Application and preparation method of powdered styrene butadiene rubber friction material
A technology for powdered styrene-butadiene rubber and friction materials, which is applied in friction linings, mechanical equipment, gear transmission mechanisms, etc., can solve problems such as breakage, and achieve the effects of improved tensile strength, easy powderization, and high powder yield.
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[0021] Example 1:
[0022] Preparation method of powder styrene-butadiene rubber friction material, including the following raw materials: styrene-butadiene latex (SBR), kaolin (MO), polymer resin, aqueous calcium chloride solution, ammonia (NH 4 OH), styrene-butadiene latex (SBR) solids content of 21%, kaolin (MO) selected particle size as MO 1 The polymer resin is a free radical copolymerization product of vinyl monomer, and the concentration of calcium chloride aqueous solution is 5%, ammonia (NH 4 OH) concentration of 25%, kaolin (MO 1 As a reaction filler, polymer resin as a coating agent, and aqueous calcium chloride solution as a flocculant.
[0023] Preparation method of powder styrene-butadiene rubber friction material, comprising the following steps:
[0024] S1: In the polymerization kettle, water and styrene-butadiene latex (SBR) are added sequentially to stir and heat up, and an oxidant is added to crosslink the reaction to obtain a surface cross-linked styrene-butadi...
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