CN109135385A - The preparation method of linear resistance insulating coating - Google Patents
The preparation method of linear resistance insulating coating Download PDFInfo
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- CN109135385A CN109135385A CN201810883881.4A CN201810883881A CN109135385A CN 109135385 A CN109135385 A CN 109135385A CN 201810883881 A CN201810883881 A CN 201810883881A CN 109135385 A CN109135385 A CN 109135385A
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- powder
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- linear resistance
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- 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
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- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
Abstract
The invention discloses a kind of preparation method of linear resistance insulating coating, linear resistance insulating coating be using Zuoyun soil, chromium oxide, calcium sulfate, a variety of quality raw materials of zinc oxide is major ingredients, then aluminium dihydrogen phosphate and deionized water are added, by being mixed with.The present invention adds ZnO powder using raw material, and using aluminium dihydrogen phosphate as solidification binder, pass through insulating coating curing process, moisture in insulating coating is excluded, increase the intensity of insulating coating simultaneously, make linear resistance insulating coating that there is highly resistance folding, high resistance to compression, excellent hydration resistance, improves service life and the quality of linear resistance insulating coating.Insulating coating preparation process of the present invention is simple to operation, and advantages of nontoxic raw materials is pollution-free, easily obtains.Obtained insulating coating easily coats, good insulating, and strength of coating height is not easily to fall off, and coating does not influence the resistivity and the linearity of linear resistive element.The insulating coating is successfully realized the protective effect to linear resistive element.
Description
Technical field
The present invention relates to a kind of resistance preparation methods, especially further relate to a kind of preparation method of linear resistance, are applied to
Resistance electrical Element Technology field.
Background technique
Linear resistance is a kind of electrical component being seen everywhere in real life, general so common that have metallic resistance, carbon
It is resistance and ZnO ceramic resistor.But in practical applications, linear resistance also lacks a kind of effective coating deprotection linear resistance
Element to extend the service life of linear resistive element, while can make linear resistance in more applications.It is existing
Linear resistance does not have good insulating protective layer, cannot play the role of protecting linear resistive element, while also will affect linear
The electric properties such as the resistivity and the linearity of resistance.
Summary of the invention
In order to solve prior art problem, it is an object of the present invention to overcome the deficiencies of the prior art, and to provide one kind
The preparation method of linear resistance insulating coating can prepare the insulating coating of intensity height, good insulation preformance, not change linear resistance
Resistivity and the linearity, can be simultaneously reached the purpose of protection element, the application requirement of more occasions can be met.This
Invented technology is simple, easily controllable, low in cost.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of preparation method of linear resistance insulating coating, the specific steps are as follows:
A. take Zuoyun soil powder, chromium oxide powder, calcium sulfate powder, Zinc oxide powder as powder material, by Zuoyun soil
Powder, chromium oxide powder, calcium sulfate powder, Zinc oxide powder are mixed with dispersing agent deionized water, then carry out ball milling at least 1h, so
Aluminium dihydrogen phosphate or aluminium dihydrogen phosphate aqueous solution are added after mixing in powder material afterwards, and painting is made in ball milling 0.5-1h
Layer slurry；
B. by the coating paste homogenous application prepared in the step a on linear resistive element；
C. the linear resistive element of coating paste will be coated in the step b, linear electricity is made in heated curing process
Hinder insulating coating.
As currently preferred technical solution, in the step a, Zuoyun soil powder, chromium oxide powder, sulfuric acid calcium powder
Point ratio that body, Zinc oxide powder respectively account for the gross mass of powder material is as follows:
Zuoyun soil powder quality accounting is 80-90%；
Chromium oxide powder quality accounting is 5-15%；
Calcium sulfate powder quality accounting is 0.5-5%；
Oxide powder and zinc weight accounting is 0.5-5%.
It is preferred that using the mass ratio of Zuoyun soil powder, chromium oxide powder, calcium sulfate powder, Zinc oxide powder for (75-87):
(10-16):(2-3):1。
As currently preferred technical solution, in the step a, when former using aluminium dihydrogen phosphate aqueous solution and powder
When expecting mixed preparing coating paste, it is preferred to use the mass percent concentration of aluminium dihydrogen phosphate aqueous solution is not higher than 83.3wt.%,
The quality and powder material total mass ratio of aluminium dihydrogen phosphate aqueous solution are 1:(1-2)；The quality of preferred dispersants deionized water with
Powder haul total mass ratio is 5:(4-9).When using aluminium dihydrogen phosphate and when powder material mixed preparing coating paste, preferred phosphorus
The additional amount of acid dihydride aluminium is the ratio of 6:(300-500) according to the oxide powder and zinc body mass ratio in aluminium dihydrogen phosphate and powder material
Example is mixed.Before powder material carries out ball milling, when mixing powder material with dispersing agent deionized water, it is preferably added to
Auxiliary dispersants, the additional amount of auxiliary dispersants are 3:(5- according to the oxide powder and zinc body mass ratio in dispersing agent and powder material
6) ratio is mixed.
