Steel wire glue is one of the tire bead parts. The physical and mechanical strength and wear resistance requirements of the rubber compound used are lower than that of tire tread rubber and sidewall rubber. Therefore, a large amount of recycled rubber can be blended in the formulation to reduce production. The purpose of the cost. When a high proportion of recycled rubber is used in the tire bead wire glue, the types and amounts of the components in the formulation are different, and the comprehensive index of the obtained bead wire glue is different.
Formula 1: 100 parts of natural rubber, 200 parts of recycled rubber, 30 parts of zinc oxide, 5 parts of stearic acid, 17 parts of sulfur, 3 parts of accelerator, 25 parts of rust red, 95 parts of carbon black, 50 parts of light calcium, clay 170 Parts, 10 parts of pine tar, 12 parts of bitumen, 2.5 parts of antioxidant D; a total of 719.5 parts.
Formula 2: 100 parts of natural rubber, 200 parts of recycled rubber, 24 parts of zinc oxide, 5 parts of stearic acid, 6 parts of lead oxide, 17 parts of sulfur, 3.5 parts of accelerator, 25 parts of rust red, 95 parts of carbon black, light calcium 50 parts, 170 parts of clay, 10 parts of pine tar, 12 parts of bitumen, 2.5 parts of anti-aging agent D; a total of 720 parts.
Formulation 3: 100 parts of natural rubber, 100 parts of recycled rubber, 10 parts of zinc oxide, 2 parts of stearic acid, 7 parts of sulfur, 1 part of accelerator, 12 parts of iron oxide, 60 parts of carbon black, 100 parts of light calcium, 80 clay Servings, 8 parts of pine tar, 2 parts of rosin, 3 parts of asphalt, 2 parts of antioxidant D; a total of 487 parts.
The difference between Formulation 1 and Formulation 2 is that a new compounding agent, lead oxide, is added to Formulation 2. Lead oxide can be used as a vulcanizing agent in the production of rubber products. Therefore, the types and amounts of accelerators in Formulation 1 and Formulation 2 should be Appropriate adjustment, in the formula 1, the accelerator DM and the accelerator CZ are used in a certain proportion, wherein the thiazole accelerator DM has good flatness, and the prepared vulcanized rubber is wear-resistant, aging-resistant, and not easy to crack, and is used as a main accelerator with a small amount. The magnetic ring amide accelerator CZ; in Formulation 2, the accelerator M, the accelerator DM and the accelerator TMTD are used in combination to better coordinate the vulcanization time, the vulcanization rate and the vulcanization degree.
Compared with the first two formulations, the proportion of reclaimed rubber in Formulation 3 is small, and the mechanical strength and reinforcing performance of the compound are very different. In Formulation 1 and Formulation 2, it is better to select the process performance and the filling amount is high. Carbon black N774 to improve the time elasticity and low temperature elasticity of tire bead wire glue, reduce heat generation; carbon black N660 is recommended in Formula 3, this reinforcing agent has high high tensile strength of high setting furnace black The processing properties of the carbon black, the high resilience of the semi-reinforcing carbon black, and the flexural flexibility of the fine particle carbon black can improve the overall performance of the steel wire glue. The elongation of the rubber using carbon black N660 is low, but the proportion of natural rubber used in Formula 3 is high, and this effect is negligible.
The use of a certain proportion of recycled rubber in rubber products can significantly reduce the cost of raw materials. When the proportion of recycled rubber is different, the types and dosages of the compounding agents in each compounding system of the rubber compound need to be adjusted in time. Do you have any good suggestions and comments about the tire bead wire glue formula mixed with reclaimed rubber that we share today?