摘要
以乙烯-醋酸乙烯酯(EVA)为基体,采用熔融接枝法接枝马来酸酐(MAH),得到乙烯-醋酸乙烯酯马来酸酐接枝共聚物(EVA-g-MAH)。通过红外光谱和核磁共振氢谱等方法对纯化后的接枝产物的分子链结构进行表征,结果表明,MAH已成功接枝到EVA主链上。研究了EVA种类、引发剂种类、反应温度、引发剂份数等条件对EVA熔融接枝MAH接枝率的影响,得到了接枝率在0.06%~1.40%范围内的一系列接枝产物,总结了接枝率随这4种反应条件变化的规律。初步分析了EVA-g-MAH作为膜状胶黏剂在木板黏合中的应用,EVA熔融接枝MAH后,粘接强度从约0.3 MPa提高至约1.5 MPa,这表明熔融接枝MAH能够大幅提高EVA胶膜作为膜状胶黏剂的粘接强度。
The EVA-g-MAH was obtained by grafting MAH onto EVA via melt grafting.The molecular chain structure of the purified graft product was analyzed by NMR and IR.The results proved that the MAH monomer was successfully grafted onto the molecular chain of EVA.The effects of EVA type,initiator type,reaction temperature and number of initiator on the graft ratio of EVA melt graft MAH were investigated,a series of graft products with graft ratio ranging from 0.06%to 1.40%were obtained,the variation of grafting rate with these reaction conditions has been summarized.The application of EVA-g-MAH as film adhesive in wood board bonding was preliminarily explored.After EVA melt-grafted MAH,the adhesive strength increased from about 0.3 MPa to about 1.5 MPa,which proved that melt-grafted MAH could greatly improve the adhesive strength of EVA film as a film adhesive.
作者
张宪君
王莉
王俊程
赵季若
ZHANG Xianjun;WANG Li;WANG Juncheng;ZHAO Jiruo(Key Laboratory of Rubber-plastics(QUST),Ministry of Education,Qingdao University of Science and Technology,Qingdao,Shandong 266042,China)
出处
《塑料》
CAS
CSCD
北大核心
2021年第3期147-151,共5页
Plastics
关键词
乙烯-醋酸乙烯酯
熔融接枝
接枝率
膜状胶黏剂
木材黏合
ethylene-vinyl acetate copolymer(EVA)
melt grafting
grafting ratio
film adhesive
wood adhesive
