In this article,the effects of nano calcium carbonate,heavy calcium and their surface treatments on the performance of single component silane modified polyether sealant after immersion are investigated.The results show that the combination of nano calcium carbonate and heavy calcium can improve the appearance and processing performance of the sealant,and obtain a more uniform and delicate sealant with better extrudability;the comprehensive performance advantage of the sealant prepared by the combination of stearic acid modified nano calcium carbonate and stearic acid modified heavy calcium are obvious.
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