Bicycle tires include bicycle inner and outer tires, trolley inner and outer tires, etc. Among them, bicycle tires mainly include tread rubber and cord rubber, which are generally processed from natural rubber, styrene-butadiene rubber and butadiene rubber. The rubber powder processed from waste rubber products can be mixed into different parts of bicycle tires, which can effectively reduce the cost of raw materials on the premise of ensuring product quality. In actual production, the addition of rubber powder can also improve the processing performance and finished product quality of bicycle tires.
1. Reference formula for bicycle tire tread compound mixed with rubber powder
40 parts of natural rubber, 40 parts of styrene-butadiene rubber, 20 parts of cis-butadiene rubber, 20 parts of rubber powder, 5 parts of zinc oxide, 3 parts of stearic acid, 30 parts of super wear-resistant carbon black, 20 parts of high wear-resistant carbon black, anti-aging Agent 4010 1.5 parts, antioxidant RD 1.5 parts, engine oil 8 parts, accelerator DM 0.8 parts, accelerator CZ 0.8 parts, sulfur 1.4 parts; total: 192 parts.
40 parts of natural rubber, 20 parts of styrene-butadiene rubber, 40 parts of cis-butadiene rubber, 20 parts of rubber powder, 4 parts of zinc oxide, 3 parts of stearic acid, 24 parts of super wear-resistant carbon black, 30 parts of high wear-resistant carbon black, anti-aging Agent 4010 0.5 part, antioxidant AM 1 part, antioxidant A 0.5 part, antioxidant H 1 part, coumarone 5 parts, heavy oil 3.3 parts, paraffin 1 part, accelerator DM 0.7 part, accelerator CZ 0.8 part, sulfur 1.2 copies; total: 196 copies.
2. Reference formula for bicycle tire cord rubber blended with rubber powder
50 parts of natural rubber, 50 parts of cis-butadiene rubber, 20 parts of rubber powder, 5 parts of zinc oxide, 2.5 parts of stearic acid, 8 parts of calcium carbonate, 20 parts of aerated carbon black, 10 parts of semi-reinforced carbon black, antioxidant RD 1 part, antioxidant A 0.5 parts, engine oil 10 parts, pine tar 6 parts, accelerator DM 0.8 parts, accelerator CZ 0.7 parts, accelerator M 1.2 parts, sulfur 1.8 parts; total: 187.5 parts.
3. Tips for purchasing rubber powder for bicycle tires
Rubber powder can be divided into ordinary rubber powder, activated rubber powder and modified rubber powder according to the processing method, and can be divided into coarse rubber powder, fine rubber powder, fine rubber powder and ultra-fine rubber powder according to the particle size. When using rubber powder to reduce the raw material cost of bicycle tires, it is recommended to use fine rubber powder and activated rubber powder.
Fine rubber powder: The fine rubber powder has high fineness and can be directly mixed into the production of rubber products. After adding fine rubber powder to the bicycle tire compound, the tensile strength and elongation at break of the rubber compound can meet the requirements, and the fatigue strength and cracking performance are better than those of the compound without rubber powder 2ELYY325. In actual production, rubber product manufacturers can also add fine rubber powder and reclaimed rubber to the bicycle tire compound, properly adjust the production formula and production process conditions, and reduce more costs on the premise of ensuring product quality.
Activated rubber powder: The so-called activated rubber powder, that is, the rubber powder obtained by surface activation of ordinary rubber powder, has high reactivity and good dispersion in rubber and compounding agents. 10-30 parts of activated rubber powder are mixed into bicycle tires, which can meet different needs. In actual production, bicycle tires mixed with activated rubber powder have better fatigue performance and wear resistance, low heat generation and low rolling resistance during use.
The rational use of rubber powder in bicycle tire tread rubber and cord rubber can not only reduce the cost of raw materials, but also improve the processing performance of rubber materials and the performance of finished products. When necessary, rubber powder and reclaimed rubber can be used together. Discuss relevant issues with you.
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