CN108129044A - A kind of method for improving magnesia oxychloride cement water resistance - Google Patents
A kind of method for improving magnesia oxychloride cement water resistance Download PDFInfo
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- CN108129044A CN108129044A CN201810117320.3A CN201810117320A CN108129044A CN 108129044 A CN108129044 A CN 108129044A CN 201810117320 A CN201810117320 A CN 201810117320A CN 108129044 A CN108129044 A CN 108129044A
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- CN
- China
- Prior art keywords
- oxychloride cement
- magnesia oxychloride
- water resistance
- water
- magnesia
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- 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.)
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Classifications
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- 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
- C04B9/00—Magnesium cements or similar cements
- C04B9/11—Mixtures thereof with other inorganic cementitious materials
-
- 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
- C04B9/00—Magnesium cements or similar cements
- C04B9/02—Magnesium cements containing chlorides, e.g. Sorel cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides it is a kind of improve magnesia oxychloride cement water resistance method, the specific steps are：By weight first waterglass and phosphoric acid are added in mixing water, adding in magnesium chloride after the completion of stirring 2~5min reactions stirs to dissolve, and then adds magnesia mixing into uniform sizing material pouring molding.This method can significantly improve magnesia oxychloride cement water resistance, solve the problems, such as magnesia oxychloride cement poor water resistance, can widen the application range of magnesia oxychloride cement, and this method is simple for process, can reduce the water-fast modified cost of magnesia oxychloride cement of enterprise.
Description
Technical field
The present invention relates to a kind of methods for improving magnesia oxychloride cement water resistance, can improve magnesia oxychloride cement construction material
Water resistance.
Background technology
Magnesia oxychloride cement condensation setting rate is fast, intensity is high, rigidity is big, wear and shock-resistant, low alkali low corrosion etc., therefore chlorine
Oxygen magnesium material product is widely used in packaging, building materials, ornament materials, means of transportation, refractory product etc..But magnesia oxychloride cement
Since its is special into being grouped as, there is also some defects, such as poor water resistance.General magnesium oxychloride cement product impregnates in water
Its strength reduction 70% ~ 80% after 28 days, in a humidity environment easy damp suction surface halide accumulation, product surface there is large water drop etc., these disadvantages
End seriously limits the application range of magnesium cement, and unmodified magnesia oxychloride cement material cannot be used such as in the rainy environment of high humidity
Material etc..Therefore, the shortcomings that researching and developing the magnesia oxychloride cement cementitious material with water resistance, overcoming its essential could fully be sent out
Wave the engineering property of magnesia oxychloride cement.
Invention content
The present invention provides a kind of methods using waterglass and the composite modified magnesia oxychloride cement of phosphoric acid, can be applied to chlorine oxygen
The production and application of magnesium cement constructional material improve the water resistance of material.
A kind of method for improving magnesia oxychloride cement water resistance, the specific steps are：First waterglass and phosphoric acid are added by weight
Enter into mixing water, adding in magnesium chloride after the completion of stirring 2~5min reactions stirs to dissolve, and then adds magnesia mixing
Into uniform sizing material pouring molding.
In the above-mentioned methods, the weight ratio of the waterglass and phosphoric acid is 5~20:5~15.
In the above-mentioned methods, the modulus of water glass is 3~3.6.
In the above-mentioned methods, the phosphoric acid is technical grade.
The positive advantageous effect of the present invention：The present invention passes through control charging order using waterglass, phosphoric acid as main modifying agent
And the reaction time, the extent of reaction of modifying agent is controlled, to generate the active material of newborn transition state, many kinds of substance acts synergistically,
Significantly improve magnesia oxychloride cement water resistance.Reaction time is long or too short, can all reduce the modified effect of modifying agent.This method
Magnesia oxychloride cement hydrated product crystal habit can be changed, formed with petal-shaped and fibrous crystallite, the net for the stabilization being interweaved
Shape structure improves the compactness of hardenite, so as to significantly improve the water resistance of magnesia oxychloride cement.Present method solves chlorine oxygen
It is the problem of magnesium cement poor water resistance, simple for process, the water-fast modified cost of magnesia oxychloride cement of enterprise can be reduced.
