CN106811058A - Coatings and its preparation method and application - Google Patents
Coatings and its preparation method and application Download PDFInfo
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- CN106811058A CN106811058A CN201710001025.7A CN201710001025A CN106811058A CN 106811058 A CN106811058 A CN 106811058A CN 201710001025 A CN201710001025 A CN 201710001025A CN 106811058 A CN106811058 A CN 106811058A
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- coatings
- organotin
- saturated polyester
- diluent
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- 238000000576 coating method Methods 0.000 title claims abstract description 117
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 47
- 229920000728 polyester Polymers 0.000 claims abstract description 45
- 239000002002 slurry Substances 0.000 claims abstract description 40
- 239000003085 diluting agent Substances 0.000 claims abstract description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 238000009413 insulation Methods 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910002012 Aerosil® Inorganic materials 0.000 claims abstract description 27
- 239000006229 carbon black Substances 0.000 claims description 39
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 19
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 18
- 229940043265 methyl isobutyl ketone Drugs 0.000 claims description 18
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 16
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 14
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 12
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 229920001228 polyisocyanate Polymers 0.000 claims description 5
- 239000005056 polyisocyanate Substances 0.000 claims description 5
- 229910021485 fumed silica Inorganic materials 0.000 claims description 2
- 239000012774 insulation material Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 26
- 208000036758 Postinfectious cerebellitis Diseases 0.000 description 24
- 238000005507 spraying Methods 0.000 description 14
- 239000003973 paint Substances 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 11
- 238000007711 solidification Methods 0.000 description 10
- 230000008023 solidification Effects 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 239000012752 auxiliary agent Substances 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 238000007639 printing Methods 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 6
- 230000008602 contraction Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- IUHFWCGCSVTMPG-UHFFFAOYSA-N [C].[C] Chemical class [C].[C] IUHFWCGCSVTMPG-UHFFFAOYSA-N 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 239000002318 adhesion promoter Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000010998 test method 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
- C09D17/005—Carbon black
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of coatings, including following components：40~70 parts of saturated polyester, 12~25 parts of black slurry, 0.1~1 part of organotin top layer drier, 0.1~1 part of organotin deep layer drier, 0.1~1 part of levelling agent, 2~7 parts of aerosil, 5~20 parts of diluent, 1~8 part of metal adhesion accelerator, the above is calculated in parts by weight, the coatings insulation effect and covering effect are good, and coating is thin.The preparation method of the coatings is additionally provided, after saturated polyester, black slurry, organotin top layer drier, organotin deep layer drier, levelling agent, metal adhesion accelerator, diluent are mixed, aerosil is added, coatings are obtained；The raw material of the preparation method is common to be easy to get, simple to operate.Application of the coatings on electronic product is additionally provided, first adds PIC to mix using preceding, the application saves manpower and time, cost-effective.
Description
Technical field
The present invention relates to paint field, especially, be related to a kind of coatings, further relate to coatings preparation method and
Using.
Background technology
Have many coatings on the market now, the coating of these coatings is thicker during coating, can be only achieved compared with
Good insulation effect, therefore most of coatings all can be only applied in the large-scale devices such as motor, and the electronic product of precision
There is very big limitation for the thickness of coatings, applicable coatings seldom, such as apply the coatings on mobile phone non-
Often few, such as the insulation processing of current Mobile phone shielding case does not develop suitable coating also.Mobile phone shielding case be by component,
The interference source of circuit, sub-assembly, cable or whole system is surrounded so as to prevent a kind of important unit of the electromagnetic field to external diffusion
Part.Radome can all be carried out insulation processing by general mobile phone, and traditional way is manually to paste the insulating paper of black import, the party
Method high cost, workload is big, takes time and effort.Therefore, a kind of new coatings are studied, the electricity of similar mobile phone can be applied to
It is problem demanding prompt solution on sub- product.
The content of the invention
The invention provides a kind of coatings and its preparation method and application, to solve the painting thickness of coatings, hide
Lid effect is bad and electronic product does not have suitable coatings or caused using insulating methods such as insulating papers high cost,
The technical problem that workload is big, take time and effort.
