A kind of pvc reinforcement board and preparation method thereof

Abstract

The invention discloses a PVC reinforcement plate and a preparation method thereof. The reinforcement plate comprises PVC resin powder, lead sulfate tribasic, a compound lead stabilizer, barium stearate, calcium stearate, chlorinated polyethylene, an ACR high impact resistance type modifier, a rare earth coupling agent and activated calcium carbonate. The preparation method comprises the steps that materials are prepared according to the components; the prepared materials are put into a high-speed kneading machine to be mixed, and then put into cold blender to be cooled; the cooled raw materials are subjected to internal mixing, primary smelting and refining in sequence; the raw materials obtained after refining are calendered to be a sheet through a three-roll plastic calender, and the formed sheet is subjected to hot-pressing to be the plate. For a general PVC plate, in the sub-zero temperature environment, the plate brittle is large, and cracking is likely to occur due to stress; the product is mainly used for low temperature environment, an appropriate amount of chlorinated polyethylene and the ACR high impact resistance type modifier are added to improve the low-temperature toughness and impact performance of the reinforcement plate, the rear earth coupling agent is added simultaneously, the mixture and the chlorinated polyethylene and the ACR high impact resistance type modifier together act on PVC resin and activated calcium carbonate, and the tensile yield stress can be improved while the notch impact strength and tensile elongation at break of the PVC reinforcementplate are improved.

Description

technical field [0001] The invention relates to polymer composite materials, in particular to a PVC reinforced board and a preparation method thereof. Background technique [0002] In the chemical smelting industry, general PVC laminates are brittle under low temperature conditions, and the plates are easy to crack. The plastic equipment prepared by them has great safety hazards. Therefore, in order to avoid the above hidden dangers, the toughness requirements of PVC laminates are generally higher. high. At present, the toughness of PVC laminates is mainly reflected by two indicators: tensile elongation at break and notched impact strength. However, adding chlorinated polyethylene (CPE) or acrylic ester (ACR) can improve its notched impact strength and tensile elongation at break, but it will easily lead to a decrease in its tensile yield stress. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned technical deficienc...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, propose a PVC reinforced board and its preparation method, and solve the technical problem that the PVC laminated board cannot take into account the improvement of notched impact strength, tensile elongation at break and tensile performance in the prior art

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