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北京市建委和科委于1987年元月13日在北京石膏板厂共同主持了由北京石膏板厂承担的有机硅SB-2防水石膏板的市级鉴定。鉴定委员会和与会代表一致认为:作为纸面石膏板芯材的有机硅浮液防水剂的研制是成功的,并经对纸面石膏板表面用氯偏乳液外涂处理,可在保证纸面石膏板强度和其他性能情况下,降低
The Beijing Municipal Construction Commission and the Science and Technology Commission co-chaired the Beijing-based gypsum board factory on January 13th, 1987 in the municipal appraisal of the silicone SB-2 waterproof gypsum board undertaken by the Beijing Gypsum Board Factory. The appraisal committee and the participants agreed that the development of a silicone floatation liquid repellent as a core material for paper-based gypsum plasterboard was successful, and that the surface of the gypsum board was treated with a partial emulsion of chlorine emulsion to ensure the plastering of the paper surface. Reduction in board strength and other performance conditions