CN109749726A - A kind of medium temperature phosphate thermosetting resin gelling system and preparation method thereof - Google Patents
A kind of medium temperature phosphate thermosetting resin gelling system and preparation method thereof Download PDFInfo
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- CN109749726A CN109749726A CN201711063750.3A CN201711063750A CN109749726A CN 109749726 A CN109749726 A CN 109749726A CN 201711063750 A CN201711063750 A CN 201711063750A CN 109749726 A CN109749726 A CN 109749726A
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- thermosetting resin
- phosphate
- gelling system
- temperature phosphate
- resin gelling
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- 229920005989 resin Polymers 0.000 title claims abstract description 64
- 239000011347 resin Substances 0.000 title claims abstract description 64
- 239000010452 phosphate Substances 0.000 title claims abstract description 56
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title claims abstract description 56
- 229910019142 PO4 Inorganic materials 0.000 title claims abstract description 55
- 229920001187 thermosetting polymer Polymers 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000395 magnesium oxide Substances 0.000 claims description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 10
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 239000013505 freshwater Substances 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 7
- 150000004706 metal oxides Chemical class 0.000 claims description 7
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 6
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 5
- 239000004327 boric acid Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000011812 mixed powder Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 4
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 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
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 229920000388 Polyphosphate Polymers 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 2
- 239000010426 asphalt Substances 0.000 claims description 2
- 229910021538 borax Inorganic materials 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000007849 furan resin Substances 0.000 claims description 2
- 229920005610 lignin Polymers 0.000 claims description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 235000011007 phosphoric acid Nutrition 0.000 claims description 2
- 239000001205 polyphosphate Substances 0.000 claims description 2
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 2
- 239000011863 silicon-based powder Substances 0.000 claims description 2
- 239000004328 sodium tetraborate Substances 0.000 claims description 2
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 32
- 238000007789 sealing Methods 0.000 abstract description 11
- 239000003129 oil well Substances 0.000 abstract description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical class [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012224 working solution Substances 0.000 abstract description 2
- 238000006467 substitution reaction Methods 0.000 abstract 1
- 239000004575 stone Substances 0.000 description 12
- 239000003469 silicate cement Substances 0.000 description 9
- 239000002002 slurry Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- -1 aliphatic amines Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical group [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of medium temperature phosphate thermosetting resin gelling systems in oil gas well cementing operation field and preparation method thereof.The medium temperature phosphate thermosetting resin gelling system, thermosetting resin, the phosphate cement contained in system can be formed by curing with advantages of higher compressive strength under wellbore environment, compared with low elastic modulus, compared with the Behavior of Hardened Cement Paste of low-permeability, and Behavior of Hardened Cement Paste anticorrosion effect is good, can effectively increase sealing validity period of the cement sheath in acid medium.By using auxiliary resin curing agent, retarder, which can use within the temperature range of 45~80 DEG C, and integrally the pumpable time meets site operation requirement to system.Medium temperature phosphate thermosetting resin gelling system can be realized under the hole condition of part to all or part substitution of silicate oil-well cement, more effectively realize the complete seal of pit shaft, provide a kind of novel working solution system for oil gas well cementing operation, with good application prospect.
Description
Technical Field
The invention relates to a working solution for the field of oil and gas well cementation, in particular to a medium-temperature phosphate thermosetting resin gelling system and a preparation method thereof.
Background
At present, Portland oil well cement is a cementing material commonly used for oil and gas well cementing, the main component of the Portland oil well cement is a calcium silicate-based material, the Portland oil well cement can generate self-hydration reaction after meeting water, and can be hardened into solid set cement under certain temperature and pressure conditions. Owing to the hydraulic activity of silicate material, the silicate oil well cement is well compatible with various water-based additives (fluid loss additive, retarder and the like) to form slurry with certain fluidity, and the slurry can be lightened or weighted by mixing various inorganic materials. The silicate cement stone basically meets the operation requirements of oil and gas wells due to higher compressive strength, lower permeability and better durability, so the silicate cement stone is very commonly applied to the operations of well cementation, well completion and the like of conventional oil and gas wells. However, the silicate cement stone also has the defects of the silicate cement stone, and one is that the silicate cement stone is hard and brittle under higher compressive strength, so that the silicate cement stone is damaged when being subjected to larger external force; and secondly, the silicate material has self-contractibility, and the whole volume of the set cement is reduced due to the crystal transformation of a hydration product in the self-hydration process of the silicate material. The defects on the cement sheath lead to the easy breakage of the cement sheath of the shaft, and the cement sheath and the casing as well as the cement sheath and the well wall form micro annular gaps, so that the effective sealing of the cement sheath on the annular space is seriously influenced, stratum fluid is led to flee to a well mouth, and the production safety is influenced. Therefore, improving the hardness and brittleness of the silicate cement stone and compensating the self shrinkage are urgent problems facing oil and gas well cementing in recent years.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a medium-temperature phosphate thermosetting resin gelling system. In particular to a medium temperature phosphate thermosetting resin gelling system and a preparation method thereof. The medium-temperature phosphate thermosetting resin gelling system can be self-gelled and solidified into a consolidated body with higher compressive strength and durability at the temperature and pressure of a shaft after being injected into the shaft, so that a sleeve is effectively fixed, upward fluid channeling is isolated, and the requirements of oil and gas well cementing safety construction and annular sealing are met. The middle temperature phosphate thermosetting resin gelling system is at 45-80 ℃, the time from the gelling of a flowing state to the solid state can be adjusted according to requirements, the safety of on-site injection construction is ensured, and the middle temperature phosphate thermosetting resin gelling system can partially or completely replace the prior common silicate cement slurry system.
