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Double-layer PE co-extrusion wood-plastic plate and preparation method thereof

A wood-plastic board, double-layer technology, which is applied in the field of double-layer PE co-extruded wood-plastic board and its preparation, can solve problems such as instability, weather resistance and poor mechanical properties, and achieve improved aging resistance and increased use range, to overcome the effect of inconsistent product quality

Active Publication Date: 2020-06-05
ANHUI SENTAI WPC GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention effectively solves the problems of poor and unstable wood-plastic color, weather resistance and mechanical properties of recycled wood-plastic floors without increasing production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A double-layer PE co-extruded wood-plastic board, which includes an environmentally friendly base material composed of a first wood-plastic material and a weather-resistant surface layer composed of a second wood-plastic material. The thickness of the surface layer is one-sixth of the thickness of the environmental protection base material. In any case, the weather-resistant surface layer will cover the whole. Therefore, the surface layer has a two-layer structure, and the thickness of each layer is one-sixth of the thickness of the environmental protection base material, about 0.5mm , the first wood-plastic material is made of the first raw material including recycled wood-plastic board crushed material and wood and bamboo powder. Contains a terpolymer of acrylate, acrylonitrile and styrene, accounting for 1% by mass fraction of the first raw material. The second wood-plastic material is made of a second raw material comprising high-density polyethylene HDPE5502 and ba...

Embodiment 2

[0037] The difference from Example 1 is that the raw material of the weather-resistant surface layer is high-density polyethylene and wood flour in a weight ratio of 5:1, and the second raw material also contains 5% terpolymer, 5% oxidized polyethylene wax, and 14% filler, 3% coupling agent, 0.4% antioxidant, 3% UV-531, and 0.85% additive; the first raw material recycled wood-plastic material powder is twice the weight of wood powder, and the first raw material also contains Contains 3% terpolymer, 3% plasticizer, 4% lubricant and 1% gray pigment.

[0038] Beneficial effects of the present invention: 1) The mechanical properties of the product are superior to ordinary wood-plastic single extrusion products; 2) The core layer material has no color requirements, which increases the use range of waste materials; 3) The surface layer material adds a large amount of anti-UV and other anti-aging Light and heat stabilizing additives, the stability of product surface color, and weathe...

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Abstract

The invention discloses a double-layer PE (polyethylene) co-extrusion wood-plastic plate, which belongs to the field of new materials and comprises an environment-friendly base material made of a first wood-plastic material and a weather-proof surface layer made of a second wood-plastic material, and the environment-friendly base material is completely wrapped by the weather-proof surface layer; wherein the first wood-plastic material is prepared from a first raw material containing recycled wood-plastic plate crushed materials and wood-bamboo powder, and the second wood-plastic material is prepared from a second raw material containing newly-generated high-density polyethylene and wood-bamboo powder; the second raw material further comprises a weather-proof stabilizer; at least one surface of the weather-proof surface layer is provided with a pressed groove, and the maximum depth of the groove is larger than the thickness of the weather-proof surface layer. The product is environment-friendly, low in production cost and good in surface color and texture, and compared with similar products in the prior art, the weather resistance of the product is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of wood-plastic material production, in particular to a double-layer PE co-extruded wood-plastic board and a preparation method thereof. Background technique [0002] The main material of wood-plastic outdoor flooring is PE and wood powder or bamboo powder. After adding additives and mixing at high speed, it is granulated, and then the pellets are extruded by an extruder to form a material. This type of floor can be used in gardens and villas. Wait for the outdoor platform. [0003] It is a new type of environmentally friendly high-tech material that has the properties and characteristics of wood and plastic and can replace wood and plastic. Its English abbreviation of Wood Plastic Composites is WPC. Wood-plastic flooring has the same processing characteristics as wood. It can be sawed, drilled, and nailed with ordinary tools. It is very convenient and can be used like ordinary wood. At the same time, it h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/20B32B9/00B32B9/04B32B21/02B32B21/08B32B3/30B32B33/00B32B27/06C08L23/06C08L97/02C08L23/30C08L25/12B29D7/01
CPCB32B27/32B32B27/20B32B5/16B32B3/30B32B27/06B32B33/00C08L23/06B29D7/01C08L2205/16C08L2207/062C08L2205/035B32B2250/02B32B2264/12B32B2264/067B32B2264/065B32B2307/714B32B2307/558B32B2419/04C08L97/02C08L23/30C08L25/12
Inventor 黄东辉唐道远张志勇
Owner ANHUI SENTAI WPC GRP CO LTD
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