Manufacturing process of polyurethane prefabricated runway coiled material and obtained runway coiled material

Abstract

The invention provides a manufacturing process of a polyurethane prefabricated runway coiled material. The manufacturing process comprises the following steps: firstly, paving a plastic film on a platform; then uniformly paving a polyurethane material on the plastic film; and carrying out high-temperature compounding on the two layers of materials to form the prefabricated runway coiled material.The manufacturing process is simple in process, short in production period and low in energy consumption. The manufacturing process is used for preparing polyurethane materials of the prefabricated runway coiled material. Polyether polyol and MDI are taken as main raw materials, the 3 ,3'-dichloro-4,4'-diaminodiphenylmethane is taken as a chain extender, and amino groups in the chain extender react with isocyanate end group prepolymer, so that the mechanical property of polyurethane is improved. By use of the white carbon black, the strength, the toughness, the heat resistance, the wear resistance and the aging resistance of the polyurethane can be improved. By use of the calcium carbonate, the mechanical property of the polyurethane is further enhanced. By use of the plasticizer, the processability of the polyurethane is improved. Pentaerythritol diphosphite distearyl ester is used as an antioxidant, so that the service life of polyurethane is prolonged. The prefabricated runway coiled material provided by the invention is high in safety performance and high in durability.

Description

technical field [0001] The invention belongs to the field of runway coils, and in particular relates to a manufacturing process of polyurethane prefabricated runway coils and the obtained prefabricated runway coils. Background technique [0002] Cracks, blisters, aging, cracking, etc. often appear on traditional runways. At the same time, traditional runways cannot be regenerated, which wastes resources. In today's market, there is an urgent need for a material that saves resources and has a longer service life as a runway material. Polyurethane (PU) material is the abbreviation of polyurethane, which is a kind of polymer material. Polyurethane is an emerging organic polymer material, which is widely used in many fields of the national economy because of its excellent performance. The product application fields involve light industry, chemical industry, electronics, textile, medical treatment, construction, building materials, automobile, national defense, aerospace , Avia...

AI Technical Summary

Problems solved by technology

The PU plastic runway in the prior art is mainly a mixed type with rubber particles on the surface. In the later stage of the casting process of the plastic runway, rubber particles are spread on the surface. After curing, the rubber particles are embedded and fixed on the plastic surface to play an anti-skid role. Rubber particles are easy to fall off from the plastic runway, affecting movement and reducing the service life of the runway

Therefore, the polyurethane prefabricated runway came into being, but the existing polyurethane prefabricated runway also has problems such as poor runway elasticity and short service life, and the existing polyurethane material production process is complicated, a large amount of organic solvent is used, the production cycle is long, and the energy consumption is large. large area

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