CN109265812A - A kind of light anti-tearing EVA shoe bottom material and preparation method thereof - Google Patents
A kind of light anti-tearing EVA shoe bottom material and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/107—Nitroso compounds
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/0023—Use of organic additives containing oxygen
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
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- C08J2417/00—Characterised by the use of reclaimed rubber
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Abstract
The invention discloses a kind of light anti-tearing EVA shoe bottom material and preparation method thereof, preparing the raw material of light anti-tearing EVA shoe bottom material by its parts by weight includes: 40 parts~60 parts of ethylene-vinyl acetate copolymer, 2 parts~6 parts of regnerated rubber powder, 3 parts~9 parts of liquid nitrile rubber, 1 part~5 parts of talcum powder, 0.5 part~2.5 parts of nm-class active calcium carbonate, 0.4 part~0.8 part of stearic acid, 1.2 parts~2.5 parts of modified zinc oxide whisker, 1.5 parts~3.0 parts of altax, 2.5 parts~7.5 parts of foaming agent, 0.3 part~0.8 part of release agent.The density of light anti-tearing EVA shoe bottom material prepared by the present invention is small, quality is light, tensile strength and tear strength properties are excellent, the resilience performance of product is preferable, deformation is less prone to after dress, increase service life, and preparation method is simple, and preparation process is easy to operate, is suitble to large-scale production application.
Description
Technical field
The present invention relates to sole material technical fields, and in particular to a kind of light anti-tearing EVA shoe bottom material and its preparation
Method.
Background technique
Material used in EVA shoe bottom is ethylene/vinyl acetate copolymer, it is by ethylene (E) and vinyl acetate (VA)
It is copolymerized and is made, compared with polyethylene, due to introducing vinyl acetate monomer in the strand of EVA, to reduce highly crystalline
Degree improves flexibility, impact resistance, filler intermiscibility and heat sealing performance, therefore EVA shoe bottom is with light, soft, comfortable
The characteristics of.But because the density of common EVA material is smaller, mechanical property and flexibility are often bad, as sole material
It often will appear fracture when material, phenomena such as resilience is bad, reduce the service life of sole material.
Chinese patent CN103194019A discloses a kind of tear-proof EVA foam shoe material and its manufacturing method, tear-proof EVA
The raw material of foaming shoe material forms are as follows: ethylene-vinyl acetate copolymer, ethylene-octene copolymer, hydrogenated styrene-butadiene-
Styrene block copolymer, ethylene-acrylic acid copolymer, talcum powder, stearic acid, zinc stearate, zinc oxide, peroxidating diisopropyl
Benzene, azodicarbonamide and Masterbatch, manufacturing method includes: will be stand-by after cumyl peroxide and azoic foaming agent mixing,
It is poured into after separately remaining raw material is mixed in mixer after carrying out first stage mixing and adds cumyl peroxide and azo hair
The mixture of infusion carries out second stage mixing, obtains the good mixture of mixing, thinned in roller machine；By roller machine
Uniformly mixed material, which is transmitted in pelletizer, to be granulated；Pellet after granulation is prepared by the multiplying power of setting and is injected through injection molding machine
It is formed in shoes mould；Molding sole is shaped into foamed profile finished product through insulating box.The patent is guaranteeing that foaming shoe material is physical
While energy, its lear energy is improved, but stable product quality is bad.
Chinese patent CN105385015A discloses a kind of ultralight EVA shoe bottom and preparation method thereof, is made of following raw material:
It is EVA, polyolefin block copolymer, PP elastomer, nucleating agent, foaming agent, crosslinking agent, zinc stearate, zinc oxide, stearic acid, resistance to
Grinding agent, nanometer calcium carbonate, pigment, preparation method include, raw material through mixing, begin to pratise, be granulated ultralight EVA shoe bottom, ultralight EVA is made
The density of sole is less than 0.1g/cm3, have the characteristics that ultralight, high-elastic, but the tear resistance at the standby EVA shoe bottom of the patent system
Bad, service life is shorter.
Therefore, it is necessary to a kind of lightweight, lear energies by force, stable product quality, and the simple EVA shoe ground of preparation method
Material and preparation method thereof.
