CN1931951A - Antistatic insulating base material - Google Patents
Antistatic insulating base material Download PDFInfo
- Publication number
- CN1931951A CN1931951A CN 200510029701 CN200510029701A CN1931951A CN 1931951 A CN1931951 A CN 1931951A CN 200510029701 CN200510029701 CN 200510029701 CN 200510029701 A CN200510029701 A CN 200510029701A CN 1931951 A CN1931951 A CN 1931951A
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- Prior art keywords
- tio
- titanium dioxide
- water based
- based nano
- neutral water
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Abstract
The antistatic insulating base material includes substrate and sol coating on the surface of the substrate. The substrate is printed circuit board, electronic part, plastic, rubber, metal, metal with baking varnish, organic material, inorganic material or their composition; and the sol coating is neutral water-base nanometer TiO2 sol coating with particle size of 0.1-100 nm, thickness of 1 nm to 1 micron, and film resistance of 107-1010 ohm. The antistatic insulating base material has the features of static electricity preventing property, antifouling property, etc.
Description
Technical field
The present invention relates to a kind of base material, be specially a kind of through neutral water based nano-titanium dioxide (TiO
2) the colloidal sol base material that has anti-electrostatic and insulating property after handling.
Background technology
The material of base material can include the matrix material and the electronic component of plastics class (as PMMA, PC, PP, PET, PVC, Epoxy plate), printed circuit board (PCB), rubber-like, metal species, baking vanish metal sheet, organic materials, inorganic materials or above material.These base materials in use because electrostatic interaction can adsorb dust, influence the performance of base material.At present the antistatic method that adopts has 2 kinds: 1. alleviate or suppress it and electrify; 2. the static that produces is leaked rapidly to reduce electrostatic and accumulate in a large number.The static inhibitor kind that is adopted is a lot, by its chemical constitution and structure different with and hydrophilic group can ionization with ionization after electrically charged character different, can be divided into anionic, cationic, amphoteric, non-ionic type and polymer permanent antistatic agent.Wherein cationic static inhibitor antistatic effect excellence, stronger to the sticking power of macromolecular material, but poor heat stability, and the thermostability of thermally sensitive resin had detrimentally affect, also there are in various degree toxicity or pungency; The polymer permanent antistatic agent can make fabric obtain softness, lubricated and water-proof function, and the organosilicon that contains hydrophilic group can be antistatic.But only be suitable for the antistatic property of acrylic fibers, polypropylene fibre and terylene.
Adopt the method for the netted thin lattice of Mould Machining etching that antistatic property is provided in the Chinese patent 03209659.3, have certain practical value.But performance is more single, can only be directed to rubber plate, is unfavorable for promoting.
Along with the information electronic product is compact day by day, it also is harsh day by day requiring for insulating, with the transformer be the existing enameled wire of example can be under general situation 130～240 ℃ of long term operations, can anti-voltage, but quite different under high-frequency pulse voltage up to 10kV.Before transformer will be finished last assembling, in order to prevent the destruction to insulation layer in when coiling, must use polish that coil is insulated with the reinforcement of impregnation method this moment.But the commercial style polish at present can be more than the level and few at 180 ℃, and in recent years because the various performance requriementss of electronic product are more and more high, so properties of materials is also required harsh day by day, as moisture resistance, chemical resistance, good solubility-resistence, heat impedance, therefore polish does not apply gradually and uses, and general polish composition mostly is resin, and viscosity is bigger, need use dedicated solvent or organic solvent if reduce viscosity, the influence of potentiality is arranged for operator and environment.
China also is in the starting stage at present in the developing material development work of novel electrostatic prevention insulating material, does not also have matured product on the market.Chinese patent 02145325.X has mentioned a kind of method that generates inferior conductor antistatic insulating material, adopts electro-insulating rubber as base material, and be equipped with electroconductibility filling acetylene carbon black and carry out modification, be isolator, be again the electrical path that static focus is provided leakage.But this method more complicated need be changed current production devices.
Chinese patent 200410079425.2 provides a kind of insulating material based on polymer plastic, under combustion position, stably sneaks into the glass particle of the category of glass material that contains different softening temperatures.Make respective lines under combustion position, in definite time that continues, still can use.But this insulating material use range is smaller, in order to realize its function, must use the mixing material and the corresponding mixing device of more complicated.
