Indexed by:期刊论文

Date of Publication:2022-06-29

Journal:合成树脂及塑料

Issue:6

Page Number:17-21

ISSN No.:1002-1396

Abstract:The suspension polymerization of styrene was carried out in water medium with tertiary calcium phosphate (TCP)/hydroxyethyl cellulose (HEC) as compound dispersion system and benzoyl peroxide (BPO) as initiator. The authors studied the influences of amount and ratio of the compound dispersant, kinds and amount of initiators, temperature of polymerization, stirring speed, mass ratio of water to oil and impurity on the suspension polymerization, and analyzed the relative molecular mass and its distribution of the resultant polystyrene(PS) resin. The results show that the resin takes the shape of particles with moderate size and 84.93% of the particles have the sizes centralized in the range of 830-2360 ��m, the transparency of the resin particles is pretty high and the PS yield can reach 98.96% when the mass ratio of the compound dispersant to styrene, TCP to HEC, BPO to styrene and water to styrene is about 0.24%, 1:1, 0.80%,(2-3):1 respectively, the stirring speed is 350 r/min and the temperature of polymerization is (90��1)��C.

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