The main function of the strip in the shoe material is to bond the upper and the bottom to protect the upper from wear and tear. Or bright-colored strips use light-colored film, white strips use white Zou film, etc. The reclaimed rubber processed from waste rubber products has many varieties and low prices, and can be used for the production of shoe material strips. Among them, different colors of rubber shoe strips use different reclaimed rubbers, and the types and dosages of rubber additives vary greatly.
1. Natural rubber + white latex reclaimed rubber to produce white strip adhesive formula
80 parts of natural rubber, 20 parts of white latex reclaimed rubber, 5 parts of zinc oxide, 1 part of stearic acid, 0.5 part of antioxidant SP-C, 60 parts of light calcium, 20 parts of titanium dioxide, 50 parts of lithopone, 0.6 parts of ultramarine , 2 parts of RX-80 resin, 2 parts of calcium-based ester, 0.2 part of accelerator D, 0.7 part of accelerator DM, 0.4 part of accelerator M, 2.3 parts of sulfur; total: 244.7 parts.
2. Natural rubber + cis-butadiene rubber + white latex reclaimed rubber to produce color strip adhesive formula
60 parts of natural rubber, 15 parts of cis-butadiene rubber, 25 parts of white latex reclaimed rubber, 7 parts of zinc oxide, 2 parts of stearic acid, 40 parts of clay, 60 parts of quartz powder, 2.5 parts of petrolatum, 1.5 parts of motor oil, accelerator D 0.5 0.4 part of accelerator DM, 0.3 part of accelerator M, 2 parts of sulfur, 0.8 part of colorant; total: 217 parts.
3. Natural rubber + black latex reclaimed rubber to produce black strip rubber formula
70 parts of natural rubber, 30 parts of black latex reclaimed rubber, 5 parts of zinc oxide, 0.5 part of stearic acid, 1 part of antioxidant D, 0.5 part of antioxidant 4010, 55 parts of light calcium, 30 parts of clay, 26 parts of high wear-resistant carbon black parts, 2 parts of coumarone resin, 2 parts of industrial grease, 0.4 part of accelerator M, 0.3 part of accelerator D, 0.7 part of accelerator DM, 2.1 parts of sulfur; total: 225.5 parts.
4. Recipe design skills for natural rubber/reclaimed rubber to produce different colors of strip adhesive
(1) Rubber raw materials: Natural rubber can be used together with white latex reclaimed rubber and colored latex reclaimed rubber to produce white, light-colored and colored perimeter rubber, or with black latex reclaimed rubber and tire tread reclaimed rubber 2ELYY712 to produce black perimeter rubber , and effectively reduce the cost of raw materials on the premise of ensuring product quality.
(2) Rubber accessories: When natural rubber/reclaimed rubber is combined with rubber to produce shoe material strip rubber, sulfur-accelerator system, M+DM+D, is generally used; zinc oxide and stearic acid are used as active agents. Generally, black fence rubber is reinforced with carbon black with low reinforcing performance and filled with a large amount of inert fillers to improve the fatigue resistance of the rubber compound. The light-colored strip glue is mostly calcium carbonate, and an appropriate amount of lithopone is added. Use non-polluting antioxidants with good resistance to flex fatigue and sunlight aging. Use antioxidant A/4010NA/H for dark-colored natural rubber/recycled rubber for fences, and MB/2246/264 for light-colored fences /SPC, etc. In the softening and plasticizing system, it is recommended to use coumarone resin for dark-colored tape, and Vaseline for light-colored tape.
(3) Colorants: When using natural rubber/reclaimed rubber and rubber to produce strip glue, the selection of colorants is very important, especially for light-colored strips, choose strong tinting strength, bright color, non-migration, high temperature resistance, Anti-aging agent for steam resistance, non-discoloration and sunlight resistance; to improve the vividness of the color strip adhesive, an appropriate amount of titanium dioxide can be added; the commonly used inorganic colorants are chrome yellow, chrome green, iron oxide red, iron oxide yellow, etc.; organic The colorants include rubber scarlet, Lissol red, light fast yellow, Hansa yellow, phthalocyanine green, phthalocyanine blue, etc.
When using natural rubber/reclaimed rubber and rubber to produce white, light-colored, colored, and black fence rubber, rubber product manufacturers must choose appropriate rubber raw materials and rubber accessories, and design formulas reasonably. The editor will continue to discuss related issues with you later.
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