Summary of the invention
The present invention is in view of the above-mentioned problems, provide a kind of light anti-tearing EVA shoe bottom material and preparation method thereof.
Technical solution used by the present invention solves the above problems is: a kind of light anti-tearing EVA shoe bottom material, and preparation is light
The raw material of matter tear-proof EVA shoe bottom material includes: 40 parts~60 parts of ethylene-vinyl acetate copolymer, regeneration rubber by its parts by weight
2 parts~6 parts of rubber powder, 3 parts~9 parts of liquid nitrile rubber, 1 part~5 parts of talcum powder, 0.5 part~2.5 parts of nm-class active calcium carbonate,
0.4 part~0.8 part of stearic acid, 1.2 parts~2.5 parts of modified zinc oxide whisker, 1.5 parts~3.0 parts of altax, foaming agent 2.5
Part~7.5 parts, 0.3 part~0.8 part of release agent.Wherein, regnerated rubber powder is regenerated rubber overshoes class rubber, and granularity is 80~100
Mesh, addition regnerated rubber powder can solve problem of environmental pollution, reduce the usage amount of raw rubber；Liquid nitrile rubber is low molecule liquid
The softening agent of body toughening, plasticizer and rubber, it is preferable with the intermiscibility of other polymers；ZnOw is four-needle-like zinc oxide
Whisker is a kind of strengthening and toughening agent of excellent in mechanical performance, can it is isotropic improve composite material performance, added
The tear resistance of product can be improved into the sole material of EVA；Nm-class active calcium carbonate will be received as enhancement additive
Rice calcium carbonate is added in sole material together with modified zinc oxide whisker after being activated, and can further improve tear-proof
Ability reduces morphotropism；Stearic acid is lubricating action, reduces the adhesion of material and equipment.
Further, the content of vinyl acetate is 22%~28% in ethylene-vinyl acetate copolymer.
Further, the preparation method of modified zinc oxide whisker includes:
Silane coupling reagent KH-570 is added in 85% ethyl alcohol of 6~12 times of volumes, adds acid-conditioning solution by step i
PH is 3~4, is placed 45 minutes~75 minutes；
Step ii, ZnOw is put into dehydrated alcohol, ultrasonic disperse 30 minutes~50 minutes, step i is added and obtains
The solution arrived water bath with thermostatic control 2 hours~4 hours, through suction filtration, washing, drying, obtains modified zinc oxide whisker.
Further, in step i, acid is selected from any one of hydrochloric acid, sulfuric acid, nitric acid.
Further, in step ii, the weight ratio of ZnOw and dehydrated alcohol is 1~2:1.
Further, foaming agent is blowing agent H and ammonium hydrogen carbonate with the mixture of weight ratio 1:1~3.
Further, preparing the raw material of light anti-tearing EVA shoe bottom material by its parts by weight includes: ethene-vinyl acetate
50 parts of copolymer, 6 parts of liquid nitrile rubber, 4 parts of regnerated rubber powder, 3 parts of talcum powder, 1.5 parts of nm-class active calcium carbonate, stearic acid
0.6 part, 1.8 parts of modified zinc oxide whisker, 2.2 parts of altax, 5 parts of foaming agent, 0.5 part of release agent.
Another goal of the invention of the invention is to provide a kind of preparation method of light anti-tearing EVA shoe bottom material, including
Following steps:
Step S10 is weighed the raw material for preparing light anti-tearing EVA shoe bottom material by above-mentioned parts by weight；
The talcum powder of above-mentioned parts by weight, nm-class active calcium carbonate, modified zinc oxide whisker are stirred by step S20, are mixed
The liquid nitrile rubber of above-mentioned parts by weight is added after closing uniformly, continues to stir evenly, obtains mixed material；
Step S30 puts into the ethylene-vinyl acetate copolymer of above-mentioned parts by weight, regnerated rubber powder in mixer, control
Temperature processed is 108 DEG C~115 DEG C, mixing 3 minutes~5 minutes, after the obtained mixed material of step S20 is added, mixing 3 minutes~
8 minutes, after the stearic acid of above-mentioned parts by weight, altax, foaming agent, release agent is added, after continuing mixing 25 seconds~45 seconds, warp
Calender is suppressed to obtain film；
The obtained film of step S30 is put into mold and carries out foaming processing, obtains light anti-tearing EVA shoe by step S40
Bottom material.Wherein, in step S20, liquid nitrile rubber and the intermiscibility of other high polymers are good, first that inorganic material is mixed
Afterwards, it is then added in EVA, the dispersing uniformity of inorganic material can be improved, stability of enhancing product performance.
