CN108059894A - A kind of electrical sheet environmental protection coatings and preparation method thereof - Google Patents
A kind of electrical sheet environmental protection coatings and preparation method thereof Download PDFInfo
- Publication number
- CN108059894A CN108059894A CN201810061707.1A CN201810061707A CN108059894A CN 108059894 A CN108059894 A CN 108059894A CN 201810061707 A CN201810061707 A CN 201810061707A CN 108059894 A CN108059894 A CN 108059894A
- Authority
- CN
- China
- Prior art keywords
- parts
- environmental protection
- electrical sheet
- acrylic resin
- protection coatings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- 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
-
- 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
- C08K2003/327—Aluminium phosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of electrical sheet environmental protection coatings and preparation method thereof, are related to electrical insulating material technical field, which includes following raw material：Acrylic resin modified, polyester-imide, ethylene methacrylic silicon rubber, polystyrene, aluminum phosphate, sodium tetraborate, silica, zinc molybdate, sodium bentonite, mica powder, daiamid epoxy curing agent, levelling agent, thickener, fire retardant and antifoaming agent.Its preparation method is by made from the stirring and evenly mixing and grind of raw material.The electrical sheet environmental protection coatings of the present invention are environmentally protective, low production cost, have excellent insulating properties, adhesion, punching, weldability and corrosion resistance, using effect is good, long lifespan, is widely used.
Description
Technical field
The present invention relates to electrical insulating material technical fields, and in particular to a kind of electrical sheet environmental protection coatings and its preparation
Method.
Background technology
Electrical sheet is a kind of important magnetic material, and non-oriented electrical steel is widely used in genemotor, power generation
The iron core of the motors such as machine, miniature transformer.When manufacturing iron core, it is necessary to continuously by electric steel plate punching into the base of core configuration
Material is fixed a certain number of chip edges folded by welding.In order to reduce eddy current loss, need to be coated in surface of steel plate exhausted
Edge coating, it is insulated from each other between each synusia to make.
Coating is last procedure of electrical sheet production, and species, technique and the quality of coating will be to phases between electrical sheet
Mutual insulating properties, adhesion, punching, weldability and corrosion resistance etc. generate significant impact, so as to further influence electrical sheet in itself
Iron loss is horizontal or even the performance of product and now nontoxic, the harmless environment-friendly type coating of exploitation have become current electrical sheet
The key subjects of coating development.
The content of the invention
For problems of the prior art, the present invention provides a kind of electrical sheet environmental protection coatings and its preparation sides
Method, this kind of coating is environmentally protective, low production cost, has excellent insulating properties, adhesion, punching, weldability and anti-corrosion
Property, using effect is good, long lifespan, is widely used.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of electrical sheet environmental protection coatings, including following raw material by weight：Acrylic resin modified 30-40
Part, 5-15 parts of polyester-imide, 20-30 parts of ethylene methacrylic silicon rubber, 10-20 parts of polystyrene, 4-8 parts of aluminum phosphate, sodium tetraborate
3-7 parts, 2-4 parts of silica, 2-4 parts of zinc molybdate, 6-10 parts of sodium bentonite, 4-8 parts of mica powder, daiamid epoxy curing agent 1-
1-3 parts of 3 parts, 1-3 parts of levelling agent, 1-3 parts of thickener, 1-3 parts of fire retardant and antifoaming agent；
It is above-mentioned acrylic resin modified to be made by following ingredient by weight：25-35 parts of acrylic resin powder,
30-40 parts of 3-5 parts of ethanedioic acid polyester, 1-3 parts of nano magnesia and absolute ethyl alcohol；Its preparation method is first by acrylic resin powder
End is added to dissolving stirring 40-50min in absolute ethyl alcohol, adds nano magnesia and ethanedioic acid polyester, is ultrasonically treated 1-2h
Mixed solution is formed, is subsequently placed in drying and processing 35-45min in 85-95 DEG C of baking oven, it is pre- in the case where temperature is 105-115 DEG C afterwards
Cure 30-40min, be finally placed in hot press and cure 80-120min, solidification temperature is 135-145 DEG C, solidifying pressure 1.2-
1.4MPa cures and terminates to be made acrylic resin modified needed for raw material of the present invention.
