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Preparing wood-plastic composite material with polyolefin (PE,PP)/oak powder/ionomer

A wood-plastic composite material and polyolefin technology, which is applied in the field of preparation of wood-plastic composite materials, can solve the problems of large polarity difference, poor surface smoothness, and small adhesion, so as to improve smoothness, improve processing fluidity, The effect of increased extrusion speed

Inactive Publication Date: 2006-08-23
高建国 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved by the present invention are: the polarity difference between wood flour and polyolefins is large, the compatibility is not good, the general wood-plastic composite products have low adhesion, poor surface smoothness, and poor fluidity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] PE / oak powder / ionomer=40 / 50 / 10, wherein the MFR of PE is 3.5g / 10min, and the oak powder is 100 mesh. Add PE, oak powder, and ionomer in proportion to the high-speed mixer and mix at a temperature of 80°C , for 20 minutes, the mixture was extruded in a parallel co-rotating twin-screw extruder, and the temperatures of each section of the screw were 180°C, 190°C, 200°C, and 185°C. The extrusion speed is 2m / min, and the extruded product is smooth and smooth. The properties of the composite material are: tensile strength 29.1MPa, impact strength 9.5kJ / m 2 , flexural strength 40MPa, flexural modulus 2050MPa.

Embodiment 2

[0015] PP / oak powder / ionomer=40 / 50 / 10, the MFR of PP is 0.5g / 10min, the oak powder is 100 mesh, mix PP, oak powder, and ionomer in a high-speed mixer in proportion, and the temperature is 100°C , time 30min, the mixture is extruded through a parallel co-rotating twin-screw extruder, and the temperature of each section of the screw is: 190°C, 200°C, 200°C, 185°C. The extrusion speed is 1.5m / min, the surface of the product is smooth and flat, the tensile strength is 33.2MPa, and the impact strength is 8.5kJ / m 2 , flexural strength 45MPa, flexural modulus 2500MPa.

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PUM

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Abstract

The present invention provides a preparation process of wood-plastic composite material, and features that polyolefin and wood powder as main material and ionic polymer as compatilizer accounting for 5-10 wt% of the mixed material are mixed in a high speed mixer for 20-40 min at the temperature lower than 100 deg.c, and the mixture is then formed through extrusion or mold injection. Compared with available technology, the product has the advantages of high hardness, high strength, smooth surface, etc. and may be used widely in door and window, floor, wall, etc.

Description

Technical field: [0001] The invention relates to a method for preparing wood-plastic composite materials from polyolefin (PE, PP) / oak powder / ionomer, specifically a method for preparing wood-plastic composite materials using polyolefin and oak powder as main ingredients . Background technique: [0002] The wood-plastic composite material formed by wood fiber, wood powder and thermoplastic polymer is an emerging new type of composite material with broad development and application prospects in the world today. Because it combines the advantages of plastic and wood, it has long service life, beautiful appearance, renewable, low cost, insect-proof, anti-corrosion, anti-skid, sprayable, higher hardness than pure plastic products, and can be processed and bonded like wood Therefore, wood-plastic composite materials are widely used in building materials for doors, windows, floors, walls, ship materials, fence materials, furniture materials, automotive materials, etc. Wood-plasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L97/02B29C47/40
Inventor 高建国李炳海刘文鹏
Owner 高建国
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