CN114836041A - Composite insulator rubber compound and preparation method and application thereof - Google Patents
Composite insulator rubber compound and preparation method and application thereof Download PDFInfo
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- CN114836041A CN114836041A CN202210674840.0A CN202210674840A CN114836041A CN 114836041 A CN114836041 A CN 114836041A CN 202210674840 A CN202210674840 A CN 202210674840A CN 114836041 A CN114836041 A CN 114836041A
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- silicone oil
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- phenyl silicone
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- 239000012212 insulator Substances 0.000 title claims abstract description 54
- 150000001875 compounds Chemical class 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 229920001971 elastomer Polymers 0.000 title claims abstract description 32
- 239000005060 rubber Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 116
- 229920002545 silicone oil Polymers 0.000 claims abstract description 112
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 37
- 239000001257 hydrogen Substances 0.000 claims abstract description 37
- -1 phenyl vinyl Chemical group 0.000 claims abstract description 30
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 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 claims abstract description 24
- 239000003063 flame retardant Substances 0.000 claims abstract description 24
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000006229 carbon black Substances 0.000 claims abstract description 19
- 229920002050 silicone resin Polymers 0.000 claims abstract description 19
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002683 reaction inhibitor Substances 0.000 claims abstract description 11
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000006082 mold release agent Substances 0.000 claims abstract description 7
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 125000004430 oxygen atom Chemical group O* 0.000 claims abstract description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 47
- 239000004945 silicone rubber Substances 0.000 claims description 47
- 239000007788 liquid Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 26
- 238000006459 hydrosilylation reaction Methods 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 9
- 229920002554 vinyl polymer Polymers 0.000 claims description 8
- 239000007822 coupling agent Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 6
- 239000000347 magnesium hydroxide Substances 0.000 claims description 6
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 6
- 229910052582 BN Inorganic materials 0.000 claims description 5
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 5
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 claims description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- BUEPLEYBAVCXJE-UHFFFAOYSA-N [ethenyl-methyl-(trimethylsilylamino)silyl]ethene Chemical group C(=C)[Si](N[Si](C)(C)C)(C=C)C BUEPLEYBAVCXJE-UHFFFAOYSA-N 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- 229910001938 gadolinium oxide Inorganic materials 0.000 claims description 2
- 229940075613 gadolinium oxide Drugs 0.000 claims description 2
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical class CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 claims description 2
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 239000012774 insulation material Substances 0.000 claims 1
- 239000003607 modifier Substances 0.000 claims 1
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical class N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 239000011810 insulating material Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 2
- 229920003051 synthetic elastomer Polymers 0.000 abstract description 2
- 239000005061 synthetic rubber Substances 0.000 abstract description 2
- 238000004073 vulcanization Methods 0.000 description 14
- 230000007547 defect Effects 0.000 description 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 6
- 150000002978 peroxides Chemical class 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 229910021485 fumed silica Inorganic materials 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- WKWOFMSUGVVZIV-UHFFFAOYSA-N n-bis(ethenyl)silyl-n-trimethylsilylmethanamine Chemical compound C[Si](C)(C)N(C)[SiH](C=C)C=C WKWOFMSUGVVZIV-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 238000007259 addition reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical group [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- CHHVJOKDGAOHMJ-UHFFFAOYSA-N methoxy(propyl)silane Chemical compound CCC[SiH2]OC CHHVJOKDGAOHMJ-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000002081 peroxide group Chemical group 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000005371 silicon functional group Chemical group 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention belongs to the technical field of insulating materials and synthetic rubbers, and discloses a composite insulator rubber compound and a preparation method and application thereof, wherein the rubber compound comprises the following components in parts by weight: 100 parts of vinyl-terminated phenyl silicone oil, 10-30 parts of phenyl vinyl silicone resin, 20-50 parts of white carbon black, 20-150 parts of a flame retardant, 1-10 parts of a silane coupling agent, 0.1-5 parts of hydrogen-containing silicone oil, 0.1-5 parts of Pt-containing silicone oil, 1-5 parts of a temperature-resistant auxiliary agent, 0.5-5 parts of an internal mold release agent and 0.05-3 parts of a silicon-hydrogen reaction inhibitor; the vinyl-terminated phenyl silicone oil is a polysiloxane oily substance with a main chain formed by alternating silicon and oxygen atoms, wherein a phenyl group is connected to the silicon atom, a vinyl group is contained at the chain end, and the viscosity is 1-50 PaS.
