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Wood plastic foamed material and machine-shaping process thereof

A wood-plastic foaming and processing molding technology, which is applied in the field of wood-plastic foaming materials and their processing and molding technology, can solve the problems of high material weight, light weight, high impact resistance and heat insulation, etc., and achieve high specific strength Effect

Inactive Publication Date: 2004-03-17
北京欧尼克新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further product research and development and user feedback indicate that the density of profiled materials made of wood-plastic composite materials is generally around 1.1-1.4, which makes the material relatively high in weight and cannot meet the requirements of light weight, impact resistance, and high heat insulation. Some pure plastic foaming technologies, combined with the characteristics of wood-plastic materials, we invented wood-plastic foaming materials and their processing and molding technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The following raw materials are used:

[0032] PE 20 copies

[0033] 65 parts wood flour

[0034] Light calcium carbonate 8 parts

[0035] Phase solvent (MHA-g-PE) 4 parts

[0036] 1 part coupling agent

[0037] Lubricant (Hst) 1 part

[0038] Foaming agent (Ac) 0.5 part

[0039] Foaming aid (ZnO) 0.5 parts

[0040] Put the wood flour into the high-speed mixer, dry it at 110-120°C, add modifiers to activate the wood flour, add additives, plastics and foaming agents and mix evenly, and discharge the material at a material temperature of 120°C Cool to 40°C in a cold mixer to form a foamable mixture.

[0041] Put the mixture into φ65 / 132 conical twin-screw extruder, heating temperature: 155°C, 165°C, 175°C, 180°C, 175°C; melt pressure 9-15Mpa; melt temperature 165-170°C ; Host speed 10-15rpm / min.

[0042] After foaming and cooling in a specially designed mold, it is shaped into wood-plastic foamed products of various shapes with continuous and evenly distributed f...

Embodiment 2

[0044] The following raw materials are used:

[0045] PP 45 parts

[0046] 45 parts wood flour

[0047] 5 parts of hollow glass microspheres

[0048] Phase solvent (MHA-g-PE) 1.5 parts

[0049] 0.5 parts of coupling agent

[0050] Lubricant (Hst) 0.2 parts

[0051] Antioxidant 0.5 parts

[0052] 0.2 parts of cross-linking agent

[0053] Auxiliary cross-linking agent 1 part

[0054] Foaming agent (Ac) 0.6 part

[0055] Foaming aid (ZnO) 0.5 parts

[0056] Put the wood flour into the high-speed mixer, dry it at 110-120°C, add modifiers to activate the wood flour, add additives, plastics and foaming agents and mix evenly, and discharge the material at a material temperature of 120°C Cool to 40°C in a cold mixer to form a foamable material.

[0057] The foamable material is put into a φ65 single-screw extruder, the processing temperature is: 175°C, 195°C, 210°C, 195°C; the screw speed is 40rpm / min.

[0058] After foam molding in a hot compression molding machine, it is ...

Embodiment 3

[0060] The following raw materials are used:

[0061] PE 65 parts

[0062] 25 parts wood flour

[0063] Precipitated barium sulfate 4 parts

[0064] Phase solvent 2.5 parts

[0065] 0.5 parts of coupling agent

[0066] Lubricant 1 part

[0067] Foaming agent (Ac) 1.5 parts

[0068] Foaming aid (ZnO) 0.5 part

[0069] Put the wood flour into the high-speed mixer, dry it at 110-120°C, add modifiers to activate the wood flour, add additives, plastics and foaming agents and mix evenly, and discharge the material at a material temperature of 120°C Cool to 40°C in a cold mixer to form a foamable material.

[0070] The foamable material was put into a φ65 single-screw extruder, the processing temperatures were: 160°C, 170°C, 185°C, 170°C; the screw speed was 35rpm / min.

[0071]After foam molding in a hot compression molding machine, it is formed into a wood-plastic foam product with continuous and evenly distributed foam micropores, and the density is 0.45-0.6.

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PUM

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Abstract

The foamed wood-plastic material is produced with plastic, wood dust, mineral stuffing, assistant, modifier, foaming agent, etc. in certain proportion and through mixing, heating to fusion, foaming and forming in a heat forming apparatus. It has continuous homogeneous pores, and is light, high in specific strength, waterproof, anticorrosive and heat insulating, and may be nailed, sawn and planed, so that it may be used widely in building, transportation, packing, household decoration and daily use articles.

Description

Technical field: [0001] The invention relates to a wood-plastic foam material and its processing and molding technology. Background technique: [0002] The inventor once submitted a patent application about plastic-wood profiles in November 2000, the application number being 00132561.2. Further product research and development and user feedback indicate that the density of profiled materials made of wood-plastic composite materials is generally around 1.1-1.4, which makes the material relatively high in weight and cannot meet the requirements of light weight, impact resistance, and high heat insulation. Some pure plastic foaming technologies, combined with the characteristics of wood-plastic materials, we invented wood-plastic foam materials and their processing and molding technology. Invention content: [0003] The purpose of the present invention is to solve the deficiencies of the prior art, and provide a wood-plastic foam material and its processing and molding proce...

Claims

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Application Information

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IPC IPC(8): C08J9/00C08L23/02C08L25/06C08L27/06C08L55/02
Inventor 韩伟贾正华宣德庆
Owner 北京欧尼克新型材料有限公司
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