Further, in step S20, the temperature being stirred is 25 DEG C~35 DEG C.
Further, in step S40,165 DEG C~175 DEG C of the temperature for processing of foaming.
The invention has the advantages that
1. EVA foaming sole material prepared by the present invention when modified to sole material, retain EVA foamed material it is light,
While comfort properties, the defect of EVA foamed material non-refractory, non-tear-proof is overcome, keeps consumer's dress more comfortable, makes
With longer life expectancy, more longlasting；
2. the present invention using EVA as primary raw material, is improved by the way that nm-class active calcium carbonate and modified zinc oxide whisker is added
The tear resistance of sole material first mixes inorganic component with liquid nitrile rubber in preparation process, improve inorganic component with
Compatibility between high polymer guarantees the quality stability of product；
3. the density of light anti-tearing EVA shoe bottom material prepared by the present invention is small, quality is light, tensile strength and tearing
Strength character is excellent, and the resilience performance of product is preferable, and deformation is less prone to after dress, increases service life, and the side of preparation
Method is simple, and preparation process is easy to operate, is suitble to large-scale production application.
Specific embodiment
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
Embodiment 1
A kind of light anti-tearing EVA shoe bottom material and preparation method thereof
The raw material for preparing light anti-tearing EVA shoe bottom material includes: ethylene-vinyl acetate copolymer 40kg, reclaimed rubber
Powder 5kg, liquid nitrile rubber 9kg, talcum powder 2kg, nm-class active calcium carbonate 0.5kg, stearic acid 0.7kg, modified zinc oxide are brilliant
It must 2.5kg, altax 1.5kg, foaming agent 3.5kg, release agent 0.7kg；Wherein, acetic acid in ethylene-vinyl acetate copolymer
The content of ethylene is 22%~28%, and foaming agent is blowing agent H and ammonium hydrogen carbonate with the mixture of weight ratio 1:1.
The preparation method of modified zinc oxide whisker includes:
Silane coupling reagent KH-570 is added in 85% ethyl alcohol of 6 times of volumes, adds the pH of hydrochloric acid conditioning solution by step i
It is 3~4, places 70 minutes；
Step ii, ZnOw is put into dehydrated alcohol, and the weight ratio of ZnOw and dehydrated alcohol is 1.2:
1, ultrasonic disperse 50 minutes, the solution that step i is obtained is added, water bath with thermostatic control 2.5 hours, through suction filtration, washing, drying, is changed
Property ZnOw.
Light anti-tearing EVA shoe bottom material, is prepared via a method which:
Step S10 is weighed the raw material for preparing light anti-tearing EVA shoe bottom material by above-mentioned parts by weight；
Step S20, by the talcum powder of above-mentioned parts by weight, nm-class active calcium carbonate, modified zinc oxide whisker, 35 DEG C of stirrings are mixed
It closes, the liquid nitrile rubber of above-mentioned parts by weight is added after mixing, continues to stir evenly, obtains mixed material；
Step S30 puts into the ethylene-vinyl acetate copolymer of above-mentioned parts by weight, regnerated rubber powder in mixer, control
Temperature processed is 108 DEG C, and mixing 5 minutes, after the mixed material that step S20 is obtained is added, mixing 4 minutes, above-mentioned parts by weight are added
Stearic acid, altax, foaming agent, after release agent, after continuing mixing 40 seconds, suppress to obtain film through calender；
The obtained film of step S30 is put into 165 DEG C of mold and carries out foaming processing, it is anti-tear to obtain lightweight by step S40
Split EVA shoe bottom material.
Embodiment 2
A kind of light anti-tearing EVA shoe bottom material and preparation method thereof
The raw material for preparing light anti-tearing EVA shoe bottom material includes: ethylene-vinyl acetate copolymer 45kg, reclaimed rubber
Powder 2kg, liquid nitrile rubber 4kg, talcum powder 4kg, nm-class active calcium carbonate 2.5kg, stearic acid 0.4kg, modified zinc oxide are brilliant
It must 1.5kg, altax 2.5kg, foaming agent 2.5kg, release agent 0.8kg；Wherein, acetic acid in ethylene-vinyl acetate copolymer
The content of ethylene is 22%~28%, and foaming agent is blowing agent H and ammonium hydrogen carbonate with the mixture of weight ratio 1:1.5.
The preparation method of modified zinc oxide whisker includes:
Silane coupling reagent KH-570 is added in 85% ethyl alcohol of 7 times of volumes, adds the pH of sulfuric acid regulation solution by step i
It is 3~4, places 50 minutes；
Step ii, ZnOw is put into dehydrated alcohol, and the weight ratio of ZnOw and dehydrated alcohol is 2:1,
Ultrasonic disperse 45 minutes, the solution that step i is obtained is added, water bath with thermostatic control 2.0 hours, through suction filtration, washing, drying, is modified
ZnOw.
Light anti-tearing EVA shoe bottom material, is prepared via a method which:
Step S10 is weighed the raw material for preparing light anti-tearing EVA shoe bottom material by above-mentioned parts by weight；
Step S20, by the talcum powder of above-mentioned parts by weight, nm-class active calcium carbonate, modified zinc oxide whisker, 32 DEG C of stirrings are mixed
It closes, the liquid nitrile rubber of above-mentioned parts by weight is added after mixing, continues to stir evenly, obtains mixed material；
Step S30 puts into the ethylene-vinyl acetate copolymer of above-mentioned parts by weight, regnerated rubber powder in mixer, control
Temperature processed is 110 DEG C, and mixing 3 minutes, after the mixed material that step S20 is obtained is added, mixing 8 minutes, above-mentioned parts by weight are added
Stearic acid, altax, foaming agent, after release agent, after continuing mixing 25 seconds, suppress to obtain film through calender；
The obtained film of step S30 is put into 168 DEG C of mold and carries out foaming processing, it is anti-tear to obtain lightweight by step S40
Split EVA shoe bottom material.
Embodiment 3
A kind of light anti-tearing EVA shoe bottom material and preparation method thereof
The raw material for preparing light anti-tearing EVA shoe bottom material includes: ethylene-vinyl acetate copolymer 55kg, reclaimed rubber
Powder 6kg, liquid nitrile rubber 3kg, talcum powder 5kg, nm-class active calcium carbonate 2.0kg, stearic acid 0.5kg, modified zinc oxide are brilliant
It must 1.2kg, altax 3kg, foaming agent 6.5kg, release agent 0.4kg；Wherein, acetic acid second in ethylene-vinyl acetate copolymer
The content of alkene is 22%~28%, and foaming agent is blowing agent H and ammonium hydrogen carbonate with the mixture of weight ratio 1:3.
The preparation method of modified zinc oxide whisker includes:
Silane coupling reagent KH-570 is added in 85% ethyl alcohol of 10 times of volumes, adds the pH of nitre acid-conditioning solution by step i
It is 3~4, places 45 minutes；
Step ii, ZnOw is put into dehydrated alcohol, and the weight ratio of ZnOw and dehydrated alcohol is 1.0:
1, ultrasonic disperse 35 minutes, the solution that step i is obtained is added, water bath with thermostatic control 4.0 hours, through suction filtration, washing, drying, is changed
Property ZnOw.
