CN114836041B - 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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- CN114836041B CN114836041B CN202210674840.0A CN202210674840A CN114836041B CN 114836041 B CN114836041 B CN 114836041B CN 202210674840 A CN202210674840 A CN 202210674840A CN 114836041 B CN114836041 B CN 114836041B
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- 239000012212 insulator Substances 0.000 title claims abstract description 63
- 150000001875 compounds Chemical class 0.000 title claims abstract description 53
- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 229920001971 elastomer Polymers 0.000 title claims abstract description 29
- 239000005060 rubber Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 229920002545 silicone oil Polymers 0.000 claims abstract description 116
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 113
- -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
- 239000001257 hydrogen Substances 0.000 claims abstract description 28
- 229910052739 hydrogen Inorganic materials 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 26
- 239000003063 flame retardant Substances 0.000 claims abstract description 25
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000006229 carbon black Substances 0.000 claims abstract description 23
- 229920002050 silicone resin Polymers 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000002683 reaction inhibitor Substances 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 6
- 239000011810 insulating material Substances 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims abstract description 5
- 125000004430 oxygen atom Chemical group O* 0.000 claims abstract description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 48
- 239000004945 silicone rubber Substances 0.000 claims description 48
- 238000006459 hydrosilylation reaction Methods 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 23
- 239000003112 inhibitor Substances 0.000 claims description 17
- 239000012752 auxiliary agent Substances 0.000 claims description 13
- 239000006082 mold release agent Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 10
- 230000007547 defect Effects 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 239000007822 coupling agent 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
- 229920002554 vinyl polymer Polymers 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
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 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
- CHHVJOKDGAOHMJ-UHFFFAOYSA-N methoxy(propyl)silane Chemical compound CCC[SiH2]OC CHHVJOKDGAOHMJ-UHFFFAOYSA-N 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-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
- 239000008117 stearic acid Substances 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
- 239000003607 modifier Substances 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
- 229920003051 synthetic elastomer Polymers 0.000 abstract description 2
- 239000005061 synthetic rubber Substances 0.000 abstract description 2
- 238000004073 vulcanization Methods 0.000 description 15
- 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
- 230000032683 aging Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000000945 filler Substances 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
- 238000013329 compounding Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 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
- 150000001343 alkyl silanes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 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
- 231100000956 nontoxicity Toxicity 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
- 125000005371 silicon functional group Chemical group 0.000 description 1
Classifications
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of insulating materials and synthetic rubber, and discloses a composite insulator rubber compound, 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 flame retardant, 1-10 parts of 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 Wen Chuji resistant, 0.5-5 parts of internal release agent and 0.05-3 parts of hydrosilyl reaction inhibitor; the main chain of the vinyl-terminated phenyl silicone oil is composed of silicon and oxygen atoms alternately, and the silicon atoms are connected with phenyl groups, the chain ends of the silicon atoms contain vinyl groups, and the viscosity of the silicon oil is 1-50 PaS.
Description
Technical Field
The invention belongs to the technical field of insulating materials and synthetic rubber, 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 rubber compound is uncrosslinked and flowable rubber material obtained by mixing compounding agents into blocky, granular and powdery raw rubber, and the rubber product is prepared by compression molding and the like, wherein the phenyl silicone rubber composite insulator is a better rubber product, and can be used as a key component of a high-voltage and ultra-high-voltage 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 properties such as radiation resistance, cold resistance, good insulativity, good toughness, high strength and the like.
The existing phenyl silicone rubber composite insulator takes raw phenyl silicone rubber as a main material, various fillers and small materials as auxiliary materials, the raw phenyl silicone rubber and the small materials are uniformly mixed in a kneader to obtain phenyl rubber compound, then peroxide vulcanizing agent is added, and the phenyl rubber compound is conveyed into a die cavity through a screw conveyor and is subjected to high-temperature compression molding vulcanization molding. Because the molecular weight of the raw phenyl silicone rubber is generally 50-80 ten thousand, the viscosity is more than 1000PaS, the difficulty of mixing materials uniformly is high, and the power consumption is high; and the fluidity of the phenyl rubber compound is poor, so that the mold cavity is difficult to be filled, and the defect of the umbrella skirt surface of the insulator (see the defect of the umbrella skirt of the phenyl silicone rubber composite insulator in the figure 1) is easy to be caused. Meanwhile, the vulcanizing agent is peroxide, and a certain safety risk is provided in the use process.
