Filling modifier for plastic product and preparation method thereof

Abstract

The invention discloses a filling modifier for a plastic product and a preparation method thereof. The filling modifier is prepared from the following raw materials by weight: 20 to 23 parts of methyl methacrylate, 30 to 35 parts of butyl acrylate, 0.3 to 0.5 part of sodium dodecyl benzene sulfonate, 0.3 to 0.5 part of divinyl benzene, 0.3 to 0.4 part of potassium persulphate, 35 to 40 parts of nanometer calcium carbonate, 0.1 to 0.2 part of sodium stearate, 0.6 to 0.8 part of polyoxyethylene, 0.4 to 0.6 part of dimethicone, 15 to 18 parts of diatomite powder, 3 to 5 parts of epoxidized soybean oil, 6 to 9 parts of boron nitride, 0.5 to 0.7 part of a silane coupling agent kh550 and a proper amount of deionized water. The filling modifier improves impact strength of the product, substantially reduces the usage amount of an impact modifier for PVC and enables cost to be greatly decreased while modifying PVC.

Description

technical field [0001] The invention relates to the technical field of PVC modifiers, in particular to a filling modifier for plastic products and a preparation method thereof. Background technique [0002] With the continuous development of the polyvinyl chloride industry, especially the rapid economic growth in developing countries, the demand for polyvinyl chloride has increased rapidly. Due to its excellent corrosion resistance, flame retardancy, and insulation properties, polyvinyl chloride has been widely used application. However, it is brittle and has poor impact resistance. In order to improve the performance of polyvinyl chloride and expand its application range, some small-molecule plasticizers were commonly used at first, but these small-molecule plasticizers are in the process of product processing and use. , volatilization and migration occur, which not only pollutes the environment, but also makes the product brittle and hard, losing its use value. At presen...

AI Technical Summary

Problems solved by technology

However, the surface of nano-calcium carbonate is hydrophilic and oleophobic, and its compatibility with the matrix is ​​poor. It is difficult to form a binding force with the PVC matrix, and it is easy to generate interface defects, resulting in a decrease in material performance.