Light anti-tearing EVA shoe bottom material, is prepared via a method which:
Step S10 is weighed the raw material for preparing light anti-tearing EVA shoe bottom material by above-mentioned parts by weight；
Step S20, by the talcum powder of above-mentioned parts by weight, nm-class active calcium carbonate, modified zinc oxide whisker, 25 DEG C of stirrings are mixed
It closes, the liquid nitrile rubber of above-mentioned parts by weight is added after mixing, continues to stir evenly, obtains mixed material；
Step S30 puts into the ethylene-vinyl acetate copolymer of above-mentioned parts by weight, regnerated rubber powder in mixer, control
Temperature processed is 113 DEG C, and mixing 5 minutes, after the mixed material that step S20 is obtained is added, mixing 7 minutes, above-mentioned parts by weight are added
Stearic acid, altax, foaming agent, after release agent, after continuing mixing 45 seconds, suppress to obtain film through calender；
The obtained film of step S30 is put into 172 DEG C of mold and carries out foaming processing, it is anti-tear to obtain lightweight by step S40
Split EVA shoe bottom material.
Embodiment 4
A kind of light anti-tearing EVA shoe bottom material and preparation method thereof
The raw material for preparing light anti-tearing EVA shoe bottom material includes: ethylene-vinyl acetate copolymer 60kg, reclaimed rubber
Powder 3kg, liquid nitrile rubber 8kg, talcum powder 1kg, nm-class active calcium carbonate 1kg, stearic acid 0.8kg, modified zinc oxide whisker
2.0kg, altax 2.0kg, foaming agent 7.5kg, release agent 0.3kg；Wherein, acetic acid second in ethylene-vinyl acetate copolymer
The content of alkene is 22%~28%, and foaming agent is blowing agent H and ammonium hydrogen carbonate with the mixture of weight ratio 1:2.5.
The preparation method of modified zinc oxide whisker includes:
Silane coupling reagent KH-570 is added in 85% ethyl alcohol of 12 times of volumes, adds the pH of hydrochloric acid conditioning solution by step i
It is 3~4, places 75 minutes；
Step ii, ZnOw is put into dehydrated alcohol, and the weight ratio of ZnOw and dehydrated alcohol is 1.8:
1, ultrasonic disperse 30 minutes, the solution that step i is obtained is added, water bath with thermostatic control 3.5 hours, through suction filtration, washing, drying, is changed
Property ZnOw.
Light anti-tearing EVA shoe bottom material, is prepared via a method which:
Step S10 is weighed the raw material for preparing light anti-tearing EVA shoe bottom material by above-mentioned parts by weight；
Step S20, by the talcum powder of above-mentioned parts by weight, nm-class active calcium carbonate, modified zinc oxide whisker, 28 DEG C of stirrings are mixed
It closes, the liquid nitrile rubber of above-mentioned parts by weight is added after mixing, continues to stir evenly, obtains mixed material；
Step S30 puts into the ethylene-vinyl acetate copolymer of above-mentioned parts by weight, regnerated rubber powder in mixer, control
Temperature processed is 115 DEG C, and mixing 3 minutes, after the mixed material that step S20 is obtained is added, mixing 3 minutes, above-mentioned parts by weight are added
Stearic acid, altax, foaming agent, after release agent, after continuing mixing 30 seconds, suppress to obtain film through calender；
The obtained film of step S30 is put into 175 DEG C of mold and carries out foaming processing, it is anti-tear to obtain lightweight by step S40
Split EVA shoe bottom material.
Embodiment 5
A kind of light anti-tearing EVA shoe bottom material and preparation method thereof
The raw material for preparing light anti-tearing EVA shoe bottom material includes: ethylene-vinyl acetate copolymer 50kg, liquid butyronitrile
Rubber 6kg, regnerated rubber powder 4kg, talcum powder 3kg, nm-class active calcium carbonate 1.5kg, stearic acid 0.6kg, modified zinc oxide are brilliant
It must 1.8kg, altax 2.2kg, foaming agent 5kg, release agent 0.5kg；Wherein, acetic acid second in ethylene-vinyl acetate copolymer
The content of alkene is 22%~28%, and foaming agent is blowing agent H and ammonium hydrogen carbonate with the mixture of weight ratio 1:2.
The preparation method of modified zinc oxide whisker includes:
Silane coupling reagent KH-570 is added in 85% ethyl alcohol of 9 times of volumes, adds the pH of hydrochloric acid conditioning solution by step i
It is 3~4, places 60 minutes；
Step ii, ZnOw is put into dehydrated alcohol, and the weight ratio of ZnOw and dehydrated alcohol is 1.5:
1, ultrasonic disperse 40 minutes, the solution that step i is obtained is added, water bath with thermostatic control 3.0 hours, through suction filtration, washing, drying, is changed
Property ZnOw.