The technical solution adopted by the present invention is as follows：
A kind of coatings, including following components：40~70 parts of saturated polyester, 12~25 parts of black slurry, organotin top layer
0.1~1 part of drier, 0.1~1 part of organotin deep layer drier, 0.1~1 part of levelling agent, 2~7 parts of aerosil is dilute
Release 5~20 parts of agent, 1~8 part of metal adhesion accelerator, the above is calculated in parts by weight.
Further, including following components：60 parts of saturated polyester, 20 parts of black slurry, 0.4 part of organotin top layer drier,
0.2 part of organotin deep layer drier, 0.2 part of levelling agent, 4 parts of aerosil, 12.2 parts of diluent, metal adhesion promotes
3 parts of agent, the above is calculated in parts by weight.
Further, black slurry includes following components：30~60 parts of saturated polyester, 5~12 parts of carbon black disperser, carbon black 10
~20 parts, 20~40 parts of diluent, the above is calculated in parts by weight.
Further, black slurry includes following components：47 parts of saturated polyester, 9 parts of carbon black disperser, 14 parts of carbon black, dilution
32 parts of agent, the above is calculated in parts by weight.
Further, saturated polyester is linear saturated polyester of the molecular weight more than 10000；And/or, diluent is two acetone
One or more in alcohol, methyl iso-butyl ketone (MIBK), propylene glycol methyl ether acetate, butyl acetate, ethyl acetate.
Further, carbon black is insulation carbon black, and specific surface area is 120m2/ g~350m2/g
According to another aspect of the present invention, the preparation method of above-mentioned coatings is additionally provided, is comprised the following steps：
(1) it is saturated polyester, black slurry, organotin top layer drier, organotin deep layer drier, levelling agent, metal is attached
Stirred after adhesion promoter, diluent mixing, obtain mixture A；
(2) stirring in the mixture A that step (1) is obtained is incorporated fumed silica into, coatings are obtained.
Further, in step (1), the condition of stirring is：Whipping temp is 20 DEG C~40 DEG C, and mixing speed is 400r/
Min~600r/min, mixing time is 10min~15min；In step (2), the condition of stirring is：Whipping temp is constant, stirring
Speed is 2000r/min~2500r/min, and mixing time is 20min~30min.
Further, the preparation of black slurry is comprised the following steps：
(a) by saturated polyester, carbon black disperser, diluent mix, temperature be 20 DEG C~40 DEG C, mixing speed be
10min~15min is stirred under 400r/min~600r/min, mixture B is obtained；
B be added to carbon black in mixture B obtained in step (a) by (), stir 10min~15min, and mixing speed is
800r/min~1200r/min, obtains black slurry.
According to another aspect of the present invention, application of the above-mentioned coatings on electronic product is additionally provided, using including
Used after coatings are mixed with PIC or modified polyisocyanate.
Further, before coatings are applied on electronic product, 7~15 parts of PICs or modified poly- are first added
Isocyanates, stirs, the condition of stirring after mixing：Mixing speed be 100r/min~300r/min, mixing time be 5min~
6min；Sprayed after being sufficiently mixed or be printed on the base material of electronic product, product is obtained after 0 DEG C~85 DEG C baking-curings.
In coatings of the invention, saturated polyester is the linear saturated polyester of HMW, and molecular weight is more than 10000,
There is superpower adhesive force to common plastics and metal；Due to not containing undersaturated carbon-carbon double bond in molecular backbone, will not
II-II conjugated structures are formed, without conductive structure；And molecular weight is high, volume contraction is small after film forming, it is to avoid inside configuration is collapsed
Collapse and cause defect, can further increase insulating properties.
The carbon black that the present invention is used is blackness high insulation carbon black, and specific surface area is 120m2/ g~350m2/ g, blackness is high, screening
Gai Liqiang, heat resistance are good, good insulating.
Aerosil of the invention plays effective photoextinction in film, can apply spraying or printing insulation
Sample after material reaches preferable outward appearance and feel.
Auxiliary agent of the invention includes that organotin top layer drier, organotin deep layer drier, levelling agent, metal adhesion promote
Enter agent, performance and outward appearance for adjusting paint film.
Diluent of the invention is added according to the above ratio, it is to avoid coatings are excessively dilute or feeding-up, contributes to paint film levelling.
