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Ultralight EVA composite foaming material and preparation method thereof

A composite foaming and foaming agent technology, which is applied in the field of ultra-light EVA composite foaming materials and its preparation, can solve the problems affecting the wearing experience and appearance of shoes, the loss of elasticity of the soles, and the tendency to collapse, and achieves good user experience. Good softness and comfort, the effect of reducing crystallinity

Inactive Publication Date: 2018-05-18
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN 201510952164.9 discloses an ultra-light EVA sole and its preparation method, using PP elastomer and EVA composite foam to prepare a density of 0.1g / cm 3 foam material, but the compression deformation rate is close to 50%, and the fatigue resistance is poor. After wearing for a period of time, it is prone to collapse and poor recovery. At the same time, the sole quickly loses elasticity and has poor cushioning performance, which seriously affects the wearing experience and Exterior

Method used

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  • Ultralight EVA composite foaming material and preparation method thereof

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Embodiment 1

[0025] An ultra-light EVA composite foam material, in parts by mass, including 42 parts of ethylene-vinyl acetate copolymer, 30 parts of polyolefin block copolymer, 17 parts of PP elastomer, 13 parts of PS elastomer, 5 parts of filler part, 0.5 part of activator, 1 part of crosslinking agent, 3.1 parts of foaming agent; 3.1 parts of auxiliary agents, 2 parts of zinc oxide, 1 part of zinc stearate and 0.1 part of crosslinking auxiliary agent are used.

[0026] Wherein, the model of ethylene-vinyl acetate copolymer is one or more of EVA7470M, EVA460, EVA462, EVA265, EVA40L-03, EVA40W, preferably EVA7470M in this embodiment; the model of polyolefin block copolymer is Infuse9100, One or more of Infuse9107, Infuse9500, and Infuse9507, Infuse9107 is preferred in this embodiment; the PP elastomer is an ethylene-propylene rubber copolymer, and the melting point of the ethylene-propylene rubber copolymer is 65-85°C; the bending strength of the PS elastomer is 18-36MPa, tensile strength...

Embodiment 2

[0032] An ultra-light EVA composite foam material, in parts by mass, including 50 parts of ethylene-vinyl acetate copolymer, 25 parts of polyolefin block copolymer, 20 parts of PP elastomer, 15 parts of PS elastomer, and 5 parts of filler parts, 0.5 parts of active agent, 1.2 parts of crosslinking agent, 3 parts of foaming agent, 2.97 parts of auxiliary agent, 2 parts of zinc oxide, 0.8 part of zinc stearate, and 0.17 part of crosslinking auxiliary agent.

[0033] Wherein, the ethylene-vinyl acetate copolymer model is one or more of EVA7470M, EVA460, EVA462, EVA265, EVA40L-03, EVA40W, and the preferred models of ethylene-vinyl acetate copolymer in the present embodiment are EVA265 and EVA40W, And the ratio of parts by weight of EVA265 and EVA40W is 2:1; the type of polyolefin block copolymer is one or more of Infuse9100, Infuse9107, Infuse9500, Infuse9507, Infuse9107 is preferred in this embodiment; PP elastomer is B Propylene rubber copolymer, and the melting point of ethylen...

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Abstract

The invention discloses an ultralight EVA composite foaming material. The ultralight EVA composite foaming material is prepared from, by mass, 35-50 parts of ethylene-vinyl acetate copolymer, 15-35 parts of polyolefin block copolymer, 10-20 parts of PP elastomer, 10-15 parts of PS elastomer, 4-6 parts of fillers, 0.3-1 part of active agent, 0.7-1.2 parts of crosslinking agents, 2.5-3.5 parts of foaming agents and 2-5 parts of additives. The invention also provides a preparation method of the ultralight EVA composite foaming material above. According to the technical scheme, the ultralight EVAcomposite foamed material prepared by the method is lightweight and highly resilient, and has great compression resistance, great recovery performance, a simple preparation method process and wide applicability.

Description

technical field [0001] The invention relates to a composite foam rubber formula, in particular to an ultra-light EVA composite foam material and a preparation method thereof. Background technique [0002] With the rapid development of the sports shoes market, people have higher and higher requirements for the wearing experience of the soles, and lightweight is the main development trend. Chinese patent CN 201510952164.9 discloses an ultra-light EVA sole and its preparation method, using PP elastomer and EVA composite foam to prepare a density of 0.1g / cm 3 foam material, but the compression deformation rate is close to 50%, and the fatigue resistance is poor. After wearing for a period of time, it is prone to collapse and poor recovery. At the same time, the sole quickly loses elasticity and has poor cushioning performance, which seriously affects the wearing experience and Exterior. Therefore, existing EVA composite foaming material still needs further improvement, and thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L53/00C08L23/16C08L25/06C08K13/02C08K5/098C08K3/22C08K5/14C08J9/10
CPCC08J9/0023C08J9/0061C08J9/0066C08J9/0095C08J9/103C08J9/105C08J2203/04C08J2203/18C08J2325/08C08J2423/16C08J2425/06C08J2453/00
Inventor 王有承陈绍猛刘超刘成
Owner ANTA CHINA
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