CN115584196A - Rail trolley bus pantograph insulation coating and preparation method thereof - Google Patents
Rail trolley bus pantograph insulation coating and preparation method thereof Download PDFInfo
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- CN115584196A CN115584196A CN202211078780.2A CN202211078780A CN115584196A CN 115584196 A CN115584196 A CN 115584196A CN 202211078780 A CN202211078780 A CN 202211078780A CN 115584196 A CN115584196 A CN 115584196A
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- 238000000576 coating method Methods 0.000 title claims abstract description 37
- 239000011248 coating agent Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000009413 insulation Methods 0.000 title claims description 19
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 239000012024 dehydrating agents Substances 0.000 claims abstract description 22
- 239000004970 Chain extender Substances 0.000 claims abstract description 17
- 239000004359 castor oil Substances 0.000 claims abstract description 17
- 235000019438 castor oil Nutrition 0.000 claims abstract description 17
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 17
- 229920001577 copolymer Polymers 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 14
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 14
- 230000002378 acidificating effect Effects 0.000 claims abstract description 13
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 239000003063 flame retardant Substances 0.000 claims abstract description 12
- 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 10
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 18
- 239000012974 tin catalyst Substances 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 14
- 238000004806 packaging method and process Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 239000003973 paint Substances 0.000 claims description 13
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 12
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000013530 defoamer Substances 0.000 claims description 10
- 229920000570 polyether Polymers 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 239000003094 microcapsule Substances 0.000 claims description 7
- -1 3, 5-diamino-4-chlorobenzoic acid isobutyl alcohol ester Chemical class 0.000 claims description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 2
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N iso-butyl alcohol Natural products CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims description 2
- 229940035429 isobutyl alcohol Drugs 0.000 claims description 2
- DMTRWFMFBIMXBX-UHFFFAOYSA-L lead(2+);6-methylheptanoate Chemical compound [Pb+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O DMTRWFMFBIMXBX-UHFFFAOYSA-L 0.000 claims description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 2
- 239000000347 magnesium hydroxide Substances 0.000 claims description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 2
- 239000013638 trimer Substances 0.000 claims description 2
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 2
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000015556 catabolic process Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 229920005862 polyol Polymers 0.000 description 11
- 150000003077 polyols Chemical class 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3237—Polyamines aromatic
- C08G18/3243—Polyamines aromatic containing two or more aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/6576—Compounds of group C08G18/69
- C08G18/6582—Compounds of group C08G18/69 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6594—Compounds of group C08G18/69 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of C08G18/3225 or C08G18/3271 or polyamines of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a bow-receiving insulating coating for a track trolley bus and a preparation method thereof, wherein the coating consists of a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-30 parts of hydroxyl-terminated butadiene, 10-30 parts of castor oil polyhydric alcohol, 10-30 parts of a chain extender, 0.1-5-120 parts of a catalyst, 0.1-5 parts of a dispersant of an acidic group-containing copolymer solution, 10-50 parts of a flame retardant, 0.5-5 parts of an adhesion promoter and 0.1-3 parts of a catalyst; wherein the component B comprises the following raw materials in parts by weight: 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent, and under the condition of low temperature, the material has excellent breakdown voltage and pressure resistance test performance. During preparation, the temperature required by the reaction is low, and the method is suitable for industrial production.
Description
Technical Field
The invention belongs to the preparation technology of insulating paint, and particularly relates to a streetcar pantograph insulating paint and a preparation method thereof.
Background
In recent years, high-speed rails, subways and the like in China are rapidly developed. At present, the rail transit industry continuously nationalizes a plurality of parts and vehicle body coating materials, but the pantograph insulation coating mainly depends on the Japan Germany import, has high price and short supply, so the domestication pantograph insulation coating is very important.
The research on the formula of the novel bow-receiving insulating coating with the high breakdown-resistant function has great significance in improving the comprehensive performance of the insulating part of the bow-receiving platform equipment in a corrosive environment.
The breakdown voltage of the traditional epoxy or polyester insulating coating is generally below 30KV, and the performance requirement of imported products of 58KV high-speed train parts cannot be met.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a pantograph insulation coating of a track trolley and a preparation method thereof, which aims to solve the problems of high price and supply shortage of pantograph insulation coatings mainly depending on import of Japan and Germany. And the breakdown voltage of the traditional epoxy or polyester insulating coating in China is generally below 30KV, the requirement on the performance of the imported product 58KV high-speed train parts cannot be met, and performance breakthrough needs to be sought.
