CN101439941A - Method for preparing room curing aluminum orthophosphate binder - Google Patents
Method for preparing room curing aluminum orthophosphate binder Download PDFInfo
- Publication number
- CN101439941A CN101439941A CNA2008102408950A CN200810240895A CN101439941A CN 101439941 A CN101439941 A CN 101439941A CN A2008102408950 A CNA2008102408950 A CN A2008102408950A CN 200810240895 A CN200810240895 A CN 200810240895A CN 101439941 A CN101439941 A CN 101439941A
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- CN
- China
- Prior art keywords
- aluminum phosphate
- curing
- temperature
- phosphoric acid
- room temperature
- 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.)
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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
- C04B28/34—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 cold phosphate binders
- C04B28/342—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 cold phosphate binders the phosphate binder being present in the starting composition as a mixture of free acid and one or more reactive oxides
-
- 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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/02—Phosphate cements
- C04B12/022—Al-phosphates
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a method for preparing an aluminum phosphate adhesive curing at room temperature. The method comprises preparation of the aluminum phosphate adhesive curing at room temperature and influence of the Al/P mol ratio and the addition of magnesia on the curing speed. During preparation, a heat accumulating type constant-temperature magnetic stirring apparatus is adopted, and the stirring speed is between 15 and 30 revolutions per minute; a thermometer and a heater form a temperature control system; and reaction is performed at a constant temperature of between 110 and 120 DEG C. The aluminum phosphate adhesive comprises the following compositions: aluminum hydroxide, a phosphoric acid and the magnesia, wherein the Al/P mol ratio is maintained to be between 1.6 to 3 and 1.8 to 3; the magnesia is taken as a curing agent; and the addition of the magnesia is controlled to be between 1.1 and 1.6 percent of the total mass of the aluminum hydroxide and the phosphoric acid. The method has the advantages of curing the aluminum phosphate adhesive at a temperature suitable for construction and successfully preparing the aluminum phosphate adhesive curing at the room temperature.
Description
Technical field
The invention belongs to the inorganic bonding agent preparing technical field, a kind of method for preparing room temperature solidified aluminum phosphate wedding agent is provided especially, solved the problem of aluminum phosphate wedding agent self-vulcanizing difficulty.
Background technology
The aluminum phosphate wedding agent is owing to have good temperature resistance energy and adhesive property, and be widely used on the high temperature kiln, be made into the high-temperature plastic gel material with refractory aggregate, also be used as the fire retardant material of fiber, timber etc., in electrical equipment production, be used as matrix material with good dielectric properties etc.The curing of aluminum phosphate wedding agent at present mainly is to finish by adding stiffening agents such as magnesium oxide, Neutral ammonium fluoride, talcum, and wherein the most frequently used is magnesium oxide.But problem is: the acidity of the aluminum phosphate wedding agent of domestic production at present is too big, even add a certain amount of magnesium oxide curing agent, reaction at room temperature is still very slow, is difficult to accelerate curing speed; And after adjusting the acidity of aluminum phosphate wedding agent,, can cause this wedding agent to form the gelling material of how empty pine again if the curing dose that adds is bigger than normal, be unfavorable for construction.Therefore, in order to prepare a kind of aluminum phosphate wedding agent of self-vulcanizing, must adjust aluminium hydroxide and the mol ratio of phosphoric acid and the add-on of magnesium oxide curing agent.
Summary of the invention
The objective of the invention is to: a kind of method for preparing room temperature solidified aluminum phosphate wedding agent is provided, solves the aluminum phosphate wedding agent and at room temperature solidify difficult problem.In order to address this problem, the present invention adopts following method and technology, successfully prepares the aluminum phosphate wedding agent of self-vulcanizing, and experimental result is seen shown in the example 1-3.
The invention provides a kind of method for preparing room temperature solidified aluminum phosphate wedding agent, it is characterized in that: is 40%～45% with phosphoric acid and water mixed diluting to mass percent concentration, makes reactor temperature be elevated to 110～120 ℃, and keeps constant temperature; Add aluminium hydroxide then, the Al/P mol ratio remains on 1.6:3～1.8:3; After treating that aluminium hydroxide dissolves fully, add magnesium oxide, magnesium oxide is controlled at 1.1～1.6% of aluminium hydroxide and phosphoric acid quality summation as the solidifying agent add-on; Stirring velocity is controlled at 15～30 rev/mins, and the reaction times was controlled between 55～60 minutes.
The effect of magnetic stirring apparatus is to guarantee that reactant fully reacts, and makes strength of solution even.The present invention adopts the method that increases the Al/P mol ratio to reduce the acidity of aluminum phosphate wedding agent, has obtained the aluminum phosphate wedding agent of self-vulcanizing.
The invention has the advantages that: technology is simple, has solved the aluminum phosphate wedding agent and has at room temperature solidified difficult problem, successfully prepares the aluminum phosphate wedding agent of self-vulcanizing.
Embodiment
According to the proportion speed raw materials weighing, be 40%～45% with the water mixed diluting to concentration with phosphoric acid (85%), regulate well heater and make reactor temperature be elevated to 110～120 ℃, and keep constant temperature; Add aluminium hydroxide then, treat that aluminium hydroxide dissolves fully after, add magnesium oxide.Stirring velocity is controlled at 15～30 rev/mins.The purpose that stirs is to guarantee that each material fully reacts, and makes strength of solution even, guarantees the stable performance of wedding agent.Reaction times was controlled at 55～60 minutes.At last the aluminum phosphate wedding agent for preparing is coated in slide surface uniformly, measures set time.