Further, above-mentioned coating includes following raw material by weight：Acrylic resin modified 35 parts, polyester-imide
10 parts, 25 parts of ethylene methacrylic silicon rubber, 15 parts of polystyrene, 6 parts of aluminum phosphate, 5 parts of sodium tetraborate, 3 parts of silica, zinc molybdate 3
Part, 8 parts of sodium bentonite, 6 parts of mica powder, 2 parts of daiamid epoxy curing agent, 2 parts of levelling agent, 2 parts of thickener, 2 parts of fire retardant
With 2 parts of antifoaming agent.
Further, it is above-mentioned acrylic resin modified to be made by following ingredient by weight：Acrylic resin powder
35 parts of 30 parts, 4 parts of ethanedioic acid polyester, 2 parts of nano magnesia and absolute ethyl alcohol；Its preparation method is first by acrylic resin powder
Dissolving stirring 45min in absolute ethyl alcohol is added to, adds nano magnesia and ethanedioic acid polyester, supersound process 1.5h forms mixed
Solution is closed, is subsequently placed in drying and processing 40min in 90 DEG C of baking ovens, afterwards precuring 35min, most postposition in the case where temperature is 110 DEG C
Cure 100min in hot press, solidification temperature is 140 DEG C, solidifying pressure 1.3MPa, cures and terminates to be that the obtained present invention is former
It is acrylic resin modified needed for material.
Preferably, above-mentioned levelling agent is using one kind in polyacrylic acid, carboxymethyl cellulose or dimethyl silicone polymer.
Preferably, above-mentioned thickener is using one kind in polyacrylamide, polyvinylpyrrolidone or polyethylene glycol oxide.
Preferably, above-mentioned fire retardant is using one kind in trihydroxy methyl phosphorous oxide, diphenyl phosphoester or ammonium polyphosphate.
Preferably, above-mentioned antifoaming agent is using one kind in dimethyl silicone polymer, benzyl carbinol oleate or polyoxypropylene.
The preparation method of above-mentioned electrical sheet environmental protection coatings, follows the steps below：
(1) first raw material is weighed by above-mentioned weight；
(2) all feedstock transportations are added in the deionized water stirring homogeneous of raw material gross weight 10-20% into a mixing bowl again
Processing, speed of agitator 300-500r/min, mixing time 1.5-2.5h；
(3) material after homogeneous finally is delivered to sand mill to mill, fineness≤15 μm of material after milling,
The electrical sheet environmental protection coatings of the present invention are made.
The present invention has following advantageous effect：The electrical sheet environmental protection coatings raw material sources of the present invention are extensive,
Of low cost, preparation method is simple, and required low energy consumption, and cost of labor is few, the discharge of production process no waste mine, waste liquid, exhaust gas, former
Expect that utilization rate is high, the element without harmful human body such as chromium, lead and environment；In addition, coating of the present invention is environmentally protective more than reaching
While standard, the punchings of finished product coatings, weldability and anti-corrosion sex expression are excellent, and insulating properties is compared in the past with adhesion
Similar product and the prior art be even more be obviously improved, specific manifestation is as follows：
(1) insulating properties：It is similar compared to previous in (74.35,78.10) between the coatings interlayer resistance area of the present invention
Product and the prior art improve about 42%-56%；
(2) adhesion：According to GB/T2522-2007 electrical sheets (band) surface insulation resistance, coating adhesion test mark
Standard, adhesion grade can reach A grades or more；Adhesion grade after SRA can reach B grades or more.
Specific embodiment
The specific embodiment of the present invention is further described with reference to embodiment, following embodiment is only used for more
Technical scheme is clearly demonstrated, and is not intended to limit the protection scope of the present invention and limits the scope of the invention.