The technical scheme of the invention is as follows: the utility model provides a tram pantograph insulating paint which characterized in that: the coating consists of a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-30 parts of hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol, 10-30 parts of a chain extender, 0.1-5-120 parts of a catalyst, 0.1-5 parts of a dispersant of an acid group-containing copolymer solution, 0.1-5 parts of a polyether modified organic silicon defoamer, 10-50 parts of a flame retardant, 0.5-5 parts of an adhesion promoter and 0.1-3 parts of a catalyst; wherein the component B comprises the following raw materials in parts by weight: 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent.
The pantograph insulation coating for the rail tramcar is characterized by comprising the following components in parts by weight: the hydroxyl-terminated butadiene is one or two of the hydroxyl-terminated butadienes with the molecular weight of 1000-3000.
The bow-receiving insulating coating for the rail trolley bus is characterized in that: the castor oil polyhydric alcohol has one or two of a hydroxyl value of 150-250mgKOH/g and a functionality of 2-3.
The pantograph insulation coating for the rail tramcar is characterized by comprising the following components in parts by weight: the chain extender is one or two of 3,3' -dichloro-4, 4-diaminodiphenylmethane or 3, 5-diamino-4-chlorobenzoic acid isobutyl alcohol ester.
The bow-receiving insulating coating for the rail trolley bus is characterized in that: the catalyst is one or two of an organic tin catalyst or lead isooctanoate.
The pantograph insulation coating for the rail tramcar is characterized by comprising the following components in parts by weight: the flame retardant filler is at least one of aluminum hydroxide, magnesium hydroxide, ammonium polyphosphate, triphenyl phosphate and a nitrogen-phosphorus halogen-free flame retardant coated on the surface of the microcapsule.
The bow-receiving insulating coating for the rail trolley bus is characterized in that: the polyisocyanate in the curing agent is one or a mixture of hexamethylene diisocyanate trimer and diphenylmethane diisocyanate.
The preparation method of the pantograph insulation coating for the track trolley comprises the following steps of:
step (1), preparing raw materials according to parts by weight; 10 to 30 parts of hydroxyl-terminated butadiene, 10 to 30 parts of castor oil polyhydric alcohol, 10 to 30 parts of chain extender, 0.1 to 5 parts of catalyst and 0.1 to 5 parts of dispersant of copolymer solution containing acidic groups, 0.1 to 5 parts of polyether modified organic silicon defoamer are fully mixed and stirred;
and (3) cooling, stirring the adhesion promoter and the catalyst, fully mixing, stirring, filtering and packaging.
The preparation method of the pantograph insulation coating for the track trolley comprises the following steps of:
step (1), preparing raw materials according to parts by weight; 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent.
And (2) fully mixing and stirring 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent, filtering and packaging.
The composition A and the composition B of the bow-receiving insulating coating for the track trolley are constructed according to the mass ratio of 2 to 1.
The invention has the beneficial effects that:
compared with the prior art, the invention has the advantages that: (1) The bow-receiving insulating coating can realize room-temperature self-curing, and the equipment is convenient to insulate and reform; (2) hundred percent solid content, no VOC release; (3) The invention has various performances such as excellent electrical insulation, thermal conductivity, flame retardance and the like, can meet the requirement of external insulation of the distribution rail electric car, prolongs the service life of the electric car and ensures safe and stable operation.
Solves the problems of high price and supply shortage of the existing imported products.
The breakdown voltage of the traditional epoxy or polyester insulating coating in China is generally below 30KV, the requirement on the performance of the parts of the 58KV high-speed train of the imported product cannot be met, and performance breakthrough is achieved.
The specific implementation mode is as follows:
the bow-receiving insulating coating for the track electric car is designed aiming at the insulating protection of track electric car equipment, can realize the insulating transformation at normal temperature, does not need the steps of heating or baking and the like, and has the advantages of simple and convenient operation, high efficiency and reliable performance. In addition, the pantograph insulation coating has various performances of excellent electrical insulation, thermal conductivity, flame retardance and the like, and can meet the requirement of external insulation of a pantograph platform of a railway electric car.
Comparative example 1
The component A comprises the following raw materials in parts by weight: 10-30 parts of 1000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with the hydroxyl value of 200mgKOH/g and the functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5-120 parts of organic tin catalyst, 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of polyether modified organic silicon defoamer, 10-50 parts of nitrogen-phosphorus flame retardant coated on the surface of microcapsule, and 0.5-5 parts of halogen-free accelerator; wherein the component B comprises the following raw materials in parts by weight: 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
The pantograph insulation coating is prepared by the following preparation method:
and (2) component A:
step (1), preparing raw materials according to parts by weight; 10-30 parts of 1000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with hydroxyl value of 200mgKOH/g and functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5 parts of organic tin catalyst and 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of polyether modified organic silicon defoamer, and fully mixing and stirring;
and (3) cooling the mixture in the step (2), stirring the adhesion promoter and the organic tin catalyst, fully mixing and stirring the mixture, filtering and packaging the mixture.
And B component:
step (1), preparing raw materials according to parts by weight; 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
And (2) fully mixing and stirring 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent, filtering and packaging.
A. And constructing the component B according to the mass ratio of 1.8 to 1.
Example 1
The component A comprises the following raw materials in parts by weight: 10-30 parts of 2000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with the hydroxyl value of 200mgKOH/g and the functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5-120 parts of organic tin catalyst, 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of microcapsule surface-coated nitrogen-phosphorus flame retardant, and 0.5-5 parts of halogen-free adhesion promoter; wherein the component B comprises the following raw materials in parts by weight: 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
The pantograph insulation coating is prepared by the following preparation method:
the component A comprises:
step (1), preparing raw materials according to parts by weight; 10-30 parts of 1000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with hydroxyl value of 200mgKOH/g and functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5 parts of organic tin catalyst and 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of polyether modified organic silicon defoamer, and fully mixing and stirring;
and (3) cooling, stirring the adhesion promoter and the organic tin catalyst, fully mixing, stirring, filtering and packaging.
And B component:
step (1), preparing raw materials according to parts by weight; 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
And (2) fully mixing and stirring 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent, filtering and packaging.
A. And constructing the component B according to the mass ratio of 1.8 to 1.
Example 2
The component A comprises the following raw materials in parts by weight: 10-30 parts of 2000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with the hydroxyl value of 200mgKOH/g and the functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5-120 parts of organic tin catalyst, 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of microcapsule surface-coated nitrogen-phosphorus flame retardant, and 0.5-5 parts of halogen-free adhesion promoter; wherein the component B comprises the following raw materials in parts by weight: 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
The pantograph insulation coating is prepared by the following preparation method:
the component A comprises:
step (1), preparing raw materials according to parts by weight; 10-30 parts of 1000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with hydroxyl value of 200mgKOH/g and functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5 parts of organic tin catalyst and 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of polyether modified organic silicon defoamer, and fully mixing and stirring;
and (3) cooling the mixture in the step (2), stirring the adhesion promoter and the organic tin catalyst, fully mixing and stirring the mixture, filtering and packaging the mixture.
And the component B comprises:
step (1), preparing raw materials according to parts by weight; 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
And (2) fully mixing and stirring 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent, filtering and packaging.
A. The component B is constructed according to the mass ratio of 2.0 to 1.
Example 3
The component A comprises the following raw materials in parts by weight: 10-30 parts of 1000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with the hydroxyl value of 200mgKOH/g and the functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5-120 parts of organic tin catalyst, 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of polyether modified organic silicon defoamer, 10-50 parts of nitrogen-phosphorus flame retardant coated on the surface of microcapsule, and 0.5-5 parts of halogen-free accelerator; wherein the component B comprises the following raw materials in parts by weight: 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
The bow-receiving insulating paint is prepared by the following preparation method:
the component A comprises:
step (1), preparing raw materials according to parts by weight; 10 to 30 parts of 2000 molecular weight hydroxyl-terminated butadiene, 10 to 30 parts of castor oil polyol with hydroxyl value of 200mgKOH/g and functionality of 2, 10 to 30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1 to 5 parts of organic tin catalyst, 0.1 to 5 parts of dispersant of copolymer solution containing acid groups, and 0.1 to 5 parts of polyether modified organic silicon defoamer;
and (3) cooling the mixture in the step (2), stirring the adhesion promoter and the organic tin catalyst, fully mixing and stirring the mixture, filtering and packaging the mixture.
And B component:
step (1), preparing raw materials according to parts by weight; 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
And (2) fully mixing and stirring 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent, filtering and packaging.
A. And constructing the component B according to the mass ratio of 2.2 to 1.
Example 4
The component A comprises the following raw materials in parts by weight: 10-30 parts of 2000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with the hydroxyl value of 200mgKOH/g and the functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5-120 parts of organic tin catalyst, 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of microcapsule surface-coated nitrogen-phosphorus flame retardant, and 0.5-5 parts of halogen-free adhesion promoter; wherein the component B comprises the following raw materials in parts by weight: 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
The bow-receiving insulating paint is prepared by the following preparation method:
the component A comprises:
step (1), preparing raw materials according to parts by weight; 10-30 parts of 1000 molecular weight hydroxyl-terminated butadiene, 10-30 parts of castor oil polyol with hydroxyl value of 200mgKOH/g and functionality of 2, 10-30 parts of 3,3' -dichloro-4, 4-diaminodiphenylmethane chain extender, 0.1-5 parts of organic tin catalyst and 0.1-5 parts of dispersant of copolymer solution containing acidic groups, 0.1-5 parts of polyether modified organic silicon defoamer, and fully mixing and stirring;
and (3) cooling, stirring the adhesion promoter and the organic tin catalyst, fully mixing, stirring, filtering and packaging.
