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    • 9. 发明专利
    • Coating liquid for forming insulation buffering layer on inner wall of tunnel
    • 用于在隧道内壁形成绝缘层的涂层液
    • JPS59193948A
    • 1984-11-02
    • JP6840383
    • 1983-04-20
    • Kowa Kasei KkShowa Highpolymer Co Ltd
    • USAMI TAMIOTSUKIYAMA FUMITOSHIHARADA AKIOINADA NAGAHIRO
    • C09D5/00C08L23/00C08L23/08C08L31/04C08L33/00C08L33/02E21D11/10
    • PURPOSE: To provide a coating liquid composed of an emulsion of ethylene/ vinyl acetate copolymer, a pigment, a filler and a thickener, and capable of forming an odorless coating film having excellent water-resistance, strength, etc. between the sprayed inner wall applied after the excavation of bedrock and the concrete layer covering the wall.
      CONSTITUTION: (A) An aqueous emulsion obtained by the emulsion polymerization of 40W5pts.wt. of ethylene, 60W95pts.wt. of vinyl acetate, and 60W0pts.wt. of a vinyl ester of a 9W11C branched fatty acid is compounded with (B) a pigment and a filler free from hardening tendency with water and (C) a tackifier to obtaon the objective coating liquid having viscosity of 20,000W150,000cps at 30°C measured by a BH-type rotary viscometer at 10rpm. The ratio of the viscosity measured by the BH-type viscometer at 30°C and 2rpm to the viscosity measured at 20rpm is 3.0W8.0, and the volume fraction of the solid resin component of the component (A) is ≥40%.
      EFFECT: The liquid can be applied without causing sagging, and the obtained coating film is resistant to falling-off. Since the coating film has opaque white color, the uncoated part can be discerned easily.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:提供由乙烯/乙酸乙烯酯共聚物,颜料,填料和增稠剂的乳液组成的涂布液,并且能够形成在喷雾的内壁之间具有优异的耐水性,强度等的无味涂膜 应用于基岩开挖和覆盖墙体的混凝土层。 构成:(A)乳液聚合得到的水乳液为40-5pts.wt。 的乙烯,60-95pts.wt。 的乙酸乙烯酯,和60-0pts.wt。 的9-11C支链脂肪酸的乙烯基酯与(B)颜料和不含水的硬化趋势的填料混合,和(C)增粘剂,使粘度为20,000-150,000cps的目标涂布液在30℃ 通过BH型旋转粘度计以10rpm测量。 通过BH型粘度计在30℃和2rpm下测得的粘度与在20rpm下测得的粘度之比为3.0-8.0,组分(A)的固体树脂组分的体积分数> 40% 。 效果:可以施加液体而不引起下垂,并且所得涂膜耐脱落。 由于涂膜具有不透明的白色,因此可以容易地辨别未涂布的部分。