Description
Technical Field
The invention belongs to the technical field of insulating materials and synthetic rubbers, and particularly relates to a composite insulator rubber compound and a preparation method and application thereof.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The phenyl silicone rubber composite insulator is a better rubber product, and can be used as a key part of a high-voltage and ultra-high-voltage power transmission line under the conditions of high altitude, strong ultraviolet rays, high cold, high humidity, high temperature, strong wind and the like due to excellent performances such as radiation resistance, cold resistance, high insulativity, high toughness, high strength and the like.
The existing phenyl silicone rubber composite insulator is prepared by taking raw phenyl silicone rubber as a main material and various fillers and small materials as auxiliary materials, uniformly mixing the raw phenyl silicone rubber and the various fillers and the small materials in a kneader to obtain phenyl gross rubber, then adding a peroxide vulcanizing agent, conveying the mixture into a mold cavity through a screw conveyor, and carrying out high-temperature mold pressing and vulcanizing molding. The molecular weight of the raw phenyl silicone rubber is generally 50-80 ten thousand, the viscosity is more than 1000PaS, the material mixing difficulty is high, and the power consumption is high; and the phenyl rubber compound has poor fluidity, is difficult to fill a die cavity, and is easy to cause surface defects of the umbrella skirt of the insulator (see figure 1 for the umbrella skirt defect of the phenyl silicone rubber composite insulator). Meanwhile, the vulcanizing agent is peroxide, so that certain safety risk is caused in the use process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a composite insulator rubber compound and a preparation method and application thereof.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides a composite insulator rubber compound, which comprises the following components in parts by weight:
100 parts of vinyl-terminated phenyl silicone oil, 10-30 parts of phenyl vinyl silicone resin, 20-50 parts of white carbon black, 20-150 parts of a flame retardant, 1-10 parts of a silane coupling agent, 0.1-5 parts of hydrogen-containing silicone oil, 0.1-5 parts of Pt-containing silicone oil, 1-5 parts of a temperature-resistant auxiliary agent, 0.5-5 parts of an internal mold release agent and 0.05-3 parts of a silicon-hydrogen reaction inhibitor;
the vinyl-terminated phenyl silicone oil refers to polysiloxane oil with a main chain composed of silicon and oxygen atoms alternately, wherein methyl and phenyl groups are connected to the silicon atoms, and the vinyl is terminated.
In a second aspect, the invention provides a preparation method of the composite insulator rubber compound, which comprises the following steps:
and the vinyl-terminated phenyl silicone oil is respectively prepared into the component A and the component B with phenyl vinyl silicone resin, white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent, an internal release agent, Pt-containing silicone oil, a silicon-hydrogen reaction inhibitor and hydrogen-containing silicone oil in a kneader or a double-line mixer, and finally the components are pressurized by a charging pump and enter a static mixer to be uniformly mixed, namely the liquid phenyl silicone rubber compound.
In a third aspect, the invention provides the use of the rubber compound in the preparation of an insulating material, in particular in the preparation of a composite insulator.
The beneficial effects achieved by one or more of the embodiments of the invention described above are as follows:
compared with the prior art, the invention provides a composite insulator liquid phenyl silicone rubber compound and a preparation method thereof, compared with a phenyl silicone rubber insulator which uses phenyl silicone rubber raw rubber with the viscosity of more than 1000PaS as a main raw material and is produced by adopting a peroxide vulcanizing agent, the invention uses vinyl-terminated phenyl silicone oil with the viscosity of 1-50 PaS, matched filler, small materials and the like for producing the phenyl silicone rubber insulator, and solves the problems of large difficulty in uniform mixing of materials, high power consumption, surface defects of an insulator umbrella skirt and the like; and meanwhile, Pt is adopted to carry out vulcanization through hydrosilylation reaction to replace a peroxide vulcanizing agent with certain safety risk, and the vulcanizing agent has no peculiar smell, is nontoxic, safe and reliable during vulcanization.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a defect diagram of a skirt of a conventional phenyl silicone rubber composite insulator;
fig. 2 is a liquid phenyl silicone rubber composite insulator shed according to embodiment 1 of the present invention;
FIG. 3 is a low temperature resistance curve of the liquid phenyl silicone rubber compound of example 1 of the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. 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.
As recorded in the background art, the phenyl silicone rubber crude rubber has large molecular weight and viscosity, so that the difficulty in uniformly mixing materials is high, the energy consumption is high, and the surface of the insulator umbrella skirt is easy to have defects because the phenyl rubber compound has poor fluidity and is difficult to fill a die cavity; in addition, the vulcanizing agent used in the vulcanization molding process is peroxide, and the use of the peroxide easily causes the problems of potential safety hazards and the like. In order to solve the problems, the invention optimizes and improves the formula of the mixed rubber of the phenyl silicone rubber.
