Nano calcium carbonate for silane modified polyether sealant and preparation method of nano calcium carbonate

The invention provides nano calcium carbonate for a silane modified polyether sealant and a preparation method of the nano calcium carbonate, and relates to the field of nano calcium carbonate. The nano calcium carbonate for the silane modified polyether sealant is obtained by sequentially carrying out wet modification, dry modification and plasma treatment on the nano calcium carbonate and carrying out multiple modification treatments, and the prepared silane modified polyether sealant has excellent tensile strength and elongation at break, relatively low water absorption rate, good weather resistance and good weather resistance. Meanwhile, the flame retardant property is improved. 本发明提供一种用于硅烷改性聚醚密封胶的纳米碳酸钙及其制备方法，涉及纳米碳酸钙领域。本发明通过对纳米碳酸钙依次进行湿法改性、干法改性、等离子体处理，通过多次改性处理获得硅烷改性聚醚密封胶用纳米碳酸钙，并使其制备得到的硅烷改性聚醚密封胶具备优异的拉伸强度和断裂伸长率，较低的吸水率，同时提升阻燃性能。