CN115259746B - Mineral volcanic rock fire-resistant bus and processing technology thereof - Google Patents
Mineral volcanic rock fire-resistant bus and processing technology thereof Download PDFInfo
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- CN115259746B CN115259746B CN202211190287.XA CN202211190287A CN115259746B CN 115259746 B CN115259746 B CN 115259746B CN 202211190287 A CN202211190287 A CN 202211190287A CN 115259746 B CN115259746 B CN 115259746B
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- coupling agent
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- 239000011435 rock Substances 0.000 title claims abstract description 58
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 56
- 239000011707 mineral Substances 0.000 title claims abstract description 56
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 30
- 238000005516 engineering process Methods 0.000 title claims abstract description 8
- 238000012545 processing Methods 0.000 title claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 38
- 239000012745 toughening agent Substances 0.000 claims abstract description 37
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 36
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 239000000203 mixture Substances 0.000 claims abstract description 28
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229930185605 Bisphenol Natural products 0.000 claims abstract description 25
- 239000007822 coupling agent Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000004472 Lysine Substances 0.000 claims abstract description 15
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 150000001412 amines Chemical class 0.000 claims abstract description 11
- 150000001413 amino acids Chemical class 0.000 claims abstract description 10
- 229920002521 macromolecule Polymers 0.000 claims abstract description 8
- 239000011342 resin composition Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 7
- 150000003384 small molecules Chemical class 0.000 claims abstract description 6
- 150000002605 large molecules Chemical class 0.000 claims abstract description 5
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical group FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 claims description 40
- VVOAZFWZEDHOOU-UHFFFAOYSA-N magnolol Chemical compound OC1=CC=C(CC=C)C=C1C1=CC(CC=C)=CC=C1O VVOAZFWZEDHOOU-UHFFFAOYSA-N 0.000 claims description 36
- 238000005303 weighing Methods 0.000 claims description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 21
- 229910015900 BF3 Inorganic materials 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 18
- BSYJHYLAMMJNRC-UHFFFAOYSA-N 2,4,4-trimethylpentan-2-ol Chemical compound CC(C)(C)CC(C)(C)O BSYJHYLAMMJNRC-UHFFFAOYSA-N 0.000 claims description 15
- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 claims description 15
- 239000006004 Quartz sand Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 14
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 14
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 14
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 12
- CQZDNELEZXTFEH-UHFFFAOYSA-N tris(dimethylsilyloxy)-phenylsilane Chemical compound C[SiH](C)O[Si](O[SiH](C)C)(O[SiH](C)C)C1=CC=CC=C1 CQZDNELEZXTFEH-UHFFFAOYSA-N 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- MQJKPEGWNLWLTK-UHFFFAOYSA-N Dapsone Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 MQJKPEGWNLWLTK-UHFFFAOYSA-N 0.000 claims description 10
- 238000007872 degassing Methods 0.000 claims description 10
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000011261 inert gas Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- PISLZQACAJMAIO-UHFFFAOYSA-N 2,4-diethyl-6-methylbenzene-1,3-diamine Chemical compound CCC1=CC(C)=C(N)C(CC)=C1N PISLZQACAJMAIO-UHFFFAOYSA-N 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 claims description 2
- 229920000768 polyamine Polymers 0.000 claims description 2
- 238000013329 compounding Methods 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000002253 acid Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- -1 dimethylsiloxane Chemical class 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000004634 thermosetting polymer Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- YKSADNUOSVJOAS-UHFFFAOYSA-N [bis[(dimethyl-$l^{3}-silanyl)oxy]-phenylsilyl]oxy-dimethylsilicon Chemical compound C[Si](C)O[Si](O[Si](C)C)(O[Si](C)C)C1=CC=CC=C1 YKSADNUOSVJOAS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- DWSWCPPGLRSPIT-UHFFFAOYSA-N benzo[c][2,1]benzoxaphosphinin-6-ium 6-oxide Chemical compound C1=CC=C2[P+](=O)OC3=CC=CC=C3C2=C1 DWSWCPPGLRSPIT-UHFFFAOYSA-N 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- JDVIRCVIXCMTPU-UHFFFAOYSA-N ethanamine;trifluoroborane Chemical group CCN.FB(F)F JDVIRCVIXCMTPU-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000006459 hydrosilylation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910052990 silicon hydride Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
Abstract
The invention relates to the technical field of refractory buses, in particular to a mineral volcanic rock refractory bus and a processing technology thereof. The composition for the fire-resistant bus comprises the following substances: 66 to 74 parts of mineral volcanic rock, 1 to 2 parts of compound silane coupling agent and 25 to 32 parts of resin composition by weight; the compound silane coupling agent comprises basic amino acid, a micromolecule coupling agent and a macromolecule coupling agent with the mass ratio of (0.5 to 0.8) to (2.2 to 2.5) to 1; the basic amino acid is lysine, the small molecule coupling agent is KH-550, and the large molecule coupling agent is A-1387; the resin composition comprises the following substances: 15 to 20 parts of bisphenol type epoxy resin, 7 to 9 parts of amine curing agent, 2.8 to 2.9 parts of flexibilizer and 0.1 to 0.2 part of curing accelerator by weight; in the scheme, the mechanical property of the fire-resistant bus is synergistically improved by compounding the silane coupling agent and the toughening agent, so that the engineering application range is widened.
