CN113881481B - Natural ester insulating liquid - Google Patents
Natural ester insulating liquid Download PDFInfo
- Publication number
- CN113881481B CN113881481B CN202111086869.9A CN202111086869A CN113881481B CN 113881481 B CN113881481 B CN 113881481B CN 202111086869 A CN202111086869 A CN 202111086869A CN 113881481 B CN113881481 B CN 113881481B
- Authority
- CN
- China
- Prior art keywords
- tocopherol
- natural ester
- sterol
- antioxidant
- insulating
- 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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- 150000002148 esters Chemical class 0.000 title claims abstract description 69
- 239000007788 liquid Substances 0.000 title abstract description 30
- GVJHHUAWPYXKBD-IEOSBIPESA-N α-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 claims abstract description 77
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229930182558 Sterol Natural products 0.000 claims abstract description 47
- 150000003432 sterols Chemical class 0.000 claims abstract description 47
- 235000003702 sterols Nutrition 0.000 claims abstract description 47
- 229930003799 tocopherol Natural products 0.000 claims abstract description 43
- 239000011732 tocopherol Substances 0.000 claims abstract description 43
- GVJHHUAWPYXKBD-UHFFFAOYSA-N d-alpha-tocopherol Natural products OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 claims abstract description 39
- 235000010384 tocopherol Nutrition 0.000 claims abstract description 39
- 229960001295 tocopherol Drugs 0.000 claims abstract description 39
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 30
- 235000012424 soybean oil Nutrition 0.000 claims abstract description 30
- 239000003549 soybean oil Substances 0.000 claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 29
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 24
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- LGJMUZUPVCAVPU-UHFFFAOYSA-N beta-Sitostanol Natural products C1CC2CC(O)CCC2(C)C2C1C1CCC(C(C)CCC(CC)C(C)C)C1(C)CC2 LGJMUZUPVCAVPU-UHFFFAOYSA-N 0.000 claims description 40
- WGVKWNUPNGFDFJ-DQCZWYHMSA-N β-tocopherol Chemical compound OC1=CC(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C WGVKWNUPNGFDFJ-DQCZWYHMSA-N 0.000 claims description 40
- GZIFEOYASATJEH-VHFRWLAGSA-N δ-tocopherol Chemical compound OC1=CC(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1 GZIFEOYASATJEH-VHFRWLAGSA-N 0.000 claims description 40
- 235000006708 antioxidants Nutrition 0.000 claims description 28
- OILXMJHPFNGGTO-UHFFFAOYSA-N (22E)-(24xi)-24-methylcholesta-5,22-dien-3beta-ol Natural products C1C=C2CC(O)CCC2(C)C2C1C1CCC(C(C)C=CC(C)C(C)C)C1(C)CC2 OILXMJHPFNGGTO-UHFFFAOYSA-N 0.000 claims description 20
- OQMZNAMGEHIHNN-UHFFFAOYSA-N 7-Dehydrostigmasterol Natural products C1C(O)CCC2(C)C(CCC3(C(C(C)C=CC(CC)C(C)C)CCC33)C)C3=CC=C21 OQMZNAMGEHIHNN-UHFFFAOYSA-N 0.000 claims description 20
- SGNBVLSWZMBQTH-FGAXOLDCSA-N Campesterol Natural products O[C@@H]1CC=2[C@@](C)([C@@H]3[C@H]([C@H]4[C@@](C)([C@H]([C@H](CC[C@H](C(C)C)C)C)CC4)CC3)CC=2)CC1 SGNBVLSWZMBQTH-FGAXOLDCSA-N 0.000 claims description 20
- GZIFEOYASATJEH-UHFFFAOYSA-N D-delta tocopherol Natural products OC1=CC(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1 GZIFEOYASATJEH-UHFFFAOYSA-N 0.000 claims description 20
- BTEISVKTSQLKST-UHFFFAOYSA-N Haliclonasterol Natural products CC(C=CC(C)C(C)(C)C)C1CCC2C3=CC=C4CC(O)CCC4(C)C3CCC12C BTEISVKTSQLKST-UHFFFAOYSA-N 0.000 claims description 20
- HZYXFRGVBOPPNZ-UHFFFAOYSA-N UNPD88870 Natural products C1C=C2CC(O)CCC2(C)C2C1C1CCC(C(C)=CCC(CC)C(C)C)C1(C)CC2 HZYXFRGVBOPPNZ-UHFFFAOYSA-N 0.000 claims description 20
- 229940087168 alpha tocopherol Drugs 0.000 claims description 20
- 229940076810 beta sitosterol Drugs 0.000 claims description 20
- 229940066595 beta tocopherol Drugs 0.000 claims description 20
- NJKOMDUNNDKEAI-UHFFFAOYSA-N beta-sitosterol Natural products CCC(CCC(C)C1CCC2(C)C3CC=C4CC(O)CCC4C3CCC12C)C(C)C NJKOMDUNNDKEAI-UHFFFAOYSA-N 0.000 claims description 20
- SGNBVLSWZMBQTH-PODYLUTMSA-N campesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CC[C@@H](C)C(C)C)[C@@]1(C)CC2 SGNBVLSWZMBQTH-PODYLUTMSA-N 0.000 claims description 20
- 235000000431 campesterol Nutrition 0.000 claims description 20
- 235000010389 delta-tocopherol Nutrition 0.000 claims description 20
- 235000010382 gamma-tocopherol Nutrition 0.000 claims description 20
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 claims description 20
- KZJWDPNRJALLNS-VJSFXXLFSA-N sitosterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CC[C@@H](CC)C(C)C)[C@@]1(C)CC2 KZJWDPNRJALLNS-VJSFXXLFSA-N 0.000 claims description 20
- 229950005143 sitosterol Drugs 0.000 claims description 20
- HCXVJBMSMIARIN-PHZDYDNGSA-N stigmasterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)/C=C/[C@@H](CC)C(C)C)[C@@]1(C)CC2 HCXVJBMSMIARIN-PHZDYDNGSA-N 0.000 claims description 20
