文献类型：期刊文献

中文题名：不饱和聚酯树脂低温固化收缩影响因素

英文题名：Influencing Factors in Low Temperature Curing Shrinkage of Unsaturated Polyester Resin

作者：宗丹丹[1];张衍[1];陈继荣[2];刘育建[1]

机构：[1]华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海200237;[2]上海众挚化工科技有限公司,上海201612

年份：2021

卷号：39

期号：1

起止页码：77

中文期刊名：材料科学与工程学报

外文期刊名：Journal of Materials Science and Engineering

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：中央高校基本科研业务费专项资金资助项目(222201717001)

语种：中文

中文关键词：低收缩剂;不饱和聚酯树脂;线收缩率;低温固化

外文关键词：Low shrinkage additives;Unsaturated polyester resin;Linear shrinkage;Low curing temperature

摘要：通过正交试验设计,探究了固化温度、固化剂和促进剂含量、低收缩剂(LPA)种类、含量五种因素对邻苯型不饱和聚酯(UPR)固化线收缩率的影响。方差分析的结果表明:当显著水平为95%时,LPA含量对UPR的线收缩率影响最大,所对应的F值高达8.362,超过了分位数。体系的线收缩率随LPA含量的增加而降低。然而,LPA也会同时影响树脂的力学强度。与未改性UPR相比,当LPA-4含量为6%时,体系的线收缩率由2.148%大幅下降至0.531%,弯曲强度保持率达到80%,冲击强度提高了95%,综合性能较好。
How the five factors,curing temperature,content of curing agent and accelerator,the type of low profile additives(LPA)and its content,influence the linear shrinkage of o-benzene type unsaturated polyester resins(UPR)was investigated by using orthogonal test method.The result of variance analysis shows that the F value of LPA content reaches 8.362 when the significant level is 95%.It is much larger than quantile,indicating its remarkable influence on the linear shrinkage of UPR.And the linear shrinkage reduces with the increase of LPA addition.However,the mechanical behavior of UPR also changes caused by the LPA addition.When the amount of LPA-4 reaches 6%,linear shrinkage of the resins decreases from 2.148%to 0.531%,the retention rate of bending strength remain about 80%,while the impact strength increases by 95%compared with that of unmodified resins.