CN115893969A - High-strength bonding gypsum and preparation method thereof - Google Patents
High-strength bonding gypsum and preparation method thereof Download PDFInfo
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- CN115893969A CN115893969A CN202211637820.2A CN202211637820A CN115893969A CN 115893969 A CN115893969 A CN 115893969A CN 202211637820 A CN202211637820 A CN 202211637820A CN 115893969 A CN115893969 A CN 115893969A
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- phosphogypsum
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 69
- 239000010440 gypsum Substances 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 17
- 239000000654 additive Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 230000000996 additive effect Effects 0.000 claims abstract 3
- 238000000034 method Methods 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 150000004683 dihydrates Chemical group 0.000 claims description 5
- 239000012744 reinforcing agent Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical group COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 2
- 239000001856 Ethyl cellulose Substances 0.000 claims description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 239000012190 activator Substances 0.000 claims description 2
- 238000001354 calcination Methods 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 229920006184 cellulose methylcellulose Polymers 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- 235000010944 ethyl methyl cellulose Nutrition 0.000 claims description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- 229920003087 methylethyl cellulose Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 102000004169 proteins and genes Human genes 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 2
- 229940095064 tartrate Drugs 0.000 claims description 2
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 2
- 229920002544 Olefin fiber Polymers 0.000 claims 1
- 239000004767 olefin fiber Substances 0.000 claims 1
- 229920006389 polyphenyl polymer Polymers 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to phosphogypsum, and provides a preparation method of high-strength bonding gypsum for improving the mechanical property of the bonding gypsum, which comprises the following steps: and uniformly mixing the alpha-phosphogypsum, the beta-phosphogypsum and the additive. According to the high-strength bonding gypsum and the preparation method thereof, the alpha-phosphogypsum is added into the bonding gypsum, so that the excellent characteristics of the alpha-phosphogypsum are fully exerted, and the fracture resistance, compression resistance and tensile bonding strength of the bonding gypsum are greatly improved.
Description
Technical Field
The invention relates to the technical field of phosphogypsum, and particularly relates to high-strength bonding gypsum and a preparation method thereof.
Background
Phosphogypsum is a solid waste residue produced when phosphorite is treated by sulfuric acid in the production of phosphoric acid, and 4.5-5.0 t of phosphogypsum can be produced every 1t of phosphoric acid. The main component of the phosphogypsum is dihydrate gypsum (CaSO) 4 ·2H 2 O), the color is mostly grey. Besides the main component of calcium sulfate, the phosphogypsum also contains a small amount of inorganic and organic impurities such as phosphoric acid, silicon, magnesium, iron, aluminum and the like.
By the end of 2021, china had cumulatively accumulated over 7 million tons of phosphogypsum. The harmful chemicals contained in phosphogypsum have an impact on the environment for hundreds of years. Phosphogypsum is slightly soluble in water and can cause extensive groundwater pollution. Phosphorus enters the water body, and the eutrophication is more serious than nitrogen. The environmental protection pressure is huge.
The bonding gypsum is a gypsum bonding agent used in buildings, is mainly used for bonding and installing gypsum components or decorative parts on the buildings, and the corresponding industry standard is bonding gypsum JC/T1025-2007. Currently commercially available or common bonding gypsum is produced from construction gypsum calcined from gypsum ore and is white or near-white in color. Also made of desulfurized gypsum or phosphogypsum, and the color is light orange or light gray.
There are a number of disadvantages associated with the currently marketed cementitious plasters: (1) The strength is low, the bonding gypsum on the market at present is prepared by adopting beta-gypsum and a plurality of chemical additives, but the strength of the beta-gypsum is very low, and the varieties of the chemical additives are more, so that the finished product of the beta-gypsum cannot meet or meet the national industrial standard after the performance of the beta-gypsum fluctuates, and the bonding gypsum prepared from the beta-gypsum cannot meet the requirement of large-size members on the bonding strength; (2) The cost performance is low, the existing commercial bonding gypsum adopts beta-phosphogypsum as a cementing material, and a large proportion of various chemical additives are added, so that the cost is high; (3) The natural resources are consumed, the building gypsum adopted by the bonding gypsum of many brands is calcined by gypsum ore, and the mining and calcining face the resource consumption and the environmental protection pressure.
Disclosure of Invention
The invention aims to provide high-strength bonding gypsum and a preparation method thereof, wherein alpha-phosphogypsum is added into the bonding gypsum, so that the excellent characteristics of the alpha-phosphogypsum are fully exerted, and the bending strength, the compression strength and the tensile bonding strength of the bonding gypsum are greatly improved.
The embodiment of the invention is realized by the following technical scheme: the preparation method of the high-strength bonding gypsum comprises the following steps: according to the mass fraction, 60-85 parts of alpha-phosphogypsum, 15-40 parts of beta-phosphogypsum, 0.2-0.5 part of retarder, 0.5-2.0 parts of excitant, 0.6-0.8 part of anti-crack fiber, 0.03-0.1 part of reinforcing agent and 0.2-0.6 part of ether cellulose are stirred for 30-60 minutes by a stirrer at the rotating speed of 40-80 r/min.
