Preparation process of polymer waterproof membrane

Abstract

The invention discloses a process for preparing a polymer waterproofing membrane. The process comprises the following steps: adding an asphalt modifier according to 5% to 15% of the weight of the asphalt in the dehydrated liquid asphalt, stirring for 0.5 to 2 hours, and then starting the process. The colloid mill is circulated for 2 to 4 hours, then 40% to 50% of the asphalt weight is added with talcum powder, mixed and stirred at a temperature of 150 to 180 degrees for 1 to 3 hours, and then cooled to 100 to 120 degrees to make a liquid asphalt paste. The polymer plastic sheet and the polymer filament random polyester fabric are mixed and hot-melted and cooled together to form a carcass sheet, and the obtained inorganic filler asphalt paste is sprayed onto the polymer carcass non-woven fabric The side of the rubber asphalt is then coated on the surface of the rubber asphalt liquid, and then it is cooled once and twice to make the carcass cool and shape. The product prepared by the process of the invention only needs to be coated on one side, the structure is simplified, the volume is light, the deformation is not easy, and the corrosion resistance is good. The elongation at break can exceed 400%, which improves the tensile and tear resistance properties, and has excellent waterproof and anti-corrosion properties, as well as plant root resistance and puncture resistance.

Description

technical field [0001] The invention relates to the field of construction, in particular to a preparation process of a polymer waterproofing membrane. Background technique [0002] The envelope structure of the building should prevent the infiltration of rainwater, snow water and groundwater; prevent the erosion of moisture, steam and other harmful gases and liquids in the air; the partition structure should prevent the seepage of water supply and drainage. These materials that prevent penetration, leakage and erosion are collectively referred to as waterproofing materials. According to the material properties, there are mainly three types of waterproof materials: waterproofing membrane, 911 polyurethane waterproofing material and new polymer cement-based waterproofing material, among which the waterproofing membrane is mainly used for engineering construction, such as roofs, exterior walls, basements, etc.; the prior art The production process of the waterproof membrane in...

AI Technical Summary

Problems solved by technology

Divided according to material properties, waterproof materials mainly contain three categories: waterproof coiled material, 911 polyurethane waterproof material and new polymer cement-based waterproof material, wherein waterproof coiled material is mainly used in engineering construction, such as roofs, exterior walls, basements, etc.; prior art The production process of the waterproof membrane is cumbersome, the production cost is high, the structure of the produced membrane is complex, the volume is heavy, the base layer is easy to deform, the resistance strength is low, the tensile, tear resistance and corrosion resistance are poor, and the moisture content of the base layer during use The requirements are high, and at the same time, the waterproof layer of the cross operation is easy to be damaged, and water is easy to flow, causing leakage points. Once the waterproof layer is damaged, water will flow everywhere, maintenance will be very troublesome, and may even cause the overall failure of the waterproof layer

Moreover, the waterproof membrane produced by the existing technology is complex in construction, and cannot be constructed in case of weather changes (rainy weather), and is greatly affected by the weather.