CN113402837A - EVA (ethylene-vinyl acetate) treating agent and preparation method thereof - Google Patents
EVA (ethylene-vinyl acetate) treating agent and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an EVA (ethylene vinyl acetate) treating agent which comprises the following components in parts by mass: 1-3 parts of SBS, 2-5 parts of EVA-2655, 2-5 parts of maleic anhydride, 0.2-0.5 part of dibenzoyl peroxide, 0.5-1 part of cross-linking agent, 0.5-1 part of hydroxyethyl methacrylate, 8-15 parts of methyl methacrylate, 5-10 parts of methylcyclohexane, 10-15 parts of cyclohexane, 20-25 parts of butanone, 10-15 parts of dimethyl carbonate, 20-25 parts of ethyl acetate, 0.1-0.3 part of anti-aging agent, 0.5-1 part of chlorinated polyethylene, 0.5-1 part of chlorinated rubber and 2-5 parts of butylated hydroxytoluene. The invention also discloses a preparation method of the EVA treating agent. The EVA treating agent disclosed by the invention is good in yellowing resistance and weather resistance, free of roughening and irradiation, and better in permeability and ageing resistance.
Description
Technical Field
The invention belongs to the technical field of processing preparations, and particularly relates to an EVA (ethylene vinyl acetate) treating agent and a preparation method thereof.
Background
Ethylene-vinyl acetate copolymer, EVA for short, is made by copolymerizing ethylene and acetic acid. The EVA has wide application fields, the annual market consumption of China is continuously increased, and the EVA is particularly applied to the shoe soles and interior materials of middle-high-grade travel shoes, climbing shoes, slippers and sandals in the shoe manufacturing industry.
At present, shoe soles in the market are mostly made of EVA (ethylene vinyl acetate) or rubber materials, the cost is controllable, the elasticity and flexibility can be adjusted according to needs, and the requirements of people are basically met. In the process of manufacturing the shoes, the shoe materials need to be processed, so that the adhesive force between the shoe materials and the adhesive is improved. However, because EVA is a weak polar material in high polymer, it has no better affinity with neoprene adhesive and polyurethane adhesive with strong polarity. A widely used treatment protocol is the use of a treating agent. The treating agent is a medium between the shoe material and the adhesive, and can enable the non-polar shoe material and the polar adhesive to be tightly attached together. At present, the adhesion problem of the EVA material is solved by adopting a method for synthesizing an EVA surface treating agent by grafting and modifying SBS monomers such as acrylic acid and the like, but solvents such as toluene and the like are used, are volatile when used, easily cause pollution to the environment and influence the health of operators.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the EVA treating agent which has good yellowing resistance and weather resistance, and can avoid roughening and irradiation.
The invention also aims to provide a preparation method of the EVA treating agent.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an EVA (ethylene-vinyl acetate) treating agent which comprises the following components in parts by mass: 1-3 parts of SBS, 2-5 parts of EVA-2655, 2-5 parts of maleic anhydride, 0.2-0.5 part of dibenzoyl peroxide, 0.5-1 part of cross-linking agent, 0.5-1 part of hydroxyethyl methacrylate, 8-15 parts of methyl methacrylate, 5-10 parts of methylcyclohexane, 10-15 parts of cyclohexane, 20-25 parts of butanone, 10-15 parts of dimethyl carbonate, 20-25 parts of ethyl acetate, 0.1-0.3 part of anti-aging agent, 0.5-1 part of chlorinated polyethylene, 0.5-1 part of chlorinated rubber and 2-5 parts of butylated hydroxytoluene.
Further, the EVA treating agent comprises the following components in parts by mass: 1 part of SBS, 2655 parts of EVA (ethylene-vinyl acetate), 2 parts of maleic anhydride, 0.2 part of dibenzoyl peroxide, 0.5 part of crosslinking agent, 0.5 part of hydroxyethyl methacrylate, 8 parts of methyl methacrylate, 5 parts of methylcyclohexane, 10 parts of cyclohexane, 20 parts of butanone, 10 parts of dimethyl carbonate, 20 parts of ethyl acetate, 0.1 part of anti-aging agent, 0.5 part of chlorinated polyethylene, 0.5 part of chlorinated rubber and 2 parts of butylated hydroxytoluene.
