CN110698950A - Insulating powder coating - Google Patents
Insulating powder coating Download PDFInfo
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- CN110698950A CN110698950A CN201910989713.8A CN201910989713A CN110698950A CN 110698950 A CN110698950 A CN 110698950A CN 201910989713 A CN201910989713 A CN 201910989713A CN 110698950 A CN110698950 A CN 110698950A
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- petroleum resin
- powder coating
- fumaric acid
- modified carbon
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- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000000843 powder Substances 0.000 title claims abstract description 59
- 239000011248 coating agent Substances 0.000 title claims abstract description 57
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003822 epoxy resin Substances 0.000 claims abstract description 24
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 24
- 239000004114 Ammonium polyphosphate Substances 0.000 claims abstract description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 244000028419 Styrax benzoin Species 0.000 claims abstract description 20
- 235000000126 Styrax benzoin Nutrition 0.000 claims abstract description 20
- 235000008411 Sumatra benzointree Nutrition 0.000 claims abstract description 20
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims abstract description 20
- 229920001276 ammonium polyphosphate Polymers 0.000 claims abstract description 20
- 229960002130 benzoin Drugs 0.000 claims abstract description 20
- 239000000378 calcium silicate Substances 0.000 claims abstract description 20
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 20
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000019382 gum benzoic Nutrition 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 20
- 239000010703 silicon Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims description 74
- 239000011347 resin Substances 0.000 claims description 74
- 239000003208 petroleum Substances 0.000 claims description 73
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 58
- 239000001530 fumaric acid Substances 0.000 claims description 29
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims description 16
- 239000003054 catalyst Substances 0.000 claims description 13
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 12
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 10
- 229960001763 zinc sulfate Drugs 0.000 claims description 10
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 10
- YSWBFLWKAIRHEI-UHFFFAOYSA-N 4,5-dimethyl-1h-imidazole Chemical group CC=1N=CNC=1C YSWBFLWKAIRHEI-UHFFFAOYSA-N 0.000 claims description 8
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 claims description 8
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 8
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 description 21
- 230000007797 corrosion Effects 0.000 description 21
- 238000002360 preparation method Methods 0.000 description 12
- 239000007921 spray Substances 0.000 description 11
- 239000002253 acid Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 230000007935 neutral effect Effects 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 10
- 239000003513 alkali Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 238000009413 insulation Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 150000001721 carbon Chemical class 0.000 description 5
- XSICAPITQCLQHI-VFQQELCFSA-N C(C=CC(=O)O)(=O)O.OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO Chemical compound C(C=CC(=O)O)(=O)O.OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO XSICAPITQCLQHI-VFQQELCFSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000002715 modification method Methods 0.000 description 3
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000600 sorbitol Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/14—Esterification
-
- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
- C09D5/038—Anticorrosion agents
-
- 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
- C09D5/08—Anti-corrosive paints
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of powder coatings, and particularly discloses an insulating powder coating. The insulating powder coating comprises the following raw material components in parts by weight: 60-80 parts of epoxy resin; 20-30 parts of silicon micropowder; 5-10 parts of calcium silicate; 3-5 parts of ammonium polyphosphate; 1-3 parts of benzoin; 20-40 parts of a curing agent; 1-5 parts of an accelerator; 1-5 parts of a leveling agent. The insulating powder coating provided by the invention has good insulating property.
Description
Technical Field
The invention relates to the technical field of powder coatings, in particular to an insulating powder coating.
Background
With the development of modern science and technology, the electronics and motor industry develops rapidly and develops towards high technology, high efficiency and the like, and the working environment and working conditions also become more diversified, so that higher requirements are put forward on the insulativity of the electronics and the motor. In the past, an 'enameled wire' method is used for achieving an insulation effect, but the method has a large influence on the environment and does not accord with the current theme of environmental protection. The invention aims to develop an insulating powder coating, in particular to an insulating powder coating which can ensure the insulativity of electronic and motor equipment under severe environment so as to prolong the service life of the equipment.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an insulating powder coating; the insulating powder coating has excellent insulating property.