As currently preferred technical solution, in the step b, first that the ball milling in the step a is good painting
Layer slurry is poured out, and is then crossed 120 meshes, is obtained even-grained coating paste, then by the coating paste homogenous application after sieving
On linear resistive element.By coating paste homogenous application on linear resistive element, preferably control coats front and back linear resistance
Element quality difference is not less than 1.5g.
It is 200- to the temperature that coating paste is heating and curing in the step c as currently preferred technical solution
500 DEG C, the soaking time that be heating and curing is 1-3h.It is further preferably 230-400 to the temperature that coating paste is heating and curing
℃。
The present invention compared with prior art, has following obvious prominent substantive distinguishing features and remarkable advantage:
1. the method for the present invention adds ZnO powder using raw material, and using aluminium dihydrogen phosphate as solidification binder, by exhausted
Moisture in insulating coating is excluded, while increasing the intensity of insulating coating by edge curing of coatings technical process, keeps linear resistance exhausted
Edge coating has highly resistance folding, high resistance to compression, excellent hydration resistance, improves service life and the quality of linear resistance insulating coating；
2. linear resistance insulating coating preparation method of the present invention, simple process is easy to operate, and preparation is time-consuming short and raw materials used
It is nontoxic and pollution-free；
3. the coating insulation that the method for the present invention is prepared is good, intensity height is not easily to fall off, does not change the resistance of linear resistance
Rate and the linearity, while can play the role of protecting linear resistance.
Above scheme is described further below in conjunction with specific implementation example, the preferred embodiment of the present invention is described in detail such as
Under:
Embodiment one
In the present embodiment, a kind of preparation method of linear resistance insulating coating, the specific steps are as follows:
A. the Cr of the Zuoyun 435g soil powder, 50g are taken2O3The CaSO of powder, 10g4·2H2The ZnO powder conduct of O powder, 5g
Powder material mixes powder material with 3g auxiliary dispersants and 600g dispersing agent deionized water, is added in ball mill, carries out ball
Grind 1h, then powder material after mixing, then be added in ball grinder and add 250g aluminium dihydrogen phosphate, continue ball milling
Coating paste is made in 1h；
B. the good coating paste of the ball milling in the step a is poured out, then crosses 120 meshes, obtains even-grained painting
Layer slurry, then by the coating paste homogenous application after sieving on the side of ZnO linear resistive element, formed linearly electric to ZnO
The side clad of resistance element, control coating front and back linear resistive element of poor quality is 1.5g；
C. heated after the coating paste drying that the ZnO linear resistive element of coating paste will be coated in the step b
Curing process is 230 DEG C to the temperature that coating paste is heating and curing, and it is linear that ZnO is made for 3h in the soaking time that be heating and curing
Resistance insulation coating.
The present embodiment linear resistance insulating coating is to be with Zuoyun soil, chromium oxide, calcium sulfate, a variety of quality raw materials of zinc oxide
Major ingredient, then aluminium dihydrogen phosphate and deionized water are added, by being mixed with.Insulating coating can play guarantor in practical applications
The effect of linear resistive element is protected, while the resistivity and the linearity of linear resistance will not be changed.The present embodiment ZnO linear resistance
The preparation method of insulating coating is simple, and coating is nontoxic and pollution-free, good insulation preformance, and intensity height is not easily to fall off, does not change linear electricity
The resistivity and the linearity of resistance, so as to play the purpose of protection ZnO linear resistance well.The present embodiment is added using raw material
ZnO powder, and will be in insulating coating by insulating coating curing process as solidification binder using aluminium dihydrogen phosphate
Moisture exclude, while increasing the intensity of insulating coating, make ZnO linear resistance insulating coating that there is highly resistance folding, high resistance to compression, excellent
Hydration resistance, improve service life and the quality of ZnO linear resistance insulating coating.
