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Wood-plastic composite material and preparation method thereof

A wood-plastic composite material and plastic technology, applied in the field of polymer materials, can solve the problems of low mechanical properties of wood-plastic composite materials, limited degree of esterification reaction, and high water absorption, so as to improve interface compatibility and improve mechanical properties. , the effect of high production efficiency

Inactive Publication Date: 2013-10-02
浙江格林特木塑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing wood-plastic composite material preparation method adds some grafted plastics, but does not add a catalyst for the esterification reaction, resulting in a limited reaction degree of the esterification reaction, and the prepared wood-plastic composite material has low mechanical properties and low water absorption. High, which limits its application in some fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Production process flow of the present invention:

[0027] 1. Select raw materials: plant fiber is preferably 100 kg of wood cellulose, grafted plastic is preferably 80 kg of maleic anhydride grafted polyethylene, the catalyst is preferably 3 kg of sodium bisulfate, and the antioxidant is preferably 1 kg of antioxidant 1010 , lubricant is preferably 1 kilogram of polyethylene wax, 2 kilograms of stearic acid amide.

[0028] 2. Add the above selected wood cellulose, maleic anhydride grafted polyethylene, antioxidant 1010, polyethylene wax, stearic acid amide into the mixer, start the mixer, preferably a high-speed mixer, run for 30 minutes, take out and mix after the mixture.

[0029] 3. The mixed mixture is re-mixed, plasticized and granulated by a parallel twin-screw extruder, and extruded by a conical twin-screw extruder. The temperature of the parallel twin-screw extruder is 180°C, the speed of the host is 500r / min, the current of the host is 70% of the rated curr...

Embodiment 2

[0032] Production process flow of the present invention:

[0033] 1. Selection of raw materials: plant fibers are preferably 80 kg of nano-bamboo cellulose, grafted plastics are preferably 100 kg of acrylic acid grafted polypropylene, catalysts are preferably 0.2 kg of ammonium dihydrogen phosphate, and antioxidants are preferably 0.5 kg of antioxidant 1010 , 168 0.5 kilogram, lubricant is preferably 0.3 kilogram of stearic acid, 0.8 kilogram of oleic acid amide.

[0034] 2. Put the above selected nano-bamboo cellulose, acrylic acid grafted polypropylene, antioxidants 10101, 168, stearic acid, and oleic acid amide into the mixer, start the high-speed mixer, run for 10 minutes, and take out the mixed mixture.

[0035] 3. The mixed mixture is plasticized and granulated by a parallel twin-screw extruder, and extruded by a conical twin-screw extruder. The temperature of the parallel twin-screw extruder is 160°C, the speed of the host is 200r / min, and the current of the host is ...

Embodiment 3

[0038] Production process flow of the present invention:

[0039] 1. Selection of raw materials: plant fiber is preferably hemp cellulose 95 kg, grafted plastic is preferably acrylic acid grafted POE 75 kg, catalyst is preferably SO 4 2- / M x o y Type solid superacid 2 kilograms, antioxidant is preferably 2 kilograms of the mixture of 1010 and DLTP, and lubricant is preferably 2 kilograms of oleic acid amide, 1 kilogram of paraffin.

[0040] 2. The above selected hemp cellulose, acrylic acid grafted POE, antioxidant 1010, DLTP, oleic acid amide, paraffin, SO 4 2- / M x o y Put the type solid superacid into the mixer, start the high-speed mixer, run for 20 minutes, and take out the mixed mixture.

[0041] 3. The mixed mixture is plasticized and granulated by a parallel twin-screw extruder, and extruded by a conical twin-screw extruder. The temperature of the parallel twin-screw extruder is 190°C, the speed of the host is 400r / min, the current of the host is 60% of the r...

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Abstract

The invention relates to a wood-plastic composite material and a preparation method thereof, belonging to the field of molecular materials. The wood-plastic composite material comprises the following raw materials in parts by weight: 80-110 parts of plant fiber, 50-90 parts of grafting plastic, 0.2-5 parts of catalyst, 0.2-2 parts of antioxidant and 0.3-3 parts of lubricant, wherein the catalyst is selected from one or more of sodium hydrogen sulfate, potassium hydrogen sulfate, ammonium dihydrogen phosphate, sodium dihydrogen phosphate, ammonium polyphosphate and SO4<2-> / MxOy type solid super-strong acid. According to the invention, the performance advantages of the plant fiber and the grafting plastic are used; and the esterification reaction between the plant fiber and the grafting plastic is promoted through a method of adding the catalyst, and the interface compatibility of the plant fiber and the grafting plastic is improved, thus enhancing the mechanical performance of the wood-plastic composite material.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a wood-plastic composite material made by using a catalyst and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a new composite material with high performance and high added value, which is made of plant fiber as the main raw material, which can be processed with various plastics through different composite methods. Wood-plastic composite material is a new type of composite material that has been booming at home and abroad in recent years. It refers to the use of plastics such as polyethylene, polypropylene, and polyvinyl chloride instead of the usual resin adhesive, and more than 50% of wood powder, rice husk, and straw. Waste plant fibers are mixed into new wood materials, and then plastic processing techniques such as extrusion, molding, and injection molding are used to produce panels or profiles. Mainly used in building material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L51/06C08L51/00C08K13/02C08K5/01C08K5/09C08K5/20C08K3/30C08K3/32
Inventor 张清锋
Owner 浙江格林特木塑材料有限公司
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