Natural rubber is a typical non-polar rubber with good electrical insulation performance. The finished product used to produce power rubber plugs has good elasticity, electrical insulation and water resistance; styrene butadiene rubber has better wear resistance, heat resistance and aging resistance. The main components of tire reclaimed rubber are natural rubber, styrene butadiene rubber and carbon black. The effective rubber hydrocarbon content is about 30%, and it has good compatibility with natural rubber and styrene butadiene rubber. In actual production, reclaimed tire rubber can be combined with natural rubber or styrene butadiene rubber in an appropriate ratio to produce power rubber plugs, reducing raw material costs.
1. Reference formula for rubber plug
Compared with natural rubber and styrene-butadiene rubber, tire reclaimed rubber has a stable state. It can be used together with natural rubber or styrene-butadiene rubber to produce power rubber plugs. 2LLYY918 products have better aging resistance, stable dimensions, and are less likely to crack during use. It is not easy to shrink and deform, has good performance and long service life.
(1) Formula without tire reclaimed rubber: 100 parts of natural rubber, 2.2 parts of sulfur, 4 parts of zinc oxide, 2 parts of stearic acid, 2.5 parts of accelerator, 0.5 parts of white wax, 2 parts of antioxidant, 235 parts of light calcium, oil 10 parts of paste, 30 parts of engine oil, self-adjusting pigments.
(2) Natural rubber + tire reclaimed rubber: 100 parts of natural rubber, 50 parts of tire reclaimed rubber, 4.5 parts of sulfur, 3 parts of accelerator, 1.5 parts of white wax, 2.5 parts of antioxidant, 230 parts of light calcium, 40 parts of clay, ointment 12 parts, 16 parts of Coumarone, 7 parts of asphalt, self-adjusting pigment.
(3) SBR + tire reclaimed rubber: 100 parts of styrene butadiene rubber, 50 parts of tire reclaimed rubber, 2.5 parts of sulfur, 5 parts of zinc oxide, 1 part of stearic acid, 2.8 parts of accelerator, 2 parts of white wax, 1.5 parts of antioxidant Parts, 80 parts of light calcium, 50 parts of clay, 18 parts of Coumarone, 8 parts of asphalt, self-adjusting pigment.
2. Formula design of power plug for tire reclaimed rubber production
When using reclaimed tire rubber and natural rubber or styrene butadiene rubber to produce rubber plugs, the amount of reclaimed tire rubber can be determined according to the specific performance requirements of the plug and the indicators of reclaimed rubber. When designing the rubber plug production formula containing tire reclaimed rubber, it is necessary to appropriately reduce the amount of calcium carbonate. If necessary, use clay to further improve the surface smoothness of the rubber plug. The finished product has high viscosity, high stiffness and low shrinkage; appropriately adjust the vulcanizing agent, The amount of accelerator can improve the mechanical strength of the rubber plug; select the appropriate pigment to adjust according to the color of the rubber plug.
Design natural rubber/tire reclaimed rubber or styrene-butadiene rubber/tire reclaimed rubber power plug formula, rubber product manufacturers also need to adjust the softening system appropriately, and coordinate the tensile strength, hardness, elongation at break, constant tensile stress and other indicators of the plug product Select the appropriate antioxidant to delay the aging time of rubber plugs, etc.; The editor will continue to discuss with you the production process (mainly including mixing and vulcanization) when using tire reclaimed rubber to produce rubber plugs.
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