CN105060764A - Magnesium oxysulfate gel composite modifier and preparation method thereof - Google Patents
Magnesium oxysulfate gel composite modifier and preparation method thereof Download PDFInfo
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- CN105060764A CN105060764A CN201510455653.3A CN201510455653A CN105060764A CN 105060764 A CN105060764 A CN 105060764A CN 201510455653 A CN201510455653 A CN 201510455653A CN 105060764 A CN105060764 A CN 105060764A
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- composite modifier
- gelling material
- magnesium oxysulfide
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- oxysulfide gelling
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Abstract
The invention discloses a magnesium oxysulfate gel composite modifier and a preparation method thereof, and belongs to the field of composite modifier production. The composite modifier is prepared by evenly mixing potassium dihydrogen phosphate, boric acid, citrate, sodium gluconate, and carboxymethyl cellulose ether. Compared with the prior art, the composite modifier can prolong the setting time of gel material, is capable of improving the denseness state of slurry, reduces the capillary pores generated during the hydration reaction process, and improves the physical performance.
Description
Technical field
The invention belongs to magnesium oxysulfide gelling material field, particularly relate to a kind of magnesium oxysulfide gelling material composite modifier and preparation method thereof.
Background technology
Magnesium gelatinous material take magnesium oxide as the air hardening cementitious materials of main component, be added to the water by magnesium oxide and can produce magnesium hydroxide, slurry is setting and harden gradually, and after sclerosis, intensity is lower, with magnesium chloride, magnesium sulfate, the magnesium gelatinous material of the saline solution modulation such as phosphoric acid salt has early strong, and time of coagulation is fast, light weight, fire-resistant, the advantages such as wear and shock-resistant are a kind of environmental protection building materials.
At present, the main application of magnesium gelatinous material is magnesite binding material, but itself poor water resistance, and easy buckling deformation, the easy moisture absorption, returns halogen and returns white, very easily the shortcoming such as corrosion reinforcing bar, and therefore its extensive popularization and application is still restricted.
Magnesium oxysulfide concrete gelling material is a kind of ternary system gelling material be made up of MgOMgSO4H2O, and the starting material such as it mainly contains light calcined magnesia, magnesium sulfate heptahydrate reaction generates.Not only have chlorine oxygen magnesium, the sclerosis of magnesium phosphate cement is fast, and intensity is high, and fire prevention, light weight, the advantages such as wear and shock-resistant, it also overcomes damp suction surface halide accumulation simultaneously, poor water resistance, the shortcoming of other two kinds of gelling material such as corrosion reinforcing bar.But in the environment of temperature more than 30 DEG C, magnesium oxysulfide gelling material slip setting and harden is too fast, is unfavorable for forming operation, limits the range of application of magnesium oxysulfide gelling material.
Properties-correcting agent, generally as the auxiliary addition agent of gelling material, is mainly used to improve the various performance of gelling material.Such as retardant effectively can reduce gelling material hydration reaction speed, improves the operating performance of gelling material.In prior art, gelling material retardant main component is polyol, hydroxycarboxylate and derivative thereof, high sugared sulfonated lignin, zinc chloride or borate, but its effect not obvious.Water-retaining admixture can improve the slip state of gelling material, meets the requirement of production and construction, can keep the moisture of skin layer simultaneously, make gelling material aquation more complete, reduce the generation of pore, strengthen the performance of gelling material, and also have retarding effect.In existing technology, water-retaining admixture mainly contains ether of cellulose, starch ethers and wilkinite etc., but its effect in magnesium oxysulfide concrete is also bad.
Prior art is as a kind of magnesium oxysulfide gelling material retardant of researchs (publication number is CN103979817A) such as Wang Zifu, and its proportioning raw materials is: Paris white 10 parts, boron oxide 30-40 part, zinc phosphate 50-60 part.
But there are two shortcomings in prior art: 1. this technical scheme just hinders Mg2+ to participate in reaction simply by the dissolving-covering of retardant, and slow setting Method compare is single.2. retardant is to improving magnesium oxysulfide concrete crystalline structure, and the effectiveness comparison improving over-all properties is little.
Summary of the invention
Technical assignment of the present invention is mainly for above-mentioned the deficiencies in the prior art, and namely the time of coagulation of prior art is too short, water-keeping thickening poor effect, then the present invention is exactly the time of coagulation that will extend gelling material.Improve the consistency state of slurry simultaneously, reduce the pore that hydration reaction produces, improve physicals.Further technical assignment of the present invention is to provide the preparation method of above-mentioned composite modifier.
A kind of magnesium oxysulfide gelling material composite modifier, this composite modifier is made up of the raw material of following weight proportion:
Potassium primary phosphate 1-10 part
Boric acid 50-70 part
Citrate trianion 15-30 part
Sunmorl N 60S 5-20 part
TYLOSE 30000 1-10 part.
