Flame retardant thermal insulation polystyrene material and preparation method thereof
A technology of polystyrene, flame retardant and heat preservation, applied in the field of heat preservation materials, can solve the problems of unfavorable EPS board application, etc., and achieve the effects of increasing stability and oxidation resistance, increasing mechanical properties, and increasing smoke suppression
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[0022] Reference figure 1 , The method for preparing a flame-retardant and heat-insulating polystyrene material proposed by the present invention includes the following steps:
[0023] S1. Preparation of polystyrene particles: mix water, polyvinyl alcohol solution, and tricalcium phosphate to obtain solution A; disperse styrene and silica aerogel uniformly by ultrasonic, add triphenyl phosphate and ammonium polyphosphate and mix well , Add di-tert-butyl peroxide and mix well to obtain solution B; mix solution A and solution B evenly, heat up, keep warm and stir, cool down, wash, and air-dry to obtain polystyrene particles;
[0024] S2, pre-expansion and maturation: take the polystyrene particles obtained in S1, adjust the vapor pressure to 0.3-0.5MPa, keep it for 45-55s, take it out, and place it at room temperature for 20-24h to obtain matured particles;
[0025] S3. Foam molding: add water-soluble silicone oil to S2 to obtain mature particles, stir at 500-700r / min for 10-20min, ad...
Example Embodiment
[0027] Example 1
[0028] A flame-retardant and heat-insulating polystyrene material, whose raw materials by weight include: 120 parts of styrene, 200 parts of water, 120 parts of 4wt% polyvinyl alcohol aqueous solution, 3 parts of tricalcium phosphate, and 1.5 parts of triphenyl phosphate. , 2.5 parts of ammonium polyphosphate, 5 parts of silica aerogel, 1 part of di-tert-butyl peroxide, 4 parts of water-soluble silicone oil, 10 parts of pentane, 100 parts of compound flame retardant, 3 parts of benzenesulfonyl chloride , 6 parts of isopropyl triisostearate titanate, 20 parts of fumed white carbon black, 3 parts of rare earth stabilizer, 2 parts of Ca / Zn composite stabilizer, 2645 parts of antioxidant;
[0029] Among them, the preparation method of the compound flame retardant is: adding 15 parts of high polyammonium phosphate, 10 parts of sodium silicate, and 5 parts of montmorillonite to 70 parts of thermosetting phenolic resin by weight parts, stirring at a speed of 400r / min fo...
Example Embodiment
[0034] Example 2
[0035] A flame-retardant and heat-insulating polystyrene material, the raw materials of which include 80 parts by weight of styrene, 400 parts of water, 80 parts of 6wt% polyvinyl alcohol aqueous solution, 5 parts of tricalcium phosphate, and 1 part of triphenyl phosphate. , 4.5 parts of ammonium polyphosphate, 2 parts of silica aerogel, 3 parts of di-tert-butyl peroxide, 2 parts of water-soluble silicone oil, 18 parts of pentane, 80 parts of compound flame retardant, 6 parts of benzenesulfonyl chloride , 4 parts of isopropyl triisostearate titanate, 30 parts of fumed white carbon black, 2 parts of rare earth stabilizer, 3 parts of Ca / Zn composite stabilizer, 2643 parts of antioxidant;
[0036] Among them, the preparation method of the compound flame retardant is: adding 10 parts of high polyammonium phosphate, 7 parts of sodium silicate, and 3 parts of montmorillonite to 60 parts of thermosetting phenolic resin by weight parts, stirring at a speed of 600r / min fo...
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