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PRIMER FOR STRUCTURE SURFACE LAYER, TUNNEL LINING SEGMENT, TUNNEL, AND METHOD FOR MANUFACTURING TUNNEL LINING SEGMENT
PRIMER FOR STRUCTURE SURFACE LAYER, TUNNEL LINING SEGMENT, TUNNEL, AND METHOD FOR MANUFACTURING TUNNEL LINING SEGMENT
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机译:用于结构表面层,隧道衬砌段,隧道的底料以及制造隧道衬砌段的方法
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摘要
PROBLEM TO BE SOLVED: To provide a primer for structure surface layer capable of preventing swelling of coated film even if the film is exposed to alkaline component.;SOLUTION: Primer according to the present invention contains polyurethane resin having a silanol group in molecules. It is preferable that the polyurethane resin be a reactant of polyisocyanate component, polyol component and hydrolyzable silicon group-containing compound. It is preferable that polyisocyanate component be alicyclic diisocyanate, and polyol component be polyether-based or polyester-based component. Additionally, it is preferable that the primer further contain strong basic tertiary amine. It is preferable that the tunnel lining segment be obtained by coating a lining material having viscosity of 5 Pa s or more (23°C) on a surface of the primer layer after coating and drying the primer at least on a part of a tunnel lining segment body.;COPYRIGHT: (C)2015,JPO&INPIT
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