Further, the SBS is styrene butadiene rubber, and using korean LG 411H, one skilled in the art can select the same type of product as needed.
Further, the cross-linking agent is KH-560.
Further, the antioxidant is BHT.
Chlorinated polyethylene can improve the cutting degree of the EVA treating agent; the chlorinated rubber can improve the permeability of the obtained EVA treating agent; due to the use of the dibutylhydroxytoluene, the product has better ageing resistance and longer storage life. The addition of methyl methacrylate and dimethyl carbonate can improve the above three effects.
Further, the preparation method of the EVA treating agent comprises the following steps:
A. mixing methylcyclohexane and cyclohexane, stirring uniformly, adding SBS, EVA-265 and maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, adding hydroxyethyl methacrylate and methyl methacrylate when the internal temperature reaches 80 ℃, mixing and stirring uniformly;
C. adding dibenzoyl peroxide and dimethyl carbonate into ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the mixture into the mixture obtained in the step B, adding a cross-linking agent, stirring and mixing uniformly, keeping the temperature at 85-90 ℃, starting reaction for 4 hours, and then cooling to terminate the reaction;
D. cooling the internal temperature to below 50 ℃, adding an anti-aging agent, and stirring and mixing;
E. and D, adding chlorinated polyethylene, chlorinated rubber and dibutyl hydroxy toluene into butanone, mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Compared with the prior art, the invention has the following beneficial effects:
1. the EVA treating agent has good EVA treating effect, good yellowing resistance and good weather resistance.
2. The EVA treating agent has good treatment effect on various EVA, and the general material can be free from roughening and irradiation.
3. The EVA treating agent disclosed by the invention is free of triphenyl treating agent, and has better permeability and ageing resistance.
Detailed Description
The present invention will be described in more detail below with reference to specific preferred embodiments and examples of effects, but the present invention is not limited to the following examples.
The invention discloses an EVA (ethylene vinyl acetate) treating agent which comprises the following components in parts by mass:
1-3 parts of SBS, 2-5 parts of EVA-2655, 2-5 parts of maleic anhydride, 0.2-0.5 part of dibenzoyl peroxide, 0.5-1 part of cross-linking agent, 0.5-1 part of hydroxyethyl methacrylate, 8-15 parts of methyl methacrylate, 5-10 parts of methylcyclohexane, 10-15 parts of cyclohexane, 20-25 parts of butanone, 10-15 parts of dimethyl carbonate, 20-25 parts of ethyl acetate, 0.1-0.3 part of anti-aging agent, 0.5-1 part of chlorinated polyethylene, 0.5-1 part of chlorinated rubber and 2-5 parts of butylated hydroxytoluene.
The SBS is styrene-butadiene rubber, and korean LG 411H is used. The cross-linking agent is KH-560; the anti-aging agent is BHT. The chlorinated polyethylene was purchased from eastern cottage, japan. The chlorinated rubber is Bayer S-20. Dibutylhydroxytoluene was purchased from the winning Germany.
The preparation method of the EVA treating agent comprises the following steps:
A. mixing methylcyclohexane and cyclohexane, stirring uniformly, adding SBS, EVA-265 and maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, adding hydroxyethyl methacrylate and methyl methacrylate when the internal temperature reaches 80 ℃, mixing and stirring uniformly;
C. adding dibenzoyl peroxide and dimethyl carbonate into ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the mixture into the mixture obtained in the step B, adding a cross-linking agent, stirring and mixing uniformly, keeping the temperature at 85-90 ℃, starting reaction for 4 hours, and then cooling to terminate the reaction;
D. cooling the internal temperature to below 50 ℃, adding an anti-aging agent, and stirring and mixing;
E. and D, adding chlorinated polyethylene, chlorinated rubber and dibutyl hydroxy toluene into butanone, mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
The present invention will now be further illustrated with reference to specific examples.
Examples 1 to 3 and comparative examples 1 to 5
Examples 1 to 3 and comparative examples 1 to 5 were prepared in the following amounts of the components shown in Table 1.
