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Novel additive for producing light-burned magnesia building material capable of replacing magnesium chloride

A technology of building materials and magnesium chloride, applied in the field of new blending agents, can solve the problems of warping deformation, strength reduction, frost return, etc., and achieve the effects of fast curing, good formability and convenient processing

Inactive Publication Date: 2008-09-03
马再男
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the above-mentioned defects, and aims to provide a light-burned magnesium building material for the production of light-burned magnesium building materials in order to solve the problems of halogen return, frost return, moisture absorption, warping deformation, and strength reduction in current light-burned magnesium building materials. A new blending agent that can replace magnesium chloride

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Using the present invention to produce imitation carved fire doors

[0021] Get magnesia content greater than 80%, 22kg of light-burned magnesia with a particle size of 200 meshes, 33kg of novel blending agent that can replace magnesium chloride for producing light-burned magnesia building materials according to the present invention, 8.8kg of broken cotton stalks with a length less than 5mm, and 0.8kg of sawdust.

[0022] Mix light-burned magnesia and the new blending agent used in the production of light-burned magnesia building materials that can replace magnesium chloride according to the present invention, mix and stir for 10 minutes, then add cotton stalks and sawdust and stir for 10 minutes, pour into a mold with patterns on the inner surface and vibrate to form, Leave it at room temperature for 24 hours and then remove the mold for curing. The curing temperature is less than 50°C and no water is allowed. Cut the edge and polish the surface after 4 days, sand the...

Embodiment 2

[0026] Adopt the present invention to produce substitute wood density board

[0027] Take 20kg of light-burned magnesia with a particle size of 200 meshes, 20kg of light-burned magnesia with a magnesium oxide content of more than 80%, 30kg of the new blending agent that can replace magnesium chloride for producing light-burned magnesia building materials, 7.6kg of broken cotton rods with a length less than 5mm, and 1kg of sawdust.

[0028] Mix and stir the light-burned magnesia and the novel blending agent used in the production of light-burned magnesia building materials that can replace magnesium chloride according to the present invention for 10 minutes, add the broken cotton rods and stir for 5 minutes, then add sawdust and stir for 5 minutes, pour into the funnel and pass through double Roll extrusion and spread on the template, release the mold after curing for 12 hours, sand with a sander after curing at room temperature for 20 days, and paste decorative paper on both si...

Embodiment 3

[0032] Adopt the present invention to produce fireproof board

[0033] Take magnesia content greater than 80%, 8.25kg of light-burned magnesia with a particle size of 200 meshes, 9.9kg of a novel blending agent that can replace magnesium chloride for the production of light-burned magnesia building materials, 2.5kg of sawdust, appropriate amount of glass mesh cloth, non-woven Appropriate amount of cloth.

[0034] Mix light-burned magnesia and the new blending agent used in the production of light-burned magnesia building materials that can replace magnesium chloride according to the present invention, mix and stir for 10 minutes, add sawdust and stir for 10 minutes, spread a layer of glass mesh cloth in the mold and pour the stirred material Scrape it with a scraper, then spread a layer of non-woven fabric, remove the mold after curing for 12 hours, lay it flat and naturally cure for 4 days to trim the edges, and then cure for 28 days to make a fireproof board. The size of th...

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Abstract

The invention relates to a novel moderator instead of magnesium chloride for producing light-burned magnesia building materials, which is characterized in that the moderator comprises the following raw materials by weight: 10kg ferrous sulfate, 0.1kg triethanolamine, 27kg magnesium sulfate, 8kg magnesium silicate, 6kg sodium silicate, 2kg aluminium dihydrogen phosphate, 15kg amorphous silicon dioxide, 6kg ammonium sulfate, 4kg bentonite, 7kg starch phosphate, 1kg potassium aluminum sulfate, 0.05kg titanate-NDZ-201 and 260kg water. The invention is a novel moderator instead of the magnesium chloride which is used in the production of the light-burned magnesia building materials and has good stability for a six-month storage without any change and wide use range, and is characterized in being burn-free, non-autoclave and no combustion with good wear resistance, high hardness, large compressive strength, convenient processing, fast curing, easy nailing, easy sawing, bright surface and good formability, and can be used in the construction industry for producing fireproofing boards, fire doors, partition boards, corrugated tiles, ventilation pipelines and, etc.

Description

technical field [0001] The invention relates to a blending agent for producing building materials, in particular to a novel blending agent for producing light-burned magnesium building materials that can replace magnesium chloride. Background technique [0002] Since the invention of magnesium oxychloride cement by the Frenchman Sorrell in 1986, magnesium chloride has been used as a blending agent for lightly burned magnesia to produce building materials. Adding magnesium chloride to light-burned magnesia can not only accelerate the hydration rate of magnesia, but also react chemically with magnesia to generate new hydration substances, speed up the coagulation time, and obtain products with higher strength. Magnesium oxide is an alkaline substance with a molecular formula of MgO. At present, magnesite or dolomite ore is generally calcined and crushed at home and abroad. The main component of magnesite or dolomite ore is magnesium carbonate. When the temperature after calci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B22/14C04B22/16
CPCC04B40/0039C04B2111/28
Inventor 马再男
Owner 马再男
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