Chain alkyl phosphinate superpolymer and preparation method and application thereof
A technology of hydrocarbyl phosphinate and high polymer, which is applied in the field of flame retardant polymer moldings and flame retardant polymer molding compositions. And other problems, to achieve the effect of good mechanical properties
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Embodiment 1
[0037] Firstly, chain aluminum ethylene phosphinate polymer is prepared. To this end, 106g (1.0mol) of sodium hypophosphite monohydrate was dissolved in 400g (380mL) of acetic acid and transferred to a 1L jacketed container, 62g of ethylene glycol was added, and the reaction temperature was controlled at 80-90°C. Add 0.01 mol of initiator (ethylene glycol peroxide) under stirring, control the rate of addition of the initiator, drop it in 3 hours, continue to react the mixture for 5 hours, then add 222 g (0.333 mol) of aluminum sulfate octadecahydrate, and the mixture is heated The reaction was continued for 6 hours under reflux, cooled, filtered, washed with a small amount of distilled water, and dried at 105°C.
[0038] The product is a chain aluminum ethylene phosphinate polymer (n=10, m=3), with a phosphorus content of 30.3% and a weight of 93g.
Embodiment 2
[0040] First, a chain-like aluminum polymer of methylene phosphinate is prepared. To this end, dissolve 106g (1.0mol) of sodium hypophosphite monohydrate in 400g (380mL) of acetic acid and transfer it to a 1L jacketed container, add 30g of formaldehyde, and control the reaction temperature at 60-90°C. Add 0.01 mol of the initiator (hydrogen peroxide), control the rate of adding the initiator, dropwise add in 3 hours, continue the reaction of the mixture for 5 hours, then add 222 g (0.333 mol) of octadecahydrate aluminum sulfate, and continue to heat the mixture under reflux. React for 6 hours, cool, filter, wash with a small amount of distilled water, and dry at 105°C.
[0041]The product is a chain aluminum methylene phosphinate polymer (n=10, m=3), with a phosphorus content of 35.6% and a weight of 82g.
Embodiment 3
[0043] According to the general description of "Flame Retardant Polymer Molding Compositions and Polymer Moldings Production, Processing, and Testing", a composition consisting of 100% by weight polybutylene terephthalate (PBT) was extruded on a twin-screw The extruder is compounded at 220-260°C to obtain a polymer molding composition. After drying, the molding composition is processed in an injection molding machine at a melt temperature of 230 to 270° C. to give polymer moldings.
[0044] The test sample was measured according to the UL 94 standard, and the result was ncl.
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