High-strength micropore plastic-wood composite material panel and preparation method thereof

A wood-plastic composite material and microporous technology, applied in the field of wood-plastic composite materials, can solve the problems of high brittleness, reduced density, low ductility and impact resistance, and achieve the effect of low density, low density and overcoming high brittleness.

Active Publication Date: 2015-02-18
JIEYANG JIADA FOOTWEAR IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition to the advantages of the above-mentioned wood-plastic composite materials, the micro-foamed wood-plastic composite material formed by introducing very small cells into the wood-plastic composite material through the gas core can passivate the crack tip due to the good cell structure inside the material. , to prevent the expansion of cracks, which can effectively overcome the shortcomings of general wood-plastic composite materials such as high brittleness, low ductility and impact resistance, and reduce the density of the material, which not only saves raw materials, but also has better sound insulation and heat insulation performance. So as to make up for the lack of performance of traditional unfoamed wood-plastic composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A high-strength microporous wood-plastic composite board, the specific preparation steps are as follows:

[0058] (1) Weigh a certain amount of wood flour, steam it at 105°C for 15 minutes, grind it into wood flour fiber pulp, then weigh the wood flour fiber pulp and Anhydrous ethanol, stirred for 3h to make it evenly mixed, then filtered and dried. 10 parts by weight of acetone was used to soak and dry the obtained coarse fibrous wood powder, and after stirring for 3 hours, it was soaked in 10 parts by weight of chloroform, stirred for 3 hours, filtered again, and dried to obtain fibrous wood powder.

[0059] (2) Weigh fibrous wood powder and 10% sodium hydroxide solution at a weight ratio of 1:7, put them into the reactor, add 7.5 parts by weight of benzyl chloride and 7.5 parts by weight of toluene, and stir evenly , raised the temperature to 110° C., reacted for 4 hours, filtered, removed the filtrate, washed the modified fibrous wood powder with ether for 4 times,...

Embodiment 2

[0077] A high-strength microporous wood-plastic composite board, the specific preparation steps are as follows:

[0078] (1) Weigh a certain amount of wood flour, steam it at 100°C for 20 minutes, grind it into wood flour fiber pulp, then weigh wood flour fiber pulp and Anhydrous ethanol, stirred for 4h to make it evenly mixed, then filtered and dried. The coarse fibrous wood powder obtained by soaking and drying with 10 parts by weight of acetone was stirred for 2 hours, soaked in 10 parts by weight of chloroform, stirred for 4 hours, filtered and dried again to obtain fibrous wood powder.

[0079] (2) Weigh fibrous wood powder and 15% sodium hydroxide solution at a weight ratio of 1:5, put them into the reactor, add 5 parts by weight of benzyl chloride and 10 parts by weight of toluene at the same time, and stir evenly , raised the temperature to 100° C., reacted for 5 hours, filtered, removed the filtrate, washed the modified fibrous wood powder with ether three times, and...

Embodiment 3

[0097] A high-strength microporous wood-plastic composite board, the specific preparation steps are as follows:

[0098] (1) Weigh a certain amount of wood flour, steam it at 110°C for 10 minutes, grind it into wood flour fiber pulp, then weigh the wood flour fiber pulp and Anhydrous ethanol, stirred for 2h to make it evenly mixed, then filtered and dried. 10 parts by weight of acetone was used to soak and dry the obtained coarse fibrous wood powder, and after stirring for 4 hours, it was soaked in 10 parts by weight of chloroform, stirred for 2 hours, filtered again, and dried to obtain fibrous wood powder.

[0099] (2) Weigh fibrous wood powder and 5% sodium hydroxide solution at a weight ratio of 1:9, put them into the reactor, add 10 parts by weight of benzyl chloride and 5 parts by weight of toluene at the same time, and stir evenly , raised the temperature to 120° C., reacted for 3 hours, filtered, removed the filtrate, washed the modified fibrous wood powder with ether...

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Abstract

The invention discloses a high-strength micropore plastic-wood composite material panel and a preparation method thereof. The panel is prepared from benzylated fibrous wood powder, polyvinyl chloride plastic particles, p-toluenesulfonyl semicarbazide, N,N-dinitrosopentamethylene tetraamine, activated calcium carbonate powder, calcium stearate, lead sulfate tribasic, urea, salicylic acid, dibutyl phthalate and an antioxidant; the preparation method comprises the following steps: firstly preparing the fibrous wood powder from the wood powder by using a pulping method, preparing benzylated fibrous wood powder by modifying benzyl chloride, preparing the activated calcium carbonate by modifying calcium carbonate by using octadecanol polyoxyethylene ether sodium acetate, and then extruding a formed panel by using a step-by-step extrusion process. The panel disclosed by the invention is low in density, light in weight, large in rigidity, resistant in creep deformation, good in heat insulation and sound insulation, and convenient for transportation and mounting; the production manufacturing is convenient and environment-friendly, and the panel can be widely used for suspended ceilings, screens, wainscots, skirting lines, television background walls, door planks, racks and the like in the fields of building, traffic and decoration.

Description

technical field [0001] The invention relates to the technical field of plastic-wood composite materials, in particular to a high-strength microporous plastic-wood composite material plate and a preparation method thereof. Background technique [0002] In recent years, a kind of plant fiber powder such as wood flour and rice bran powder is used as the main base material, and thermoplastics such as polyethylene, polypropylene, polystyrene, polyvinyl chloride and additives such as lubricants, plasticizers, and antioxidants have been developed. , mixed evenly and then heated and extruded by mold equipment, the green environmental protection material, that is, the wood-plastic composite material has attracted more and more attention. It can be made into automotive interior decoration parts, building templates, gardens and other occasions. Outdoor tables and chairs, garden handrails and decorative panels, open floors, waste bins, railway sleepers, corridor panels, window and door ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L27/06C08K13/06C08K9/08C08K3/26C08K5/098C08K3/30C08K5/13C08K5/12C08J9/10B29B9/06B29C47/92B29C48/92
Inventor 余旺旺
Owner JIEYANG JIADA FOOTWEAR IND
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