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Low-melting-point fiber-based thermoplastic type fiber-reinforced composite plate used for wood and preparation method

A low-melting point fiber and fiber-reinforced technology, which is applied in the field of pre-woven mixed fabric structures for wood and thermoplastic fiber-reinforced wood panels, can solve the problems of excessive extrusion of FRP board resin, easy peeling of FRP boards, easy peeling of reinforced boards, etc. , to achieve the effects of preventing light aging, reducing production costs and high processing efficiency

Inactive Publication Date: 2015-12-23
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of engineering wood composite material has defects such as easy peeling between wood and FRP board, easy peeling between multi-layer fabric layers of reinforced board, excessive resin extrusion of FRP board, and resin cracking first.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A low-melting-point fiber-based thermoplastic fiber-reinforced composite board for wood is made by the following method:

[0025] 3 layers of bottom layer mixed fabric, 5 layers of middle layer mixed fabric and 2 layers of surface layer mixed fabric are tightly wound on the sylvestris pine solid wood board successively (one layer is made by wrapping the fabric on both sides of the solid wood board), and the pressure is 10MPa and 195℃ by molding machine. Hot pressing at high temperature for 12 minutes, cooling and shaping to obtain a low-melting point fiber-based thermoplastic fiber-reinforced composite panel for wood, with an average tensile strength of 212MPa and an energy of 4.1J at the peak load impact.

[0026] The microscopic morphology of the tensile fracture interface shows that the ramie fiber and the polypropylene fiber matrix are evenly combined, and the polypropylene fiber is hot-melted and covered on the surface of the ramie fiber; with the elongation and def...

Embodiment 2

[0041] A low-melting-point fiber-based thermoplastic fiber-reinforced composite board for wood is made by the following method:

[0042] 2 layers of bottom layer mixed fabric, 2 layers of middle layer mixed fabric and 2 layers of surface layer mixed fabric are tightly wound on the radiata pine solid wood board in turn, and then hot pressed at 12MPa pressure and 200°C for 12 minutes by a molding machine, cooled and shaped to obtain a low melting point for wood Fiber-based thermoplastic fiber-reinforced composite panels with an average tensile strength of 412MPa.

[0043] Preparation of bottom blend fabric:

[0044] The yarn made of hemp fiber (yarn fineness 28tex) is used as warp and the yarn made of polypropylene fiber (yarn fineness 92tex) is used as weft yarn, using knotting and re-weaving structure to make the first blend Braid;

[0045] Preparation of middle layer hybrid fabric (domestic carbon fiber HF10 / polypropylene core-spun yarn):

[0046] Polypropylene-wound domesti...

Embodiment 3

[0055] In order to improve the strength of a low-melting-point fiber-based thermoplastic fiber-reinforced composite board for wood in Example 1, two layers of black gem fiber single-phase cloth were composited with resin on the outermost layer of the FRP board by using a vacuum-assisted molding method.

[0056] Preparation of composite resin: mix epoxy resin E-51, phenalkamine epoxy resin and auxiliary active silica, let stand for 10 minutes, and carry out vacuuming and air bubble treatment. The epoxy resin E-51, The weight ratio of phenalkamine epoxy resin is 100:30, and the weight ratio of the sum of epoxy resin E-51 and phenalkamine epoxy resin to silicon dioxide is 100:5.

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Abstract

The invention discloses a low-melting-point fiber-based thermoplastic type fiber-reinforced composite plate used for wood and a preparation method. The preparation method comprises the following steps: successively winding bottom-layer mixed fabrics, intermediate-layer mixed fabrics and surface-layer mixed fabrics on a solid wood board, and carrying out hot-pressing and cooling shaping via a molding press so as to obtain the low-melting-point fiber-based thermoplastic type fiber-reinforced composite plate used for the wood, wherein the bottom-layer mixed fabrics are made of hemp fibers and low-melting-point fibers; the intermediate-layer mixed fabrics are made of high-strength and high-elasticity fibers and the low-melting-point fibers; and the surface-layer mixed fabrics are made of surface-modified inorganic fibers and the low-melting-point fibers. According to the invention, binding compound fastness between the composite plate and the wood is obtained; deformation energy generated by the wood due to changes with temperature and humidity is absorbed, so fatigue life of a wood composite material is improved; fire prevention, damp prevention, mildew prevention, corrosion prevention, pest prevention, and illumination aging prevention of a FRP plate substrate are guaranteed; stripping resistance and high processing efficiency are obtained; and a plurality of options of materials and structures are realized, so production cost is reduced.

Description

technical field [0001] The invention belongs to a composite material and a preparation method thereof, and more specifically relates to a pre-woven mixed fabric structure for wood and a thermoplastic fiber-reinforced wood board. Background technique [0002] Traditional engineering wood composite materials adopt a two-step molding and gluing method: firstly, fiber reinforced composite panels (Fiber Reinforced Plastics, FRP) are made, and then the FRP panels are glued to the solid wood panels (CN2007101188874). This kind of engineering wood composite material has defects such as easy peeling between wood and FRP boards, easy peeling between multilayer fabric layers of reinforced boards, excessive resin extrusion of FRP boards, and early resin cracking. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a low-melting-point fiber-based thermoplastic fiber-reinforced composite board for wood. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B21/10B32B9/02B32B9/04B32B27/02B32B5/02B32B27/16B32B33/00B32B37/06B32B37/10
CPCB32B21/10B32B2250/03B32B2262/0253B32B2262/0276B32B2262/065B32B2305/20B32B2307/304B32B2307/3065B32B2307/552B32B2307/7145B32B2307/752B32B2307/764B32B2317/10B32B2317/16B32B2323/10
Inventor 刘华武钟智丽董卫国
Owner TIANJIN POLYTECHNIC UNIV
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