CN110540399A - Waterproof gypsum and preparation method thereof - Google Patents
Waterproof gypsum and preparation method thereof Download PDFInfo
- Publication number
- CN110540399A CN110540399A CN201910919684.8A CN201910919684A CN110540399A CN 110540399 A CN110540399 A CN 110540399A CN 201910919684 A CN201910919684 A CN 201910919684A CN 110540399 A CN110540399 A CN 110540399A
- Authority
- CN
- China
- Prior art keywords
- gypsum
- powder
- waterproof
- polydimethylsiloxane
- polyvinyl alcohol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The waterproof gypsum is prepared from gypsum powder, polyvinyl alcohol, glutinous rice flour, dibutyl hydroxy toluene, butyl hydroquinone and polydimethylsiloxane, and the gypsum prepared from the components has high strength, good waterproof performance and oxidation resistance, and is not oxidized, discolored and aged, so that the waterproof gypsum is very suitable for building gypsum materials.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to waterproof gypsum and a preparation method thereof.
Background
The gypsum product is made up by using calcium sulfate hemihydrate as raw material, adding water, converting it into calcium sulfate dihydrate and solidifying it into various products with various shapes. The material is mainly used for building materials and interior decoration materials such as: partition wall, wall brick also are used for furred ceiling and work of art. The gypsum product is much lighter in weight than cement products, has sound and heat insulation and fire resistance, and is one of the main building materials. But the most serious defects are poor water resistance, easy water and moisture absorption, large strength loss after water absorption, frangibility, large deformation after moisture absorption and limitation of the application. Various ways and measures are adopted by various countries to research the water resistance of the gypsum, but the general theory can be summarized into three aspects: on one hand, the surface of the gypsum is coated or brushed with a waterproof material; on the other hand, the ground slag or the pozzolanic material is added into the gypsum to improve the water resistance of the gypsum; the third aspect is that water emulsion type waterproof agent is added into the gypsum to improve the waterproof performance of the gypsum. The second method is that after gypsum and active mixing material are mixed and hydrated, they are reacted mutually to produce hydrated calcium sulphoaluminate and other hydrated products, and although the water-resistant performance is raised, the whiteness of gypsum product is reduced due to the addition of pozzolanic material, and its decorative property is affected, and it is easy to crack in later period.
The invention content is as follows:
In order to overcome the technical defects, the waterproof gypsum is prepared from gypsum powder, polyvinyl alcohol, glutinous rice flour, dibutyl hydroxy toluene, butyl hydroquinone and polydimethylsiloxane.
specifically, the invention provides waterproof gypsum which is prepared from 50-100kg of gypsum powder, 1-5kg of polyvinyl alcohol, 1-5kg of glutinous rice flour, 8-16g of butylated hydroxytoluene, 1-7g of butylhydroquinone and 180g of polydimethylsiloxane.
More specifically, the invention provides waterproof gypsum which is prepared from 60-90kg of gypsum powder, 2-4kg of polyvinyl alcohol, 2-4kg of glutinous rice flour, 10-14g of butylated hydroxytoluene, 2-6g of butylhydroquinone and 120 g of polydimethylsiloxane-.
Claims (6)
1. A waterproof gypsum is characterized in that: is prepared from gypsum powder, polyvinyl alcohol, glutinous rice flour, dibutyl hydroxy toluene, butyl hydroquinone and polydimethylsiloxane.
2. The waterproof gypsum according to claim 1, wherein: is prepared from 50-100kg of gypsum powder, 1-5kg of polyvinyl alcohol, 1-5kg of glutinous rice flour, 8-16g of butylated hydroxytoluene, 1-7g of butylhydroquinone and 180g of polydimethylsiloxane.
3. The water-resistant gypsum according to claim 1 or 2, characterized in that: is prepared from 60-90kg of gypsum powder, 2-4kg of polyvinyl alcohol, 2-4kg of glutinous rice flour, 10-14g of butylated hydroxytoluene, 2-6g of butylhydroquinone and 160g of polydimethylsiloxane 120-.
4. The water-resistant gypsum according to claim 1 or 2, characterized in that: is prepared from 75kg of gypsum powder, 3kg of polyvinyl alcohol, 3kg of glutinous rice flour, 12g of dibutyl hydroxy toluene, 4g of butyl hydroquinone and 140g of polydimethylsiloxane.
5. A preparation method of waterproof gypsum is characterized by comprising the following steps: the method comprises the following steps: mixing Gypsum Fibrosum powder and Oryza Glutinosa powder, adding water, stirring to obtain emulsion, stirring at 60-70 deg.C for 20-30min, adding polyvinyl alcohol, dibutyl hydroxy toluene, butyl hydroquinone, and polydimethylsiloxane, stirring, keeping temperature at 70-80 deg.C for 10-16min, pouring into Gypsum grinding tool, vibrating, compacting, and drying to obtain waterproof Gypsum Fibrosum.
6. The method for producing a waterproof gypsum according to claim 5, characterized in that: the method comprises the following steps: mixing Gypsum Fibrosum powder and Oryza Glutinosa powder, adding water, stirring to obtain emulsion, stirring at 65 deg.C for 25min, adding polyvinyl alcohol, dibutyl hydroxy toluene, butyl hydroquinone, and polydimethylsiloxane, stirring, keeping at 75 deg.C for 13min, pouring into Gypsum Fibrosum grinding tool, vibrating, compacting, and drying to obtain waterproof Gypsum Fibrosum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910919684.8A CN110540399A (en) | 2019-09-26 | 2019-09-26 | Waterproof gypsum and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910919684.8A CN110540399A (en) | 2019-09-26 | 2019-09-26 | Waterproof gypsum and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110540399A true CN110540399A (en) | 2019-12-06 |
Family
ID=68714572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910919684.8A Pending CN110540399A (en) | 2019-09-26 | 2019-09-26 | Waterproof gypsum and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110540399A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631835A (en) * | 2003-12-23 | 2005-06-29 | 王以社 | Production formula of high-strength waterproof gypsum product |
| CN101012119A (en) * | 2007-01-11 | 2007-08-08 | 云南天之豪装饰材料有限公司 | Light gypsum suspended ceiling |
| CN102060492A (en) * | 2009-11-14 | 2011-05-18 | 孔敏 | High-strength waterproof gypsum product |
| CN106630881A (en) * | 2015-10-30 | 2017-05-10 | 徐勤凤 | Gypsum |
| CN108658517A (en) * | 2018-06-01 | 2018-10-16 | 佛山市海烨精密塑料制管有限公司 | A kind of waterproof cold resistant powder of lacquer putty for use on and preparation method thereof |
-
2019
- 2019-09-26 CN CN201910919684.8A patent/CN110540399A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631835A (en) * | 2003-12-23 | 2005-06-29 | 王以社 | Production formula of high-strength waterproof gypsum product |
| CN101012119A (en) * | 2007-01-11 | 2007-08-08 | 云南天之豪装饰材料有限公司 | Light gypsum suspended ceiling |
| CN102060492A (en) * | 2009-11-14 | 2011-05-18 | 孔敏 | High-strength waterproof gypsum product |
| CN106630881A (en) * | 2015-10-30 | 2017-05-10 | 徐勤凤 | Gypsum |
| CN108658517A (en) * | 2018-06-01 | 2018-10-16 | 佛山市海烨精密塑料制管有限公司 | A kind of waterproof cold resistant powder of lacquer putty for use on and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191206 |