Preparation method of antirat EVA (ethylene-vinyl acetate copolymer) foamed shoe material

A shoe material and rodent-proof technology, applied in the field of shoe materials, can solve the problem of not having rodent-proof function, etc., and achieve the effects of improving antibacterial and anti-inflammatory performance, improving rodent-proof performance, and good antibacterial and anti-inflammatory activity.

Inactive Publication Date: 2016-05-25
SUZHOU JINGRO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material provided by this patent overcomes the defects in the degradation performance of traditional EVA foam shoe materials, but it does not have the same anti-rat function as the EVA shoe materials on the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of preparation method of anti-rat EVA foam shoe material, its steps are as follows:

[0025] (1) Air-dry after the borneol leaves are cleaned, cross 30 mesh sieves after pulverizing with a pulverizer, place in the extractor and add water and steam distill for 4 hours to obtain the mixture, the weight ratio of borneol leaves and water is 1:12, After extracting with ether, add anhydrous sodium sulfate for dehydration, remove the ether by rotary evaporation under reduced pressure, and obtain borneol leaf volatile oil;

[0026] (2) Add the borneol leaf volatile oil, CTAB, and deionized water obtained in step (1) into a constant temperature water bath, stir at 55°C and 1300rpm for 20 minutes to obtain a mixed solution, and add the mixed solution and ammonium persulfate to a four-necked flask and stirring at 400rpm, heated to 60°C and began to add MMA dropwise, heated to 70°C after dropwise addition, added AA dropwise and reacted for 4 hours, borneol leaf volatile oil,...

Embodiment 2

[0030] A kind of preparation method of anti-rat EVA foam shoe material, its steps are as follows:

[0031] (1) Air-dry after the borneol leaves are cleaned, cross 30 mesh sieves after pulverizing with a pulverizer, place in the extractor and add water and steam distill for 4 hours to obtain the mixture, the weight ratio of borneol leaves and water is 1:12, After extracting with ether, add anhydrous sodium sulfate for dehydration, remove the ether by rotary evaporation under reduced pressure, and obtain borneol leaf volatile oil;

[0032] (2) Add the borneol leaf volatile oil, CTAB, and deionized water obtained in step (1) into a constant temperature water bath, stir at 55°C and 1300rpm for 20 minutes to obtain a mixed solution, and add the mixed solution and ammonium persulfate to a four-necked flask and stirring at 400rpm, heated to 60°C and began to add MMA dropwise, heated to 70°C after dropwise addition, added AA dropwise and reacted for 4 hours, borneol leaf volatile oil,...

Embodiment 3

[0036] A kind of preparation method of anti-rat EVA foam shoe material, its steps are as follows:

[0037] (1) Air-dry after the borneol leaves are cleaned, cross 30 mesh sieves after pulverizing with a pulverizer, place in the extractor and add water and steam distill for 4 hours to obtain the mixture, the weight ratio of borneol leaves and water is 1:12, After extracting with ether, add anhydrous sodium sulfate for dehydration, remove the ether by rotary evaporation under reduced pressure, and obtain borneol leaf volatile oil;

[0038](2) Add the borneol leaf volatile oil, CTAB, and deionized water obtained in step (1) into a constant temperature water bath, stir at 55°C and 1300rpm for 20 minutes to obtain a mixed solution, and add the mixed solution and ammonium persulfate to a four-necked flask and stirring at 400rpm, heated to 60°C and began to add MMA dropwise, heated to 70°C after dropwise addition, added AA dropwise and reacted for 4 hours, borneol leaf volatile oil, ...

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PUM

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Abstract

The invention provides a preparation method of an antirat EVA (ethylene-vinyl acetate copolymer) foamed shoe material. The preparation method includes the steps of (1), cleaning borneol leaves prior to air drying, pulverizing, sieving, distilling in an extractor to obtain a mixture, dehydrating after extraction and performing reduced-pressure rotary evaporation so as to obtain borneol leaf volatile oil; (2), adding the borneol leaf volatile oil, CTAB (cetyltrimethyl ammonium bromide) and deionized water into a thermostatic water bath, stirring to obtain a mixed liquor, stirring the mixed liquor and ammonium persulfate, starting to add MMA (methyl methacrylate) dropwise after heating, heating to 70 DEG C after adding dropwise is completed, reacting after AA is added dropwise, and performing suction filtration, scrubbing, drying and grinding so as to obtain microcapsule antirat substance for plastics; (3), uniformly mixing the EVA, a plasticizer, filler, a coupling agent and the antirat substance for plastics, adding a uniformly mixed mixture into a banbury mixer, and adding a cross-linking agent, an auxiliary cross-linking agent and a foaming agent for banburying when the temperature reaches 100 DEG C so as to obtain a mixed material; (4), adding the mixed material into an open mill for open milling prior to granulation, and subjecting granules to mould pressing and foaming so as to obtain the antirat EVA foamed shoe material. The prepared antirat EVA foamed shoe material has excellent antirat performance.

Description

Technical field: [0001] The invention relates to a shoe material, in particular to a preparation method of a rodent-proof EVA foam shoe material. Background technique: [0002] Ethylene-vinyl acetate copolymer, abbreviated as EVA in English, is coded as 1314, and its molecular formula is (C2H4)x.(C4H6O2)y. EVA can only be used as a plastic when the content of vinyl acetate in it is less than 20%. EVA has good low temperature resistance, and its thermal decomposition temperature is low, about 230°C. With the increase of molecular weight, the softening point of EVA increases, and the processability and surface gloss of plastic parts decrease, but the strength increases and the impact The toughness and environmental stress cracking resistance are improved, and the chemical resistance and oil resistance of EVA are slightly worse than that of PE and PVC, and the change is more obvious with the increase of vinyl acetate content. The performance improvement of EVA compared with P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L91/00C08K3/34C08K5/54C08K9/10C08K5/00C08F220/14C08F220/06
CPCC08L23/0853C08F220/14
Inventor 黄超
Owner SUZHOU JINGRO TECH
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