Production method of insulating brick containing plant straws

A technology for thermal insulation bricks and straws, which is applied in the field of thermal insulation bricks, can solve the problems of low fire resistance of auxiliary materials, unenvironmental binders, etc., and achieves good seismic effect, convenient and fast construction, and low density.

Active Publication Date: 2014-01-29
李伟
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application documents whose application numbers are 200710144690.8 and 201010511378.x disclose the preparation process of straw insulation bricks and the preparation metho

Method used

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  • Production method of insulating brick containing plant straws

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[0019] Example 1

[0020] Plant straw-containing thermal insulation bricks composed of raw materials in the following parts by weight ratio:

[0021] 70 parts of plant straw, 20 parts of magnesium hydroxide, 10 parts of isocyanate,

[0022] Preparation method: pulverize plant straws with a moisture content of 15% by weight into a fiber length of 5-10mm, and dry them until the moisture content is 8% by weight. Weigh the plant straws according to the weight Magnesium hydroxide and binder isocyanate are added to the said parts by weight, stirred and compounded, and then pre-compressed. The pre-compression pressure is 500 tons, and then compression molding is performed. The molding pressure is 1.2 kilotons, and high-frequency electromagnetic induction is adopted. Method, heating to 110°C, hot pressing for 4 to 5 minutes.

Example Embodiment

[0023] Example 2

[0024] Plant straw-containing thermal insulation bricks composed of raw materials in the following parts by weight ratio:

[0025] 80 parts of plant straw, 15 parts of magnesium hydroxide, 5 parts of isocyanate,

[0026] Preparation method: using high-frequency electromagnetic induction method, heating to 110°C, hot pressing for 4 to 5 minutes, and other methods and steps are the same as in Example 1.

[0027] The preparation method is the same as in Example 1.

[0028] Table: Raw material components and performance indicators of the examples

[0029]

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Abstract

The invention relates to a preparation method of an insulating brick containing plant straws. The preparation method is characterized in that the insulating brick is produced from the raw materials in parts by weight: 70-80 parts of the plant straws, 13-25 parts of magnesium hydroxide and 5-10 parts of isocyanate and comprises the steps: crushing the plant straws to obtain crushed plant straws with the fiber length of 5-10mm, drying the crushed plant straws until the moisture content is 8 percent according to the weight percentage, weighing the plant straws according to the parts by weight, adding the magnesium hydroxide and the isocyanate as a binder according to the parts by weight, carrying out mixing and burdening, then carrying out prepressing with the precompression of 500 tons, then carrying out compression molding with the die pressure of 1.2 kilotons, heating to 110 DEG C by virtue of a high-frequency electromagnetic induction method, and carrying out hot pressing for 3-6 minutes to form the insulating brick. According to the production method disclosed by the invention, with the plant straws as main raw materials, the produced insulating brick has a good fireproof performance without needing secondary insulation; in addition, the insulating brick is rapid in construction, has a favorable anti-seismic effect and has the shock strength according with the stipulations of a national standard in wall materials.

Description

technical field [0001] The invention relates to the technical field of thermal insulation bricks in building materials, in particular to a preparation method of thermal insulation bricks containing plant stalks. Background technique [0002] Insulation bricks in the existing building materials are mostly made of polystyrene-based polystyrene boards or mixed with fly ash, perlite, etc. to prepare insulation bricks. Polystyrene panels can only be used for external wall insulation, not for masonry main walls, and polystyrene is not flame retardant, so its scope of use is limited. There are many written materials about insulating bricks prepared by mixing fly ash, perlite, etc. For example, in the technical scheme disclosed in the invention patent application 200810000556.5 "self-insulating materials and insulating bricks", the weight ratio of self-insulating materials is: pulverized coal Ash: 32-61, Perlite: 14-31, Cement: 18-31, Additive: 5-7. More preferably, the weight...

Claims

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Application Information

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IPC IPC(8): C04B26/10C04B18/24
CPCY02W30/91
Inventor 李伟
Owner 李伟
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