Preparation method for high-toughness and wear-resistant cement fiber board

A technology of cement fiberboard and high toughness, which is applied in the field of preparation of high toughness and wear-resistant cement fiberboard, which can solve the problems of insufficient toughness, poor adhesion performance, and easy peeling of cement, etc., to improve mechanical strength and toughness, improve strength and toughness, and improve The effect of bonding

Inactive Publication Date: 2019-05-03
常州通和建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a preparation method of high-toughness and wear-resistant cement fiberboard in view of the lack of mechanical strength and toughness of the current cement fiberboard, and the defects of poor adhesion that cause the cement to fall off easily.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Cement: Portland cement

[0033] Preparation of mixed slurry:

[0034]Put rice straw and rice leaves into a pulverizer at a mass ratio of 5:1 to pulverize and blend to obtain a mixture, put the mixture and hydrochloric acid with a mass fraction of 6% into a beaker at a mass ratio of 1:5, and use a stirrer at 500r / min Mix and stir at a rotating speed of 30 min to prepare a mixed slurry.

[0035] Preparation of shaking mixture:

[0036] Add dropwise sodium hydroxide solution with a mass fraction of 16% to the above beaker to adjust the pH value to 12, place the beaker in a water bath with a water bath temperature of 90°C, boil in water at a constant temperature for 2 hours to obtain a reaction slurry, and filter the reaction slurry to obtain Filter residue, clean filter residue 3 times with absolute ethanol and distilled water successively; The acetic acid solution that above-mentioned filter residue and mass fraction are 11% is put into beaker by mass ratio 1:10, and b...

Embodiment 2

[0044] Cement: aluminate cement

[0045] Preparation of mixed slurry:

[0046] Put rice straw and rice leaves into a pulverizer at a mass ratio of 5:1 to pulverize and blend to obtain a mixture, put the mixture and 8% hydrochloric acid into a beaker at a mass ratio of 1:5, and use a stirrer at 550r / min Mix and stir at a certain speed for 35 minutes to prepare a mixed slurry.

[0047] Preparation of shaking mixture:

[0048] Add dropwise sodium hydroxide solution with a mass fraction of 18% to the above beaker to adjust the pH value to 12, place the beaker in a water bath with a water bath temperature of 95°C, boil in water at a constant temperature for 2 hours to obtain a reaction slurry, and filter the reaction slurry to obtain Filter residue, clean filter residue 4 times with absolute ethanol and distilled water successively; The acetic acid solution that above-mentioned filter residue and mass fraction are 13% is dropped in the beaker by mass ratio 1:10, and beaker is pla...

Embodiment 3

[0056] Cement: Iron-aluminate cement

[0057] Preparation of mixed slurry:

[0058] Put rice straw and rice leaves into a pulverizer at a mass ratio of 5:1 to pulverize and blend to obtain a mixture, put the mixture and hydrochloric acid with a mass fraction of 10% into a beaker at a mass ratio of 1:5, and use a stirrer at 600r / min Mix and stir at a speed of 40 min to prepare a mixed slurry.

[0059] Preparation of shaking mixture:

[0060] Add dropwise sodium hydroxide solution with a mass fraction of 20% to the above beaker to adjust the pH value to 13, place the beaker in a water bath with a water bath temperature of 100°C, boil in water at a constant temperature for 3 hours to obtain a reaction slurry, and filter the reaction slurry to obtain Filter residue, clean filter residue 5 times with absolute ethanol and distilled water successively; The acetic acid solution that above-mentioned filter residue and mass fraction are 15% is put into beaker by mass ratio 1:10, and b...

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Abstract

The invention relates to a preparation method for a high-toughness and wear-resistant cement fiber board, belonging to the technical field of preparation of building materials. The preparation methodprovided by the invention has the following steps: subjecting rice straw and rice leaves used as raw materials to a reaction, carrying out filtering so as to obtain filter residue, then soaking the filter residue with acetic acid, carrying out ultrasonic oscillation, adding magnesium chloride so as to prepare a mixed solution, mixing the mixed solution, glucose and rice husks, carrying out fermentation and high-temperature treatment, then mixing a high-temperature treatment product, cement and water, and carrying out hot pressing, drying and discharging so as to obtain the high-toughness and wear-resistant cement fiber board. According to the invention, all organic fiber components in the rice straw and the rice leaves are separated; meanwhile, through introduction of magnesium ions, strength and toughness of plant fiber are improved; fiber components of the rice straw and the rice leaves are partially hydrolyzed to generate a saccharide compound and organic carboxylic acid, so the bonding effect among all components in a cement fiber board is improved; and through high-temperature treatment, the fiber is partially carbonized, so mechanical strength and toughness of the cement fiber board are further improved, and good application prospect is achieved.

Description

technical field [0001] The invention relates to a preparation method of a high-toughness wear-resistant cement fiber board, which belongs to the technical field of building material preparation. Background technique [0002] Fiber cement board, also known as fiber cement board. It is a new type of building material made of silicon and calcareous materials as the main raw materials, adding plant fibers, pulping, extracting, pressurizing, and curing. It has the characteristics of stable size, high strength, moisture-proof and anti-corrosion, non-combustible, earthquake-resistant, long service life, etc. It is a building decoration plate with excellent performance. Therefore, it is widely used in the fields of industrial panels such as internal and external walls, suspended ceilings, curtain wall linings, sound-absorbing barriers, and composite wall panels of various buildings. [0003] Cement fiber boards are divided into chrysotile fiber cement boards and asbestos-free fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B28/04C04B14/38C04B14/30C04B111/20
Inventor 龙国华
Owner 常州通和建筑工程有限公司
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