Further, the alpha-phosphogypsum is prepared by treating solid waste phosphogypsum (dihydrate gypsum, caSO) by adopting a steam pressing method (a plurality of methods) 4 ·2H 2 O), alpha-phosphogypsum (CaSO) can be obtained 4 ·1/2H 2 O), the quality of which meets the criteria: alpha type high-strength gypsum of JC/T2038-2010. More specifically, the process for producing the alpha-phosphogypsum is an auto-steam curing process, wherein the raw material phosphogypsum is unaged, the water content is 13-15%, the water-soluble phosphorus is less than or equal to 0.2%, the organic matter is less than or equal to 0.1%, the crystal particles of the alpha-phosphogypsum, the length-diameter ratio of which is 4-5, account for 80% of the total body, the initial setting time is 6-8min, the final setting time is 12-15min, the absolute compressive strength is more than or equal to 30MPa, and the specific surface area is 600 +/-50 square meters per kg. The alpha-phosphogypsum crystal with the length-diameter ratio of 4.
Further, the beta-phosphogypsum is solid waste phosphogypsum (dihydrate gypsum, caSO) 4 ·2H 2 O) is calcined at a specific temperature and then converted into semi-hydrated gypsum (CaSO) 4 ·1/2H 2 O), also called beta-phosphogypsum, phosphorus building gypsum and the like, the quality of which meets the standard: GB/T9776-1988. Has the same gelling function as common building gypsum, and is also suitable for various application fields of the common building gypsum.
More specifically, the retarder comprises one or more of citrate, tripolyphosphate, protein and tartrate; the activator comprises one or more of sodium hydroxide, calcium hydroxide, potassium hydroxide and cement; the anti-crack fibers comprise one or more of polystyrene fibers, natural plant fibers and carbon fibers; the reinforcing agent comprises polyvinyl alcohol or styrene-butadiene rubber powder; the ether cellulose comprises one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose ether, methyl cellulose and ethyl cellulose.
The invention also provides the high-strength bonding gypsum prepared by the preparation method of the high-strength bonding gypsum.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects: the invention relates to high-strength bonding gypsum and a preparation method thereof
(1) Can effectively consume a large amount of industrial waste phosphogypsum, and is added with a large amount of alpha-phosphogypsum, so that the product has excellent breaking strength, compression strength and tensile bonding strength. According to the national industry standard JC/T1025-2007, the important technical index of the high-strength bonding gypsum produced by the method is far higher than that of the bonding gypsum prepared from the common beta-phosphogypsum, and the technical index is also far higher than the regulation of JC/T1025-2007.
(2) The invention adds a certain proportion of alpha-phosphogypsum, utilizes the strength advantage of the phosphogypsum to the maximum extent, and simultaneously cancels or greatly reduces the dosage of chemical auxiliary agents. While fully meeting the industrial samples, the comprehensive material cost of the gypsum is not obviously improved compared with the bonding gypsum prepared from the beta-phosphogypsum.
Detailed Description
Examples 1 to 6
Examples 1-6 provide a method for preparing a high strength adhesive gypsum, the respective components and contents (parts by weight) of which are shown in table 1 below, and examples 1-6 were all mixed at 60 rpm for 45 min.
TABLE 1 Components and their contents in examples 1-6
Comparative examples 1 to 4
Comparative examples 1 to 4 provide a method of preparing a bonding gypsum, each of which had the components and contents shown in table 2 below (examples 1 to 2 were written therein for convenience of comparison), and in comparative examples 1 to 4, mixing was performed at 60 rpm for 45 min.
TABLE 2 Components and their contents in examples 1-2 and comparative examples 1-4
The bonded plasters prepared in examples 1 to 6 and comparative examples 1 to 4 were subjected to a performance test in which the test met the standard JC/T1025-2007, and the results of the flexural strength, compressive strength and tensile bond strength thereof are shown in table 3 below.
TABLE 3 results of performance test of plasters prepared in examples and comparative examples
As can be seen from the test results of table 3:
(1) From the test results of examples 1-6, it can be seen that as the content of α -phosphogypsum increases, the flexural strength, compressive strength and tensile bonding strength of the bonding gypsum all increase, indicating that the addition of α -phosphogypsum can significantly improve various performances of the bonding gypsum, and each performance index is significantly superior to the national industry standard.
(2) From comparison of the results of comparative examples 1-2 and example 1, it can be seen that as the amount of α -phosphogypsum increases excessively, the strength properties of the bonding gypsum also increase, but the increase is slow, that is, the strength properties of the bonding gypsum approach the maximum value, but the cost of the bonding gypsum is greatly increased due to the use of a large amount of α -phosphogypsum in the bonding gypsum, that is, the slight performance improvement obtained by greatly increasing the cost has no value.
