The heel of the lightweight rubber boot is the key part of the rubber shoe structure, which requires the rubber material to have good elasticity, cushioning, abrasion resistance, flex resistance, slip resistance and lightness, etc., generally with natural rubber as the main raw material, with a small amount of styrene-butadiene rubber or butadiene rubber processing. Tire reclaimed rubber E5LYY219 is a recycled rubber processed from waste tires through crushing, desulfurization, refining and other processes, which has the basic performance characteristics of rubber and can be directly used in the production of lightweight rubber boots and heels, effectively reducing the cost of raw materials.
1. Completely use tire reclaimed rubber to produce lightweight rubber boot heel vulcanization formula
100 parts of tire reclaimed rubber, 3 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of antioxidant D, 20 parts of carbon black N330, 1 part of petroleum jelly, 5 parts of solid coumerone, 5 parts of liquid coumerone, 0.65 parts of accelerator M, 0.4 parts of accelerator D, 0.2 parts of accelerator CZ, 1.25 parts of sulfur; A total of 139 copies.
2. Key points of tire reclaimed rubber production of lightweight rubber boot heel formula design
(1) Lightweight rubber boots heel with tire reclaimed rubber option skills
Choosing the right reclaimed rubber is the basis for ensuring the quality of rubber products. The heel of the lightweight rubber boot requires the rubber material to have good elasticity, abrasion resistance, flexural resistance, high tensile strength, elongation at break and suitable hardness. Tire tread reclaimed rubber is processed from waste tire tread part of the rubber powder, which has higher rubber content, good elasticity, high mechanical strength than ordinary whole tire reclaimed rubber, and has better comprehensive performance of the finished rubber boot heel.
(2) Tire reclaimed rubber production of lightweight rubber boots heel vulcanization system design
When the heel of lightweight rubber boots is completely produced by tire reclaimed rubber, the sulfur-promotion system is mostly used, and the accelerators M, D, CZ and so on are combined with sulfur, which can effectively shorten the vulcanization time and improve the vulcanization efficiency while ensuring the physical properties of the vulcanized rubber.
(3) Tire reclaimed rubber production, lightweight rubber boots, heel reinforcement filling system design
Carbon black is the most commonly used reinforcing agent in rubber product formulations. When producing lightweight rubber heels from tire reclaimed rubber, it is recommended to use high wear-resistant carbon black such as N330 to effectively improve the wear resistance, tear resistance, flex resistance and elasticity of vulcanized rubber. Appropriate filling of clay or calcium carbonate can further improve the heat resistance and processing performance of the rubber compound.
(4) Tire reclaimed rubber production of lightweight rubber boots heel softening system design
Coumeron resin is divided into solid coumaron and liquid coumerone, which can improve the process properties of rubber extrusion, calendering and adhesion, and give the rubber good elasticity and adhesion.
(5) Tire reclaimed rubber production of lightweight rubber boots heel anti-aging system design
Antioxidant D can effectively prevent the aging phenomenon caused by oxidation, heat and other factors in the process of processing and use, and prolong the service life of the heel of reclaimed rubber lightweight rubber boots.
When the heel of the lightweight rubber boot is completely reclaimed tire rubber, the rubber formula must be reasonably designed and the production process conditions must be appropriately adjusted, especially the vulcanization and mixing process. In actual production, the outsole and heel of lightweight rubber boots can also be mixed with tire reclaimed rubber to reduce costs, and we can continue to discuss related issues in the future.
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