Polyurethane waterproof material production process

Abstract

The invention provides a production process of a polyurethane waterproof material. The production process comprises the following steps: s1, producing and storing a prepolymer, producing and storing thixotropic paste, dehydrating and storing heavy calcium carbonate, and producing and storing color paste; s2, putting the white carbon black, the auxiliary agent and the solvent into a tank for storage; s3, metering dehydrated heavy calcium carbonate and white carbon black, then premixing the components by a side feeding machine, then adding the prepolymer, thixotropic paste, an auxiliary agent and a solvent, mixing the components by a screw machine, and discharging the mixture to a pressing machine; s4, dividing the final products into a white finished product and a gray finished product, discharging the white finished product by using a 2K static machine, diluting the color paste in the gray finished product, feeding the color paste into a 3K static machine, mixing the paste with the materials, and discharging a product. The whole production process is completely automatic, manual carrying and adding of workers are not needed, and metering control over the raw materials is more accurate. In addition, after primary treatment, storage of the raw materials is more reasonable, moisture cannot be absorbed, feed liquid cannot be layered, and the quality of final finished products is higher.

Description

technical field [0001] The invention relates to the technical field of polyurethane waterproof materials, in particular to a production process of polyurethane waterproof materials. Background technique [0002] Polyurethane waterproof coating is a waterproof material for on-site construction made of polyurethane resin as the main material. Developed to overcome the shortcomings of traditional asphalt waterproof coatings and waterproof membranes. It belongs to the chemical reaction type waterproof coating. After curing, it is a rubber-like high-elastic coating film. The coating film is seamless as a whole. It has strong adaptability to the deformation of the cracks in the base layer, and is convenient for construction and maintenance. Polyurethane waterproof coating is an amorphous viscous liquid substance before curing, which can be applied on any complex base layer surface. Because of its excellent comprehensive performance, it is called "liquid coil" by the industry and ...

AI Technical Summary

Problems solved by technology

[0003] However, the following problems exist in the production and processing of waterproof coatings at present: the raw materials need to be processed during the production and processing of waterproof coatings, but because there are many types of raw materials and many methods to be processed, and because most of them are manually operated, the raw materials The processing is often substandard and there are problems in the storage process, resulting in low yield and poor performance of the final product

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