In the present invention it is raw materials used choose it is as shown in table 1 below：
Table 1
Embodiment 1
A kind of electrical sheet environmental protection coatings, weigh the raw material such as the following table 2：
Table 2
It is above-mentioned acrylic resin modified to be made by following component：Acrylic resin powder 25kg, ethanedioic acid polyester 3kg,
Nano magnesia 1kg and absolute ethyl alcohol 30kg；Its preparation method be first acrylic resin powder is added to it is molten in absolute ethyl alcohol
Solution stirring 40min, adds nano magnesia and ethanedioic acid polyester, is ultrasonically treated 1h and forms mixed solution, is subsequently placed in 85 DEG C
Drying and processing 35min in baking oven, the precuring 30min in the case where temperature is 105 DEG C, is finally placed in hot press and cures 80min afterwards,
Solidification temperature is 135 DEG C, solidifying pressure 1.2MPa, cures and terminates that modified acroleic acid tree needed for raw material of the present invention is made
Fat.
The preparation method of above-mentioned electrical sheet environmental protection coatings, follows the steps below：
(1) above-mentioned all feedstock transportations are added in into a mixing bowl at the deionized water stirring homogeneous of raw material gross weight 10%
Reason, speed of agitator 300r/min, mixing time 1.5h；
(2) material after homogeneous is delivered in sand mill again and is milled into fineness as 15 μm, that is, the electrician of the present invention is made
Steel loop protects coatings.
Embodiment 2
A kind of electrical sheet environmental protection coatings, weigh the raw material such as the following table 3：
Table 3
It is above-mentioned acrylic resin modified to be made by following component：Acrylic resin powder 30kg, ethanedioic acid polyester 4kg,
Nano magnesia 2kg and absolute ethyl alcohol 35kg；Its preparation method be first acrylic resin powder is added to it is molten in absolute ethyl alcohol
Solution stirring 45min, adds nano magnesia and ethanedioic acid polyester, is ultrasonically treated 1.5h and forms mixed solution, is subsequently placed in 90
Drying and processing 40min in DEG C baking oven, the precuring 35min in the case where temperature is 110 DEG C, is finally placed in hot press and cures afterwards
100min, solidification temperature are 140 DEG C, solidifying pressure 1.3MPa, cure and terminate to be made modified needed for raw material of the present invention
Acrylic resin.
The preparation method of above-mentioned electrical sheet environmental protection coatings, follows the steps below：
(1) deionized water that above-mentioned all feedstock transportations are first added in raw material gross weight 15% into a mixing bowl stirs homogeneous
Processing, speed of agitator 400r/min, mixing time 2h；
(2) finally the material after homogeneous is delivered in sand mill and is milled into fineness as 10 μm, that is, the electricity of the present invention is made
Work steel loop protects coatings.
Embodiment 3
A kind of electrical sheet environmental protection coatings, weigh the raw material such as the following table 4：
Table 4
It is above-mentioned acrylic resin modified to be made by following component：Acrylic resin powder 35kg, ethanedioic acid polyester 5kg,
Nano magnesia 3kg and absolute ethyl alcohol 40kg；Its preparation method be first acrylic resin powder is added to it is molten in absolute ethyl alcohol
Solution stirring 50min, adds nano magnesia and ethanedioic acid polyester, is ultrasonically treated 2h and forms mixed solution, is subsequently placed in 95 DEG C
Drying and processing 45min in baking oven, the precuring 40min in the case where temperature is 115 DEG C, is finally placed in hot press and cures afterwards
120min, solidification temperature are 145 DEG C, solidifying pressure 1.4MPa, cure and terminate to be made modified needed for raw material of the present invention
Acrylic resin.
