| 摘要 |
PURPOSE: A polyurethane anchor composition for rapid setting is provided, which is used to fix an anchor bolt to the hole punched on the rock and is improved in the adhesive strength and the imprint strength. CONSTITUTION: The polyurethane anchor composition comprises 40.55 wt% of polyester polyol; 2.03 wt% of a cross-linking agent; 0.75 wt% of triethylene diamine; 0.15 wt% of dibutyl tin dilaurate; 0.15 wt% of a silicon oil; 8.92 wt% of a reinforcement or a filler; and 47.45 wt% of polymeric diphenyl methane-4,4'-diisocyanate. The filler is preferably CaCO3. Preferably the polyester polyol is prepared by the polycondensation of one or more diacid, and the diacid is selected from the group consisting of phthalic anhydride, isophthalic acid, terephthalic acid, adipic acid and glycols.
|
