以甲基三乙氧基硅烷为反应物,在盐酸催化下水解缩合,合成无色透明粘稠的液体有机硅氧烷预聚体,IR和<'1>H NMR表征证实其为目的产物;当有机硅氧烷预聚体与工业乙醇的体积比为1:1,以质量分数0.60%的NaOH-CH<,3>OH溶液为固化剂,加入该溶液0.05 mL,在30℃,预聚体交联固化时间为9 min;在50℃,预聚体交联固化时间为4 min;首次将有机硅氧烷预聚体,或它与聚乙烯醇(PVA20-88)的混合物用作化学固沙剂,形成的固结层具有较好的耐水性和较高的抗剪强度;当PVA20-88与有机硅氧烷预聚体的质量比为1:4时,粘聚力达到483.7 kPa,内摩擦角为68.39°,在160 h的紫外光照射下,具有很好的耐老化性.
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