Preparation method of polyurethane binder

Abstract

The invention discloses a preparation method of a polyurethane binder. The polyurethane binder comprises a main agent and a curing agent, and the main agent comprises the following raw materials: soybean oil polyester polyol, soybean oil polyester polyol, 1, 4 bis (sec-butylaminobenzene), diisopropylnaphthalene, a dispersant BYKP104, zeolite powder, silica powder and iron oxide red powder. Polyhydric alcohol resin taking soybean oil derivatives as main components is adopted as a hydroxyl component, and the soybean oil is wide and rich in source, belongs to an all-natural renewable resource, isgreen and environment-friendly, and is not easily influenced by a single supplier to generate great fluctuation, so that the timeliness of supply and the stability of cost price can be effectively guaranteed. The soybean oil polyol mainly containing polyester is adopted, so that the tensile strength of the cured product is greatly improved compared with the common grease polyol resin mainly containing polyether. The diisopropylnaphthalene toughening agent is used, so that the water resistance of the product can be improved while the product is toughened.

Description

Technical field[0001]The invention relates to the technical field of adhesive preparation, and more specifically to a method for preparing a polyurethane adhesive.Background technique[0002]With the development of economy and the progress of society, people have put forward new ideas in the aspects of traffic warning, visual safety guidance, and pavement aesthetics in addition to the daily performance of urban arterial roads and other motor vehicle lanes, non-motor vehicle lanes, and sidewalks. Requirements. At present, the common black asphalt pavement and gray cement concrete pavement, these two kinds of pavement can no longer fully meet the new demands of the above-mentioned growing pavement. Colored pavement can be used to enhance road traffic safety, warn passing vehicles, standardize road types, facilitate operation management, and maintain traffic safety by laying a colored pavement layer on the existing pavement. At the same time, it can also be used in areas such as sports v...

AI Technical Summary

Problems solved by technology

[0005] Among them, although the two-component polymethyl methacrylate (PMMA) binder has good weather resistance and mechanical strength, the material has a pungent odor (from acrylic acid monomer and reactive diluent crosslinking agent), and belongs to Flammable and explosive dangerous chemicals have high requirements for storage and transportation, and the price is relatively expensive; in addition, because the curing process is free radical polymerization, the amount of initiator added has a great impact on the pot life after batching. If the curing is too fast during the operation, the wetting time of the substrate and aggregate is not enough, and it is easy to cause adhesion defects

[0006] The two-component solvent-free epoxy resin adhesive has good adhesion and mechanical strength, but due to its poor elasticity retention rate at low temperature, it will cause cracking when the road surface is used, especially when it is paved on a low-strength road. Residential asphalt base