PDF (1408K)
摘要
以单质铜(Cu0)为还原剂,采用电子转移生成催化剂原子转移自由基聚合(ARGET ATRP)合成了丙烯酸乙酯-co-3-甲基丙烯酰氧基丙基甲基二甲氧基硅烷(DMMSPMA)共聚物[P(EA-co-DMMSPMA)]及其湿固化膜,研究了P(EA-co-DMMSPMA)分子量增加以及DMMSPMA含量对P(EA-co-DMMSPMA)湿固化膜性能的影响。研究结果表明:随着P(EA-co-DMMSPMA)分子量增大,湿固化膜的拉伸强度增加,断裂伸长率略有上升,玻璃化转变温度升高。在P(EA-co-DMMSPMA)分子量为10000,DMMSPMA含量为25%(wt,质量分数)条件下,其拉伸强度为2.09MPa,断裂伸长率为33%,玻璃化转变温度为4.18℃。
Abstract
(Ethyl acrylate-co-3-methacryloyloxypropylmethyldimethoxysilane) copolymer [P(EA-co-DMMSPMA)] and their moisture cured crosslinked films were synthesized via activators regenerated by electron transfer for atom transfer radical polymerization (ARGET ATRP) using copper (Cu0) as a reducing agent.The effects of increase in the molecular weight of P(EA-co-DMMSPMA) and the content of 3-methacryloyloxypropylmethyldimethoxysilane (DMMSPMA) on the properties of moisture cured crosslinked films were investigated.The results showed that with the increment of molecular weight of P(EA-co-DMMSPMA),the tensile strength of films increased,the elongation at break slightly increased,and the glass transition temperature increased.When the molecular weight of P(EA-co-DMMSPMA) was 10000 and the content of DMMSPMA was 25wt% (wt,mass fraction),the tensile strength was 2.09MPa,the elongation at break was 33%,and the glass transition temperatures was 4.18℃.
关键词
丙烯酸乙酯
/
3-甲基丙烯酰氧基丙基甲基二甲氧基硅烷
/
湿固化
/
力学性能
/
ATRP
Key words
ethyl acrylate
/
3-methacryloyloxypropylmethyldimethoxysilane
/
moisture curing
/
mechanical property
/
atom transfer radical polymerization
ATRP法合成(丙烯酸乙酯-co-3-甲基丙烯酰氧基丙基甲基二甲氧基硅烷)共聚物及其性能研究[J].
化工新型材料, 2019, 47(4): 171-174 DOI:
[1] 蒋海成,张文龙,于昊宇,等.硅烷封端聚合物树脂研究进展[J].化工新型材料,2016,44(3):7-9.
[2] Chew M,Zhou X.Enhanced resistance of polyurethane sealants against cohesive failure under prolonged combination of water and heat[J].Polymer Testing,2002,21(2):187-193.
[3] 宣美福.硅改性聚醚制备技术进展[J].黎明化工,1997(4):6-9.
[4] Buyl F D.Silicone sealants and structural adhesives[J].International Journal of Adhesion & Adhesives,2001,21(5):411-422.
[5] 黄活阳,何晓军,冯炬佳.低模量改性有机硅密封胶的制备与性能研究[J].广东化工,2014,41(5):63-64.
[6] Rekondo A,Fernandez-Berridi M J,Irusta L.Synthesis of silanized polyether urethane hybrid systems,study of the curing process through hydrogen bonding interactions[J].European Polymer Journal,2006,42(9):2069-2080.
[7] 张同标,倪雅,田明明,等.硅烷改性聚合物密封剂的研究进展[J].化工时刊,2010,24(12):51-55.
[8] Percec V,Barboiu A B,Sluis M V D.Self-regulated phase transfer of Cu2O/bpy,Cu(0)/bpy,and Cu2O/Cu(0)/bpy catalyzed “living” radical polymerization initiated with sulfonyl chlorides[J].Macromolecules,1998,31(12):4053-4056.
[9] Anastasaki A,Nikolaou V,Nurumbetov G,et al.Cu(0)-mediated living radical polymerization:a versatile tool for materials synthesis[J].Chemical Reviews,2016,116(3):835-877.
[10] Du J,Chen Y.Atom-transfer radical polymerization of a reactive monomer 3-(trimethoxysilyl)propylmethacrylate[J].Macromolecules,2004,37(17):6322-6328.
[11] 胡勤斌,陈世龙,聂华英.单组分硅烷化聚氨酯密封胶的研制[J].中国胶粘剂,2005,14(8):31-34.