TABLE 1 component ratios of examples 1-3 and comparative examples 1-5
Example 1
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 5 parts of methylcyclohexane and 10 parts of cyclohexane, stirring uniformly, adding 1 part of SBS, 5 parts of EVA-265 and 2 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, 0.5 part of hydroxyethyl methacrylate and 8 parts of methyl methacrylate are added when the internal temperature reaches 80 ℃ and are mixed and stirred uniformly;
C. adding 0.2 part of dibenzoyl peroxide and 10 parts of dimethyl carbonate into 20 parts of ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the mixture into the mixture obtained in the step B, adding 0.5 part of KH-560, stirring and mixing uniformly, keeping the temperature at 85-90 ℃ to start reaction for 4 hours, and then cooling to stop the reaction;
D. adding 0.1 part of BHT when the internal temperature is reduced to below 50 ℃, and stirring and mixing;
E. and D, adding 0.5 part of chlorinated polyethylene, 0.5 part of Bayer S-20 and 2 parts of dibutyl hydroxy toluene into 20 parts of butanone, mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Example 2
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 8 parts of methylcyclohexane and 12 parts of cyclohexane, stirring uniformly, adding 2 parts of SBS, 8 parts of EVA-265 and 3.5 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, 0.8 part of hydroxyethyl methacrylate and 10 parts of methyl methacrylate are added when the internal temperature reaches 80 ℃ and are mixed and stirred uniformly;
C. adding 0.35 part of dibenzoyl peroxide and 13 parts of dimethyl carbonate into 22 parts of ethyl acetate when the internal temperature reaches 80-85 ℃, stirring and dissolving, adding into the mixture obtained in the step B, adding 0.8 part of KH-560, stirring and mixing uniformly, keeping the temperature at 85-90 ℃, starting to react for 4 hours, and cooling to stop the reaction;
D. adding 0.2 part of BHT when the internal temperature is reduced to below 50 ℃, and stirring and mixing;
E. and D, adding 0.8 part of chlorinated polyethylene, 0.8 part of Bayer S-20 and 3.5 parts of dibutyl hydroxy toluene into 22 parts of butanone, mixing and dissolving, adding the mixture into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Example 3
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 10 parts of methylcyclohexane and 15 parts of cyclohexane, uniformly stirring, adding 3 parts of SBS, 10 parts of EVA-265 and 5 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, adding 1 part of hydroxyethyl methacrylate and 15 parts of methyl methacrylate when the internal temperature reaches 80 ℃, and uniformly stirring;
C. adding 0.5 part of dibenzoyl peroxide and 15 parts of dimethyl carbonate into 25 parts of ethyl acetate when the internal temperature reaches 80-85 ℃, stirring and dissolving, adding into the mixture obtained in the step B, adding 1 part of KH-560, stirring and mixing uniformly, keeping the temperature at 85-90 ℃, starting to react for 4 hours, and cooling to stop the reaction;
D. adding 0.3 part of BHT when the internal temperature is reduced to below 50 ℃, and stirring and mixing;
E. and D, adding 1 part of chlorinated polyethylene, 1 part of Bayer S-20 and 5 parts of dibutyl hydroxy toluene into 25 parts of butanone, mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Comparative example 1
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 5 parts of methylcyclohexane and 10 parts of cyclohexane, stirring uniformly, adding 1 part of SBS, 5 parts of EVA-265 and 2 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, 0.5 part of hydroxyethyl methacrylate and 8 parts of methyl methacrylate are added when the internal temperature reaches 80 ℃ and are mixed and stirred uniformly;
C. adding 0.2 part of dibenzoyl peroxide and 10 parts of dimethyl carbonate into 20 parts of ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the mixture into the mixture obtained in the step B, adding 0.5 part of KH-560, stirring and mixing uniformly, keeping the temperature at 85-90 ℃ to start reaction for 4 hours, and then cooling to stop the reaction;
D. adding 0.1 part of BHT when the internal temperature is reduced to below 50 ℃, and stirring and mixing;
E. and D, adding 0.5 part of Bayer S-20 and 2 parts of butylated hydroxytoluene into 20 parts of butanone for mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Comparative example 2
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 5 parts of methylcyclohexane and 10 parts of cyclohexane, stirring uniformly, adding 1 part of SBS, 5 parts of EVA-265 and 2 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, 0.5 part of hydroxyethyl methacrylate and 8 parts of methyl methacrylate are added when the internal temperature reaches 80 ℃ and are mixed and stirred uniformly;