- 229940032091 stigmasterol Drugs 0.000 claims description 20
- 235000016831 stigmasterol Nutrition 0.000 claims description 20
- BFDNMXAIBMJLBB-UHFFFAOYSA-N stigmasterol Natural products CCC(C=CC(C)C1CCCC2C3CC=C4CC(O)CCC4(C)C3CCC12C)C(C)C BFDNMXAIBMJLBB-UHFFFAOYSA-N 0.000 claims description 20
- 229960000984 tocofersolan Drugs 0.000 claims description 20
- 235000004835 α-tocopherol Nutrition 0.000 claims description 20
- 239000002076 α-tocopherol Substances 0.000 claims description 20
- 235000007680 β-tocopherol Nutrition 0.000 claims description 20
- 239000011590 β-tocopherol Substances 0.000 claims description 20
- 239000002478 γ-tocopherol Substances 0.000 claims description 20
- QUEDXNHFTDJVIY-DQCZWYHMSA-N γ-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1 QUEDXNHFTDJVIY-DQCZWYHMSA-N 0.000 claims description 20
- 239000002446 δ-tocopherol Substances 0.000 claims description 20
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 15
- 239000002671 adjuvant Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 229920013639 polyalphaolefin Polymers 0.000 claims description 5
- 235000021466 carotenoid Nutrition 0.000 claims description 3
- 150000001747 carotenoids Chemical class 0.000 claims description 3
- 229930002875 chlorophyll Natural products 0.000 claims description 3
- 235000019804 chlorophyll Nutrition 0.000 claims description 3
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 abstract description 21
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 abstract description 20
- 230000003647 oxidation Effects 0.000 abstract description 15
- 239000011810 insulating material Substances 0.000 abstract description 3
- 231100000956 nontoxicity Toxicity 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 49
- 235000019198 oils Nutrition 0.000 description 49
- 238000002156 mixing Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000015556 catabolic process Effects 0.000 description 8
- 239000002480 mineral oil Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 230000001154 acute effect Effects 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 235000010446 mineral oil Nutrition 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 235000013824 polyphenols Nutrition 0.000 description 6
- 238000003756 stirring Methods 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 235000015112 vegetable and seed oil Nutrition 0.000 description 5
- 239000008158 vegetable oil Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- -1 tocopherol radical Chemical class 0.000 description 4
- 235000019149 tocopherols Nutrition 0.000 description 4
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 4
- QUEDXNHFTDJVIY-UHFFFAOYSA-N γ-tocopherol Chemical class OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1 QUEDXNHFTDJVIY-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 244000269722 Thea sinensis Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 2
- 150000003071 polychlorinated biphenyls Chemical group 0.000 description 2
- 150000008442 polyphenolic compounds Chemical class 0.000 description 2
- 238000007348 radical reaction Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 231100000460 acute oral toxicity Toxicity 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010227 cup method (microbiological evaluation) Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 231100000507 endocrine disrupting Toxicity 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/044—Cyclic ethers having four or more ring atoms, e.g. furans, dioxolanes
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/046—Hydroxy ethers
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/144—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/09—Complexes with metals
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
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- C10N2040/16—Dielectric; Insulating oil or insulators
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Abstract
The invention belongs to the technical field of insulating materials. In particular to a natural ester insulating fluid. The preparation raw materials of the natural ester insulating liquid comprise, by mass: 96.0-99.0 percent of soybean oil, 0.4-2.5 percent of antioxidant, 0.1-0.5 percent of pour point depressant and 0.1-1.0 percent of auxiliary agent; the antioxidant consists of tocopherol, sterol, antioxidant T501 and citric acid; the mass ratio of the tocopherol to the sterol to the antioxidant T501 to the citric acid is (0.1-0.5): (0.1-0.5): (0.1-1.0): (0.1-0.5). The insulating liquid has good electrical insulating property, high ignition point, high flash point, low pour point, no toxicity, no harm, good biodegradability and oxidation stability.
