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Method for preparing wood-plastic composite plate material through layered lamination method

A wood-plastic composite and board technology, which is applied to flat products, other household appliances, household appliances, etc., can solve the problems of low surface bonding strength, surface gelatinization and blackening, and achieve the purpose of maintaining the original color of wood powder. The method is simple and easy, The effect of shortening the heat pressing time

Inactive Publication Date: 2013-10-09
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing wood-plastic composite boards by lamination and lamination in order to solve the problems of gelatinization and blackening of the surface of wood-plastic composite boards and low surface bonding strength in the existing hot pressing method

Method used

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  • Method for preparing wood-plastic composite plate material through layered lamination method
  • Method for preparing wood-plastic composite plate material through layered lamination method
  • Method for preparing wood-plastic composite plate material through layered lamination method

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specific Embodiment approach 1

[0015] Specific implementation mode 1: The method for preparing wood-plastic composite boards by layered lamination method in this implementation mode is implemented according to the following steps:

[0016] 1. Mix biomass fiber, coupling agent, thermoplastic powder or thermoplastic fiber evenly, and then lay it into a core slab with a thickness of 3-4mm. The core slab is placed in a hot press at 170-190°C temperature, 0.5 ~ 2MPa pressure under hot pressing for 3 ~ 5min to obtain the core plate;

[0017] 2. Mix biomass fiber, coupling agent, thermoplastic powder or thermoplastic fiber evenly, pave it into a surface material with a thickness of 2-3 mm, and then lay the surface material on the upper surface of the core board obtained in step 1 and The lower surface is then placed in a hot press at a temperature of 170-190°C and a pressure of 0.5-2 MPa for 3-5 minutes to obtain a hot-pressed wood-plastic composite board;

[0018] 3. Place the hot-pressed wood-plastic composite ...

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass ratio of biomass fiber, coupling agent, thermoplastic powder or thermoplastic fiber is 1:(0.05-0.09):(0.5-1.0). Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0022] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the biomass fiber is wood fiber, straw scraps, flax chips or bamboo fiber. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a method for preparing a wood-plastic composite plate material through a layered lamination method, relates to a preparation method of the wood-plastic composite plate material, and aims to solve the problems of surface pasting blackening and low surface bonding strength of the wood-plastic composite plate material prepared through an existing hot-pressing method. The method for preparing the wood-plastic composite plate material comprises the following steps of: (1) uniformly mixing biomass fibers, a coupling agent, thermoplastic plastic powder or thermoplastic plastic fibers, paving to form a core plate blank, and hot-pressing the core plate blank in a hot press to obtain a core plate; (2) paving upper surface layer materials on upper and lower surface layers of the core plate, and continuously performing hot-pressing; (3) cold-pressing the core plate in a cold press to complete layered lamination. According to the layered lamination method, hot-pressing time is shortened, the primary color of wood powder is remained, and the pasting and blackening of surface layer biomass raw materials caused by thermal degradation are avoided. The method is mainly applied to preparation of the wood-plastic composite plate material.

Description

technical field [0001] The invention relates to a preparation method of a wood-plastic composite board. Background technique [0002] Wood-plastic composite materials are composite materials processed from wood fibers and thermoplastics. The raw materials can be waste wood, crop straw, bamboo, hemp chips and other biomass fibers, recycled polyethylene, polypropylene, polyvinyl chloride and other thermoplastics. Plastics provide a good way to recycle waste. At the same time, the prepared wood-plastic composite material has the advantages of water resistance, corrosion resistance, stable size and no formaldehyde release, and the production process and use process are environmentally friendly. It is widely used in outdoor flooring, building hanging panels, garden landscape architecture, furniture manufacturing, interior decoration, etc. [0003] The hot pressing method is one of the methods for preparing wood-plastic composite boards. It can use larger-sized biomass fiber raw...

Claims

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Application Information

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IPC IPC(8): B29D7/00
Inventor 王伟宏杜凤王海刚王清文
Owner NORTHEAST FORESTRY UNIVERSITY
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