylene propylene diene provided by the invention can be directly fed for production without manual bag opening and material feeding, and eliminates material flying of a heat insulating material in the mixing and material feeding process, so that the production workshop environment is improved, garbage treatment on a material bag is not required subsequently, the pollution of the material and the packaging material to the environment is reduced, the material loss is reduced, the possibility of formula unbalance is reduced, and the product quality is improved.
The invention provides various groups of application effects of the investable packaging material for ethylene propylene diene monomer, which are as follows:
examples 1 to 4: the rubber material comprises ethylene propylene diene monomer rubber, powder reinforcing filler, flame-retardant fiber, flame-retardant filler, resin, vulcanizing agent and an ethylene propylene diene monomer which can be put into a packaging material: the ethylene propylene diene monomer is calculated by taking the weight parts of the ethylene propylene diene monomer as 100 parts, and the weight parts of the components are as follows: 100 parts of ethylene propylene diene monomer, 10-20 parts of powder reinforcing filler, 5-10 parts of flame-retardant fiber, 5-10 parts of flame-retardant filler, 2-100 parts of resin, 1-5 parts of vulcanizing agent and 1-10 parts of ethylene propylene diene monomer applicable packaging material, and the preparation method comprises the following steps: the powder reinforcing filler, the flame-retardant fiber, the flame-retardant filler, the resin and the vulcanizing agent are weighed by using ethylene propylene diene monomer according to the proportion in a table and using a throwable packaging material, the weighed components are directly thrown into an internal mixer according to the rubber mixing process rule along with the raw materials for mixing, the mixture is thinly passed through and taken out of a sheet after mixing, then the sheet is vulcanized and molded under the conditions of (150-160) DEG C multiplied by 5MPa multiplied by 30min, and the performances of the obtained ethylene propylene diene monomer heat-insulating material are shown in table 6.
In examples 1 to 4, EVA as the EVA for the ethylene-propylene-diene monomer input packaging material and POE as the POE for the ethylene-propylene-diene monomer input packaging material were ethylene-alpha-olefin copolymer (POE).
The contents of the respective substances in example 1 are shown in Table 1.
TABLE 1
| Components | Parts by mass |
| Ethylene propylene diene monomer | 100 portions of |
| Powder reinforced filler | 10 portions of |
| Flame-retardant fiber | 5 portions of |
| Flame-retardant filler | 5 portions of |
| Resin composition | 2 portions of |
| Vulcanizing agent | 3 portions of |
| Ethylene Propylene Diene Monomer (EPDM) investable packaging material EVA | 3 portions of |
The ethylene propylene diene monomer heat-insulating material has good processing performance in the mixing process, no dust flies, the appearance inspection of the heat-insulating layer is normal after mixing, the heat-insulating layer can be normally thin and discharged, and the appearance inspection of the heat-insulating material is normal after vulcanization.
Examples 2 to 4 were prepared according to the preparation method of example 1, and only the materials and contents were different.
The contents of the substances in example 2 are shown in Table 2.
TABLE 2
| Components | Parts by mass |
| Ethylene propylene diene monomer | 100 portions of |
| Powder reinforced filler | 10 portions of |
| Flame-retardant fiber | 5 portions of |
| Flame-retardant filler | 5 portions of |
| Resin composition | 2 portions of |
| Vulcanizing agent | 3 portions of |
| POE (polyolefin elastomer) capable of being thrown into packaging material for ethylene propylene diene monomer | 3 portions of |
The ethylene-propylene-diene monomer heat-insulating material has good process performance in the mixing process, no dust flies, the appearance inspection of the heat-insulating layer is normal after mixing, the heat-insulating layer can be normally thin-passed and taken out, and the appearance inspection of the heat-insulating material is normal after vulcanization.
The contents of the substances in example 3 are shown in Table 3.
TABLE 3
| Components | Parts by mass |
| Ethylene propylene diene monomer | 100 portions of |
| Powder reinforced filler | 15 portions of |
| Flame-retardant fiber | 5 portions of |
| Flame-retardant filler | 10 portions of |
| Resin composition | 2 portions of |
| Vulcanizing agent | 3 portions of |
| Ethylene Propylene Diene Monomer (EPDM) investable packaging material EVA | 6 portions of |
The ethylene-propylene-diene monomer heat-insulating material has good process performance in the mixing process, no dust flies, the appearance inspection of the heat-insulating layer is normal after mixing, the heat-insulating layer can be normally thin-passed and taken out, and the appearance inspection of the heat-insulating material is normal after vulcanization.
The contents of the substances in example 4 are shown in Table 4.
