Carbon fiber cloth reinforced poplar laminated veneer lumber and making method thereof

A technology of poplar veneer and carbon fiber cloth, which is applied in the direction of wood layered products, wood veneer bonding, wood processing appliances, etc. problem, to achieve the effect of not easy delamination, wide application range and high strength

Inactive Publication Date: 2015-04-08
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the mechanical strength of the existing poplar veneer laminated lumber is not high, the interface bonding ability between carbon fiber and wood is poor, and the product is prone to delamination, and a carbon fiber cloth reinforced poplar veneer is provided Laminated lumber and its preparation method

Method used

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  • Carbon fiber cloth reinforced poplar laminated veneer lumber and making method thereof

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Experimental program
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specific Embodiment approach 1

[0016] Embodiment 1: This embodiment is a carbon fiber cloth reinforced poplar veneer laminated lumber prepared from 7 poplar veneers and 2 carbon fiber cloths, and from top to bottom are poplar veneer, surface Treated carbon fiber cloth, poplar veneer, poplar veneer, poplar veneer, poplar veneer, poplar veneer, surface treated carbon fiber cloth and poplar veneer.

[0017] The advantage of this implementation mode:

[0018] 1. The carbon fiber cloth reinforced poplar laminated veneer lumber obtained in this embodiment has the advantages of high strength, wide application range, and not easy to delaminate;

[0019] 2. The static bending strength of the carbon fiber cloth reinforced poplar laminated veneer lumber obtained in this embodiment is 62MPa-65MPa, the elastic modulus is 8808MPa-8810MPa, and the shear strength is 8MPa-9MPa.

[0020] In this embodiment, a carbon fiber cloth-reinforced poplar laminated veneer lumber and a preparation method thereof can be obtained.

specific Embodiment approach 2

[0021] Specific implementation mode two: this implementation mode is a kind of preparation method of carbon fiber cloth reinforced poplar veneer laminated lumber, specifically completes according to the following steps:

[0022] 1. Add solvent to the silane coupling agent KH550 to obtain a silane coupling agent KH550 solution with a concentration of 1.0% to 2.5%; immerse the carbon fiber cloth in the silane coupling agent KH550 solution with a concentration of 1.0% to 2.5% for 5 minutes to After 15 minutes, take the carbon fiber cloth out of the silane coupling agent KH550 solution with a concentration of 1.0% to 2.5%, and then dry it at a temperature of 100°C to 130°C for 15min to 25min to obtain a carbon fiber cloth after surface treatment;

[0023] 2. Assemble the 7 poplar veneers according to the grain, and get the 7 poplar veneers after the grain formation. From top to bottom, they are 1# poplar veneer, 2# poplar veneer, and 3# poplar veneer. #poplar veneer, 4# poplar ven...

specific Embodiment approach 3

[0030] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, solvent is added to the silane coupling agent KH550 to obtain a silane coupling agent KH550 solution with a concentration of 1.5%. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a carbon fiber cloth reinforced poplar laminated veneer lumber and a making method thereof, relates to a laminated veneer lumber and a preparation method thereof, and aims to solve the problems that the mechanical strength of the conventional poplar laminated veneer lumber is low, an interface bonding capability of carbon fibers and lumber is poor, and delamination is easily caused. The carbon fiber cloth reinforced poplar laminated veneer lumber is made from seven poplar veneers and two pieces of carbon fiber cloth, and sequentially comprises a poplar veneer I, one surface-treated carbon fiber cloth, a poplar veneer II, a poplar veneer III, a poplar veneer IV, a poplar veneer V, a poplar veneer VI, the other surface-treated carbon fiber cloth and a poplar veneer VII from top to bottom. The preparation method comprises the following steps: firstly pre-treating the carbon fiber cloth, then gluing, and finally thermally-pressing to obtain the carbon fiber cloth reinforced poplar laminated veneer lumber. According to the invention, the carbon fiber cloth reinforced poplar laminated veneer lumber and the preparation method thereof can be obtained.

Description

technical field [0001] The present invention relates to laminated veneer and its preparation method. Background technique [0002] Since Finland’s Finfores Company and Rate Company jointly built the world’s first laminated veneer lumber production line in 1976, laminated veneer lumber has developed rapidly. my country began to study this product in the mid-1980s, but at that time it was still The main research is non-structural laminated veneer lumber. With the rapid economic development and high requirements for building structural materials, non-structural laminated veneer lumber obviously cannot meet the needs of engineering structures. its scope of application. [0003] Carbon fiber has the advantages of small specific gravity, excellent heat resistance, small thermal expansion coefficient, high thermal conductivity, good corrosion resistance and good electrical conductivity, etc. It can be used as a reinforcing material in the field of laminated veneer lumber products....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/04B27D1/08B32B7/12B32B21/10B32B37/12B32B37/06B32B37/10
CPCB27D1/04B27D1/08B32B7/12B32B21/10B32B37/06B32B37/10B32B37/12
Inventor 张冬妍刘海明孙丽萍
Owner NORTHEAST FORESTRY UNIVERSITY
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