Coatings of the invention can be with PIC or the reaction solidification of modified polyisocyanate curing agent, baking temperature
0 DEG C~85 DEG C of degree is curable.
After the toasted solidification of coatings of the invention, the linear saturated polyester of HMW and PIC or modified
There is addition reaction and form network cross-linked structure in PIC, blackness carbon black high and aerosil can closely be embedded in painting
In layer, therefore high covering power, the insulation coating of scumbling (9 μm~10 μm) can be obtained.
The invention has the advantages that：
1st, coatings insulation effect of the invention and covering effect is good, it is necessary to the thickness of thin of coating, can apply to each
Plant common plastic material (such as PC, PMMA, ABS), the insulation processing on metal (stainless steel, magnesium alloy, aluminium alloy) surface；This
The thickness of thin of the coatings coating of invention, thus suitable for accurate electronic product, electronic product is reused viscous
The insulating methods such as patch insulating paper, cost reduction, reduce workload, save manpower and time.
2nd, the preparation method of coatings of the invention, raw material is common to be easy to get, simple to operate, it is easy to accomplish.
3rd, application process of the coatings of the invention on electronic product radome is simple, and spraying or printing can be real
It is existing, it is not necessary to manually to paste insulating paper, save manpower and time, it is cost-effective.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
The present invention is further detailed explanation below.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.The present invention is described in detail below in conjunction with embodiment.
In following examples, HMW saturated polyester resin creates Degussa, model Dynapol L411 purchased from winning；
Carbon black dispersant with high efficiency, purchased from B Bi Ke chemistry, model BYK163；Blackness insulation carbon black high, Degussa, model are created purchased from winning
It is the goth black Special Black 4A of carbon black；PIC, can be common all kinds of PICs, can be but not office
It is limited to the model N-75, L-75, N3390 of Bayer；Special auxiliary agent include organotin top layer drier, organotin deep layer drier,
The various auxiliary agents that levelling agent, metal adhesion accelerator are known to the skilled person, can buy from Japanese Supreme Being Si Balong,
One or more in the auxiliary agent series of products such as Dow corning, German Bi Ke chemistry；Aerosil is the skill of this area
Powder known to art personnel, can buy AEROSIL R972, AEROSIL R202, the AEROSIL R816 from German Degussa
In one or more silica；Diluent is DAA, methyl iso-butyl ketone (MIBK), propylene glycol methyl ether acetate, acetic acid fourth
One or more in ester, ethyl acetate, it is analysis pure commercially available.
Embodiment 1
Present embodiments provide a kind of coatings, with reference to shown in table 1, including following components, 70 parts of saturated polyester is black
15 parts of mill base, 1 part of organotin top layer drier, 1 part of organotin deep layer drier, 1 part of levelling agent, 7 parts of aerosil is dilute
20 parts of agent is released, diluent includes 1 part of DAA, 1 part of methyl iso-butyl ketone (MIBK), 4 parts of propylene glycol methyl ether acetate, butyl acetate 12
Part, 2 parts of ethyl acetate；8 parts of metal adhesion accelerator, the above is calculated in parts by weight.
In the coatings of the present embodiment, saturated polyester is the linear saturated polyester of HMW, and molecular weight is more than
10000, there is superpower adhesive force to common plastics and metal；It is double due to not containing undersaturated carbon carbon in molecular backbone
Key, will not form II-II conjugated structures, without conductive structure；And molecular weight is high, volume contraction is small after film forming, it is to avoid knot
Caved in inside structure and cause defect, can further increase insulating properties.
The carbon black that the present embodiment is used is blackness high insulation carbon black, and specific surface area is 120m2/ g~350m2/ g, blackness is high,
Strong covering power, heat resistance are good, good insulating.
The aerosil of the present embodiment plays effective photoextinction in film, can make spraying or printing insulation
Sample after coating reaches preferable outward appearance and feel.
The auxiliary agent of the present embodiment includes organotin top layer drier, organotin deep layer drier, levelling agent, metal adhesion
Accelerator, performance and outward appearance for adjusting paint film.
The diluent of the present embodiment is added according to the above ratio, it is to avoid coatings are excessively dilute or feeding-up, contributes to paint film levelling.
The coatings of the present embodiment carry out covering power test, test result display covering power OK with covering power paper.