The preparation method of above-mentioned electrical sheet environmental protection coatings, follows the steps below：
(1) deionized water that above-mentioned all feedstock transportations are first added in raw material gross weight 20% into a mixing bowl stirs homogeneous
Processing, speed of agitator 500r/min, mixing time 2.5h；
(2) finally the material after homogeneous is delivered in sand mill and is milled into fineness as 15 μm, that is, the electricity of the present invention is made
Work steel loop protects coatings.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, although with reference to foregoing reality
Example is applied the present invention is described in detail, it for those skilled in the art, still can be to foregoing each implementation
Technical solution recorded in example modifies or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (8)
1. a kind of electrical sheet environmental protection coatings, which is characterized in that including following raw material by weight：Modified acroleic acid tree
30-40 parts of fat, 5-15 parts of polyester-imide, 20-30 parts of ethylene methacrylic silicon rubber, 10-20 parts of polystyrene, 4-8 parts of aluminum phosphate, four
3-7 parts of Boratex, 2-4 parts of silica, 2-4 parts of zinc molybdate, 6-10 parts of sodium bentonite, 4-8 parts of mica powder, daiamid epoxy are solid
1-3 parts of 1-3 parts of agent, 1-3 parts of levelling agent, 1-3 parts of thickener, 1-3 parts of fire retardant and antifoaming agent；
It is described acrylic resin modified to be made by following ingredient by weight：25-35 parts of acrylic resin powder, ethanedioic acid
30-40 parts of 3-5 parts of polyester, 1-3 parts of nano magnesia and absolute ethyl alcohol；Its preparation method is first to add in acrylic resin powder
The dissolving stirring 40-50min into absolute ethyl alcohol, adds nano magnesia and ethanedioic acid polyester, and supersound process 1-2h forms mixed
Solution is closed, is subsequently placed in drying and processing 35-45min in 85-95 DEG C of baking oven, afterwards the precuring 30- in the case where temperature is 105-115 DEG C
40min is finally placed in hot press and cures 80-120min, and solidification temperature is 135-145 DEG C, solidifying pressure 1.2-1.4MPa,
Curing terminates to obtain the final product.
2. a kind of electrical sheet environmental protection coatings according to claim 1, which is characterized in that including it is following by weight
Raw material：Acrylic resin modified 35 parts, 10 parts of polyester-imide, 25 parts of ethylene methacrylic silicon rubber, 15 parts of polystyrene, aluminum phosphate
6 parts, 5 parts of sodium tetraborate, 3 parts of silica, 3 parts of zinc molybdate, 8 parts of sodium bentonite, 6 parts of mica powder, daiamid epoxy curing agent 2
Part, 2 parts of levelling agent, 2 parts of thickener, 2 parts of fire retardant and 2 parts of antifoaming agent.
3. a kind of electrical sheet environmental protection coatings according to claim 1, which is characterized in that described acrylic resin modified
It is made by following ingredient by weight：30 parts of acrylic resin powder, 4 parts of ethanedioic acid polyester, 2 parts of nano magnesia and nothing
35 parts of water-ethanol；Its preparation method is that acrylic resin powder first is added to dissolving stirring 45min in absolute ethyl alcohol, is added
Nano magnesia and ethanedioic acid polyester are ultrasonically treated 1.5h and form mixed solution, be subsequently placed in drying and processing in 90 DEG C of baking ovens
40min, the precuring 35min in the case where temperature is 110 DEG C, is finally placed in hot press and cures 100min afterwards, solidification temperature 140
DEG C, solidifying pressure 1.3MPa, curing terminates to obtain the final product.
4. a kind of electrical sheet environmental protection coatings according to claim 1, which is characterized in that the levelling agent is polypropylene
One kind in acid, carboxymethyl cellulose or dimethyl silicone polymer.
5. a kind of electrical sheet environmental protection coatings according to claim 1, which is characterized in that the thickener is polypropylene
One kind in amide, polyvinylpyrrolidone or polyethylene glycol oxide.
6. a kind of electrical sheet environmental protection coatings according to claim 1, which is characterized in that the fire retardant is three hydroxyl first
One kind in base phosphorous oxide, diphenyl phosphoester or ammonium polyphosphate.
7. a kind of electrical sheet environmental protection coatings according to claim 1, which is characterized in that the antifoaming agent is poly- diformazan
One kind in radical siloxane, benzyl carbinol oleate or polyoxypropylene.
