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Wood plastic composite material composection and formed board thereof and their preparation process

A technology of wood-plastic composite materials and compositions, applied in the field of composite materials, can solve problems such as expensive structures, achieve the effect of improving biodegradability and reducing environmental pollution

Inactive Publication Date: 2007-07-18
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a very complicated and expensive device must be used to make the composite wood board have good mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The present invention also provides a method for preparing a wood-plastic composite material composition board, the method comprising molding the wood-plastic composite material composition into a plate shape, wherein the wood-plastic composite material composition is the wood-plastic composite material composition provided by the present invention Plastic composite material composition. Various methods can be used to form wood-plastic composite compositions into shaped panels. The specific operation of making a molded board from the wood-plastic composite material composition is well known to those skilled in the art, and will not be repeated here. Although the present invention provides a method for preparing a wood-plastic composite material composition and a method for preparing a molded board with a wood-plastic composite material composition, those skilled in the art will understand that the wood-plastic composite material composition provided by the present inven...

Embodiment 1

[0028] This example is used to illustrate the wood-plastic composite material composition and its preparation method provided by the present invention.

[0029] After drying 55 parts by weight of wood powder (shavings with a particle diameter of 100-200 microns) at a temperature of 120°C, mix with 1.2 parts by weight of aluminum titanate coupling agent in a high-speed mixer at 115°C for 15 minutes, and then mix with 3 parts by weight of nano-calcium carbonate (particle diameter is 50-100 nanometers), 35 parts by weight of polypropylene (weight average molecular weight is 250000), 4 parts by weight of epoxy soybean oil, 1.8 parts by weight of antioxidant 1010 are mixed at 115 ℃ for 20 Minutes to obtain a uniform material, transfer the obtained material to a φ65 / 132 conical twin-screw extruder for plasticization, and the heating temperatures of each section in the twin-screw extruder are 155°C, 165°C, 175°C, 180°C ℃, 175℃; the pressure is 9-15 MPa, the screw speed is 15 rpm; the...

Embodiment 2

[0031] This example is used to illustrate the wood-plastic composite material composition and its preparation method provided by the present invention.

[0032] Dry 60 parts by weight of wood flour (shavings with a particle diameter of 100-200 microns) at 120°C and mix with 5 parts by weight of aluminate coupling agent in a high-speed mixer at 95°C for 10 minutes, then mix with 10 Parts by weight of nano diatomaceous earth mica (particle diameter is 30-80 nanometers), 20 parts by weight of polyethylene (weight average molecular weight is 350000), 4 parts by weight of pentaerythritol, and 1 part by weight of urea aqueous solution with a concentration of 50% by weight at 85° C. Mix for 50 minutes to obtain a uniform material, transfer the obtained material to a φ65 / 132 conical twin-screw extruder for plasticization, and the heating temperatures of each section in the twin-screw extruder are 155°C, 165°C, and 175°C respectively , 180°C, 175°C; the pressure is 9-15 MPa, and the sc...

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Abstract

The present invention provides one kind of wood-plastic composition, which contains wood powder and resin as well as nanometer particle of size below 100 nm. The wood-plastic composition with nanometer particle has hardness greater than 56HRR and heat distortion temperature higher than 105 deg.c. It may be produced into plate used widely for building, transportation, packing, household decoration and daily use article.

Description

technical field [0001] The invention relates to a composite material, in particular to a wood-plastic composite material composition, a molding board containing the composition and a preparation method thereof. Background technique [0002] In recent years, due to global environmental protection, the need to ensure forest resources and the high cost of wood, and in order to cope with the potential needs of wood products that are deeply rooted, development of composite materials that can replace wood in furniture and daily necessities and the use of composite materials have been developed. Synthetic wood panels obtained in order to obtain surface properties similar to natural wood. For example, CN 1032694C discloses a synthetic method of reactive wood flour polyurethane foam material, the method comprises the reaction of wood flour and polyether at 90-125°C in the presence of a catalyst to produce wood flour polyether, and then Foaming wood flour polyether and polyisocyanate...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L23/12C08L23/06C08L27/06C08K7/28C08K3/34C08K3/30C08L69/00C08L75/04C08L67/00
Inventor 秦特夫黄洛华
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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