One of the objects of the present invention is to provide a medium temperature phosphate thermosetting resin gelling system. The medium temperature phosphate thermosetting resin gelling system comprises the following components in parts by weight:
wherein,
the thermosetting resin can be one or more selected from melamine formaldehyde resin, furan resin, epoxy resin and the like.
The resin curing agent can be one or more selected from aliphatic series, aliphatic amines, esters, sulfonic acid and sulfonate resin curing agents.
The phosphate can be at least one or more selected from phosphoric acid, potassium dihydrogen phosphate, sodium dihydrogen phosphate, ammonium dihydrogen phosphate and polyphosphate. The phosphate cement is hydrated and condensed into cement stones with higher compressive strength, and the low alkalinity characteristic of the phosphate cement stones can ensure that the phosphate cement stones have excellent acid and alkali corrosion resistance; the thermosetting resin forms an insoluble and infusible three-dimensional structure under the action of the resin curing agent, and is mutually interpenetrated with phosphate cement stone to synergistically enhance the mechanical property and corrosion resistance of a consolidation body and increase the wall cementing strength, thereby realizing more long-term effective sealing of an annular space.
The metal oxide may be selected from at least one of dead-burned magnesium oxide, aluminum oxide, calcium oxide, or other metal oxides. Both the metal oxide and phosphate may gel to form phosphate cement.
The retarder can be at least one selected from citrate, boric acid and borax, and can be inorganic salt or organic salt. The retarder can adjust and control the thickening time of the medium-temperature phosphate thermosetting resin gelling system.
The fluid loss agent may be selected from at least one of, but not limited to, polyvinyl alcohol, cellulose, and lignin fluid loss agents. The fluid loss agent can reduce the loss of water of the gelling system in the flowing process of a shaft.
The lightening or weighting material can be inorganic material or organic material, and can be at least one of glass micro-beads, silicon powder, iron ore powder, modified asphalt and the like. The gelled system can realize density adjustment by blending lightening or weighting materials, meets the requirements on slurry density under different well conditions, and has good slurry sedimentation stability. The density of the medium-temperature phosphate thermosetting resin gelling system applicable to the temperature of 45-80 ℃ can be reduced or increased by mixing and stirring the materials at 1.20-2.50 g/cm3The curing time of the system can be adjusted within 30-300 min by adjusting the addition of the retarder.
The resin in the gelled system can be crosslinked and consolidated to form a three-dimensional grid structure, the phosphate cement can be consolidated into phosphate cement stone, the phosphate gelled material is filled in the resin frame, and the phosphate gelled structure and the three-dimensional resin net structure are mutually interpenetrated to form a consolidated body with certain strength and stability, so that the effective sealing of an annular space is realized, and the sealing effectiveness is maintained for a long time. The density, the rheology, the curing time and the consolidation body strength of the gelling system can be conveniently adjusted by changing the composition proportion of the resin emulsion, the phosphate gelling material, the admixture and the like. The cement mortar has excellent mechanical performance and can meet the basic requirement of well cementing cement slurry, and the problem of sealing failure of the cement mortar ring caused by the defects of high brittleness, easy damage, easy corrosion and the like of the conventional portland cement mortar can be well solved. The cement can partially replace the existing portland cement, can improve the annular sealing quality and improve the sealing property of the cement sheath.