The technical problem to be solved by the invention is realized by the following technical scheme:
an insulating powder coating comprises the following raw material components in parts by weight:
60-80 parts of epoxy resin; 20-30 parts of silicon micropowder; 5-10 parts of calcium silicate; 3-5 parts of ammonium polyphosphate; 1-3 parts of benzoin; 20-40 parts of a curing agent; 1-5 parts of an accelerator; 1-5 parts of a leveling agent.
Preferably, the insulating powder coating comprises the following raw material components in parts by weight:
70-80 parts of epoxy resin; 25-30 parts of silicon micropowder; 8-10 parts of calcium silicate; 4-5 parts of ammonium polyphosphate; 2-3 parts of benzoin; 30-40 parts of a curing agent; 3-5 parts of an accelerator; 3-5 parts of a leveling agent.
Most preferably, the insulating powder coating comprises the following raw material components in parts by weight:
70 parts of epoxy resin; 25 parts of silicon micropowder; 8 parts of calcium silicate; 4 parts of ammonium polyphosphate; 2 parts of benzoin; 30 parts of a curing agent; 3 parts of an accelerant; and 3 parts of a leveling agent.
Preferably, the epoxy resin is E-12(604) epoxy resin.
Preferably, the curing agent is PSG-01 type phenolic curing agent.
Preferably, the promoter is dimethyl imidazole.
Preferably, the flatting agent is a GLP588 type flatting agent.
Preferably, the insulating powder coating also comprises 20-40 parts of modified carbon-nine petroleum resin;
the modified carbon-nine petroleum resin is fumaric acid-stearyl alcohol modified carbon-nine petroleum resin; the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin is prepared by the following method:
(1) mixing the carbon-nine petroleum resin and fumaric acid according to a mass ratio of 5-10: 1, taking dicumyl peroxide as a catalyst, and reacting in a reaction kettle at 190-210 ℃ for 2-3 h to obtain fumaric acid modified carbon-nine petroleum resin;
(2) mixing fumaric acid modified carbon-nine petroleum resin and stearyl alcohol according to a weight ratio of 3-5: 1, and reacting in a reaction kettle at 230-250 ℃ for 3-5 hours by using zinc sulfate as a catalyst to obtain the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin.
Further preferably, the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin is prepared by the following method:
(1) mixing the carbon-nine petroleum resin and fumaric acid according to a mass ratio of 8:1, and reacting for 2.5 hours in a reaction kettle at 200 ℃ by using dicumyl peroxide as a catalyst to obtain fumaric acid modified carbon-nine petroleum resin;
(2) mixing fumaric acid modified carbon-nine petroleum resin and stearyl alcohol according to a weight ratio of 4:1, and reacting for 4h in a reaction kettle at 240 ℃ by using zinc sulfate as a catalyst to obtain the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin.
Preferably, the mass usage amount of dicumyl peroxide in the step (1) is 1-3% of the mass of the carbon-nine petroleum resin; the mass usage amount of the zinc sulfate in the step (2) is 3-5% of the mass of the fumaric acid modified carbon-nine petroleum resin.
The powder coating for insulation is prepared by the following method: uniformly mixing the epoxy resin, the silicon micropowder, the calcium silicate, the ammonium polyphosphate, the benzoin, the curing agent, the accelerator and the flatting agent in parts by weight, extruding by a double-screw extruder, tabletting and crushing, and crushing by a pulverizer to obtain the insulating powder coating.
Has the advantages that: the invention provides a brand new insulating powder coating; the powder coating has excellent insulating property. In addition, the ability of the insulating powder coating in neutral salt spray resistance, acid corrosion resistance, alkali corrosion resistance and the like is greatly improved after the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin prepared by the method is added.
Detailed Description
The present invention is further explained below with reference to specific examples, which are not intended to limit the present invention in any way.