In a first aspect, the invention provides a composite insulator rubber compound, which comprises the following components in parts by weight:
100 parts of vinyl-terminated phenyl silicone oil, 10-30 parts of phenyl vinyl silicone resin, 20-50 parts of white carbon black, 20-150 parts of a flame retardant, 1-10 parts of a silane coupling agent, 0.1-5 parts of hydrogen-containing silicone oil, 0.1-5 parts of Pt-containing silicone oil, 1-5 parts of a temperature-resistant auxiliary agent, 0.5-5 parts of an internal mold release agent and 0.05-3 parts of a silicon-hydrogen reaction inhibitor;
the vinyl-terminated phenyl silicone oil refers to polysiloxane oil with a main chain composed of silicon and oxygen atoms alternately, wherein methyl and phenyl groups are connected to the silicon atoms, and the vinyl is terminated.
The viscosity of the polysiloxane oily substance is 1-50 PaS. Because a large-volume phenyl group is introduced into a silicon atom of a main chain, the oxidation of a side group is inhibited, and simultaneously, steric hindrance is formed on a silicon-oxygen chain, so that the main chain is difficult to degrade, and the stability is greatly improved, therefore, the vinyl-terminated phenyl silicone oil has unique high-low temperature resistance, irradiation resistance and high damping performance. Because the viscosity of the vinyl-terminated phenyl silicone oil is low, the liquid phenyl silicone rubber compound produced by taking the vinyl-terminated phenyl silicone oil as a main raw material and matched fillers, small materials and the like has low material viscosity, good fluidity, convenient mixing and conveying and low power consumption, and the produced silicone rubber insulator has complete umbrella skirt and no defects.
When the vulcanizing is carried out, Pt in the Pt-containing silicone oil is vulcanized through hydrosilylation reaction to replace a peroxide vulcanizing agent, so that the potential safety hazard can be better eliminated, and no peculiar smell, no toxicity, safety and reliability are realized during the vulcanizing.
The hydrogen-containing silicone oil is a silicone oil containing active Si-H groups and is used as a cross-linking agent for hydrosilylation reaction.
The Pt-containing silicone oil is a catalyst for hydrosilylation reaction, and active Pt is dissolved in the silicone oil and is beneficial to being uniformly dispersed in rubber compound.
The silane coupling agent not only contains carbon functional groups capable of reacting with organic polymers, but also has the characteristics of easy hydrolysis and polycondensation, and can also form silicon functional groups chemically bonded with the surface of an inorganic material, so that the compatibility of the vinyl-terminated phenyl silicone oil and other inorganic raw materials can be improved.
The hydrosilylation inhibitor can delay hydrosilylation reaction, thereby adjusting vulcanization speed and prolonging service life to meet production and application.
In some embodiments, the composite insulator compound comprises the following components in parts by weight: 100 parts of vinyl-terminated phenyl silicone oil, 10-30 parts of phenyl vinyl silicone resin, 20-50 parts of white carbon black, 20-150 parts of a flame retardant, 1-10 parts of a silane coupling agent, 1-5 parts of hydrogen-containing silicone oil, 0.1-5 parts of Pt-containing silicone oil, 1-5 parts of a temperature-resistant auxiliary agent, 0.5-5 parts of an internal mold release agent and 0.05-3 parts of a silicon-hydrogen reaction inhibitor.
Specifically, the parts of phenyl vinyl silicone resin include, but are not limited to, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts and 30 parts.
The parts of the hydrogen-containing silicone oil include, but are not limited to, 0.1 part, 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts and 5 parts.
The parts of the Pt-containing silicone oil include, but are not limited to, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 part, 1.3 part, 1.4 part, 1.5 part, 1.6 part, 1.7 part, 1.8 part, 1.9 part, 2 parts, 2.1 part, 2.2 part, 2.3 part, 2.4 part, 2.5 part, 2.6 part, 2.7 part, 2.8 part, 2.9 part, 3 part, 3.1 part, 3.2 part, 3.3 part, 3.4 part, 3.5 part, 3.6 part, 3.7 part, 3.8 part, 3.9 part, 4 part, 4.1 part, 4.2 part, 4.3 part, 4.4.5 part, 4.6 part, 4.7 part, 4.8 part, 4.9 part, 4.1 part, 4.2 part, 4.3.3 part, 4.4.4.5 part, 4.6 part, 4.7 part, 4.8 part, 4.5 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8 part, 4.6 part, 4.8.
