Special high-viscosity ACR for PVC foamed sheet

Abstract

The invention provides a special high-viscosity ACR for a PVC foamed sheet, and relates to the technical field of PVC foamed sheet production. The special high-viscosity ACR for the PVC foamed sheet comprises, by weight, 70 to 90 parts of methacrylates; 10 to 30 parts of acrylates; 1 to 1.5 parts of softened water; 1 to 1.5 parts of an initiator; 1 to 1.5 parts of an emulsifier; and 0.5 to 1.5 parts of N2. The formula comprises, by weight, 80 parts of metacrylic acid esters, 15 parts of acrylic acid esters, 1.5 parts of softened water, 1.5 parts of an initiator, 1 part of an emulsifier and 1 part of N2. The method comprises the following specific steps: S1, pumping metacrylates and acrylates from a tank area to a weighing tank through a feeding pump, and weighing the metacrylates and the acrylates. The molecular weight of the product is obviously improved by carrying out constant-temperature reaction at room temperature, the production efficiency is improved, meanwhile, the output of byproducts is obviously reduced, the melt strength of a PVC mixture is obviously improved by the high-viscosity ACR, the inorganic matter filling amount of the PVC product is improved, and meanwhile, the overall quality of the PVC foamed sheet is also improved.

Description

technical field [0001] The invention relates to the technical field of PVC foam board production, in particular to a special high-viscosity ACR for PVC foam boards. Background technique [0002] PVC board accounts for the largest proportion in the building materials industry, accounting for 60%, followed by the packaging industry, and several other industries with small-scale applications; according to the degree of softness and hardness, it can be divided into soft PVC and hard PVC; according to the production process, it can be divided into PVC structure. Leather foam board and PVC free foam board; can be divided into PVC transparent board and PVC board according to transparency and opacity; membrane. It is used for the surface packaging of various panels, so it is also called decorative film and adhesive film. It is used in many industries such as building materials, packaging, and medicine; among them, the building materials industry accounts for the largest proportion,...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a special high-viscosity ACR for PVC foamed boards, which solves the defects in the existing high-viscosity ACR formula design. The PVC foamed boards produced by it not only have low overall strength, but also The wear resistance of the PVC foam board is poor, and it is easy to cause deformation or cracking of the PVC foam board due to slight collisions.