CN105439492A - Preparation method of magnesium oxychloride cement modifier - Google Patents
Preparation method of magnesium oxychloride cement modifier Download PDFInfo
- Publication number
- CN105439492A CN105439492A CN201510937026.3A CN201510937026A CN105439492A CN 105439492 A CN105439492 A CN 105439492A CN 201510937026 A CN201510937026 A CN 201510937026A CN 105439492 A CN105439492 A CN 105439492A
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- CN
- China
- Prior art keywords
- parts
- oxychloride cement
- preparation
- modifier
- magnesium oxychloride
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Abstract
The invention discloses a preparation method of a magnesium oxychloride cement modifier. The modifier greatly increases the waterproof performance of magnesium oxychloride cement. The preparation method comprises the following steps: adding an organosilicone compound to a raw material urea-formaldehyde resin, stirring above materials until uniformity, discharging the obtained mixture, drying the mixture, and crushing the mixture; and adding other components according to a certain ratio, mixing above materials until uniformity, and grinding the obtained mixture in a ball mill to obtain the composite modifier. The modifier comprises, by weight, 20-30 parts of the urea-formaldehyde resin, 10-15 parts of the organosilicone compound, 10-15 parts of phosphate and 40-60 parts of fly ash. The modifier has the advantages of simple preparation process and good modification effect, and products made by using the modifier can be used in wet environment, and have no moisture absorption or warping phenomena, so the waterproof property and the long-term use performances of magnesium oxychloride cement are greatly improved.
Description
Technical field
The invention belongs to field of fine chemical, the preparation method of particularly a kind of Modifying Magnesium Oxychloride Cement agent.
Background technology
Magnesia oxychloride cement, also known as Sorel (Sorel) cement or magnesia cement, is that Sorel was in invention in 1867.Different from other cement, this cement is a kind of MgO-MgCl
2-H
2the magnesium gelatinous material of O system composition, its main component is basic magnesium chloride, can use formula M g
x(OH) ClnH
2o represents.Magnesia oxychloride cement has a series of significant advantage:
(1) fast solidifying and there is good physical strength.The ultimate compression strength of 50 ~ 80MPa is very common, can reach more than 200MPa by adding the most high compressive strength of properties-correcting agent;
(2) weakly alkaline and low-corrosiveness.The pH value of magnesia oxychloride cement slurry filtrate is between 8,5 ~ 9,5, more much lower than the basicity of silicate cement, and general only have corrosive nature to metal;
(3) cohesiveness is good.Very strong cohesive force is had with some organic or inorganic aggregates such as wood sawdust, wood powder, mineral dust and sandstone etc.;
(4) wear resistance is good.Be better than aluminosulfate cement, luminite cement and silicate cement, it is 3 times of ordinary Portland cement wear resistance to have document to show;
(5) flame retardant resistance is excellent.MgO, MgCl
2be all non-flammable, and in goods hydrate, mass crystallization water can stop and light;
(6) anti-bittern ability is strong.Magnesia oxychloride cement can be made to resist the bittern of various concentration by adding properties-correcting agent, therefore, it can be used as light wall material and dalle, water-proof plugging material, fire protection coating material, or directly make fire-retardant material, the tackiness agent etc. of the earth material of building construction or industrial premises and sawdust-board and glued board.
The disadvantage of magnesia oxychloride cement is poor water resistance, and goods working strength in wet environment can obviously decline, and easily returns halogen, and the distortion of wing song, limits its use range.
Summary of the invention
In order to overcome the shortcoming of the poor water resistance that magnesia oxychloride cement in use exists, the invention provides a kind of preparation method of Modifying Magnesium Oxychloride Cement agent.
The object of the invention is to be reached by following measures: the preparation method that a kind of Modifying Magnesium Oxychloride Cement agent is provided.Be raw material with urea-formaldehyde resin, add silicoorganic compound, discharging after stirring, dry, pulverize.According to certain proportioning, add other composition, after mixing, ball mill grinds, obtain composite modifier.
Further, described properties-correcting agent is made up of the raw material of following weight parts: urea-formaldehyde resin 20 ~ 30 parts, silicoorganic compound 10 ~ 15 parts, phosphoric acid salt 10 ~ 15 parts, 40 ~ 60 parts, flyash.
Further, described silanes is organo-siloxane, and its chemical general formula is R
nsi (OR)
4-n, use inorganic phosphate for tricalcium phosphate.
Further, the volume of properties-correcting agent in magnesia oxychloride cement is 6% ~ 10%.
