Wear-resisting enhancement polyurethane polystyrene foam for switch cabinet sealing
A technology of polyurethane foam and switchgear, which is applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of unsatisfactory safety, low production efficiency, poor heat resistance, etc., and achieve Good heat insulation effect, long service life and good wear resistance
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[0014] A wear-resistant reinforced polyurethane foam for switch cabinet sealing, which is made of the following raw materials in parts by weight (kg): 150 diphenylmethane diisocyanate, 100 trihydroxypolyoxypropylene ether, 100 castor oil, and glycerin Alcohol 5, diethyl phosphate 40, 1mol / L sodium hydroxide solution, diatomaceous earth 13, distilled water 5, triethanolamine 2, dibutyltin dilaurate 3, sorbitan ester 3, silicone resin polyether emulsion 3. Silicon carbide 3. Fumed silica 2. EVA emulsion 2. Polyvinyl alcohol 2. Nickel powder 1. Deionized water in proper amount.
[0015] The wear-resistant reinforced polyurethane foam glue used for switchgear sealing is made by the following specific steps:
[0016] (1) Pour trihydroxypolypropylene oxide ether, castor oil and glycerin into the reaction kettle, heat it in a constant temperature water bath to 85°C, stir and react at a speed of 150 rpm for 60 minutes, then cool down to 40°C, slowly drop Add diethyl phosphate, add it...
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