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Temperature-resisting anti-aging modified wood-plastic composite board and preparation process thereof

A preparation process and composite board technology, which is applied in the field of wood-plastic board, can solve the problems of PVC-based wood-plastic material strength and toughness decline, PVC-based wood-plastic material expansion and cracking, mechanical properties and temperature resistance, etc., to achieve uniform and sufficient reaction , reduce stress, fully respond to the effect

Inactive Publication Date: 2018-01-19
浙江天博生物新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that when the above-mentioned PVC-based wood-plastic material is used as structural materials such as outdoor exterior walls, floors and templates, the exposure will cause the PVC-based wood-plastic material to expand and crack or be deformed by heat, and the mechanical properties of the PVC-based wood-plastic material will decline rapidly after being heated. When using external walls, etc., there will be great safety hazards; while the low temperature will lead to a sharp decline in the strength and toughness of PVC-based wood-plastic materials, resulting in greater brittleness, and a greater impact on the flexural, flexural and impact strength, and even severe cases. Cracking and fracture phenomena, so the use is also greatly restricted; the mechanical properties are low; after being exposed to long-term strong ultraviolet light, PVC-based wood-plastic composite materials will rapidly age and oxidize, and their mechanical properties and temperature resistance will decrease. It is greatly affected by problems such as environmental protection, high heat resistance, high heat deformation resistance, low temperature can maintain its own strength and toughness, high thermal strength characteristics and strong anti-ultraviolet aging ability Modified wood-plastic composite board with temperature resistance and aging resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1) Anatase titanium dioxide and potassium carbonate were mixed and ball milled, calcined at 200°C for 5 hours, treated with boiling water for 30 minutes, dried at 60°C for 30 minutes, then pickled with hydrochloric acid, rinsed with deionized water, and dried at 60°C for 2 hours. Titanium dioxide nanofibers were obtained after calcination at 350°C for 5 hours;

[0046] 2) Dilute and dissolve the γ-(2,3-glycidoxy)propyltrimethoxysilane with 5 times the weight of an organic solvent, stir the dry plant cellulose, and spray it into Diluted γ-(2,3-glycidyloxy)propyltrimethoxysilane, then continued to stir for 15 minutes to obtain pretreated plant cellulose;

[0047] 3) Put polyvinyl chloride, chlorinated polyvinyl chloride, and titanium dioxide nanofibers described in step 1) together in a double-roller mill and knead for 3 minutes at a mixing temperature of 110°C, then add 2,6-di tert-butyl-4-methylphenol and ultrafine talcum powder were mixed for 15 minutes to obtain a pr...

Embodiment 2

[0054] 1) Anatase titanium dioxide and potassium carbonate were mixed and ball-milled, calcined at 220°C for 3 hours, treated with boiling water for 25 minutes, dried at 80°C for 25 minutes, then pickled with hydrochloric acid, rinsed with deionized water, and dried at 80°C for 1 hour. Titanium dioxide nanofibers were obtained after calcination at 420°C for 3 hours;

[0055] 2) Dilute and dissolve the maleic anhydride grafted polylactic acid with 5 times the weight of an organic solvent, stir the dry plant cellulose, and spray the diluted maleic anhydride grafted polylactic acid into a mist during the stirring process , then continue to stir for 15min to obtain pretreated plant cellulose;

[0056] 3) Put polyvinyl chloride, chlorinated polyvinyl chloride, and titanium dioxide nanofibers described in step 1) together in a double-roller mill and knead for 5 minutes at a mixing temperature of 80°C, then add 2,6-di tert-butyl-4-methylphenol and ultrafine talcum powder were mixed ...

Embodiment 3

[0063] 1) Anatase titanium dioxide and potassium carbonate were mixed and ball-milled, calcined at 200°C for 4 hours, treated with boiling water for 25 minutes, dried at 70°C for 30 minutes, then pickled with hydrochloric acid, rinsed with deionized water and dried at 70°C for 2 hours. Titanium dioxide nanofibers were obtained after calcination at 400°C for 4 hours;

[0064] 2) Dilute and dissolve the γ-(2,3-glycidoxy)propyltrimethoxysilane with 3 times the weight of an organic solvent, stir the dry plant cellulose, and spray it into The diluted γ-(2,3-glycidyloxy)propyltrimethoxysilane was then stirred for 5 minutes to obtain pretreated plant cellulose;

[0065] 3) Put polyvinyl chloride, chlorinated polyvinyl chloride, and titanium dioxide nanofibers described in step 1) together in a double-roller mill and knead for 5 minutes at a mixing temperature of 80°C, then add 2,6-di tert-butyl-4-methylphenol and superfine talcum powder were mixed for 10 minutes to obtain a prelimin...

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Abstract

The invention relates to temperature-resisting anti-aging modified wood-plastic composite board which is environment-friendly, has high heat resistance and high thermal deformation resistance, can maintain the high toughness at a low temperature, has higher heat strength property and has extremely high ultraviolet aging resistance. The chlorinated polyvinyl chloride is mixed with polyvinyl chloride, and a modification agent is added for modification, so that the mechanical property and temperature resistance of the wood-plastic composite board are improved, and the high temperature resistanceand low temperature resistance are apparently improved; and the preparation process is simple, rapid and efficient; and moreover, the pollution is avoided in the preparation process, the healthy and environment-friendly production requirement can be met, and compared with the traditional preparation process of the PVC wood-plastic material, the preparation process provided by the invention can achieve a purpose of uniform plasticization within a short time and can have an energy-saving effect.

Description

technical field [0001] The invention relates to the field of wood-plastic boards, in particular to a wood-plastic board that is environmentally friendly, has high heat resistance, high heat deformation resistance, can maintain its own strength and toughness at low temperatures, has high thermal strength characteristics, and has strong anti-ultraviolet aging ability. High temperature and anti-aging modified wood-plastic composite board. Background technique [0002] Wood-plastic board is a composite material prepared by mixing wood fibers with polymer plastics such as polypropylene (PP), polyvinyl chloride (PVC) or polyethylene (PE), and adding various additives to improve performance. It can be obtained by processes such as refining, extrusion and injection molding. As a green and environmentally friendly material, PVC-based wood-plastic composite materials with polyvinyl chloride as the main matrix are widely used in the production of outdoor plank boards, building exterio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L27/24C08L97/02C08K13/04C08K7/08C08K3/34C08K5/12C08K5/13B29B7/00B29C43/58B29L7/00
Inventor 陈建伟
Owner 浙江天博生物新材料股份有限公司
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