Rubber Chem Encyclopedia

The use of carbon black in recycled rubber products

Create Date:2019-09-19 08:34:56Click volume:236
The use of carbon black in recycled rubber products

Carbon black is the most commonly used reinforcing agent in the production of reclaimed rubber products. The reinforcing effect is remarkable, which can improve the physical and mechanical strength of the products and improve the process performance of the rubber compound. At present, there are many kinds of carbon black, such as channel black, medium super wear-resistant carbon black, high wear-resistant carbon black, semi-reinforcing carbon black, acetylene black, thermal black, etc., different types of carbon black in reclaimed rubber The role is different; in actual production, many times a single carbon black can not meet the demand of recycled rubber products, it is necessary to use two or more carbon black in combination with 1JLYY919.

1. Different effects of different varieties of carbon black in reclaimed rubber

When using recycled rubber to produce rubber products, super wear-resistant carbon black, medium super wear-resistant carbon black, high wear-resistant furnace black and other products can give the rubber excellent wear resistance, often used in the production of tire tread rubber containing reclaimed rubber. Conductive carbon black headed by acetylene black can be used together with reclaimed rubber to prepare conductive products; semi-reinforcing carbon black has the dual functions of reinforcing and filling in reclaimed rubber, which can give the rubber a certain mechanical strength and good softness. Sex and so on.

2. Why do carbon black in the production of recycled rubber products need to be used together?

Each kind of carbon black has its own unique advantages and has certain defects. From the aspect of the influence of carbon black on the processing technology of the rubber compound: the reinforcing effect of the grooved carbon black is good, but the processing performance is poor, and the carbon black can be pressed out quickly. Semi-reinforcing carbon black can improve the process performance of recycled rubber products; from the comprehensive performance requirements of recycled rubber products, furnace black can impart good tensile strength, tensile stress, hardness and wear resistance to reclaimed rubber; The combination of spray carbon black, thermal black carbon and semi-reinforcing carbon black can reduce the cost and ensure the mechanical strength and softness of the reclaimed rubber.

3. Carbon black commonly used in different types of recycled rubber products

When using rubber reclaimed rubber and tire reclaimed rubber to produce rubber products, rubber products manufacturers can choose super wear-resistant carbon black, medium super wear-resistant carbon black, high wear-resistant furnace black, fast press black, semi-reinforcing carbon black, trough carbon Black, general carbon black, thermal black, fine particle carbon black and high-definition carbon black; butyl reclaimed rubber products often use slot black, fast extrusion carbon black, semi-reinforcing furnace black and general carbon Black; nitrile reclaimed rubber products can choose high wear-resistant carbon black, fast press black, semi-reinforcing carbon black, black or hot black carbon; EPDM recycled rubber products often use super wear-resistant carbon black, Super Wear-resistant carbon black, high wear-resistant furnace black, fast-pressing black, semi-reinforcing carbon black, general carbon black or channel black.

Acetylene black is essential when preparing conductive rubber articles using reclaimed rubber.

When using recycled rubber or reclaimed rubber and raw rubber to produce rubber products, rubber manufacturers need to consider the comprehensive requirements of recycled rubber products, process equipment conditions, cost budget and other factors, and adjust the production process and product index of recycled rubber products through carbon black. And the relationship between costs, reducing the cost of carbon black under the premise of ensuring quality.