All raw materials all adopt commercially available analytical pure, and wherein commercially available phosphoric acid concentration is 85%.The effect of magnetic stirring apparatus is to guarantee that reactant fully reacts, and makes strength of solution even.The moiety of the aluminum phosphate wedding agent of self-vulcanizing sees Table 1.
The aluminum phosphate wedding agent moiety of table 1 self-vulcanizing
| Moiety | Content (g) |
| Aluminium hydroxide | 10 |
| Phosphoric acid (40～45%) | 44-50 |
| Magnesium oxide | 0.33～0.47 |
Example 1: concrete implementation condition is as shown in table 2.
Concrete implementation condition of table 2 and result
| Project | Implementation condition and effect |
| The moiety proportioning | Al/P mol ratio=1.6:3 |
| Moiety content | Aluminium hydroxide: 10g, phosphoric acid (40%): 50g, magnesium oxide: 0.47g |
| Processing parameter | Temperature: 110 ℃, magnetic agitation speed: 15 rev/mins, the time: 58 minutes |
| Effect | Room temperature storage period: 2.5h, curing situation: completely solidified; |
Example 2: concrete implementation condition is as shown in table 3.
Concrete implementation condition of table 3 and result
| Project | Implementation condition and effect |
| The moiety proportioning | Al/P mol ratio=1.7:3 |
| Moiety content | Aluminium hydroxide: 10g, phosphoric acid (40%): 47g, magnesium oxide: 0.40g |
| Processing parameter | Temperature: 110 ℃, magnetic agitation speed: 30 rev/mins, the time: 55 minutes |
| Effect | Room temperature storage period: 2h, curing situation: completely solidified; |
Example 3: concrete implementation condition is as shown in table 4.
Concrete implementation condition of table 4 and result
| Project | Implementation condition and solidification effect |
| The moiety proportioning | Al/P mol ratio=1.8:3 |
| Moiety content | Aluminium hydroxide: 10g, phosphoric acid (45%): 44g, magnesium oxide: 0.33g |
| Processing parameter | Temperature: 120 ℃, magnetic agitation speed: 20 rev/mins, the time: 60 minutes |
| Effect | Room temperature storage period: 1.8h; Curing situation: completely solidified; This explanation is after aluminum phosphate wedding agent acidity reduces, and adding a spot of magnesium oxide is ambient temperature curable |
For outstanding advantage of the present invention, list two comparison example especially, its concrete implementation condition is as follows: Comparative Examples 1: concrete implementation condition is as shown in table 5.
Concrete implementation condition of table 5 and result
| Project | Implementation condition and solidification effect |
| The moiety proportioning | Al/P mol ratio=1:3 |
| Moiety content | Aluminium hydroxide: 10g, phosphoric acid (40%): 80g, magnesium oxide: 0.6g |
| Processing parameter | Temperature: 120 ℃, magnetic agitation speed: 15 rev/mins, the time: 60 minutes |
| Effect | Room temperature storage period: 50h; Curing situation: uncured; Description taken in conjunction agent acidity is excessive, is difficult to solidify |
Comparative Examples 2: concrete implementation condition is as shown in table 6.
Concrete implementation condition of table 6 and result
| Project | Implementation condition and effect |
| The moiety proportioning | Al/P mol ratio=1.9:3 |
| The moiety quality | Aluminium hydroxide: 10g, phosphoric acid (40%): 42g, magnesium oxide: 1.5g |
| Processing parameter | Temperature: 110 ℃, magnetic agitation speed: 15 rev/mins, the time: 55 minutes |
| Effect | Room temperature storage period: 10 minutes, curing situation: completely solidified; Content of magnesia is too much, becomes the gel of porosity and looseness behind the fast setting, is unfavorable for construction. |
Claims (1)
1. method for preparing room temperature solidified aluminum phosphate wedding agent is characterized in that:
Is 40%～45% with phosphoric acid and water mixed diluting to mass percent concentration, makes reactor temperature be elevated to 110～120 ℃, and keeps constant temperature; Add aluminium hydroxide then, the Al/P mol ratio remains on 1.6:3～1.8:3; After treating that aluminium hydroxide dissolves fully, add magnesium oxide, magnesium oxide is controlled at 1.1～1.6% of aluminium hydroxide and phosphoric acid quality summation as the solidifying agent add-on; Stirring velocity is controlled at 15～30 rev/mins, and the reaction times is between 55 minutes to 60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102408950A CN101439941A (en) | 2008-12-26 | 2008-12-26 | Method for preparing room curing aluminum orthophosphate binder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102408950A CN101439941A (en) | 2008-12-26 | 2008-12-26 | Method for preparing room curing aluminum orthophosphate binder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101439941A true CN101439941A (en) | 2009-05-27 |
Family
ID=40724575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102408950A Pending CN101439941A (en) | 2008-12-26 | 2008-12-26 | Method for preparing room curing aluminum orthophosphate binder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101439941A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570668A (en) * | 2018-05-22 | 2018-09-25 | 江苏昊科汽车空调有限公司 | High heat insulation and wear resistance composite membrane of vehicle-mounted air conditioner compressor vortex disk and preparation method thereof |
| CN108716466A (en) * | 2018-05-24 | 2018-10-30 | 江苏昊科汽车空调有限公司 | The air conditioning compressor blade of heat insulation and wear resistance |
-
2008
- 2008-12-26 CN CNA2008102408950A patent/CN101439941A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108570668A (en) * | 2018-05-22 | 2018-09-25 | 江苏昊科汽车空调有限公司 | High heat insulation and wear resistance composite membrane of vehicle-mounted air conditioner compressor vortex disk and preparation method thereof |
| CN108716466A (en) * | 2018-05-24 | 2018-10-30 | 江苏昊科汽车空调有限公司 | The air conditioning compressor blade of heat insulation and wear resistance |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090527 |