以端硅烷基聚醚(MS)为基础聚合物,以改性后的埃洛石(m-HNTs)为填料,并加入各种助剂,最终制备了埃洛石改性聚醚密封胶。通过对埃洛石的改性和对其掺量的精细调控,系统研究了m-HNTs在MS基体中的分散情况以及对MS基体力学性能的影响。结果表明:m-HNTs可均匀分布在MS基体中;当埃洛石掺量增加时,所需表干时间显著增加;当埃洛石掺量为8%时,埃洛石改性聚醚密封胶的力学性能达到最大。
Halloysite modified polyether sealants were prepared by the combinative addition of the terminal silicyl polyether (MS) as the base polymer,the modified halloysite (m-HNTs) as the filler,and various additives.Subsequently,the dispersion of m-HNTs in MS matrix and the mechanical properties of MS matrix were systematically studied by finely tailoring the modification and amount of halloysites.The results shown that m-HNTs could be uniformly distributed into the MS matrix;the required surface drying time was significantly increased with the increase of the amount of halloysites.When the amount of halloysites was 8%,the mechanical properties of the sealants were optimized.
[1] 胡彦,梅日国,安振国,等.无机填料对硅橡胶力学性能的影响[C].北京:第二十届学术年会暨胶粘剂、密封剂技术发展研讨会论文集,2011.
[2] 黄应昌,吕正云.弹性密封胶与胶粘剂[M].北京:化学工业出版社,2003:220.
[3] 李吉明,薛纪东,钟汉荣.单组分湿固化硅烷封端聚氨酯密封胶的制备及性能研究[J].化学与黏合,2012,34(1):15.
[4] 张同标,倪雅,李建军,等.硅烷改性聚醚密封剂的制备及应用[J].中国建材科技,2011(1):25.
[5] 赵苗,吴玉昆,高之香,等.硅烷改性聚醚密封胶的研究进展[J].粘接,2016,37(12):60.
[6] 黄活阳,何晓军,冯炬佳.环保型有机硅改性聚醚密封胶的研制[J].化学与黏合,2015,37(2):114.
[7] 关兵峰,魏海捷,马国富.炭黑填充橡胶补强机理的研究进展[J].特种橡胶制品,2010,31(2):60-63.
[8] 蔡海涛,赵瑞,王翠花,等.高强度硅烷改性聚醚密封胶的制备及性能研究[J].粘接,2016,37(8):40-45.
[9] 杨霞.预制装配式建筑混凝土板接缝用密封胶性能研究[J].中国建筑防水,2012,29(9):10-16.
[10] 李义博,陈中华.杂化STP-E弹性密封胶固化性能的研究中国建筑防水,2015(10):20-30.
[11] 幸光新太郎,王俊.建筑用改性硅酮密封胶发展简介[J].中国建筑防水,2012(22):41,43.
[12] 倪雅,卫丽娟,孟凡浩,等.MS密封剂在钢结构桥梁防护中的应用[J].工业建筑,2010(S1):830-840.
[13] 赖振峰,王万金,贺奎,等.装配式建筑外墙拼接缝用密封胶的选择探讨[J].中国建筑防水,2016(14):18-21.
[14] Rekondo A,Fern Ndez-Berridi M J,Irusta L.Photooxidation and stabilization of silanised poly(ether-urethane) hybrid systems[J].Polymer Degradation & Stability,2007,92(12):2173-2180.
[15] Lehmann P,Johnston R R.Chemical durability of silylated polyuret hane-based formulations[J].Adhesive Age,1998,41(1):28-32.
[16] Feng T M,Waldman B A.Silyated urethane polymers enhance properties of construction sealants[J].Adhesives Age,1995,38(4):30-32.
[17] Petrie E M.MS polymers in “hybrid” sealants[J].Adhesives Org,2010(2):1-8.
[18] Yamaguchi I,Fujita M,Iwakiri H.Curable composition:US6486289[P].2002-11-26.
[19] Lucas G M.Moisture curable sealants:EP6664323[P].2003-12-16.
[20] 徐晓明,何江,吴军艳,等.硅烷偶联剂对中性透明有机硅密封胶粘接性能的影响[J].粘接,2013(5):41-43.
[21] 李赟,王伊珺,肖文静,等.不同催化体系对单组分端硅烷基聚醚密封剂性能的影响[J].化学与粘合,2014,36(5):330-332.
[22] Wang X,Kubish S D,Briddell B J.Silylated polyurethanes for ad hesives and sealants with improved mechanical properties:US6498210[P].2002-07-14.
[23] Shanid M,Hashim S A.Effect of surface roughness on the strength of cleavage joints[J].International Journal of Adhesion & Adhesives,2002,22(3):235-244.
[24] 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.
[25] 李正梅,钱志国,翟剑峰,等.硅烷改性聚醚密封剂的应用和制备进展[C].北京:北京粘接学会学术年会暨粘接剂、密封剂技术发展研讨会,2014.
[26] De Buyl F.Silicone sealants and structural adhesives[J].International Journal of Adhesion and Adhesives,2001,21(5):411-422.
[27] Takatsuki Y N,Takatsuki S O.Moisture-curable one-pack-type urethane adhesive composition:US6657035B1[P].2003-12-02.
[28] Bachon T,Gonzalez S,Zander L.Curable compositions containing silylated polyether block polymer-based polyurethane:US20110071254[P].2011-03-24.
[29] Tatley R D,Schneider T J.Composition,method of use,and Structural barrier system:US20110072747[P].2011-03-31.
