Wood plastic board and preparation method thereof

A wood-plastic board and wood powder technology, applied in the field of wood-plastic board and its preparation, can solve the problems of cumbersome steps, low strength of wood-plastic board, wood powder bonding, etc., to improve product qualification rate, excellent mechanical properties, saving The effect of resources

Inactive Publication Date: 2019-04-05
六盘水康博木塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of traditional wood-plastic panels needs to granulate wood powder first, and then the wood powder can be processed into wood-plastic panels after the granulation is completed. This processing method leads to low strength of wood-plastic panels and cumbersome steps.
Another method is to directly process wood powder and other materials as raw materials, but due to the unreasonable formula of raw materials and the mismatch of processing methods, the wood powder will be bonded, resulting in poor mechanical properties of the obtained wood-plastic board and unqualified products. even hard to form

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0031] The present invention also provides a preparation method for the wood-plastic panel described in the above technical solution, comprising the following steps:

[0032] After the raw materials are mixed in proportion, the wood-plastic board is obtained through extrusion plasticization, shaping, cooling and pulling in sequence.

[0033] In the present invention, the mixing preferably includes hot mixing and cold mixing performed in sequence. In the present invention, the temperature of the hot mixing is preferably 115-130°C, more preferably 120-125°C, and most preferably 121-123°C. In the present invention, the heat mixing time is preferably 15-30 minutes, more preferably 18-25 minutes, and most preferably 20-23 minutes. In the present invention, the temperature of the cold mixing is preferably 30-50°C, more preferably 35-45°C, most preferably 40°C. In the present invention, the cold mixing time is preferably 10-15 minutes, more preferably 11-14 minutes, and most prefer...

Embodiment 1

[0042] A wood-plastic board, prepared from raw materials comprising the following parts by weight:

[0043] 75 parts of PVC, 70 parts of calcium powder, 15 parts of wood powder, 25 parts of ecological wood mill powder, 5305 parts of foam regulator, 4 parts of calcium-zinc composite stabilizer, 5.0 parts of CPE plasticizer, 0.86 part of stearic acid, 0.8 parts of PE wax, 1 part of AC foaming agent, and 1.2 parts of NC foaming agent.

[0044] The preparation method comprises the following steps:

[0045] The above-mentioned raw materials were hot-mixed at 115°C for 20 minutes and cold-mixed at 35°C for 12 minutes in proportion to obtain a mixed material; the mixed material was plasticized and extruded in a twin-screw extruder; the twin-screw extruder was divided into eight heating zone; the temperature of the first heating zone is 140°C, and the time is 1h; the temperature of the second heating zone is 145°C, and the time is 1h; the temperature of the third heating zone is 150-...

Embodiment 2

[0048] A wood-plastic board, prepared from raw materials comprising the following parts by weight:

[0049] 50 parts of PVC, 62.5 parts of calcium powder, 8 parts of wood flour, 30 parts of ecological wood mill powder, 5304 parts of foam regulator, 2.5-2.8 parts of calcium-zinc composite stabilizer, 2.5-2.8 parts of CPE plasticizer, stearin 0.3-0.5 parts of acid, 0.4-0.6 parts of PE wax, 0.6-0.9 parts of AC foaming agent, 0.9-1.2 parts of NC foaming agent.

[0050] The preparation method comprises the following steps:

[0051] The above-mentioned raw materials are hot-mixed at 115-130°C for 13 minutes and cold-mixed at 25-40°C for 40 minutes in proportion to obtain the mixed material; the mixed material is plasticized and extruded in a twin-screw extruder; the twin-screw extruder The machine is divided into eight heating zones; the temperature of the first heating zone is 140°C, and the time is 60min; the temperature of the second heating zone is 145~150°C, and the time is 60...

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Abstract

The invention provides a wood plastic board, and belongs to the technical field of composite board preparation. According to the wood plastic board, ecological wood powder replaces part of wood powder, resources can be saved, PVC (polyvinyl chloride), calcium powder, wood powder and ecological wood powder can be uniformly mixed in the presence of stabilizers, a homogeneous system is formed, besides, the homogeneous system is sufficiently foamed under combined action of raw materials such as foam regulators, foaming agents and stearic acid, and the mechanical property and the product qualification ratio of the wood plastic board are improved. An embodiment shows that the tensile strength of the wood plastic board reaches 23.0-23.9MPa, the shore hardness of the wood plastic board is 58-64HD,and the wood plastic board has an excellent mechanical property.

Description

technical field [0001] The invention relates to the technical field of composite board preparation, in particular to a wood-plastic board and a preparation method thereof. Background technique [0002] Wood-plastic material is a high-tech green and environmentally friendly new decorative material mainly made of wood as the basic material, thermoplastic polymer material (plastic) and processing aids, etc., mixed evenly and then heated and extruded by mold equipment. It has the properties and characteristics of wood and plastic, and is a new type of composite material that can replace wood and plastic. [0003] The preparation of traditional wood-plastic panels needs to granulate wood powder first, and then the wood powder can be processed into wood-plastic panels after the granulation is completed. This processing method leads to low strength of wood-plastic panels and cumbersome steps. Another method is to directly process wood powder and other materials as raw materials, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L97/02C08L23/28C08K3/26C08K5/09C08J9/10
CPCC08J9/0023C08J9/0066C08J9/0095C08J9/103C08J2203/04C08J2327/06C08J2423/28C08J2497/02
Inventor 周灿何兴灏黎栋
Owner 六盘水康博木塑科技有限公司
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