C. adding 0.2 part of dibenzoyl peroxide and 10 parts of dimethyl carbonate into 20 parts of ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the mixture into the mixture obtained in the step B, adding 0.5 part of KH-560, stirring and mixing uniformly, keeping the temperature at 85-90 ℃ to start reaction for 4 hours, and then cooling to stop the reaction;
D. adding 0.1 part of BHT when the internal temperature is reduced to below 50 ℃, and stirring and mixing;
E. and D, adding 0.5 part of chlorinated polyethylene and 2 parts of butylated hydroxytoluene into 20 parts of butanone for mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Comparative example 3
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 5 parts of methylcyclohexane and 10 parts of cyclohexane, stirring uniformly, adding 1 part of SBS, 5 parts of EVA-265 and 2 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, 0.5 part of hydroxyethyl methacrylate and 8 parts of methyl methacrylate are added when the internal temperature reaches 80 ℃ and are mixed and stirred uniformly;
C. adding 0.2 part of dibenzoyl peroxide and 10 parts of dimethyl carbonate into 20 parts of ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the mixture into the mixture obtained in the step B, adding 0.5 part of KH-560, stirring and mixing uniformly, keeping the temperature at 85-90 ℃ to start reaction for 4 hours, and then cooling to stop the reaction;
D. adding 0.1 part of BHT when the internal temperature is reduced to below 50 ℃, and stirring and mixing;
E. and D, adding 0.5 part of chlorinated polyethylene and 0.5 part of Bayer S-20 into 20 parts of butanone for mixing and dissolving, then adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Comparative example 4
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 5 parts of methylcyclohexane and 10 parts of cyclohexane, stirring uniformly, adding 1 part of SBS, 5 parts of EVA-265 and 2 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. when the complete dissolution is finished, adding 0.5 part of hydroxyethyl methacrylate for mixing when the internal temperature reaches 80 ℃, and stirring uniformly;
C. adding 0.2 part of dibenzoyl peroxide and 10 parts of dimethyl carbonate into 20 parts of ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the mixture into the mixture obtained in the step B, adding 0.5 part of KH-560, stirring and mixing uniformly, keeping the temperature at 85-90 ℃ to start reaction for 4 hours, and then cooling to stop the reaction;
D. adding 0.1 part of BHT when the internal temperature is reduced to below 50 ℃, and stirring and mixing;
E. and D, adding 0.5 part of chlorinated polyethylene, 0.5 part of Bayer S-20 and 2 parts of dibutyl hydroxy toluene into 20 parts of butanone, mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Comparative example 5
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 5 parts of methylcyclohexane and 10 parts of cyclohexane, stirring uniformly, adding 1 part of SBS, 5 parts of EVA-265 and 2 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. after complete dissolution, 0.5 part of hydroxyethyl methacrylate and 8 parts of methyl methacrylate are added when the internal temperature reaches 80 ℃ and are mixed and stirred uniformly;
C. adding 0.2 part of dibenzoyl peroxide into 20 parts of ethyl acetate when the internal temperature reaches 80-85 ℃, stirring and dissolving, adding into the mixture obtained in the step B, adding 0.5 part of KH-560, stirring and mixing uniformly, keeping the temperature at 85-90 ℃, starting to react for 4 hours, and cooling to stop the reaction;
D. adding 0.1 part of BHT when the internal temperature is reduced to below 50 ℃, and stirring and mixing;
E. and D, adding 0.5 part of chlorinated polyethylene, 0.5 part of Bayer S-20 and 2 parts of dibutyl hydroxy toluene into 20 parts of butanone, mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
Comparative example 6
An EVA treating agent is prepared according to the following preparation method, wherein the EVA treating agent comprises the following components in parts by mass:
A. mixing 300 parts of methylcyclohexane and 350 parts of cyclohexane, stirring uniformly, adding 80 parts of SBS, 50 parts of EVA-265 and 15 parts of maleic anhydride, stirring, starting heating and filling nitrogen for protection until the reaction is finished;
B. when the complete dissolution is finished, adding 53 parts of hydroxyethyl methacrylate for mixing when the internal temperature reaches 80 ℃, and uniformly stirring;
C. adding 2 parts of dibenzoyl peroxide into 680 parts of ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the dibenzoyl peroxide into the mixture obtained in the step B, adding 0.55 part of KH-560 into the mixture, stirring and mixing the mixture uniformly, keeping the temperature at 85-90 ℃ to start reaction for 4 hours, and then cooling to stop the reaction;
D. and 3 parts of BHT is added when the internal temperature is reduced to below 50 ℃, and the mixture is stirred and mixed, so that the obtained product is the EVA treating agent.