Disclosure of Invention
Aiming at the defects existing 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 above object, the present 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 flame retardant, 1-10 parts of 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 refractory Wen Chuji, 0.5-5 parts of internal release agent and 0.05-3 parts of hydrosilyl reaction inhibitor;
The vinyl-terminated phenyl silicone oil refers to polysiloxane oil with a main chain consisting of silicon and oxygen atoms alternately, wherein methyl and phenyl groups are connected on the silicon atoms, and ethylene is terminated.
In a second aspect, the invention provides a method for preparing the composite insulator rubber compound, comprising the following steps:
The vinyl-terminated phenyl silicone oil is respectively prepared into a component A and a component B by a kneader or a double-row mixer together with phenyl vinyl silicone resin, white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent, an internal mold release agent, pt-containing silicone oil, a hydrosilylation inhibitor and hydrogen-containing silicone oil, and finally the components A and B are pressurized by a feed pump and enter a static mixer to be uniformly mixed, thus obtaining the liquid phenyl silicone rubber compound.
In a third aspect, the invention provides the use of said rubber compound for the preparation of insulating materials, in particular for the preparation of composite insulators.
The beneficial effects achieved by one or more embodiments of the present 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 fillers, small materials and the like for producing the phenyl silicone rubber insulator, and solves the problems of high difficulty in material mixing uniformity, high power consumption, insulator umbrella skirt surface defects and the like; meanwhile, pt is adopted to carry out vulcanization through hydrosilylation reaction, so that peroxide vulcanizing agent with certain safety risk is replaced, and the vulcanizing agent is odorless, nontoxic, safe and reliable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a diagram showing the defect of umbrella skirt of a traditional phenyl silicone rubber composite insulator;
FIG. 2 is a liquid phenyl silicone rubber composite insulator umbrella skirt of example 1 of the present invention;
FIG. 3 is a graph showing the low temperature resistance of the liquid phenyl silicone rubber compound of example 1 of the present invention.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. 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 described in the background art, the raw phenyl silicone rubber has larger molecular weight and larger viscosity, so that the materials are difficult to mix uniformly, the energy consumption is high, and the molding cavity is difficult to be filled due to poor fluidity of the phenyl rubber compound, so that the surface of the umbrella skirt of the insulator is easy to be defective; in addition, the vulcanizing agent used in the vulcanization molding process is peroxide, and the use of the peroxide easily causes potential safety hazards and other problems. In order to solve the problems, the invention optimizes and improves the formula of the rubber compound 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 flame retardant, 1-10 parts of 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 refractory Wen Chuji, 0.5-5 parts of internal release agent and 0.05-3 parts of hydrosilyl reaction inhibitor;
The vinyl-terminated phenyl silicone oil refers to polysiloxane oil with a main chain consisting of silicon and oxygen atoms alternately, wherein methyl and phenyl groups are connected on the silicon atoms, and ethylene is terminated.
The viscosity of the polysiloxane oil is 1 to 50PaS. Because the main chain silicon atom is introduced with a large volume of phenyl groups, the oxidation of side groups is inhibited, and meanwhile, steric hindrance is formed on a silicon-oxygen chain, so that the main chain is difficult to degrade, and the stability is greatly improved, so that the vinyl-terminated phenyl silicone oil has unique high and low temperature resistance, irradiation resistance and high damping performance. Because the viscosity of the vinyl-terminated phenyl silicone oil is low, the viscosity of the liquid phenyl silicone rubber compound material produced by taking the vinyl-terminated phenyl silicone oil as a main raw material and matched fillers, small materials and the like is low, the fluidity is good, the mixing and the conveying are convenient, the power consumption is low, and the umbrella skirt of the produced silicone rubber insulator is complete and has no defects.