The coatings of the present embodiment can react with PIC and solidify, in other embodiments can also with it is modified
PIC reaction solidification, solidifies at 80 DEG C of baking temperature, and baking temperature can be consolidated for 0 DEG C~85 DEG C in other embodiments
Change.
Table 1：The formula (weight portion) of coatings in embodiment 1~5
In the present embodiment, made 3 kinds of samples of black slurry, respectively sample 1, sample 2 and sample 3,3 kinds of samples it is black
Into being grouped into reference to table 2, diluent used is propylene glycol methyl ether acetate and butyl acetate to mill base, and carbon black is through at peroxidating
The super-normal structure black of reason.The preparation method of black slurry is as follows, and 3 kinds of samples are prepared respectively.
A () mixes saturated polyester, carbon black disperser, diluent according to the ratio in table 2 respectively, in above-mentioned 3 kinds of samples,
Diluent used be propylene glycol methyl ether acetate and butyl acetate, temperature be 30 DEG C, mixing speed be 500r/min under stir
12min is mixed, mixture B is obtained；
B be added to the carbon black of ratio in table 2 in mixture B obtained in step (a) by (), stir 12min, and mixing speed is
1000r/min；Then high speed vibrating machine continuous shaking 48h is used, disperses carbon black substantially uniformity, obtain black slurry.
Table 2：The formula (weight portion) of black slurry in embodiment 1：
| Sample sequence number | 1 | 2 | 3 |
| Saturated polyester resin | 30 | 47 | 60 |
| Carbon black disperser | 12 | 9 | 5 |
| Carbon black | 20 | 14 | 10 |
| Propylene glycol methyl ether acetate | 15 | 10 | 10 |
| Butyl acetate | 25 | 22 | 10 |
In addition, contrasting for convenience, two kinds of comparative samples of black slurry are made, comparative sample 1 is big with the composition of sample 1
Cause is identical, and difference is：The addition of saturated polyester is 29 weight portions；Comparative sample 2 is roughly the same with the composition of sample 3, area
It is not：The addition of saturated polyester is 61 weight portions.
Sample 1,2 and 3 and comparative sample 1 and 2 are carried out obtaining after mill base performance test respectively, it was concluded that with reference to table 3,
Powder amount too high levels in sample 1 and comparative sample 1, mobility is poor, and fineness is unqualified after grinding；Sample 3 and comparative sample 2
Blackness it is too low, hiding lack.The best performance of the black slurry of sample 2, therefore, select black slurry samples 2 to carry out in embodiment 1
The preparation of coatings.
Table 3：Black slurry the performance test results
| Test item (testing tool or method) | Mill base sample 1 | Mill base sample 2 | / mill base sample 3 |
| Fineness (Hegman grind gage) | 15um, NG | ＜ 10um, OK | ＜ 10um, OK |
| Viscosity (stormer viscosity meter) | 124KU | 98KU | 76KU |
| Covering power (covering power paper method of testing) | OK | OK | Show money or valuables one carries unintentionally, NG |
The preparation method of coatings is as follows in the present embodiment：
(1) by saturated polyester, black slurry samples 2, organotin top layer drier, organotin deep layer drier, levelling agent, gold
Category adhesion promoter, diluent respectively according in table 1 ratio mix, diluent include DAA, methyl iso-butyl ketone (MIBK),
Propylene glycol methyl ether acetate, butyl acetate, ethyl acetate, stir 12min at 30 DEG C, and mixing speed is 500r/min, is obtained
Mixture A；
(2) aerosil of ratio in table 1 is added in the mixture A that step (1) is obtained and stirs 25min, stirred
Speed is mixed for 2500r/min, coatings are obtained.
Embodiment 2
Present embodiments provide a kind of coatings, with reference to shown in table 1, including following components, 60 parts of saturated polyester is black
20 parts of mill base, 0.4 part of organotin top layer drier, 0.2 part of organotin deep layer drier, 0.2 part of levelling agent, aerosil
4 parts, 12.2 parts of diluent, diluent includes 2.5 parts of DAA, 1.2 parts of methyl iso-butyl ketone (MIBK), propylene glycol methyl ether acetate
1.2 parts, 5 parts of butyl acetate, 2.3 parts of ethyl acetate；3 parts of metal adhesion accelerator, the above is calculated in parts by weight.