Examples of Effect test
The same kind and the same quality of EVA was treated by using examples 1 to 3 and comparative examples 1 to 6, respectively, to obtain samples 1 to 3 and comparative samples 1 to 6, and the following properties were examined.
1. Yellowing resistance
According to the method A in the yellowing resistance test standard HG/T3689-2014, a light-colored or white product is easy to generate a yellowing phenomenon under the long-time irradiation of sunlight, a solar lamp and a heating temperature control device are used for simulating a natural environment, the power of a bulb is 300W, the change of the surface color of the sample is observed within 24h, the color change degree of the sample is determined, and therefore the yellowing resistance of the material under the radiation of the sunlight is judged.
According to a method B in a yellowing resistance test standard HG/T3689-2014, a light-colored or white product is easy to generate a yellowing phenomenon under long-time ultraviolet irradiation, a sample is irradiated by ultraviolet rays, the change of the surface color of the sample is observed within 4h by selecting an ultraviolet lamp tube with the power of 30W, and the discoloration degree of the sample is determined, so that the yellowing resistance of the material under the ultraviolet irradiation is judged.
The results are shown in table 2 below.
TABLE 2 yellowing resistance test results
As can be seen from the data in Table 2, the EVA treating agents obtained in examples 1-3 can improve the yellowing resistance of the obtained products by adding chlorinated polyethylene, chlorinated rubber and dibutyl hydroxy toluene, and can stably maintain the yellowing resistance of the products after high-temperature treatment and ultraviolet light treatment respectively. As can be seen from comparative examples 1 to 3, the addition of chlorinated polyethylene, chlorinated rubber and dibutylhydroxytoluene respectively has an effect of improving the yellowing resistance of the obtained product. In comparative examples 4 to 5, it can be seen that the yellowing resistance of methyl methacrylate and dimethyl carbonate to chlorinated polyethylene, chlorinated rubber and dibutylhydroxytoluene is improved, and the performance of the obtained EVA treating agent is superior to that of the existing commercial products.
2. Free from roughening and irradiation
The coarsening and irradiation requirements for samples 1-3 and comparative samples 1-6 are shown in Table 3 below.
TABLE 3 coarsening, irradiation demand situation
The EVA material obtained by the invention can be directly processed without roughening.
3. Anti-aging performance
The samples were aged at 70 ℃ and 95% relative humidity for 720 hours, and the appearance change and the breaking strength after the treatment were evaluated, and the results are shown in Table 4 below.
TABLE 4 anti-aging Performance test results
As can be seen from the data in Table 4, the EVA treating agents obtained in examples 1-3 can improve the aging resistance of the obtained products by adding chlorinated polyethylene, chlorinated rubber and dibutyl hydroxy toluene, and can stably maintain the performance of the products under the conditions of high temperature and high humidity. As can be seen from comparative examples 1 to 3, the addition of chlorinated polyethylene, chlorinated rubber and dibutylhydroxytoluene respectively has an effect of improving the aging resistance and the breaking strength of the obtained product.
In comparative examples 4-5, it can be seen that the performance improvement of methyl methacrylate and dimethyl carbonate on chlorinated polyethylene, chlorinated rubber and dibutyl hydroxy toluene has a boosting effect, and the performance of the EVA treating agent obtained by the invention is superior to that of the existing commercially available products.
The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (5)
1. The EVA treating agent is characterized by comprising the following components in parts by mass: 1-3 parts of SBS, 2-5 parts of EVA-2655, 2-5 parts of maleic anhydride, 0.2-0.5 part of dibenzoyl peroxide, 0.5-1 part of cross-linking agent, 0.5-1 part of hydroxyethyl methacrylate, 8-15 parts of methyl methacrylate, 5-10 parts of methylcyclohexane, 10-15 parts of cyclohexane, 20-25 parts of butanone, 10-15 parts of dimethyl carbonate, 20-25 parts of ethyl acetate, 0.1-0.3 part of anti-aging agent, 0.5-1 part of chlorinated polyethylene, 0.5-1 part of chlorinated rubber and 2-5 parts of butylated hydroxytoluene.
