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Process for producing glass fiber reinforced triploid Chinese white poplar wood composite material (three-layer)

A composite material and glass fiber technology, applied in the direction of glass/slag layered products, layered products, wood layered products, etc., can solve problems such as the decrease of water absorption thickness expansion rate and the decrease of internal bonding strength.

Inactive Publication Date: 2015-09-30
张双保 +6
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Problems solved by technology

The test results show that: the static bending strength and elastic modulus of the particleboard (plywood) reinforced by alkali-free plain glass fiber cloth (thin felt) have increased, the water absorption thickness expansion rate has decreased, and the internal bonding strength has decreased.

Method used

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  • Process for producing glass fiber reinforced triploid Chinese white poplar wood composite material (three-layer)

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Embodiment Construction

[0023] attached figure 1 It is the structural form diagram of glass fiber reinforced triploid poplar wood composite material (three layers).

[0024] The present invention adopts the F-W-F structure, F is glass fiber cloth, W is wood particle board, and the technological process is as follows: (1) The surface of wood particle board is sanded and coated with PF resin. The wood shavings are taken from the four-year-old young triploid Populus tomentosa cultivated by Beijing Forestry University in Jinzhou, Hebei. They are processed into shavings in the laboratory and dried to a moisture content of 2-4%.

[0025] (2) Put the glass fiber cloth and the treated wood particle board according to the attached figure 1 Structural blanks in . The glass fibers are obtained from the glass fiber workshop of Beijing No. 251 Factory. The glass fiber used to make composite materials is usually alkali-free glass fiber, which contains a large amount of oxides of aluminum, boron, and silicon, so...

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Abstract

The invention relates to the technical field of molding of wood composite materials and particularly relates to a process for producing a glass fiber reinforced triploid Chinese white poplar wood composite material (three-layer). According to the process, the composite material is prepared from triploid Chinese white poplars and glass fiber, which serve as main raw materials, through adopting low-toxicity PF resin BN-1 of Beijing Forestry University as an adhesive, adopting a paraffin emulsion BZ-1 of Beijing Forestry University as a water repellent, adopting BZ-2 of Beijing Forestry University as a surface treating agent and adopting BZ-3 of Beijing Forestry University as a demolding agent. The optimal production process effect is achieved through controlling the glue spread of a substrate, hot pressing temperature, hot pressing time, unit pressure, target density and the amount of the added surface treating agent. Meanwhile, the properties of the prepared composite material can reach or exceed the standard requirements of European-Community oriented strand boards (PrEN300-94OSB / 4), so that the prepared composite material can serve as an engineering structure material.

Description

Technical field: [0001] The invention relates to the technical field of wood composite material mold manufacturing, in particular to a preparation process for the production of glass fiber reinforced triploid poplar tomentosa wood composite material (three layers). Background technique: [0002] Timber is one of the indispensable important materials in the national economy. Today, the supply and demand of timber is very tight. In order to alleviate this contradiction, my country has adopted a large number of measures to increase timber resources by building artificial forests. At present, the area of ​​artificial forests has ranked first in the world, but due to Its material is difficult to meet the requirements of various timber fields, resulting in the underutilization of plantation timber. Therefore, how to rationally utilize existing plantation timber to produce high value-added wood composite materials has become one of the most important frontier research topics in the c...

Claims

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Application Information

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IPC IPC(8): B32B21/10B32B21/14B32B17/02B32B37/06B32B37/12
Inventor 张双保于雪斐王翠翠宋伟王丹丹侯国君于争争
Owner 张双保
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