And the component B comprises:
step (1), preparing raw materials according to parts by weight; 50-100 parts of hexamethylene diisocyanate tripolymer and 0.1-5 parts of dehydrating agent.
And (2) fully mixing and stirring 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent, filtering and packaging.
A. The component B is constructed according to the mass ratio of 2.4 to 1.
The insulation materials prepared in examples 1 to 5 and comparative example 1 were used to prepare standard sample wafers and to test the relevant properties, as shown in table 1 below.
TABLE 1 table of relevant Performance parameters for examples and comparative examples
As can be seen from table 1, the pantograph insulation coating prepared by the method has good breakdown voltage and volume resistivity which are higher than 43kV/mm, and the breakdown voltage and volume resistivity data of a coating film prepared by the hydroxyl-terminated butadiene molecular weight of 1000 in a comparative example are lower; the coating prepared from the hydroxyl-terminated butadiene with the molecular weight of 1000 has better mechanical property and dielectric property; compared with the embodiment 1, the pantograph insulation coating prepared by the embodiments 2 to 4 in the optimized proportion has higher drawing strength and breakdown voltage, and is more beneficial to prolonging the service life of the pantograph insulation coating in a high-corrosion environment.
Claims (10)
1. The utility model provides a tram pantograph insulating paint which characterized in that: the coating consists of a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-30 parts of hydroxyl-terminated butadiene, 10-30 parts of castor oil polyhydric alcohol, 10-30 parts of a chain extender, 0.1-5-120 parts of a catalyst, 0.1-5 parts of a dispersant of an acidic group-containing copolymer solution, 10-50 parts of a flame retardant, 0.5-5 parts of an adhesion promoter and 0.1-3 parts of a catalyst; wherein the component B comprises the following raw materials in parts by weight: 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent.
2. The trolley pantograph insulating paint according to claim 1, wherein: the hydroxyl-terminated butadiene is one or two of the hydroxyl-terminated butadienes with the molecular weight of 1000-3000.
3. The trolley pantograph insulating paint according to claim 1, wherein: the castor oil polyhydric alcohol has one or two of a hydroxyl value of 150-250mgKOH/g and a functionality of 2-3.
4. The railroad car pantograph insulation coating according to claim 1, wherein: the chain extender is one or two of 3,3' -dichloro-4, 4-diaminodiphenylmethane or 3, 5-diamino-4-chlorobenzoic acid isobutyl alcohol ester.
5. The trolley pantograph insulating paint according to claim 1, wherein: the catalyst is one or two of an organic tin catalyst or lead isooctanoate.
6. The trolley pantograph insulating paint according to claim 1, wherein: the flame retardant filler is at least one of aluminum hydroxide, magnesium hydroxide, ammonium polyphosphate, triphenyl phosphate and a nitrogen-phosphorus halogen-free flame retardant coated on the surface of the microcapsule.
7. The trolley pantograph insulating paint according to claim 1, wherein: the polyisocyanate in the curing agent is one or a mixture of hexamethylene diisocyanate trimer and diphenylmethane diisocyanate.
8. The process for preparing pantograph insulating paint for railway trolleys according to claim 1, wherein the component A comprises:
step (1), preparing raw materials according to parts by weight; 10 to 30 parts of hydroxyl-terminated butadiene, 10 to 30 parts of castor oil polyhydric alcohol, 10 to 30 parts of chain extender, 0.1 to 5 parts of catalyst and 0.1 to 5 parts of dispersant of copolymer solution containing acidic groups, 0.1 to 5 parts of polyether modified organic silicon defoamer are fully mixed and stirred;
and (3) cooling, stirring the adhesion promoter and the catalyst, fully mixing, stirring, filtering and packaging.
9. The process for preparing pantograph insulating paint for railway trolleys according to claim 1, wherein the component B comprises:
step (1), preparing raw materials according to parts by weight; 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent;
and (2) fully mixing and stirring 50-100 parts of polyisocyanate and 0.1-5 parts of dehydrating agent, filtering and packaging.
10. The preparation method of the pantograph insulating coating for railway cars as claimed in claim 1, wherein the components A and B are applied according to the mass ratio of 2 to 1.
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Application publication date: 20230110 |