A kind of environment-friendly interfacial compatibilizer and preparation method thereof

Abstract

The invention relates to an environment-friendly interface compatibilizer. The environment-friendly interface compatibilizer is characterized by comprising the following components by weight: 60-90 parts of linear low density polyethylene (LLDPE), 2-15 parts of glycidyl methacrylate, 1-10 parts of methylacryloyloxy silane, 5-15 parts of polystyrene-polyethylene-polybutylene-polystyrene copolymer and 1-5 parts of polyethylene glycol. The invention also relates to a preparation method of the compatibilizer. The environment-friendly interface compatibilizer has the advantages that LLDPE firstly generates alkyl hydroperoxide through irradiation, generates free radicals with activities by losing -OH- and carries out graft copolymerization with unsaturated bonds -C=C- in methylacryloyloxy silane and glycidyl methacrylate under the condition of heating; double-active groups are grafted onto a nonpolar polyethylene chain, thus endowing polyethylene with greater polarity and activity and effectively increasing the grafting ratio of the compatibilizer.

Description

Technical field [0001] The present invention relates to the technical field of interface compatibilizers, in particular to an environmentally friendly interface compatibilizer applied to wood-plastic composite materials. The present invention also relates to a preparation method of the above-mentioned interface compatibilizer. Background technique [0002] Wood-plastic composite materials are an effective way to recycle low-quality waste wood and plastics. The preparation of wood-plastic composite materials can not only be used as waste and reduce environmental pollution, but also can solve some defects in the performance of a single material. This environmentally friendly material has the advantages of long life, high hardness, easy forming and processing, wear resistance, low water absorption, and aging resistance, and can be used in furniture, construction, industry and other fields. However, because wood fiber contains a large number of hydroxyl groups, it is hydrophilic; and...

AI Technical Summary

Problems solved by technology

[0005] (1) Maleic anhydride is usually only directly connected to the main chain of long polyolefin in the form of a monomer, and the grafting rate is very low, resulting in poor melt fluidity of the prepared interfacial compatibilizer;

[0006] (2) The lower grafting rate is easy to reduce the heat distortion temperature of the plastic alloy, causing excessive entanglement, crosslinking and degradation of the blend components, making the reaction difficult to control;

[0007] (3) Since the amount of wood fiber added in wood-plastic composites is very high, generally above 60%, it is necessary to use a large amount of maleic anhydride and corresponding solvents in the process of preparing compatibilizers. On the other hand, the production cost of the compatibilizer also leads to excessively high residues of maleic anhydride, which is more toxic and harmful to the environment

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