Wear-resistant rubber particle capable of being formed by injection molding, preparation method and application thereof

Abstract

The invention discloses a wear-resistant rubber particle capable of being formed by injection molding, a preparation method and application thereof, wherein the rubber particle comprises, by mass, 100parts of ethylene propylene diene monomer, 20-40 parts of an olefin block copolymer, 10-30 parts of a polyolefin elastomer, 15-45 parts of a reinforcing agent, 5-50 parts of a softening plasticizer,5-15 parts of an anti-wear agent, 1-4 parts of a vulcanizing agent, 1-2 parts of an auxiliary vulcanizing agent, 1-3 parts of stearic acid, 1-3 parts of zinc stearate, 2-10 parts of zinc oxide or zinccarbonate, 1-5 parts of an organic activator, 0.1-0.5 part of a coupling agent and 0-5 parts of color master batch. According to the invention, injection molding can be realized; the wear-resistant rubber particle can be used for manufacturing outsoles of sneakers or casual shoes, and various properties of the manufactured outsoles are obviously superior to the requirements of high-quality standards of the sneakers; and the wear-resistant rubber particle has the advantages of super wear resistance, high skid resistance, high elasticity, yellowing resistance, aging resistance, high and low temperature resistance, light weight and the like, particularly can achieve outsole manufacturing of complex three-dimensional structures, is low in material loss and high in yield.

Description

technical field [0001] The invention relates to a rubber material and its preparation method and application, in particular to an injection-castable and wear-resistant rubber particle, its preparation method and application, and belongs to the technical field of polymer materials. Background technique [0002] Injection molding is a high-tech developed by Dow Chemical Co. in the United States, and it is a mature molding process in industrially developed countries. The principle of injection molding is to suck semi-solid pellets into the material tube, and then make them produce thixotropy through the high-speed operation of the screw while heating, and fill the mold in a laminar flow during injection, thus forming various This molding process has many advantages, such as: the obtained product has high surface quality, good compactness, low defective product rate, low material loss, simple operation, and can be formed into products containing complex three-dimensional structu...

AI Technical Summary

Problems solved by technology

And present sports shoes can be divided into three kinds by sole: the first kind is the sole that is formed by single-layer foam body, has light weight advantage, but the thicker part of the sole is not conducive to sports, and anti-skid, wear-resisting performance is relatively poor; The second type is a sole composed of a foam body and multiple rubber sheets pasted on the bottom of the foam body. Compared with the first type, this type of sole has a certain anti-slip and wear-resistant effect, but the independent rubber sheet is prone to partial Shedding; the third type is the upper and lower layers of soles composed of foam and rubber sheet outsole. Compared with the second type, this type of sole has good performance in various physical properties, but it is not good in wear resistance. There are still some deficiencies in anti-skid and elasticity, so that the soles of sports shoes will quickly wear, slip, and lose elasticity during running and repeated jumping; the key is that the rubber materials currently used to make outsoles are mainly natural rubber. (NR), styrene-butadiene rubber (SBR) and butadiene rubber (BR), due to their own viscosity, cold flow, self-flowing properties, they can only be formed by molding, and the molded products have flashes and The burr requires additional trimming, which not only causes a huge waste of rubber (the loss rate reaches 15-30%), but also increases the cost, and increases the intensity of manual work, so that the yield rate cannot be guaranteed; The outsole with a hollowed-out structure also needs the assistance of padding, which not only results in more consumables and operating procedures, but also significantly increases the cost; especially, the use of compression molding technology cannot realize the production of outsoles with complex three-dimensional configurations, which limits the movement. The further improvement of shoe quality cannot meet the high demand of people

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