2. The EVA treating agent according to claim 1, which comprises the following components in parts by mass: 1 parts of SBS, 2655 parts of EVA (ethylene vinyl acetate), 2 parts of maleic anhydride, 0.2 part of dibenzoyl peroxide, 0.5 part of cross-linking agent, 0.5 part of hydroxyethyl methacrylate, 8 parts of methyl methacrylate, 5 parts of methylcyclohexane, 10 parts of cyclohexane, 20 parts of butanone, 10 parts of dimethyl carbonate, 20 parts of ethyl acetate, 0.1 part of anti-aging agent, 0.5 part of chlorinated polyethylene, 0.5 part of chlorinated rubber and 2 parts of butylated hydroxytoluene.
3. The EVA treating agent according to any one of claims 1 to 2, wherein the crosslinking agent is KH-560.
4. The EVA treating agent according to any one of claims 1 to 2, wherein the antioxidant is BHT.
5. The EVA treating agent according to any one of claims 1 to 4, wherein the preparation method comprises the following steps:
A. mixing methylcyclohexane and cyclohexane, stirring uniformly, adding SBS, EVA-265 and maleic anhydride, stirring, starting heating and filling nitrogen to protect until the reaction is finished;
B. after complete dissolution, adding hydroxyethyl methacrylate and methyl methacrylate when the internal temperature reaches 80 ℃, mixing and stirring uniformly;
C. adding dibenzoyl peroxide and dimethyl carbonate into ethyl acetate to be stirred and dissolved when the internal temperature reaches 80-85 ℃, adding the mixture into the mixture obtained in the step B, adding a cross-linking agent, stirring and mixing uniformly, keeping the temperature at 85-90 ℃, starting reaction for 4 hours, and then cooling to terminate the reaction;
D. cooling the internal temperature to below 50 ℃, adding an anti-aging agent, and stirring and mixing;
E. and D, adding chlorinated polyethylene, chlorinated rubber and dibutyl hydroxy toluene into butanone, mixing and dissolving, adding into the mixture obtained in the step D, and continuously stirring to obtain the product, namely the EVA treating agent.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113736334A (en) * | 2021-09-29 | 2021-12-03 | 中山市合力化工有限公司 | Two-component rubber and plastic material surface treating agent and preparation method thereof |
| CN114316884A (en) * | 2022-01-14 | 2022-04-12 | 福建汉森新材料技术有限公司 | Environment-friendly EVA (ethylene-vinyl acetate) heat transfer printing treatment-free glue |
| CN115595107A (en) * | 2022-10-14 | 2023-01-13 | 广东裕田霸力科技股份有限公司（Cn） | Polishing-free EVA (ethylene vinyl acetate) treating agent and preparation method thereof |
| CN115678148A (en) * | 2022-12-06 | 2023-02-03 | 深圳新联胜光电科技有限公司 | Polyethylene sheath material for optical fiber cable and preparation method thereof |
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| CN113736334A (en) * | 2021-09-29 | 2021-12-03 | 中山市合力化工有限公司 | Two-component rubber and plastic material surface treating agent and preparation method thereof |
| CN114316884A (en) * | 2022-01-14 | 2022-04-12 | 福建汉森新材料技术有限公司 | Environment-friendly EVA (ethylene-vinyl acetate) heat transfer printing treatment-free glue |
| CN115595107A (en) * | 2022-10-14 | 2023-01-13 | 广东裕田霸力科技股份有限公司（Cn） | Polishing-free EVA (ethylene vinyl acetate) treating agent and preparation method thereof |
| CN115595107B (en) * | 2022-10-14 | 2023-06-16 | 广东裕田霸力科技股份有限公司 | Polishing-free EVA (ethylene-vinyl acetate copolymer) treating agent and preparation method thereof |
| CN115678148A (en) * | 2022-12-06 | 2023-02-03 | 深圳新联胜光电科技有限公司 | Polyethylene sheath material for optical fiber cable and preparation method thereof |
| CN115678148B (en) * | 2022-12-06 | 2023-09-22 | 深圳新联胜光电科技有限公司 | Polyethylene sheath material for optical fiber cable and preparation method thereof |
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Application publication date: 20210917 |