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A kind of high wear-resistant EVA foam material and preparation method thereof

A foam material, high wear-resistant technology, applied in the field of high wear-resistant EVA foam materials and equipment, can solve the problem of negative fit between upper surface and rubber outsole, poor dispersion of silicone polymer, and affect EVA soles Appearance and other issues, to meet the effect of anti-slip performance and fit with rubber outsole, low heat shrinkage, and improve service life and function

Active Publication Date: 2022-03-15
QUANZHOU NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above technology achieves wear resistance by adding a large amount of silicone polymer, however, in order to obtain high wear resistance, the amount of silicone polymer added often needs to be higher than 2%, which often causes EVA material to be injected due to silicone polymerization. The phenomenon of flow marks caused by poor material dispersibility, which in turn affects the appearance of EVA soles; The fit of the bottom also has a great negative effect

Method used

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  • A kind of high wear-resistant EVA foam material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] 1. Composition of high wear-resistant EVA foam material

[0032] 47 parts of EVA with a VA content of 16%, 20 parts of SEBS, 10 parts of naphthenic oil, 1 part of glycidyl methacrylate grafted POE, 3 parts of organically modified montmorillonite modified by dioctadecyl ammonium, 1.5 parts of silicone oil with a molecular weight of 600,000, 9 parts of talc, 1.2 parts of bis-tert-butylperoxycumene, 2.0 parts of azodicarbonamide, 1.3 parts of triallyl isocyanurate, and 1.8 parts of zinc oxide , 0.5 parts of stearic acid and 1.7 parts of toner.

[0033] 2. Preparation of high wear-resistant EVA foam material

[0034] (1) After mixing 10 parts of naphthenic oil and 3 parts of organically modified montmorillonite modified by dioctadecyl ammonium evenly, the treatment times is 2 times, the treatment pressure is 206MPa and the treatment flow rate is 200ml / min. After being dispersed by a high-pressure micro-jet homogenizer, the organically modified montmorillonite dispersion i...

Embodiment 2

[0067] 1. Composition of high wear-resistant EVA foam material

[0068] 75 parts of EVA with a VA content of 50%, 5 parts of SBS, 15 parts of naphthenic oil, 0.5 part of glycidyl methacrylate grafted EVA, 0.1 part of organically modified montmorillonite modified by cetyl ammonium, 0.4 parts of silicone oil with a molecular weight of 1 million, 0.4 parts of dicumyl peroxide, 0.6 parts of N,N'-dinitrosopentamethylenetetramine, 1.0 parts of triallyl isocyanurate, 0.6 parts of zinc carbonate part, 1.4 parts of zinc stearate.

[0069] 2. Preparation of high wear-resistant EVA foam material

[0070] (1) After mixing 15 parts of naphthenic oil and 0.1 part of cetyl ammonium-modified organically modified montmorillonite, under the conditions of 1 treatment time, a treatment pressure of 20 MPa and a treatment flow rate of 30 ml / min , after being dispersed by a high-pressure micro-jet homogenizer, an organically modified montmorillonite dispersion is obtained;

[0071] (2) After step...

Embodiment 3

[0075] 1. Composition of high wear-resistant EVA foam material

[0076] 30 parts of EVA with 1% VA content, 35 parts of EVA with 50% EVA content, 5.5 parts of SIS, 3 parts of naphthenic oil, 5 parts of glycidyl methacrylate grafted SEBS, dicetyl ammonium modified 5 parts of organically modified montmorillonite, 1.0 part of silicone oil with a molecular weight of 1 million, 10 parts of calcium carbonate, 1.0 part of 2,5-dimethyl-2,5-bis(tert-butyl peroxide) hexane, hydrogen carbonate 1.5 parts of sodium, 1.5 parts of zinc oxide, and 1.5 parts of zinc stearate.

[0077] 2. Preparation of high wear resistance EVA foam material

[0078] (1) After mixing 3 parts of naphthenic oil and 5 parts of organically modified montmorillonite modified by dihexadecyl ammonium, after the number of treatments is 20 times, the treatment pressure is 100MPa and the treatment flow rate is 300ml / min After being dispersed by a high-pressure micro-jet homogenizer, the organically modified montmorillon...

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Abstract

The invention discloses a high wear-resistant EVA foam material and a preparation method thereof. The foam material comprises the following components in parts by weight: 40-75 parts of EVA, 5-40 parts of styrene thermoplastic elastomer, and 0.5-10 parts of container agent, 3-0 parts of naphthenic oil, 0.1-5 parts of organically modified montmorillonite, 0.2-5 parts of anti-wear agent, 0-20 parts of filler, 0.4-1.2 parts of bridging agent, 0.6-2.0 parts of foaming agent, 0-2 parts of auxiliary crosslinking agent, 0.6-2.0 parts of foam accelerator, 0-1.5 parts of lubricant and 0-10 parts of toner. The invention also discloses the preparation method of the high wear-resistant EVA foam material. The obtained organic montmorillonite modified EVA foam material can ensure the fit between the EVA midsole and the rubber outsole, and has high Wear-resistant and excellent anti-slip performance, a balance between wear-resistant and anti-slip properties has been achieved, which significantly improves the service life and function of EVA foam products.

Description

technical field [0001] The invention relates to the technical field of polymer material foaming, in particular to a highly wear-resistant EVA foaming material and a preparation method thereof. Background technique [0002] EVA is an ethylene-vinyl acetate (vinyl acetate) copolymer, which is obtained by copolymerization of ethylene (English name is Ethylene) and vinyl acetate (English name is Vinyl Acetate). The English name is Ethylene VinylAcetate, referred to as EVA , or E / VAC, wherein the content of vinyl acetate is generally 5%-40%. Because of its low cost, and compared with 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, so it is favored. Widely used in shoe industry, building materials industry, luggage industry and toy industry and other fields. [0003] EVA foam material has good plasticity, elasticity and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L53/02C08L83/04C08L51/06C08L51/00C08L91/00C08K13/06C08K9/04C08K3/34C08J9/10C08J9/08
CPCC08J9/009C08J9/0061C08J9/103C08J9/107C08J9/08C08J9/0095C08J2323/08C08J2453/02C08J2483/04C08J2451/06C08J2491/00C08J2203/04C08J2203/02C08J2451/00
Inventor 卓东贤陆猷良瞿波陈少云王睿
Owner QUANZHOU NORMAL UNIV
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