EXAMPLE 1 preparation of insulating powder coating
The raw materials comprise: e-12(604) 70 parts of epoxy resin; 25 parts of silicon micropowder; 8 parts of calcium silicate; 4 parts of ammonium polyphosphate; 2 parts of benzoin; 30 parts of PSG-01 type phenolic curing agent; 3 parts of a dimethyl imidazole accelerator; 3 parts of GLP588 type leveling agent.
The preparation method comprises the following steps: uniformly mixing the epoxy resin, the silicon micropowder, the calcium silicate, the ammonium polyphosphate, the benzoin, the curing agent, the accelerator and the flatting agent in parts by weight, extruding by a double-screw extruder, tabletting and crushing, and crushing by a pulverizer to obtain the insulating powder coating.
EXAMPLE 2 preparation of insulating powder coating
The raw materials comprise: e-12(604) 60 parts of epoxy resin; 20 parts of silicon micropowder; 10 parts of calcium silicate; 3 parts of ammonium polyphosphate; 1 part of benzoin; 20 parts of PSG-01 type phenolic curing agent; 1 part of dimethyl imidazole accelerator; 1 part of GLP588 type leveling agent.
The preparation method comprises the following steps: uniformly mixing the epoxy resin, the silicon micropowder, the calcium silicate, the ammonium polyphosphate, the benzoin, the curing agent, the accelerator and the flatting agent in parts by weight, extruding by a double-screw extruder, tabletting and crushing, and crushing by a pulverizer to obtain the insulating powder coating.
EXAMPLE 3 preparation of insulating powder coating
The raw materials comprise: e-12(604) 80 parts of epoxy resin; 30 parts of silicon micropowder; 5 parts of calcium silicate; 5 parts of ammonium polyphosphate; 3 parts of benzoin; 40 parts of PSG-01 type phenolic curing agent; 5 parts of a dimethyl imidazole accelerator; 5 parts of GLP588 type leveling agent.
The preparation method comprises the following steps: uniformly mixing the epoxy resin, the silicon micropowder, the calcium silicate, the ammonium polyphosphate, the benzoin, the curing agent, the accelerator and the flatting agent in parts by weight, extruding by a double-screw extruder, tabletting and crushing, and crushing by a pulverizer to obtain the insulating powder coating.
EXAMPLE 4 preparation of insulating powder coating
The raw materials comprise: e-12(604) 70 parts of epoxy resin; 30 parts of modified carbon nine petroleum resin; 25 parts of silicon micropowder; 8 parts of calcium silicate; 4 parts of ammonium polyphosphate; 2 parts of benzoin; 30 parts of PSG-01 type phenolic curing agent; 3 parts of a dimethyl imidazole accelerator; 3 parts of GLP588 type leveling agent;
the modified carbon-nine petroleum resin is fumaric acid-stearyl alcohol modified carbon-nine petroleum resin; the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin is prepared by the following method:
(1) mixing carbon-nine petroleum resin (Heng He HHP-1204) and fumaric acid according to a mass ratio of 8:1, and reacting in a reaction kettle at 200 ℃ for 2.5 hours by using dicumyl peroxide as a catalyst to obtain fumaric acid modified carbon-nine petroleum resin;
(2) mixing fumaric acid modified carbon-nine petroleum resin and stearyl alcohol according to a weight ratio of 4:1, and reacting for 4h in a reaction kettle at 240 ℃ by using zinc sulfate as a catalyst to obtain fumaric acid-stearyl alcohol modified carbon-nine petroleum resin;
in the step (1), the mass amount of dicumyl peroxide is 2% of the mass of the carbon-nine petroleum resin; the mass usage amount of the zinc sulfate in the step (2) is 4% of the mass of the fumaric acid modified carbon-nine petroleum resin.
The preparation method comprises the following steps: uniformly mixing the epoxy resin, the modified carbon-nine petroleum resin, the silicon micropowder, the calcium silicate, the ammonium polyphosphate, the benzoin, the curing agent, the accelerator and the flatting agent in parts by weight, extruding the mixture by a double-screw extruder, tabletting and crushing the mixture, and crushing the crushed mixture by a pulverizer to obtain the insulating powder coating.