Embodiment two
The present embodiment is basically the same as the first embodiment, and is particular in that:
In the present embodiment, a kind of preparation method of linear resistance insulating coating, the specific steps are as follows:
A. the Cr of the Zuoyun 400g soil powder, 80g are taken2O3The CaSO of powder, 15g4·2H2The ZnO powder conduct of O powder, 5g
Powder material mixes powder material with 3g auxiliary dispersants and 650g dispersing agent deionized water, is added in ball mill, carries out ball
Grind 1h, then powder material after mixing, then be added in ball grinder and add 332g aluminium dihydrogen phosphate, continue ball milling
Coating paste is made in 0.5h；
B. the good coating paste of the ball milling in the step a is poured out, then crosses 120 meshes, obtains even-grained painting
Layer slurry, then by the coating paste homogenous application after sieving on the side of metal linear resistive element, formed to metal linear
The side clad of resistive element, control coating front and back linear resistive element of poor quality is 1.5g；
C. after the coating paste drying that the metal linear resistive element of coating paste will be coated in the step b, through adding
Heat cure processing is 250 DEG C to the temperature that coating paste is heating and curing, and metal is made for 2h in the soaking time that be heating and curing
Linear resistance insulating coating.
The present embodiment linear resistance insulating coating is to be with Zuoyun soil, chromium oxide, calcium sulfate, a variety of quality raw materials of zinc oxide
Major ingredient, then aluminium dihydrogen phosphate and deionized water are added, by being mixed with.Insulating coating can play guarantor in practical applications
The effect of linear resistive element is protected, while the resistivity and the linearity of linear resistance will not be changed.The present embodiment metallic resistance is exhausted
The preparation method of edge coating is simple, and coating is nontoxic and pollution-free, good insulation preformance, and intensity height is not easily to fall off, does not change linear resistance
Resistivity and the linearity, so as to play well protection metallic resistance purpose.The present embodiment adds ZnO powder using raw material
Body, and using aluminium dihydrogen phosphate as solidification binder, by insulating coating curing process, by the moisture in insulating coating
It excludes, while increasing the intensity of insulating coating, make metal linear resistance insulation coating that there is highly resistance folding, high resistance to compression, excellent resist
Hydrating capacity improves service life and the quality of metal linear resistance insulation coating.
Embodiment three
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, a kind of preparation method of linear resistance insulating coating, the specific steps are as follows:
A. the Cr of the Zuoyun 450g soil powder, 60g are taken2O3The CaSO of powder, 12g4·2H2The ZnO powder conduct of O powder, 6g
Powder material mixes powder material with 3g auxiliary dispersants and 560g dispersing agent deionized water, is added in ball mill, carries out ball
Grind 1h, then powder material after mixing, then be added in ball grinder add 500g aluminium dihydrogen phosphate and 100g go from
Sub- water continues ball milling 0.5h, coating paste is made；
B. the good coating paste of the ball milling in the step a is poured out, then crosses 120 meshes, obtains even-grained painting
Layer slurry, then by the coating paste homogenous application after sieving on the side of carbon system linear resistive element, formed to carbon anchor line (string)
The side clad of resistive element, control coating front and back carbon system linear resistive element of poor quality is 1.5g；
C. after the coating paste drying that the carbon system linear resistive element of coating paste will be coated in the step b, through adding
Heat cure processing is 400 DEG C to the temperature that coating paste is heating and curing, and carbon system is made for 1h in the soaking time that be heating and curing
Linear resistance insulating coating.
The present embodiment linear resistance insulating coating is to be with Zuoyun soil, chromium oxide, calcium sulfate, a variety of quality raw materials of zinc oxide
Major ingredient, then aluminium dihydrogen phosphate and deionized water are added, by being mixed with.Insulating coating can play guarantor in practical applications
The effect of linear resistive element is protected, while the resistivity and the linearity of linear resistance will not be changed.The present embodiment carbon system resistance is exhausted
The preparation method of edge coating is simple, and coating is nontoxic and pollution-free, good insulation preformance, and intensity height is not easily to fall off, does not change linear resistance
Resistivity and the linearity, so as to play well protection carbon system resistance purpose.The present embodiment adds ZnO powder using raw material
Body, and using aluminium dihydrogen phosphate as solidification binder, by insulating coating curing process, by the moisture in insulating coating
It excludes, while increasing the intensity of insulating coating, make carbon anchor line (string) resistance insulation coating that there is highly resistance folding, high resistance to compression, excellent resist
Hydrating capacity improves service life and the quality of carbon anchor line (string) resistance insulation coating.
In conclusion the preparation method of the insulating coating of the above embodiment of the present invention linear resistance, insulating coating preparation
Simple process is easy to operate, and advantages of nontoxic raw materials is pollution-free, easily obtains.Obtained insulating coating easily coats, good insulating, strength of coating
It is high not easily to fall off, and coating does not influence the resistivity and the linearity of linear resistive element.The insulating coating is successfully realized to line
The protective effect of property resistive element.
