Best Low modulus polyurethane sealant construction
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Construction method of low modulus two-component polyurethane building sealant
1) basic treatment: steel wire brush, cotton yarn and other tools to clean up the pulp, dust, etc., if there is an organic solvent to scrub clean, keep the surface dry, clean.
2) packing material: in order to satisfy the requirement of the design, the filling material is filled in the gap cavity.
3) filled polyurethane sealing paste products: according to the ratio of A:B=1:1.5, mixed evenly, add caulking gun or putty knife from top to bottom, or from the front to the back of filling; filling the requirements of full, to prevent the formation of bubbles and holes; filling is completed, in the sealing paste table dry before use. Putty knife out of plane or cambered surface and the excess sealing material is scraped away.
4) in order to get a better interface bonding effect, can use the appropriate primer.