Wood-plastic composite material prepared from waste and old plastic mixer and preparation method thereof

A technology for wood-plastic composite materials and waste plastics, applied in the field of wood-plastic composite materials and their preparation, can solve the problem that the modified plastic blend loses active acid anhydride groups, hinders the effective progress of the plastic grafting reaction, and the maleic anhydride cannot be fully Reaction and other problems, to achieve the effect of direct utilization, saving sorting steps, and improving mechanical properties

CN101215420AActive Publication Date: 2008-07-09广东海鹏竹材研究开发有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-07-09
Patent Text Reader

Abstract

The invention relates to a wood-plastic composite material which is prepared by waste-old plastic mixture and a process for preparation, which relates to a wood-plastic composite material and a process for preparation. The invention solves the problems that the mechanical properties of the wood-plastic composite material which is prepared by the existing waste-old plastic mixture are bad and the like. The wood-plastic composite material is prepared by wooden fiber material, modified waste-old plastic blend and lubricating agent. the process for preparing comprises preparing modified waste-oldplastic blend, and then mixing the wooden fiber material, the modified waste-old plastic blend and the lubricating agent, and further adopting a continuous extrusion modeling technique, at last, getting wood-plastic composite material. Compared with the prior art, the bending strength of the wood-plastic composite material of the invention is improved by 30%-60%, and the impact strength is improved by 58%-140%. The process for preparing the wood-plastic composite material of the invention not only has simple technique and high production efficiency, but also reinforces the interface combination of the modified waste-old plastic blend and wooden fiber material, and the invention improves the mechanical properties of wood-plastic composite material.
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Description

technical field

[0001] The invention relates to a wood-plastic composite material and a preparation method thereof. Background technique

[0002] Wood-plastic composite material is a new type of material formed by combining plastic with wood, bamboo, straw and other lignocellulosic materials. It has the dual performance advantages of plastic and wood materials. When waste plastics and wood processing residues or straw are used as the main production raw materials, wood-plastic composite materials have outstanding advantages in resource utilization and environmental protection, so they have developed rapidly in developed countries.

[0003] In order to ensure the stability of the production process and the necessary product performance, the current international actual production usually uses a single sorted waste plastic (such as polyethylene or polypropylene) as processing raw materials. However, in developing countries, especially China, recycled waste plastics are usuall...

Examples

specific Embodiment approach 1

[0016] Specific Embodiment 1: The wood-plastic composite material prepared from waste plastic mixture in this embodiment consists of 50-110 parts by weight of lignocellulosic material, 10-80 parts of modified waste plastic blend and 0.2-2 parts The lubricant is made; wherein the modified waste plastic blend is made of 100 parts of waste plastic mixture, 0.1-2 parts of maleic anhydride and 0.01-0.2 parts of dicumyl peroxide in the ratio of parts by mass.

[0017] In this embodiment, maleic anhydride is used as a graft monomer, and dicumyl peroxide is used as an initiator. In this embodiment, the lignocellulosic material is wood processing residue or straw.

specific Embodiment approach 2

[0018] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the wood-plastic composite material prepared from the waste plastic mixture consists of 60-100 parts by weight of wood fiber material and 15-60 parts of modified It is made of waste plastic blend and 0.3-1.8 parts of lubricant. Others are the same as the first embodiment.

specific Embodiment approach 3

[0019] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the wood-plastic composite material prepared from waste plastic mixture consists of 70-90 parts by weight of wood fiber material and 20-40 parts of modified It is made of waste plastic blend and 0.5-1.5 parts of lubricant. Others are the same as the first embodiment.