Wood-plastic composite material and preparation method thereof

A technology of wood-plastic composite materials and waste plastics, which is applied in the field of polymer processing and can solve the problems of low bonding strength of the phase interface between wood powder and plastics

Inactive Publication Date: 2009-03-18
SHANGHAI BESTON PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a wood-plastic composite material and its preparation method to solve the problem of low bonding strength of the phase interface between wood powder and plastic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 Wood-plastic composite material preparation

[0028] Use a mill to grind the wood fiber into a fine powder with a fineness of 60 meshes, and then dry it with an infrared dryer to control its moisture content below 2.0%;

[0029] Add 100kg of dried wood fiber powder to the high-speed mixer and mix to 90°C (depending on the friction between the material and the stirring paddle and the pot wall to increase the temperature, the speed of high-speed stirring is: 1470r / min, and then add 6Kg of industrial white oil Mix with the stearic acid of 8Kg to 120 ℃ and complete.

[0030] Add 100Kg of waste plastics, 2Kg of maleic anhydride grafted high-density polyethylene, 8Kg of lubricant (calcium stearate: 4Kg, polyethylene wax: 4Kg), and 0.1Kg of anti-ultraviolet agent to the high-mixer to make the system evenly mixed.

[0031] Mixing and pre-plasticizing: Add the mixed materials to the mixing and extruding head of the flat double granulator, and the extruded rubber bl...

Embodiment 2

[0034] Example 2 Preparation of wood-plastic composite material

[0035] Use a mill to grind the wood fiber into a fine powder with a fineness of 40 meshes, and then dry it with an infrared dryer to control its moisture content below 2.0%;

[0036] Take 120Kg of the dried wood fiber powder and add it to the high-speed mixer to mix at a high speed to 90°C (rely on the friction between the material and the stirring paddle and the pot wall to heat up, the speed of high-speed stirring is: 1470r / min, and then add 8Kg of 10# industrial The stearic acid of white oil and 8Kg is mixed to 120 ℃ and completes.

[0037] Add 60Kg of waste Japanese plastics, 6Kg of maleic anhydride grafted PP, 6Kg of lubricant (zinc stearate: 3Kg, polyethylene wax: 3Kg), and 0.1Kg of UV-531 into the high mixer to make the system evenly mixed.

[0038] Following steps are with embodiment 1.

Embodiment 3

[0039] Embodiment 3 wood-plastic composite material preparation

[0040] Use a mill to grind the wood fiber into a fine powder with a fineness of 80 meshes, and then dry it with an infrared dryer to control its moisture content below 2.0%;

[0041] Take 100Kg of the dried wood fiber powder and add it to the high-speed mixer to mix at a high speed to 90°C (depending on the friction between the material and the stirring paddle and the pot wall to increase the temperature, the speed of high-speed stirring is: 1470r / min, and then add 8Kg of 10# industrial The stearic acid of white oil and 8Kg is mixed to 120 ℃ and completes.

[0042] Add 200Kg of waste plastics, 5Kg of maleic anhydride grafted PP, 4Kg of zinc stearate, 0.2Kg of UV-531, and 0.1Kg of iron oxide red into the high-mixer to make the system evenly mixed.

[0043] Following steps are with embodiment 1.

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Abstract

The invention relates to the technical field of polymer processing, in particular to a wood plastic composite material and a preparation method thereof. The invention discloses the wood plastic composite material which is prepared from the following raw materials in weight percentage: 30 to 60 percent of wood fibre, 30 to 60 percent of waste plastics, 1 to 4 percent of stearic acid, 1 to 4 percent of industrial white oil, 1 to 3 percent of a coupling agent and 4 to 6 percent of a lubricant. The invention also discloses the method for preparing the wood plastic composite material and wood plastic products which are prepared from the wood plastic composite material. The wood plastic products produced by using the wood plastic composite material as a raw material are superior to similar products in the appearance quality and the physiochemical performance.

Description

technical field [0001] The invention relates to the technical field of polymer processing, in particular to a wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite materials are made of plastic and wood fiber, which is an ideal wood substitute and an ideal new material to replace export wood packaging products. It is predicted that the demand for wood in my country in recent years is 100 million tons, while the supply is only 64 million tons, which is a big gap. As an alternative product, wood-plastic composite materials and their products have a wide sales market. The production principle of wood-plastic composite materials is to combine processed plastics with crushed wood powder (such as: plant fiber straw, fruit shell powder, sawdust, shavings, rice husk powder, etc.), stabilizers, coupling agents, Lubricants, colorants, etc. are melted and kneaded together to form granules or flakes, and then extruded and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L101/00C08K5/09B29C47/40
Inventor 何小军
Owner SHANGHAI BESTON PLASTICS
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