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Environment-friendly plant fiber wood-plastic composite material and preparation method thereof

A wood-plastic composite material and plant fiber technology, which is applied in the field of composite materials made of thermoplastic polystyrene and plant fiber and its preparation, can solve the problems of environmental pollution, high cost, and limitation of fiber addition, and achieve High physical and mechanical strength, easy cost decomposition, wide application effect

Inactive Publication Date: 2011-03-16
广东普科特粉末涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing composite wood, such as composite flooring, etc., are all made of multiple pieces of wood directly added to the binder, and the cost is relatively high; moreover, the binder used often contains formaldehyde; it causes environmental pollution; it also has adverse effects on human health. Serious impact. At present, some people are studying plant fiber wood-plastic composite materials. However, due to the different surface properties of plant fiber and resin matrix, the interface bonding effect is poor when the two are combined, which leads to the reduction of various properties of the composite material. The popular application of the composite material
On the other hand, due to the poor compatibility between the fiber and the plastic matrix, the amount of fiber added is severely limited. The fiber content in the existing plant fiber wood-plastic composite materials is only 10-25%, which is very important for reducing wood-plastic composite materials. The cost of materials is not significant, and the cost of expensive additives makes the market price of this composite material equivalent to or even higher than that of general-purpose plastics and solid wood, which restricts the development and application of wood-plastic composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] In this embodiment, the plant fiber polystyrene plastic composite material, in the base material, the content of wood powder is 60wt%, the content of recycled polystyrene plastic particles is 35wt%, and the content of styrene-butadiene-styrene is 5% ; The amount of auxiliary silane coupling agent is 10 wt% of wood flour, and the amount of stearic acid is 2 wt% of wood flour.

[0014] Preparation: (1) Pretreatment of plant fiber: the wood scraps are made into wood flour of 200-220μm on a grinder, and dried in a blast drying oven at 100°C until the moisture content is less than 5%; the dried wood Put the powder into a high-mixer, add silane coupling agent, mix for 5 minutes, and discharge for use; (2) Preparation of recycled polystyrene plastic particles: use a plastic grinder to pulverize recycled polystyrene plastic into 20 mesh After the powder, it is washed with clean water, then extruded and granulated in an extruder and dried. (3) Put waste polystyrene plastic recycle...

Embodiment 2

[0017] In the plant fiber polystyrene composite material of this embodiment, in the base material, the content of rice husk powder is 80% by weight, the content of recycled polystyrene plastic particles is 10% by weight, and the content of styrene-butadiene-styrene is 10%. %; The amount of auxiliary silane coupling agent is 10 wt% of rice husk powder, and the content of stearic acid is 3% of rice husk powder.

[0018] Preparation: (1) Rice husk pretreatment: the rice husk is made into 180-280μm plant fiber on a grinder, and it is dried in a blast drying box at 100°C until the moisture content is less than 5%; the dried plant fiber Put it into a high-mixer at a temperature of 30°C, add silane coupling agent, mix for 5 minutes, and discharge for later use; (2) Preparation of recycled polystyrene plastic particles: the recycled polyvinyl chloride plastic is crushed by a plastic crusher After it becomes 30 mesh powder, it is washed with water, then extruded and granulated in an extru...

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Abstract

The invention provides an environment-friendly plant fiber wood-plastic composite material and a preparation method thereof. The environment-friendly plant fiber wood-plastic composite material is prepared from the following components serving as base stock by weight percent: 50-90% of plant fibers, 5-40% of waste polystyrene plastic recovery particles and 5-10% of styrene butadiene styrene (SBS), as well as a proper amount of an assistant-silane coupling agent and stearic acid, wherein the use amount of the silane coupling agent accounts for 1-10wt% of the plant fibers while the use amount of the stearic acid accounts for 2-5wt% of the plant fibers. The environment-friendly plant fiber wood-plastic composite material has the advantages of insect prevention, moth resistance, chemical corrosion resistance, large additive amount of cellulose, high physical and mechanical strength, low cost, easy decomposition and wide application, and is environment-friendly.

Description

Technical field [0001] The invention relates to a wood-plastic composite material and a preparation method thereof, in particular to a composite material made of thermoplastic polystyrene and plant fibers as raw materials and a preparation method thereof. Background technique [0002] Existing composite wood such as composite floor, etc., are made of multiple pieces of wood directly added to the binder, and the cost is relatively high; and the binder used often contains formaldehyde; it causes environmental pollution; it also causes human health Serious impact. At present, some people are studying plant fiber wood plastic composite materials. However, due to the different surface properties of plant fiber and resin matrix, the interface bonding effect is poor when the two are combined, which leads to the reduction of various properties of the composite material and affects The popular application of the composite material. On the other hand, due to the poor compatibility between...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L25/06C08L53/02C08K5/09B29B9/06B29C43/58
Inventor 曾广胜孟聪
Owner 广东普科特粉末涂料有限公司
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