Efficient precipitation resistant flame retardant composition and preparation method thereof

Abstract

The invention discloses an efficient precipitation resistant flame retardant composition and a preparation method thereof, in particular to the highly efficient precipitation resistant flame retardant composition suitable for flame retardant polyolefin materials and the preparation method thereof. The highly efficient precipitation resistant flame retardant composition comprises the following components by weight percent: 5-90% of melamine hydrobromide, 5-75% of phosphinate, 5-15% of flame retardant synergistic agent and 0-5% of flame retardant synergist. The preparation method of the efficient precipitation resistant flame retardant composition is as follows: the powder or liquid of the phosphinate, the melamine hydrobromide, the flame retardant synergistic agent and the flame retardant synergist are fully and evenly mixed to obtain the highly efficient precipitation resistant flame retardant composition. The efficient precipitation resistant flame retardant composition of the invention can be used for polyethylene, polypropylene, polystyrene and various polyolefin copolymers, and is especially suitable for polypropylene, and the flame retarding grade can be up to UL94 V-0; and the efficient precipitation resistant flame retardant composition has high flame retarding efficiency, good fluidity and no precipitation, can meet the use requirements of flame retardant materials for use in building materials, electric appliance shells, sockets, bellows, lighting lamps and the like.

Description

technical field [0001] The invention relates to a high-efficiency precipitation-resistant flame retardant composition and a preparation method thereof, in particular to a high-efficiency precipitation-resistant flame retardant composition suitable for flame-retardant polyolefin materials and a preparation method thereof. Background technique [0002] Polyolefins include polyethylene, polypropylene, polyvinyl acetate, polystyrene and various olefin copolymers, among which polypropylene is used in the largest amount and is most widely used. Polypropylene (PP) has become one of the widely used general-purpose plastics because of its excellent comprehensive properties, good performance-price ratio, and wide processing and molding conditions. However, polypropylene is easy to burn, and its limiting oxygen index is 17.0-18.0%. It cannot be extinguished after being ignited in the air. Therefore, for facilities and places that are prone to fire, polypropylene must be flame-retardant...

AI Technical Summary

Problems solved by technology

It is a mature and well-known technology to use the above-mentioned flame retardants and antimony oxides for polyolefin flame retardancy. Decabromodiphenyl ether, decabromodiphenylethane and other flame-retardant polyolefins will be affected due to large additions. Mechanical properties of materials, TBC and BT93 have average flame retardant efficiency and are expensive, OBE and other flame retardants have high flame retardant efficiency but are easy to precipitate from the surface of flame retardant polyolefin

In recent years, octabromosulfide is the most efficient flame retardant for polyolefin at home and abroad. For example, Chinese patent 200610029852, US patent 6780914 and 7067576 have reported the use of octabromosulfide and antimony trioxide compound system to flame-retardant polypropylene , although its flame retardant efficiency is high and its precipitation resistance is good, but due to the limited source of bisphenol S raw materials for the production of octabromo-S ether (mainly due to the serious pollution in the production process), the price is high and the market supply is difficult to guarantee

Images