EPDM reclaimed rubber has the basic performance characteristics of EPDM rubber, excellent high and low temperature resistance and aging resistance, and can replace EPDM raw rubber to produce rubber products, effectively reducing production costs. Although EPDM rubber can not be used as the main material of tire tread rubber and carcass rubber, EPDM raw rubber will also be used in some parts of tire sidewall, tire strip, cushion belt, inner tube, bicycle tire, etc; Proper use of EPDM reclaimed rubber instead of EPDM raw rubber can reduce the tire manufacturing cost and optimize the processing performance of the rubber.
1. Application of EPDM recycled rubber in white sidewall
The traditional white sidewall of the tire is mostly made of natural rubber or natural rubber/styrene butadiene rubber, and the aging resistance of the finished product is poor. When the aging resistance of the white sidewall is improved by using the antioxidant, the antioxidant is easy to change color; Proper use of EPDM can significantly improve the heat resistance and weather aging resistance of sidewall rubber. EPDM recycled rubber can replace a certain proportion of EPDM raw rubber and be used together with natural rubber and styrene-butadiene rubber to produce white sidewall of tire, which can not only reduce the cost of raw materials, but also improve the aging resistance of sidewall rubber, and also promote the uniform dispersion of color fillers to a certain extent.
2. Application of EPDM recycled rubber in tire inner tube
Butyl rubber has good air tightness and is an ideal raw material for producing inner tubes of automobiles and bicycles. However, when using butyl rubber to produce inner tube completely, the rubber material in the folded part of the inner tube will elongate when it is stored, making the thickness of the folded part of the raw rubber inner tube blank thinner and prone to cracking and aging. Proper use of EPDM rubber can solve these problems. Mixing proper amount of EPDM recycled rubber in the inner tube can not only solve the problem of cracking and aging of the storage and folding parts of the inner tube, but also improve the mixing performance and extrusion performance of the rubber compound, reduce the shrinkage and delayed heat generation of the butyl rubber compound, and improve the softening and tackiness of the pure butyl inner tube after heat generation.
3. Application of EPDM recycled rubber in bicycle tyres
The bicycle tires produced with natural rubber and natural rubber/styrene butadiene rubber as the main raw materials have the problems of easy surface cracking and short service life in the process of use; Proper use of EPDM recycled rubber can improve the above problems. In actual production, black bicycle tyres can use high wear-resisting carbon black, medium and super wear-resisting carbon black as reinforcing agents; For white bicycle tires containing EPDM recycled rubber, it is recommended to use white carbon black and fill with clay, calcium carbonate, etc; Use paraffin oil, naphthenic oil, etc. as plasticizers.
EPDM recycled rubber has excellent heat resistance, low temperature resistance and aging resistance. It can not only play a role in the tire industry, but also be used in rubber products such as rubber plates, rubber pads, sealing products and other rubber products with EPDM raw rubber as the main raw material, effectively reducing production costs, and further improving the processing performance of rubber materials. Later, the editor will continue to discuss relevant issues with you.
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