Efficient compatilizer for polyolefin-based wood-plastic composite

Abstract

The invention discloses an efficient compatilizer for a polyolefin-based wood-plastic composite, and belongs to the field of efficient compatilizers. According to the efficient compatilizer for the polyolefin-based wood-plastic composite, in the EAA extruding process, a hydroxyl functional monomer, namely 2-propenoic acid-2-hydroxyl-3-phenoxypropyl ester, and another hydrophobic monomer, namely hexadecyl methacrylate, with the synergistic effect are added and subjected to a grafting reaction on EAA molecular chains under the effect of DCP, and thus an EAA graft polymer is formed. The preparedEAA graft polymer serves as the compatilizer for the polyolefin-based wood-plastic composite, thus compatibility and hydrophobic performance of waste plant fibers such as wood flour in polyolefin canbe greatly improved, an outer sheath with a display layer is arranged at the outer end of a screw rod, thus abrasion information is given to workers in time, thus workers replace the outer sheath conveniently, and the screw rod is protected against being prone to breaking.

Description

technical field [0001] The invention relates to the field of high-efficiency compatibilizers, in particular to a high-efficiency compatibilizer for polyolefin-based wood-plastic composite materials. Background technique [0002] Olefin-based wood-plastic composite material is a new type of green and environmentally friendly material. It is a new wood material made of polyethylene, polypropylene, etc. and more than 50% of waste plant fibers such as wood powder, rice husk, and straw. [0003] However, since waste plant fibers such as wood powder have strong water absorption and strong polarity, and polyolefins such as polyethylene and polypropylene are non-polar polymers, therefore, in the production process of polyolefin-based wood-plastic composite materials It is necessary to add a compatibilizer to improve the interfacial affinity between wood flour and polyolefin-based base materials, and the existing compatibilizers in daily life are not effective in improving the compat...

AI Technical Summary

Problems solved by technology

[0003] However, since waste plant fibers such as wood powder have strong water absorption and strong polarity, and polyolefins such as polyethylene and polypropylene are non-polar polymers, therefore, in the production process of polyolefin-based wood-plastic composite materials It is necessary to add a compatibilizer to improve the interfacial affinity between wood flour and polyolefin-based base materials, and the existing compatibilizers in daily life are not effective in improving the compatibility and hydrophobicity of waste plant fibers and polyolefins. In addition, it is necessary to improve the mechanical properties of polyolefin-based wood-plastic composite materials in order to expand its application range. In addition, during the production process of the compatibilizer, when the compatibilizer raw material enters the extruder from the hopper, it is not heated enough and melts. Uneven, dry friction usually occurs, which can easily cause increased wear on the inner wall of the barrel and the surface of the screw, resulting in easy breakage of the screw and increased costs

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