Description
Technical Field
The invention relates to the technical field of refractory buses, in particular to a mineral volcanic rock refractory bus and a processing technology thereof.
Background
Power transmission is an important medium for ensuring the quality of life of people. The carrier of power transmission is a cable, on one hand, the maximum current of a single cable is only 400A, and is more than that of a plurality of cables which are needed to be spliced, the installation of the cable needs to be matched with a bridge frame for laying, and the installation cost is higher; on the other hand, the cable cannot be directly exposed and installed outside, and a steel pipe or a plastic pipe is required to be used as a shell; therefore, in order to reduce the cost and increase the range of use in any environment such as high temperature, corrosive, aqueous, etc., waterproof and fireproof bus bars have been developed.
In the prior art, most of the fire-proof bus wraps fire-proof plates and asbestos through pouring, the fire-proof effect is general, and the use environment is limited. The inorganic filler and thermosetting polymer pouring type fire-resistant bus has excellent fire resistance and fire resistance. It can ensure that the ambient temperature is higher than 700 ℃. The power supply can work for more than 1.5 hours, and short circuit caused by reduction of internal insulation capacity due to increase of ambient temperature is avoided. Among them, epoxy resin has excellent electrical properties and stability, and is widely used for research on fire-resistant buses, but has the defects of high brittleness and easy cracking; on the other hand, the inorganic filler has poor compatibility with thermosetting polymers and poor dispersibility; the prepared refractory bus has the defects of poor mechanical property and weak impact strength, and is difficult to meet the increasingly developed engineering application requirements, so that the application range is greatly limited.
In conclusion, the preparation of the mineral volcanic rock refractory bus has important significance in solving the problems.
Disclosure of Invention
The invention aims to provide a mineral volcanic rock refractory bus and a processing technology thereof, and aims to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
a composition for a fire resistant busbar comprising the following: 66 to 74 parts of mineral volcanic rock, 1 to 2 parts of compound silane coupling agent and 25 to 32 parts of resin composition by weight;
further, the compound silane coupling agent comprises basic amino acid, a micromolecule coupling agent and a macromolecule coupling agent in a mass ratio of (0.5 to 0.8) to (2.2 to 2.5) to 1; the basic amino acid is lysine, the small molecule coupling agent is KH-550, and the large molecule coupling agent is A-1387;
further, the resin composition comprises the following: 15-20 parts of bisphenol epoxy resin, 7-9 parts of amine curing agent, 2.8-2.9 parts of flexibilizer and 0.1-0.2 part of curing accelerator by weight;
further, the mineral volcanic rock comprises the following substances: according to parts by weight, 18 to 22 parts of volcanic rock, 18 to 22 parts of zirconium dioxide, 18 to 22 parts of chromium oxide and 8 to 12 parts of quartz sand.
Further, the amine curing agent is aromatic polyamine, and comprises one or more of 4,4' -diaminodiphenyl sulfone, diaminodiphenylmethane and diethyl toluenediamine; the curing accelerator is boron trifluoride complex.
Further, the toughening agent is prepared from phenyl tri (dimethylsiloxy) silane, magnolol, allyl glycidyl ether and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide in a mass ratio of 1 (1.2) - (1.5) (0.5) - (0.8) (0.4) - (0.5).
Further, the composition for the fire-resistant bus is used for preparing a mineral volcanic rock fire-resistant bus; the method comprises the following steps:
step 1: weighing volcanic rock, zirconium dioxide, chromium oxide and quartz sand, and uniformly mixing to obtain mineral volcanic rock; weighing and uniformly mixing basic amino acid, a small molecule coupling agent and a large molecule coupling agent to obtain a compound silane coupling agent; weighing bisphenol epoxy resin, amine curing agent, toughening agent and curing accelerator for later use;
step 2: dispersing the compound silane coupling agent in an ethanol water solution; adding hydrochloric acid to adjust the pH to be =4.0 to 4.5; adding mineral volcanic rock, stirring and reacting at 60-80 ℃ for 6-8 hours, washing and drying to obtain a modified filler;
and step 3: sequentially adding bisphenol epoxy resin, a curing agent, a toughening agent, a modified filler and a curing accelerator into a stirrer, and uniformly stirring; obtaining a composition for a fire-resistant bus;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating, and degassing; setting the temperature to be 90-120 ℃, curing for 1-3 hours, and demolding to obtain the mineral volcanic rock refractory bus.
Further, the preparation method of the toughening agent comprises the following steps: adding phenyl tri (dimethylsiloxane) silane into a reaction kettle under inert gas, setting the temperature to be 90-110 ℃, adding a catalyst, dropwise adding magnolol and allyl glycidyl ether for 1-1.5 hours, and reacting for 2-3 hours; adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 150 to 160 ℃, and reacting for 3 to 4 hours; purifying and drying to obtain the toughening agent.
In the technical scheme, in order to solve the problem of dispersibility of high-content mineral volcanic rock (inorganic filler) in epoxy resin, the composite silane coupling agent is used for modification, so that the dispersibility and compatibility are effectively enhanced; meanwhile, the toughening agent is introduced, so that the mechanical property of the fire-resistant bus is improved, and the engineering application range is further widened.
(1) Because the content of the mineral volcanic rock in the scheme is very high, and the viscosity of the epoxy resin is also relatively high, the epoxy resin has poor dispersibility and interface action, and the mechanical property of the fire-resistant bus is influenced. The dispersion of the coupling agent is a common means, but generally, in order to enhance the dispersibility, a large amount of coupling agent is added, but hydrophilic groups in a molecular structure of the coupling agent have high water absorption, and the introduction amount is too large, so that the water resistance of the fire-resistant bus is influenced; and may result in insufficient bond strength in the system, affecting mechanical properties. And the introduced amount is too small, the uniform dispersibility is weakened, and the mechanical property is reduced.
Therefore, in the scheme, three substances, namely basic amino acid (lysine), small molecule coupling agent (KH-550) and macromolecular coupling agent (A-1387), are introduced; the reasonable proportion is optimized, and the electrostatic repulsion of amino groups among all substances and the medium-long chain of the macromolecular coupling agent are utilized to improve the dispersibility of the compound silane coupling agent in the epoxy resin under the condition of less introduction amount of the compound silane coupling agent; and the surface modified amino can well improve the reaction compatibility and increase the interface acting force. On the other hand, the existing lysine contains carboxyl, which can promote the curing of the amine curing agent and reduce the curing time and the shrinkage rate.
(2) In the resin composition, a bisphenol type epoxy resin, which is an epoxy resin having a large yield, is used. And the amine curing agent is used as the curing agent, and compared with other curing agents, the amine curing agent has fewer oxygen-containing groups and better high-temperature performance and waterproof performance. Common aliphatic amines are not used in the amine curing agent, so that the reaction activity is high, the curing is too fast in the pouring process, and local bubbles and local heat exist to influence the overall mechanical property and the electrical property. Therefore, aromatic amine is used as a curing agent in the scheme, so that the high-temperature performance, the electrical performance and the aging resistance of the bus are ensured.
(3) Due to the introduction of long chains in the macromolecular coupling agent, the chain segment motion in the epoxy resin structure is increased, the curing efficiency is reduced, and the curing temperature is increased. Therefore, in the scheme, the curing process of the composition for the fire-resistant bus is promoted by introducing amino acid containing carboxyl, introducing a flexibilizer containing phenolic hydroxyl and using a boron trifluoride complex as a synergistic accelerator.
(4) In the scheme, the toughening agent is prepared by performing hydrosilylation on silicon hydride in phenyl tri (dimethylsiloxy alkyl) silane and double bonds in magnolol and double bonds in allyl glycidyl ether, and then performing ring-opening reaction between an epoxy group in the allyl glycidyl ether and a phosphorus-containing group in 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.
The benzene ring in phenyl tri (dimethylsiloxy) silane, the biphenyl structure of magnolol, the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide benzene-containing structure and the benzene-containing chain segment in bisphenol A have certain similar compatibility, and on the other hand, the magnolol contains phenolic hydroxyl, so that the curing can be promoted, and the introduced magnolol containing phenolic hydroxyl can complement the reduction of the curing speed because the toughening agent contains more benzene structures and can block the flow of a molecular chain and reduce the curing speed. Meanwhile, after the 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide is introduced for ring opening, hydroxyl exists, so that the system viscosity of the epoxy resin is reduced after the toughening agent is introduced, the dispersibility of the mineral volcanic rock is improved, and the curing efficiency is promoted.
Therefore, the introduction of the toughening agent is cooperated with the compound coupling agent, so that the impact resistance of the fire-resistant bus is obviously improved on the basis of ensuring the curing rate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the following examples, the bisphenol type epoxy resin was Hensman GY-285 epoxy resin (Viruna chemical Co., ltd., guangzhou); phenyl tris (dimethylsiloxy) silane (Nanjing Bamuda Biotech Co., ltd.), magnolol (Nanjing Bamuda Biotech Co., ltd.), allyl glycidyl ether (Nanjing Toyobo Industrial Co., ltd.), lysine (Hubei Jusheng Tech Co., ltd.), KH-550 (Yicheng Tianyang chemical Co., ltd.), A-1387 (Fushan Dow Ningsu chemical Co., ltd.), 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO, nanjing Bamuda Biotech Co., ltd.), boron trifluoride complex is boron trifluoride monoethylamine complex (Aladdin reagent).
The application temperature of the volcanic rock is 2200 ℃, the specification is 1 to 3mm, the Jilin Wuda Lianchi refractory material factory, the zirconium dioxide is more than or equal to 99 percent, and the volume density is 5.85g/cm 3 (mineral refractory material factory with 320 meshes, sanmenxia city of Henan, china), chromium oxide not less than 99%, and volume density of 4.25g/cm 3 (mineral refractory material factory of Sanxia city, henan, 320 meshes), quartz sand (specification of 0.1 to 1mm, shijiazhuang Fenghua mineral products, ltd.).
Example 1:
step 1: (1) Adding 100g of phenyltri (dimethylsiloxy) silane into a reaction kettle under inert gas, setting the temperature to be 105 ℃, adding 0.1g of chloroplatinic acid, dropwise adding 140g of magnolol and 60g of allyl glycidyl ether for 1 hour, and reacting for 3 hours; adding 45g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 155 ℃, and reacting for 4 hours; purifying and drying to obtain the toughening agent.
(2) Weighing 2kg of volcanic rock, 2kg of zirconium dioxide, 2kg of chromium oxide and 1kg of quartz sand, and uniformly mixing to obtain 7kg of mineral volcanic rock;
weighing 0.03kg of lysine, 0.12kg of KH-550 and 0.05kg of A-1387, and uniformly mixing to obtain 0.2kg of compound silane coupling agent;
weighing 1.8kg of bisphenol type epoxy resin, 0.9kg of 4,4' -diaminodiphenyl sulfone, 0.29kg of toughening agent and 0.01kg of boron trifluoride complex for later use;
step 2: dispersing 0.2kg of compound silane coupling agent in 10kg of ethanol-water (the volume ratio of ethanol to water is 95; adding hydrochloric acid to adjust the pH =4.2; adding mineral volcanic rock, stirring and reacting for 8 hours at 75 ℃, washing and drying to obtain a modified filler;
and 3, step 3: sequentially adding bisphenol epoxy resin, 4' -diaminodiphenyl sulfone, a flexibilizer, a modified filler and a boron trifluoride complex into a stirrer, and uniformly stirring to obtain a composition for a fire-resistant bus;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating for 3 minutes, and degassing; setting the temperature at 115 ℃ for curing for 2 hours, and demolding to obtain the mineral volcanic refractory bus.
Example 2:
step 1: (1) Adding 100g of phenyltri (dimethylsiloxy) silane into a reaction kettle under inert gas, setting the temperature to be 90 ℃, adding 0.1g of chloroplatinic acid, dropwise adding 120g of magnolol and 80g of allyl glycidyl ether for 1.5 hours, and reacting for 3 hours; adding 50g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 160 ℃, and reacting for 3 hours; purifying and drying to obtain the toughening agent.
(2) Weighing 2.2kg of volcanic rock, 1.8kg of zirconium dioxide, 1.8kg of chromium oxide and 0.8kg of quartz sand, and uniformly mixing to obtain 6.6kg of mineral volcanic rock;
weighing 0.025kg of lysine, 0.125kg of KH-550 and 0.05kg of A-1387, and uniformly mixing to obtain 0.2kg of compound silane coupling agent;
weighing 2.0kg of bisphenol type epoxy resin, 0.9kg of 4,4' -diaminodiphenyl sulfone, 0.28kg of toughening agent and 0.02kg of boron trifluoride complex for later use;
and 2, step: dispersing 0.2kg of compound silane coupling agent in 10kg of ethanol (the volume ratio of ethanol to water is 95; adding hydrochloric acid to adjust the pH =4.3; adding mineral volcanic rock, stirring and reacting for 8 hours at 75 ℃, washing and drying to obtain a modified filler;
and step 3: sequentially adding bisphenol epoxy resin, 4' -diaminodiphenyl sulfone, a flexibilizer, a modified filler and a boron trifluoride complex into a stirrer, and uniformly stirring to obtain a composition for a fire-resistant bus;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating for 3 minutes, and degassing; setting the temperature at 115 ℃ for curing for 2 hours, and demolding to obtain the mineral volcanic refractory bus.
Example 3:
step 1: (1) Adding 100g of phenyltri (dimethylsiloxy) silane into a reaction kettle under inert gas, setting the temperature to be 110 ℃, adding 0.1g of chloroplatinic acid, dropwise adding 150g of magnolol and 50g of allyl glycidyl ether for 1 hour, and reacting for 3 hours; adding 40g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 150 ℃, and reacting for 4 hours; purifying and drying to obtain the toughening agent.
(2) Weighing 1.8kg of volcanic rock, 2.2kg of zirconium dioxide, 2.2kg of chromium oxide and 1.2kg of quartz sand, and uniformly mixing to obtain 7.4kg of mineral volcanic rock;
weighing 0.04kg of lysine, 0.11kg of KH-550 and 0.05kg of A-1387, and uniformly mixing to obtain 0.2kg of compound silane coupling agent;
weighing 1.5kg of bisphenol type epoxy resin, 0.7kg of 4,4' -diaminodiphenyl sulfone, 0.29kg of flexibilizer and 0.01kg of boron trifluoride complex for later use;
and 2, step: dispersing 0.2kg of compound silane coupling agent in 10kg of ethanol-water (the volume ratio of ethanol to water is 95; adding hydrochloric acid to adjust the pH =4.0; adding mineral volcanic rock, stirring and reacting for 8 hours at 75 ℃, washing and drying to obtain modified filler;
and step 3: sequentially adding bisphenol epoxy resin, 4' -diaminodiphenyl sulfone, a flexibilizer, a modified filler and a boron trifluoride complex into a stirrer, and uniformly stirring to obtain a composition for a fire-resistant bus;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating for 3 minutes, and degassing; setting the temperature at 115 ℃ for curing for 2 hours, and demolding to obtain the mineral volcanic refractory bus.
Comparative example 1: in the compound silane coupling agent, lysine is not introduced, and the rest is the same as that in the embodiment 1;
step 1: (1) Adding 100g of phenyltri (dimethylsiloxy) silane into a reaction kettle under inert gas, setting the temperature to be 105 ℃, adding 0.1g of chloroplatinic acid, dropwise adding 140g of magnolol and 60g of allyl glycidyl ether for 1 hour, and reacting for 3 hours; adding 45g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 155 ℃, and reacting for 4 hours; purifying and drying to obtain the toughening agent.
(2) Weighing 2kg of volcanic rock, 2kg of zirconium dioxide, 2kg of chromium oxide and 1kg of quartz sand, and uniformly mixing to obtain 7kg of mineral volcanic rock;
0.15kg of KH-550 and 0.05kg of A-1387 are weighed and mixed evenly to obtain 0.2kg of compound silane coupling agent;
weighing 1.8kg of bisphenol type epoxy resin, 0.9kg of 4,4' -diaminodiphenyl sulfone, 0.29kg of toughening agent and 0.01kg of boron trifluoride complex for later use;
step 2: dispersing 0.2kg of compound silane coupling agent in 10kg of ethanol-water (the volume ratio of ethanol to water is 95; adding hydrochloric acid to adjust the pH =4.2; adding mineral volcanic rock, stirring and reacting for 8 hours at 75 ℃, washing and drying to obtain modified filler;
and step 3: sequentially adding bisphenol epoxy resin, 4' -diamino diphenyl sulfone, a toughening agent, a modified filler and a boron trifluoride complex compound into a stirrer, and uniformly stirring to obtain a composition for a fire-resistant bus;
and 4, step 4: uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating for 3 minutes, and degassing; setting the temperature at 115 ℃ for curing for 2 hours, and demolding to obtain the mineral volcanic refractory bus.
Comparative example 2: KH-550 is not introduced into the compound silane coupling agent, and the rest is the same as that in the example 1;
step 1: (1) Adding 100g of phenyltri (dimethylsiloxy) silane into a reaction kettle under inert gas, setting the temperature to be 105 ℃, adding 0.1g of chloroplatinic acid, dropwise adding 140g of magnolol and 60g of allyl glycidyl ether for 1 hour, and reacting for 3 hours; adding 45g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 155 ℃, and reacting for 4 hours; purifying and drying to obtain the toughening agent.
(2) Weighing 2kg of volcanic rock, 2kg of zirconium dioxide, 2kg of chromium oxide and 1kg of quartz sand, and uniformly mixing to obtain 7kg of mineral volcanic rock;
0.05kg of lysine and 0.15kg of A-1387 are weighed and mixed evenly to obtain 0.2kg of compound silane coupling agent.