In the coatings of the present embodiment, saturated polyester is the linear saturated polyester of HMW, and molecular weight is more than
10000, there is superpower adhesive force to common plastics and metal；It is double due to not containing undersaturated carbon carbon in molecular backbone
Key, will not form II-II conjugated structures, without conductive structure；And molecular weight is high, volume contraction is small after film forming, it is to avoid knot
Caved in inside structure and cause defect, can further increase insulating properties.
The carbon black that the present embodiment is used is blackness high insulation carbon black, and specific surface area is 120m2/ g~350m2/ g, blackness is high,
Strong covering power, heat resistance are good, good insulating.
The aerosil of the present embodiment plays effective photoextinction in film, can make spraying or printing insulation
Sample after coating reaches preferable outward appearance and feel.
The auxiliary agent of the present embodiment includes organotin top layer drier, organotin deep layer drier, levelling agent, metal adhesion
Accelerator, performance and outward appearance for adjusting paint film.
The diluent of the present embodiment is added according to the above ratio, it is to avoid coatings are excessively dilute or feeding-up, contributes to paint film levelling.
The coatings of the present embodiment carry out covering power test, test result display covering power OK with covering power paper.
The coatings of the present embodiment can react with PIC and solidify, in other embodiments can also with it is modified
PIC reaction solidification, solidifies at 80 DEG C of baking temperature, and baking temperature can be consolidated for 0 DEG C~85 DEG C in other embodiments
Change.
Also black slurry samples 2 are selected in the present embodiment carries out the preparation of coatings, the preparation method of black slurry and insulation
The preparation method of coating, it is in the same manner as in Example 1.
Embodiment 3
Present embodiments provide a kind of coatings, with reference to shown in table 1, including following components, 50 parts of saturated polyester is black
22 parts of mill base, 0.5 part of organotin top layer drier, 0.3 part of organotin deep layer drier, 0.4 part of levelling agent, aerosil
2 parts, 10 parts of diluent, diluent includes 1 part of methyl iso-butyl ketone (MIBK), 2 parts of propylene glycol methyl ether acetate, 5 parts of butyl acetate, acetic acid
2 parts of ethyl ester；4 parts of metal adhesion accelerator, the above is calculated in parts by weight.
In the coatings of the present embodiment, saturated polyester is the linear saturated polyester of HMW, and molecular weight is more than
10000, there is superpower adhesive force to common plastics and metal；It is double due to not containing undersaturated carbon carbon in molecular backbone
Key, will not form II-II conjugated structures, without conductive structure；And molecular weight is high, volume contraction is small after film forming, it is to avoid knot
Caved in inside structure and cause defect, can further increase insulating properties.
The carbon black that the present embodiment is used is blackness high insulation carbon black, and specific surface area is 120m2/ g~350m2/ g, blackness is high,
Strong covering power, heat resistance are good, good insulating.
The aerosil of the present embodiment plays effective photoextinction in film, can make spraying or printing insulation
Sample after coating reaches preferable outward appearance and feel.
The auxiliary agent of the present embodiment includes organotin top layer drier, organotin deep layer drier, levelling agent, metal adhesion
Accelerator, performance and outward appearance for adjusting paint film.
The diluent of the present embodiment is added according to the above ratio, it is to avoid coatings are excessively dilute or feeding-up, contributes to paint film levelling.
The coatings of the present embodiment carry out covering power test, test result display covering power OK with covering power paper.
The coatings of the present embodiment can react with PIC and solidify, in other embodiments can also with it is modified
PIC reaction solidification, solidifies at 80 DEG C of baking temperature, and baking temperature can be consolidated for 0 DEG C~85 DEG C in other embodiments
Change.
Also black slurry samples 2 are selected in the present embodiment carries out the preparation of coatings, the preparation method of black slurry and insulation
The preparation method of coating, it is in the same manner as in Example 1.
Embodiment 4
Present embodiments provide a kind of coatings, with reference to shown in table 1, including following components, 40 parts of saturated polyester is black
12 parts of mill base, 0.1 part of organotin top layer drier, 0.1 part of organotin deep layer drier, 0.1 part of levelling agent, aerosil
5 parts, 5 parts of diluent, diluent includes 1 part of propylene glycol methyl ether acetate, 4 parts of butyl acetate；1 part of metal adhesion accelerator,
Below calculate in parts by weight.