Light anti-tearing EVA shoe bottom material, is prepared via a method which:
Step S10 is weighed the raw material for preparing light anti-tearing EVA shoe bottom material by above-mentioned parts by weight；
Step S20, by the talcum powder of above-mentioned parts by weight, nm-class active calcium carbonate, modified zinc oxide whisker, 30 DEG C of stirrings are mixed
It closes, the liquid nitrile rubber of above-mentioned parts by weight is added after mixing, continues to stir evenly, obtains mixed material；
Step S30 puts into the ethylene-vinyl acetate copolymer of above-mentioned parts by weight, regnerated rubber powder in mixer, control
Temperature processed is 112 DEG C, and mixing 4 minutes, after the mixed material that step S20 is obtained is added, mixing 5 minutes, above-mentioned parts by weight are added
Stearic acid, altax, foaming agent, after release agent, after continuing mixing 35 seconds, suppress to obtain film through calender；
The obtained film of step S30 is put into 170 DEG C of mold and carries out foaming processing, it is anti-tear to obtain lightweight by step S40
Split EVA shoe bottom material.
Comparative example
A kind of light anti-tearing EVA shoe bottom material and preparation method thereof
The raw material for preparing light anti-tearing EVA shoe bottom material includes: ethylene-vinyl acetate copolymer 50kg, liquid butyronitrile
Rubber 6kg, regnerated rubber powder 4kg, talcum powder 3kg, nm-class active calcium carbonate 1.5kg, stearic acid 0.6kg, promotor
DM2.2kg, foaming agent 5kg, release agent 0.5kg；Wherein, the content of vinyl acetate is 22% in ethylene-vinyl acetate copolymer
~28%, foaming agent is blowing agent H and ammonium hydrogen carbonate with the mixture of weight ratio 1:2.
Light anti-tearing EVA shoe bottom material, is prepared via a method which:
Step S10 is weighed the raw material for preparing light anti-tearing EVA shoe bottom material by above-mentioned parts by weight；
Step S20, by the talcum powder of above-mentioned parts by weight, nm-class active calcium carbonate, 30 DEG C are stirred, after mixing plus
The liquid nitrile rubber for entering above-mentioned parts by weight continues to stir evenly, obtains mixed material；
Step S30 puts into the ethylene-vinyl acetate copolymer of above-mentioned parts by weight, regnerated rubber powder in mixer, control
Temperature processed is 112 DEG C, and mixing 4 minutes, after the mixed material that step S20 is obtained is added, mixing 5 minutes, above-mentioned parts by weight are added
Stearic acid, altax, foaming agent, after release agent, after continuing mixing 35 seconds, suppress to obtain film through calender；
The obtained film of step S30 is put into 170 DEG C of mold and carries out foaming processing, it is anti-tear to obtain lightweight by step S40
Split EVA shoe bottom material.
Experimental example
Technical progress in order to further illustrate the present invention is now further illustrated using experiment.
Under square one, performance survey is carried out to the light anti-tearing EVA shoe bottom material produced of the embodiment of the present invention 1~5
Examination, the results are shown in Table 1.
The test result of 1. Examples 1 to 5 of table preparation
Experimental result shows that the density of light anti-tearing EVA shoe bottom material prepared by the embodiment of the present invention 1~5 is lower, only
For 0.17g/cm3~0.21g/cm3, for tensile strength up to 3.8MPa or more, tearing strength is greater than 6.9N/mm, and resilience is only
38%~47%.
It follows that the density of EVA shoe bottom material prepared by the present invention is small, quality is light, tensile strength and tearing strength
It has excellent performance, the resilience performance of product is preferable, and deformation is less prone to after dress, increases service life.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of light anti-tearing EVA shoe bottom material, which is characterized in that prepare the original of the light anti-tearing EVA shoe bottom material
Material includes: 40 parts~60 parts of ethylene-vinyl acetate copolymer, 2 parts~6 parts of regnerated rubber powder, liquid butyronitrile rubber by its parts by weight
3 parts~9 parts of glue, 0.5 part~2.5 parts of nm-class active calcium carbonate, 0.4 part~0.8 part of stearic acid, is modified 1 part~5 parts of talcum powder
1.2 parts~2.5 parts of ZnOw, 1.5 parts~3.0 parts of altax, 2.5 parts~7.5 parts of foaming agent, 0.3 part of release agent~
0.8 part.
