Efficient halogen-free intumescent flame-retardant polypropylene material

Abstract

The invention discloses an efficient halogen-free intumescent flame-retardant polypropylene material. At present, the flame-retardant modification of polypropylene is mainly realized by introducing an additive flame retardant, and the flame retardant used for polypropylene mainly comprises a halogenated flame retardant and a halogen-free flame retardant. The efficient halogen-free intumescent flame-retardant polypropylene material is a blend comprising the following components in percentage by mass: 72-85% of PP (polypropylene) resin, 12-23% of an intumescent flame retardant, 0.5-3% of a carbon-forming catalyst, 0.5-1% of an antioxidant and 0.5-2% of a coupling agent. The flame retardant efficiency of the blend is improved, the dosage of an intumescent flame retardant system is reduced and the flame retardant performance is improved by using the carbon-forming catalyst to accelerate an esterification reaction of a carbon source and between the carbon source and an acid source; and on the premise of obtaining the same flame retardant performance, the dosage of the flame retardant is reduced, and the lose of mechanical properties of the material is reduced.

Description

technical field [0001] The invention belongs to the field of flame retardant materials, in particular to a high-efficiency non-halogen intumescent flame retardant polypropylene material. Background technique [0002] Polypropylene (PP), as a general-purpose large-scale plastic, has the advantages of light weight, easy processing and molding, good heat resistance, good chemical corrosion resistance, and excellent mechanical properties, so it is widely used in automobiles, construction, electronic appliances and other industries. However, due to its own structure, the flame retardancy of polypropylene is relatively poor, which greatly limits its application field. Therefore, flame retardant modification of polypropylene is required to further expand its application field. [0003] At present, the flame retardant modification of polypropylene is mainly through the introduction of additive flame retardants, and a series of physical and chemical reactions that occur during the c...

AI Technical Summary

Problems solved by technology

[0005] Although intumescent flame retardants have made great progress in flame retardant polyolefin materials, there are still some problems, such as: large amount of addition, easy moisture absorption of acid sources, and poor dispersion.

Therefore, the good flame retardant effect of intumescent flame retardants is often at the expense of sacrificing mechanical properties and water resistance, thus limiting its application in many demanding fields.