During vulcanization, pt in the Pt-containing silicone oil is adopted to carry out vulcanization through hydrosilylation reaction, so that peroxide vulcanizing agent is replaced, potential safety hazards can be eliminated well, and no peculiar smell, no toxicity, safety and reliability are realized during vulcanization.
The hydrogen-containing silicone oil is 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, so that the Pt-containing silicone oil is favorable for being uniformly dispersed in the rubber compound.
The silane coupling agent not only contains carbon functional groups capable of reacting with the organic polymer, but also has the characteristics of easy hydrolysis and polycondensation, and can also form silicon functional groups chemically bonded with the surface of inorganic materials, so that the compatibility of vinyl-terminated phenyl silicone oil and other inorganic raw materials can be improved.
The hydrosilylation inhibitor can delay hydrosilylation reaction, thereby adjusting the vulcanization speed and prolonging the service life to meet the requirements of production and application.
In some embodiments, the composite insulator mix 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 flame retardant, 1-10 parts of silane coupling agent, 1-5 parts of hydrogen-containing silicone oil, 0.1-5 parts of Pt-containing silicone oil, 1-5 parts of anti-Wen Chuji parts of internal mold release agent, 0.5-5 parts of hydrosilation inhibitor and 0.05-3 parts of hydrosilation inhibitor.
Specifically, the parts of phenyl vinyl silicone 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, 30 parts.
Parts of 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, 5 parts.
The parts of 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 parts, 2.3 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.7 parts, 2.8 parts, 2.9 parts, 3 parts, 3.1 parts, 3.2 parts, 3.3 parts, 3.4 parts, 3.5 parts, 3.6 parts, 3.7 parts, 3.8 parts, 3.9 parts, 4.1 parts, 4.2 parts, 4.3 parts, 4.4 parts, 4.5 parts, 4.6 parts, 4.7, 4.8 parts, 4.5 parts.
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, 10 parts.
Parts of the hydrosilylation inhibitor include, but are not limited to, 0.05 parts, 1 part, 1.1 parts, 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, 3 parts.
In some embodiments, the vinyl-terminated phenyl silicone oil is a low phenyl silicone oil, a medium phenyl silicone oil, or a high phenyl silicone oil, the low phenyl silicone oil has a [ Ph/Si ] of 5-10%, the medium phenyl silicone oil has a [ Ph/Si ] of 15-25%, and the high phenyl silicone oil has a [ Ph/Si ] of > 30%.
The low-phenyl silicone oil (Ph/Si 5-10%) has the best low-temperature resistance, and the freezing point is lower than-80 ℃; the medium phenyl silicone oil (Ph/Si 15-25%) 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) has excellent high radiation resistance. Wherein Ph is an organosilicon chain unit containing a phenyl group, si is all organosilicon chain units, and [ Ph/Si ] is the proportion of the organosilicon chain unit containing the phenyl group to all organosilicon chain units. And (3) adjusting vinyl-terminated phenyl silicone oil according to the phenyl content classification 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-80 ℃.
When the composite insulator resistant to high temperature of 300 ℃ is prepared, medium phenyl silicone oil is selected.
When preparing the high-radiation-resistant composite insulator, high-phenyl silicone oil is selected.
Preferably, the vinyl chain unit molar content in the vinyl-terminated phenyl silicone oil is 0.05-5%.
In some embodiments, the hydrogen containing silicone oil has a hydrogen containing mass percent of 0.1 to 1.6% and a viscosity of 10 to 200mPa.
In some embodiments, the Pt-containing silicone oil is a silicone oil having a Pt content of 1000 to 10000 ppm.
In some embodiments, the hydrosilylation inhibitor is selected from the group consisting of 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 equal to or greater than 150m 2/g. The white carbon black is gas phase 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 flame retardant has a particle size of less than 10 μm.
Further preferably, the flame retardant is modified by compounding one or more than two of silazane coupling agents, titanate coupling agents, epoxy alkyl silane coupling agents or aluminate coupling agents.