Beneficial effect: preparation technology of the present invention is simple, and modified effect is good, and goods use in wet environment, halogenation, not wing are bent.Through practice test, use the modified goods of this compound additive in water, soak resistance to water coefficient after 6 months and still can reach more than 90%, overcome and eliminate and return halogen, wing song and cracking demixing phenomenon, improve intensity and the wear resistance of magnesium oxychloride cement product, improve the Long-Term Properties of goods.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
In the present embodiment, a kind of preparation method of Modifying Magnesium Oxychloride Cement agent is provided.A kind of preparation method of Modifying Magnesium Oxychloride Cement agent is provided.Be raw material with urea-formaldehyde resin, add silicoorganic compound, discharging after stirring, dry, pulverize.According to certain proportioning, add other composition, after mixing, ball mill grinds, obtain composite modifier.
Properties-correcting agent of the present invention is made up of the raw material of following weight parts: urea-formaldehyde resin 20 ~ 30 parts, silicoorganic compound 10 ~ 15 parts, phosphoric acid salt 10 ~ 15 parts, 40 ~ 60 parts, flyash.
In the present invention use silanes for organo-siloxane, its chemical general formula is R
nsi (OR)
4-n, use inorganic phosphate for tricalcium phosphate.
Embodiment
150g hexamethyl cyclotrisiloxane is joined in the urea-formaldehyde resin of 300g, after stirring, discharging, dry under the condition of 120 DEG C, after using pulverizer to pulverize, add the tricalcium phosphate of 100g and the flyash of 450g wherein, after stirring, use ball mill, material is ground, namely obtains Modifying Magnesium Oxychloride Cement agent.In magnesia oxychloride cement preparation process, add this admixture of 10% wherein, after shaping, use in wet environment through inspection goods, halogenation, not wing are bent, and ultimate compression strength still can remain on more than 95%.
Above content is the further description done the present invention in conjunction with optimal technical scheme, can not assert that the concrete enforcement of invention is only limitted to these explanations.Concerning general technical staff of the technical field of the invention, under the prerequisite not departing from design of the present invention, simple deduction and replacement can also be made, all should be considered as protection scope of the present invention.
Claims (4)
1. a preparation method for Modifying Magnesium Oxychloride Cement agent, is characterized in that, this properties-correcting agent is made up of the raw material of following weight parts: urea-formaldehyde resin 20 ~ 30 parts, silicoorganic compound 10 ~ 15 parts, phosphoric acid salt 10 ~ 15 parts, 40 ~ 60 parts, flyash.
2. the preparation method of a kind of Modifying Magnesium Oxychloride Cement agent according to claim 1, is characterized in that, use silanes for organo-siloxane, its chemical general formula is R
nsi (OR)
4-n, use inorganic phosphate for tricalcium phosphate.
3. the preparation method of a kind of Modifying Magnesium Oxychloride Cement agent according to claim 1, is characterized in that, the preparation method of this properties-correcting agent is: take urea-formaldehyde resin as raw material, add silicoorganic compound, discharging after stirring, and dries, and pulverizes.According to certain proportioning, add other composition, after mixing, ball mill grinds, obtain composite modifier.
4. the preparation method of a kind of Modifying Magnesium Oxychloride Cement agent according to claim 1, is characterized in that, the volume of this properties-correcting agent in magnesia oxychloride cement is 6% ~ 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510937026.3A CN105439492A (en) | 2015-12-15 | 2015-12-15 | Preparation method of magnesium oxychloride cement modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510937026.3A CN105439492A (en) | 2015-12-15 | 2015-12-15 | Preparation method of magnesium oxychloride cement modifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105439492A true CN105439492A (en) | 2016-03-30 |
Family
ID=55550202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510937026.3A Pending CN105439492A (en) | 2015-12-15 | 2015-12-15 | Preparation method of magnesium oxychloride cement modifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078461A (en) * | 2019-03-27 | 2019-08-02 | 浙江卓元建设有限公司 | A kind of water-proof fireproof heat-preserving wall |
-
2015
- 2015-12-15 CN CN201510937026.3A patent/CN105439492A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078461A (en) * | 2019-03-27 | 2019-08-02 | 浙江卓元建设有限公司 | A kind of water-proof fireproof heat-preserving wall |
| CN110078461B (en) * | 2019-03-27 | 2021-10-22 | 浙江卓元建设有限公司 | Waterproof and fireproof heat-insulation wall |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |