Effect of Basic Polymers on Properties of Silane Modified Polyether Sealant
One component MS sealant was prepared using four different modulus of silane modified polyether(MS)resin as the base polymer,with plasticizers,reinforcing fillers,antioxidants,water removers,silane coupling agents,and catalysts.The effect of base polymers on the performance of the MS sealant was studied.The results show that when 40 phr of MS resin 3368T and 50 phr of MS resin Sax750 have been compounded as the base polymer,the MS sealant has the appearance of invisible parti-cles,the surface drying time of 13 min,the consistency of 7.5 cm,the curing depth in 24 h of 4 mm,the tensile strength of 2.1 MPa,the elongation at break of 706%,the Shore A hardness of 46,the tensile modulus of 1.62 MPa,the shear strength of 2.2 MPa,and the shear modulus of 0.35 MPa.
one componentsilane modified polyethersealantresincompounding
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