The parts of the silane coupling agent include, but are not limited to, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts, and 10 parts.
The parts of the hydrosilylation inhibitor include, but are not limited to, 0.05 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts, 2.1 parts, 2.2 parts, 2.3 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.7 parts, 2.8 parts, 2.9 parts, and 3 parts.
In some embodiments, the vinyl-terminated phenyl silicone oil is low phenyl silicone oil, medium phenyl silicone oil or high phenyl silicone oil, the [ Ph/Si ] of the low phenyl silicone oil is 5-10%, the [ Ph/Si ] of the medium phenyl silicone oil is 15-25%, and the [ Ph/Si ] of the high phenyl silicone oil is more than or equal to 30%.
The low phenyl silicone oil (Ph/Si) is 5-10 percent, has the best low temperature resistance, and the freezing point is lower than minus 80 ℃; the medium phenyl silicone oil (15-25 percent of [ Ph/Si ]) has the characteristics of excellent mechanical property, good thermal stability and the like; the high phenyl silicone oil (Ph/Si) is more than or equal to 30 percent and has excellent high radiation resistance. Wherein Ph is an organosilicon chain member containing a phenyl group, Si is all the organosilicon chain members, [ Ph/Si ] is a proportion of the organosilicon chain members containing a phenyl group to all the organosilicon chain members. And (3) adjusting the terminal vinyl phenyl silicone oil according to the content of phenyl groups in a classified manner to produce the phenyl silicone rubber composite insulator meeting different performance requirements.
When the low-temperature resistant composite insulator is prepared, the low-phenyl silicone oil is selected below minus 80 ℃.
When the high-temperature-resistant 300 ℃ composite insulator is prepared, the medium phenyl silicone oil is selected.
And when the high-radiation-resistant composite insulator is prepared, high-phenyl silicone oil is selected.
Preferably, the mol content of vinyl chain links in the vinyl-terminated phenyl silicone oil is 0.05-5%.
In some embodiments, the hydrogen-containing silicone oil has a hydrogen content of 0.1 to 1.6% by mass and a viscosity of 10 to 200 mPa.
In some embodiments, the Pt-containing silicone oil is a silicone oil containing Pt in an amount of 1000 to 10000 ppm.
In some embodiments, the hydrosilylation inhibitor is selected from a polyvinyl polysiloxane, an alkynol compound, an amide compound, or a cyanide compound.
In some embodiments, the specific surface area of the white carbon black is not less than 150m 2 (ii) in terms of/g. The white carbon black is fumed white carbon black or precipitated white carbon black.
In some embodiments, the flame retardant is selected from one or more of aluminum oxide, magnesium hydroxide, boron nitride, zinc borate, or zinc oxide.
Preferably, the particle size of the flame retardant is less than 10 μm.
Further preferably, the flame retardant is modified by compounding one or more of silazane coupling agent, titanate coupling agent, epoxy hydrocarbon silane coupling agent or aluminate coupling agent.
In some embodiments, the silane coupling agent is selected from the group consisting of tetramethyldivinyldisilazane, hexamethyldisilazane, phenyltrimethoxysilane, vinyltrimethoxysilane, phenyltriethoxysilane, vinyltriethoxysilane, gamma-aminopropyltriethoxysilane, gamma- (2, 3-glycidoxy) propylmethoxysilane, and gamma-methacryloxypropyltrimethoxysilane.
Preferably, the rubber compound further comprises 1-3 parts of a temperature-resistant auxiliary agent, so that the high-temperature resistance is improved.
Further preferably, the temperature-resistant auxiliary agent is one, two or more selected from iron oxide, cerium oxide, titanium dioxide, yttrium oxide or gadolinium oxide.
Preferably, the internal mold release agent is selected from methyl-terminated low-viscosity phenyl silicone oil, stearic acids or low-viscosity methyl silicone oil.
In a second aspect, the present invention provides a method for preparing the rubber compound, comprising the steps of:
and the vinyl-terminated phenyl silicone oil is respectively prepared into the component A and the component B with phenyl vinyl silicone resin, white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent, an internal release agent, Pt-containing silicone oil, a silicon-hydrogen reaction inhibitor and hydrogen-containing silicone oil in a kneader or a double-line mixer, and finally the components are pressurized by a charging pump and enter a static mixer to be uniformly mixed, namely the liquid phenyl silicone rubber compound.
