Magnesian sulphoaluminate cement, and method of preparing sheet material with the cement and fiber-reinforced composite material

A technology of magnesium sulfoaluminate and cement, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc. It can solve molding difficulties, poor mechanical properties of magnesium oxysulfate cement, and large amount of pozzolanic materials, etc. problems, to achieve the effect of improving resistance to sulfate erosion, benefiting ecological balance, and solving structural contradictions

Inactive Publication Date: 2015-12-09
谌萌 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Magnesium aluminum silicate cement (patent number: ZL02133685.7) successfully developed by Wen Yuquan and Chen Meng of Chengdu Xinmu Ventilation and Purification Co., Ltd. in 2002, and magnesium powder successfully developed by Xu Jun of Hubei Jingmen Kaixin Environmental Protection Technology Co., Ltd. in 2012 Coal ash clinker-free cement (Patent No.: ZL201210174414.7) overcomes the disadvantages of magnesium oxychloride cement absorbing moisture and returning halogen, corroding metal, solves the problem of poor mechanical properties of magnesium oxysulfide cement, and avoids the reaction of magnesium oxychloride cement The defect of faster speed, but due to the large amount of pozzolanic material (fly ash is an artificial pozzolanic material), it is difficult to meet the workability requirements of the mixture when producing large-volume plant fiber products, so the product molding Difficult, large fluctuations in quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: In parts by weight, magnesium sulfate ( 7 ) 50-65 parts, aluminum sulfate ( 18 ) 2-5 parts, phosphoric acid and phosphate 1.0-1.5 parts, and water 45-70 parts to prepare a solution, and stir with 35-50 parts of calcined bauxite and 100 parts of light-burned magnesia to form a pure slurry. Use clean pulp to make 40mm×40mm×160mm test block, flexural strength ≧18MPa, compressive strength ≧95MPa, softening coefficient>1 after soaking in water for 48 hours.

[0024] The method for preparing a plate with magnesia sulfoaluminate cement and fiber reinforced composite material of the present invention:

[0025] In parts by weight, magnesium sulfate ( 7 ) 50-65 parts, aluminum sulfate ( 18 ) 2-5 parts, phosphoric acid and phosphate 1.0-1.5 parts, and water 45-70 parts to prepare a solution, and stir with 35-50 parts of calcined bauxite and 100 parts of light-burned magnesia to form a pure slurry. After the clean pulp is prepared, it is reinforced...

Embodiment 2

[0026] Example 2: Preparation of non-combustible inorganic composite board

[0027] In parts by weight, 50 parts of magnesium sulfate, 2 parts of aluminum sulfate, 1.0 part of phosphoric acid and 70 parts of water are prepared into a solution, and then 35 parts of calcined bauxite and 100 parts of lightly calcined magnesia are added and stirred to form a clean slurry. After the clean pulp is made, add 60 parts of chopped plant fiber (wood chips and straw scraps), stir it into a slurry, and roll it with the upper and lower layers of glass fiber mesh cloth to form a glass magnesium plate. All performance indicators meet the requirements stipulated in GA160-2004 "Non-combustible Inorganic Composite Panel" and JC688-2006 "Glass Magnesium Flat Panel".

Embodiment 3

[0028] Example 3: Preparation of glass magnesium wind duct board

[0029]In parts by weight, 55 parts of magnesium sulfate, 2 parts of aluminum sulfate, 1.2 parts of sodium hexametaphosphate, and 45 parts of water were formulated into a solution, and then 50 parts of calcined bauxite and 100 parts of light-burned magnesia were added and stirred into a clean slurry . The upper and lower layers of glass fiber twisted mesh cloth and the molded polystyrene foam board for heat insulation are roll-formed into a sandwich board--insulation air duct board. After natural maintenance, all performance indicators can reach JC / Requirements stipulated in T646-2006 "Glass Magnesium Air Duct".

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Abstract

The invention relates to magnesian sulphoaluminate cement, and a method of preparing a sheet material with the cement and a fiber-reinforced composite material, and belongs to the technical field of magnesian cement formulas and products. The magnesian sulphoaluminate cement mainly includes the following raw materials: light-burned magnesium oxide, magnesium sulfate, aluminum sulfate, calcined bauxite and water. The invention, compared with the prior art, has following beneficial effects: 1) the cement is high in strength; 2) the cement is low in alkali degree; 3) low-grade bauxite can be utilized so that a novel approach is developed for effective utilization and reasonable allocation of resources; 4) the cement is long in service life; and 5) the magnesian sulphoaluminate cement can be composited with plant fiber directly.

Description

technical field [0001] The invention relates to a magnesia sulphoaluminate cement and a method for preparing a plate with a fiber reinforced composite material, and belongs to the technical field of magnesia cement formula and products. Background technique [0002] The existing magnesia cement mainly includes the magnesium oxychloride cement invented by the Frenchman S.Sorel in 1866 (the US patent 53092 "Improved composition to beusedasacementandasaplasticmaterialformoldingvariousarticles, which is used as an improved component of cement and model materials", which was applied for and granted by the Frenchman S. Sorel in 1870). Magnesium oxysulfate cement invented by Sorel (applied and granted US Patent 100945 "Improvement in the manufacture of artificial stone, improved manufacturing method of artificial stone") and magnesium phosphate cement developed by Brookhaven National Laboratory and Argonne National Laboratory in the United States in 1939. Magnesium oxychloride ceme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B9/04C04B28/30C04B16/06C04B18/24
CPCY02W30/91
Inventor 谌萌席凯原齐俊杰谌震武
Owner 谌萌
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