Environment-friendly polypropylene composite material with high efficiency flame retardance

Abstract

The invention relates to a nitrogen-phosphorus expanded halogen-free flame retardant and a polypropylene composite material containing the flame retardant, wherein the flame retardant comprises the following components in percentage by weight: 30-40 percent of melamine cyanurate, 20-30 percent of melamine phosphate amine, 20-25 percent of pentaerythritol and 10-30 percent of hydroxide, wherein the hydroxide is aluminium hydroxide or magnesium hydroxide or the mixture of the aluminium hydroxide and the magnesium hydroxide. Compared with the traditional halogen-free flame retardant polypropylene composite material, the polypropylene composite material prepared from the flame retardant has high flame retardant efficiency, small influence on the physical performance of the finally prepared composite material due to the addition of only a smaller quantity of flame retardant, easier processing process and better thermal stability of the composite material.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a polypropylene composite material with flame retardancy. Background technique [0002] Polypropylene (PP) is a thermoplastic used in large quantities in plastics. It has excellent electrical insulation, low temperature resistance, chemical stability, easy processing and molding, and low price. It is widely used in electrical appliances, chemicals, Machinery, textile, construction, furniture, food packaging and other industries. [0003] Polypropylene is a flammable substance, and it is easy to produce a large number of molten droplets when burning. The current polypropylene composite materials need to be modified in terms of flame retardancy before application. The most commonly used flame-retardant modification method is polypropylene. Add suitable flame retardants to composite materials. [0004] In the prior art, flame retardants that can be added to polypropylene compo...

AI Technical Summary

Problems solved by technology

[0006] The flame retardant efficiency of the existing nitrogen-phosphorus intumescent halogen-free flame retardants is not high. Too much added amount will reduce the physical and mechanical properties of the composite material on the one hand; on the other hand, it will also make the composite material prone to expansion and air bubbles during processing, making the processing process more difficult. Intumescent halogen-free flame retardants generally have poor thermal stability, and are easy to decompose and fail when exposed to heat. These shortcomings affect the industrial application of composite materials