Weighing 1.8kg of bisphenol type epoxy resin, 0.9kg of 4,4' -diaminodiphenyl sulfone, 0.29kg of toughening agent and 0.01kg of boron trifluoride complex for later use;
step 2: dispersing 0.2kg of a compound silane coupling agent in 10kg of ethanol-water (the volume ratio of ethanol to water is 95; adding hydrochloric acid to adjust the pH =4.2; adding mineral volcanic rock, stirring and reacting for 8 hours at 75 ℃, washing and drying to obtain modified filler;
and step 3: sequentially adding bisphenol epoxy resin, 4' -diamino diphenyl sulfone, a toughening agent, a modified filler and a boron trifluoride complex compound into a stirrer, and uniformly stirring to obtain a composition for a fire-resistant bus;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating for 3 minutes, and degassing; setting the temperature at 115 ℃ for curing for 2 hours, and demolding to obtain the mineral volcanic refractory bus.
Comparative example 3: the introduction amount of the compound silane coupling agent is increased, and the rest is the same as that of the embodiment 1;
step 1: (1) Adding 100g of phenyltri (dimethylsiloxy) silane into a reaction kettle under inert gas, setting the temperature to be 105 ℃, adding 0.1g of chloroplatinic acid, dropwise adding 140g of magnolol and 60g of allyl glycidyl ether for 1 hour, and reacting for 3 hours; adding 45g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 155 ℃, and reacting for 4 hours; purifying and drying to obtain the toughening agent.
(2) Weighing 2kg of volcanic rock, 2kg of zirconium dioxide, 2kg of chromium oxide and 1kg of quartz sand, and uniformly mixing to obtain 7kg of mineral volcanic rock;
weighing 0.06kg of lysine, 0.24kg of KH-550 and 0.1kg of A-1387, and uniformly mixing to obtain 0.4kg of compound silane coupling agent;
weighing 1.8kg of bisphenol type epoxy resin, 0.9kg of 4,4' -diaminodiphenyl sulfone, 0.29kg of toughening agent and 0.01kg of boron trifluoride complex for later use;
step 2: dispersing 0.4kg of compound silane coupling agent in 10kg of ethanol-water (the volume ratio of ethanol to water is 95; adding hydrochloric acid to adjust the pH =4.2; adding mineral volcanic rock, stirring and reacting for 8 hours at 75 ℃, washing and drying to obtain a modified filler;
and 3, step 3: sequentially adding bisphenol epoxy resin, 4' -diaminodiphenyl sulfone, a flexibilizer, a modified filler and a boron trifluoride complex into a stirrer, and uniformly stirring to obtain a composition for a fire-resistant bus;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating for 3 minutes, and degassing; setting the temperature at 115 ℃ for curing for 2 hours, and demolding to obtain the mineral volcanic refractory bus.
Comparative example 4: the introduced amount of the toughening agent is increased, and the rest is the same as that of the embodiment 1;
step 1: (1) Adding 100g of phenyltri (dimethylsiloxy) silane into a reaction kettle under inert gas, setting the temperature to be 105 ℃, adding 0.1g of chloroplatinic acid, dropwise adding 140g of magnolol and 60g of allyl glycidyl ether for 1 hour, and reacting for 3 hours; adding 45g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 155 ℃, and reacting for 4 hours; purifying and drying to obtain the toughening agent.
(2) Weighing 2kg of volcanic rock, 2kg of zirconium dioxide, 2kg of chromium oxide and 1kg of quartz sand, and uniformly mixing to obtain 7kg of mineral volcanic rock;
weighing 0.03kg of lysine, 0.12kg of KH-550 and 0.05kg of A-1387, and uniformly mixing to obtain 0.2kg of compound silane coupling agent;
weighing 1.8kg of bisphenol type epoxy resin, 0.9kg of 4,4' -diaminodiphenyl sulfone, 0.5kg of toughening agent and 0.01kg of boron trifluoride complex for later use;
step 2: dispersing 0.2kg of a compound silane coupling agent in 10kg of ethanol-water (the volume ratio of ethanol to water is 95; adding hydrochloric acid to adjust the pH =4.2; adding mineral volcanic rock, stirring and reacting for 8 hours at 75 ℃, washing and drying to obtain a modified filler;
and 3, step 3: sequentially adding bisphenol epoxy resin, 4' -diaminodiphenyl sulfone, a flexibilizer, a modified filler and a boron trifluoride complex into a stirrer, and uniformly stirring to obtain a composition for a fire-resistant bus;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating for 3 minutes, and degassing; setting the temperature at 115 ℃ for curing for 2 hours, and demolding to obtain the mineral volcanic refractory bus.
