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Environmentally-friendly mould-proofing wood-plastic composite material and preparation method thereof

A kind of wood-plastic composite material and environment-friendly technology, which is applied in the field of wood-plastic composite material and its preparation, can solve problems such as mildew, and achieve the effects of improving mildew resistance, good mechanical properties, and improving compatibility and interface affinity

Active Publication Date: 2013-05-15
GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an environment-friendly mildew-proof wood-plastic composite material without adding any anti-mold agent and its preparation method in view of the mildew problem that occurs in the application process of existing wood-plastic materials and products

Method used

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  • Environmentally-friendly mould-proofing wood-plastic composite material and preparation method thereof
  • Environmentally-friendly mould-proofing wood-plastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take a certain amount of pine wood powder with a particle size of 40 mesh, add it to a container filled with a mass fraction concentration of 18% NaOH alkali solution, stir and soak for 24 hours, wash the wood powder with clean water until it is neutral, and then put the wood powder in an oven to dry Dry. Add the wood powder treated and dried with NaOH into the high-speed mixer, heat up while stirring, and then add the titanate coupling agent with 4% wood powder mass in two times, stir for 3 minutes each time, stir well and then low speed Mix and cool to 40°C and discharge to obtain modified pine wood powder.

[0025] Weigh 100 parts of the HDPE plastic matrix prepared above, 100 parts of modified pine wood powder, 15 parts of active calcium carbonate, 3 parts of stearic acid, 7704 parts of light stabilizer, 2 parts of toner, and talcum powder according to the ratio of parts by weight. 1 part, 0.5 part of diatomaceous earth, put the above raw materials into a high-spee...

Embodiment 2

[0027] Take a certain amount of poplar wood powder with a particle size of 80 mesh, add it to a container filled with a mass fraction concentration of 15% NaOH alkali solution, stir and soak for 36 hours, wash the wood powder with clean water until it is neutral, and then put the wood powder in an oven drying. Add the poplar wood powder treated with lye and dried into a small mixer, add toluene diisocyanate with a weight of 1.0% of the wood powder, stir and mix for 30 minutes, and discharge to prepare the modified poplar wood powder.

[0028] Accurately weigh 100 parts of the above prepared PP plastic substrate, 80 parts of modified poplar wood powder, 12 parts of activated calcium carbonate, 3 parts of PE wax, 5404 parts of light stabilizer, 2 parts of toner, and talc according to the ratio of parts by weight. 1 part of powder, 1 part of diatomaceous earth, put the above raw materials into a high-speed mixer, stir and mix at a high speed for 10 minutes under the conditions of...

Embodiment 3

[0030] Take a certain amount of cypress powder with a particle size of 60 mesh, add it to a container filled with a 15% NaOH alkali solution, stir and soak for 36 hours, wash the wood powder with clean water until it is neutral, and then put the wood powder in an oven to dry Dried and set aside. Put the alkali-treated and dried wood flour into a high-speed mixer, add 2% of the mass of wood flour at 60°C and spray the wood flour with vinyltrimethoxysilane diluted to 5% with 95% ethanol solution , After spraying, stir and mix for 30 minutes before discharging, let it air for 12 hours at room temperature, put it into an oven, and dry it at 105°C for 24 hours to obtain modified cedar wood powder.

[0031]Weigh 120 parts of modified cypress powder prepared above, 100 parts of HDPE plastic substrate, 15 parts of activated calcium carbonate, 3 parts of paraffin, 6224 parts of light stabilizer, 1 part of toner, and 2 parts of talcum powder according to the ratio of parts by weight. ,...

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Abstract

The invention discloses an environmentally-friendly mould-proofing wood-plastic composite material and a preparation method thereof. The preparation method comprises the following steps: mixing a plastic substrate, modified wood fiber powder, calcium carbonate, a lubricant, a light stabilizer, a toner and other components in parts by mass; adding the mixture to a high-speed mixer; uniformly stirring; mixing for 6 to 15 minutes at a high speed and at a temperature of 100-120 DEG C and a revolving speed of 700 to 100 revolutions per minute; cooling; discharging to obtain a premix; adding the premix to a parallel twin-screw machine to granulate and extrude, wherein the temperature is controlled to 150-185 DEG C, and screws are at a revolving speed of 280 to 320 revolutions per minute during granulating, the temperature is controlled to 155-190 DEG C, and the screws are at a revolving speed of 10 to 15 revolutions per minute during extruding; thus obtaining the environmentally-friendly mould-proofing wood-plastic composite material. The environmentally-friendly mould-proofing wood-plastic composite material is high in mould proofing performance and mechanical performance, and is environmentally-friendly.

Description

technical field [0001] The invention relates to a wood-plastic composite material and a preparation method thereof, in particular to an environment-friendly mildew-proof wood-plastic composite material and a preparation method thereof. Background technique: [0002] Wood-plastic composite material is a new type of material made of natural fiber, thermoplastic resin and specific processing aids. It has the advantages of both wood and plastic, and is of great significance in environmental protection and alleviating the lack of forest resources. [0003] In the early days of the development of wood-plastic materials, most people believed that wood-plastic composites had sufficient fungal resistance. On the one hand, it was due to the effective embedding of wood fibers by the plastic matrix; Low (mostly below 50%). With the improvement of wood-plastic technology and the increase of fiber content in wood-plastic, the harm of fungi to wood-plastic composite materials has been dis...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L27/06C08L97/02C08K13/02C08K3/26C08K3/34C08J9/04
Inventor 冯静施庆珊陈娟欧阳友生黄小茉陈仪本
Owner GUANGDONG INST OF MICROBIOLOGY GUANGDONG DETECTION CENT OF MICROBIOLOGY
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