A kind of microfoam flame-retardant polyurethane material and preparation method thereof

Abstract

The invention discloses a slightly foaming flame-retardant polyurethane material, and a preparation method thereof. The slightly foaming flame-retardant polyurethane material is prepared from isocyanate, a polycarbonate dihydric alcohol, a filling material, a pigment, a halogen free fire retardant, a flame retardant synergistic agent, a chemical foaming agent, a physical foaming agent, an anti-oxidant, an ultraviolet ray absorber, and a mildew-resistant antiseptic. The preparation method comprises following steps: 1, the polycarbonate dihydric alcohol and the filling material are subjected topre-mixing; 2, isocyanate is added, full reaction is carried out, the pigment, the halogen free fire retardant, the flame retardant synergistic agent, the chemical foaming agent, the physical foamingagent, the anti-oxidant, the ultraviolet ray absorber, and the mildew-resistant antiseptic are added for full reaction. The internal part of the slightly foaming flame-retardant polyurethane materialpossesses uniform micropores; the elasticity is high; the flame resistance, the aging resistance, the mechanical properties, the wear resistance, and the slide resistance are excellent; no smell is observed; the preparation method is safe, is friendly to the environment, is simple, and is convenient for large-scale industrialized production.

Description

technical field

[0001] The invention relates to a microfoaming flame-retardant polyurethane material and a preparation method thereof, belonging to the technical field of polyurethane materials. Background technique

[0002] Polyurethane is generally obtained by the reaction of isocyanate and polyether polyol, and is widely used in the plastic track industry. The existing polyurethane runway is mainly paved with a single-component polyurethane adhesive and a large amount of black rubber particles. The construction is simple, the site has good air permeability, excellent extension recovery, cold resistance, oil resistance, and bending resistance, but it has poor aging resistance. , poor hydrolysis resistance, general wear resistance, low mechanical properties, short service life, heavy odor, poor flame retardancy and other problems, it also has certain pollution to the environment. With the improvement of people's living standards, people pay more and more attention to their...

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