Specific embodiment
It elaborates with reference to embodiments to the present invention.The embodiment of the present invention and comparative example test method according to
Mark GB/T1761-1999《Test method for strength of hydraulic cement mortar》It carries out.Phosphoric acid used be technical grade, effective concentration 85%.
Embodiment one
Weigh 12 parts of waterglass（Modulus is 3）, 5 parts of phosphoric acid, be added in 406 parts of mixing waters, 351 parts of chlorine added in after stirring 3min
Change magnesium, stirring make magnesium chloride dissolve after add 1000 parts of magnesia, stir into uniform sizing material, be injected into three gang moulds, for 24 hours after
It demoulds, maintenance was to 7 days under natural conditions.Then, anti-folding, intensity test are carried out after one group of test block is dried；Another group of examination
Block carries out anti-folding, intensity test, and calculate coefficient of softing again after impregnating in water 7 days.
Embodiment two
Weigh 5 parts of waterglass（Modulus is 3.6）, 15 parts of waste phosphoric acids, be added in 406 parts of mixing waters, 351 added in after stirring 5min
Part magnesium chloride, stirring make magnesium chloride add 1000 parts of magnesia after dissolving, stir into uniform sizing material, be injected into three gang moulds,
It demoulds afterwards for 24 hours, maintenance was to 7 days under natural conditions.Anti- folding, intensity test are carried out after one group of test block is dried；Another group of examination
Block carries out anti-folding, intensity test, and calculate coefficient of softing again after impregnating in water 7 days.
Embodiment three
Weigh 20 parts of waterglass（Modulus is 3.3）, 10 parts of phosphoric acid, be added in 406 parts of mixing waters, 351 added in after stirring 2min
Part magnesium chloride, stirring make magnesium chloride add 1000 parts of magnesia after dissolving, stir into uniform sizing material, be injected into three gang moulds,
It demoulds afterwards for 24 hours, maintenance was to 7 days under natural conditions.Anti- folding, intensity test are carried out after one group of test block is dried；Another group of examination
Block carries out anti-folding, intensity test, and calculate coefficient of softing again after impregnating in water 7 days.
1 test result of table
Note：
（1）In table 1, percentage accounts for magnesia oxychloride cement for water-fast modifying agent（The sum of magnesium chloride and magnesia weight）Percentage；
（2）Embodiment one~tri-, the water-fast modifying agent of admixture is waterglass and the reaction mixture of phosphoric acid；
（3）Comparative example one does not add water-fast modifying agent；Comparative example two, three, the water-fast modifying agent of admixture is waterglass；Comparative example
Four, the water-fast modifying agent of admixture is phosphoric acid；Comparative example five, six, the water-fast modifying agent of admixture is silicon ash；Other experimental conditions with
Embodiment two is identical.
Claims (4)
- A kind of 1. method for improving magnesia oxychloride cement water resistance, it is characterised in that specifically comprise the steps of：First will by weight Waterglass and phosphoric acid are added in mixing water, and adding in magnesium chloride after the completion of stirring 2~5min reactions stirs to dissolve, Ran Houzai Magnesia mixing is added in into uniform sizing material.
- 2. according to the method described in claim 1, it is characterized in that：The weight ratio of the waterglass and phosphoric acid is 5~20:5 ~15.
- 3. according to the method described in claim 1, it is characterized in that：The modulus of water glass is 3~3.6.
