Surface modified nano calcium carbonate and polychloroethylene plastisol thereof

Abstract

The invention provides nano calcium carbonate with surface modification and polyvinyl chloride plastic sol thereof. Calcium oxide and carbon dioxide gas are used as raw material to synthesize the nano calcium carbonate; and after carbonizing reaction, the nano calcium carbonate is further subjected to surface modification treatment by taking carboxyl end group amilan polyamide resin as surface modifier, wherein the resin is prepared by condensation of fatty group polyprotic acid and fatty group polybasic amine, and the acid value is controlled between 50 and 500mgKOH / g. The invention also provides the polyvinyl chloride plastic sol added with the nano calcium carbonate, which comprises the following components by weight percentage: 10 to 25 percent of polyvinyl chloride resin, 0.2 to 5 percent of stabilizer, 20 to 45 percent of plasticizer, 0.2 to 8 percent of drying agent, 20 to 50 percent of common calcium carbonate filler, and 10 to 40 percent of nano calcium carbonate. Compared with the prior plastic sol, the polyvinyl chloride plastic sol, after solidification by a coating film, greatly improves impact resistance, and has good, anti-sag performance and adhesive force to electrophoresis of the polyvinyl chloride plastic sol.

Description

【Technical field】

[0001] The invention relates to a nano calcium carbonate and polyvinyl chloride plastisol, in particular to a surface-modified nano calcium carbonate and a polyvinyl chloride plastisol using the component. 【Background technique】

[0002] Nano-calcium carbonate refers to calcium carbonate with a particle size between 1-100 nanometers, which can be used as a filler or reinforcing agent for coatings, plastics, rubber, polymer resins, etc. to improve product performance. Usually the surface of nano-calcium carbonate particles is hydrophilic and oleophobic, and nano-calcium carbonate without surface modifier is easy to agglomerate, its dispersion in organic matter is poor, and its binding performance with organic matter is not good, so surface modification is required to enhance Its combination performance with organic matter, and prior art mainly adopts fatty acid or resin acid as the surface modifier of nano-calcium carbonate. CN1400167A discloses a kind of n...