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Wood-plastic composite material and preparation method thereof

A wood-plastic composite material and wood powder technology, applied in the field of wood-plastic materials, can solve problems such as deformation and bending, and achieve the effects of reducing processing temperature, prolonging the temperature range of decomposition, and avoiding untimely cooling.

Inactive Publication Date: 2019-05-07
ANHUI KOJO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a wood-plastic composite material and its preparation method, which solves the technical problem of deformation and bending of the existing wood-plastic composite material products

Method used

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  • Wood-plastic composite material and preparation method thereof
  • Wood-plastic composite material and preparation method thereof
  • Wood-plastic composite material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0067] And the preparation method of the foaming agent is:

[0068] It includes the following steps:

[0069] S1: Azodicarbonamide, sodium bicarbonate, and stearic acid to obtain a matrix mixture;

[0070] S2: Preparation of resin emulsion: mix acrylonitrile, acrylate monomer, emulsifier, bicarbonate and chain initiator in a solvent, and after vacuuming and exhausting oxygen, react at 25-40℃ for 60-240min to obtain Resin emulsion

[0071] S3: Use the resin emulsion as a spray solution to disperse the resin emulsion into small liquid particles through ultrasonic waves in the nozzle, and spray them from the nozzle in the form of mist, and the sprayed solution will evenly fall on the matrix mixture under the flow and stirring state; after curing treatment , Cool to room temperature;

[0072] The resin emulsion adopts an automatic sampling process, and the automatic sampling process is: flow: 30-45 μL / min; dispensing time: 90-110s; dispensing volume: 40-60 μL; interval time: 0.1 min; syri...

Embodiment 1

[0078] A preparation method of wood-plastic composite material includes the following steps:

[0079] PVC base material is 36%, wood powder is 15.5%, calcium powder is 25.7%, synergist 15.7%, foaming agent 0.1%, stabilizer 2.5%, coupling agent 1%, PVC processing aid 2%, lubricant 1.5%, mixed configuration into intermediate pellets;

[0080] Wherein, the foaming agent A includes: 60 parts of azodicarbonamide, 25 parts of sodium bicarbonate, and 2 parts of stearic acid.

[0081] The azodicarbonamide particles have a diameter of 1 μm.

[0082] Extrusion molding through twin screw extruder;

[0083] Wherein, the processing temperature of the twin screw extruder is:

[0084] The temperature of the first section of the barrel is: 120℃, and the temperature of the first section of the machine head is: 175℃;

[0085] The temperature of the second section of the barrel is: 165℃, and the temperature of the second section of the machine head is: 170℃;

[0086] The temperature of the third section of ...

Embodiment 2

[0090] A preparation method of wood-plastic composite material includes the following steps:

[0091] PVC base material is 44%, wood powder is 5%, calcium powder is 35%, synergist 10%, foaming agent 1%, stabilizer 1.3%, coupling agent 0.2%, PVC processing aid 3%, lubricant 0.5%, mixed and configured into intermediate pellets;

[0092] Wherein, the foaming agent A includes: 95 parts of azodicarbonamide, 15 parts of sodium bicarbonate, and 5 parts of stearic acid.

[0093] The diameter of the azodicarbonamide particles is 3 μm.

[0094] Extrusion molding through twin screw extruder;

[0095] Wherein, the processing temperature of the twin screw extruder is:

[0096] The temperature of the barrel in the first stage is 150℃, and the temperature of the head in the first stage is 160℃;

[0097] The temperature of the second section of the barrel is: 185℃, and the temperature of the second section of the machine head is: 175℃;

[0098] The temperature of the third section of the barrel is: 185℃,...

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Abstract

The invention provides a wood-plastic composite material and a preparation method thereof, which relates to the technical field of wood-plastic materials. The wood-plastic composite material comprisesthe following components: PVC base material, wood powder, calcium powder, synergist, foaming agent, stabilizer, coupling agent, PVC processing aid and lubricant; wherein the foaming agent comprises azodicarbonamide, sodium bicarbonate and stearic acid. At a low temperature stage, sodium bicarbonate is decomposed to release gas, at high temperature, azodicarbonamide is decomposed to release gas, thereby realizing continuous release of gas, avoiding sudden release of gas, reducing decomposition temperature of foaming agent, and prolonging decomposition temperature range, thereby realizing lowerprocessing temperature of wood-plastic composite material, avoiding late cooling in time, resulting in slow bending deformation phenomenon of product.

Description

Technical field [0001] The invention relates to the technical field of wood-plastic materials, in particular to a wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-Plastic Composites (WPC) is a new type of composite material that has flourished in recent years at home and abroad. It refers to the use of polyethylene, polypropylene and polyvinyl chloride instead of the usual resin adhesives, and wood flour, rice husk , Straw and other waste plant fibers are mixed into new wood materials, and then subjected to plastic processing techniques such as extrusion, molding, and injection molding to produce plates or profiles. Mainly used in building materials, furniture, logistics packaging and other industries. A board that is formed by hot extrusion after mixing plastic and wood powder in a certain proportion is called an extruded wood-plastic composite board. [0003] Wood-plastic composite material is the main type of wood-plastic com...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/02C08K3/26C08K5/09C08J9/10C08J9/08
Inventor 叶润露
Owner ANHUI KOJO NEW MATERIAL TECH CO LTD
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