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Long-acting mould-proof wood plastic composite material and preparation method thereof

A wood-plastic composite material and anti-mildew technology, which is applied to wood processing appliances, flat products, and other household appliances, can solve the problems of poor anti-mildew performance, achieve high water absorption resistance, prevent micro-cracks, and have good effects

Inactive Publication Date: 2011-09-07
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming of poor anti-mildew performance of existing wood-plastic composite materials for long-term use, and apply co-extrusion technology to form the core layer of wood-plastic composite materials and the surface layer of anti-mildew plastic

Method used

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  • Long-acting mould-proof wood plastic composite material and preparation method thereof
  • Long-acting mould-proof wood plastic composite material and preparation method thereof
  • Long-acting mould-proof wood plastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh and dry 100 parts of recycled PE plastic powder with a particle size of 50 mesh, 50 parts of wood powder with a particle size of 300 mesh, 30 parts of activated calcium carbonate, 5 parts of compatibilizer PE-gMAH, calcium stearate 6 parts, 8 parts of zinc stearate, 8 parts of PE wax, 3 parts of antioxidant 1076, 4 parts of light stabilizer 292, and 2 parts of toner. Mix at a high speed for 18 minutes at a speed of rpm to obtain a mixed material A.

[0032] Take 100 parts of 60-mesh recycled PE plastic powder, anti-mildew additive nano-TiO 2 3 parts, 100 parts of active calcium carbonate, nano-SiO 2 1 part, 10 parts of compatibilizer PE-gMAH, 6 parts of calcium stearate, 5 parts of zinc stearate, 8 parts of PE wax, 1 part of antioxidant 1076, 2 parts of light stabilizer 292, 3 parts of toner, will The above raw materials were put into a high-speed mixer, and mixed at a high speed of 90°C and 90 rpm for 18 minutes to obtain a mixed material B.

[0033] Using m...

Embodiment 2

[0040] Weigh and dry 100 parts of recycled PP plastic powder with a particle size of 60 mesh, 70 parts of bamboo powder with a particle diameter of 250 mesh, 25 parts of active calcium carbonate, 5 parts of compatibilizer PP-g-MAH, stearin 5 parts of calcium carbonate, 10 parts of zinc stearate, 5 parts of PE wax, 2 parts of antioxidant 300, 5 parts of light stabilizer 765, and 3 parts of toner. 1. Under the rotating speed of 100 rev / min, mix at high speed for 16 minutes to obtain the mixed material A.

[0041] Take 100 parts of recycled PP plastic powder of 60 meshes, anti-mildew additive nano-TiO 2 10 parts, 80 parts of active calcium carbonate, nano-SiO 2 2 parts, 6 parts of compatibilizer PP-g-MAH, 5 parts of calcium stearate, 10 parts of zinc stearate, 5 parts of PE wax, 2 parts of antioxidant 300, 5 parts of light stabilizer 765, 3 parts of toner The above raw materials were put into a high-speed mixer, and mixed at a high speed of 100 rpm at 95°C for 16 minutes to o...

Embodiment 3

[0048] Weigh and dry 100 parts of recycled PVC plastic powder with a particle size of 80 mesh, 100 parts of rice bran with a particle size of 200 mesh, 20 parts of activated calcium carbonate, 8 parts of compatibilizer CPE-g-MAH, stearin 7 parts of calcium carbonate, 8 parts of zinc stearate, 6 parts of PE wax, 3 parts of antioxidant 1010, 3 parts of light stabilizer 3346, and 1 part of toner. , 90 revolutions per minute, high-speed mixing for 15 minutes to obtain the mixed material A.

[0049] Take 100 parts of recycled PVC plastic powder of 70 meshes, anti-mildew additive nano-TiO 2 7 parts, 60 parts of active calcium carbonate, nano-SiO 2 5 parts, 8 parts of compatibilizer CPE-g-MAH, 6 parts of calcium stearate, 10 parts of zinc stearate, 5 parts of PE wax, 3 parts of antioxidant 1010, 3 parts of light stabilizer 3346, 3 parts of toner The above raw materials were put into a high-speed mixer, and mixed at a high speed for 15 minutes at 100° C. and a speed of 90 rpm to ob...

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Abstract

The present invention provides a mould-proof wood plastic composite material and a preparation method thereof and relates to a double-layer wood plastic composite material which is prepared by mixing surface grafting modified plant fiber power, recycle plastic power and mould-proof functional additive and adopting coextrusion technology, wherein the double-layer wood plastic composite material uses the wood plastic composite material as sandwich layer and the mould-proof functional plastic layer as surface layer. The mould-proof wood plastic composite material contains 9-29mm of wood plastic sandwich layer and 0.5-1.5mm of mould-proof functional surface layer. The plant fiber power in the sandwich layer is processed through organosilicon surface modification. The mould-proof additive in the surface layer has photocatalysis function and is also processed through organosilicon surface modification. The microcosmic interfacial properties of the entire wood plastic composite material are good. The components are melted, mixed and processed through coextrusion to prepare the mould-proof wood plastic composite material of the invention. The wood plastic composite material has good mould-proof function; and as the surface layer is a plastic layer, the wood plastic composite material is ensured to have low water absorption and good mechanical properties. The wood plastic composite material of the invention can be applied in fields such as indoor and outdoor decorations, furniture and packages.

Description

technical field [0001] The invention relates to a wood-plastic composite material, in particular to a wood-plastic composite material with long-acting anti-mildew function prepared by using waste plastic powder and surface grafted modified plant fiber powder and a preparation method thereof. Background technique [0002] Wood-plastic composite (WPC) products are a kind of material with certain water absorption (biological fiber powder, such as wood chips, etc.) and hydrophobic materials (thermosetting plastics or thermoplastics) mixed with various toners and additives. complex materials. In the WPC industry standard, the addition ratio of plant fiber powder filler is usually 40% to 60%. This increases the stiffness and creep resistance of the product. Although the moisture resistance of WPC products is very good, especially compared with wood. But over time, its moisture resistance performance will be compromised. After the wood-plastic composite material has experienced...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08K13/06B27N3/08
Inventor 石光林少全杨美珠李国明侯琼罗穗莲
Owner SOUTH CHINA NORMAL UNIVERSITY
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