Comparative example 1 preparation of insulating powder coating
The raw materials comprise: e-12(604) 70 parts of epoxy resin; 30 parts of modified carbon nine petroleum resin; 25 parts of silicon micropowder; 8 parts of calcium silicate; 4 parts of ammonium polyphosphate; 2 parts of benzoin; 30 parts of PSG-01 type phenolic curing agent; 3 parts of a dimethyl imidazole accelerator; 3 parts of GLP588 type leveling agent;
the modified carbon-nine petroleum resin is fumaric acid modified carbon-nine petroleum resin; the fumaric acid modified carbon-nine petroleum resin is prepared by the following method:
(1) mixing carbon-nine petroleum resin (Heng He HHP-1204) and fumaric acid according to a mass ratio of 8:1, and reacting in a reaction kettle at 200 ℃ for 2.5 hours by using dicumyl peroxide as a catalyst to obtain fumaric acid modified carbon-nine petroleum resin; wherein the mass consumption of the dicumyl peroxide is 2 percent of the mass of the carbon-nine petroleum resin.
The preparation method comprises the following steps: uniformly mixing the epoxy resin, the modified carbon-nine petroleum resin, the silicon micropowder, the calcium silicate, the ammonium polyphosphate, the benzoin, the curing agent, the accelerator and the flatting agent in parts by weight, extruding the mixture by a double-screw extruder, tabletting and crushing the mixture, and crushing the crushed mixture by a pulverizer to obtain the insulating powder coating.
Comparative example 1 differs from example 1 in that although modified carbon nine petroleum resin was added to the powder coating for insulation; however, the modified carbon-nine petroleum resin was prepared by a different method, and comparative example 1 was modified with only fumaric acid in step (1) of example 1, and was not subjected to the stearyl alcohol modification step in step (2) of example 1. The method is used for comparing the differences of different modification methods of the modified carbon-nine petroleum resin.
Comparative example 2 preparation of insulating powder coating
The raw materials comprise: e-12(604) 70 parts of epoxy resin; 30 parts of modified carbon nine petroleum resin; 25 parts of silicon micropowder; 8 parts of calcium silicate; 4 parts of ammonium polyphosphate; 2 parts of benzoin; 30 parts of PSG-01 type phenolic curing agent; 3 parts of a dimethyl imidazole accelerator; 3 parts of GLP588 type leveling agent;
the modified carbon-nine petroleum resin is fumaric acid-sorbitol modified carbon-nine petroleum resin; the fumaric acid-sorbitol modified carbon-nine petroleum resin is prepared by the following method:
(1) mixing carbon-nine petroleum resin (Heng He HHP-1204) and fumaric acid according to a mass ratio of 8:1, and reacting in a reaction kettle at 200 ℃ for 2.5 hours by using dicumyl peroxide as a catalyst to obtain fumaric acid modified carbon-nine petroleum resin;
(2) mixing fumaric acid modified carbon-nine petroleum resin and sorbitol according to a weight ratio of 4:1, and reacting for 4 hours in a reaction kettle at 240 ℃ by using zinc sulfate as a catalyst to obtain fumaric acid-sorbitol modified carbon-nine petroleum resin;
in the step (1), the mass amount of dicumyl peroxide is 2% of the mass of the carbon-nine petroleum resin; the mass usage amount of the zinc sulfate in the step (2) is 4% of the mass of the fumaric acid modified carbon-nine petroleum resin.
The preparation method comprises the following steps: uniformly mixing the epoxy resin, the modified carbon-nine petroleum resin, the silicon micropowder, the calcium silicate, the ammonium polyphosphate, the benzoin, the curing agent, the accelerator and the flatting agent in parts by weight, extruding the mixture by a double-screw extruder, tabletting and crushing the mixture, and crushing the crushed mixture by a pulverizer to obtain the insulating powder coating.
