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A kind of preparation method of wood-like wood-plastic co-extrusion profile

A technology of extruding profiles and wood plastics, which is applied in the field of imitation wood-wood plastics co-extrusion profiles, which can solve the problems of unnatural appearance, poor UV resistance, easy fading and deformation, etc., to achieve a sense of hierarchy, not easy to fade, and slow aging speed Effect

Active Publication Date: 2019-11-22
NINGBO HELONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of poor UV resistance, easy fading and deformation, and unnatural appearance in the prior art, the present invention provides a preparation method for wood-like wood-plastic co-extruded profiles
[0004] The invention solves the problems of poor UV resistance, easy fading and deformation, and unnatural appearance. This design adds anti-ultraviolet masterbatch to the raw materials to form a protective layer on the surface of wood-plastic materials to block ultraviolet rays

Method used

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  • A kind of preparation method of wood-like wood-plastic co-extrusion profile
  • A kind of preparation method of wood-like wood-plastic co-extrusion profile
  • A kind of preparation method of wood-like wood-plastic co-extrusion profile

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Embodiment 1

[0031] Such as figure 1 As shown, the slash part represents the outer layer, and the core layer is between the outer layer and the outer layer. A wood-like wood-plastic co-extrusion profile to be prepared, including a core layer and an outer layer, in parts by weight, the core layer raw materials include 55 parts of wood powder, 30 parts of plastic, 5 parts of lubricant, and 5 parts of coupling agent , 5 parts of toner; the outer layer raw materials include 53 parts of high-density polyethylene with a molecular weight range of 40,000-300,000, 30 parts of sarin resin, 6 parts of color masterbatch, and 4 parts of anti-ultraviolet masterbatch; the outer layer is wrapped on the surface of the core layer . The outer material also includes 1 part ethylene acrylic acid copolymer and 7 parts polypropylene.

[0032] Lubricants are used to reduce the melting pressure, improve fluidity, and obtain a suitable extrusion speed during the melting and extrusion of materials; coupling agents...

Embodiment 2

[0043] A wood-like wood-plastic co-extrusion profile prepared in this example includes a core layer and an outer layer. In parts by weight, the raw materials for the core layer include 55 parts of wood powder, 30 parts of plastic, 5 parts of lubricant, and a coupling agent. 5 parts, 5 parts of toner; the outer layer raw materials include 40 parts of high-density polyethylene with a molecular weight range of 40,000-300,000, 40 parts of sarin resin, 5 parts of color masterbatch, and 5 parts of anti-ultraviolet masterbatch; the outer layer is wrapped in the core layer surface. The outer material also includes 5 parts of ethylene acrylic acid copolymer and 5 parts of polypropylene.

[0044] In the composite process of wood and plastic materials, because there are a large number of polar hydroxyl groups on the surface of wood fiber, it is hydrophilic, while the surface of plastic is hydrophobic. In order to make the interface between the two compatible, ethylene acrylic acid copoly...

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Abstract

The invention relates to the technical field of synthetic-wood production, and in particular discloses a wood-like synthetic-wood common-squeezing material and a preparation method thereof. A common synthetic-wood material has the problems of being relatively fragile in texture and easy to age, and high-density polyethylene, an ethylene acrylic acid copolymer, anti-ultraviolet master batch and surlyn resin are added to raw materials of the wood-like synthetic-wood common-squeezing material. In the preparation process, the head of a squeezer is connected with the cylinder of another squeezer, then an outer-layer material can be molten simultaneously by using the two squeezers, and the outer-layer material is squeezed to a common-squeezing mold to form an outer layer. At the same time, a third squeezer is adopted to melt a core-layer material, then a core layer can be formed by using the common-squeezing mold, and a finished product can be manufactured through procedures such as knurling and polishing. The synthetic-wood material disclosed by the invention is relatively good in tensile property, impact resistance and bending resistance and good in adhesion property of inner and outer layers. The surface of the synthetic-wood material is capable of preventing ultraviolet rays, chemical medicines and wearing, and is slow in aging speed and not liable to fade. In addition, the surface of the material can be relatively natural and vivid, and the synthetic-wood material is relatively true in wood simulation effect, and relatively good in layering.

Description

technical field [0001] The invention relates to the technical field of wood-plastic production, in particular to the design of a method for preparing wood-like wood-plastic co-extrusion profiles. Background technique [0002] Wood-plastic material is a new type of environmentally friendly material that has only been developed in recent years. It is made of polyethylene, polypropylene and polyvinyl chloride, etc., and about 35%-70% of wood powder, rice husk, straw and other waste. Plant fibers are mixed into new wood materials, and then processed by extrusion, molding and other plastic processing techniques to produce boards. However, wood-plastic materials also have shortcomings that cannot be ignored. The most common problems are poor heat resistance and UV resistance. When exposed to strong sunlight or overheated environments for a long time, wood-plastic materials are prone to discoloration, deformation, and even cracking. At the same time, the raw material itself determ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/02B32B9/04B32B27/32C08L23/06C08L23/08C08L23/12C08L97/02C08L101/00B29C48/17B29C48/21B29L9/00B29L23/00
CPCB29C48/002B29C48/0022B29C48/09B29C48/175B29C48/21B29L2009/00B29L2023/22B32B9/02B32B9/045B32B27/32C08L23/06C08L97/02C08L2201/08C08L2205/025C08L2205/035C08L23/0869C08L23/12C08L101/00
Inventor 马庆江徐志平周云张冰宁娈郭金梅倪妮
Owner NINGBO HELONG NEW MATERIAL
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