- 4. according to the method described in claim 1, it is characterized in that：The phosphoric acid is PHOSPHORIC ACID TECH.GRADE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810117320.3A CN108129044A (en) | 2018-02-06 | 2018-02-06 | A kind of method for improving magnesia oxychloride cement water resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810117320.3A CN108129044A (en) | 2018-02-06 | 2018-02-06 | A kind of method for improving magnesia oxychloride cement water resistance |
Publications (1)
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|---|---|
| CN108129044A true CN108129044A (en) | 2018-06-08 |
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|---|---|---|---|
| CN201810117320.3A Pending CN108129044A (en) | 2018-02-06 | 2018-02-06 | A kind of method for improving magnesia oxychloride cement water resistance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116574452A (en) * | 2023-06-20 | 2023-08-11 | 中国林业科学研究院木材工业研究所 | Waterproof magnesium oxychloride inorganic adhesive for plywood and preparation method thereof |
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| US5039454A (en) * | 1990-05-17 | 1991-08-13 | Policastro Peter P | Zinc-containing magnesium oxychloride cements providing fire resistance and an extended pot-life |
| CN101851085A (en) * | 2010-06-21 | 2010-10-06 | 成都科健高分子材料有限公司 | Magnesium-oxy-chloride cement |
| CN102036932A (en) * | 2008-05-20 | 2011-04-27 | 保全研究与技术中心 | Durable magnesium oxychloride cement and process therefor |
| CN102060453A (en) * | 2010-12-14 | 2011-05-18 | 支亮 | Magnesium oxychloride concrete composite powder material and preparation process thereof |
| CN102731040A (en) * | 2012-06-15 | 2012-10-17 | 徐庆旭 | Method for preparing building block brick series products by using waste electrolytic manganese slag |
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| CN104829162A (en) * | 2015-05-29 | 2015-08-12 | 盐城工学院 | Magnesium oxychloride cement modifier and preparation method and application thereof |
| CN104909602A (en) * | 2015-05-29 | 2015-09-16 | 盐城工学院 | Modifier for magnesium oxychloride cement as well as preparation method and applications thereof |
| CN105000818A (en) * | 2015-05-29 | 2015-10-28 | 盐城工学院 | Modifying agent for magnesium oxychloride cement, preparing method thereof and application thereof |
| CN105367036A (en) * | 2015-11-30 | 2016-03-02 | 中国科学院青海盐湖研究所 | Low-temperature magnesium oxychloride cement and preparation method therefor |
| CN107601927A (en) * | 2017-09-30 | 2018-01-19 | 常州大学 | A kind of preparation method of the high water than phosphorous magnesium oxychloride cement for being advantageous to improve early strength |
-
2018
- 2018-02-06 CN CN201810117320.3A patent/CN108129044A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5039454A (en) * | 1990-05-17 | 1991-08-13 | Policastro Peter P | Zinc-containing magnesium oxychloride cements providing fire resistance and an extended pot-life |
| CN102036932A (en) * | 2008-05-20 | 2011-04-27 | 保全研究与技术中心 | Durable magnesium oxychloride cement and process therefor |
| CN101851085A (en) * | 2010-06-21 | 2010-10-06 | 成都科健高分子材料有限公司 | Magnesium-oxy-chloride cement |
| CN102060453A (en) * | 2010-12-14 | 2011-05-18 | 支亮 | Magnesium oxychloride concrete composite powder material and preparation process thereof |
| CN102731040A (en) * | 2012-06-15 | 2012-10-17 | 徐庆旭 | Method for preparing building block brick series products by using waste electrolytic manganese slag |
| CN103553410A (en) * | 2013-11-15 | 2014-02-05 | 晋江安能建材制造有限公司 | Magnesium oxychloride modifying cement and magnesium oxychloride cement |
| CN104829162A (en) * | 2015-05-29 | 2015-08-12 | 盐城工学院 | Magnesium oxychloride cement modifier and preparation method and application thereof |
| CN104909602A (en) * | 2015-05-29 | 2015-09-16 | 盐城工学院 | Modifier for magnesium oxychloride cement as well as preparation method and applications thereof |
| CN105000818A (en) * | 2015-05-29 | 2015-10-28 | 盐城工学院 | Modifying agent for magnesium oxychloride cement, preparing method thereof and application thereof |
| CN105367036A (en) * | 2015-11-30 | 2016-03-02 | 中国科学院青海盐湖研究所 | Low-temperature magnesium oxychloride cement and preparation method therefor |
| CN107601927A (en) * | 2017-09-30 | 2018-01-19 | 常州大学 | A kind of preparation method of the high water than phosphorous magnesium oxychloride cement for being advantageous to improve early strength |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116574452A (en) * | 2023-06-20 | 2023-08-11 | 中国林业科学研究院木材工业研究所 | Waterproof magnesium oxychloride inorganic adhesive for plywood and preparation method thereof |
| CN116574452B (en) * | 2023-06-20 | 2024-01-23 | 中国林业科学研究院木材工业研究所 | Waterproof magnesium oxychloride inorganic adhesive for plywood and preparation method thereof |
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Application publication date: 20180608 |