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Preparation method of composite board

A composite material board and manufacturing method technology, applied in the field of composite material board manufacturing method, can solve the problems of fragile materials, loose quality of the board, bulky volume, etc.

Active Publication Date: 2014-11-19
GUANGZHOU LIANGJIAN STATIONERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing wood-plastic formaldehyde-free material technology on the market, it is extruded through an extruder, then cooled and pulled out by a tractor, resulting in loose board quality (the hardness reaches the material brittle, the material needs to be thickened, and the volume becomes bulky, It is only suitable for use as open-air park materials, the toughness reaches the material is too soft), only suitable for ceilings, partition walls, not suitable for furniture materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) First mix 100 kg of PVC, 25-30 kg of wood powder, and 50 kg of calcium powder to stabilize

[0031] Add 4.5 kg of additives, 1.8 kg of processing aids, 2 kg of AC, 0.5 kg of baking soda, 0.3 kg of stearic acid, 0.3 kg of paraffin, and 0.4 kg of low molecular polyethylene wax. Stir and break, and after 10 to 20 minutes to mix well, the mixed material will come out of the high-speed machine, and the fineness of the material is 280 mesh to 325 mesh.

[0032] (2) The mixed material enters the extruder after leaving the high-speed machine. The temperature in the extruder is 180-230 ° C. After extrusion, foaming and extrusion, it enters the incubator.

[0033] (3) The mixed material enters the hydraulic press from the incubator. There is a mold with the required shape in the hydraulic press. The pressure of the mold is 300-2400 tons. There is a quick freezing device in the mold to make the mixed material quickly frozen and molded.

[0034] The above mold of the present i...

Embodiment 2

[0039] (1) First mix 100 kg of PVC, 25-30 kg of wood powder, and 45 kg of calcium powder to stabilize

[0040] Add 4 kg of additives, 1.5 kg of processing aids, 1.5 kg of AC, 0.3 kg of baking soda, 0.2 kg of stearic acid, 0.2 kg of paraffin, and 0.3 kg of low molecular weight polyethylene wax. Stir and break it, and after 10 to 20 minutes of stirring, the mixed material will go out of the high-speed machine, and the fineness of the material is 280 mesh to 325 mesh.

[0041] (2) The mixed material enters the extruder after leaving the high-speed machine. The temperature in the extruder is 180-230 ° C. After extrusion, foaming and extrusion, it enters the incubator.

[0042] (3) The mixed material enters the hydraulic press from the incubator. There is a mold with the required shape in the hydraulic press. The pressure of the mold is 300-2400 tons. There is a quick freezing device in the mold to make the mixed material quickly frozen and molded.

[0043] The above mold of the p...

Embodiment 3

[0048] (1) First mix 100 kg of PVC, 25-30 kg of wood powder, and 55 kg of calcium powder to stabilize

[0049] 5 kg of additives, 2.3 kg of processing aids, 2.5 kg of AC, 0.7 kg of baking soda, 0.4 kg of stearic acid, 0.4 kg of paraffin, and 0.5 kg of low-molecular polyethylene wax. Stir and break it, and after 10 to 20 minutes of stirring, the mixed material will go out of the high-speed machine, and the fineness of the material is 280 mesh to 325 mesh.

[0050] (2) The mixed material enters the extruder after leaving the high-speed machine. The temperature in the extruder is 180-230 ° C. After extrusion, foaming and extrusion, it enters the incubator.

[0051] (3) The mixed material enters the hydraulic press from the incubator. There is a mold with the required shape in the hydraulic press. The pressure of the mold is 300-2400 tons. There is a quick freezing device in the mold to make the mixed material quickly frozen and molded.

[0052] Above the pipe of the spiral super...

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Abstract

The invention relates to a preparation method of a composite board required by manufacturing industry of desks / chairs and furniture. The method comprises the steps of extrusion and hard compression at constant temperature. The method comprises the following steps: compositely and uniformly stirring and dehydrating PVC (polyvinyl chloride), wood meal, calcium powder and related materials in a high speed machine, sending into an extruding machine, heating to 180-230 DEG C in the extruding machine, carrying out foaming and extrusion, sending into a thermal insulation cabinet, and sending into a hydraulic machine mold, wherein a mold with required shape is arranged in the hydraulic machine, the mold pressure of the hydraulic machine is 300-2400 tons and is determined by the size of the product, and a quick refrigerating plant is arranged in the mold, so that the extruded mixture can be quickly cooled, molded and demolded. The composite board has the characteristics of high toughness, high hardness, worm resistance, corrosion resistance, moisture absorption resistance and no deformation, can be nailed or punched, can not be influenced when being put outdoors for three years, can be reutilized, is free of formaldehyde, can be used in middle and small desks / chairs and household kitchens, and has the advantages low cost, beautiful appearance and high quality.

Description

technical field [0001] The invention relates to a board comprising wood powder+calcium powder / polyvinyl chloride composite material. Background technique [0002] The desks and chairs used in primary and middle schools are much better than the previous ones in terms of quality and appearance, which is in line with the needs of schoolboys and boys. But now some desks and chairs are made of wood, and the plywood and MDF are all formaldehyde exceeding the standard. Although the surface is painted with paint, it is still affected by insects, water soaking, and cracking, and it may be environmentally friendly with formaldehyde. problem, and the wood is not renewable and consumes a lot. Some are made of plastic boards. Plastic boards are not afraid of blisters, are easy to age and burst, are environmentally friendly, and have a smooth surface. However, when children accidentally touch tables and chairs, the hardness and toughness of plastic can prevent bleeding. However, the pla...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/02C08K13/02C08K3/22C08K3/26C08K5/09C08K5/01C08J9/10
Inventor 李德胜
Owner GUANGZHOU LIANGJIAN STATIONERY CO LTD
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