Styrene-butadiene rubber has good wear resistance, heat resistance, aging resistance and other properties, the use of styrene-butadiene rubber to produce black power plugs is the choice of many manufacturers. EPDM recycled rubber has good resistance to high and low temperature, anti-aging, high insulation, anti-corrosion and other properties, and the combination of styrene-butadiene rubber can improve the processing performance of rubber plugs, improve the performance of products, and reduce production costs.
1. Recipe design skills
(1) Vulcanization system: sulfur vulcanization system is selected, combined with accelerator and active agent to improve the vulcanization rate, and the active agent zinc oxide and stearic acid can activate the entire vulcanization system and improve the crosslinking density and aging resistance of the vulcanized rubber.
(2) Reinforced filling system: active calcium carbonate HY23S10J2Y-WFM has good compatibility with rubber, which can make styrene-butadiene rubber /EPDM recycled rubber easy to mix, easy to disperse in rubber, improve processing performance, improve the mechanical strength, elongation, tensile strength, tear strength and so on of rubber plugs.
Lide powder can be used as a filler in the power plug, and the active calcium carbonate can be used to improve the heat resistance and wear resistance of the rubber compound, chemical stability, etc. Lide powder is a white powder crystalline powder, with a strong hiding power, in the black power plug in the neutral Lide powder should not be used more, otherwise it will make the color of the product white.
Talc is evenly dispersed in the rubber compound, which can improve the shape stability of rubber plugs, reduce deformation, increase flexion strength, etc.
Clay is easy to disperse in the rubber material, can be used in large quantities, increase the volume of the rubber material, reduce production costs, but also improve the tensile strength, constant elongation stress, wear resistance of the rubber, reduce the shrinkage rate of the product.
(3) Softening system: Gumalon resin in rubber can play a role in softening, reinforcing, dispersing, etc., in the regenerative rubber plug softener can choose Gumalon resin, improve the flexibility of the rubber, while improving the performance of the rubber.
(4) Styrene-butadiene rubber / EPDM recycled rubber compound has certain anti-aging properties, and it is necessary to further improve the aging resistance of the regenerative rubber plug, which can be used with antioxidants when designing the formula.
2. Refer to the recipe
100 parts of styrene-butadiene rubber, 25 parts of EPDM recycled rubber, 2.3 parts of sulfur, 4.1 parts of accelerator, 5 parts of zinc oxide, 1 part of stearic acid, 80 parts of clay, 10 parts of talc powder, 50 parts of calcium carbonate, 5 parts of Lide powder, 35 parts of gumlon resin, 1 part of antioxidant, a total of 318.4 parts.
Power plug manufacturers in the choice of recycled rubber to choose environmentally friendly, no impurities, stable indicators of the regeneration of rubber, in the actual production, according to the performance needs of the product to choose other recycled glue.