UV固化聚酯型聚氨酯丙烯酸酯低聚物的制备研究  

Synthesis and characterization of UV-curable polyester urethane acrylate oligomer

作　　者：商武[1] 袁腾[1] 王邦清[1] 王锋[1] 胡剑青[1] 涂伟萍[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《热固性树脂》2013年第6期14-18,共5页Thermosetting Resin

摘　　要：以异佛尔酮二异氰酸酯(IPDI)、羟基特戊酸新戊二醇酯(ED204)、丙烯酸羟乙酯(HEA)为原料,通过本体聚合法,两步反应合成了聚氨酯丙烯酸酯低聚物(PUA),利用红外光谱(FTIR)对其结构进行了表征,表明得到了目标产物,并可UV固化。讨论了催化剂用量、反应温度及阻聚剂用量等对合成PUA低聚物的影响,研究表明,当初始反应温度为50℃、催化剂用量为0.1%、反应时间1 h,第二步反应温度为70℃、催化剂用量为0.15%、反应时间为5 h、阻聚剂对苯二酚的用量为0.3%时,制备的PUA低聚物性能最优。最后利用示差扫描量热(DSC)法分析了不同配比时低聚物的热行为,发现随着配比的增加,低聚物的玻璃化转变温度(Tg)先增加后降低。The urethane acrylate oligomer（PUA） was synthetized from two -step reaction by bulk polymerization using isophorone diisocyanate the ester （IPDI）, hydroxy pivalic acid neopentyl glycol ester （ED204） and hydroxyethyl acrylate（HEA） as raw materials. The structure of synthesized PUA was characterized by FTIR. The target product was obtained and the product was UV curable. The effecrts of catalyst amount, reaction temperature and polymerization inhibitor amount on the synthesis of PUA were investigated. The results showed that the syn- thesized PUA oligomers had optimal performance as the conditions as followed： initial reaction temperature 50 ~C, catalyst amount 0.1% , reaction time 1 h and the second step reaction temperature 70 ~C, catalyst a- mount 0. 15 % , reaction time 5 h, polymerization inhibitor amount 0. 3 % （ based on hydroquinone mass）. Finally the thermal behavior of oligomers with different ratios were analyzed by differential scanning calorimeter（DSC）. The result showed that the glass transition temperature （ T ） of the oligomer was increased firstly and then de- creased with the increasing of ratio.

关 键 词：聚酯 聚氨酯丙烯酸酯 低聚物 光固化 制备 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TQ325.7