Description
Technical Field
The invention belongs to the technical field of insulating materials. In particular to a natural ester insulating fluid.
Background
The insulating oil plays an important role in the operation of power equipment, is compared with blood in power generation and power supply equipment, is mainly used for oil-immersed insulating high-voltage equipment, such as oil-immersed transformers, circuit breakers, transformers and the like, eliminates insulating air gaps in the equipment through oil immersion and filling, and plays roles in insulating, radiating, cooling, extinguishing electric arcs and the like.
Conventional insulating oils for electric power equipment use mineral oils and synthetic compound-based insulating oils such as biphenyl, siloxane, phthalate, and the like. Mineral oil has good oxidation resistance, good insulation strength, heat dissipation capability and the like, so that the mineral oil is widely applied to power systems all the time. However, the mineral oil has low ignition point and flash point, generally below 180 ℃, not only has problems in safety, but also has non-renewable property and difficult degradability, the biodegradation rate of the mineral oil is generally lower than 30%, and in addition, the waste of the mineral oil also contains some toxic and harmful components such as sulfur, phosphorus, chlorine, heavy metals and the like, and the defects can bring serious energy problems and environmental problems. Although synthetic compound insulating oil has excellent insulating properties, high ignition point and the like, synthetic insulating oil has problems of being not easily degraded, unsafe, high price and the like, particularly phthalate is pointed out to have an endocrine disrupting effect, and polychlorinated biphenyl (PCB) is prohibited because of great problems in safety, toxicity, environmental pollution and the like. Therefore, as the environmental problems and the safety hazards of mineral oils and synthetic insulating oils are increased, there is an urgent need to find a green and safe product to replace them as insulating oil for transformers.
At present, the technology discloses environment-friendly insulating oil taking vegetable oil as a raw material, and some prepared environment-friendly insulating oil has high ignition point and flash point but low condensation point (pour point), and some environment-friendly insulating oil has low pour point but low flash point.
Disclosure of Invention
Based on the natural ester insulating oil, the natural ester insulating oil provided by the invention has good electrical insulating property, and also has high ignition point, high flash point, low pour point, no toxicity, no harm, good biodegradability and oxidation stability.
The technical scheme is as follows:
the natural ester insulating fluid is prepared from the following raw materials in percentage by mass:
the antioxidant consists of tocopherol, sterol, antioxidant T501 and citric acid;
the mass ratio of the tocopherol to the sterol to the antioxidant T501 to the citric acid is (0.1-0.5): (0.1-0.5): (0.1-1.0): (0.1-0.5).
In one embodiment, the raw materials for preparing the natural ester insulating liquid comprise, by mass:
in one embodiment, the raw materials for preparing the natural ester insulating liquid comprise, by mass:
in one embodiment, the mass ratio of the tocopherol to the sterol to the antioxidant T501 to the citric acid is (0.1-0.3): (0.25-0.4): (0.3-1.0): (0.1-0.3).
In one embodiment, the sterol is a phytosterol.
In one embodiment, the sterol comprises one or more of campesterol, stigmasterol, and beta-sitosterol.
In one embodiment, the mass of the campesterol, stigmasterol and beta-sitosterol is (0-10): (0% -40): (50-100).
In one embodiment, the campesterol, stigmasterol and beta-sitosterol have the mass ratio of (2-5): (15-30): (65-75).
In one embodiment, the tocopherol includes one or more of alpha tocopherol, beta tocopherol, gamma tocopherol, and delta tocopherol.
In one embodiment, the mass ratio of alpha tocopherol to beta tocopherol to gamma tocopherol to delta tocopherol is (0-15): (0-10): (55-100): (0-20).
In one embodiment, the mass ratio of alpha tocopherol to beta tocopherol to gamma tocopherol to delta tocopherol is (5-15): (2-5): (65-75): (10-18).
In one embodiment, the mass ratio of alpha tocopherol, beta tocopherol, gamma tocopherol, and delta tocopherol is 10:3:72:15.
in one embodiment, the pour point depressant is selected from one or both of polyalphaolefins and polyacrylates.
In one embodiment, the adjuvant is selected from one or more of chlorophyll, a carotenoid and glycerol.
In one embodiment, the natural ester insulating oil has a fire point of >300 ℃, a flash point of >250 ℃, a breakdown voltage of >60kV, a dielectric loss of <2%, a pour point of < -15 ℃, a 35d biodegradability of >95%, and an acute peroral LD of > 2000mg/kg.
In one embodiment, the natural ester insulating oil has a fire point of not less than 330 ℃, a flash point of not less than 260 ℃, a breakdown voltage of not less than 70kV, a dielectric loss of less than 2%, a pour point of not less than-18 ℃,35d biodegradability of not less than 97%, and acute oral LD50 of more than 2000mg/kg.
Compared with the prior art, the invention has the following beneficial effects:
the invention takes soybean oil as the main component of the insulating liquid. Soybean oil has not only high ignition and flash points but also excellent biodegradability as compared with mineral insulating oil composed of hydrocarbon compounds. However, the soybean oil added into the insulating liquid alone has the problems of poor oxidation stability and high pour point, and is not suitable for being added into the insulating oil alone and is usually mixed with other oils for use. In the invention, tocopherol, sterol, antioxidant T501 and citric acid are used as mixed antioxidants, and the proportions of the antioxidants are adjusted and added into insulating oil which takes soybean oil as a main component. Wherein, the synthetic antioxidant T501 is used as a main antioxidant, the natural antioxidants tocopherol and sterol are used as compound antioxidants, and the citric acid is used as a metal chelating agent. T501 is high in stability, the antioxidant effect is not affected at a certain temperature, and the coloring reaction can not occur when the vegetable oil meets metal ions, so that the oxidative rancidity of the vegetable oil can be effectively delayed. The phenolic hydroxyl groups in the tocopherol are highly prone to loss of H, binding to peroxides, and interrupting the chain process of the oxidation reaction. Increasing the sterol can increase the stability of the sample, since sterols act as synergists for tocopherols. Sterols also contain phenolic hydroxyl groups, and their lost H can bind to the tocopherol radical, acting as a synergistic effect in regenerating tocopherols. The citric acid has a synergistic effect, can further enhance the antioxidant performance of the antioxidant, and can also chelate metal ions and reduce the catalytic effect of the metal ions on oil oxidation. The main component of the soybean oil is triglyceride, a large amount of unsaturated carbon-carbon double bonds exist in the triglyceride, the mixed antioxidant can enable a large amount of unsaturated carbon-carbon double bonds in the soybean oil to be difficult to generate allyl free radical reaction under a specific proportion, the unsaturated carbon-carbon double bonds are effectively prevented from rapidly generating reaction at the initial stage of oxidation reaction, and meanwhile, the effects of eliminating free radicals generated in the oxidation process and decomposing peroxide intermediates can be achieved, namely, the subsequent oxidation reaction is prevented. Meanwhile, the pour point depressant is added into the insulating oil which takes the soybean oil as the main component, and the pour point is effectively improved by destroying the crystallization process of paraffin in the insulating liquid on the premise of not influencing the function of the antioxidant. In addition, the addition of the mixed antioxidant and the additive into the insulating oil taking the soybean oil as the main component does not influence the soybean oil to exert the excellent performances of high ignition point, flash point, biodegradability and the like.
The natural ester insulating liquid has high ignition point and flash point, particularly the ignition point is higher than 300 ℃, the flash point is higher than 250 ℃, the natural ester insulating liquid belongs to K-grade fire-resistant oil, the flash point is more than 2 times of the flash point of the traditional mineral oil insulating oil, and the fire safety is better; the breakdown voltage of the natural ester insulating liquid is higher than 60kV, the dielectric loss is less than 2 percent, the pour point is lower than-15 ℃, and the requirement of the natural ester standard is comprehensively better; the natural ester insulating liquid is non-toxic and harmless, has a biodegradation rate of more than 98 percent in 30 days, can be quickly and automatically degraded, has good environmental protection characteristic, cannot cause pollution to land and water sources, and is suitable for environment-sensitive areas such as water source areas, farmlands, scenic spots, streets and the like.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description taken in conjunction with the accompanying drawings. Preferred embodiments of the present invention are given in the detailed description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Term(s) for
Unless otherwise indicated or contradicted, terms or phrases used herein have the following meanings:
as used herein, the term "and/or", "and/or" includes any one of two or more of the associated listed items, as well as any and all combinations of the associated listed items, including any two of the associated listed items, any more of the associated listed items, or all combinations of the associated listed items.
As used herein, "one or more" refers to any one, any two, or any two or more of the listed items. Wherein "a plurality" means any two or more than two.
As used herein, "a combination thereof," "any combination thereof," and the like, includes all suitable combinations of any two or more of the listed items.
In the present specification, the term "suitable" in "a suitable combination, a suitable manner," any suitable manner "and the like shall be construed to mean that the technical solution of the present invention can be implemented, the technical problem of the present invention can be solved, and the technical effect of the present invention can be achieved.
Herein, "preferred" merely describes a more effective embodiment or example, and it should be understood that the scope of the present invention is not limited thereto.
In the present invention, the technical features described in the open type include a closed technical solution composed of the listed features, and also include an open technical solution including the listed features.
In the present invention, the numerical range is defined to include both endpoints of the numerical range unless otherwise specified.
The percentage contents referred to in the present invention mean, unless otherwise specified, mass percentages for solid-liquid mixing and solid-solid phase mixing, and volume percentages for liquid-liquid phase mixing.
The percentage concentrations referred to in the present invention are, unless otherwise specified, the final concentrations. The final concentration refers to the ratio of the additive component in the system to which the component is added.
The temperature parameter in the present invention is not particularly limited, and may be a constant temperature treatment or a treatment within a certain temperature range. The constant temperature process allows the temperature to fluctuate within the accuracy of the instrument control.
At present, the technology discloses environment-friendly insulating oil taking vegetable oil as raw material, and some prepared environment-friendly insulating oil has high ignition point and flash point but low condensation point (pour point), and some environment-friendly insulating oil has low pour point but low flash point.
Based on the natural ester insulating liquid, the invention provides the natural ester insulating liquid.
The natural ester insulating liquid comprises the following raw materials in percentage by mass:
the antioxidant consists of tocopherol, sterol, antioxidant T501 and citric acid;
the mass ratio of the tocopherol to the sterol to the antioxidant T501 to the citric acid is (0.1-0.5): (0.1-0.5): (0.1-1.0): (0.1-0.5).
The invention takes soybean oil as the main component of the insulating liquid. Soybean oil has not only high ignition and flash points but also excellent biodegradability as compared with mineral insulating oils composed of hydrocarbon compounds. However, the soybean oil added into the insulating liquid alone has the problems of poor oxidation stability and high pour point, and is not suitable for being added into the insulating oil alone and is usually mixed with other oils for use. In the invention, tocopherol, sterol, antioxidant T501 and citric acid are used as mixed antioxidants, and the proportions of the antioxidants are adjusted and added into insulating oil which takes soybean oil as a main component. Wherein, the synthetic antioxidant T501 is used as a main antioxidant, the natural antioxidants tocopherol and sterol are used as compound antioxidants, and the citric acid is used as a metal chelating agent. T501 is high in stability, the antioxidant effect is not affected at a certain temperature, and the coloring reaction can not occur when the oil meets metal ions, so that the oxidative rancidity of the vegetable oil can be effectively delayed. The phenolic hydroxyl groups in tocopherols are highly prone to loss of H, binding to peroxides, and interrupting the chain process of oxidation reactions. Increasing the sterol can increase the stability of the sample, since sterol can act as a synergist for tocopherol. Sterols also contain phenolic hydroxyl groups, and their lost H can bind to the tocopherol radical, acting as a synergistic effect in regenerating tocopherols. The citric acid has a synergistic effect, can further enhance the oxidation resistance of the antioxidant, and can also chelate metal ions and reduce the catalytic effect of the metal ions on oil oxidation. The main component of the soybean oil is triglyceride, a large amount of unsaturated carbon-carbon double bonds exist in the triglyceride, the mixed antioxidant can enable a large amount of unsaturated carbon-carbon double bonds in the soybean oil to be difficult to generate allyl free radical reaction under a specific proportion, the unsaturated carbon-carbon double bonds are effectively prevented from rapidly generating reaction at the initial stage of oxidation reaction, and meanwhile, the effects of eliminating free radicals generated in the oxidation process and decomposing peroxide intermediates can be achieved, namely, the subsequent oxidation reaction is prevented. Meanwhile, the pour point depressant is added into the insulating oil which takes the soybean oil as the main component, and the pour point is effectively improved by destroying the crystallization process of paraffin in the insulating liquid on the premise of not influencing the function of the antioxidant. In addition, the addition of the mixed antioxidant and the additive into the insulating oil taking the soybean oil as the main component does not influence the soybean oil to exert the excellent performances of high ignition point, flash point, biodegradability and the like.
According to the invention, the natural ester insulating liquid is nontoxic, environment-friendly, flame-retardant and excellent in insulating property due to the combined action of the components in the mass percentage, and can be widely applied to electric equipment, such as transformers, cables, switches, capacitors and other electric equipment for the purposes of insulation, cooling and the like.
Preferably, the raw materials for preparing the natural ester insulating liquid comprise, by mass:
preferably, the mass ratio of the tocopherol to the sterol to the antioxidant T501 to the citric acid is (0.1-0.3): (0.25-0.4): (0.3-1.0): (0.1-0.3).
In one embodiment, the raw materials for preparing the natural ester insulating fluid comprise, by mass:
in one preferred embodiment, the raw materials for preparing the natural ester insulating liquid comprise, by mass:
in another preferred embodiment, the raw materials for preparing the natural ester insulating liquid comprise, by mass:
in some preferred embodiments, the sterol is a phytosterol.
In some preferred embodiments, the sterol comprises one or more of campesterol, stigmasterol, and beta-sitosterol.
In some preferred embodiments, the campesterol, stigmasterol and β -sitosterol are present in an amount of (0-10): (0% -40): (50-100).
In some more preferred embodiments, the campesterol, stigmasterol and β -sitosterol are present in an amount of (2-5): (15-30): (65-75).
In one preferred embodiment, the mass of campesterol, stigmasterol and β -sitosterol is 4:28:68..
In another preferred embodiment, the mass of campesterol, stigmasterol and β -sitosterol is 2:25:73.
the key component sterol of the antioxidant in the insulating oil can be composed of campesterol, stigmasterol and beta-sitosterol in a specific proportion, so that the oxidation stability of the insulating liquid is improved, and the comprehensive performance of the insulating liquid is improved.
In some preferred embodiments, the tocopherol includes one or more of alpha tocopherol, beta tocopherol, gamma tocopherol, and delta tocopherol.
In some preferred embodiments, the mass ratio of alpha tocopherol to beta tocopherol to gamma tocopherol to delta tocopherol is (0-15): (0-10): (55-100): (0-20).
In some more preferred embodiments, the mass ratio of alpha tocopherol to beta tocopherol to gamma tocopherol to delta tocopherol is (5-15): (2-5): (65-75): (10-18).
In one preferred embodiment, the mass ratio of the alpha tocopherol to the beta tocopherol to the gamma tocopherol to the delta tocopherol is 10:3:72:15.
in another preferred embodiment, the mass ratio of alpha tocopherol, beta tocopherol, gamma tocopherol and delta tocopherol, in mass percentages, is 13:4:75:13.
in some preferred embodiments, the pour point depressant is selected from one or both of polyalphaolefins and polyacrylates.
In one preferred embodiment, the pour point depressant is a polyalphaolefin.
Specifically, the mass percentages of pour point depressants include, but are not limited to: 0.1%, 0.2%, 0.3%, 0.4%, 0.5%.
In some preferred embodiments, the adjuvant is selected from one or more of chlorophyll, a carotenoid, and glycerol.
In one preferred embodiment, the adjuvant is glycerol.
Specifically, the mass percentages of the adjuvants include, but are not limited to: 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%.
The natural ester insulating fluid of the present invention can be prepared by the following method:
mixing the soybean oil, the antioxidant, the pour point depressant and the auxiliary agent according to the mass percentage to obtain natural ester insulating liquid;
in some preferred embodiments, the prepared natural ester insulating oil has a fire point of >300 ℃, a flash point of >250 ℃, a breakdown voltage of >60kV, a dielectric loss of <2%, a pour point of < -15 ℃, a 35d biodegradability of >95%, and an acute oral LD50 of > 2000mg/kg.
In some more preferred embodiments, the natural ester insulating oil has a fire point of 330 ℃ or higher, a flash point of 260 ℃ or higher, a breakdown voltage of 70kV or higher, a dielectric loss of 2%, a pour point of 18 ℃ or lower, a 35d biodegradability of 97% or higher, and an acute oral LD50 of 2000mg/kg or higher.
In the following, the raw materials referred to in the following specific examples are commercially available, unless otherwise specified, the equipment used, and the processes referred to, unless otherwise specified, are all routinely selected by those skilled in the art.
Example 1
The present embodiment provides a natural ester insulating fluid, which has a specific formulation as shown in table 1, and is prepared through the following steps:
heating 98.1% of soybean oil to 50-60 ℃, adding 0.1% of tocopherol, 0.3% of sterol, 0.6% of antioxidant T501, 0.2% of citric acid, 0.2% of pour point depressant and 0.5% of auxiliary agent, mixing, stirring for 20-30 min, and cooling to room temperature, wherein the tocopherol consists of 10% of alpha tocopherol, 3% of beta tocopherol, 72% of gamma tocopherol and 25% of delta tocopherol, and the sterol consists of 5% of campesterol, 25% of stigmasterol and 70% of beta-sitosterol, thereby preparing the natural ester insulating oil.
TABLE 1
Example 2
This example provides a natural ester insulating fluid, which is prepared according to the following steps:
heating 97.9% of soybean oil to 50-60 ℃, adding 0.2% of tocopherol, 0.4% of sterol, 0.5% of antioxidant T501, 0.1% of citric acid, 0.1% of pour point depressant and 0.8% of auxiliary agent, mixing and stirring for 20-30 min, and cooling to room temperature, wherein the tocopherol consists of 13% of alpha tocopherol, 5% of beta tocopherol, 64% of gamma tocopherol and 18% of delta tocopherol, and the sterol consists of 4% of campesterol, 28% of stigmasterol and 68% of beta-sitosterol to prepare the natural ester insulating oil.
TABLE 2
Example 3
The present embodiment provides a natural ester insulating fluid, whose specific formulation is shown in table 2, and the natural ester insulating fluid is prepared through the following steps:
heating 98.3% of soybean oil to 50-60 ℃, adding 0.15% of tocopherol, 0.35% of sterol, 0.3% of antioxidant T501, 0.2% of citric acid, 0.3% of pour point depressant and 0.4% of auxiliary agent, mixing and stirring for 20-30 min, and cooling to room temperature, wherein the tocopherol consists of 8% of alpha tocopherol, 4% of beta tocopherol, 75% of gamma tocopherol and 13% of delta tocopherol, and the sterol consists of 2% of campesterol, 25% of stigmasterol and 73% of beta-sitosterol to prepare the natural ester insulating oil.
TABLE 3
Example 4
This example provides a natural ester insulating fluid, which has a specific formulation as shown in table 4 and is prepared through the following steps:
heating 98.1% of soybean oil to 50-60 ℃, adding 0.1% of tocopherol, 0.3% of sterol, 0.6% of antioxidant T501, 0.2% of citric acid, 0.2% of pour point depressant and 0.5% of auxiliary agent, mixing and stirring for 20-30 min, and cooling to room temperature, wherein the tocopherol consists of 10% of alpha tocopherol, 5% of beta tocopherol, 65% of gamma tocopherol and 20% of delta tocopherol, and the sterol consists of 5% of campesterol, 25% of stigmasterol and 70% of beta-sitosterol, thereby preparing the natural ester insulating oil.
TABLE 4
Example 5
This example provides a natural ester insulating fluid, whose specific formulation is shown in table 5, and the natural ester insulating fluid is prepared through the following steps:
heating 98.1% of soybean oil to 50-60 ℃, adding 0.1% of tocopherol, 0.3% of sterol, 0.6% of antioxidant T501, 0.2% of citric acid, 0.2% of pour point depressant and 0.5% of auxiliary agent, mixing, stirring for 20-30 min, and cooling to room temperature, wherein the tocopherol consists of 10% of alpha tocopherol, 3% of beta tocopherol, 72% of gamma tocopherol and 25% of delta tocopherol, and the sterol consists of 2% of campesterol, 30% of stigmasterol and 68% of beta-sitosterol, thereby preparing the natural ester insulating oil.
TABLE 5
Comparative example 1
The natural ester insulating fluid of this comparative example, which is substantially the same as example 1, is mainly different from the natural ester insulating fluid of the present example in that sterol is not added, and the specific formulation of the natural ester insulating fluid is shown in table 6, and is prepared by the following steps:
heating 98.1% of soybean oil to 50-60 ℃, adding 0.4% of tocopherol, 0.0% of sterol, 0.6% of antioxidant T501, 0.2% of citric acid, 0.2% of pour point depressant and 0.5% of auxiliary agent, mixing, wherein the tocopherol consists of 10% of alpha tocopherol, 3% of beta tocopherol, 72% of gamma tocopherol and 25% of delta tocopherol, and the sterol consists of 5% of campesterol, 25% of stigmasterol and 70% of beta-sitosterol, and preparing the natural ester insulating oil.
TABLE 6
Comparative example 2
The natural ester insulating fluid of this comparative example, which is substantially the same as example 1, was prepared by the following steps, with the main difference that no pour point depressant was added, as shown in table 7:
the natural ester insulating oil is prepared by mixing, by mass, 98.1% of soybean oil, 0.1% of tocopherol, 0.3% of sterol, 0.6% of antioxidant T501, 0.2% of citric acid, 0.0% of pour point depressant and 0.7% of auxiliary agent, wherein the tocopherol consists of 10% of alpha tocopherol, 3% of beta tocopherol, 72% of gamma tocopherol and 25% of delta tocopherol, and the sterol consists of 5% of campesterol, 25% of stigmasterol and 70% of beta-sitosterol.
TABLE 7
Comparative example 3
The natural ester insulating fluid of this comparative example, which is substantially the same as example 1, is mainly different in that sterol is replaced with a tea polyphenol antioxidant, and the specific formulation of the natural ester insulating fluid is shown in table 8, and is prepared by the following steps:
the natural ester insulating oil is prepared by mixing 98.1% of soybean oil, 0.1% of tocopherol, 0.3% of tea polyphenol, 0.6% of antioxidant T501, 0.2% of citric acid, 0.2% of pour point depressant and 0.5% of auxiliary agent in percentage by mass, wherein the tocopherol consists of 10% of alpha tocopherol, 3% of beta tocopherol, 72% of gamma tocopherol and 25% of delta tocopherol, and the sterol consists of 5% of campesterol, 25% of stigmasterol and 70% of beta-sitosterol.
TABLE 8
Performance testing
1. Ignition point: the ignition point of the petroleum product is determined by adopting a GB/T3536-2008 standard;
2. flash point: measuring by adopting a GB/T261-2008 standard Binski-Martin closed cup method;
3. breakdown voltage: the breakdown voltage of the insulating oil of GB/T507-2002 standard is adopted for determination;
4. dielectric loss: measuring and determining the relative permittivity, dielectric loss factor and direct current resistivity of the GB/T5654 liquid insulating material;
5. pour point: measuring by adopting a petroleum product pour point method of GB/T3535-2006 standard;
6. biodegradability: the method is characterized by comprising the following steps of (1) measuring by adopting a GB/T21856-2008 standard chemical rapid biodegradability carbon dioxide generation test method;
7. acute oral toxicity: the determination is carried out by adopting a chemical acute oral fixed metering test method of GB/T21804-2008 standard;
8. oxidation stability: measured by an oxidation stability measurement method of hydrocarbon insulating oil which is not used in NB/SH/T0811, but the aging time is 48 hours.