Comparative example 5: in the toughening agent, magnolol is not introduced, and the rest is the same as that in the example 1;
step 1: (1) Adding 100g of phenyltri (dimethylsiloxy) silane into a reaction kettle under inert gas, setting the temperature to be 105 ℃, adding 0.1g of chloroplatinic acid, and dropwise adding 200g of allyl glycidyl ether for 1 hour to react for 3 hours; adding 45g of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 155 ℃, and reacting for 4 hours; purifying and drying to obtain the toughening agent.
(2) Weighing 2kg of volcanic rock, 2kg of zirconium dioxide, 2kg of chromium oxide and 1kg of quartz sand, and uniformly mixing to obtain 7kg of mineral volcanic rock;
weighing 0.03kg of lysine, 0.12kg of KH-550 and 0.05kg of A-1387, and uniformly mixing to obtain 0.2kg of compound silane coupling agent;
weighing 1.8kg of bisphenol type epoxy resin, 0.9kg of 4,4' -diaminodiphenyl sulfone, 0.29kg of toughening agent and 0.01kg of boron trifluoride complex for later use;
and 2, step: dispersing 0.2kg of compound silane coupling agent in 10kg of ethanol-water (the volume ratio of ethanol to water is 95; adding hydrochloric acid to adjust the pH =4.2; adding mineral volcanic rock, stirring and reacting for 8 hours at 75 ℃, washing and drying to obtain modified filler;
and step 3: sequentially adding bisphenol epoxy resin, 4' -diaminodiphenyl sulfone, a flexibilizer, a modified filler and a boron trifluoride complex into a stirrer, and uniformly stirring to obtain a composition for a fire-resistant bus;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus into a mold; placing on a vibration platform, vibrating for 3 minutes, and degassing; setting the temperature at 115 ℃ for curing for 2 hours, and demolding to obtain the mineral volcanic refractory bus.
Experiment 1: the mineral volcanic rock refractory bus prepared in example 1 was subjected to basic performance evaluation. Referring to the standard GB/T7251.6-2005 and the Standard GA/T537-2005 of the Ministry of public Security, the spray test of the fire resistance is as follows: the water spraying rate is 12.5L/min, the voltage is maintained after spraying for 15min, the fuse is not fused, and the bulb is not extinguished. The four sides are fired for 180 minutes, the power supply is stopped and then the power is continuously supplied for 15 minutes, in the fire resistance test process, the bulb is not extinguished, and the leakage current does not reach 3A. Water resistance: the waterproof grade is rated under the condition that the fire hydrant can resist violent water spraying of the fire hydrant and can be free from the influence of water pressure in deep water of 100-500 meters underwater; extreme cold property is that the product can be directly used at-110 ℃ to see whether the product can work normally; the energy saving performance is a result of using fire resistant bus bars compared to using cables. The voltage stability is that a voltage resistance tester is used for applying test voltage between each phase of the bus duct and between the live conductor and the bus duct shell, the actual measurement value is 3750V/1min, and no breakdown and flashover exist after 1 min.
As a result: (1) Burning in flame at 1000 deg.C for 180 min, spraying for 15min, and powering on normally. (2) The waterproof grade is IP68, can be stuck in water for long time and run, and is suitable for subways, pipe galleries and wharfs. (3) the device can work normally in extremely cold weather at the temperature of-110 ℃; (4) 1 to 1.5 percent of electricity can be saved, the voltage is stable, heat is not transferred, and energy is not consumed; the service life is 100 years.
