Preparation method of water glass polyurethane flame retardant material

Abstract

The invention discloses a preparation method of a water glass polyurethane flame retardant material. The water glass polyurethane flame retardant material is prepared from the following raw materials by weight: 80 to 90g of water glass, 10 to 20g of polyester polyol, 5g of special polyester NG-100, 4g of silicone oil, a catalyst Y (0.5g of PT303, 1g of PT304 and 2g of potassium acetate) and 150 to 160g of methylene diphenyl diisocyanate (MDI).

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a preparation method of a water glass polyurethane flame retardant material. Background technique [0002] Polyurethane thermal insulation material is currently the best thermal insulation material in the world. Polyurethane has excellent properties such as light weight, low thermal conductivity, good heat resistance, aging resistance, easy bonding with other substrates, and no molten droplets when burned. It is widely used in roofs, walls, ceilings, and floors of buildings in European and American countries , doors and windows, etc. as thermal insulation materials. Polyurethane, which is called "new era environmental protection material" by the construction industry, is prepared by cross-linking reaction foaming of rigid polyether, additives and polyisocyanate. It is a new type of thermal insulation and anti-corrosion polymer synthetic material. It has a low wat...

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Problems solved by technology

And by choosing polyhydroxyl special polyester NG-100 for compounding, the defects of high viscosity and easy layering of the system can be solved. In addition, because NG-100 itself contains certain hydroxyl groups, it participates in the reaction in the polyurethane foaming process to obtain plant-based The long-chain alkane polymethylamino ester solves the toughness of the foam, and the material prepared in this way has the advantages of good flexibility and flame retardancy, low thermal conductivity, and high mechanical strength. In addition, there is no need to add other compounds containing Phosphorus, halogen-containing and other polyurethane flame-retardant foam materials are conducive to the dimensional stability of the material

[0008] The water glass polyurethane flame retardant material of the present invention is used in combination with special polyester NG-100, which can effectively increase the addition ratio of water glass, and also solve the problem of mutual compatibility of various components in the preparation formula and be used in polyurethane insulation materials Solve the problem of crispy materials

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