Wood and straw fiberboard utilizing inorganic adhesive and preparation method

An inorganic adhesive and straw fiber technology, applied in the field of composite materials, can solve the problems of unavoidable free chloride ions, complex preparation process of inorganic adhesive, large energy consumption, etc., and achieve excellent physical comprehensive performance, low cost and easy availability , Good nail holding power

Inactive Publication Date: 2021-05-28
马雯瑾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above that the formula contains a large amount of magnesium chloride, and it is difficult to avoid a large amount of free chloride ions
[0005] In the literature that can be consulted, it is...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1. A wood and straw fiberboard utilizing an inorganic adhesive, comprising the following raw materials in parts by weight: 40-50 parts of light-burned magnesia powder, 2-5 parts of talcum powder, 1-3 parts of high-alumina cement, 0.2-0.5 parts of phosphogypsum, 7-12 parts of fly ash or slag powder, 3-5 parts of activated bauxite filler, 1-3 parts of kaolin, 25-35 parts of straw fiber, sawdust, or bamboo fiber, heptahydrate 22-30 parts of magnesium sulfate, 0.1-0.3 parts of aluminum sulfate hexadecahydrate, 0.1-0.5 parts of citric acid, 0.2-0.5 parts of trisodium phosphate, 0.2-0.4 parts of ferrous sulfate, 0.2-0.3 parts of AF superplasticizer, 0.01-0.02 parts of sodium pyrophosphate, 0.01-0.02 parts of oxalic acid, 0.05-0.1 parts of sodium tetraborate decahydrate, 0.01-0.02 parts of sodium fluorosilicate, 0.05-0.1 parts of sodium silicate, 0.01-0.02 parts of potassium nitrite, 25-30 parts of water;

[0025]Among them, in the present invention, it is required...

Embodiment 2

[0026] Embodiment 2, a wood and straw fiberboard utilizing inorganic adhesives, comprising the following raw materials in parts by weight: 40 parts of light-burned magnesium oxide powder, 3 parts of talcum powder, 2 parts of high alumina cement, 0.3 part of phosphogypsum, powder 10 parts of coal ash, 4 parts of activated bauxite filler, 1 part of kaolin, 30 parts of straw fiber, sawdust, or bamboo fiber, 25 parts of magnesium sulfate heptahydrate, 0.1 part of aluminum sulfate hexahydrate, 0.3 part of citric acid, phosphoric acid 0.3 part of trisodium, 0.3 part of ferrous sulfate, 0.2 part of AF superplasticizer, 0.01 part of sodium pyrophosphate, 0.01 part of oxalic acid, 0.05 part of sodium tetraborate decahydrate, 0.01 part of sodium fluorosilicate, 0.05 part of sodium silicate, Potassium nitrite 0.01 part, water 28 parts;

[0027] The preparation process is as follows: lightly burned magnesia powder, talcum powder, high alumina cement, phosphogypsum, fly ash, activated baux...

Embodiment 3

[0028] Example 3, a kind of wood and straw fiberboard using inorganic adhesives and its preparation method, 38 parts of light-burned magnesium oxide powder, 2 parts of talcum powder, 2 parts of high alumina cement, 0.3 part of phosphogypsum, 10 parts of slag powder, 5 parts of activated bauxite filler, 2 parts of kaolin, 25 parts of straw fiber, sawdust, or bamboo fiber, 25 parts of magnesium sulfate heptahydrate, 0.2 part of aluminum sulfate hexadecahydrate, 0.3 part of citric acid, 0.3 part of trisodium phosphate, 0.3 parts of ferrous sulfate, 0.2 parts of AF superplasticizer, 0.01 parts of sodium pyrophosphate, 0.01 parts of oxalic acid, 0.05 parts of sodium tetraborate decahydrate, 0.01 parts of sodium fluorosilicate, 0.05 parts of sodium silicate, and 0.01 parts of potassium nitrite , 30 parts of water. In addition, inorganic pigments are added as needed to make the board have a certain color decoration. At 25°C, press at 2.5MPa for 180s, remove from the mold and then cu...

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Abstract

The invention discloses a wood and straw fiberboard utilizing an inorganic adhesive and a preparation method, and the wood and straw fiberboard comprises the following raw materials in parts by weight: 40-50 parts of light calcined magnesia powder, 2-5 parts of talcum powder, 1-3 parts of high-alumina cement, 0.2-0.5 part of phosphogypsum, 7-12 parts of fly ash or slag powder, 3-5 parts of activated bauxite filler, 1-3 parts of kaolin, 25-35 parts of straw fiber, wood chip or bamboo chip fiber, 22-30 parts of magnesium sulfate heptahydrate, 0.1-0.3 part of aluminum sulfate hexadecahydrate, 0.1-0.5 part of citric acid, 0.2-0.5 part of trisodium phosphate, 0.2-0.4 part of ferrous sulfate, 0.2-0.3 part of an AF high-efficiency water reducing agent, 0.01-0.02 part of sodium pyrophosphate, 0.01-0.02 part of oxalic acid, 0.05-0.1 part of sodium tetraborate decahydrate, 0.01-0.02 part of sodium fluosilicate, 0.05-0.1 part of sodium silicate, 0.01-0.02 part of potassium nitrite and 25-30 parts of water. The invention provides a preparation method of the artificial fiber board which has no toxic and harmful substances, has environmental protection, strong comprehensive physical properties, realizes preparation at normal temperature and is simple in process.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a wood and straw fiberboard using an inorganic adhesive and a preparation method. Background technique [0002] In recent years, with the rapid development of my country's wood-based panels, interior decoration and furniture industries, the amount of wood adhesives is huge. Due to the constraints of cost and process complexity, "three aldehydes" (urea-formaldehyde resin, phenolic resin, melamine-formaldehyde Resin) mainly, the advantages are good performance, low cost, simple and mature process, and the disadvantage is the release of formaldehyde. With the improvement of people's environmental requirements, many new adhesives have been developed, such as isocyanate fiberboard adhesives, which have good performance and do not contain formaldehyde, but have VOC volatilization, poor water resistance, general non-flammability, and relatively low cost. high. The most prom...

Claims

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Application Information

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IPC IPC(8): C04B28/34
CPCC04B28/344C04B2111/00017C04B2111/00025C04B2111/28C04B2201/20C04B2201/50C04B22/066C04B22/142C04B22/148C04B22/149C04B22/085C04B22/0013C04B14/042C04B14/303C04B14/106C04B12/04C04B22/00C04B22/08C04B18/24C04B18/26C04B18/265C04B2103/302C04B24/04C04B24/06
Inventor 马雯瑾
Owner 马雯瑾
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