2. light anti-tearing EVA shoe bottom material according to claim 1, which is characterized in that the ethene-vinyl acetate is total
The content of vinyl acetate is 22%~28% in polymers.
3. light anti-tearing EVA shoe bottom material according to claim 1, which is characterized in that the modified zinc oxide whisker
Preparation method include:
Silane coupling reagent KH-570 is added in 85% ethyl alcohol of 6~12 times of volumes by step i, and adding the pH of acid-conditioning solution is 3
~4, it places 45 minutes~75 minutes；
Step ii, ZnOw is put into dehydrated alcohol, ultrasonic disperse 30 minutes~50 minutes, is added what step i was obtained
Solution water bath with thermostatic control 2 hours~4 hours, through suction filtration, washing, drying, obtains modified zinc oxide whisker.
4. light anti-tearing EVA shoe bottom material according to claim 3, which is characterized in that in step i, the acid is selected from
Any one of hydrochloric acid, sulfuric acid, nitric acid.
5. light anti-tearing EVA shoe bottom material according to claim 3, which is characterized in that in step ii, the zinc oxide
The weight ratio of whisker and dehydrated alcohol is 1~2:1.
6. light anti-tearing EVA shoe bottom material according to claim 1, which is characterized in that the foaming agent is blowing agent H
With ammonium hydrogen carbonate with the mixture of weight ratio 1:1~3.
7. light anti-tearing EVA shoe bottom material according to claim 1, which is characterized in that prepare the light anti-tearing
The raw material of EVA shoe bottom material includes: 50 parts of ethylene-vinyl acetate copolymer, 6 parts of liquid nitrile rubber, regeneration by its parts by weight
4 parts of rubber powder, 1.5 parts of nm-class active calcium carbonate, 0.6 part of stearic acid, 1.8 parts of modified zinc oxide whisker, promotes 3 parts of talcum powder
DM2.2 parts of agent, 5 parts of foaming agent, 0.5 part of release agent.
8. a kind of preparation method of light anti-tearing EVA shoe bottom material according to any one of claims 1 to 7, special
Sign is, comprising the following steps:
Step S10 is weighed the raw material for preparing light anti-tearing EVA shoe bottom material by the parts by weight；
The talcum powder of the parts by weight, nm-class active calcium carbonate, modified zinc oxide whisker are stirred by step S20, and mixing is equal
The liquid nitrile rubber of the parts by weight is added after even, continues to stir evenly, obtains mixed material；
Step S30 puts into the ethylene-vinyl acetate copolymer of the parts by weight, regnerated rubber powder in mixer, control temperature
Degree is 108 DEG C~115 DEG C, mixing 3 minutes~5 minutes, after the obtained mixed material of step S20 is added, and 3 minutes~8 points of mixing
Clock, after the stearic acid of the parts by weight, altax, foaming agent, release agent is added, after continuing mixing 25 seconds~45 seconds, through pressing
Prolong machine to suppress to obtain film；
The obtained film of step S30 is put into mold and carries out foaming processing by step S40, obtains light anti-tearing EVA shoe ground
Material.
9. preparation method according to claim 8, which is characterized in that in step S20, the temperature being stirred is 25
DEG C~35 DEG C.
10. preparation method according to claim 8, which is characterized in that in step S40, the temperature 165 of the foaming processing
DEG C~175 DEG C.
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| CN113698658A (en) * | 2021-09-22 | 2021-11-26 | 莆田市涵江怡丰鞋业有限公司 | Anti-crack sole based on EVA material and preparation method thereof |
| CN115181355A (en) * | 2022-06-27 | 2022-10-14 | 茂泰(福建)鞋材有限公司 | Anti-slip tear-resistant EVA (ethylene vinyl acetate) foamed sole and preparation method thereof |
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