The main component used by the phenyl silicone rubber composite insulator is vinyl-terminated phenyl silicone oil, the vinyl-terminated phenyl silicone oil is respectively made into a component A and a component B with phenyl vinyl silicone resin, white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent, an internal release agent, Pt-containing silicone oil, a silicon hydrogen reaction inhibitor and hydrogen-containing silicone oil in a kneader or a double-line mixer, and finally the components A and B are pressurized by a charging pump and enter a static mixer to be uniformly mixed, namely liquid phenyl silicone rubber compound is conveyed into an insulator mold cavity by an injection machine, and the silicon hydrogen addition reaction is carried out at a certain temperature and under a certain pressure to vulcanize and form the phenyl silicone rubber composite insulator. In the whole production process, the material has low viscosity, good fluidity, convenient mixing and conveying and low power consumption; the mold cavity is easy to fill, and the surface of the insulator umbrella skirt is free of defects; and meanwhile, Pt is adopted for vulcanization through hydrosilylation, so that no peculiar smell, no toxicity, safety and reliability are realized during vulcanization.
In some embodiments, the preparation method of the liquid phenyl silicone rubber compound specifically comprises the following steps:
mixing vinyl-terminated phenyl silicone oil and phenyl vinyl silicone resin, heating for dissolving, adding white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent and an internal release agent, and uniformly mixing to obtain a mixture;
in the mixing process, heating and vacuumizing the mixture, cooling and filtering to remove impurities to obtain a base material;
adding a hydrosilation reaction inhibitor and Pt-containing silicone oil into the base material, and uniformly mixing to obtain a component A;
adding hydrogen-containing silicone oil into the base material to obtain a component B;
and pressurizing the component A and the component B by a charging pump according to a certain proportion, and then feeding the components into a static mixer for uniform mixing, namely the liquid phenyl silicone rubber compound.
When products such as a composite insulator are prepared, the liquid phenyl silicone rubber compound is conveyed into an insulator mold cavity through an injection machine, and then the silicon-hydrogen addition reaction and vulcanization molding are carried out at a certain temperature and under a certain pressure, so that the product is obtained. The vulcanization temperature is 150-160 ℃, the vulcanization pressure is 5-25 MPa, and the vulcanization time is 0.25-1.5 h.
Preferably, the operation temperature of the phenyl silicone oil for dissolving the phenyl vinyl silicone resin is 50-100 ℃.
In some embodiments, the mixture is mixed, heated at 150-170 ℃, vacuumed at-0.08 to-0.095 MPa, and vacuumed for 0.5 to 1.5 hours.
In a third aspect, the invention provides the application of the liquid phenyl silicone rubber compound in the preparation of insulating materials, in particular the application in the preparation of composite insulators.
The present invention will be further described with reference to the following examples.
Example 1
A preparation method of liquid phenyl silicone rubber compound for a composite insulator with low temperature resistance (less than or equal to minus 80 ℃, see a low temperature resistance curve chart of figure 1) and better mechanical property, insulating property and hydrophobic property simultaneously comprises the following specific steps:
the rubber compound comprises the following ingredients:
100 kg of vinyl-terminated phenyl silicone oil, wherein [ Ph/Si ] is 7.5%, and the viscosity is 6Pa.s, and 85 kg of phenyl silicone oil; 7.5 percent of [ Ph/Si ], and 15 kilograms of phenyl silicone oil with the viscosity of 12 Pa.s;
15 kg of phenyl vinyl silicone resin, and the molar mass of vinyl is 1.2%
90 kg of flame retardant, the aluminum hydroxide and the boron nitride are synergistically matched, the mass ratio is 8:2, and the aluminum hydroxide is subjected to surface treatment by vinyl trimethoxy silane and has the particle size of less than 10 mu m;
30 kg of fumed silica and 200m of specific surface area 2 /g；
5 kg of silane coupling agent, divinyl tetramethyl disilazane;
3 kg of temperature-resistant additive and 50% of cerium oxide paste;
0.1 kg of hydrosilation inhibitor and 1-ethynyl-1-cyclohexanol;
0.3 kg of hydrogen-containing silicone oil, 0.8 percent of hydrogen content and 100m PaS of viscosity;
0.4 kg of Pt-containing silicone oil, and 1000ppm of Pt-containing silicone oil;
0.5 kg of internal release agent is methyl-terminated low-viscosity phenyl silicone oil (300 mPas).
