A kind of double-hardness physical fitness test shoe rubber base material and preparation method thereof

Abstract

The invention discloses a double-hardness physical fitness test shoe rubber base material and a preparation method thereof. The base material includes a high-hardness rubber material and a low-hardness rubber material, the low-hardness rubber material has a hardness of 30-40A, and the high-hardness rubber material has a hardness of 50-60A; by weight, the low-hardness rubber material includes the following components: 60-80 parts of natural rubber, 20-40 parts of butadiene rubber, 5-10 parts of polyurethane microporous elastomer, 1-3 parts of polyolefin elastomer, 10-20 parts of white carbon black, 4-5 parts of white carbon black active agent 1-3 parts of sulfur, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 1.1-3 parts of accelerator, 1-3 parts of anti-aging agent, 5-10 parts of naphthenic oil, 2-3 parts of coupling agent 5 parts, coumarone resin 2 to 4 parts. The dual-hardness physical fitness testing shoes of the present invention have a light rubber base material, good strength and wear resistance, and the double hardness materials are closely combined and are not easy to break, and are especially suitable for processing and manufacturing physical fitness testing shoes.

Description

Technical field [0001] The present invention relates to the field of rubber substrate, and more particularly to a physical fitness test shoe rubber substrate and a preparation method thereof, in particular, to a physical test shoe rubber substrate and a preparation method thereof. Background technique [0002] Physical energy testing refers to the measurement of humanity. Physique, is the material foundation of human life activities and labor, work ability. For different people's physical fitness test, most of the test projects contain test projects, so the physical test shoes that use a pair of light stops, disconnect strength, breaking elongation, abrasion resistance performance, good abrasion resistance . [0003] China is currently the world's largest footwear production country and exporting country. The main material of the sole has rubber, Pu, PVC, MD, TPR, TPU, EVA, etc., rubber sole due to its non-slip, high elasticity, wear resistance, not easy The advantages of breakin...

AI Technical Summary

Problems solved by technology

[0003] China is currently the world's largest producer and exporter of footwear. The main materials for shoe soles are rubber, PU, ​​PVC, MD, TPR, TPU, EVA, etc. Rubber soles are not easy to slip due to their anti-slip, high elasticity, and good wear resistance. The advantages of fracture, good elongation, and stable shrinkage can be said to occupy half of the footwear products. At present, most of the finished shoes of domestic first-line brands use rubber soles, but the disadvantage of rubber soles is that they use low-cost formula products. Physical properties are unsatisfactory; if you want to make a high-quality sole, the cost of the rubber formula used is generally high

[0004] The wear resistance of the sole of the same material is balanced, but in the process of people wearing shoes in daily life, the wear intensity of different positions of the sole is not balanced, and the wear intensity is the largest at the position of the rear end of the sole slightly on the left and right sides ( That is, the back support of the sole), there is little difference in the wear strength of other positions except the center of the foot. The problem brought about by this phenomenon is that during the wearing process of the shoes, other parts of the sole are intact, and the back support will soon form a loss, resulting in the wear of the entire shoe. Deviated and deformed, scrapped ahead of time

[0005] In the prior art, there are two methods for making soles with a combination of hardness. The main method is to use low-density materials for the forefoot and high-hardness materials for the heel. However, the oxidation resistance of the two materials is different, resulting in a combination of the two hardnesses. There are obvious marks on the part, and there is a risk of disconnection and broken bottom at the junction of the two materials

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