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采用顺酐和二醇制得耐腐蚀不饱和树脂,再将其与由三羟甲基丙烷二烯丙基醚(TMPDE)、TDI和苯乙烯反应得到的含有气干性基团的预聚物接枝聚合得到气干性耐腐蚀不饱和树脂。研究了预聚物加入量对树脂气干性以及接枝聚合反应温度和时间对反应程度的影响,并测试了产品的耐腐性和力学性能。结果表明,自制的耐腐蚀不饱和树脂、TDI、TMPDE及苯乙烯的质量配比为10∶1∶1∶2,聚合反应温度75～85℃,反应时间2.0 h时得到的不饱和树脂性能最佳,无缺口冲击强度为7.56 kJ/m2,弯曲强度为71.7 MPa,弯曲模量为3.21 GPa,热变形温度为110℃,产品可耐强酸、强碱、强氧化介质的长期腐蚀,气干性好,固化优良。
The use of maleic anhydride and diol made of corrosion-resistant unsaturated resin, and then with the trimethylolpropane diallyl ether (TMPDE), TDI and styrene obtained by reaction of the air-drying group-containing prepolymer Graft polymerization obtained air-dried corrosion-resistant unsaturated resin. The effects of the prepolymer addition amount on the air-drying of the resin and the reaction temperature and time of the graft polymerization were studied. The corrosion resistance and mechanical properties of the product were tested. The results show that the properties of unsaturated resin made from self-made unsaturated resin, TDI, TMPDE and styrene are 10:1:1:1, the polymerization temperature is 75-85 ℃ and the reaction time is 2.0 h Good, unnotched impact strength of 7.56 kJ / m2, bending strength of 71.7 MPa, bending modulus of 3.21 GPa, heat distortion temperature of 110 ℃, the product can withstand acid, alkali, strong oxidizing medium long-term corrosion, air-dry Good, good curing.