Study on synthesis of highly flexible liquid polysulfide rubber
Highly flexible liquid polysulfide rubber was synthesized by using highly flexible monomer and dichloroethyl acetaldehyde as polymerization monomers,and the molecular structure of the synthesized highly flexible liquid polysulfide rubber was characterized,and the effects of the dosage of highly flexible monomer,the polymerization conditions,the degree of crosslinking,and the molecular weight of polysulfide rubber on the performance of the polysulfide rubber products were investigated.The research results showed that when the amounts of highly flexible monomer and magnesium chloride were 20％and 8.2％of the total monomer mass,the crosslinking degree was 0.1％～0.5％and the stirring speed of polymerization reaction was 380 r/min,the highly flexible liquid polysulfide rubbers suitable for low modulus and high elongation sealants could be prepared.
high flexibilityliquid polysulfide rubbercopolymerizationsynthesis
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