Three-layer coextruded PVC (polyvinylchloride) wood-plastic composite foam board and preparation method thereof

A wood-plastic composite and three-layer co-extrusion technology, which is applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., to achieve high surface hardness, excellent nail holding force, and good dimensional stability.

Active Publication Date: 2013-02-13
JIANGSU RUNJU ENVIRONMENTAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, there is no relevant patent report on the production o

Method used

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  • Three-layer coextruded PVC (polyvinylchloride) wood-plastic composite foam board and preparation method thereof

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preparation example Construction

[0056] The steps of the preparation method of the three-layer co-extruded PVC wood-plastic composite foam board are: according to the proportion, weigh the raw materials of each component respectively and add them to the high-speed mixer, start at low speed after sealing, and adjust to high speed after 5 minutes, When the material reaches 115℃~125℃, open the material door and put it into the low-speed pot, cool to about 30℃ and release it.

[0057] The uniformly mixed material is put into the hopper of the extruder through the automatic screw feeder, and at the same time, the temperature of the extruder is preset and kept warm, and the raw material is melted and plasticized by the extruder. It is co-extruded by the main machine and the auxiliary machine, extruded into the shaping device through a special mold, cooled and shaped, and pulled out by traction, and then enters the automatic cutting machine to automatically cut to the stacking rack according to the preset length, and...

Embodiment 1

[0060] Outer layer (layer A): 43% polyvinyl chloride, 19% filler, 2.7% impact modifier, 0.8% lubricant, 3% composite stabilizer, 0.3% coupling agent, 1.1% processing aid, Polyvinyl chloride recycled material 30.1%.

[0061] Inner layer (layer B): 50% polyvinyl chloride, 4% wood fiber powder, 10% filler, 0.2% foaming agent, 6% reinforcing agent, 5% foaming regulator, and 2% impact modifier , 0.85% internal lubricant, 2.1% composite stabilizer, and 19.85% sheet recycled material.

[0062] According to the proportion, weigh the raw materials of each component and add them to the high-speed mixer. After sealing the cover, start at low speed and adjust to high speed after five minutes. When the material reaches 115°C-125°C, open the material door and put it into the low-speed pot. Cool to Release at around 30°C. The uniformly mixed material is put into the hopper of the extruder through the automatic screw feeder, and at the same time, the temperature of the extruder is preset an...

Embodiment 2

[0064] Outer layer (layer A): 48% polyvinyl chloride, 19% filler, 2.5% impact modifier, 0.8% lubricant, 3.2% composite stabilizer, 0.3% coupling agent, 1.1% processing aid, Polyvinyl chloride recycled material 25.1%.

[0065] Inner layer (layer B): 55% polyvinyl chloride, 4% wood fiber powder, 8% filler, 0.2% foaming agent, 5.5% reinforcing agent, 5.2% foaming regulator, and 2% impact modifier , 0.85% lubricant, 2.3% composite stabilizer, and 16.95% sheet recycled material.

[0066] According to the proportion, weigh the raw materials of each component and add them to the high-speed mixer. After sealing the cover, start at low speed and adjust to high speed after five minutes. When the material reaches 115°C-125°C, open the material door and put it into the low-speed pot. Cool to Release at around 30°C. The uniformly mixed material is put into the hopper of the extruder through the automatic screw feeder, and at the same time, the temperature of the extruder is preset and ke...

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Abstract

The invention relates to a three-layer coextruded PVC (polyvinylchloride) wood-plastic composite foam board and a preparation method of the three-layer coextruded PVC wood-plastic composite foam board. The wood-plastic composite foam board is of an ABA structure; an outer layer, namely an A layer, adopts polyvinyl chloride, a filler, an impact modifier, a lubricating agent, a composite stabilizer, a coupling agent, a processing agent and a polyvinyl chloride recycled material as raw materials, and an inner layer, namely a B layer, adopts the polyvinyl chloride, wood fiber powder, the filler, a foaming agent, an enhancer, a foaming regulator, the impact modifier, the lubricating agent, the composite stabilizer and a plate recycled material as raw materials. The three-layer coextruded wood-plastic composite foam board is formed by a main machine and an auxiliary machine in a coextrusion molding manner after mixing at high temperature and cooling. The three-layer coextruded PVC wood-plastic composite foam board has the processing property similar with that of wood, is anti-flaming and does not release formaldehyde, so that the three-layer coextruded PVC wood-plastic composite foam board becomes an ideal material for replacing the wood, can be used as building templates, cabinet boards and the like.

Description

technical field [0001] The invention belongs to the field of new materials. The prepared three-layer co-extruded PVC wood-plastic foam board is mainly used in the fields of real estate construction, road and bridge construction, civil engineering parts of chemical equipment, coal mine passage partitions, etc., and can also be used as cabinet boards and decorations for decoration. board etc. Background technique [0002] my country's wood resources are scarce, and one of the ways to solve this problem is to seek wood substitutes through the research and development of new materials. Therefore, the PVC wood-plastic composite foam board produced by using wood scraps, sawdust, and wood powder has become the preferred substitute. Many foreign countries such as the United States and Canada have invested a lot in the development of wood-plastic projects. Three-layer co-extruded PVC wood-plastic composite foam board can replace wood boards as building templates and cabinet boards....

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/18B32B9/02B32B5/18C08L27/06C08L97/02B29C47/92B29C48/92
CPCB29C48/911B29C48/0022B29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 高冬张传玉胡秋英乔新泉朱骏峰王洪廷
Owner JIANGSU RUNJU ENVIRONMENTAL TECH CO LTD
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