Preparation method and application of multivariate cooperation flame-retardant polyol

Abstract

The invention relates to a preparation method and application of multivariate cooperation flame-retardant polyol and belongs to the technical field of chemical, energy saving and protection and environmental-friendly new processes. The preparation method comprises the steps of heating pentaerythritol, other alcohols and phosphorus pentoxide to obtain phosphorus cycle flame-retardant intermediate; continuously adding epoxy compound and tetrabromophthalic anhydride, and heating to perform catalytic reaction to obtain multivariate cooperation flame-retardant polyol. The preparation process is simple, the cost of raw materials is low, the operation is easy to perform and the prepared product is can be used for preparing polyurethane heat insulating materials.

Description

technical field [0001] The invention relates to a preparation method and application of a multi-component synergistic flame-retardant polyol, which belongs to the technical fields of chemical industry, energy conservation and protection, and environmentally friendly new technology. Background technique [0002] Polyurethane material is one of the most widely used polymer materials in the world, and the global annual consumption is increasing year by year. Polyurethane material has excellent properties such as good insulation, low thermal conductivity, oil resistance, cold resistance, moisture resistance, shock resistance, noise resistance, wear resistance and corrosion resistance, etc. The automotive industry, the home appliance industry, and many industries make use of the excellent bonding properties of polyurethane to prepare a variety of composite materials. my country adheres to the strategy of sustainable development, and the policy of "energy saving and emission redu...

AI Technical Summary

Problems solved by technology

Additive flame retardant means that it does not chemically react with the main raw material isocyanate or other additives prepared by polyurethane, and is evenly dispersed in the polyurethane polymer material in a physical state. If the amount of the flame retardant exceeds a certain range, it will reduce the polyurethane Physical and mechanical properties, and it is not easy to process and shape, and, as the polyurethane insulation material is used for a long time, the flame retardant gradually migrates to the insulation material, which not only pollutes the environment, but also leads to further reduction of the physical properties of the material, which directly affects the The performance of polyurethane materials. However, additive flame retardants are still the most widely used polyurethane flame retardant technology. With the continuous improvement of flame retardant requirements, it is obvious that additive flame retardants are difficult to meet the requirements.

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