As preferably, the weight proportion of each raw material of described composite modifier is
Potassium primary phosphate 1-8 part
Boric acid 55-65 part
Citrate trianion 18-30 part
Sunmorl N 60S 10-20 part
TYLOSE 30000 1-8 part.
As preferably, described Citrate trianion is one or more in Trisodium Citrate, Tripotassium Citrate, citrate of lime.
As preferably, described potassium primary phosphate is the PHOSPHORIC ACID TECH.GRADE potassium dihydrogen that content is greater than 99%.
As preferably, described boric acid is the technical grade that content is greater than 99%.
As preferably, described Citrate trianion is the technical grade Trisodium Citrate that content is greater than 99%.
As preferably, described Sunmorl N 60S is the technical grade that content is greater than 99%.
As preferably, described TYLOSE 30000 is a kind of water-soluble cellulose ether analog derivative obtained through chemical modification by natural cellulose.
A preparation method for above-mentioned magnesium oxysulfide gelling material composite modifier, adds stirrer according to proportioning by each raw material, stirs and obtain product.
As preferably, the speed of described stirring is 40-70rpm.
Magnesium oxysulfide gelling material is by light calcined magnesia, the raw materials such as Adlerika are made, wherein potassium primary phosphate, boric acid, Trisodium Citrate and Sunmorl N 60S are as the retardant of magnesium oxysulfide gelling material, can dissolve in water and be ionized into ion, these ions can be adsorbed on mgo surface, play delayed coagulation, also can participate in hydration reaction simultaneously and generate new gum material, this gum material has higher physical and mechanical property compared to magnesium oxysulfide gelling material, lower coefficient of thermal expansion and not easily flexural deformation, so enhancement can be played to magnesium oxysulfide gelling material.TYLOSE 30000, as the water-holding agent of magnesium oxysulfide gelling material, can keep the free water in thin-layer sizing agent, extends hydration time, plays delayed coagulation.Due to conventional ether of cellulose mix with Adlerika after can produce salting-out phenomenon, lose thickening water retention originally, this TYLOSE 30000 is different from general ether of cellulose due to substitution in side chain thing, and substitution value is high, uniform substituent distribution, therefore vitriolization magnesium solution can not be saltoutd reaction, plays water-keeping thickening effect.
Magnesium oxysulfide concrete composite modifier described in the invention, can make magnesium oxysulfide concrete extend 6-8 hour time of coagulation, and folding strength improves 6-8MPa, and ultimate compression strength improves 20-30MPa.
Embodiment
Carry out clear, complete description to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Example one:
A kind of magnesium oxysulfide gelling material composite modifier, this composite modifier is made up of the raw material of following weight proportion:
Potassium primary phosphate 5 parts
Boric acid 55 parts
Trisodium Citrate 23 parts
Sunmorl N 60S 15 parts
TYLOSE 30000 2 parts
Preparation method: add in stirrer by the starting material of said ratio, stirs evenly after stirring 25min and obtain target product retardant under 50rpm.
Example two:
A kind of magnesium oxysulfide gelling material composite modifier, this composite modifier is made up of the raw material of following weight proportion:
Potassium primary phosphate 3 parts
Boric acid 53 parts
Trisodium Citrate 23 parts
Sunmorl N 60S 19 parts
TYLOSE 30000 2 parts
Preparation method: add in stirrer by the starting material of said ratio, stirs evenly after stirring 25min and obtain target product retardant under 50rpm.
Example three:
A kind of magnesium oxysulfide gelling material composite modifier, this composite modifier is made up of the raw material of following weight proportion:
Potassium primary phosphate 1 part
Boric acid 55 parts
Trisodium Citrate 23 parts
Sunmorl N 60S 20 parts
TYLOSE 30000 1 part
Preparation method: add in stirrer by the starting material of said ratio, stirs evenly after stirring 25min and obtain target product retardant under 50rpm.
By formula light calcined magnesia: Adlerika (1.23g/cm
3): retardant=1200:1000:12 shaping magnesium oxysulfide gelling material test specimen, composite modifier used is respectively by example one, and example two, example three obtains.
Those skilled in the art, at consideration specification sheets and after putting into practice invention disclosed herein, will easily expect other embodiment of the present invention.The application is intended to contain any modification of the present invention, purposes or adaptations, and these modification, purposes or adaptations are followed general principle of the present invention and comprised the undocumented common practise in the art of the disclosure or conventional techniques means.Specification sheets and embodiment are only regarded as exemplary, and true scope of the present invention and spirit are pointed out by claim below.
Should be understood that, the present invention can carry out various amendment and change not departing from its scope.Scope of the present invention is only limited by appended claim.
