A kind of halogen-free flame-retardant polyolefin material and its preparation method and application

Abstract

The invention discloses a zero-halogen flame-retardant polyolefin material and a preparation method as well as application thereof. The zero-halogen flame-retardant polyolefin material comprises a polyolefin substrate at least comprising ethylene-vinyl acetate copolymer, a zero-halogen flame retardant, ethylene-vinyl acetate copolymer grafted with maleic anhydride serving as a compatilizer and anadditive, and is characterized in that: the ethylene-vinyl acetate copolymer grafted with maleic anhydride is used as a compatilizer for the zero-halogen flame-retardant polyolefin material. The grafting rate of the compatilizer is higher (about 1 percent), can be used as a high molecular compatilizer and toughening agent, is used for improving the interfacial compatibility of a composite material and has low requirement on production equipment and high efficiency; the prepared polyolefin material has high performance; and the strength and the extensibility of the material are obviously improved.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant polyolefin material and its preparation method and application. Background technique [0002] In 2002, the European Union enacted the "Electronic Waste Disposal Law" consisting of two directives, one of which is the "Directive on the Prohibition of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment" (ROHS). The ROHS Directive requires that electrical and electronic products put on the EU market after July 1, 2006 must not contain six harmful substances including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers. At the beginning of 2004, the Ministry of Information Industry of the People's Republic of China formulated the "Administrative Measures for the Prevention and Control of Pollution by Electronic Information Products" (referred to as the "Measures") in accordance with the "Clean Production Promotion Law", "So...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the halogen-free flame-retardant polyolefin materials developed in China use commercially available or melt-grafted maleic anhydride ethylene-vinyl acetate copolymer (EVA-g-MAH) as a compatibilizer. Complicated, and in the production process, the initiator and antioxidant compete with each other, and the grafting reaction and crosslinking reaction proceed simultaneously, so the quality of the compatibilizer is difficult to control, and if it is not properly controlled, it will have an adverse effect on the performance of the final product

However, the method for preparing EVA-g-MAH compatibilizer in the prior art also needs to be irradiated with electron rays or gamma rays, which is cumbersome and requires high equipment requirements.