Inorganic binder refractory artificial board material and preparation method thereof

An inorganic binder and artificial board technology, applied in the field of wood industry, can solve the problems of insufficient fire resistance and thermal stability, complicated preparation, environmental pollution, etc., and achieve the effects of good fire resistance, simple preparation process and low raw material price

Inactive Publication Date: 2015-10-07
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0009] Aiming at the above defects or improvement needs of the prior art, the present invention provides a novel inorganic binder refractory wood-based panel material and its preparation method, which uses a combination of water glass binder and wooden components to prepare a formaldehyde-free refractory panel. Wood-based panel materials, thus solving the technical problems of polluting the environment, complicated preparation, high cost, insufficient fire resistance and thermal stability

Method used

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  • Inorganic binder refractory artificial board material and preparation method thereof

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[0030] According to another aspect of the present invention, also provide a kind of preparation method of inorganic binder refractory wood-based panel material, comprise the following steps:

[0031] (1) mix and stir the wooden component and the water glass binder at normal temperature, thus obtain the mixture sawdust;

[0032] (2) put the mixed material sawdust obtained into the mould, press and form it and heat it, and after heating and solidifying, demold to obtain the inorganic binder refractory wood-based panel;

[0033] (3) In the case of high ambient humidity, the inorganic binder refractory wood-based panels obtained in (2) were subjected to moisture-proof treatment.

[0034] In step (1), the mass ratio of the wooden component to the water glass binder is 1:0.5-1:3, and the modulus of the water glass binder is 1.5-3.0.

[0035] In step (2), the pressing pressure is 4MPa-20MPa.

[0036] In step (3), the moisture-proof treatment includes adding a moisture-resistant mod...

Embodiment 1

[0040] Inorganic binder refractory wood-based panel material preparation: 50 parts of sawdust, 150 parts of potassium silicate (modulus about 3.0).

[0041] Add the sawdust to the mixer at room temperature, then add the inorganic binder and mix evenly to obtain the mixed sawdust; then pave the mixed sawdust in the mold and press it under a pressure of 4 MPa and heat it. After heating and solidifying, demould and cool to obtain the inorganic Adhesive refractory wood-based panels.

[0042] According to the three-point bending method specified in GB / T 17657-2013, the static bending strength of the inorganic binder fire-resistant wood-based panels obtained in this example is 13MPa-15MPa.

Embodiment 2

[0044] Inorganic binder refractory wood-based panels were produced according to the method of Example 1, except that an additional 3 parts of organic esters were added to the mixture sawdust.

[0045]According to the three-point bending method specified in GB / T 17657-2013, the static bending strength of the inorganic binder fire-resistant wood-based panel obtained in this example is 12MPa-14MPa, which is lower than the moisture absorption rate of the inorganic binder fire-resistant wood-based panel in Example 1 3% to 5%.

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Abstract

The invention discloses an inorganic binder refractory artificial board material and a preparation method thereof. The inorganic binder refractory artificial board material comprises a wood component and an environment-pollution-free sodium silicate binder, wherein the modulus of the sodium silicate binder is 1.5-3.0. The preparation method comprises the following steps: uniformly mixing the wood component and sodium silicate binder, putting the mixture into a mold, compacting, heating for thermosetting, and demolding to obtain the inorganic binder refractory artificial board. The method can be used for preparing the inorganic binder refractory artificial board which has the advantages of no formaldehyde release, favorable static bending strength, favorable elastic modulus, favorable hydroscopic property, favorable heat stability and favorable fire resistance. The method has the advantages of wide raw material sources and low price.

Description

technical field [0001] The invention belongs to the field of wood industry, and in particular relates to a green and environment-friendly inorganic binder refractory wood-based panel material and a preparation method thereof. Background technique [0002] With the continuous development of the wood industry, the application range of wood-based panels is also continuously expanding. More and more solid wood products are replaced by wood-based panels, and its products are also widely accepted by consumers. The current wood-based panels mainly include plywood, particleboard, fiberboard and so on. Due to the excellent performance of wood-based panels, the products are mainly used in the home furnishing industry, construction industry, transportation industry, etc. Wood-based panels are mainly pressed and formed by mixing binders and wood chips. [0003] At present, organic adhesives such as urea-formaldehyde resin, phenolic resin, and polycyanamide-formaldehyde resin are the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L29/04C08L83/04C08K3/34
Inventor 樊自田杨力刘富初
Owner HUAZHONG UNIV OF SCI & TECH
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