Weather-resisting polyvinyl chloride building plastic formwork and preparation method

Abstract

The invention provides a weather-resisting polyvinyl chloride building plastic formwork and a preparation method. The weather-resisting polyvinyl chloride building plastic formwork is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride, 60-65 parts of calcium powder, 8-10 parts of wood powder, 6-8 parts of tribasic lead sulfate, 10-15 parts of chlorinated polyethylene resin, 2-3 parts of polymethyl methacrylate, 1-2 parts of polyethylene wax, 1-2 parts of resin chloroprene rubber adhesive, 15-18 parts of a polypropylene grafted butyl acrylate copolymer, 0.5-1 part of azodicarbonamide, 1-2 parts of sodium bicarbonate, 1-2 parts of stearic acid, 1-2 parts of oxidized polyethylene wax, 1-2 parts of an ultraviolet light absorber and 1-2 parts of phosphite ester. The preparation method of the weather-resisting polyvinyl chloride building plastic formwork comprises the following steps: heating a mixer to 90 degrees centigrade, adding the calcium powder and the wood powder, then orderly adding polyvinyl chloride, and finally adding the other raw materials; putting the mixed materials into a double-screw extruder, and extruding and plasticizing the materials into a colloidal material; molding the colloidal material in a mold of a mold pressing forming machine, and thus obtaining the weather-resisting polyvinyl chloride building plastic formwork.

Description

technical field [0001] The invention relates to a PVC building plastic formwork, in particular to a weather-resistant polyvinyl chloride building plastic formwork and a preparation method. Background technique [0002] Composite plastic formwork is a new type of building formwork that is environmentally friendly, economical, recyclable, and in line with national industrial policies. Since the 1990s, with the development of my country's construction system, the shortcomings of the existing formwork have been exposed. (1) Bamboo glue (composite) board template: it needs to be made on site, which increases the production cost; the number of template turnover is small; in the later stage of turnover, the trimming of the template is increased, and the cost is increased; it is easy to cause the mold to expand and the concrete surface to be "wavy". affect the quality of concrete. (2) Steel formwork: The process is complicated and the price is expensive; it is not easy to demo...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the PVC building plastic formwork is too brittle and is exposed to the atmosphere during the construction process, it is easy to age and the number of cycles is too low, the present invention provides a weather-resistant polyvinyl chloride building plastic formwork and Preparation