In some embodiments, the silane coupling agent is selected from the group consisting of tetramethyl divinyl disilazane, hexamethyldisilazane, phenyl trimethoxysilane, vinyl trimethoxysilane, phenyl triethoxysilane, vinyl triethoxysilane, gamma-aminopropyl triethoxysilane, gamma- (2, 3-glycidoxy) propyl methoxysilane, and gamma-methacryloxypropyl trimethoxysilane.
Preferably, the rubber compound further comprises Wen Chuji parts of high-temperature resistance, so that the high-temperature resistance is improved.
Further preferably, the Wen Chuji resistance is selected from one, two or more of 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 acid or low viscosity methyl silicone oil.
In a second aspect, the invention provides a method for preparing said mix comprising the steps of:
The vinyl-terminated phenyl silicone oil is respectively prepared into a component A and a component B by a kneader or a double-row mixer together with phenyl vinyl silicone resin, white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent, an internal mold release agent, pt-containing silicone oil, a hydrosilylation inhibitor and hydrogen-containing silicone oil, and finally the components A and B are pressurized by a feed pump and enter a static mixer to be uniformly mixed, thus obtaining the liquid phenyl silicone rubber compound.
The main components of the phenyl silicone rubber composite insulator are vinyl-terminated phenyl silicone oil, which is respectively prepared into a component A and a component B by a kneader or a double-row mixer together with phenyl vinyl silicone resin, white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent, an internal mold release agent, pt-containing silicone oil, a silicon hydrogen reaction inhibitor and hydrogen-containing silicone oil, and finally the components A and B are pressurized by a feed pump and enter a static mixer to be uniformly mixed, namely liquid phenyl silicone rubber compound is conveyed into an insulator mold cavity through an injector, and subjected to hydrosilylation reaction at a certain temperature and under a certain pressure to be vulcanized and molded into the phenyl silicone rubber composite insulator. In the whole production process, the viscosity of the materials is low, the fluidity is good, the mixing and the conveying are convenient, and the power consumption is low; the mold cavity is easy to be filled, and the surface of the insulator umbrella skirt is free of defects; meanwhile, pt is adopted to carry out vulcanization through hydrosilylation, so that the vulcanizing agent is odorless, nontoxic, safe and reliable.
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 into the mixture, and uniformly mixing to obtain a mixture;
In the mixing process, heating the mixture, vacuumizing, cooling, and filtering to remove impurities to obtain a base material;
adding a hydrosilylation 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 (3) pressurizing the component A and the component B in proportion by a charging pump, and then, mixing the components uniformly by a static mixer, namely, liquid phenyl silicone rubber compound.
When the composite insulator and other products are prepared, the liquid phenyl silicone rubber compound is conveyed into an insulator die cavity through an injection machine, subjected to hydrosilylation reaction at a certain temperature and pressure, and vulcanized and molded to obtain the composite insulator. 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 phenyl silicone oil is dissolved in the phenyl vinyl silicone resin at an operating temperature of 50-100 ℃.
In some embodiments, the mixture is mixed, heated to a temperature of 150-170 ℃, and evacuated for a period of 0.5-1.5 hours at a vacuum level of-0.08 to-0.095 MPa.
In a third aspect, the invention provides the use of said liquid phenyl silicone rubber compound for the preparation of insulating materials, in particular for the preparation of composite insulators.
The invention is further illustrated below with reference to examples.