Comparative example 2 differs from example 1 in that although modified carbon nine petroleum resin was added to the powder coating for insulation; however, the modified carbonona petroleum resin was prepared by a different method, the alcohol modification step in step (2) of comparative example 2 was different, sorbitol modification was performed in step (2) of comparative example 2, and stearyl alcohol modification was performed in example 1. The method is used for comparing the differences of different modification methods of the modified carbon-nine petroleum resin.
Experimental examples insulation and anticorrosion experiments
The insulating powder coatings prepared in examples 1 to 4 and comparative examples 1 to 2 were sprayed onto a 0.8mm thick cold-rolled steel sheet after surface treatment by a corona spray gun to a thickness of 70 μm; testing the conductive condition of the coating by using a coating conductive tester; testing the neutral salt spray resistant time according to GB/T1771-2007 standard conditions; soaking with 20% sulfuric acid at 25 deg.C for 60d, observing whether the coating has cracks, bubbles, peeling, etc., and detecting its acid corrosion resistance; soaking with 20% sodium hydroxide at 25 deg.C for 60d, observing whether the coating has cracks, bubbles, peeling off, etc., and detecting its alkali corrosion resistance; the specific experimental results are shown in table 1.
TABLE 1 insulation and Corrosion protection test results
The experimental results in table 1 show that the insulating powder coatings prepared in the embodiments 1 to 4 of the present invention are all nonconductive, which indicates that the powder coatings of the present invention have good insulating properties. However, it can be seen from the test results of the insulating powder coatings of examples 1 to 4, such as neutral salt spray resistance, acid corrosion resistance, and alkali corrosion resistance: the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin prepared in the embodiments 1-3 is not added in the insulating powder coating, and the insulating powder coating does not have good neutral salt spray resistance, acid corrosion resistance and alkali corrosion resistance; the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin prepared by the method is added into the insulating powder coating of the embodiment 4, so that the neutral salt spray resistance, the acid corrosion resistance and the alkali corrosion resistance of the insulating powder coating are greatly improved.
The experiment of comparative example 1 shows that although fumaric acid modified carbon-nine petroleum resin is added into the insulating powder coating, the neutral salt spray resistance, acid corrosion resistance and alkali corrosion resistance of the insulating powder coating are not improved; this indicates that modification with fumaric acid alone, and no further modification with stearyl alcohol, of the nona carbo-petroleum resin, did not improve the neutral salt spray, acid corrosion, and base corrosion resistance of the powder coating.
From the experiment of comparative example 2, it can be seen that the fumaric acid-sorbitol modified carbon-nine petroleum resin is added into the formula, but the neutral salt spray resistance, the acid corrosion resistance and the alkali corrosion resistance of the powder coating are not obviously improved. The modification method of the carbon-nine petroleum resin has important influence on the neutral salt spray resistance, acid corrosion resistance and alkali corrosion resistance of the insulating powder coating, and the neutral salt spray resistance, the acid corrosion resistance and the alkali corrosion resistance of the insulating powder coating can be greatly improved only by adding the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin prepared by the method.
Claims (10)
1. The insulating powder coating is characterized by comprising the following raw material components in parts by weight:
60-80 parts of epoxy resin; 20-30 parts of silicon micropowder; 5-10 parts of calcium silicate; 3-5 parts of ammonium polyphosphate; 1-3 parts of benzoin; 20-40 parts of a curing agent; 1-5 parts of an accelerator; 1-5 parts of a leveling agent.
2. The insulating powder coating of claim 1, comprising the following raw material components in parts by weight:
70-80 parts of epoxy resin; 25-30 parts of silicon micropowder; 8-10 parts of calcium silicate; 4-5 parts of ammonium polyphosphate; 2-3 parts of benzoin; 30-40 parts of a curing agent; 3-5 parts of an accelerator; 3-5 parts of a leveling agent.
