EPDM reclaimed rubber is made from EPDM die head rubber, unvulcanized EPDM rubber, or waste EPDM rubber products. It retains the basic performance characteristics of EPDM base rubber, with excellent resistance to high and low temperatures, ozone, and weathering. It can fully or partially replace EPDM rubber in producing rubber products, such as rubber sealing strips, waterproof membranes, heat-resistant hoses, and heat-resistant rubber sheets. Different varieties of EPDM rubber products have varying performance requirements, and the proportion of EPDM reclaimed rubber blending and production formulas vary greatly.
1. The rubber sealing strip contains a formula of recycled EPDM reclaimed rubber
Rubber sealing strips exposed outdoors for long periods require good ozone resistance, aging resistance, and elasticity. Some products also have high requirements for permanent compression deformation and dimensional stability E6LYY786 When producing sealing strips for ordinary building doors and windows and automotive sealing strips, a combination of EPDM rubber and reclaimed EPDM rubber can be used to reduce raw material costs.
EPDM rubber: 70 parts, EPDM reclaimed rubber: 30 parts, zinc oxide: 5 parts, stearic acid: 1 part, carbon black N550: 105 parts, carbon black N774: 25 parts, naphthenic oil 100 parts, gumarone resin: 10 parts, accelerator M: 1.5 parts, accelerator TMTD: 1 part, sulfur: 1.5 parts; Total: 350 parts.
2. The rubber waterproof membrane contains a formula of recycled EPDM reclaimed rubber
EPDM rubber waterproof membranes are mainly used for roofing, underground engineering, and other waterproofing scenarios, requiring certain requirements for weather resistance, tensile properties, low-temperature flexibility, and water resistance. Appropriately blending EPDM reclaimed rubber can effectively reduce raw material costs, and when necessary, it can be combined with butyl reclaimed rubber.
EPDM rubber 75 parts, EPDM reclaimed rubber 25 parts, zinc oxide 5 parts, stearic acid 1 part, antioxidant AW 0.5 parts, antioxidant MB 2 parts, carbon black N550 85 parts, silica black 20 parts, kaolin 55 parts, petroleum jelly 20 parts, paraffin oil 64 parts, coupling agent 1 part, accelerator BZ 2.4 parts, accelerator DM 0.9 parts, accelerator NA-22 0.7 parts, accelerator TMTD 2.5 parts; A total of 360 parts.
Ethylene EDM reclaimed rubber 100 parts, zinc oxide 3.5 parts, stearic acid 0.7 parts, carbon black N550 70 parts, heavy calcium 50 parts, paraffin oil 30 parts, tackifying resin 3.5 parts, accelerator BZ 0.6 parts, accelerator CZ 1.4 parts, accelerator TMTD 0.3 parts, sulfur 0.7 parts; totaling 260.7 parts.
3. The heat-resistant rubber tube contains a formula of EPDM reclaimed rubber
Heat-resistant rubber tubing is mainly used to transport hot water, hot air, and other specific media. The rubber used must have good thermal aging resistance and physical and mechanical properties, generally processed primarily from EPDM rubber; EPDM reclaimed rubber can replace some EPDM base rubber to produce heat-resistant rubber hoses, improving the processing performance of the compound and reducing raw material costs.
EPDM rubber 70 parts, EPDM reclaimed rubber 30 parts, zinc oxide 5 parts, stearic acid 2 parts, antioxidant AP 2 parts, carbon black N550 110 parts, carbon black N990 170 parts, naphthenic oil 105 parts, plasticizer 5 parts, accelerator PZ 3 parts, accelerator BZ 3 parts, accelerator TMTD 1.8 parts, accelerator TETD 1.2 parts, vulcanizing agent DTDM 2 parts, sulfur 0.5 parts; Total: 510.5 parts.
4. The heat-resistant rubber board contains a formula of recycled EPDM rubber
Heat-resistant rubber sheets are widely used in industrial equipment padding, pipeline sealing, and high-temperature working environments, requiring the compound to have certain heat resistance, aging resistance, and mechanical strength. Ordinary heat-resistant rubber sheets can appropriately increase the amount of EPDM reclaimed rubber to reduce formulation costs while meeting usage requirements.
EPDM rubber: 70 parts, EPDM reclaimed rubber: 30 parts, zinc oxide: 3.5 parts, stearic acid: 1 part, carbon black N660: 63 parts, carbon black N770: 77 parts, paraffin oil: 70 parts, accelerator: BZ 2.1 parts, accelerator: PZ 2.1 parts, accelerator TMTD: 2.1 parts, sulfur: 0.4 parts, vulcanizing agent DTDM: 1.4 parts; Total: 322.6 parts.
EPDM reclaimed rubber can also be used in insulation materials, wire and cable casings, waterstops, conveyor belts, sports facilities, and anti-corrosion linings in rubber products. Different types of rubber products have different performance requirements, so it is not necessary to simply apply the same reclaimed rubber formula. By combining the performance requirements, quality of reclaimed rubber, and reasonable formulation design for processing equipment, this ensures product quality while reducing costs in rubber product formulations.
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