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Formaldehyde-free flame-retardant magnesium oxychloride cement-based wood adhesive and preparation method thereof

A technology of adhesives and lightly burned magnesia, applied in adhesives, inorganic adhesives, adhesive additives, etc., can solve problems such as poor water resistance, fire hazards, and formaldehyde pollution of magnesium oxychloride cement-based adhesives, and achieve Solve the problems of formaldehyde pollution and fire hazards, no formaldehyde release, good water resistance

Pending Publication Date: 2022-05-24
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an adhesive, which can effectively solve the problems of formaldehyde pollution and fire hazards in traditional adhesives, and the poor water resistance of magnesium oxychloride cement-based adhesives and the presence of The problem of weak interface layer; Another object of the present invention is to provide the preparation method of this adhesive

Method used

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  • Formaldehyde-free flame-retardant magnesium oxychloride cement-based wood adhesive and preparation method thereof
  • Formaldehyde-free flame-retardant magnesium oxychloride cement-based wood adhesive and preparation method thereof
  • Formaldehyde-free flame-retardant magnesium oxychloride cement-based wood adhesive and preparation method thereof

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Embodiment 1

[0041] The present embodiment provides an adhesive comprising components of the following weight: lightly burned magnesium oxide 106 parts, magnesium chloride hexahydrate 64 parts, water 40 parts, biochar 5.25 parts.

[0042] The present embodiment also provides a method for preparing the above adhesive: comprising the following steps:

[0043] (1) Disperse magnesium chloride hexahydrate in water and stir evenly at room temperature;

[0044] (2) The lightly burned magnesium oxide and biochar are slowly added to the dispersion obtained in step (1), and stirred evenly at room temperature to obtain a magnesium oxychloride cementitious adhesive with a porous structure of cuttlefish bone.

Embodiment 2

[0046] The present embodiment provides an adhesive comprising components of the following weight: lightly burned magnesium oxide 106 parts, magnesium chloride hexahydrate 64 parts, water 40 parts, biochar 10.5 parts.

[0047] The present embodiment also provides a method for preparing the above adhesive: comprising the following steps:

[0048] (1) Disperse magnesium chloride hexahydrate in water and stir evenly at room temperature;

[0049] (2) The lightly burned magnesium oxide and biochar are slowly added to the dispersion obtained in step (1), and stirred evenly at room temperature to obtain a magnesium oxychloride cementitious adhesive with a porous structure of cuttlefish bone.

Embodiment 3

[0051] The present embodiment provides an adhesive comprising components of the following weight: lightly burned magnesium oxide 106 parts, magnesium chloride hexahydrate 64 parts, water 40 parts, biochar 15.75 parts.

[0052] The present embodiment also provides a method for preparing the above adhesive: comprising the following steps:

[0053] (1) Disperse magnesium chloride hexahydrate in water and stir evenly at room temperature;

[0054] (2) The lightly burned magnesium oxide and biochar are slowly added to the dispersion obtained in step (1), and stirred evenly at room temperature to obtain a magnesium oxychloride cementitious adhesive with a porous structure of cuttlefish bone.

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Abstract

The invention relates to the technical field of inorganic adhesives, in particular to a formaldehyde-free flame-retardant magnesium oxychloride cement-based wood adhesive and a preparation method thereof. The adhesive is prepared from the following components in parts by weight: 100 to 150 parts of light calcined magnesia, 60 to 100 parts of magnesium chloride hexahydrate and 5 to 40 parts of charcoal. The adhesive provided by the invention has the characteristics of good water resistance, high compressive strength, flame retardance, no formaldehyde release, high bonding strength and low cost, can relieve a wood filtration effect, realizes structural regulation and control of magnesium oxychloride cement at a wood bonding interface, eliminates a weak interface layer, and can meet process requirements and practical performance of the adhesive.

Description

Technical field [0001] The present invention relates to the technical field of inorganic adhesives, in particular to an aldehyde-free flame retardant magnesium oxychloride cementitious wood adhesive and a preparation method thereof. Background [0002] In recent years, precious wood resources are relatively scarce, plantation resources are abundant, the use of plantation fast-growing timber through adhesives to prepare wood-based panels is the main raw material for furniture flooring, interior decoration and decoration in the living environment. At present, the vast majority of wood-based panel industry adhesives are urea-formaldehyde resins and their modified products, which are widely used in the wood industry because of their advantages of sufficient raw materials, low prices and good water solubility, but such wood products have the problem of formaldehyde release and fire hazards. With the improvement of people's living standards, the safety of human settlements has attracte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/00C09J11/04
CPCC09J1/00C09J11/04Y02W30/91
Inventor 李建章韩宇飞徐艳涛高强周文瑞龚珊珊曹金锋叶倩倩周文光
Owner BEIJING FORESTRY UNIVERSITY
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