Fire-resistant polyethylene core material with no halogen applicable to fireproofing aluminum plastic board and its preparing method

Abstract

A flame-retarding non-halogen polyethene material as the core layer of refractory aluminium-plastics plate is prepared from polyethene, modified polyethene, non-halogen flame-retarding agent, flame-retarding synergist, and other assistants through preparing particles by kneading, extruding out and cooling, and preparing plate by single-screw plate extruder. Its advantages are continuous production, easy control and high quality of product.

Description

technical field [0001] The invention relates to a flame-retardant polyethylene core layer material used as a new type of building decoration material—a fireproof aluminum-plastic panel and a preparation method thereof, in particular to a halogen-free low-smoke flame-retardant polyethylene core layer material and a preparation method thereof. Background technique [0002] The core material for the aluminum-plastic composite board disclosed, used and sold before the patent application includes pure polyethylene core material and halogen-containing flame-retardant core material. The former pure polyethylene core material is currently sold in large quantities in the market and is used as the core material of ordinary aluminum-plastic composite panels, accounting for more than 90%. However, because its oxygen index is only 17.5, it is not flame-retardant and is a flammable material. It is easy to melt and drip, causing the fire to spread, so it is currently restricted by the publ...

AI Technical Summary

Problems solved by technology

The former pure polyethylene core material is currently sold in large quantities in the market and is used as the core material of ordinary aluminum-plastic composite panels, accounting for more than 90%. However, because its oxygen index is only 17.5, it is not flame-retardant and is a flammable material. It is easy to melt and drip, causing the fire to spread, so it is currently restricted by the public security fire department and the architectural design and construction department, especially in important public places, such as airports, stations, high-end entertainment venues, and indoor and outdoor decoration of high-end high-rise buildings. , requires the use of flame retardant or non-combustible fireproof building decoration materials

The latter is a halogen-containing flame-retardant core material. Although it has certain flame retardancy, because the base material contains halogen or a halogen / antimony flame retardant is added, a large amount of toxic carbon monoxide and highly corrosive halogenated halogen will be produced due to combustion in the event of a fire. Hydrogen smog causes secondary pollution. Therefore, the aluminum-plastic panels produced by using it as the core material are gradually being eliminated because they do not meet the requirements of environmental protection industry policies and the development direction of international flame-retardant chemical building materials.