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Lightweight high-elasticity EVA shoe sole and preparation method thereof

A high-elasticity and light-weight technology, used in shoe soles, footwear, applications, etc., can solve the problems of easy wrinkling on the product surface, expensive raw materials, and high surface crystallization rate, and achieve poor dimensional stability and good dimensional stability. The effect of high crystallization temperature

Active Publication Date: 2015-07-29
MAOTAI FUJIAN SOLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with EVA, polyolefin block copolymer has increased elasticity, higher heat resistance, improved compression set, light weight, and less sensory stimulation, but it also has the same defects as EVA: high surface crystallization rate, and skin is easy to wrinkle And other issues
The patents CN 103992609 A and CN 103992610 A of Quanzhou Sansheng Rubber and Plastic Foaming Shoe Material Co., Ltd. disclose olefin block copolymer foaming materials and their preparation methods, which have high flexibility, good heat resistance, elastic recovery and Foam materials with excellent compression deformation properties, etc., but this foam material is not suitable for shoe materials, because the polarity of olefin block copolymers is small, it is difficult to bond with shoe uppers and shoe accessories, which brings great pressure to the shoe molding process. Difficult; expensive raw materials, high production costs; poor grip; easy to wrinkle the product surface, affecting the appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In this embodiment, the lightweight high-elastic EVA sole is composed of the following components in parts by weight:

[0048] EVA 40W 18 copies

[0049] EVA 265 22 copies

[0050] Polyolefin block copolymer 9077 33 parts

[0051] EPDM 3745P 10 parts

[0052] Chlorinated polyethylene 135B 6 parts

[0053] Blowing agent AC 2.5 parts

[0054] Crosslinking agent BIBP 1.7 parts

[0055] 2.2 parts of zinc stearate

[0056] Stearic acid 1.2 parts

[0057] Anti-wear agent AG209 2 parts

[0058] 5 parts of talcum powder.

[0059] The preparation method of the lightweight and high-elastic EVA sole includes the steps:

[0060] Step 1: Prepare light-weight and high-elastic EVA rice, first mix all the ingredients for banburying, adjust the banburying temperature to 97℃, keep it for 6min, then turn the material twice, continue the banburying and increase the temperature, the output temperature is 106 ℃, after the banburying is completed, open smelting and granulation are carried out to obtain lightw...

Embodiment 2

[0064] In this example, the preparation method of a lightweight high-elastic EVA sole is the same as the preparation method in Example 1, except that the raw material ratio is:

[0065] 30 parts of EVA 40W, 10 parts of EVA 7470M, 25 parts of polyolefin block copolymer 9077, 1.4 parts of crosslinking agent BIBP, and 3 parts of anti-wear agent AG209.

[0066] The light-weight high-elastic EVA sole prepared above, with a density of 0.17g / cm 3 , Hardness 36, DIN wear resistance 228mm 3 , Size shrinkage 1.4%, rebound rate 59%, compression deformation rate 34%, tear strength 4.0 N / mm, tensile strength 1.9 MPa, dynamic anti-slip coefficient smooth dry type 0.62 wet type 0.48, static anti-slip coefficient dry type 0.51 Wet 0.40.

Embodiment 3

[0068] In this example, the preparation method of a lightweight high-elastic EVA sole is the same as the preparation method in Example 1, except that the raw material ratio is:

[0069] EVA 265 40 parts, polyolefin block copolymer 9077 35 parts, EPDM 3745P 12 parts, chlorinated polyethylene 135B 5 parts, crosslinking agent BIBP 1.8 parts, talc 4 parts.

[0070] The light-weight and high-elastic EVA sole prepared above, with a density of 0.18g / cm 3 , Hardness 43, DIN wear resistance 267mm 3 , Size shrinkage 0.6%, rebound rate 54%, compression deformation rate 29%, tear strength 5.8 N / mm, tensile strength 2.3 MPa, dynamic anti-slip coefficient smooth dry type 0.57 wet type 0.42, static anti-slip coefficient dry type 0.48 Wet type 0.39.

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Abstract

The invention relates to the technical field of high-molecular compounds, and provides a lightweight high-elasticity EVA shoe sole and a preparation method thereof. The lightweight high-elasticity EVA shoe sole is prepared by the steps of performing internal mixing, open milling and pelleting on the materials of EVA, polyolefin segmented copolymer, ethylene propylene diene monomer, chlorinated polyethylene, a foaming agent, a cross-linking agent, zinc stearate, stearic acid, an abrasion-resistant agent and talcum powder, so as to obtain lightweight high-elasticity pellets, and performing injection molding at one time to obtain the lightweight high-elasticity EVA shoe sole. The lightweight high-elasticity EVA shoe sole provided by the invention has the characteristics that the resilience is high, the dimensional stability is high, the compression deformation rate is low, the surface is not easy to wrinkle, the weight is light, the comprehensive performance is good, the product percent of pass is high, and in addition, the EVA shoe sole is lighter in weight and is particularly suitable for production of top-grade EVA sport shoes and casual shoes.

Description

Technical field [0001] The invention belongs to the technical field of organic polymer compounds, and particularly relates to a lightweight and highly elastic EVA sole and a preparation method thereof. Background technique [0002] Shoes are a necessities of life that everyone can't do without. For the sake of comfort, people are more willing to choose lighter shoes and boots in life. For people who love sports, lightweight shoes, keeping their functionality unchanged, will consume less energy for the wearer, and improve their sports performance and wearing comfort. The process of lightweighting may only reduce a few grams or ten grams, which may seem insignificant. For athletes, especially football players, weight can be equal to speed, which will bring huge changes to athletes. [0003] The hard and soft segments in the molecular chain of the polyolefin block copolymer are alternately arranged, and the frequency of the alternating arrangement is fixed, and the molecular length i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L53/00C08L23/16C08L23/28C08K13/02C08K5/098C08K5/09C08K3/34C08K5/14A43B13/04C08J9/10
CPCA43B13/04C08J9/103C08J2203/04C08J2323/08C08J2353/00C08J2423/08C08J2423/16C08J2423/28C08J2453/00C08L23/0853C08L53/00C08L2201/08C08L2203/14C08L2205/025C08L2205/03C08L2205/035C08L2205/06C08L23/16C08L23/286C08K13/02C08K5/098C08K5/09C08K3/34C08K5/14
Inventor 卢鑫丁思博罗显发廖毅彬郭彩莲周小兰林荷香林江金校红郑荣大
Owner MAOTAI FUJIAN SOLES CO LTD
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