8. a kind of preparation method of electrical sheet environmental protection coatings as described in claim 1-7 any one, which is characterized in that
Comprise the following steps：
(1) raw material is weighed by the weight；
(2) all feedstock transportations into a mixing bowl are added in the deionized water stirring homogenization of raw material gross weight 10-20%, are stirred
Mix rotating speed is 300-500r/min, mixing time 1.5-2.5h；
(2) material after homogeneous is delivered to sand mill to mill, fineness≤15 μm of material after milling, you can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061707.1A CN108059894A (en) | 2018-01-23 | 2018-01-23 | A kind of electrical sheet environmental protection coatings and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061707.1A CN108059894A (en) | 2018-01-23 | 2018-01-23 | A kind of electrical sheet environmental protection coatings and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108059894A true CN108059894A (en) | 2018-05-22 |
Family
ID=62141887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810061707.1A Withdrawn CN108059894A (en) | 2018-01-23 | 2018-01-23 | A kind of electrical sheet environmental protection coatings and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108059894A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255299A (en) * | 2007-12-28 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Environment protection heat-proof acrylic resin insulation paint |
| CN101255298A (en) * | 2007-12-28 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Non-oriented electrical steel chromium-free insulation paint |
| CN101358096A (en) * | 2008-09-05 | 2009-02-04 | 首钢总公司 | Insulation environment friendly paint for non-oriented electrical steel |
-
2018
- 2018-01-23 CN CN201810061707.1A patent/CN108059894A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255299A (en) * | 2007-12-28 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Environment protection heat-proof acrylic resin insulation paint |
| CN101255298A (en) * | 2007-12-28 | 2008-09-03 | 马鞍山钢铁股份有限公司 | Non-oriented electrical steel chromium-free insulation paint |
| CN101358096A (en) * | 2008-09-05 | 2009-02-04 | 首钢总公司 | Insulation environment friendly paint for non-oriented electrical steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106832183B (en) | Graphene modified cathode polyurethane electrophoretic resin and electrophoretic paint composition thereof | |
| CN105925181B (en) | A kind of wear-resisting grease proofing coatings | |
| CN105062080A (en) | Arc-resistant silicon composite material, preparation method and use thereof | |
| CN107312445A (en) | A kind of environmentally friendly silicon steel insulating coating | |
| CN102993911A (en) | Production method of epoxy resin insulating varnish | |
| CN105006285A (en) | High-temperature-resistant ceramic electromagnetic wire | |
| CN102079939B (en) | Water-based environment-friendly insulating paint and preparation method thereof | |
| CN103694860A (en) | Acetal wire enamel meeting thermal level of 155 DEG C and more for transformer and preparation method of acetal wire enamel | |
| CN101805129B (en) | Insulating layer material for stainless steel plates and preparation method thereof | |
| CN108059894A (en) | A kind of electrical sheet environmental protection coatings and preparation method thereof | |
| CN105907306A (en) | Anti-static insulating paint | |
| CN105131828A (en) | Insulation impregnating varnish for nuclear power unit and preparation method of varnish | |
| CN104327667B (en) | A kind of preparation method for dry and wet transformator solvent-free Self-leveling iron core coating varnish | |
| CN105907273A (en) | Method for preparing anti-static insulating paint | |
| CN107118663A (en) | A kind of far infrared heating slurry and preparation method thereof | |
| CN104448705B (en) | Preparation method of nanomaterial modified DMD soft composite | |
| CN105925135A (en) | Heat dissipation powder coating for engine surface layer and preparation method of heat dissipation powder coating | |
| CN105295302A (en) | High-temperature-resistant and ageing-resistant cable insulation layer | |
| CN108988238A (en) | A kind of high-cooling property air-type bus duct and preparation method thereof | |
| CN107227060A (en) | It is a kind of for insulated paint of electronic component and preparation method thereof | |
| CN104152042A (en) | Surface insulation paint | |
| CN106320060A (en) | High-strength mica paper and method for preparing same | |
| CN104356861B (en) | The method of overlay film in composition and radome for covering dielectric film in radome | |
| CN107010928B (en) | MoSi2/Al2O3High-temperature-resistant wave-absorbing material, preparation method and application thereof | |
| CN106320097A (en) | High-strength composite mica paper and method for preparing same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180522 |