Inorganic adhesive for preparing straw-based panel, ecological straw-based panel and preparation method of ecological straw-based panel

A technology of inorganic adhesives and straw boards, applied in the direction of inorganic adhesives, adhesives, adhesive additives, etc., can solve the problems of unsimple preparation process, long-term release of formaldehyde, high cost of boards, etc., and achieve wide sources and strong fire resistance , the effect of high mechanical strength

Active Publication Date: 2019-05-14
东北大学秦皇岛分校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, there are many factors that affect the quality of finished boards, but until now, adhesives have become a bottleneck restricting the quality of crop straw boards
Using urea-formaldehyde resin or phenolic resin as adhesive, although the cost of the board is low, there is a problem of long-term release of harmful gases such as formaldehyde
Although there are also straw boards that do not release formaldehyde, they use relatively expensive isocyanate binders, resulting in higher cost of the boards
In addition, the current straw boards still have problems such as low strength, easy deformation, and not simple preparation process.

Method used

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  • Inorganic adhesive for preparing straw-based panel, ecological straw-based panel and preparation method of ecological straw-based panel
  • Inorganic adhesive for preparing straw-based panel, ecological straw-based panel and preparation method of ecological straw-based panel
  • Inorganic adhesive for preparing straw-based panel, ecological straw-based panel and preparation method of ecological straw-based panel

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Embodiment 1

[0077] The ecological straw plate described in this embodiment, its raw material includes the following components in parts by mass:

[0078] 50 parts of straw, 3.997 parts of bamboo charcoal, 4 parts of zeolite, 12 parts of magnesium oxide, 6 parts of aluminum oxide, 4 parts of silicic acid, 10 parts of calcium oxide, 0.003 parts of additive, and 10 parts of water.

[0079] Among them, the additive contains sodium silicate, sodium stearate, sodium dodecylsulfonate, the mass ratio of each component is 3:1:0.2, the particle size of zeolite is 80 mesh, the particle size of bamboo charcoal is 100 mesh, calcium oxide, The particle size of magnesium oxide and aluminum oxide is 300 mesh.

[0080] The specific preparation method of the ecological straw plate is as follows:

[0081] 1. Select high-quality rice straw and crush it to a particle size of 50 mesh;

[0082] 2. Add 10 parts of calcium oxide, 12 parts of magnesium oxide, 6 parts of aluminum oxide and 10 parts of water into ...

Embodiment 2

[0088] The ecological straw plate described in this embodiment, its raw material includes the following components in parts by mass:

[0089] 50 parts of straw, 3.997 parts of bamboo charcoal, 4 parts of zeolite, 12 parts of magnesium oxide, 6 parts of aluminum oxide, 4 parts of silicic acid, 10 parts of calcium oxide, 0.003 parts of additive, and 10 parts of water.

[0090] Among them, the additive contains sodium silicate, sodium stearate, sodium dodecylsulfonate, the mass ratio of each component is 3:0.1:0.1, the particle size of zeolite is 80 mesh, the particle size of bamboo charcoal is 100 mesh, calcium oxide, The particle size of magnesium oxide and aluminum oxide is 300 mesh.

[0091] The specific preparation method of the ecological straw plate is as follows:

[0092] 6. Select high-quality rice straw and crush it to a particle size of 50 mesh;

[0093] 7. Add 10 parts of calcium oxide, 12 parts of magnesium oxide, 6 parts of aluminum oxide and 10 parts of water int...

Embodiment 3

[0099] The ecological straw plate described in this embodiment, its raw material includes the following components in parts by mass:

[0100] 50 parts of straw, 3.997 parts of bamboo charcoal, 4 parts of zeolite, 12 parts of magnesium oxide, 6 parts of aluminum oxide, 4 parts of silicic acid, 10 parts of calcium oxide, 0.003 parts of additive, and 10 parts of water.

[0101] Among them, the additive contains sodium silicate, sodium stearate, sodium dodecylsulfonate, the mass ratio of each component is 3:2:0.5, the particle size of zeolite is 80 mesh, the particle size of bamboo charcoal is 100 mesh, calcium oxide, The particle size of magnesium oxide and aluminum oxide is 300 mesh.

[0102] The specific preparation method of the ecological straw plate is as follows:

[0103] 11. Select high-quality rice straw and crush it to a particle size of 50 mesh;

[0104] 12. Add 10 parts of calcium oxide, 12 parts of magnesium oxide, 6 parts of aluminum oxide and 10 parts of water int...

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Abstract

The invention provides an inorganic adhesive for preparing a straw-based panel, an ecological straw-based panel and a preparation method of the ecological straw-based panel. The inorganic adhesive comprises the following components in parts by mass: 1-20 parts of magnesium oxide, 4-10 parts of alumina, 2-20 parts of calcium oxide, 1-12 parts of silicic acid, 0.5-8 parts of zeolite and 1-15 parts of bamboo charcoal. The ecological straw-based panel comprises the inorganic adhesive, 42-80 parts of straw and 6-12 parts of water. The inorganic adhesive and the ecological straw-based panel do not contain toxic or harmful substances, and do not volatilize harmful gases such as formaldehyde, toluene or the like during use, and the adhesive has strong adhesiveness to straw powder, so that the obtained straw-based panel has high mechanical strength.

Description

technical field [0001] The invention belongs to the technical field of environmental protection boards, and in particular relates to an inorganic adhesive for preparing straw boards, an ecological straw board and a preparation method thereof. Background technique [0002] With the scarcity of wood resources, the price of boards made of wood is getting higher and higher, so it is of great significance to develop substitutes for wood boards. Crop straw has a large yield, high cellulose and lignin content, and low price. If it replaces wood, it can not only turn waste into treasure, but also reduce environmental pollution caused by straw burning and protect forest resources. However, the processing difficulty of crop panels is far greater than that of wood-based panels. At present, the preparation process of straw boards generally includes: raw material classification, raw material pretreatment, shaving preparation, adding adhesive to mix raw materials, paving, hot pressing, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/00C09J11/04C09J11/06B27N3/02B27N3/00B27N3/10
Inventor 徐振星胡家豪庞静宇韦志毅胡植文杨连威
Owner 东北大学秦皇岛分校
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