The embodiment of the present invention is illustrated above, but the present invention is not limited to the above embodiments, it can also be according to this hair
The purpose of bright innovation and creation makes a variety of variations, and that does under the Spirit Essence and principle of all technical solutions according to the present invention changes
Become, modification, substitution, combination or simplified, should be equivalent substitute mode, as long as meeting goal of the invention of the invention, as long as not
Away from the technical principle and inventive concept of the preparation method of linear resistance insulating coating of the present invention, protection model of the invention is belonged to
It encloses.
Claims (10)
1. a kind of preparation method of linear resistance insulating coating, which is characterized in that specific step is as follows:
A. take Zuoyun soil powder, chromium oxide powder, calcium sulfate powder, Zinc oxide powder as powder material, by Zuoyun soil powder,
Chromium oxide powder, calcium sulfate powder, Zinc oxide powder are mixed with dispersing agent deionized water, then carry out ball milling at least 1h, are then existed
Powder material adds aluminium dihydrogen phosphate or aluminium dihydrogen phosphate aqueous solution after mixing, and coating slurry is made in ball milling 0.5-1h
Material；
B. by the coating paste homogenous application prepared in the step a on linear resistive element；
C. the linear resistive element of coating paste will be coated in the step b, it is exhausted that linear resistance is made in heated curing process
Edge coating.
2. the preparation method of linear resistance insulating coating according to claim 1, it is characterised in that: left in the step a
Point ratio that cloud soil powder, chromium oxide powder, calcium sulfate powder, Zinc oxide powder respectively account for the gross mass of powder material is as follows:
Zuoyun soil powder quality accounting is 80-90%；
Chromium oxide powder quality accounting is 5-15%；
Calcium sulfate powder quality accounting is 0.5-5%；
Oxide powder and zinc weight accounting is 0.5-5%.
3. the preparation method of linear resistance insulating coating according to claim 2, it is characterised in that: in the step a, adopt
It is (75-87): (10-16): (2-3) with the mass ratio of Zuoyun soil powder, chromium oxide powder, calcium sulfate powder, Zinc oxide powder:
1。
4. the preparation method of linear resistance insulating coating according to claim 1, it is characterised in that: in the step a, when
When using aluminium dihydrogen phosphate aqueous solution and powder material mixed preparing coating paste, using the quality hundred of aluminium dihydrogen phosphate aqueous solution
Specific concentration is divided to be not higher than 83.3wt.%, the quality and powder material total mass ratio of aluminium dihydrogen phosphate aqueous solution are 1:(1-2)；Point
The quality and powder haul total mass ratio of powder deionized water are 5:(4-9).
5. the preparation method of linear resistance insulating coating according to claim 1, it is characterised in that: in the step a, when
Using aluminium dihydrogen phosphate and when powder material mixed preparing coating paste, the additional amount of aluminium dihydrogen phosphate according to aluminium dihydrogen phosphate with
Oxide powder and zinc body mass ratio in powder material is mixed for the ratio of 6:(300-500).
6. the preparation method of linear resistance insulating coating according to claim 1, it is characterised in that: in the step a,
Before powder material carries out ball milling, when mixing powder material with dispersing agent deionized water, auxiliary dispersants, auxiliary point is added
Ratio of the additional amount of powder according to the oxide powder and zinc body mass ratio in dispersing agent and powder material for 3:(5-6) is mixed.
7. the preparation method of linear resistance insulating coating according to claim 1, it is characterised in that: first in the step b
First the good coating paste of the ball milling in the step a is poured out, 120 meshes is then crossed, obtains even-grained coating paste, then
By the coating paste homogenous application after sieving on linear resistive element.
8. the preparation method of linear resistance insulating coating according to claim 1, it is characterised in that:, will in the step b
For coating paste homogenous application on linear resistive element, control coating front and back linear resistive element is of poor quality to be not less than 1.5g.
9. the preparation method of linear resistance insulating coating according to claim 1, it is characterised in that: right in the step c
The temperature that coating paste is heating and curing is 200-500 DEG C, and the soaking time that be heating and curing is 1-3h.
10. the preparation method of linear resistance insulating coating according to claim 9, it is characterised in that: in the step c,
It is 230-400 DEG C to the temperature that coating paste is heating and curing.
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| CN201810883881.4A CN109135385B (en) | 2018-08-06 | 2018-08-06 | Preparation method of linear resistor insulating coating |
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| CN201810883881.4A CN109135385B (en) | 2018-08-06 | 2018-08-06 | Preparation method of linear resistor insulating coating |
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| US6200680B1 (en) * | 1994-06-06 | 2001-03-13 | Nippon Shokubai Co., Ltd. | Fine zinc oxide particles, process for producing the same, and use thereof |
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