Butyl Rubber Encyclopedia

The significance of using butyl reclaimed rubber to replace three commonly used rubbers

Create Date:2021-01-04 11:00:23Click volume:4143
The significance of using butyl reclaimed rubber to replace three commonly used rubbers

Butyl reclaimed rubber has excellent air tightness, water tightness, heat resistance, chemical stability, sound absorption and shock absorption, etc. The product price is much lower than that of butyl raw rubber. It can replace butyl rubber in whole or in part to produce butyl products, which is effective Reduce raw material costs. In actual production, butyl reclaimed rubber can not only replace butyl virgin rubber, but also replace part of natural rubber and EPDM rubber, improve rubber processing performance and product physical properties, and reduce raw material costs.

1. Butyl reclaimed rubber replaces butyl rubber

Butyl reclaimed rubber retains the basic performance characteristics of butyl rubber, and can directly replace butyl rubber in whole or in part in the production of various products, reducing raw material costs. In actual production, butyl rubber has the characteristics of slow vulcanization of 2YLYY14 and poor compatibility with other types of rubber. The butyl rubber is replaced with an appropriate amount of butyl reclaimed rubber, which can further increase the vulcanization speed of the butyl rubber and improve the compatibility between the butyl rubber and other rubbers.

2. Butyl reclaimed rubber replaces natural rubber

The traditional rubber inner tube is made of natural rubber as the main raw material. The product has the problems of poor air tightness, poor high temperature tear resistance, and short service life. Butyl reclaimed rubber can be blended with natural rubber in any ratio, and the blending effect is good. Therefore, the natural rubber in the formula of natural rubber products can be replaced with part of butyl reclaimed rubber to improve the heat resistance, aging resistance and air permeability resistance of natural rubber products. When butyl reclaimed rubber replaces natural rubber, attention should be paid to the changing rules of the product's tensile strength, constant tensile stress and other indicators.

3. Butyl reclaimed rubber replaces ethylene propylene rubber

The products of EPDM after the chain interruption in the thermal oxygen aging process will be intertwined, the rubber elastic structure will be destroyed, and it will become hard and brittle after aging. Thermal oxidative aging of butyl rubber/reclaimed rubber is mainly due to the breakage of macromolecular chains, which will become soft and sticky after aging. In actual production, EPDM products are combined with a certain proportion of butyl rubber, which can delay the aging time of products. Butyl reclaimed rubber has the basic performance characteristics of butyl rubber and can replace part of EPDM rubber to improve the aging resistance of products.

Studies have shown that butyl reclaimed rubber replaces about 20% of EPDM rubber, and the physical properties of the rubber can basically meet the performance requirements. In actual production, after partial EPDM rubber is replaced with butyl reclaimed rubber, the mixing cycle of the internal mixer is shortened, the rubber extrusion performance is improved, and the extrusion expansion and calendering shrinkage are reduced. Using butyl reclaimed rubber to replace part of EPDM rubber can not only reduce the cost of raw materials, but also improve the performance of the rubber material and the aging resistance of the finished product.

Butyl reclaimed rubber can be used alone, or it can replace other types of rubber in combination with it to produce low-cost, cost-effective rubber products; in actual production, butyl reclaimed rubber is inner tube, vulcanized bladder, inner liner, damping shock absorber Blocks, anti-virus appliances, inner tube valve cores, anti-corrosion products, heat-resistant conveyor belts and other products are widely used.

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