Example 1
The preparation method of the liquid phenyl silicone rubber compound for the composite insulator, which has low temperature resistance (less than or equal to-80 ℃ and shown in a low temperature resistant graph in figure 1) and better mechanical property, insulating property and hydrophobic property, comprises the following specific steps:
the mix ingredients were as follows:
100 kg of vinyl-terminated phenyl silicone oil, wherein [ Ph/Si ] is 7.5%, and the viscosity is 6Pa.s phenyl silicone oil is 85 kg; [ Ph/Si ]7.5%, and viscosity 12Pa.s phenyl silicone oil 15 kg;
15 kg of phenyl vinyl silicone resin with a vinyl molar mass of 1.2%
90 Kg of flame retardant, aluminum hydroxide and boron nitride are synergistically matched, the mass ratio is 8:2, the aluminum hydroxide is subjected to surface treatment by vinyl trimethoxy silane, and the particle size is less than 10 mu m;
30 kg of gas-phase white carbon black, and the specific surface area is 200m 2/g;
5 kg of silane coupling agent and divinyl tetramethyl disilazane;
3 kg of temperature-resistant auxiliary agent and 50% of cerium oxide paste;
0.1 kg of a hydrosilylation inhibitor, 1-ethynyl-1-cyclohexanol;
0.3 kg of hydrogen-containing silicone oil, 0.8% of hydrogen and 100m PaS of viscosity;
0.4 kg of silicone oil containing Pt, and 1000ppm of silicone oil containing Pt;
0.5 kg of internal mold release agent is methyl end-capped low-viscosity phenyl silicone oil (300 mPaS).
(2) The preparation process comprises the following steps:
placing vinyl-terminated phenyl silicone oil into a kneader, adding phenyl vinyl silicone resin, heating to 60 ℃ for dissolution, and then adding white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent and an internal mold 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 hydrosilylation 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;
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 the liquid phenyl silicone rubber compound.
Conveying the mixed rubber into an insulator die cavity through an injector, performing hydrosilylation reaction for 0.3h at 155 ℃ and under the vulcanization pressure of 15MPa, and vulcanizing to form the phenyl silicone rubber composite insulator.
TABLE 1 detection results of the mixes of example 1
As can be seen in Table 1, the liquid phenyl silicone rubber compound obtained in example 1 has higher resistivity and better mechanical properties and waterproof properties; as can be seen from fig. 2, the phenyl silicone rubber insulator umbrella skirt of example 1 is complete and defect-free; meanwhile, as can be seen from the low temperature resistance graph of FIG. 3, the liquid phenyl silicone rubber compound of example 1 has excellent low temperature resistance and a glass transition temperature of-100 ℃.
Example 2
The preparation method of the liquid phenyl silicone rubber compound for the composite insulator, which is resistant to high temperature of 300 ℃ and has better mechanical property, insulating property and hydrophobic property, comprises the following specific steps:
the mix ingredients were as follows:
100 kg of vinyl-terminated phenyl silicone oil, wherein [ Ph/Si ] is 20%, and the viscosity is 90 kg of 5PaS phenyl silicone oil; [ Ph/Si ]20%, viscosity 15PaS phenyl silicone oil 10 kg;
10 kg of phenyl vinyl silicone resin, wherein the vinyl molar mass is 1.2%;
90 kg of flame retardant, aluminum hydroxide, magnesium hydroxide and boron nitride are synergistically matched, the mass ratio is 8:1:1, the aluminum hydroxide and the magnesium hydroxide are subjected to surface treatment by phenyl trimethoxy silane, and the particle size is less than 10 mu m;
30 kg of gas-phase white carbon black, and the specific surface area is 200m 2/g;
5 kg of silane coupling agent and divinyl tetramethyl disilazane;
3 kg of temperature-resistant auxiliary agent and 50% of cerium oxide paste;
0.15 kg of a hydrosilylation inhibitor, 1-ethynyl-1-cyclohexanol;
0.4 kg of hydrogen-containing silicone oil, 0.8% of hydrogen and 100m PaS of viscosity;
0.5 kg of silicone oil containing Pt, and 1000ppm of silicone oil containing Pt;
0.6 kg of internal mold release agent which is methyl end-capped low-viscosity phenyl silicone oil (300 mPaS)
(2) The preparation process comprises the following steps:
Placing vinyl-terminated phenyl silicone oil into a kneader, adding phenyl vinyl silicone resin, heating to 70 ℃ for dissolution, and then adding white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent and an internal mold release agent for 7 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 hydrosilylation 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;
conveying the mixed rubber into an insulator die cavity through an injection machine, performing hydrosilylation reaction for 0.3h at 160 ℃ and under the vulcanization pressure of 15MPa, and performing vulcanization molding to obtain the phenyl silicone rubber composite insulator.
