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Multilayer plastic-wood composite board and preparation method thereof

A technology for wood-plastic composite materials and boards, which is applied in the fields of structural materials and their preparation, multi-layer wood-plastic composite materials and their production fields, and can solve the problem of low nail holding force of foamed porous plastic-wood composite materials and solid plastic-wood composite materials. Cumbersome, inconvenient transportation, installation and other problems, to achieve the effect of strong anchoring force, high rigidity and simple structure

Inactive Publication Date: 2014-05-28
G&S HUZHOU ENTERPRISES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But despite this, there are also certain defects in wood-plastic composite materials. For example, solid wood-plastic composite materials are bulky, inconvenient to transport and install, easy to warp and deform, and relatively high in cost. smaller, less powerful, etc.

Method used

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  • Multilayer plastic-wood composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Example 1: A multi-layer plastic-wood composite material board and a preparation method thereof, the preparation process is:

[0086] (1) Weigh benzene and ethanol at a mass ratio of 1:1 to prepare a mixed solvent. Use the mixed solvent to extract the wood flour at 90°C for 8 hours to remove the wax in the wood flour, and then rinse the wood flour with tap water for 45 minutes. After drying to absolute dryness, modified wood powder is obtained;

[0087] (2) Mix polyethylene, modified wood powder (120 mesh), maleic anhydride grafted polyethylene, ultraviolet absorber, nano silicon dioxide (30nm), and glyceryl stearate in the following parts by weight, then use The extruder extrudes the molten material flow on the surface of the solid wood plastic composite material, the extrusion temperature is 170℃:

[0088] Polyethylene 25

[0089] Modified wood flour 100

[0090] Maleic anhydride grafted polyethylene 4

[0091] UV absorber 0.09

[0092] Nano silica 0.4

[0093] Glyceryl stearate...

Embodiment 2

[0110] Embodiment 2: A multi-layer plastic-wood composite material board and its preparation method and its preparation method, the preparation process is:

[0111] (1) Weigh benzene and ethanol at a mass ratio of 1:1 to prepare a mixed solvent. Use the mixed solvent to extract the wood flour at 85°C for 6 hours to remove the wax in the wood flour, and then rinse the wood flour with tap water for 30 minutes. After drying to absolute dryness, modified wood powder is obtained;

[0112] (2) Mix polyethylene, modified wood powder (80 mesh), maleic anhydride grafted polyethylene, ultraviolet absorber, nano silicon dioxide (20nm), and glyceryl stearate in the following parts by weight before use The extruder extrudes the molten material flow on the surface of the solid wood plastic composite material, the extrusion temperature is 160℃:

[0113] Polyethylene 20

[0114] Modified wood flour 100

[0115] Maleic anhydride grafted polyethylene 2

[0116] UV absorber 0.06

[0117] Nano silica 0.2

...

Embodiment 3

[0135] Embodiment 3: A multi-layer plastic-wood composite material board and its preparation method and its preparation method, the preparation process is:

[0136] (1) Weigh benzene and ethanol at a mass ratio of 1:1 to prepare a mixed solvent. Use the mixed solvent to extract the wood flour at 95°C for 10 hours to remove the wax in the wood flour, and then rinse the wood flour with tap water for 60 minutes. After drying to absolute dryness, modified wood powder is obtained;

[0137] (2) Mix polyethylene, modified wood powder (160 mesh), maleic anhydride grafted polyethylene, ultraviolet absorber, nano silicon dioxide (40nm), and glyceryl stearate in the following parts by weight before use The extruder extrudes the molten material flow on the surface of the solid wood plastic composite material, the extrusion temperature is 180℃:

[0138] Polyethylene 30

[0139] Modified wood flour 100

[0140] Maleic anhydride grafted polyethylene 6

[0141] UV absorber 0.12

[0142] Nano silica 0.6...

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Abstract

A multilayer plastic-wood composite board includes a solid plastic-wood surface layer, a porous plastic-wood sandwich layer, and a solid plastic-wood core layer, wherein the sandwich layer is located between the surface layer and the core layer; the surface layer is formed through the melt blending and extrusion of polyethylene, modified wood powder, maleic anhydride grafted polyethylene, an ultraviolet light absorber, nano-silica and glyceryl stearate; the sandwich layer is formed through the melt blending and extrusion of polyethylene, modified wood powder, maleic anhydride grafted polyethylene, 4, 4'-oxybis (benzenesulfonyl hydrazide), citric acid, sodium bicarbonate and talcum powder; the core layer is formed through the melt blending and extrusion of polyethylene, modified wood powder, maleic anhydride grafted polyethylene, calcium carbonate powder, stearic acid and chlorinated polyethylene. The multilayer plastic-wood composite board provided by the invention has a reasonable design and a simple structure, and is convenient to manufacture; compared with other plastic-wood boards, the multilayer plastic-wood composite board has the advantages of larger surface strength, high hardness and rigidity, light weight, low costs for production, transportation and installation, as well as strong bolt anchoring force, and is applicable for the manufacture of indoor and outdoor floors, guardrails, decorative boards, and the like.

Description

Technical field [0001] The invention relates to a multi-layer plastic-wood composite material board and a preparation method thereof, which relate to a composite material, a structural material and a preparation method thereof, and are suitable for making indoor and outdoor floors, guardrails, decorative boards and the like. Background technique [0002] People have an affinity for wood, and home decoration cannot do without wood. However, the wood itself has its own shortcomings, easy to shrink and crack, easy to deform when exposed to water, easy to mold when exposed to moisture, and easy to burn when exposed to fire. If it is made into plywood, formaldehyde will also cause indoor pollution. However, the plastic-wood composite material formed with wood flour and plastic as the main raw material, supplemented by other additives can maintain the advantages of wood and overcome the disadvantages of wood. After more than ten years of research, development and industrial applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/32B32B27/18C08L23/06C08L97/02C08L51/06C08L23/28C08K3/36C08K5/103C08K5/092C08K3/26C08K3/34
Inventor 周才良吕战强其他发明人请求不公开姓名
Owner G&S HUZHOU ENTERPRISES
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