Flame retardant with good flowing property and for polyurethane foam product

Abstract

The invention discloses a flame retardant with good flowing property and for a polyurethane foam product. A formula of the flame retardant comprises the following components in parts by weight: 2-3 parts of trichloroacetaldehyde, 10-15 parts of tris(1,3-dichloropropyl)phosphate, 4-6 parts of tributyl phosphate, 0.3-0.6 part of trioctyl phosphate, 8-10 parts of triisocyanate, 15-18 parts of hydrated alumina, 10-13 parts of expanded graphite, 5-9 parts of hydrated zinc borate, 0.1-0.3 part of molybdenum trioxide and 1-1.3 parts of tetrabromophthalic anhydride. According to the invention, hydrated alumina and expanded graphite are used as flame-retardant materials, triphosphate and molybdenum trioxide are mixed, and the characteristic of low viscosity of triphosphate is utilized, so the fluidity of hydrated alumina and expanded graphite is improved after triphosphate is mixed with hydrated alumina and expanded graphite; and thus, the fluidity of the whole flame retardant is further improved, and in the process of polyurethane foaming, hydrated alumina and expanded graphite can be quickly mixed in the polyurethane foaming raw material to allow the whole polyurethane foaming process tobe quicker.

Description

technical field [0001] The invention relates to the technical field of polyurethane foaming, in particular to a flame retardant for polyurethane foaming products with good fluidity. Background technique [0002] Flame retardants are a class of additives that prevent plastics from igniting or inhibit the spread of flames. According to its use method, it can be divided into two types: additive type and reactive type. Additive flame retardants are mixed into plastics during the processing of plastics, and are mostly used in thermoplastics. Reactive flame retardants are chemically bonded to polymer molecular chains as monomers during polymer synthesis, and are mostly used in thermosetting plastics. Some reactive flame retardants can also be used as additive flame retardants. When synthesizing polyurethane foam plastics, adding some flame retardants that do not react with reactants is an effective way to improve the flame retardancy of materials. Due to the poor fluidity of soli...

AI Technical Summary

Problems solved by technology

When synthesizing polyurethane foam plastics, adding some flame retardants that do not react with reactants is an effective way to improve the flame retardancy of materials. Due to the poor fluidity of solid flame retardants, high-speed and long-term processing is required in the polyurethane foaming process. Stirring for a long time, resulting in a long time-consuming polyurethane foaming process, therefore, a flame retardant for polyurethane foam products with good fluidity is proposed