Study on Sealant based on Prefabricated Building ALC Panel

It is to study the effect of plasticizer types and amount to sealant's mechanical property, surface energy, base material pollution performance through preparing a one-component ultralow modulus silane-modified polyether sealant. The results show that with PPG as plasticizer, the prepared sealant has the lowest modulus, maximum surface free energy (25mN/m) and best base material pollution. It is shown in plasticizer amount's effect on sealant performance that: when the DINP additive amount is 120, the tensile modulus is the lowest and M110 is 0.15MPa; when the DINP additive is 80, The surface free energy is the maximum, which is 22mN/m; when the DINP additive is 40, the base material pollution is the best.