(2) The preparation process comprises the following steps:
putting the vinyl-terminated phenyl silicone oil into a kneader, adding phenyl vinyl silicone resin, heating to 60 ℃ for dissolution, then adding the white carbon black, the flame retardant, the silane coupling agent, the temperature-resistant auxiliary agent and the internal release agent for 5 times, and uniformly mixing;
then heating to 160 ℃, vacuumizing to-0.09 MPa, treating for 1.0h, cooling, filtering, and removing impurity particles to obtain a base material;
adding a hydrosilation reaction inhibitor and Pt-containing silicone oil into the base material, uniformly mixing, and marking the component A;
adding hydrogen-containing silicone oil into the base material, uniformly mixing, and marking the component B;
and (3) pressurizing the component A and the component B by a pump according to the proportion of 1:1, and uniformly mixing the components by a static mixer to obtain the liquid phenyl silicone rubber compound.
And (3) conveying the rubber compound into an insulator mold cavity through an injection machine, carrying out hydrosilylation reaction for 0.3h at the temperature of 155 ℃ and under the pressure of 15MPa of vulcanization pressure, and vulcanizing and molding the phenyl silicone rubber composite insulator.
Table 1 test results of the rubber mixtures of example 1
As can be seen from Table 1, the liquid phenyl silicone rubber compound obtained in example 1 has high resistivity and good mechanical properties and waterproof properties; as can be seen from fig. 2, the phenyl silicone rubber insulator shed of example 1 is complete and free of defects; meanwhile, as can be seen from the low temperature resistance graph in FIG. 3, the liquid phenyl silicone rubber compound of example 1 has excellent low temperature resistance, and the glass transition temperature is-100 ℃.
Example 2
A preparation method of a liquid phenyl silicone rubber compound for a composite insulator, which resists a high temperature of 300 ℃ and has better mechanical property, insulating property and hydrophobic property, comprises the following steps:
the rubber compound comprises the following ingredients:
100 kg of vinyl-terminated phenyl silicone oil, wherein [ Ph/Si ] is 20%, and the viscosity is 5PaS phenyl silicone oil 90 kg; [ Ph/Si ] 20%, viscosity 15PaS phenyl silicone oil 10 kg;
10 kg of phenyl vinyl silicone resin, wherein the molar mass of vinyl is 1.2%;
90 kilograms of flame retardant, the aluminum hydroxide is synergistically matched with the magnesium hydroxide and the boron nitride, the mass ratio is 8:1:1, and the aluminum hydroxide and the magnesium hydroxide are subjected to surface treatment by phenyltrimethoxysilane to obtain particles with the particle size of less than 10 mu m;
30 kg of fumed silica and 200m of specific surface area 2 /g；
5 kg of silane coupling agent, divinyl tetramethyl disilazane;
3 kg of temperature-resistant additive and 50% of cerium oxide paste;
0.15 kg of hydrosilation inhibitor and 1-ethynyl-1-cyclohexanol;
0.4 kg of hydrogen-containing silicone oil, 0.8 percent of hydrogen content and 100m PaS of viscosity;
0.5 kg of Pt-containing silicone oil, and 1000ppm of Pt-containing silicone oil;
0.6 kg of internal release agent, methyl-terminated low-viscosity phenyl silicone oil (300mPas)
(2) The preparation process comprises the following steps:
putting the vinyl-terminated phenyl silicone oil into a kneader, adding phenyl vinyl silicone resin, heating to 70 ℃ for dissolution, then adding the white carbon black, the flame retardant, the silane coupling agent, the temperature-resistant auxiliary agent and the internal release agent for 7 times, and uniformly mixing;
then heating to 160 ℃, vacuumizing to-0.09 MPa for 1.0h, cooling, filtering, and removing impurity particles to obtain a base material;
adding a hydrosilation inhibitor and Pt-containing silicone oil into the base material, and uniformly mixing to obtain a component A;
adding hydrogen-containing silicone oil into the base material, and uniformly mixing to obtain a component B;
the component A and the component B are pressurized by a pump according to the proportion of 1:1 and are uniformly mixed by a static mixer, namely liquid phenyl silicone rubber compound;
and (3) conveying the rubber compound into an insulator mold cavity through an injection machine, carrying out hydrosilylation reaction for 0.3h at 160 ℃ and under the pressure of 15MPa of vulcanization pressure, and carrying out vulcanization molding to obtain the phenyl silicone rubber composite insulator.