3. The insulating powder coating of claim 2, comprising the following raw material components in parts by weight:
70 parts of epoxy resin; 25 parts of silicon micropowder; 8 parts of calcium silicate; 4 parts of ammonium polyphosphate; 2 parts of benzoin; 30 parts of a curing agent; 3 parts of an accelerant; and 3 parts of a leveling agent.
4. The insulating powder coating according to claim 1, wherein said epoxy resin is E-12(604) epoxy resin.
5. The insulating powder coating according to claim 1, wherein the curing agent is a phenolic curing agent of the type PSG-01.
6. The insulating powder coating according to claim 1, wherein said accelerator is dimethylimidazole.
7. The insulating powder coating of claim 1, wherein the leveling agent is a GLP588 type leveling agent.
8. The insulating powder coating according to claim 1, further comprising 20 to 40 parts of a modified carbon-nine petroleum resin;
the modified carbon-nine petroleum resin is fumaric acid-stearyl alcohol modified carbon-nine petroleum resin; the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin is prepared by the following method:
(1) mixing the carbon-nine petroleum resin and fumaric acid according to a mass ratio of 5-10: 1, taking dicumyl peroxide as a catalyst, and reacting in a reaction kettle at 190-210 ℃ for 2-3 h to obtain fumaric acid modified carbon-nine petroleum resin;
(2) mixing fumaric acid modified carbon-nine petroleum resin and stearyl alcohol according to a weight ratio of 3-5: 1, and reacting in a reaction kettle at 230-250 ℃ for 3-5 hours by using zinc sulfate as a catalyst to obtain the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin.
9. The insulating powder coating of claim 8, wherein the fumaric acid-stearyl alcohol modified nonapetroleum resin is prepared by:
(1) mixing the carbon-nine petroleum resin and fumaric acid according to a mass ratio of 8:1, and reacting for 2.5 hours in a reaction kettle at 200 ℃ by using dicumyl peroxide as a catalyst to obtain fumaric acid modified carbon-nine petroleum resin;
(2) mixing fumaric acid modified carbon-nine petroleum resin and stearyl alcohol according to a weight ratio of 4:1, and reacting for 4h in a reaction kettle at 240 ℃ by using zinc sulfate as a catalyst to obtain the fumaric acid-stearyl alcohol modified carbon-nine petroleum resin.
10. The insulating powder coating of claim 9, wherein the dicumyl peroxide used in step (1) is 1-3% by mass of the carbon-nine petroleum resin; the mass usage amount of the zinc sulfate in the step (2) is 3-5% of the mass of the fumaric acid modified carbon-nine petroleum resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910989713.8A CN110698950B (en) | 2019-10-17 | 2019-10-17 | Insulating powder coating |
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| CN101457117A (en) * | 2008-12-26 | 2009-06-17 | 广州擎天实业有限公司 | Special insulating powder coating for electro-magnetism line and preparation method thereof |
| CN107840930A (en) * | 2017-11-08 | 2018-03-27 | 宁波能之光新材料科技股份有限公司 | A kind of functionalization Petropols and preparation method thereof |
| CN109321015A (en) * | 2018-09-30 | 2019-02-12 | 清远道顿新材料有限公司 | A kind of power transmission and distribution busbar special isolation powdery paints and preparation method thereof |
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| CN101457117A (en) * | 2008-12-26 | 2009-06-17 | 广州擎天实业有限公司 | Special insulating powder coating for electro-magnetism line and preparation method thereof |
| CN107840930A (en) * | 2017-11-08 | 2018-03-27 | 宁波能之光新材料科技股份有限公司 | A kind of functionalization Petropols and preparation method thereof |
| CN109321015A (en) * | 2018-09-30 | 2019-02-12 | 清远道顿新材料有限公司 | A kind of power transmission and distribution busbar special isolation powdery paints and preparation method thereof |
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Denomination of invention: An insulating powder coating Granted publication date: 20210827 Pledgee: Bank of China Limited by Share Ltd. Jiangmen branch Pledgor: JIANGMEN HUANGZHOU INDUSTRIAL CO.,LTD. Registration number: Y2024980013093 |