Claims (10)
1. a magnesium oxysulfide gelling material composite modifier, is characterized in that:
This composite modifier is made up of the raw material of following weight proportion:
2. a magnesium oxysulfide gelling material composite modifier as claimed in claim 1, is characterized in that:
The weight proportion of each raw material of described composite modifier is
3. a magnesium oxysulfide gelling material composite modifier as claimed in claim 1 or 2, is characterized in that: described Citrate trianion is one or more in Trisodium Citrate, Tripotassium Citrate, citrate of lime.
4. a magnesium oxysulfide gelling material composite modifier as claimed in claim 1 or 2, is characterized in that: described potassium primary phosphate is the PHOSPHORIC ACID TECH.GRADE potassium dihydrogen that content is greater than 99%.
5. a magnesium oxysulfide gelling material composite modifier as claimed in claim 1 or 2, is characterized in that: described boric acid is the technical grade that content is greater than 99%.
6. a magnesium oxysulfide gelling material composite modifier as claimed in claim 1 or 2, is characterized in that: described Citrate trianion is the technical grade Trisodium Citrate that content is greater than 99%.
7. a magnesium oxysulfide gelling material composite modifier as claimed in claim 1 or 2, is characterized in that: described Sunmorl N 60S is the technical grade that content is greater than 99%.
8. a magnesium oxysulfide gelling material composite modifier as claimed in claim 1 or 2, is characterized in that: described TYLOSE 30000 is a kind of water-soluble cellulose ether analog derivative obtained through chemical modification by natural cellulose.
9. a preparation method for the magnesium oxysulfide gelling material composite modifier as described in any one of claim 1-8, is characterized in that: according to proportioning, each raw material is added stirrer, stirs and obtain product.
10. a preparation method for magnesium oxysulfide gelling material composite modifier as claimed in claim 9, is characterized in that: the speed of described stirring is 40-70rpm.
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| CN201510455653.3A CN105060764A (en) | 2015-07-29 | 2015-07-29 | Magnesium oxysulfate gel composite modifier and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105367034A (en) * | 2015-12-15 | 2016-03-02 | 张家港市盛港绿色防火建材有限公司 | Magnesium oxysulfate board modifying agent and using method thereof |
| CN105731984A (en) * | 2016-01-20 | 2016-07-06 | 卓达新材料科技集团有限公司 | High-temperature-resistant fireproof core board and manufacturing method thereof |
| CN110105042A (en) * | 2019-05-24 | 2019-08-09 | 宁国格闰新材料科技有限公司 | A kind of porcelain algae silicon composite and preparation method thereof |
| CN111747670A (en) * | 2019-03-29 | 2020-10-09 | 河北工业大学 | Enhanced magnesium oxysulfate cement retarder |
| CN113773042A (en) * | 2021-11-03 | 2021-12-10 | 长安大学 | Modified magnesium phosphate cement mortar and preparation method thereof |
| CN114656192A (en) * | 2022-04-29 | 2022-06-24 | 山东汇恩特琦科技发展有限公司 | Composite modifier for environment-friendly magnesium oxysulfate product |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105367034A (en) * | 2015-12-15 | 2016-03-02 | 张家港市盛港绿色防火建材有限公司 | Magnesium oxysulfate board modifying agent and using method thereof |
| CN105731984A (en) * | 2016-01-20 | 2016-07-06 | 卓达新材料科技集团有限公司 | High-temperature-resistant fireproof core board and manufacturing method thereof |
| CN105731984B (en) * | 2016-01-20 | 2018-01-30 | 卓达新材料科技集团有限公司 | A kind of fire resistant core plate and preparation method thereof |
| CN111747670A (en) * | 2019-03-29 | 2020-10-09 | 河北工业大学 | Enhanced magnesium oxysulfate cement retarder |
| CN111747670B (en) * | 2019-03-29 | 2022-12-13 | 河北工业大学 | Enhanced magnesium oxysulfate cement retarder |
| CN110105042A (en) * | 2019-05-24 | 2019-08-09 | 宁国格闰新材料科技有限公司 | A kind of porcelain algae silicon composite and preparation method thereof |
| CN110105042B (en) * | 2019-05-24 | 2021-07-06 | 宁国格闰新材料科技有限公司 | Porcelain algae-silica composite material and preparation method thereof |
| CN113773042A (en) * | 2021-11-03 | 2021-12-10 | 长安大学 | Modified magnesium phosphate cement mortar and preparation method thereof |
| CN114656192A (en) * | 2022-04-29 | 2022-06-24 | 山东汇恩特琦科技发展有限公司 | Composite modifier for environment-friendly magnesium oxysulfate product |
| CN114656192B (en) * | 2022-04-29 | 2022-09-02 | 山东汇恩特琦科技发展有限公司 | Composite modifier for environment-friendly magnesium oxysulfate product |
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