Table 2 test results of the rubber mixtures of example 2
TABLE 3 high-temperature aging test results for the rubber mixtures of example 2
| Serial number | Inspection item | Technical index | Pre-burn-in test data | Test data after aging at 300 ℃ for 24h |
| 1 | Hardness of | Not less than 50 DEG C | 58 | 68 |
| 2 | Tensile strength | >4MPa | 5.5 | 4.1 |
| 3 | Elongation at break | >150％ | 230 | 170 |
| 4 | Tear strength | ≥10KN/m | 15.6 | 11.5 |
As can be seen from Table 2, the liquid phenyl silicone rubber compound obtained in example 2 has high resistivity and good mechanical properties and waterproof properties, and as can be seen from Table 3, the liquid phenyl silicone rubber compound still has good mechanical properties after being aged for 24 hours at 300 ℃.
Example 3
A liquid phenyl silicone rubber compound for a composite insulator, which has high radiation resistance, good mechanical property, good insulating property and good hydrophobic property, and a preparation method thereof.
The rubber compound comprises the following ingredients:
100 kg of vinyl-terminated phenyl silicone oil, wherein [ Ph/Si ] is 30%, and the viscosity is 8PaS phenyl silicone oil is 95 kg; [ Ph/Si ] 40%, viscosity 15PaS phenyl silicone oil 5 kg;
10 kg of phenyl vinyl silicone resin, wherein the molar mass of vinyl is 1.5 percent;
90 kilograms of fire retardant, aluminium hydroxide, magnesium hydroxide, boron nitride synergistic reaction, the mass ratio is 7: 1: 2, carrying out surface treatment on aluminum hydroxide and magnesium hydroxide by using vinyl trimethoxy silane, wherein the particle size is less than 10 mu m;
30 kg of fumed silica and 200m of specific surface area 2 /g；
5 kg of silane coupling agent, divinyl tetramethyl disilazane;
3 kg of temperature-resistant additive and 50% of cerium oxide paste;
0.2 kg of hydrosilation inhibitor and 1-ethynyl-1-cyclohexanol;
0.5 kg of hydrogen-containing silicone oil, 1.2 percent of hydrogen content and 100m Pa.s of viscosity;
0.6 kg of Pt-containing silicone oil and 2000ppm of Pt-containing silicone oil;
0.6 kg of internal release agent is methyl-terminated low-viscosity phenyl silicone oil (300 mPas).
(2) The preparation process specifically comprises the following steps:
putting the vinyl-terminated phenyl silicone oil into a kneader, adding phenyl vinyl silicone resin, heating to 80 ℃ for dissolution, then adding the white carbon black, the flame retardant, the silane coupling agent, the temperature-resistant auxiliary agent and the internal release agent by 9 times, and uniformly mixing;
then heating to 160 ℃, vacuumizing to-0.09 MPa for 1.0h, cooling, filtering, and removing impurity particles to obtain a base material;
adding a hydrosilation inhibitor and Pt-containing silicone oil into the base material, and uniformly mixing to obtain a component A;
adding hydrogen-containing silicone oil into the base material, and uniformly mixing to obtain a component B;
the component A and the component B are pressurized by a pump according to the proportion of 1:1 and are uniformly mixed by a static mixer, namely, liquid phenyl silicone rubber compound is conveyed into an insulator mold cavity by an injection machine, and the phenyl silicone rubber compound is vulcanized and molded after hydrosilylation reaction for 0.5h at the temperature of 160 ℃ and the vulcanization pressure of 15 MPa.
Table 4 test results of rubber mixtures in example 3
TABLE 5 results of the radiation ageing tests on the mixes of example 3
As can be seen from Table 4, the liquid phenyl silicone rubber compound obtained in example 3 has high resistivity and good mechanical properties and waterproof properties, and as can be seen from Table 5, the liquid phenyl silicone rubber compound still has good mechanical properties under the condition of 500Kgry radiation.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A composite insulator rubber compound is characterized in that: the paint comprises the following components in parts by weight: 100 parts of vinyl-terminated phenyl silicone oil, 10-30 parts of phenyl vinyl silicone resin, 20-50 parts of white carbon black, 20-150 parts of a flame retardant, 1-10 parts of a silane coupling agent, 0.1-5 parts of hydrogen-containing silicone oil, 0.1-5 parts of Pt-containing silicone oil, 1-5 parts of a temperature-resistant auxiliary agent, 0.5-5 parts of an internal mold release agent and 0.05-3 parts of a silicon-hydrogen reaction inhibitor;
the vinyl-terminated phenyl silicone oil refers to polysiloxane oil with a main chain composed of silicon and oxygen atoms alternately, wherein methyl and phenyl groups are connected to the silicon atoms, and the vinyl is terminated.
