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Method for reinforcing woody composite honeycomb panel by glass fiber cloth

A technology of glass fiber cloth and honeycomb panels, which is applied to chemical instruments and methods, glass/slag layered products, wood layered products, etc., can solve the problems of low strength of honeycomb panels, achieve enhanced mechanical properties, expand the scope of use, The effect of alleviating the shortage of timber resources

Inactive Publication Date: 2016-06-15
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for glass fiber reinforced wooden composite honeycomb panels in order to solve the shortcomings of honeycomb panels such as softness and low strength and alleviate the current situation of wood supply shortage.

Method used

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  • Method for reinforcing woody composite honeycomb panel by glass fiber cloth
  • Method for reinforcing woody composite honeycomb panel by glass fiber cloth
  • Method for reinforcing woody composite honeycomb panel by glass fiber cloth

Examples

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specific Embodiment approach 1

[0016] Step 1. In this embodiment, firstly, the glass fiber cloth with a thickness of 0.1-0.2 mm is pasted with epoxy resin and curing agent to a honeycomb board with a thickness of 10-15 mm. The stiffness of the honeycomb board is 100-200 (g*cm), Gram weight is 600-800(g / m 2 ). In this embodiment, epoxy resin is used as a binder, ethylenediamine is used as a curing agent, the ratio of epoxy resin to ethylenediamine is 4:1-3:1, and the epoxy resin sizing amount is 300-400g / m 2 , one side sizing;

[0017] Step 2. Then place the honeycomb panel reinforced with glass fiber cloth in a cold press for cold pressing, the cold pressing time is 60-90min, and the pressure is 0.6-1.0Mpa;

[0018] Step 3. After cold pressing, paste the ash veneer with a thickness of 1.0-2.0mm with milky white glue to the surface of the glass fiber cloth reinforced honeycomb board after step 2 cold pressing. The amount of sizing of milky white glue is 170-200g. / m 2 , one side sizing;

[0019] Step ...

specific Embodiment approach 2

[0022] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the thickness of the glass fiber cloth is 0.18mm, the thickness of the honeycomb board is 12mm, the ratio of epoxy resin to ethylenediamine is 3:1, the second The cold pressing time for one time is 7min, and the pressure is 0.8Mpa; the thickness of the ash veneer is 1.2m, and the sizing amount of latex glue is 180g / m 2 , the thickness of poplar veneer is 1.5mm, and the sizing amount of latex glue is 200g / m 2 , the second cold pressing time is 40min, and the pressure is 0.5Mpa.

specific Embodiment approach 3

[0023] Embodiment 3: The difference between this embodiment and Embodiment 2 is: step (1) the ratio of epoxy resin to ethylenediamine is 3:1, and other steps are the same as Embodiment 2.

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Abstract

The invention discloses a method for reinforcing a woody composite honeycomb panel by glass fiber cloth and relates to the method for enhancing mechanical properties of the woody composite honeycomb panel through adding the glass fiber cloth between a veneering layer of a woody veneer and a substrate layer of a honeycomb panel. The method is used for overcoming the disadvantages such as coarse and loose structure and low strength of the current honeycomb panels and relieving the present situation that the wood supply is tense. The glass fiber cloth reinforced woody honeycomb panel consists of a Fraxinus mandshurica veneer 1, white glue, of which the use level is 170g / m<2> to 200g / m<2> 2, the glass fiber cloth 3, epoxy resin 4, a honeycomb panel substrate 5, white glue, of which the use level is 200g / m<2> to 240g / m<2> 6 and a poplar veneer 7. The method is characterized by comprising the following steps: (1) reinforcing the honeycomb panel by adopting the glass fiber cloth; (2) carrying out first-time cold pressing; (3) sticking the woody veneer onto the glass fiber cloth; and (4) carrying out second-time cold pressing. According to the method, the flexural strength of the glass fiber cloth reinforced woody honeycomb panel is improved by 5.5 to 6.5 times, and the flexural elastic modulus is increased by 0.5 to 1.5 times. The method has the advantages that the strength of the honeycomb panel is improved, the range of use of the honeycomb panel is enlarged, and the situation that wood resources are lack and are increasingly outstanding in supply and demand contradiction is relieved.

Description

technical field [0001] The invention relates to a method for adding glass fiber cloth between a wood veneer veneer layer and a honeycomb base material layer to enhance the mechanical properties of the material. Background technique [0002] Wood and man-made panels are the most widely used and cost-effective materials in the furniture and interior design market. In recent years, the application of wood honeycomb composite panels overcomes the shortcomings of solid wood furniture that are prone to deformation and difficult to dry, making the furniture have the excellent characteristics of light weight, and reducing the cost of transportation and packaging. In the production of panel furniture, panels with a thickness of not less than 18mm and some auxiliary accessories can be replaced by wood honeycomb composite panels. The thicker the panel, the more obvious its performance. However, wood honeycomb composite panels also have obvious disadvantages. Their mechanical strength,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/10B32B37/12B32B17/02B32B21/04B32B3/12B32B7/12
Inventor 朱晓冬刘玉黄金鑫代晶张砾丹陈改静
Owner NORTHEAST FORESTRY UNIVERSITY
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