Tire R-rubber Encyclopedia

Method for adding polyethylene to bicycle tread rubber containing reclaimed rubber

Create Date:2019-08-23 08:36:17Click volume:115
Method for adding polyethylene to bicycle tread rubber containing reclaimed rubber

The use of reclaimed rubber in bicycle tread rubber can reduce the production cost, and the use of a certain proportion of plastic in the formula of bicycle tread rubber containing reclaimed rubber, and the choice of rubber and plastic can further improve the comprehensive performance of bicycle tread rubber; In actual production, which plastic can be added to the bicycle tread rubber containing reclaimed rubber. How to add it? How to design rubber and plastic containing reclaimed rubber and use bicycle tread rubber formula 1JLYY823?

1. Low density polyethylene can be used in bicycle tread rubber containing reclaimed rubber

Low-density polyethylene, ie high-pressure polyethylene, has good flexibility, extensibility, chemical stability and easy processing. It has low density and light texture. It has higher impact strength than high-density polyethylene. It is used together with rubber to produce bicycle tread. Glue can further improve the comprehensive index of tread rubber. Since low-density polyethylene itself has poor mechanical strength and aging resistance, when rubber and plastic are used together to produce bicycle tread rubber, an appropriate amount of natural rubber and butadiene rubber are required in the formulation.

2. Bicycle tread rubber containing reclaimed rubber can use rubber-plastic masterbatch to improve mixing effect

Masterbatch is to make part of the compounding agent into a rubber compound, which is used as the base rubber for the next step. The rubber product industry often mixes carbon black, softener, plasticizer and raw rubber into carbon black masterbatch. Glue, the vulcanizing agent and the accelerator are separately mixed into a masterbatch to promote uniform dispersion of the compounding agent to avoid pollution. When low-density polyethylene is used in bicycle tread rubber, some natural rubber, butadiene rubber and low-density polyethylene (usually 30/15/15) can be made into rubber-plastic masterbatch and then added to reclaimed rubber. In the formulation of the bicycle tread rubber, the plastic is uniformly dispersed in the rubber compound.

3. Suitable formula for the combination of rubber and plastic for bicycle tread rubber containing reclaimed rubber

60 parts of rubber and plastics, 20 parts of natural rubber, 20 parts of butadiene rubber, 20 parts of recycled rubber, 5 parts of zinc oxide, 2.5 parts of stearic acid, 1.8 parts of anti-aging agent, 45 parts of carbon black, 20 parts of light calcium, rubber 6 parts of oil, 1 part of rosin, 4 parts of coumarone, 1.3 parts of accelerator, 1.4 parts of sulfur, total: 208 parts. The vulcanization system can be mainly composed of accelerator CZ, together with accelerator DM; the reinforcing system can be selected from carbon black N220 or N330, or both; the anti-aging system can use anti-aging agent D and anti-aging agent 4010 together to improve the regrind-containing rubber. Rubber and plastic combined with tire tread rubber comprehensive indicators.

Recycled rubber is a product of recycling and reprocessing of waste rubber products. It is widely used in the rubber industry and non-rubber industry, especially in the production of tires. When using reclaimed rubber in bicycle tread rubber, rubber manufacturers can choose the reclaimed rubber product that has the closest requirement to the tread rubber index. Properly adding rubber and plastic masterbatch can reduce the cost of raw materials and improve the tread. Glue processing performance and comprehensive indicators.