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Sandwich-structure flame-retardant wood-plastic composite material and preparation method thereof

A wood-plastic composite material, sandwich structure technology, applied in the direction of wood layered products, chemical instruments and methods, lamination, etc., can solve the problems of low mechanical properties, low flame retardant effect, etc., achieve high mechanical properties, acid and alkali resistance Cleaning, easy-to-clean effect

Active Publication Date: 2021-11-09
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of low flame-retardant effect and low mechanical properties of existing wood-plastic composite materials, and provides a sandwich-structure flame-retardant wood-plastic composite material and a preparation method thereof

Method used

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  • Sandwich-structure flame-retardant wood-plastic composite material and preparation method thereof

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Experimental program
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Effect test

specific Embodiment approach 1

[0057] Specific Embodiment 1: In this embodiment, a flame-retardant wood-plastic composite material with a sandwich structure, the flame-retardant wood-plastic composite material with a sandwich structure is a sandwich structure, and from top to bottom are the upper surface layer, the first flame-retardant carbonization room Layer, core layer, second flame-retardant carbonized interlayer, and lower surface layer; when a multi-layer core layer is set, a flame-retardant interlayer is arranged between adjacent layer materials of the core layer; the core layer is a wood-plastic composite material, The upper surface layer and the lower surface layer are both stone-plastic composite materials, the flame-retardant interlayer is flame-retardant composite material, and the first flame-retardant carbonized interlayer and the second flame-retardant carbonized interlayer are both flame-retardant carbonized materials.

specific Embodiment approach 2

[0058] Embodiment 2: The difference between this embodiment and Embodiment 1 is that a flame-retardant interlayer is arranged between each layer. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0059] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is:

[0060] The raw materials for the preparation of the wood-plastic composite material include polymer resin, compatibilizer and plant fiber, in parts by mass: 25-40 parts of polymer resin, 2-5 parts of compatibilizer, and 60-75 parts of plant fiber. share;

[0061] The raw materials for the preparation of the stone-plastic composite material include polymer resin, flame retardant material, compatibilizer and stone powder, in parts by mass: 25 to 40 parts of polymer resin, ≤30 parts of flame retardant material, and 2 parts of compatibilizer ~5 parts, stone powder is 30~60 parts;

[0062] The raw materials for preparing the flame-retardant composite material include flame-retardant materials and polymer resins, in parts by mass: 50-80 parts for polymer resins, and 20-50 parts for flame-retardant materials;

[0063] The raw materials for the preparation of the flame-r...

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Abstract

The invention discloses a sandwich-structure flame-retardant wood-plastic composite material and a preparation method thereof, and relates to the field of wood-plastic composite materials and preparation methods thereof. The technical problems that an existing wood-plastic composite material is not high in flame retardant effect and low in mechanical property are solved. The wood-plastic composite material is of a sandwich structure and sequentially comprises an upper surface layer, a first flame-retardant carbonized interlayer, a core layer, a second flame-retardant carbonized interlayer and a lower surface layer from top to bottom. The method comprises the following steps: preparing particles of each layer, and extruding. According to the invention, the stone-plastic composite material with good flame retardant property is paved on the surface of the wood-plastic composite material to form an interlayer structure, and a flame retardant layer can be added between the interlayers, so that the purpose of flame retardance is achieved, and meanwhile, the wood-plastic core layer retains good mechanical property. The preparation method is used for preparing the flame-retardant wood-plastic composite material with the sandwich structure.

Description

technical field [0001] The invention relates to the field of wood-plastic composite material and its preparation method. Background technique [0002] Wood-plastic composite material is a new type of green and environmentally friendly composite material. It uses plant fibers such as wood fiber or bamboo fiber and thermoplastic polymers to melt and compound at high temperature, and is made by hot pressing, extrusion, injection molding and other molding processing methods. The preparation of wood-plastic composite materials can utilize a large number of waste plastics, waste wood, wood processing residues and crop straw, etc., thus helping to reduce the pollution caused by these waste materials. It has advantages in processing technology, performance, and dimensional stability, and is widely used in decoration, landscape design, automobiles and other fields. Compared with traditional wood materials, wood-plastic composite materials have the advantages of low water absorption,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00
CPCB32B9/002B32B9/045B32B27/32B32B27/08B32B27/18B32B21/02B32B21/08B32B37/06B32B37/10C08J5/18B29D7/00B32B2262/067B32B2250/40B32B2307/3065B32B2307/714B32B2307/7246C08J2397/02C08J2423/06C08J2497/02C08J2323/06C08J2451/06C08K5/098C08K2003/265C08J2497/00C08J2397/00C08K2003/323
Inventor 王伟宏魏童霍玉娜贾雪周雪莲房轶群单伟东
Owner NORTHEAST FORESTRY UNIVERSITY