Maleic anhydride grafted polypropylene material

Abstract

The invention discloses a maleic anhydride grafted polypropylene material. Maleic anhydride, polypropylene and an assistant grafting monomer are grafted under the effects of an initiator and an antioxidant to obtain the maleic anhydride grafted polypropylene material. The used assistant grafting monomer can play a role of increasing the grafting ratio and inhibiting the polypropylene to be degraded, and therefore the grafting ratio is effectively increased. Meanwhile, a new initiator is introduced to reduce the pungent smell of the maleic anhydride grafted polypropylene material, and the degree of grafting reaction and the degree of copolymerization of the assistant monomer are enhanced, so that the prepared product has a high grafting ratio and low pungent smell.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a maleic anhydride grafted polypropylene material. Background technique [0002] With the development of domestic polypropylene modified materials, there are more and more studies on compatibilizers used in polypropylene modified materials. Since the polypropylene material itself is a non-polar material, its miscibility with polar materials such as fillers and glass fibers is relatively poor. The easiest way to improve the miscibility is to add a compatibilizer. At present, the most commonly used compatibilizer is maleic anhydride grafted polypropylene, which can effectively improve the compatibility between polypropylene materials and polar materials. [0003] The production methods of maleic anhydride grafted polypropylene mainly include melt extrusion grafting method, solution grafting method, solid phase grafting method and suspension grafting method. The most commonly used...

AI Technical Summary

Problems solved by technology

Such as Chinese patent literature "Polypropylene grafted maleic anhydride compatibilizer" (CN1456430A), "A preparation method of a maleic anhydride grafted polypropylene resin graft" (CN101724128A), "A maleic anhydride grafted Branched polypropylene material and its preparation method" (CN101357968A), "A melt-extruded low-odor PP grafted maleic anhydride and its preparation method" (CN101942061A) respectively recorded the use of adding oleic acid, styrene, acrylic acid, acrylic acid Esters, etc., are used as the second monomer to increase the grafting rate, but it has been proved by practice that some of these added second monomers lack theoretical basis (such as oleic acid), and although some can increase the grafting rate in theory, they can be practical. The experimental effect is not obvious

In addition, although the use of styrene as the second monomer can improve the grafting rate, styrene is a toxic substance with a strong pungent odor, which is likely to cause production safety problems and introduce new pungent odors into the product