2. A composite insulator mix according to claim 1, characterised in that: the vinyl-terminated phenyl silicone oil is low phenyl silicone oil, medium phenyl silicone oil or high phenyl silicone oil, the [ Ph/Si ] of the low phenyl silicone oil is 5-10%, the [ Ph/Si ] of the medium phenyl silicone oil is 15-25%, and the [ Ph/Si ] of the high phenyl silicone oil is more than or equal to 30%.
3. A rubber composition according to claim 1, wherein: in the vinyl-terminated phenyl silicone oil, the molar content of vinyl chain links is 0.05-5%.
4. A composite insulator mix according to claim 1, characterised in that: the hydrogen-containing silicone oil contains 0.1-1.6% of hydrogen by mass and has viscosity of 10-200 m Pa.s;
or the Pt-containing silicone oil is the silicone oil with the Pt content of 1000-10000 ppm;
or the hydrosilation inhibitor is selected from polyvinyl polysiloxane, alkynol compounds, amide compounds or cyanogen compounds.
5. A composite insulator mix according to claim 1, characterised in that: the specific surface area of the white carbon black is more than or equal to 150m 2 /g；
Preferably, the flame retardant is selected from one or more of aluminum oxide, magnesium hydroxide, boron nitride, zinc borate or zinc oxide;
preferably, the particle size of the flame retardant is less than 10 μm;
further preferably, the flame retardant is a modified flame retardant, and the modifier of the flame retardant is a silazane-based coupling agent, a titanate-based coupling agent or an aluminate-based coupling agent.
6. A composite insulator mix according to claim 1, characterised in that: the silane coupling agent is selected from tetramethyl divinyl disilazane, hexamethyldisilazane, phenyl trimethoxy silane, vinyl trimethoxy silane, phenyl triethoxy silane, vinyl triethoxy silane, gamma-aminopropyl triethoxy silane, gamma- (2, 3-epoxypropoxy) propyl methoxy silane or gamma-methacryloxypropyl trimethoxy silane;
preferably, the rubber compound further comprises 1-3 parts of a temperature-resistant auxiliary agent;
further preferably, the temperature-resistant auxiliary agent is one, two or more selected from ferric oxide, cerium oxide, titanium dioxide, yttrium oxide or gadolinium oxide;
preferably, the internal mold release agent is selected from methyl-terminated low-viscosity phenyl silicone oil, stearic acids or low-viscosity methyl silicone oil.
7. A method for preparing a composite insulator mix according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
and the vinyl-terminated phenyl silicone oil is respectively prepared into the component A and the component B with phenyl vinyl silicone resin, white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent, an internal release agent, Pt-containing silicone oil, a silicon-hydrogen reaction inhibitor and hydrogen-containing silicone oil in a kneader or a double-line mixer, and finally the components are pressurized by a charging pump and enter a static mixer to be uniformly mixed, namely the liquid phenyl silicone rubber compound.
8. The method of preparing a composite insulator mix according to claim 7, characterized in that: the method specifically comprises the following steps:
mixing vinyl-terminated phenyl silicone oil and phenyl vinyl silicone resin, heating for dissolving, adding white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent and an internal release agent, and uniformly mixing to obtain a mixture;
in the mixing process, heating and vacuumizing the mixture, cooling and filtering to remove impurities to obtain a base material;
adding a hydrosilation inhibitor and Pt-containing silicone oil into the base material, and uniformly mixing to obtain a component A;
adding hydrogen-containing silicone oil into the base material to obtain a component B;
and pressurizing the component A and the component B by a charging pump according to a certain proportion, and then feeding the components into a static mixer for uniform mixing, namely the liquid phenyl silicone rubber compound.
9. The method of preparing a composite insulator mix according to claim 8, characterized in that: also comprises the following steps;
and conveying the liquid phenyl silicone rubber compound into an insulator mold cavity through an injection machine, carrying out hydrosilylation reaction at a certain temperature and under a certain pressure, and vulcanizing to form the phenyl silicone rubber composite insulator.
10. Use of a composite insulator mix according to any one of claims 1 to 6 for the preparation of insulation material, in particular for the preparation of composite insulators.
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| WO2017028383A1 (en) * | 2015-08-19 | 2017-02-23 | 广东生益科技股份有限公司 | Organic silicone resin aluminum base copper clad laminate and preparation method thereof |
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