(3) From comparison of the results of comparative examples 3-4 and example 2, it can be seen that the maximum change in the properties of the bonding gypsum is the breaking strength and compressive strength of the bonding gypsum with the gradual decrease of the content of the alpha-phosphogypsum, because the two properties are mainly provided by the alpha-phosphogypsum, and the beta-phosphogypsum has certain tensile bonding strength per se, so that the change of the properties is not obvious, but the tensile bonding strength of the bonding gypsum is lower than that of the bonding gypsum in the loitering up and down international standards with the continuous decrease of the content of the alpha-phosphogypsum to reduce to 0, which indicates that the properties of the bonding gypsum are extremely unstable.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The preparation method of the high-strength bonding gypsum is characterized by comprising the following steps: and uniformly mixing the alpha-phosphogypsum, the beta-phosphogypsum and the additive.
2. The method for preparing high-strength bonding gypsum according to claim 1, wherein the α -phosphogypsum is dihydrate phosphogypsum prepared by a steam-pressing method.
3. The method for preparing high-strength bonding gypsum according to claim 1, wherein the beta-phosphogypsum is prepared from dihydrate phosphogypsum by a calcination method.
4. The preparation method of the high-strength bonding gypsum according to claim 1, wherein the components comprise, by mass, 60-85 parts of alpha-phosphogypsum, 15-40 parts of beta-phosphogypsum and 1.53-4 parts of additives.
5. The method for preparing high strength adhesive gypsum according to claim 1, wherein the additives include retarder, excitant, anti-crack fiber, reinforcing agent, ether cellulose.
6. The preparation method of the high-strength bonding gypsum according to claim 5, wherein the additive comprises the following components in parts by weight: 0.2-0.5 part of retarder, 0.5-2.0 parts of excitant, 0.6-0.8 part of anti-crack fiber, 0.03-1 part of reinforcing agent and 0.2-0.6 part of ether cellulose.
7. The method for preparing high-strength adhesive gypsum according to claim 5, wherein the retarder comprises one or more of citrate, tripolyphosphate, protein and tartrate; the activator comprises one or more of sodium hydroxide, calcium hydroxide, potassium hydroxide and cement; the anti-crack fibers comprise one or more of polyphenyl olefin fibers, natural plant fibers and carbon fibers; the reinforcing agent comprises polyvinyl alcohol or styrene-butadiene rubber powder; the ether cellulose comprises one or more of hydroxypropyl methyl cellulose, hydroxyethyl cellulose ether, methyl cellulose and ethyl cellulose.
8. The method for producing high strength cohesive gypsum according to claim 1, wherein the mixing is carried out by stirring with a stirrer at a rotation speed of 40 to 80 rpm for 30 to 60 minutes.
9. A high-strength adhesive gypsum, characterized by being obtained by the production method of a high-strength adhesive gypsum according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211637820.2A CN115893969A (en) | 2022-12-16 | 2022-12-16 | High-strength bonding gypsum and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211637820.2A CN115893969A (en) | 2022-12-16 | 2022-12-16 | High-strength bonding gypsum and preparation method thereof |
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| CN115893969A true CN115893969A (en) | 2023-04-04 |
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| CN202211637820.2A Pending CN115893969A (en) | 2022-12-16 | 2022-12-16 | High-strength bonding gypsum and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628349A (en) * | 2015-02-06 | 2015-05-20 | 武汉理工大学 | Phosphogypsum based high flow state grouting material |
| CN104692755A (en) * | 2015-02-02 | 2015-06-10 | 武汉理工大学 | Phosphogypsum-base self-leveling material and preparation method thereof |
| CN105777039A (en) * | 2016-03-31 | 2016-07-20 | 武汉理工大学 | Phosphogypsum-based light-weight insulation board and preparation method thereof |
| CN108911540A (en) * | 2018-08-08 | 2018-11-30 | 四川明康善筑建材有限公司 | A kind of preparation method of nano-material modified ardealite base bonding agent |
-
2022
- 2022-12-16 CN CN202211637820.2A patent/CN115893969A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692755A (en) * | 2015-02-02 | 2015-06-10 | 武汉理工大学 | Phosphogypsum-base self-leveling material and preparation method thereof |
| CN104628349A (en) * | 2015-02-06 | 2015-05-20 | 武汉理工大学 | Phosphogypsum based high flow state grouting material |
| CN105777039A (en) * | 2016-03-31 | 2016-07-20 | 武汉理工大学 | Phosphogypsum-based light-weight insulation board and preparation method thereof |
| CN108911540A (en) * | 2018-08-08 | 2018-11-30 | 四川明康善筑建材有限公司 | A kind of preparation method of nano-material modified ardealite base bonding agent |
Non-Patent Citations (1)
| Title |
|---|
| 吴超等: ""磷石膏基粘结石膏的制备及影响因素研究"", 《新型建筑材料》, vol. 48, no. 3, pages 175 - 80 * |
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