TABLE 2 detection results of the mixes of example 2
TABLE 3 results of high temperature aging test of the mixes of example 2
| Sequence number | Inspection item | Technical index | Test data before aging | Test data after aging at 300 ℃ for 24 hours |
| 1 | Hardness of | Not less than 50 DEG | 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 |
It can be seen from Table 2 that the liquid phenyl silicone rubber compound obtained in example 2 has higher resistivity and better mechanical properties and waterproof properties, and that the liquid phenyl silicone rubber compound still has better mechanical properties after aging for 24 hours at 300 ℃ in Table 3.
Example 3
A liquid phenyl silicone rubber compound for a composite insulator, which is resistant to high radiation and has better mechanical property, insulating property and hydrophobic property, and a preparation method thereof.
The mix ingredients were as follows:
100 kg of vinyl-terminated phenyl silicone oil, wherein [ Ph/Si ] is 30%, and the viscosity is 95 kg of 8PaS phenyl silicone oil; [ Ph/Si ]40%, viscosity 15PaS phenyl silicone oil 5 kg;
10 kg of phenyl vinyl silicone resin, wherein the vinyl molar mass is 1.5%;
90 kg of flame retardant, and aluminum hydroxide and magnesium hydroxide and boron nitride are synergistically matched, wherein the mass ratio is 7:1:2, carrying out surface treatment on aluminum hydroxide and magnesium hydroxide by vinyl trimethoxy silane, wherein the particle size is less than 10 mu m;
30 kg of gas-phase white carbon black, and the specific surface area is 200m 2/g;
5 kg of silane coupling agent and divinyl tetramethyl disilazane;
3 kg of temperature-resistant auxiliary agent and 50% of cerium oxide paste;
0.2 kg of a hydrosilylation inhibitor, 1-ethynyl-1-cyclohexanol;
0.5 kg of hydrogen-containing silicone oil, wherein the hydrogen content is 1.2%, and the viscosity is 100 Pa.s;
0.6 kg of silicone oil containing Pt, and 2000ppm of silicone oil containing Pt;
0.6 kg of internal mold release agent is methyl end-capped low viscosity phenyl silicone oil (300 mPaS).
(2) The preparation process comprises the following steps:
Placing vinyl-terminated phenyl silicone oil into a kneader, adding phenyl vinyl silicone resin, heating to 80 ℃ for dissolution, and then adding white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent and an internal mold release agent for 9 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 hydrosilylation 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 in a ratio of 1:1 and are uniformly mixed by a static mixer, namely, liquid phenyl silicone rubber compound is conveyed into an insulator die cavity by an injection machine, hydrosilylation reaction is carried out for 0.5h under 160 ℃ and a vulcanization pressure of 15MPa, and the phenyl silicone rubber compound insulator is vulcanized and formed.
TABLE 4 detection results of the mixes in example 3
TABLE 5 radiation aging test results for the mixtures of example 3
It can be seen from Table 4 that the liquid phenyl silicone rubber compound obtained in example 3 has a higher resistivity and better mechanical properties and waterproof properties, and that the liquid phenyl silicone rubber compound still has better mechanical properties under 500Kgry irradiation conditions in Table 5.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A composite insulator rubber compound is characterized in that: 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 flame retardant, 1-10 parts of 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 Wen Chuji-resistant, 0.5-5 parts of internal release agent and 0.05-3 parts of hydrosilyl reaction inhibitor, wherein the internal release agent is selected from methyl-terminated low-viscosity phenyl silicone oil, stearic acid or low-viscosity methyl silicone oil;
The flame retardant is selected from a plurality of aluminum oxide, magnesium hydroxide, boron nitride, zinc borate or zinc oxide;
The vinyl-terminated phenyl silicone oil is polysiloxane oil with a main chain consisting of silicon and oxygen atoms alternately, wherein methyl and phenyl groups are connected to the silicon atoms, and ethylene is terminated; the viscosity of the vinyl-terminated phenyl silicone oil is 1-50 PaS;
In the vinyl-terminated phenyl silicone oil, the molar content of vinyl chain units is 0.05-5%;
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 preparation method of the composite insulator rubber compound comprises the following steps:
the vinyl-terminated phenyl silicone oil is respectively prepared 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 mold release agent, pt-containing silicone oil, a hydrosilylation reaction inhibitor and hydrogen-containing silicone oil in a kneader or a double-row mixer, and finally the components A and B are pressurized by a feed pump and enter a static mixer to be uniformly mixed, thus obtaining liquid phenyl silicone rubber compound;
The composite insulator rubber compound enables the surface of the umbrella skirt of the composite insulator to be complete and free of defects.
