Rare-earth oxide and microencapsulated red phosphorus synergic flame retardance PA6 composite and preparation method thereof

Abstract

The invention provides a rare-earth oxide and microencapsulated red phosphorus synergic flame retardance PA6 composite and a preparation method thereof. The rare-earth oxide and microencapsulated red phosphorus synergic flame retardance PA6 composite is characterized by being prepared from PA6, microencapsulated red phosphorus and rare-earth oxide. Rare-earth oxide is introduced into a red phosphorus flame-resistant polymer material system, rare-earth oxide can catalyze dehydrated carbonization of red phosphorus, a more compact and continuous charcoal layer structure can be formed, the mass transfer process of volatile products generated by polymer degradation to a gas phase is blocked, feedback of heat generated by gas phase combustion to a condensed phase is also blocked, and flames are prevented from propagating and spreading.

Description

technical field [0001] The invention relates to the technical fields of organic synthesis, blending of polymer composite materials, and testing of flame-retardant properties of materials, in particular to a flame-retardant PA6 (nylon 6) composite material synergistically formed by rare earth oxide and microcapsule red phosphorus and a preparation method thereof. Background technique [0002] Red phosphorus is a highly active flame retardant with high flame retardant efficiency, and has excellent flame retardant effect on PA, PC, PET and other polymers containing oxygen or nitrogen. However, red phosphorus is easy to absorb moisture in the air, and the red phosphorus existing on the surface of polymer material products absorbs moisture and oxidizes after a period of time, causing the surface of the product to be corroded and lose its luster and original performance, and gradually deepen inward; Red phosphorus has poor compatibility with polymers, and it is not easy to dispers...

AI Technical Summary

Problems solved by technology

[0005] However, the charcoal layer formed during the flame retardant process of microencapsulated red phosphorus is relatively sparse, not dense and continuous, which leads to a large amount of heat and smoke generation during the combustion process of red phosphorus flame retardant polymer materials.

Images