Magnesium oxysulfate cementing composite material for prefabricated thermal insulation wallboard and preparation method

A technology of composite materials and magnesium oxysulfide glue, which is applied in the field of development of new building materials, can solve problems such as low strength, warping deformation, and poor water resistance, and achieve the effects of improving strength and water resistance, improving toughness, and reducing production costs

Inactive Publication Date: 2016-11-16
杨红健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defects such as low strength, poor water resistance, warping and deformation of the magnesium oxysulfide plate produced by the ...

Method used

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  • Magnesium oxysulfate cementing composite material for prefabricated thermal insulation wallboard and preparation method
  • Magnesium oxysulfate cementing composite material for prefabricated thermal insulation wallboard and preparation method
  • Magnesium oxysulfate cementing composite material for prefabricated thermal insulation wallboard and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A magnesium oxysulfate cementitious composite material for prefabricated thermal insulation wallboards, including 15 parts of magnesium sulfate heptahydrate, 60 parts of water, 80 parts of lightly burned magnesium oxide, 15 parts of powder filler, 5 parts of fiber filler and composite modifier 2 servings.

[0021] Preparation of a magnesium oxysulfide cementitious composite material for prefabricated thermal insulation wallboard:

[0022] A, be mixed with the magnesium sulfate aqueous solution that specific gravity is 1.25, mix with 80 parts of light-burned magnesia and 15 parts of powder fillers, after stirring for 5 minutes, add 2 parts of composite modifiers and 5 parts of fiber fillers successively, continue to stir for 15 minutes, obtain the described Magnesium oxysulfide cementitious composite material slurry.

[0023] B. Pour the above-mentioned obtained slurry into a mold covered with glass fiber mesh cloth, seal it and place it in a curing room with a relative...

Embodiment 2

[0028] A magnesium oxysulfate cementitious composite material for prefabricated thermal insulation wallboards, including 20 parts of magnesium sulfate heptahydrate, 56 parts of water, 90 parts of lightly burned magnesium oxide, 7 parts of powder filler, 10 parts of fiber filler and composite modifier 3 copies.

[0029] Preparation of a magnesium oxysulfide cementitious composite material for prefabricated thermal insulation wallboard:

[0030] A, be mixed with the magnesium sulfate aqueous solution that specific gravity is 1.24, add 90 parts of light-burned magnesia and 7 parts of powder fillers and mix, after stirring for 5 minutes, add 3 parts of composite modifiers and 10 parts of fiber fillers successively, continue to stir for 25 minutes, obtain the described Magnesium oxysulfide cementitious composite material slurry.

[0031] B. Pour the above-mentioned obtained slurry into a mold covered with glass fiber mesh cloth, seal it and place it in a curing room with a relativ...

Embodiment 3

[0036] According to the formula and preparation method described in Example 2, the addition amount of the composite modifier was changed to prepare a series of magnesium oxysulfide gelled composite materials, and the effect of the added amount of the composite modifier on the performance of the gelled composite material was investigated.

[0037] Table 3 The effect of different composite modifier additions

[0038]

[0039] According to the formula and preparation process described in Example 2, the addition amount of the composite modifier was changed, and the obtained magnesium oxysulfide gel composite materials had a smooth and uniform surface, no problems such as warping, deformation, frost cracking, etc., and all had high mechanical strength, Good water resistance, it can be seen that within the range of addition in the present invention, the magnesium oxysulfide cementitious composite materials prepared by different additions of composite modifiers can meet the require...

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Abstract

The invention discloses a magnesium oxysulfate cementing composite material for a prefabricated thermal insulation wallboard and a preparation method. The magnesium oxysulfate cementing composite material is prepared from, by weight, 10-20 parts of magnesium sulfate heptahydrate, 50-65 parts of water, 80-100 parts of light calcined magnesia, 2-15 parts of powdered filler, 1-10 parts of fibrous filler and 1-5 parts of compound modifier. The preparation method of the composite material comprises the steps that magnesium sulfate heptahydrate is prepared into an aqueous solution, light calcined magnesia and the powdered filler are added, stirring is conducted for 5 min, the compound modifier and the fibrous filler are added, stirring is continuously conducted for 10 min to 30 min, an obtained magnesium oxysulfate cementing material slurry is added into a mold paved with a non-woven cloth and a fiberglass mesh cloth, and curing molding is conducted. The prefabricated thermal insulation wallboard produced through the magnesium oxysulfate cementing composite material has the advantages of being high in strength and good in water resistance, and the problems of scumming, warping deformation and the like are avoided.

Description

technical field [0001] The invention belongs to the field of development of new building materials, and in particular relates to a magnesium oxysulfide gelled composite material used for prefabricated thermal insulation wall boards and a preparation method thereof. Background technique [0002] Magnesium oxysulfate cementitious material, also known as magnesium oxysulfide cement, is the base material of the above-mentioned new cementitious composite material. The gelling material is MgSO 4 , MgO and H 2 O is mixed according to a certain proportion to make MgSO 4 -MgO-H 2 On the basis of the O ternary system, and then fully hydrated to form xMg(OH) 2 ·yMgSO 4 ·zH 2 O as the main component of the gelling material. Compared with magnesium oxychloride cement, magnesium oxysulfide cement uses magnesium sulfate as a blending agent, which fundamentally solves the problems of magnesium oxychloride cement due to the migration of chloride ions to the surface. Shrinkage and har...

Claims

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Application Information

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IPC IPC(8): C04B28/30
CPCC04B28/30C04B2201/50C04B14/304C04B22/142C04B18/08C04B18/146C04B14/14C04B18/24C04B18/26C04B16/0633C04B16/0683C04B16/0691C04B14/42C04B14/386C04B14/383C04B24/06C04B22/08C04B22/16C04B24/003
Inventor 杨红健郭涛何祯辉马秋杨少明
Owner 杨红健
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