Tire R-rubber Encyclopedia

Admixing techniques for tire reclaimed rubber in rubber products

Create Date:2010-03-05 11:03:23Click volume:1177

The use of reclaimed rubber instead of raw rubber can effectively reduce the cost of raw materials for rubber products. As a reclaimed rubber, tire reclaimed rubber products are the most widely used and low-priced types of rubber, and they are favored by the majority of rubber product manufacturers. The tire reclaimed rubber is processed from the waste tire rubber powder and can be used as a substitute for natural rubber and synthetic rubber in various rubber product formulations. Due to different occasions for rubber products and different requirements for indicators, the amount of tire reclaimed rubber is very different, and some low-grade rubber products can even be produced entirely with tire reclaimed rubber.

In actual production, waste automobile tires can basically retain 50-60% of the original rubber after a series of processing steps. The effective rubber hydrocarbon content is about 30%, that is, 100 parts of tire reclaimed rubber can replace 30 parts. If tire reclaimed rubber is used instead of part of raw rubber to produce rubber products to maintain the same performance, it is usually calculated according to the formula of “70 raw rubber+100 parts of tire reclaimed rubber=100 raw rubber”. The rubber tires used on the market are different in waste tire types and raw materials, chemical additives, and different production processes. The content of effective rubber hydrocarbons in tire reclaimed rubber is also not the same, and some low-index tire reclaimed rubber rubber hydrocarbon content even does not reach 30%. .

There are many rubber products that can be blended with tire reclaimed rubber, such as hoses, conveyor belts, V-belts, automobile tires, etc., and there are differences between the amount of tire reclaimed rubber used in different rubber products and the amount of tire reclaimed rubber.

When rubber products are mixed with tire reclaimed rubber, if it is a hose with a particularly thin wall thickness, it is best to choose an ultra-thin tire reclaimed rubber with a size of 80 mesh to ensure smooth extrusion of the hose product during production; Due to limitations of its own performance, hoses that can be blended with tire reclaimed rubber will not be used for long periods at extremely high temperatures, extremely low, outdoors, or in oil environments. To meet the performance requirements of hoses, the amount of tire reclaimed rubber used can be around 50%. , reduce raw material costs.

Ordinary conveyor belt products have strong requirements for rubber raw materials, abrasion resistance, etc. High-strength tread reclaimed rubber in tire reclaimed rubber can meet the needs of the conveyor belt, but in order to guarantee the service performance and service life of the conveyor belt, high-grade conveyor belts The amount of tire reclaimed rubber is best not to exceed 5%. If cost permits, use high-strength tread reclaimed rubber.

V-belt is usually used in high-speed applications to ensure that the transmission process is stable, with little noise. It has high requirements for the toughness of rubber raw materials, and there is no hard index requirement for tensile strength. Therefore, ordinary tire reclaimed adhesive can be used. The amount of tire reclaimed rubber is about 20%.

Rubber sheets are usually laid on the floor of indoor, outdoor, factory buildings and other places. Different rubber sheets used in different occasions have different reclaimed rubber. General indoor rubber sheets need to use environmentally-friendly tire reclaimed rubber. For example, Hongyun Environmental-friendly tire reclaimed rubber, which is certified by the EU Environmental Protection Directive, is a good product; and some physical and mechanical properties of common plastic sheets that only require shock absorption, water insulation, etc. The requirement is very low, and it is not a bad idea to completely use tire reclaimed rubber.

Different types of tires used in different models, indicators, in order to ensure the safety and comfort of the entire driving process, tire products, tire reclaimed rubber in the amount of not more than 50%.

The formulation of rubber products mixed with tire reclaimed rubber should be adjusted. Usually, the strength and gloss of rubber products after adding tire reclaimed rubber will decrease, and the film will be harder. Common solutions are: 1 anti-aging agent can be more appropriate; 2 paraffin can be reduced by half, adding half of the LG-826 rubber brightener; 3 sulfur and stearic acid basically unchanged. After adjusting the formula of rubber products with reclaimed rubber, the strength, gloss, and softness of the products will be significantly improved. Hebei Hongyun Reclaimed Rubber Factory can design tire reclaimed rubber formulas and optimize formulas for free.