Another object of the present invention is to provide a method for preparing the intermediate temperature phosphate thermosetting resin gelling system, which comprises the following steps:
firstly, weighing the components according to the using amount for later use; secondly, uniformly mixing and stirring the metal oxide and the lightening material or the weighting material to obtain mixed powder; uniformly mixing phosphate, thermosetting resin, a resin curing agent, a retarder, a fluid loss agent and fresh water to obtain a mixed liquid; and finally, adding the mixed powder into the mixed liquid under stirring, and uniformly stirring to obtain the medium-temperature phosphate thermosetting resin gelling system.
Effects of the invention
① the moderate temperature phosphate thermosetting resin gel system can keep longer flowing ability at normal temperature, the thickening time of the system can be adjusted and controlled within the temperature range of 45-80 ℃, ② the gel system can have the system density of 1.20-2.50 g/cm by adding lightening or weighting materials3The cement slurry has adjustable sedimentation stability, the thermosetting resin material in the ③ gelling system is solidified under the action of a curing agent, the solidified body has higher compressive strength and lower elastic modulus, and the solidification time is adjustable and controllable within the temperature range of 45-80 ℃, phosphate set generated by the reaction of phosphate in the ④ gelling system and metal oxide has good compressive strength, excellent acid resistance, gas corrosion resistance and high temperature resistance, the hardening time of the phosphate cement is adjustable and controllable within the temperature range of 45-80 ℃ by adjusting the addition amount of a matched retarder, ⑤ is used for effectively isolating the migration of shaft fluid and realizing the long-term sealing of the annulus by the interpenetrating structures of the phosphate cement and the thermosetting resin, thereby synergistically enhancing the strength and the compactness of the solidified body and the durability in an acid medium, and providing a new gelling system for preventing the migration of the annulus fluid of an oil-gas well, and having better application prospect.
Application field and application prospect of the invention
The invention relates to a medium-temperature phosphate thermosetting resin gelling system for well cementation, which is mainly used in the field of medium-temperature oil and gas well cementing, makes up the performance deficiency of Portland oil well cement under special conditions, and solves part of well cementation problems. The medium temperature phosphate thermosetting resin gelling system has good rheological property, slurry is easy for well cementation pump injection construction, the curing time can be controlled under the medium temperature condition, and the well cementation construction condition is met.
The medium temperature phosphate thermosetting resin gelling system has strong wall surface cementing capacity, and a consolidated body has good elastic deformation capacity, excellent impact resistance and corrosion resistance. The medium temperature phosphate thermosetting resin gelling system can partially replace silicate cement slurry to be applied under special well conditions, improves the sealing property of the annulus, ensures the high-efficiency production of oil and gas wells, and has good popularization and application values.
Detailed Description
The present invention will be further described with reference to the following examples. However, the present invention is not limited to these examples.
Example 1
(1) Weighing 400g of dead-burned magnesium oxide, 100g of monopotassium phosphate, 10g of FSAM-H polyvinyl alcohol fluid loss agent, 10g of medium temperature retarder boric acid, 60g of epoxy resin emulsion, 30g of resin curing agent tetraethylenepentamine and 200g of fresh water.
(2) Uniformly mixing potassium dihydrogen phosphate, thermosetting resin, a resin curing agent, a medium-temperature retarder, a polyvinyl alcohol fluid loss agent and fresh water to obtain a mixed liquid;
(3) adding the mixed liquid into a mixing container, rotating a stirrer at a low speed (4000 +/-200 revolutions per minute), adding the light-burned magnesium oxide powder within 15 seconds, covering a cover of the stirrer, continuously stirring at a high speed (12000 +/-500 revolutions per minute) for 35 seconds, and uniformly stirring to obtain a medium-temperature phosphate thermosetting resin gelling system with the density of 1.60g/cm3The thickening time at 45 ℃ is 380min, the compressive strength of a consolidated body is 20.2MPa/48h, and the elastic modulus is 7.6GPa, which is measured according to the GB-T19139-2012 oil well cement test method.
Example 2
(1) Weighing 300g of dead-burned magnesium oxide, 100g of sodium dihydrogen phosphate, 16g of FSAM-H polyvinyl alcohol fluid loss agent, 15g of medium-temperature retarder boric acid, 80g of epoxy resin emulsion, 20g of resin curing agent tetraethylenepentamine, 250g of fresh water and 300g of glass beads.
