The outsole of the cloth rubber shoe needs to directly contact the ground and withstand frequent friction, pressure and bending. It is generally processed from natural rubber/styrene-butadiene rubber, natural rubber/cis-butadiene rubber or natural rubber/styrene-butadiene rubber/cis-butadiene rubber combined with rubber. Latex reclaimed rubber has good compatibility with natural rubber, styrene-butadiene rubber and cis-butadiene rubber, and can replace some cis-butadiene rubber to produce the outsole of cloth rubber shoes, effectively reducing the cost of raw materials.
1. The effect of using latex reclaimed rubber instead of cis-butadiene rubber to produce the outsole of cloth rubber shoes
Latex reclaimed rubber replaces part of cis-butadiene rubber to produce cloth rubber shoe outsole. After a certain proportion of latex reclaimed rubber is mixed with rubber shoe outsole rubber, the plasticity of the mixed rubber increases, the compounding agent is easy to disperse, and the powder is eaten quickly; therefore, the mixing time Short, the rollability and shrinkage of the rubber compound have been improved to a certain extent, the rubber compound has good heat resistance, good self-adhesion, and is easy to paste and form. After the latex reclaimed rubber replaces the cis-butadiene rubber in an appropriate proportion, the indicators of the outsole of the cloth rubber shoes meet the national standards.
In actual production, when latex reclaimed rubber replaces some butadiene rubber to produce black outsole of low-cost cloth rubber shoes, it is recommended to use black latex reclaimed rubber, which has good elasticity, high elongation at break, environmental protection and tasteless, and the product price is relatively the same as the index The latex reclaimed rubber is lower; when the latex reclaimed rubber produces a light-colored outsole, it is recommended to use white latex reclaimed rubber, which is easy to color and does not migrate.
2. Recycled latex rubber instead of butadiene rubber to produce cloth rubber shoes outsole formula adjustment skills
(1) Black outsole of cloth rubber shoes: when latex reclaimed rubber replaces part of cis-butadiene rubber to produce black cloth rubber shoes outsole, a low-sulfur and high-promoting vulcanization system can be used to promote M/D/DM with sulfur; the reinforcing filling system can be used Reinforced with high wear-resistant carbon black, filled with clay, calcium carbonate or soft carbon black; for softening system, it is recommended to use coumarone, second-line oil, motor oil, pine tar, paraffin oil, naphthenic oil, petrolatum, spindle oil, etc.; anti-aging The system uses antioxidants RD, BLE, 4010NA, AW, H, etc.
(2) Light-colored outsole of cloth rubber shoes: when latex reclaimed rubber replaces part of cis-butadiene rubber to produce light-colored cloth rubber shoes outsole, accelerator M/D/DM or accelerator M/D/CZ combined with sulfur is generally used to control Amount of Accelerator D (Accelerator D has the phenomenon of contamination and discoloration); use white carbon black, Bai Yanhua, clay, lignin, etc. in the filling system; softening plasticizers can use paraffin oil, naphthenic oil, spindle oil, petrolatum, calcium-based Grease and other non-polluting products; the anti-aging system uses non-polluting anti-aging agents such as anti-aging agents MB, SP, DOD, 246, 2246, etc.
3. The production process method of latex reclaimed rubber instead of butadiene rubber to produce the outsole of cloth rubber shoes
When latex reclaimed rubber and cis-butadiene rubber are used together to produce the outsole of cloth rubber shoes, there are two main blending methods for the two rubber materials, one is direct blending, and the other is masterbatch blending.
①The cis-butadiene rubber/latex reclaimed rubber using the direct blending method has a faster vulcanization speed, a slight increase in hardness, a decrease in elongation at break, large shear stress, poor fluidity, and poor roll wrapping. The compounded rubber is 2ELYY811 The surface is rough and not sticky to the touch. ②The cis-butadiene rubber/latex reclaimed rubber using the masterbatch blending method accelerates the vulcanization process, increases the hardness of the rubber, and has good rolling properties during mixing. The surface of the mixed rubber is smooth and sticky, and the die expansion value is low. ; When used in the production of extruded products, the surface of the extruded rubber is smooth and dimensionally stable.
When using latex reclaimed rubber to replace some butadiene rubber to prepare the outsole of cloth rubber shoes, the rubber product manufacturer must choose the appropriate latex reclaimed rubber, reasonably determine the amount of latex reclaimed rubber, and appropriately adjust the formula and production process. The editor will continue to communicate with you later. Discuss related issues.
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