Experiment 2: the mineral volcanic rock refractory bus prepared in the examples and the comparative examples was subjected to mechanical property test. The impact strength was measured on an XCJ-40 impact tester according to the standard GB/T2571-1995, with an impact velocity of 2.9m/s and a limit deviation of. + -. 10%, and the following results were obtained:
| examples | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 |
| Impact strength (KJ/m) 2 ） | 89.3 | 87.6 | 87.3 | 82.3 | 80.1 | 83.5 | 84.8 | 82.7 |
As a result: the above table demonstrates that: by optimizing the compound coupling agent and the resin composition, the impact resistance of the mineral volcanic refractory bus is obviously improved, and the increasingly developed engineering application requirements can be met. Comparing comparative examples 1 to 5 with example 1, the data show that: in comparative example 1, since lysine was not introduced, the dispersibility was reduced, and at the same time, the volume shrinkage during curing was affected, and the internal stress was increased, so that the impact resistance was decreased; in comparative example 2, KH-550 was not introduced, while the amount of A-1387 was increased to make the curability weaker than that of comparative example 1, so that the impact resistance decreased more than that of comparative example 1; in comparative examples 3 and 4, the mechanical properties are reduced due to the increased introduction of the compound silane coupling agent and the toughening agent; in comparative example 5, since no magnolol was introduced, phenolic hydroxyl groups were reduced, curability was lowered, and impact resistance was lowered.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. 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 (5)
1. A composition for a fire resistant busbar, comprising: the composition for the fire-resistant bus comprises the following substances: 66-74 parts of mineral volcanic rock, 1-2 parts of compound silane coupling agent and 25-32 parts of resin composition by weight; the mineral volcanic rock consists of volcanic rock, zirconium dioxide, chromium oxide and quartz sand;
the compound silane coupling agent comprises basic amino acid, micromolecule coupling agent and macromolecule coupling agent with the mass ratio of (0.5-0.8) to (2.2-2.5) to 1; the basic amino acid is lysine, the small molecule coupling agent is KH-550, and the large molecule coupling agent is A-1387;
the resin composition comprises the following: 15-20 parts of bisphenol epoxy resin, 7-9 parts of amine curing agent, 2.8-2.9 parts of toughening agent and 0.1-0.2 part of curing accelerator by weight;
the compound silane coupling agent is used for modifying the surface of mineral volcanic rock in advance: dispersing the compound silane coupling agent in an ethanol water solution; adding hydrochloric acid to adjust the pH = 4.0-4.5; adding mineral volcanic rock, stirring and reacting for 6-8 hours at the temperature of 60-80 ℃, washing and drying to obtain modified filler;
the toughening agent is prepared from phenyl tri (dimethylsiloxy) silane, magnolol, allyl glycidyl ether and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide in a mass ratio of 1 (1.2-1.5) to (0.5-0.8) to (0.4-0.5).
2. The composition for the fire resistant busbar according to claim 1, wherein: the mineral volcanic rock comprises the following substances: according to the weight portion, 18 to 22 portions of volcanic rock, 18 to 22 portions of zirconium dioxide, 18 to 22 portions of chromic oxide and 8 to 12 portions of quartz sand.
3. The composition for a fire resistant busbar according to claim 1, wherein: the amine curing agent is aromatic polyamine and comprises one or more of 4,4' -diaminodiphenyl sulfone, diaminodiphenylmethane and diethyl toluenediamine; the curing accelerator is boron trifluoride complex.
4. A processing technology of mineral volcanic rock fire-resistant bus is characterized in that: the method comprises the following steps:
step 1: weighing volcanic rock, zirconium dioxide, chromium oxide and quartz sand, and uniformly mixing to obtain mineral volcanic rock; weighing and uniformly mixing alkaline amino acid, a small molecule coupling agent and a large molecule coupling agent to obtain a compound silane coupling agent; weighing bisphenol epoxy resin, amine curing agent, toughening agent and curing accelerator for later use;
and 2, step: dispersing the compound silane coupling agent in an ethanol water solution; adding hydrochloric acid to adjust the pH = 4.0-4.5; adding mineral volcanic rock, stirring and reacting for 6-8 hours at the temperature of 60-80 ℃, washing and drying to obtain modified filler;
and step 3: sequentially adding bisphenol type epoxy resin, a curing agent, a toughening agent, a modified filler and a curing accelerator into a stirrer, and uniformly stirring; obtaining a composition for a fire-resistant busbar according to any one of claims 1 to 3;
and 4, step 4: fixing the tinned bus copper bars in a die in sequence; uniformly pouring the composition for the refractory bus prepared in the step 3 into a mold; placing on a vibration platform, vibrating, and degassing; setting the temperature at 90-120 ℃, curing for 1-3 hours, and demoulding to obtain the mineral volcanic rock refractory bus.
5. The processing technology of the mineral volcanic rock refractory bus bar as claimed in claim 4, wherein the processing technology comprises the following steps: the preparation method of the toughening agent comprises the following steps: under inert gas, adding phenyl tri (dimethylsiloxy alkyl) silane into a reaction kettle, setting the temperature to be 90-110 ℃, adding a catalyst, dropwise adding magnolol and allyl glycidyl ether for 1-1.5 hours, and reacting for 2-3 hours; adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heating to 150-160 ℃, and reacting for 3-4 hours; purifying and drying to obtain the toughening agent.
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Effective date of registration: 20240415 Address after: No.8, Nanzi Road, Xinba science and Technology Park, Yangzhong City, Zhenjiang City, Jiangsu Province, 212200 Patentee after: JIANGSU YINQING ELECTRIC Co.,Ltd. Country or region after: China Address before: No. 42, Changhong North Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province 212200 Patentee before: Jiangsu Yingju Electric Co.,Ltd. Country or region before: China |