In the coatings of the present embodiment, saturated polyester is the linear saturated polyester of HMW, and molecular weight is more than
10000, there is superpower adhesive force to common plastics and metal；It is double due to not containing undersaturated carbon carbon in molecular backbone
Key, will not form II-II conjugated structures, without conductive structure；And molecular weight is high, volume contraction is small after film forming, it is to avoid knot
Caved in inside structure and cause defect, can further increase insulating properties.
The carbon black that the present embodiment is used is blackness high insulation carbon black, and specific surface area is 120m2/ g~350m2/ g, blackness is high,
Strong covering power, heat resistance are good, good insulating.
The aerosil of the present embodiment plays effective photoextinction in film, can make spraying or printing insulation
Sample after coating reaches preferable outward appearance and feel.
The auxiliary agent of the present embodiment includes organotin top layer drier, organotin deep layer drier, levelling agent, metal adhesion
Accelerator, performance and outward appearance for adjusting paint film.
The diluent of the present embodiment is added according to the above ratio, it is to avoid coatings are excessively dilute or feeding-up, contributes to paint film levelling.
The coatings of the present embodiment carry out covering power test, test result display covering power OK with covering power paper.
The coatings of the present embodiment can react with PIC and solidify, in other embodiments can also with it is modified
PIC reaction solidification, solidifies at 80 DEG C of baking temperature, and baking temperature can be consolidated for 0 DEG C~85 DEG C in other embodiments
Change.
Also black slurry samples 2 are selected in the present embodiment carries out the preparation of coatings, the preparation method of black slurry and insulation
The preparation method of coating, it is in the same manner as in Example 1.
Embodiment 5
Present embodiments provide a kind of coatings, with reference to shown in table 1, including following components, 55 parts of saturated polyester is black
25 parts of mill base, 0.3 part of organotin top layer drier, 0.4 part of organotin deep layer drier, 0.5 part of levelling agent, aerosil
3 parts, 20 parts of diluent, diluent includes 4 parts of DAA, 1 part of methyl iso-butyl ketone (MIBK), 3 parts of propylene glycol methyl ether acetate, acetic acid
8 parts of butyl ester, 4 parts of ethyl acetate；2 parts of metal adhesion accelerator, the above is calculated in parts by weight.
In the coatings of the present embodiment, saturated polyester is the linear saturated polyester of HMW, and molecular weight is more than
10000, there is superpower adhesive force to common plastics and metal；It is double due to not containing undersaturated carbon carbon in molecular backbone
Key, will not form II-II conjugated structures, without conductive structure；And molecular weight is high, volume contraction is small after film forming, it is to avoid knot
Caved in inside structure and cause defect, can further increase insulating properties.
The carbon black that the present embodiment is used is blackness high insulation carbon black, and specific surface area is 120m2/ g~350m2/ g, blackness is high,
Strong covering power, heat resistance are good, good insulating.
The aerosil of the present embodiment plays effective photoextinction in film, can make spraying or printing insulation
Sample after coating reaches preferable outward appearance and feel.
The auxiliary agent of the present embodiment includes organotin top layer drier, organotin deep layer drier, levelling agent, metal adhesion
Accelerator, performance and outward appearance for adjusting paint film.
The diluent of the present embodiment is added according to the above ratio, it is to avoid coatings are excessively dilute or feeding-up, contributes to paint film levelling.
The coatings of the present embodiment carry out covering power test, test result display covering power OK with covering power paper.
The coatings of the present embodiment can react with PIC and solidify, in other embodiments can also with it is modified
PIC reaction solidification, solidifies at 80 DEG C of baking temperature, and baking temperature can be consolidated for 0 DEG C~85 DEG C in other embodiments
Change.
Also black slurry samples 2 are selected in the present embodiment carries out the preparation of coatings, the preparation method of black slurry and insulation
The preparation method of coating, it is in the same manner as in Example 1.
