EVA foam material and preparation method thereof

A technology of foaming materials and raw materials, which is applied in the field of EVA foaming materials and its preparation, can solve the problems of irritation, poor wear resistance, and not easy to degrade, etc., and achieve excellent wear resistance, rebound performance and stretching Increased strength and improved usability

Pending Publication Date: 2020-12-01
福建省新德新鞋业有限责任公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing EVA foam material has the following disadvantages: the first, poor wear resistance, poor elasticity and not easy to degrade; second, after the decomposition of AC foaming agent, it is NH2, CO, C, N, H, O, and then Reconstitute new substances respectively, among which N, H, C, and O will form HCONH2, which is formamide. Formamide is a low-toxic compound that can be absorbed into the body through the respiratory tract, digestive tract, skin and mucous membranes, and The metabolic rate is relatively low, irritating, and has certain reproductive toxicity. Belgium and the European Union have relevant laws to prohibit the sale of floor mats containing formamide
Although there are products that can replace AC foaming agents on the market, many indicators of the properties of the products cannot be compared with the foaming products produced by the existing AC foaming agents. Therefore, how to remove formamide has become an important issue. The problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • EVA foam material and preparation method thereof
  • EVA foam material and preparation method thereof
  • EVA foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]

[0025] Preparation method: S1. After mixing EVA, low-density polyethylene, rubber, degradable organic matter, plant flower powder and calcium carbonate evenly, extrude through a twin-screw extruder, the extrusion temperature is 150-220 degrees Celsius, and the extrusion time is for 3-5min, and then granulated to obtain granule A;

[0026] S2. After mixing the granular matter A, AC foaming agent, zinc oxide and zinc stearate evenly, enter the internal mixer for mixing. Nitrogen is used as the protective gas inside the internal mixer, and the mixing temperature is 120-140 degrees Celsius. The hydrogen flow rate is 1.9-2.8m 3 / h, the interior of the internal mixer is in a slight negative pressure state, and then granulated to obtain granules B;

[0027] S3. The finished product is obtained after the particles B are injected by the EVA injection machine, vulcanized, and foamed outside the mold.

Embodiment 2

[0029]

[0030] Preparation method: with embodiment 1.

[0031]

[0032] Preparation method: with embodiment 1.

[0033]

[0034]

[0035] Preparation method: with embodiment 1.

[0036]

[0037] Preparation method: with embodiment 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of EVA foam materials, and especially relates to an EVA foam material and a preparation method thereof. The wear resistance, elasticity and degradation capacity of the EVA foam material are improved and the practicability is improved. The EVA foam material is prepared from, by weight, 50-100 parts of EVA, 20-30 parts of low-density polyethylene, 20-30 parts of rubber, 5-10 parts of an AC foaming agent, 10-20 parts of degradable organic matter, 2-5 parts of zinc oxide, 3-7 parts of plant pollen powder, 1-5 parts of zinc stearate and 3-7 parts of calcium carbonate.

Description

technical field [0001] The invention relates to the technical field of EVA foam materials, in particular to an EVA foam material and a preparation method thereof. Background technique [0002] As we all know, EVA is an ethylene-vinyl acetate (vinyl acetate) copolymer, which is prepared by copolymerization of ethylene (English name is Ethylene) and vinyl acetate (English name is VinylAcetate). EVA, or E / VAC, wherein the content of vinyl acetate is generally 5%-40%. Because of its low cost, and compared with low-density polyethylene, because EVA introduces vinyl acetate monomer into the molecular chain, which reduces the crystallinity, improves flexibility, impact resistance, filler compatibility and heat sealing performance, Therefore, it is widely used in the shoe industry, building materials industry, luggage industry and toy industry and other fields. EVA foam material has good plasticity, elasticity and processability, and the foamed material has the advantages of low d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L23/08C08L23/06C08L21/00C08L97/02C08L3/02C08K13/02C08K5/098C08K3/22C08K3/26C08J9/10
CPCC08J9/103C08J9/0066C08J9/0061C08J9/0095C08J9/0023C08J2323/08C08J2423/06C08J2421/00C08J2497/02C08J2403/02C08J2203/04
Inventor 张明旺
Owner 福建省新德新鞋业有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap