CN103881047B - Polyurethane potting material of high-insulativity hydrolysis and preparation method thereof - Google Patents
Polyurethane potting material of high-insulativity hydrolysis and preparation method thereof Download PDFInfo
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- CN103881047B CN103881047B CN201410080983.4A CN201410080983A CN103881047B CN 103881047 B CN103881047 B CN 103881047B CN 201410080983 A CN201410080983 A CN 201410080983A CN 103881047 B CN103881047 B CN 103881047B
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- potting material
- insulativity
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- 239000000463 material Substances 0.000 title claims abstract description 57
- 239000004814 polyurethane Substances 0.000 title claims abstract description 49
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 49
- 238000004382 potting Methods 0.000 title claims abstract description 41
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 24
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000004359 castor oil Substances 0.000 claims abstract description 24
- 235000019438 castor oil Nutrition 0.000 claims abstract description 24
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 24
- 239000004970 Chain extender Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 15
- 239000013530 defoamer Substances 0.000 claims abstract description 13
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 12
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 12
- 229920001451 polypropylene glycol Polymers 0.000 claims description 25
- 239000002585 base Substances 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 14
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 14
- -1 dibutyl tin dilaurate ester Chemical class 0.000 claims description 13
- 239000002808 molecular sieve Substances 0.000 claims description 13
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000012948 isocyanate Substances 0.000 claims description 7
- 150000002513 isocyanates Chemical class 0.000 claims description 7
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical group C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 4
- 101000598921 Homo sapiens Orexin Proteins 0.000 claims description 3
- 101001123245 Homo sapiens Protoporphyrinogen oxidase Proteins 0.000 claims description 3
- 102100029028 Protoporphyrinogen oxidase Human genes 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- BJZYYSAMLOBSDY-QMMMGPOBSA-N (2s)-2-butoxybutan-1-ol Chemical compound CCCCO[C@@H](CC)CO BJZYYSAMLOBSDY-QMMMGPOBSA-N 0.000 claims description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 2
- AXPZIVKEZRHGAS-UHFFFAOYSA-N 3-benzyl-5-[(2-nitrophenoxy)methyl]oxolan-2-one Chemical compound [O-][N+](=O)C1=CC=CC=C1OCC1OC(=O)C(CC=2C=CC=CC=2)C1 AXPZIVKEZRHGAS-UHFFFAOYSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- 150000001412 amines Chemical group 0.000 claims description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 2
- 239000010428 baryte Substances 0.000 claims description 2
- 229910052601 baryte Inorganic materials 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 229910052570 clay Inorganic materials 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 2
- 229940043237 diethanolamine Drugs 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 claims description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- CZIRZNRQHFVCDZ-UHFFFAOYSA-L titan yellow Chemical compound [Na+].[Na+].C1=C(C)C(S([O-])(=O)=O)=C2SC(C3=CC=C(C=C3)/N=N/NC3=CC=C(C=C3)C3=NC4=CC=C(C(=C4S3)S([O-])(=O)=O)C)=NC2=C1 CZIRZNRQHFVCDZ-UHFFFAOYSA-L 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 229960001777 castor oil Drugs 0.000 claims 4
- 239000011521 glass Substances 0.000 claims 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims 1
- 239000010773 plant oil Substances 0.000 claims 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010292 electrical insulation Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical group NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical class CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- LNDKRVOOYMEYTC-UHFFFAOYSA-N buta-1,3-dien-1-ol Chemical compound OC=CC=C LNDKRVOOYMEYTC-UHFFFAOYSA-N 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 150000002440 hydroxy compounds Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- DGTNSSLYPYDJGL-UHFFFAOYSA-N phenyl isocyanate Chemical compound O=C=NC1=CC=CC=C1 DGTNSSLYPYDJGL-UHFFFAOYSA-N 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical class CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6696—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention discloses polyurethane potting material of a kind of high-insulativity hydrolysis and preparation method thereof; Described polyurethane potting material is two components; With weight percent content metering composition, A component is by 40%～50% castor oil, 3%～5.5% PPG, 0.5%～2% chain extender, 5%～12% drier, 37%～44% filler, 0.02%～0.1% catalyst, 0.1% yellow mill base, 0.1% defoamer composition; B component is the polyisocyanates of 1 () () %. Embedding Material modest viscosity provided by the invention, can normal temperature cure, and bubble is few, and outward appearance is beautiful, and change hardening time with the consumption of catalyst, is convenient to adjust; After material cured, have good electrical insulating property, hydrolytic resistance, hot strength are high; Be applicable to the southern china of underground high voltage cable joint, outdoor high-voltage cable connector, the embedding protection in the hot and humid environments such as Southeast Asia.
Description
Technical field
The present invention relates to polyurethane potting material, be specifically related to a kind of high-insulativity hydrolysis polyurethane potting material andPreparation method.
Background technology
Polyurethane potting material: polyurethane full name is polyurethanes is on main chain, to contain repetition carbamate groups(NHC00-) general designation of macromolecular compound, it is by organic diisocyanate or polyisocyanates and dihydroxy or many hydroxylsBased compound, and little molecular polylol or polyamine be that chain extender addition polymerization forms, hydroxy compounds is mainly by polyester, poly-The polymer compositions such as ether and terminal hydroxy group poly double-olefin. Polyurethane potting material has excellent electrical insulating property, and its cohesive energy is large,Very strong because containing polarity, the NCO that chemical activity is very high and urethano, therefore it is to the various bases that contain active hydrogenMaterial has good chemical adhesive power, as metal, and timber. Regulate soft section and hard section ratio and structure in polyurethane molecular chain,Make the potting compound of different hardness and percentage elongation. In the low product of hardness requirement, polyurethane surface reveals good pliability,Lower temperature resistance, shock resistance. Polyurethane filling material is solvent-free, mobility excellence, and viscosity is low, and it is convenient to mix, can room temperatureSolidify, even low temperature environment also can solidify, and has solved product outdoor study environmental limit under this situation.
By the retrieval to existing document, find that Chinese patent CN102010588B discloses a kind of low-viscosity polyurethane and filled withEnvelope material and its production and use. A component by 60%～80% castor oil, 0%～20% PPG, 10%～20% fire retardant, 3%～4% coupling agent, 0.1%～1% thixotropic agent and 0.01%～0.1% catalyst composition, AComponent material viscosity is 100～400mPa.s; B component is by 50%～70% polyisocyanates and 30～50% plasticizerComposition, the viscosity of B component is 30～100mPa.s. A, after B component removes respectively water, 50:100 mixing is equal in mass ratioEven, after normal temperature cure, material is transparent, fire-retardant, has good insulation properties, moisture resistance, mechanical property. Applicable washing machine,The wiring board using under the high humidity environment such as dish-washing machine, water meter or the embedding of screen protection. It is a kind of transparent that this invention providesEmbedding Material, owing to having added plasticizer, electrical insulating property is on the low side, and hot strength is low.
Chinese patent CN101210167A discloses a kind of polyurethane sealing pouring adhesive, A component by end hydroxy butadiene 60%～80%, diluent 10%～25% and carbon black 5%～15%; B component is by the methyl diphenylene diisocyanate that liquefies (MDI)80%～95%, catalyst 5%～20%. The polyurethane sealing pouring adhesive cast viscosity of this invention is low, good leveling property, the gas of formationHole is few. But catalyst is added in B component (MDI system), there is the risk of storage life and result of use, andThe amount adding is very large, and reaction speed is too fast, and the operating time is short, higher to cast librarian use product requirement.
Summary of the invention
The object of the invention is to overcome the deficiency that above-mentioned prior art exists, the poly-of a kind of high-insulativity hydrolysis is providedAmmonia ester Embedding Material and preparation method thereof. This polyurethane potting material is applicable to high-voltage cable joint, and its dielectric strength is high,Water absorption rate is low, and hot strength is high, and hydrolytic resistance is strong, is applicable to use under hot and humid environment.
The object of the invention is to be achieved through the following technical solutions:
First aspect, the present invention relates to a kind of polyurethane potting material of high-insulativity hydrolysis, described encapsulating polyurethane materialMaterial is two components; With weight percent content metering composition, A component by 40%～50% castor oil, 3%～5.5% poly-Ethoxylated polyhydric alcohol, 0.5%～2% chain extender, 5%～12% drier, 37%～44% filler, 0.02%～0.1% urgeAgent, 0.1% yellow mill base, 0.1% defoamer composition; B component is 100% polyisocyanates.
Preferably, described castor oil is one-level refining castor oil, and its hydroxyl value is 160～170mgKOH/g.
Preferably, described PPG be selected from polyoxypropyleneglycol, PPOX triol, PTMG,One or more in polyethylene glycol, polypropylene glycol.
Preferably, the hydroxyl value of described PPG is 1 () ()～120mgKOH/g.
More preferably the polyoxypropyleneglycol that hydroxyl value is 110mgKOH/g. Its source, market is wide, and viscosity is lower, with isocyanic acidThe ehter bond (0-) forming after ester reaction has good hydrolytic resistance.
Preferably, described chain extender is one or more in small molecule alcohol chain extender, amine chain extender.
Preferably, described chain extender be selected from 1,2-PD, 1,3-PD, 1,3-BDO, BDO,1,5-PD, 1,6-hexylene glycol, neopentyl glycol, trimethylolpropane, glycerine, monoethanolamine, diethanol amine,One or more in triethanolamine, triisopropanolamine. More preferably 1,2-PD, BDO. 1,2-Structure after propane diols and BDO and isocyanate reaction is more regular, is beneficial to the insulating properties and the stretching that improve productIntensity.
Preferably, described drier is selected from the one in zeolite powder, 3A type molecular sieve, 4A type molecular sieve, 5A type molecular sieveOr several. More preferably 4A type molecular sieve. 4A type molecular sieve cost performance is high, the moisture in can well absorbing products.
Preferably, it is micro-that described filler is selected from calcium carbonate, silica flour, titanium dioxide, potter's clay, barite, talcum powder, glassOne or more in pearl.
Preferably, the granular size of described filler is 5～25 μ m.
More preferably granular size is the calcium carbonate of 18 μ m. The calcium carbonate of this particle diameter has good mixed effect, and price is lowHonest and clean.
Preferably, described catalyst is selected from triethylenediamine, triethylamine, stannous octoate, dibutyl tin dilaurate esterIn one or more. More preferably stannous octoate. Stannous octoate toxicity is lower slightly, and source, market is wide, and catalytic effect is superior.
Preferably, described defoamer is selected from one or more in polysiloxanes, modified polyorganosiloxane. More preferably poly-silicaAlkane. Source, polysiloxanes market is wide, cheap.
Preferably, described yellow mill base is that titan yellow is the mill base of class.
Preferably, described polyisocyanates is selected from methyl diphenylene diisocyanate (MDI), polymethylene polyphenyl is differentOne or more in cyanate (thick MDI), Carbodiimide-Modified MDI (liquefied mdi). More preferably polymethyleneMany phenyl isocyanate (thick MDI). Polymethylene multi-phenenyl isocyanate (thick MDI) reactivity is large, easily mixes.
Preferably, the mass ratio of described A, B component is 100:(10～30).
Second aspect, the invention still further relates to the preparation side of the polyurethane potting material of the high-insulativity hydrolysis that a kind of money statesMethod, described method comprises the steps:
A component preparation: by described filler at 120 DEG C more than preliminary drying 24h; By described castor oil, PPG, expansionChain agent adds in reaction vessel, and 80 DEG C～110 DEG C vacuumize dehydration 1～2h, then adds described catalyst, filler, dryAgent, yellow mill base, defoamer mix, vacuumizing and defoaming, and discharging;
The preparation of B component: at 10 DEG C～25 DEG C, described polyisocyanates vacuum stirring 0.5～1h, discharging.
The third aspect, the polyurethane potting material that the invention still further relates to the high-insulativity hydrolysis that a kind of money states for the preparation ofPurposes in the Embedding Material of embedding protection cable connector.
Preferably, described cable connector is the high-voltage cable joint using under hot and humid environment.
The present invention is with castor oil, and PPG is primary raw material, adds suitable chain extender, drier, and filler,Catalyst, yellow mill base, defoamer makes polyurethane potting material. When polyurethane potting material of the present invention uses, willA, B component mixes according to mass ratio at 100: 20, also can use vacuum equipment to carry out deaeration processing, then will mixMaterial is cast in high-voltage cable joint place, and normal temperature is low-temperature setting even, and after solidifying, material hardness is Shao Shi 75～95A,Hot strength >=4.5Mpa, percentage elongation >=80%, dielectric loss≤0.02, dielectric constant >=5.0, specific insulation >=1×1015Ω .cm, breakdown strength >=20KV/mm, water absorption rate≤0.1%, in 90 DEG C of hot water, soak 28 days breakdown strengths >=18KV/mm, specific insulation >=1 × 1014Ω.cm。
Compared with prior art, the present invention has following beneficial effect:
1, the present invention passes through to use castor oil, PPG, and chain extender and polyisocyanates solidify, solvent-free, nothingPlasticizer, can reach outstanding insulating properties; Add molecular sieve type drier, there is good water adsorption function,Thereby make solidfied material still can keep good electrical insulating property in hot and humid condition, anti-hydrolytic performance is strong.
2, Embedding Material modest viscosity provided by the invention, can normal temperature cure, and bubble is few, and outward appearance is beautiful, while solidifyingBetween change with the consumption of catalyst, be convenient to adjust; After material cured, there is good electrical insulating property, hydrolytic resistance, stretchingIntensity is high; The southern china that is applicable to underground high voltage cable joint, outdoor high-voltage cable connector, Southeast Asia etc. are hot and humidEmbedding protection in environment.
3,, from raw material angle, castor oil, PPG that the present invention selects are all hydrophobic class raw materials, and polyethers is manyUnit's alcohol hydrolytic resistance excellence, then add the auxiliary agents such as drier, thus there is outstanding hydrolytic resistance; In formula, do not addThe material of any solvent, plasticizer equal loss material electrical property, not only environmental protection but also easy construction.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail. Following examples will contribute to the technology people of this areaMember further understands the present invention, but does not limit in any form the present invention. It should be pointed out that the common skill to this areaArt personnel, without departing from the inventive concept of the premise, can also make some distortion and improvement. These all belong toProtection scope of the present invention.
Embodiment 1
The present embodiment relates to a kind of polyurethane potting material of high-insulativity hydrolysis; This polyurethane potting material is two groupsPart; Wherein, with weight percent content metering composition, A component is by 44% castor oil, 3.5% PPG, 1%Chain extender, 7.25% drier, 44% filler, 0.05% catalyst, 0.1% yellow mill base, 0.1% disappearInfusion composition; B component is 100% polyisocyanates.
The preparation method of the polyurethane potting material of the present embodiment is specific as follows:
A component: take castor oil (hydroxyl value 162mgKOH/g) 44kg in the stirred tank of 150L, polyoxypropyleneglycol(hydroxyl value 110mgKOH/g) 3.5kg and 1,2 propane diols 1kg stir 2h at 120 DEG C, (the vacuum of vacuum outgas simultaneouslyPressure-0.1Mpa); Add defoamer 0.1kg, stannous octoate 0.05kg stirs 0.5h, then adds 4A molecular sieve 7.25kg,Yellow mill base 0.1kg, calcium carbonate (after 120 DEG C of 24h of preliminary drying) 44kg, stirs 1h, (the vacuum pressure of vacuum outgas simultaneously-0.1Mpa), discharging.
B component: select polymethylene multi-phenenyl isocyanate (thick MDI) vacuum outgas (Vacuum Pressure at 10 DEG C～25 DEG CPower-0.1Mpa) 0.5h, discharging.
By the 100:20 mixing in mass ratio of AB component, sample preparation is cast in cable connector place or mould, at normal temperature (25 DEG C)Condition is solidified 3 days, test sample mechanical performance, electrical insulation capability, anti-hydrolytic performance.
Embodiment 2
The present embodiment relates to a kind of polyurethane potting material of high-insulativity hydrolysis; This polyurethane potting material is two groupsPart; Wherein, with weight percent content metering composition, A component is by 45.5% castor oil, 3% PPG, 1.5%Chain extender, 10% drier, 39.78% filler, 0.02% catalyst, 0.1% yellow mill base, 0.1% disappearInfusion composition; B component is 100% polyisocyanates.
The preparation method of the polyurethane potting material of the present embodiment is specific as follows:
A component: take castor oil (hydroxyl value 162mgKOH/g) 45.5kg in the stirred tank of 150L, PPOX threeAlcohol (hydroxyl value 110mgKOH/g) 3kg and Isosorbide-5-Nitrae butanediol 1.5kg stir 1.5h at 120 DEG C, and vacuum outgas is simultaneously (truePneumatics power-0.1Mpa); Add defoamer 0.1kg, stannous octoate 0.02kg stirs 0.5h, then adds 4A molecular sieve 10kg,Yellow mill base 0.1kg, silicon powder (after 120 DEG C of 24h of preliminary drying) 39.78kg, stirs 1h, (the Vacuum Pressure of vacuum outgas simultaneouslyPower-0.1Mpa), discharging.
B component: select Carbodiimide-Modified MDI (liquefied mdi) vacuum outgas (vacuum pressure at 10 DEG C～25 DEG C-0.1Mpa) 0.5h, discharging.
By the 100:20 mixing in mass ratio of AB component, sample preparation is cast in cable connector place or mould, at normal temperature (25 DEG C)Condition is solidified 3 days, test sample mechanical performance, electrical insulation capability, anti-hydrolytic performance.
Embodiment 3
The present embodiment relates to a kind of polyurethane potting material of high-insulativity hydrolysis; This polyurethane potting material is two groupsPart; Wherein, with weight percent content metering composition, A component is by 50% castor oil, 2% PPG, 2%Chain extender, 6.5% drier, 39.2% filler, 0.1% catalyst, 0.1% yellow mill base, 0.1% froth breakingAgent composition; B component is 100% polyisocyanates.
The preparation method of the polyurethane potting material of the present embodiment is specific as follows:
A component: take castor oil (hydroxyl value 162mgKOH/g) 50kg in the stirred tank of 150L, polypropylene glycol (hydroxyl value110mgKOH/g) 2kg and trimethylolpropane 2kg stir 2h at 120 DEG C, (the vacuum pressure of vacuum outgas simultaneously-0.1Mpa); Add defoamer 0.1kg, stannous octoate 0.1kg stirs 0.5h, then adds 4A molecular sieve 6.5kg, yellowMill base 0.1kg, talcum powder (after 120 DEG C of 24h of preliminary drying) 39.2kg, stirs 1h, (the vacuum pressure of vacuum outgas simultaneously-0.1Mpa), discharging.
B component: select polymethylene multi-phenenyl isocyanate (thick MDI) vacuum outgas (Vacuum Pressure at 10 DEG C～25 DEG CPower-0.1Mpa) 0.5h, discharging.
By the 100:20 mixing in mass ratio of AB component, sample preparation is cast in cable connector place or mould, at normal temperature (25 DEG C)Condition is solidified 3 days, test sample mechanical performance, electrical insulation capability, anti-hydrolytic performance.
Comparative example 1
This comparative example relates to a kind of polyurethane potting material, and its preparation method is with embodiment 3, and institute's difference is:
In A component, do not comprise the PPGs such as polypropylene glycol.
A component: in the stirred tank of 150L, take castor oil (hydroxyl value 162mgKOH/g) 52kg, trimethylolpropane 2kg,At 120 DEG C, stir 2h, vacuum outgas simultaneously (vacuum pressure-0.1Mpa); Add defoamer 0.1kg, stannous octoate0.1kg stirs 0.5h, then adds 4A molecular sieve 6.5kg, yellow mill base 0.1kg, talcum powder (after 120 DEG C of 24h of preliminary drying)39.2kg, stirs 1h, vacuum outgas simultaneously (vacuum pressure-0.1Mpa), discharging.
B component: select polymethylene multi-phenenyl isocyanate (thick MDI) vacuum outgas (Vacuum Pressure at 10 DEG C～25 DEG CPower-0.1Mpa) 0.5h, discharging.
By the 100:20 mixing in mass ratio of AB component, sample preparation is cast in cable connector place or mould, at normal temperature (25 DEG C)Condition is solidified 3 days, test sample mechanical performance, electrical insulation capability, anti-hydrolytic performance.
Comparative example 2
This comparative example relates to a kind of polyurethane potting material, and its preparation method is with embodiment 3, and institute's difference is:
In A component, do not comprise the chain extenders such as trimethylolpropane.
A component: in the stirred tank of 150L, take castor oil (hydroxyl value 162mgKOH/g) 52kg, polypropylene glycol 2kg,At 120 DEG C, stir 2h, vacuum outgas simultaneously (vacuum pressure-0.1Mpa); Add defoamer 0.1kg, stannous octoate 0.1kgStir 0.5h, then add 4A molecular sieve 6.5kg, yellow mill base 0.1kg, talcum powder (after 120 DEG C of 24h of preliminary drying) 39.2kg,Stir 1h, vacuum outgas simultaneously (vacuum pressure-0.1Mpa), discharging.
B component: select polymethylene multi-phenenyl isocyanate (thick MDI) vacuum outgas (Vacuum Pressure at 10 DEG C～25 DEG CPower-0.1Mpa) 0.5h, discharging.
By the 100:20 mixing in mass ratio of AB component, sample preparation is cast in cable connector place or mould, at normal temperature (25 DEG C)Condition is solidified 3 days, test sample mechanical performance, electrical insulation capability, anti-hydrolytic performance.
The test performance result of embodiment 1～3 and comparative example 1,2 is as shown in table 1:
Table 1
By embodiment in table 11,2,3 and comparative example 1,2 relatively, castor oil and PPG, chain extender wherein itThe formula of one composition, then add the auxiliary agents such as drier, catalyst, defoamer, mill base, its hot strength, electrical insulating propertyCan all decrease, and hydrolytic resistance is also lost.
In sum, the present invention is with primary raw materials such as castor oil, PPG, chain extenders, then adds drier, urgesThe auxiliary agents such as agent, can reach outstanding electrical insulating property, hydrolytic resistance, higher hot strength. From raw material angle,Castor oil, PPG are all hydrophobic class raw materials, and PPG hydrolytic resistance excellence, then add drier etc. and helpAgent, thus outstanding hydrolytic resistance there is; In formula, do not add any solvent, plasticizer equal loss material electrical propertyMaterial, not only environmental protection but also easy construction. Along with urbanization process is accelerated, the construction of subway is increasing, and each large mining industryDevelopment and exploitation, more and more higher to the requirement of high-tension cable industry, the cable in existing city is all underground by being buried in,Reach economical and beautiful effect. Polyurethane potting material of the present invention meets the demand of modern urbanization and modern industry, willWide sending out is applied in high-tension cable industry.
Above specific embodiments of the invention are described. It will be appreciated that, the present invention is not limited to above-mentioned spyDetermine embodiment, those skilled in the art can make various distortion or amendment within the scope of the claims, and this is shadow notRing flesh and blood of the present invention.
Claims (14)
1. a polyurethane potting material for high-insulativity hydrolysis, is characterized in that, described polyurethane potting material isTwo components; With weight percent content metering composition, A component is many by 40%～50% castor oil, 3%～5.5% polyethersUnit's alcohol, 0.5%～2% chain extender, 5%～12% drier, 37%～44% filler, 0.02%～0.1% catalyst,0.1% yellow mill base, 0.1% defoamer composition; B component is 100% polyisocyanates;
Described drier is selected from zeolite powder, 3A type molecular sieve, 4A type molecular sieve, 5A type molecular sieve;
Described filler is selected from calcium carbonate, silica flour, titanium dioxide, potter's clay, barite, talcum powder, glass microballoon; DescribedThe granular size of filler is 5～25 μ m.
2. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 1, is characterized in that, described castor-oil plantOil is one-level refining castor oil, and its hydroxyl value is 160～170mgKOH/g.
3. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 1, is characterized in that, described polyethersPolyalcohol is selected from polyoxypropyleneglycol, PPOX triol, PTMG, polyethylene glycol, polypropylene glycol.
4. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 3, is characterized in that, described polyethersThe hydroxyl value of polyalcohol is 100～120mgKOH/g.
5. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 1, is characterized in that, described chain extensionAgent is one or more in small molecule alcohol chain extender, amine chain extender.
6. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 5, is characterized in that, described chain extensionAgent is selected from 1,2-PD, 1,3-PD, 1,3-BDO, BDO, 1,5-PD, 1,6-Hexylene glycol, neopentyl glycol, trimethylolpropane, glycerine, monoethanolamine, diethanol amine, triethanolamine, three isopropyl alcoholsAmine.
7. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 1, is characterized in that, described catalysisAgent is selected from triethylenediamine, triethylamine, stannous octoate, dibutyl tin dilaurate ester.
8. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 1, is characterized in that, described froth breakingAgent is selected from polysiloxanes, modified polyorganosiloxane.
9. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 1, is characterized in that, described yellowMill base is that titan yellow is the mill base of class.
10. the polyurethane potting material of high-insulativity hydrolysis as claimed in claim 1, is characterized in that, described manyIsocyanates is selected from methyl diphenylene diisocyanate, polymethylene multi-phenenyl isocyanate, Carbodiimide-Modified MDI.
The polyurethane potting material of 11. high-insulativity hydrolysis as claimed in claim 1, is characterized in that, described A,The mass ratio of B component is 100:(10～30).
The preparation method of the polyurethane potting material of 12. 1 kinds of high-insulativity hydrolysis as claimed in claim 1, its spyLevy and be, described method comprises the steps:
A component preparation: by described filler at 120 DEG C more than preliminary drying 24h; By described castor oil, PPG, expansionChain agent adds in reaction vessel, and 80 DEG C～110 DEG C vacuumize dehydration 1～2h, then adds described catalyst, filler, dryAgent, yellow mill base, defoamer mix, vacuumizing and defoaming, and discharging;
The preparation of B component: at 10 DEG C～25 DEG C, described polyisocyanates vacuum stirring 0.5～1h, discharging.
The polyurethane potting material of 13. 1 kinds of high-insulativity hydrolysis as claimed in claim 1 is being protected for the preparation of embeddingProtect the purposes in the Embedding Material of cable connector.
14. purposes as claimed in claim 13, is characterized in that, described cable connector for to make under hot and humid environmentWith high-voltage cable joint.
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| HUE042439T2 (en) * | 2014-08-28 | 2019-06-28 | Basf Se | Anti-aging polyurethane seal |
| CN105820793B (en) * | 2016-05-24 | 2017-12-12 | 吉林省泽希科技发展有限公司 | A kind of intumescent two-component fireproof seal gum and preparation method thereof |
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| CN109517138B (en) * | 2018-11-21 | 2021-04-23 | 苏州九维电气制造有限公司 | Polyurethane casting resin and preparation method thereof |
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| CN109734870B (en) * | 2018-12-26 | 2021-09-28 | 哈尔滨工程大学 | Preparation method of water-resistant pressure-resistant plugging material |
| CN110185004B (en) * | 2019-05-29 | 2020-06-12 | 中国电建集团成都勘测设计研究院有限公司 | Concrete face rockfill dam void treatment method |
| CN111119750B (en) * | 2020-02-25 | 2022-03-15 | 刘世江 | Wax removal and prevention oil pipe unit, wax removal and prevention oil pipe and preparation method of wax removal and prevention oil pipe unit |
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| CN112375202A (en) * | 2020-11-30 | 2021-02-19 | 山东一诺威聚氨酯股份有限公司 | Thermoplastic polyurethane elastomer for light guide strip and preparation method thereof |
| CN113088237B (en) * | 2021-05-25 | 2022-12-02 | 长兴圣凯利新材料有限公司 | Environment-friendly high-performance polyurethane pouring sealant and preparation method thereof |
| CN114262596A (en) * | 2021-12-24 | 2022-04-01 | 石家庄银河微波技术有限公司 | Polyurethane AB encapsulating material and production process thereof |
| CN114316201B (en) * | 2022-01-27 | 2023-12-22 | 浙江天和树脂有限公司 | Two-component polyurethane resin system |
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