以一定分子量的硅烷封端聚醚为基础,添加增塑剂、纳米碳酸钙等辅助添加剂,制备得到了一系列的密封胶,并探讨了各组分对密封胶性能的影响。实验结果表明,不同分子量的硅烷封端聚醚对密封胶的拉伸强度有影响;纳米碳酸钙的种类和比例对密封胶的伸长率有明显的作用效果;除水剂会对密封胶的储存稳定性起到关键作用;以浙江皇马03系列硅烷封端聚醚为基胶,PPG2000为增塑剂,纳米碳酸钙(重质活性碳酸钙和纳米活性碳酸钙按比例混合)为填料,再添加除水剂、偶联剂和催化剂等原料制备得到的密封胶综合性能优良。
A series of sealants were prepared by adding plasticizer,nanometer calcium carbonate and other auxiliary additives based on silane terminated polyether(PE) with a certain molecular weight.The results showed that silane terminated PE with different molecular weight had an effect on the tensile strength of sealant.The type and proportion of nanometer calcium carbonate had obvious effect on the elongation of sealant.The water removal agent played a key role in the storage stability of sealant.Using Zhejiang Huangma 03 series silane terminated PE as base adhesive,PPG2000 as plasticizer,nanometer calcium carbonate (heavy active calcium carbonate and nanometer active calcium carbonate mixed in proportion) as filler,water removal agent,coupling agent and catalyst as raw materials,the sealant obtained had excellent comprehensive performance.
[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(3):7-9.
[2] 张虎极,韩胜利,王翠花,等.改性硅烷密封胶固化性能的研究[J].粘接,2011(10):49-53.
[3] 陆方姝,师力.硅烷改性聚醚密封剂的深层固化过程研究[J].中国胶粘剂,2014(7):10-16.
[4] 王天强,李冈效,王腾腾,等.纳米活性碳酸钙对室温硫化硅橡胶补强作用研究[J].有机硅材料,2017(3):154-159.
[5] 李伟明,王钰,周庶勤,等.超细活性碳酸钙补强脱酮肟型RTV-1硅橡胶的制备及性能[J].化学与黏合,2006(3):157-160.
[6] 宗营,姜旭峰,郝敬团,等.纳米碳酸钙表面改性方法[J].化工时刊,2015(8):29-31.
[7] 关兵峰,魏海捷,马国富,等.炭黑填充橡胶补强机理的研究进展[J].特种橡胶制品,2010(2):59-64.
[8] 陈家荣,马营,张剑.包装方式对单组分硅酮密封胶贮存稳定性的影响研究[J].中国建筑防水,2017(5):13-17.
[9] 金晶,徐晓秋,杨雄发,等.聚硅氧烷热稳定性研究进展[J].化工新型材料,2010(1):17-19.
[10] 宫艳强,杜明朋,李美江.甲氧基封端聚硅氧烷的制备与表征[J].杭州师范大学学报(自然科学版),2014(2):123-126.
[11] 陈权,石正金,潘守伟,等.硅烷改性聚醚密封胶性能研究[J].中国建筑防水,2018(13):23-26.