TABLE 4
| Components | Parts by mass |
| Ethylene propylene diene monomer | 100 portions of |
| Powder reinforced filler | 20 portions of |
| Flame-retardant fiber | 10 portions of |
| Flame-retardant filler | 10 portions of |
| Resin composition | 2 portions of |
| Vulcanizing agent | 3 portions of |
| Ethylene Propylene Diene Monomer (EPDM) investable packaging material EVA | 10 portions of |
The ethylene-propylene-diene monomer heat-insulating material has good process performance in the mixing process, no dust flies, the appearance inspection of the heat-insulating layer is normal after mixing, the heat-insulating layer can be normally thin-passed and taken out, and the appearance inspection of the heat-insulating material is normal after vulcanization.
The content of each substance in comparative example 1 is shown in table 5, and the group is a control group; comparative example 1 was prepared according to the preparation method of example 1, except that the input packaging material for ethylene propylene diene monomer was not included, and the other materials and contents were the same as those of example 1.
TABLE 5
| Components | Parts by mass |
| Ethylene propylene diene monomer | 100 portions of |
| Powder reinforced filler | 10 portions of |
| Flame-retardant fiber | 5 portions of |
| Flame-retardant filler | 5 portions of |
| Resin composition | 2 portions of |
| Vulcanizing agent | 3 portions of |
In the mixing process of the ethylene-propylene-diene monomer heat-insulating material, the bag needs to be manually removed for pouring and feeding, dust flies in the production process, and the workshop working environment is seriously polluted.
The properties of the epdm thermal insulation materials prepared in examples 1-4 and comparative example 1 are shown in table 6.
TABLE 6
As can be seen from the data in Table 6, the properties of the EPDM thermal insulation material produced by using the investable packaging material for EVA or POE EPDM have no obvious change compared with the properties of the EPDM thermal insulation material which is not used, the positive vulcanization time values are basically consistent under the condition of 160 ℃, and only one glass transition temperature value is provided, which shows that the blending system of the investable packaging material for EPDM and the EPDM thermal insulation material provided by the invention can reach the uniform mixing degree on the level of molecular chain segments to form a complete compatible system, and has no influence on the vulcanization performance and the body performance of the thermal insulation material.
The above are only some embodiments of the present invention, most of the plastic packaging bags sold on the market at present are made of polyethylene, polyolefin, polyvinyl chloride, etc., the melting point range is 90-210 ℃, the mixing temperature of the existing ethylene propylene diene monomer thermal insulation material mixing production process is required to be lower than 90 ℃, the melting point of the packaging bag is higher than the mixing temperature of the thermal insulation layer production, and the packaging bag cannot be melted in the thermal insulation material mixing processing process, so that the bag needs to be manually removed and then the material is put into the bag, the material is exposed in the air and is often filled with powder, which not only harms the health of workers, but also causes great pollution to the working environment in a workshop, and also causes material loss, further causes unbalance of the formula, causes unstable product quality, and the removed material bag needs to be separately processed, and is not environment-friendly.
The melting point range of the applicable packaging material for ethylene propylene diene provided by the invention is 55-90 ℃, compared with the traditional packaging material, the applicable packaging material can be added into an ethylene propylene diene thermal insulation material heat insulation layer along with raw materials in the production mixing process, the packaging bag can be melted in the mixing process and can be blended and compatible with the ethylene propylene diene thermal insulation material after being melted, manual bag opening and feeding are not needed, the material flying of the thermal insulation material in the mixing and feeding process is eliminated, on one hand, the production workshop environment is improved, and on the other hand, the garbage treatment of the material bag is not needed subsequently, the environmental pollution of the material and the packaging material is reduced, on the other hand, the material loss is reduced, the possibility of unbalanced formula is reduced, and the product quality is improved.
In actual use, a suitable ethylene propylene diene monomer can be selected according to the property of the ethylene propylene diene monomer heat-insulating material to be put into a packaging material, when the content of general vinyl acetate in the ethylene-vinyl acetate copolymer is 5-10%, the vinyl acetate monomer is introduced into ethylene molecules, so that the high crystallinity of the material is reduced, the toughness, the impact resistance, the filler compatibility and the heat sealing performance are improved, various plastic film products can be prepared, the melting point range is 55-90 ℃, the temperature is lower than that of the existing rubber mixing process, the ethylene propylene diene monomer heat-insulating material can be blended and compatible with the ethylene propylene diene monomer heat-insulating material in the mixing process, and the products can be blended and compatible with the ethylene propylene diene monomer heat-insulating material after being melted.
