The EPDM reclaimed rubber processed from EPDM unvulcanized compound rubber and waste EPDM rubber products retains the basic performance characteristics of EPDM raw rubber, and can replace EPDM rubber to produce various rubber products. Reduce raw material costs. In actual production, EPDM reclaimed rubber can be used not only with EPDM raw rubber, but also with other common rubber and plastic materials to reduce costs and improve the overall performance of blended elastomers.
1. Combination of EPDM rubber and EPDM reclaimed rubber
EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. It has excellent ozone resistance, heat resistance, weather resistance and other aging resistance properties. It is widely used in automotive parts, waterproof membranes, and wires. Cable jackets, heat-resistant hoses, tapes, sealing materials, etc. EPDM reclaimed rubber 2ELYY84 has the characteristics of EPDM rubber, good compatibility with EPDM raw rubber, and low price. It can directly replace all or part of high-priced EPDM rubber to produce various types of rubber products with EPDM rubber as the main raw material. Rubber products, effectively reduce the cost of raw materials.
Compared with EPDM reclaimed rubber, EPDM reclaimed rubber has better fluidity and plasticity, less expansion and shrinkage, and less heat generation during processing. EPDM rubber products mixed with EPDM reclaimed rubber have better processing performance and more stable finished product dimensions. , which is very beneficial to the processing and use of EPDM rubber products, especially sealing products.
2. Combination of natural rubber and EPDM reclaimed rubber
Natural rubber has the characteristics of high mechanical strength, good elasticity, and small hysteresis loss, but it has poor aging resistance. Compared with EPDM rubber, the blending effect of EPDM reclaimed rubber and natural rubber is better; a small amount of EPDM reclaimed rubber is mixed into natural rubber, which can significantly improve the heat resistance and ozone resistance of natural rubber products. sex, etc. The co-vulcanization of NR/R-EPDM is the basis for both.
The natural rubber/EPDM reclaimed rubber blend can use a sulfur-accelerator system or a peroxide vulcanization system. In actual production, natural rubber chooses a slow vulcanization speed or a delayed vulcanization system, which is conducive to co-vulcanization with EPDM reclaimed rubber; Improve the blending effect of EPDM reclaimed rubber and natural rubber.
3. Combined use of styrene-butadiene rubber and EPDM reclaimed rubber
The physical properties and processing properties of styrene-butadiene rubber are similar to those of natural rubber, and its wear resistance, heat resistance, aging resistance and vulcanization speed are better than those of natural rubber. It is widely used in tires, tapes, hoses, wires and cables, medical equipment and other fields. The combination of EPDM reclaimed rubber and styrene-butadiene rubber can improve the heat aging resistance, weather resistance, ozone aging resistance and low temperature resistance of styrene-butadiene rubber.
When EPDM reclaimed rubber and styrene-butadiene rubber are used together, the physical and mechanical properties of the combined rubber vary with the amount of EPDM reclaimed rubber. In actual production, it is recommended to use a sulfur-accelerator system for SBR/R-EPDM blends, such as accelerator CZ with sulfur; it can be used to prepare rubber tire tread compounds.
4. Isoprene rubber and EPDM reclaimed rubber used together
Isoprene rubber is synthesized from isoprene, and its structural properties are similar to natural rubber, also known as synthetic natural rubber. Isoprene rubber and EPDM reclaimed rubber have a good combined effect. It is used together with an appropriate amount of EPDM reclaimed rubber, and the combined rubber vulcanizate has good physical and mechanical properties and good heat resistance.
5. Combined use of cis-butadiene rubber and EPDM reclaimed rubber
Butadiene rubber is polymerized from butadiene, with a regular internal structure and a cis structure content of more than 95%. The vulcanizate has better cold resistance, wear resistance and elasticity than natural rubber and styrene-butadiene rubber vulcanizates. In actual production, EPDM reclaimed rubber has good compatibility with cis-butadiene rubber, and the dispersing effect of the rubber is good, and the comprehensive performance of the product is good.
EPDM rubber, natural rubber, styrene-butadiene rubber, isoprene rubber, cis-butadiene rubber and other general-purpose rubbers can not only improve the comprehensive performance of rubber products, but also effectively reduce the cost of raw materials. In actual production, EPDM reclaimed rubber can also be mixed into special rubber and various rubber and plastic materials.
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