A composite system waterproof membrane and its preparation method

Abstract

The invention belongs to the technical field of polymer materials, and particularly relates to a composite system waterproof coil and a preparation method thereof;. The composite system waterproof coil is prepared from, weight, 100-150 parts of polyvinyl chloride resin with a high polymerization degree, 8-10 parts of chlorinated polyethylene, 10-16 parts of liquid nitrile butadiene rubber, 15-30 parts of a polymer polyester plasticizer, 25-35 parts of dioctyl terephthalate, 4-6 parts of a solid calcium-zinc stabilizer or a liquid calcium-zinc stabilizer, 2.5-3.5 parts of an ACR processing modifier, 1.5-2.5 parts of a lubricant, 20-25 parts of a filling enhancer, 1.0-1.8 parts of a cross-linking agent, 0.6-0.8 part of an antioxidant, 0.8-1 part of an ultraviolet absorber, and 2-4 parts of apigment. The waterproof coil has the advantages of good mechanical and physical properties, high strength, excellent low temperature bending property, excellent aging resistance, extensive product resources, no heavy metals or phthalate plasticizers, meeting of environmental requirements, and low comprehensive cost.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-polymerization-degree polyvinyl chloride / chlorinated polyethylene / liquid nitrile rubber composite system waterproof coiled material and a preparation method thereof. Background technique [0002] Waterproof membrane is mainly used in building walls, roofs, tunnels, roads, landfills, etc., to resist external rainwater and groundwater leakage, a flexible building material product that can be rolled into rolls, as an engineering basis The leak-free connection with the building is the first barrier for the waterproofing of the entire project and plays a vital role in the entire project. At present, most of the waterproof membranes sold on the market are made of ordinary PVC (the degree of polymerization is about 1300) or modified PVC with additives extruded to make waterproof membranes, but the molecular weight of ordinary PVC is small, and the tensile st...

AI Technical Summary

Problems solved by technology

However, HP-PVC has high viscosity, poor fluidity, high plasticizing temperature, and poor processability. When the degree of polymerization exceeds 3500, the molecular weight is high, the viscosity is high, and the processability is poor.

Therefore, there are few reports about the application of high-polymerization polyvinyl chloride in the field of waterproofing.

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