(2) Mixing the dead burned magnesium oxide and the glass beads uniformly for later use;
(3) uniformly mixing sodium dihydrogen phosphate, thermosetting resin, a resin curing agent, a medium-temperature retarder, a polyvinyl alcohol fluid loss agent and fresh water to obtain a mixed liquid for later use;
(4) adding the mixed liquid into a mixing container, rotating a stirrer at a low speed (4000 +/-200 revolutions per minute), adding the mixture of the dead burned magnesium oxide and the glass beads within 15 seconds, covering a cover of the stirrer, continuously stirring at a high speed (6000 +/-500 revolutions per minute) for 35 seconds, and uniformly stirring to obtain a medium-temperature phosphate thermosetting resin gelling system with the density of 1.30g/cm3Thickening time at 60 ℃ is 290min, compressive strength of the consolidated body is 18.2MPa/48h, and elastic modulus is 6.9 GPa.
Example 3
(1) Weighing 250g of dead-burned magnesium oxide, 100g of sodium dihydrogen phosphate, 20g of FSAM-H polyvinyl alcohol fluid loss agent, 20g of medium-temperature retarder boric acid, 60g of epoxy resin emulsion, 10g of resin curing agent tetraethylenepentamine, 250g of fresh water and 300g of iron ore powder.
(2) Mixing the dead burned magnesium oxide and the iron ore powder uniformly to obtain mixed powder for later use;
(3) uniformly mixing sodium dihydrogen phosphate, thermosetting resin, a resin curing agent, a medium-temperature retarder, a polyvinyl alcohol fluid loss agent and fresh water to obtain a mixed liquid for later use;
(4) adding the mixed liquid into a mixing container, rotating a stirrer at a low speed (4000 +/-200 revolutions per minute), adding the mixture of the dead burned magnesium oxide and the iron ore powder within 15 seconds, covering a cover of the stirrer, continuously stirring at a high speed (6000 +/-500 revolutions per minute) for 35 seconds, and uniformly stirring to obtain a medium-temperature phosphate thermosetting resin gelling system with the density of 2.30g/cm3Thickening time at 80 ℃ is 220min, compressive strength of the consolidated body is 15.3MPa/48h, and elastic modulus is 6.2 GPa.
Claims (10)
1. The medium temperature phosphate thermosetting resin gelling system comprises the following components in parts by weight:
2. an intermediate-temperature phosphate thermosetting resin gelling system according to claim 1, comprising the following components in parts by weight:
3. an intermediate temperature phosphate thermosetting resin gelling system according to claim 1 or 2, characterized in that:
the thermosetting resin is at least one of melamine formaldehyde resin, furan resin and epoxy resin.
4. An intermediate temperature phosphate thermosetting resin gelling system according to claim 1 or 2, characterized in that:
the resin curing agent is selected from at least one of aliphatic series, ester, sulfonic acid and sulfonate.
5. An intermediate temperature phosphate thermosetting resin gelling system according to claim 1 or 2, characterized in that:
the phosphate is at least one selected from phosphoric acid, monopotassium phosphate, sodium dihydrogen phosphate, ammonium dihydrogen phosphate and polyphosphate.
6. An intermediate temperature phosphate thermosetting resin gelling system according to claim 1 or 2, characterized in that:
the metal oxide is at least one selected from the group consisting of dead-burned magnesium oxide, calcium oxide, and aluminum oxide.
7. An intermediate temperature phosphate thermosetting resin gelling system according to claim 1 or 2, characterized in that:
the retarder is at least one of citrate, boric acid and borax.
8. An intermediate temperature phosphate thermosetting resin gelling system according to claim 1 or 2, characterized in that:
the fluid loss agent is selected from at least one of polyvinyl alcohol, cellulose and lignin fluid loss agents.
9. An intermediate temperature phosphate thermosetting resin gelling system according to claim 1 or 2, characterized in that:
the lightening material or weighting material is at least one selected from glass beads, silicon powder, iron ore powder and modified asphalt.
10. A process for the preparation of an intermediate temperature phosphate thermosetting resin gelling system according to any of claims 1 to 9, characterized in that it comprises the following steps:
firstly, weighing the components according to the using amount for later use; secondly, uniformly mixing and stirring the metal oxide and the lightening material or the weighting material to obtain mixed powder; uniformly mixing phosphate, thermosetting resin, a resin curing agent, a retarder, a fluid loss agent and fresh water to obtain a mixed liquid; and finally, adding the mixed powder into the mixed liquid under stirring, and uniformly stirring to obtain the medium-temperature phosphate thermosetting resin gelling system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115893972A (en) * | 2022-11-22 | 2023-04-04 | 中建材中研益科技有限公司 | Phosphoaluminate cement-based carbon sealing material and preparation method thereof |
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