2. The composite insulator mix of claim 1, wherein: the hydrogen-containing silicone oil contains 0.1 to 1.6 mass percent of hydrogen and has the viscosity of 10 to 200mPa.s;
Or the Pt-containing silicone oil is silicone oil with the Pt content of 1000-10000 ppm;
Or the hydrosilylation inhibitor is selected from polyvinyl polysiloxane, alkynol compound, amide compound or cyano compound.
3. The composite insulator mix of claim 1, wherein: the specific surface area of the white carbon black is more than or equal to 150m 2/g.
4. The composite insulator mix of claim 1, wherein: the particle size of the flame retardant is less than 10 mu m.
5. The composite insulator mix of claim 4, wherein: the flame retardant is a modified flame retardant, and the modifier of the flame retardant is a silazane coupling agent, a titanate coupling agent or an aluminate coupling agent.
6. The composite insulator mix of claim 1, wherein: the silane coupling agent is selected from tetramethyl divinyl disilazane, hexamethyldisilazane, phenyl trimethoxysilane, vinyl trimethoxysilane, phenyl triethoxysilane, vinyl triethoxysilane, gamma-aminopropyl triethoxysilane, gamma- (2, 3-glycidoxy) propyl methoxysilane or gamma-methacryloxypropyl trimethoxysilane.
7. The composite insulator mix of claim 1, wherein: the rubber compound further comprises Wen Chuji resistant 1-3 parts.
8. The composite insulator mix of claim 7, wherein: the Wen Chuji is selected from one, two or more of ferric oxide, cerium oxide, titanium dioxide, yttrium oxide or gadolinium oxide.
9. A method for preparing the composite insulator mixture according to any one of claims 1 to 8, characterized in that: the method comprises the following steps: the vinyl-terminated phenyl silicone oil is respectively prepared into a component A and a component B by a kneader or a double-row mixer together with phenyl vinyl silicone resin, white carbon black, a flame retardant, a silane coupling agent, a temperature-resistant auxiliary agent, an internal mold release agent, pt-containing silicone oil, a hydrosilylation inhibitor and hydrogen-containing silicone oil, and finally the components A and B are pressurized by a feed pump and enter a static mixer to be uniformly mixed, thus obtaining the liquid phenyl silicone rubber compound.
10. The method for preparing the composite insulator mixture according to claim 9, wherein: 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 into the mixture, and uniformly mixing to obtain a mixture;
In the mixing process, heating the mixture, vacuumizing, cooling, and filtering to remove impurities to obtain a base material;
adding a hydrosilylation 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 (3) pressurizing the component A and the component B in proportion by a charging pump, and then, mixing the components uniformly by a static mixer, namely, liquid phenyl silicone rubber compound.
11. The method for preparing the composite insulator mixture according to claim 10, wherein: the method also comprises the following steps of;
The liquid phenyl silicone rubber compound is conveyed into an insulator die cavity through an injection machine, and subjected to hydrosilylation reaction at a certain temperature and under a certain pressure, so that the phenyl silicone rubber composite insulator is vulcanized and formed.
12. Use of a composite insulator elastomeric compound according to any one of claims 1 to 8 for the preparation of an insulating material.
13. Use of the composite insulator elastomeric compound of any one of claims 1 to 8 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 |
| CN106317900A (en) * | 2016-08-22 | 2017-01-11 | 深圳市新亚新材料有限公司 | Insulation elastic silicone pad with special adhesive property and preparation method of insulation elastic silicone pad |
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