ADHESIVE COMPOSITION FOR BONDING TOGETHER MINERAL WOOL PLATES

摘要

FIELD: adhesive compositions. SUBSTANCE: the invention makes it possible to improve the procedure of applying a composition, improve adhesion strength up to 0.15-0.18 kH/m and improve light resistance of the glue seam up to 9 or 10 days. The composition comprises (wt %): 8.0-12.0 polychloroprene rubber; 1.8-3.4 indenecoumarone resin; 0.79-1.57 a filler; 0.3-2.2 melamine-formaldehyde resin; 0.4-1.4 alkyd resin; and a solvent, the balance. The composition is prepared by rolling the composition on cooling rolls for 5 to 10 minutes, adding magnesium oxide and rolling for another 5 to 10 minutes, adding zinc oxide, rolling for another 5 minutes, taking the rubber off the rolls, cutting it through and feeding it into an adhesive agitator together with toluene or ethyl acetate. After the rubber has fully swollen, indene-coumarone resin, melamine-formaldehyde and alkyd resins or varnish based thereon are added and a third portion of the calculated amount of methylene chloride is introduced. After the mixture becomes homogeneous, the remaining part of methylene chloride is added and the whole is stirred for 20 to 30 minutes. EFFECT: improved properties of the adhesive composition. 1 tbl