The natural ester insulating fluids of examples 1 to 5 and comparative examples 1 to 3 were tested, and the results are shown in tables 9 and 10;
tables 9 to 10 show the physical and chemical properties and electrical properties of the natural ester insulating fluids in the examples and comparative examples. Wherein, the ignition point of the natural ester insulating liquid in the examples 1-5 is more than or equal to 330 ℃, the flash point is more than or equal to 260 ℃, the breakdown voltage is more than or equal to 70kV, the dielectric loss is less than 2%, the pour point is less than or equal to-18 ℃, the 35d biodegradability is more than or equal to 97%, and the acute oral LD50 is more than 2000mg/kg. The application describes that a non-toxic, environment-friendly and flame-retardant natural ester insulating liquid is obtained through the interaction among the soybean oil, the antioxidant, the pour point depressant and other components. In comparative example 1, since sterol was not added, the antioxidant ability of tocopherol in the natural ester insulating oil was decreased, and the acid value and dielectric loss increased after the oxidation stability test, indicating that sterol had a synergistic effect on tocopherol. In comparative example 2, since the pour point of the natural ester became high without addition of the pour point depressant, it was demonstrated that the addition of the pour point depressant improves the low temperature fluidity of the natural ester and lowers the pour point. In comparative example 3, it was found that the acid value and dielectric loss kinematic viscosity increased after the oxidation stability test using PG against oxygen and replacing sterols, indicating that the addition of PG negatively affects the antioxidant capacity of the natural esters of the modified formula.
TABLE 9
Watch 10
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be defined by the appended claims.
Claims (10)
1. The natural ester insulating fluid is characterized in that the preparation raw materials of the natural ester insulating fluid comprise, by mass:
97.9 to 98.1 percent of soybean oil,
0.1 to 0.2 percent of tocopherol,
0.3 to 0.4 percent of sterol,
T501 0.5%-0.6%、
0.1 to 0.2 percent of citric acid,
0.1 to 0.2 percent of pour point depressant,
0.5 to 0.8 percent of auxiliary agent;
the tocopherol, the sterol, the T501 and the citric acid form an antioxidant.
2. The natural ester insulating fluid according to claim 1, wherein the sterol is a phytosterol.
3. The natural ester insulation of claim 2, wherein the sterol comprises one or more of campesterol, stigmasterol, and β -sitosterol.
4. The natural ester insulating fluid according to claim 3, wherein the campesterol, stigmasterol and β -sitosterol are in a mass ratio of (0-10): (0-40): (50-100).
5. The natural ester insulating fluid according to claim 4, wherein the campesterol, stigmasterol and β -sitosterol are in a mass ratio of (2-5): (15-30): (65-75).
6. The natural ester insulation fluid of any of claims 1 to 5 wherein the tocopherol comprises one or more of alpha tocopherol, beta tocopherol, gamma tocopherol, and delta tocopherol.
7. The natural ester insulating fluid of claim 6, wherein the mass ratio of the alpha tocopherol, the beta tocopherol, the gamma tocopherol, and the delta tocopherol is (0-15): (0-10): (55-100): (0-20).
8. The natural ester insulating fluid of claim 7, wherein the mass ratio of alpha tocopherol, beta tocopherol, gamma tocopherol, and delta tocopherol is (5-15): (2-5): (65-75): (10-18).
9. The natural ester insulation fluid of any of claims 1 to 5, wherein the pour point depressant is selected from one or both of polyalphaolefins and polyacrylates; and/or
The adjuvant is selected from one or more of chlorophyll, carotenoid and glycerol.
10. The natural ester insulation of claim 9 wherein the pour point depressant is a polyalphaolefin; and/or
The adjuvant is glycerol.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5958851A (en) * | 1998-05-11 | 1999-09-28 | Waverly Light And Power | Soybean based transformer oil and transmission line fluid |
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| US9240259B2 (en) * | 2011-10-07 | 2016-01-19 | E I Du Pont De Nemours And Company | Liquid compositions used as insulating and heat transfer means, electrical devices containing said compositions and preparation method for such compositions |
| CN102682869B (en) * | 2012-04-11 | 2015-01-07 | 中国电力科学研究院 | Preparation method of vegetable insulating oil |
| CN107680712B (en) * | 2017-09-27 | 2020-05-19 | 武汉泽电新材料有限公司 | Compound antioxidant for natural ester insulating oil and application thereof |
| CN111704953A (en) * | 2020-06-18 | 2020-09-25 | 中国石油化工股份有限公司 | Biodegradable high-ignition-point insulating oil and preparation method thereof |
| CN112195058A (en) * | 2020-09-01 | 2021-01-08 | 中铁第一勘察设计院集团有限公司 | Anti-gassing natural ester insulating oil and preparation method thereof |
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