When ethylene and butene or octene are copolymerized, the mass ratio of the butene or octene is between 15% and 25%, unsaturated bonds are not contained in molecules of the butene or octene, and the content of tertiary carbon atoms is less. The flexible short branched chain structure of butene or octene enables free volume to exist between high molecular chains, so that the thermal insulation material has excellent physical and mechanical properties such as high elasticity, high strength and high elongation and a lower melting point, is lower than the mixing production process temperature of the ethylene propylene diene monomer thermal insulation material, can be mixed into a rubber material after being put into the ethylene propylene diene monomer thermal insulation material along with raw materials, can be mixed and compatible with the ethylene propylene diene monomer thermal insulation material after being melted, and can improve the defects that the thermal insulation layer is easy to roll off and poor in flow property after the copolymer of ethylene and alpha-olefin is mixed with the ethylene propylene diene monomer thermal insulation material to a certain extent.
The surface treatment of the raw materials which can be used for the Ethylene Propylene Diene Monomer (EPDM) and can be put into the packaging material is to remove chemical raw materials such as oil agents and the like on the surface of the material in the production process of the packaging material and prevent other substances from entering the EPDM thermal insulation material to influence the final performance of the thermal insulation material product. The reaction of the anhydride groups (maleic anhydride) with component A requires a peroxide, preferably dicumyl peroxide.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. An investable packaging material for ethylene propylene diene monomer is characterized in that: comprising component A and a compound containing anhydride groups;
the component A is one or two of ethylene-vinyl acetate copolymer and ethylene and alpha-olefin copolymer;
the vinyl acetate content in the ethylene-vinyl acetate copolymer material is 5-10 percent;
the alpha-olefin in the copolymer of ethylene and alpha-olefin is butene or octene.
2. The investable packaging material for ethylene propylene diene monomer according to claim 1, wherein: the compound containing the acid anhydride group is maleic anhydride, and the mass ratio of the component A to the maleic anhydride is 100.
3. The investable packaging material for ethylene propylene diene monomer according to claim 1, wherein: the melting point range of the component A is 55-90 ℃, and the component A can be blended and compatible with the ethylene propylene diene monomer thermal insulation material.
4. The drop-in packaging material for ethylene propylene diene monomer according to claim 1, wherein: the component A is an ethylene-vinyl acetate copolymer and an ethylene and alpha-olefin copolymer, and the mass ratio of the ethylene-vinyl acetate copolymer to the ethylene and alpha-olefin copolymer is 1.
5. The drop-in packaging material for ethylene propylene diene monomer according to claim 1, wherein: when the alpha-olefin in the copolymer of ethylene and alpha-olefin is butylene, the mass proportion of the butylene in the copolymer of ethylene and butylene is 15-25%.
6. The investable packaging material for ethylene propylene diene monomer according to claim 1, wherein: when the alpha-olefin in the copolymer of ethylene and alpha-olefin is octene, the mass ratio of octene in the copolymer of ethylene and octene is 15-25%.
7. A preparation method of the investable packaging material for Ethylene Propylene Diene Monomer (EPDM) as claimed in claim 1 is characterized by comprising the following steps:
s1: weighing a component A: one or two of ethylene-vinyl acetate copolymer and ethylene and alpha-olefin copolymer;
the vinyl acetate content in the ethylene-vinyl acetate copolymer material is 5-10 percent;
the alpha-olefin in the copolymer of ethylene and alpha-olefin is butene or octene;
s2: carrying out surface treatment on the component A;
s3: modifying the component A after surface treatment by using a compound containing an acid anhydride group;
s4: and (3) carrying out molding treatment on the modified component A.
8. The method for preparing the investable packaging material for ethylene propylene diene monomer according to claim 7, wherein the method comprises the following steps: the surface treatment of the component A comprises the following steps:
putting the component A into a container containing a solvent, and soaking for 2-4 h; taking the component A out of the container after soaking, then repeatedly cleaning the component A with clear water, and then spreading the component A into an electric heating air blast drying box for drying to obtain a surface-treated component A; the solvent is ethyl acetate solution with the purity of more than or equal to 90 percent.
9. The method for preparing the input packaging material for ethylene propylene diene monomer according to claim 7, wherein the method comprises the following steps: the method for modifying the component A after surface treatment by using the compound containing the acid anhydride group comprises the following steps:
weighing the surface-treated component A, maleic anhydride and dicumyl peroxide according to a mass ratio of 100.2.
10. The method for preparing the investable packaging material for ethylene propylene diene monomer according to claim 7, wherein the method comprises the following steps:
the modified component A is molded, and the method comprises the following steps:
and melting, cooling, granulating, drying, extruding, blowing and cutting the modified component A to obtain the packaging material for the ethylene propylene diene monomer.
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| DE3015056A1 (en) * | 1980-04-18 | 1982-01-14 | Toppan Printing Co., Ltd., Tokyo | Laminated packaging material - comprising substrate, and resin layer comprising EVA copolymer and polymer of ethylene! or alpha-olefin! with unsatd. carboxylic acid |
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