Comparative example 1
This comparative example provides a kind of coatings, including following components, and 71 parts of saturated polyester, 13 parts of black slurry is organic
1 part of tin top layer drier, 1 part of organotin deep layer drier, 1 part of levelling agent, 5 parts of aerosil, 20 parts of diluent, dilution
Agent includes 1 part of DAA, 1 part of methyl iso-butyl ketone (MIBK), 4 parts of propylene glycol methyl ether acetate, 12 parts of butyl acetate, ethyl acetate 2
Part；8 parts of metal adhesion accelerator, the above is calculated in parts by weight.This comparative example is roughly the same with embodiment 1, is distinguished as
Saturated polyester, black slurry, the content of aerosil.
The coatings of this comparative example carry out covering power test, test result display covering power NG with covering power paper.
The coatings of this comparative example can react with PIC and solidify, in other embodiments can also with it is modified
PIC reaction solidification, solidifies at 80 DEG C of baking temperature, and baking temperature can be consolidated for 0 DEG C~85 DEG C in other embodiments
Change.
Also black slurry samples 2 are selected in this comparative example carries out the preparation of coatings, the preparation method of black slurry and insulation
The preparation method of coating, it is in the same manner as in Example 1.
Comparative example 2
This comparative example provides a kind of coatings, and with reference to shown in table 1, including following components, 39 parts of saturated polyester is black
20 parts of mill base, 0.1 part of organotin top layer drier, 0.1 part of organotin deep layer drier, 0.1 part of levelling agent, aerosil
6 parts, 5 parts of diluent, diluent includes 1 part of propylene glycol methyl ether acetate, 4 parts of butyl acetate；1 part of metal adhesion accelerator,
Below calculate in parts by weight.This comparative example is roughly the same with embodiment 4, is distinguished as saturated polyester, black slurry, gas phase dioxy
The content of SiClx.
The coatings of this comparative example carry out covering power test, test result display covering power OK with covering power paper.
The coatings of this comparative example can react with PIC and solidify, in other embodiments can also with it is modified
PIC reaction solidification, solidifies at 80 DEG C of baking temperature, and baking temperature can be consolidated for 0 DEG C~85 DEG C in other embodiments
Change.
Also black slurry samples 2 are selected in this comparative example carries out the preparation of coatings, the preparation method of black slurry and insulation
The preparation method of coating, it is in the same manner as in Example 1.
Embodiment 6
In the coatings that embodiment 1~5 and comparative example 1,2 are prepared, polyisocyanate is added with reference to the ratio of table 1
Ester, can also add modified polyisocyanate in other embodiments, the PIC weight portion added wherein in comparative example 1
Identical with what embodiment 1 was added, the PIC weight portion added in comparative example 2 is identical with what embodiment 4 was added, stirring
5min, mixing speed is 200r/min, and whipping temp is 30 DEG C, obtains compound, and compound is sprayed on stainless steel substrate,
The thickness of application is 10 μm, and 80 DEG C of baking 25min, respectively obtain spraying sample in an oven.
After the toasted solidification of coatings of the present embodiment, the linear saturated polyester of HMW and PIC occur
Addition reaction forms network cross-linked structure, and blackness carbon black high and aerosil closely can inlay in the coating, therefore can be with
Obtain high covering power, the insulation coating of scumbling (10 μm).
The coatings of embodiment 1~5 and comparative example 1,2 are sprayed at the spraying sample difference obtained on stainless steel substrate
Carry out adhesive force test, electrical breakdown test, water and boil test, hot and humid test, thermal shock test, detection method is as follows, examines
The results are shown in Table 4 for survey.
Adhesive force is tested：By GB9286-1998 standard testings.
Electrical breakdown is tested：(model HJC-5KV, Jilin Province Hua Yang are tested using computer controls voltage breakdown determining instrument
Equipment Co., Ltd together), voltage rises to untill puncturing coating always from 0 volt, and voltage when puncturing coating is recorded as puncturing
Voltage.
Water boils test：Soaked in 85 DEG C of water-bath 30 minutes, then observe coating surface situation and carry out adhesive force
Test.
Hot and humid test：At 85 DEG C, placed in the climatic chamber of humidity 85% 500 hours, then observe coating table
Face situation simultaneously carries out adhesive force test.
Thermal shock is tested：It 5 hours is a circulation to be preserved at 85 DEG C again after being preserved 5 hours at -40 DEG C, and 50 are done altogether
Circulation, then observes coating surface situation and carries out adhesive force test.
