Polyvinyl chloride single-wall corrugated pipe used for buildings and preparation method of polyvinyl chloride single-wall corrugated pipe

Abstract

The invention aims at providing a polyvinyl chloride single-wall corrugated pipe used for buildings. The polyvinyl chloride single-wall corrugated pipe is composed of, by weight, 100 parts of polyvinyl chloride resin, 2-20 parts of light calcium carbonate, 2-6 parts of heat stabilizer, 1-8 parts of impact modifier, 0.3-3 parts of processing agents, 0-3 parts of lubricant, 2-12 parts of additive flame retardant and 0.1-3 parts of pigment. The additive flame retardant is composed of two types of fire retardant including zinc borate and ammonium octamolybdate according to the mass ratio of 1-7 to 1-5. The average particle size of zinc borate is smaller than or equal to 5 micrometers. The average particle size of ammonium octamolybdate is smaller than or equal to 2 micrometers. The excellent flame retardant and smoke suppression performance can be achieved by only adding a small amount of fire retardant, and the influences on mechanical performance such as impact resistance of the polyvinyl chloride single-wall corrugated pipe are small.

Description

technical field [0001] The invention relates to the technical field of chemical building materials, in particular to a polyvinyl chloride single-wall corrugated pipe for construction and a preparation method thereof. Background technique [0002] Commercially available single-wall corrugated pipes for construction are mostly made of polyethylene (PE). The unit price of PE plastic is more than 50% higher than that of PVC plastic. In addition, PE plastic is easy to burn, so a large amount of flame retardant needs to be added. This further pushes up the cost of PVC single-wall corrugated pipes, so the use of PVC single-wall corrugated pipes in the construction field has significant economic significance. [0003] When polyvinyl chloride single-wall corrugated pipes are used for wire sheathing pipes inside buildings, the advantages of polyvinyl chloride (PVC) plastics such as insulation, flame retardancy, corrosion resistance, and low price make the performance of such pipes com...

AI Technical Summary

Problems solved by technology

[0002] Commercially available single-wall corrugated pipes for construction are mostly made of polyethylene (PE). The unit price of PE plastic is more than 50% higher than that of PVC plastic. In addition, PE plastic is easy to burn, so a large amount of flame retardant needs to be added. This further pushes up the cost of polyethylene single-wall corrugated pipes, so the use of PVC single-wall corrugated pipes in the construction field has significant economic significance