Through prepolymer method,one-component polyurea was synthesized based on polyoxypropylene glycol,polyoxytertramethylene glycol,and blend of them as soft segments,toluene diisocyanate (TDI) and oxazolidine latent curing agent as hard segments.The effect of polyether ratio of PPG and PTMG on the structure and performance of the polyurea was evaluated through FT-IR,DSC,water absorption,mechanical properties,surface drying time and dry time.The results showed that as the ratio of PTMG increased,the surface drying time,dry time and water absorption decreased,while tensile strength,elongation at break,bond strength and hardness increased gradually.When the ratio of PTMG ws 100%,the polyurea showed the best overall performance.
Wang Na
,
Li Bingqi
,
Xie Guitang
,
Zhang Jun
,
Chen Jianjun
,
Jiang Zhiguo
. Preparation and properties of PPG/PTMG based one-component polyurea[J]. New Chemical Materials, 2020
, 48(10)
: 143
-145
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.10.031
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