Table 4：The performance test results of embodiment 1~5 and comparative example 1,2
Knowable to the test result of various embodiments above, comparative example and table 4, the covering power of the spraying sample of embodiment 1~5
All it is OK, and breakdown voltage is all in more than 500V；And spraying sample covering power that comparative example 1 is obtained is too poor, comparative example 2
The spraying sample breakdown voltage for arriving is much smaller than 500V.Coatings obtained in illustrating the proportioning provided according to the present invention have excellent
Covering power and insulating properties, the coatings of wherein embodiment 5 be sprayed at obtained on stainless steel substrate spraying sample property
Can be optimal, it is most highly preferred embodiment of the invention.
The coatings of embodiment 5 are sprayed at the spraying sample properties test whole OK obtained on stainless steel substrate,
And breakdown voltage can substitute insulation paster completely more than 550v in use is implemented.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of coatings, it is characterised in that including following components：
40~70 parts of saturated polyester,
12~25 parts of black slurry,
0.1~1 part of organotin top layer drier,
0.1~1 part of organotin deep layer drier,
0.1~1 part of levelling agent,
2~7 parts of aerosil,
5~20 parts of diluent,
1~8 part of metal adhesion accelerator,
Below calculate in parts by weight.
2. coatings according to claim 1, it is characterised in that including following components：
60 parts of saturated polyester,
20 parts of black slurry,
0.4 part of organotin top layer drier,
0.2 part of organotin deep layer drier,
0.2 part of levelling agent,
4 parts of aerosil,
12.2 parts of diluent,
3 parts of metal adhesion accelerator,
Below calculate in parts by weight.
3. coatings according to claim 1, it is characterised in that
The black slurry includes following components：
30~60 parts of saturated polyester,
5~12 parts of carbon black disperser,
10~20 parts of carbon black,
20~40 parts of diluent,
Below calculate in parts by weight.
4. coatings according to claim 3, it is characterised in that
The black slurry includes following components：
47 parts of saturated polyester,
9 parts of carbon black disperser,
14 parts of carbon black,
32 parts of diluent,
Below calculate in parts by weight.
5. coatings according to any one of Claims 1 to 4, it is characterised in that
The saturated polyester is linear saturated polyester of the molecular weight more than 10000；And/or,
The diluent is in DAA, methyl iso-butyl ketone (MIBK), propylene glycol methyl ether acetate, butyl acetate, ethyl acetate
One or more.
6. coatings according to claim 3 or 4, it is characterised in that
The carbon black is insulation carbon black, and specific surface area is 120m2/ g~350m2/g。
7. the preparation method of the coatings as any one of claim 1~6, it is characterised in that comprise the following steps：
(1) by saturated polyester, black slurry, organotin top layer drier, organotin deep layer drier, levelling agent, metal adhesion
Stirred after accelerator, diluent mixing, obtain mixture A；
(2) stirring in the mixture A that the step (1) is obtained is incorporated fumed silica into, the coatings are obtained.
8. the preparation method of coatings according to claim 7, it is characterised in that
In the step (1), the condition of stirring is：Whipping temp is 20 DEG C~40 DEG C, and mixing speed is 400r/min~600r/
Min, mixing time is 10min~15min；
In the step (2), the condition of stirring is：Whipping temp is constant, and mixing speed is 2000r/min~2500r/min, is stirred
The time is mixed for 20min~30min.
9. the preparation method of the coatings according to claim 7 or 8, it is characterised in that
The preparation of the black slurry is comprised the following steps：
(a) by saturated polyester, carbon black disperser, diluent mix, temperature be 20 DEG C~40 DEG C, mixing speed be 400r/min
10min~15min is stirred under~600r/min, mixture B is obtained；
B be added to carbon black in mixture B obtained in the step (a) by (), stir 10min~15min, and mixing speed is
800r/min~1200r/min, obtains the black slurry.
10. coatings as any one of claim 1~6 or the preparation as any one of claim 7~9
Application of the coatings that method is prepared on electronic product, it is characterised in that the application includes applying the insulation
Material is used after being mixed with PIC or modified polyisocyanate.
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| CN113150586A (en) * | 2021-04-30 | 2021-07-23 | 江苏古宝材料科技有限公司 | Insulating coating formula based on nano-grade material and preparation and construction methods thereof |
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