Environment-friendly corrosion-resistant PVC (Polyvinyl Chloride) section bar for closed door and window and preparation method thereof

Abstract

The invention discloses an environment-friendly corrosion-resistant PVC (Polyvinyl Chloride) section bar for a closed door and window. The section bar comprises a PVC substrate and a heat-resistant modifier, wherein the content of the PVC substrate is 95.5-96.5 percent; the content of the heat-resistant modifier is 3.5-4.5 percent; 2-5 parts of rare earth composite stabilizer is added into the heat-resistant modifier; the rare earth composite stabilizer comprises the following components in parts by mass: 40-61 parts of mixed rare earth chloride, 18-26 parts of zinc sulfate, 16-20 parts of calcium chloride, 20-28 parts of barium chloride, 20-25 parts of sodium hydroxide, 5-10 parts of stearic acid and 10-12 parts of colorant. The invention also designs a preparation method of the environment-friendly corrosion-resistant PVC section bar for the closed door and window. The weather fastness of the PVC material can be enhanced, the anti-aging time is prolonged, and the energy consumption is reduced while the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to an environment-friendly and corrosion-resistant PVC profile for closing doors and windows and a preparation method thereof. Background technique [0002] Up to now, PVC plastic profiles have become a very mature product. The product categories include PVC plastic profiles for doors and windows, PVC exterior wall hanging panels, PVC synthetic resin tiles, PVC guardrails and other outdoor products. PVC plastic has the advantages of good rigidity, high strength, flame retardancy, and good electrical insulation. However, because PVC has poor heat resistance and corrosion resistance, it cannot be used at higher temperatures, which greatly affects PVC insulation. Profile application. [0003] However, the color matching between ordinary PVC doors and windows and building facades is unavoidably monotonous. Compared with single white PVC doors and windows, colored PV...

AI Technical Summary

Problems solved by technology

PVC plastic has the advantages of good rigidity, high strength, flame retardancy, and good electrical insulation. However, because PVC has poor heat resistance and corrosion resistance, it cannot be used at higher temperatures, which greatly affects PVC insulation. Profile application

[0003] However, the color matching between ordinary PVC doors and windows and building facades is unavoidably monotonous. Compared with single white PVC doors and windows, colored PVC doors and windows meet the needs of colorful development of urban buildings, and its application is increasing rapidly, and PVC materials Because the molecular structure of PVC resin always has relatively unstable and active Cl, it is easy to form a double bond structure, which makes the weather resistance of PVC resin worse, and it is easily damaged by ultraviolet rays in sunlight during outdoor use, causing PVC resin to turn yellow and fade. Discoloration such as red