Summary of the invention
The objective of the invention is to remedy the weak point of application facet in the above-mentioned prior art, but a kind of antistatic and insulating substrate of widespread use is provided, contain titanium dioxide (TiO by covering with paint, lacquer, colour wash, etc. one deck at substrate surface
2) the antistatic insulating material of colloidal sol, change the resistance of substrate surface, make the surface have permanent antistatic and insulating characteristic.This antistatic insulating material and organic and inorganic materials compatible good, weathering resistance is good, and the preparation method is simple, processing ease is with low cost.
Neutral water based nano-titanium dioxide (TiO
2) Nano sol is that dielectric ceramic material has quite high specific resistance, so under general situation, dielectric ceramic also often is regarded as isolator.So as long as with neutral water based nano-titanium dioxide (TiO
2) when colloidal sol is coated substrate surface and certain thickness is arranged, its insulativity will show, again because of forming a high dielectric layer, can improve electric field distribution characteristic between lock, the tightly packed electronics that quickens in air that makes owing to nano titanium oxide reduces again, thereby reduces the destruction to insulation layer.So neutral water based nano-titanium dioxide (TiO
2) colloidal sol can heavy insulation performance and endurance quality, it is destroyed to make insulation layer be difficult for.And the heat conduction efficiency of nano titanium oxide is than the polish excellence, though corona is kind of a cold body discharge, produce a large amount of heat unlike electric arc, but the collision of charged particle still produces certain heat energy with absorption, degraded has certain destruction to these heats to the insulating thermochemistry, so can be, thereby thermotolerance be promoted to some extent with heat energy dissipation of a part by the conduction of nanometer insulation layer.
Technical scheme of the present invention is a kind of antistatic insulating base material, comprise the collosol coating of base material, substrate surface coating, it is characterized in that: base materials employed in the matrix material of printed circuit board (PCB), electronic component and plastics class, rubber-like, metal species, baking vanish metal sheet, organic materials, inorganic materials or above material any; Collosol coating in the substrate surface coating is neutral water based nano-titanium dioxide (TiO
2) collosol coating.
After base material cleaned up, with neutral water based nano-titanium dioxide (TiO
2) colloidal sol in carry out surface coated and handle, through baking certain hour drying and forming-film, prepare base material with anti-electrostatic and insulating property.It is characterized in that: with neutral water based nano-titanium dioxide (TiO
2) colloidal sol coats substrate surface and heat drying film forming, this colloidal sol is that the pH value is 6.5～9.5, does not contain the nano titanium oxide (TiO of any binding agent
2) colloidal sol, nontoxic, particle size is at 0.1-100nm, and the base material film layer thickness after the processing is 1nm-1 μ m, have anti-electrostatic, resistant easy clean, prevent that dust from attaching, suppressing and reduce that the substrate surface static charge produces, pre-anti-electricity device product electronic circuit dirt is quick-fried and characteristics such as insulation.
Any of the matrix material of the optional plastics class of base material of the present invention (as PMMA, PC, PP, PET, PVC, Epoxy plate), printed circuit board (PCB), rubber-like, metal species, baking vanish metal sheet, organic materials, inorganic materials, above material etc. and electronic component.
Neutral water based nano-titanium dioxide (TiO wherein
2) colloidal sol is to utilize titanium tetrachloride or titanium sulfate behind dissolved dilution, concentration can be 0.1～80.0%, is adjusted between PH=7.0～9.0 with ammoniacal liquor and produces titanium hydroxide, behind washing filtering, the titanium hydroxide filter cake is scattered in the water, adds proper amount of oxidant and (comprise potassium permanganate (KMnO
4), potassium bichromate (K
2Cr
2O
7), potassiumchromate (K
2CrO
4), chloric acid (KClO
3), potassium perchlorate (KClO
4), potassium hypochlorite (KClO), hydrogen peroxide (H
2O
2) wherein one or more), in 50～90 ℃ of temperature, continue to heat 1～48 hour with the stirring velocity of 30～300rpm after, form metal oxide neutral water based nano-titanium dioxide (TiO
2) colloidal sol, titanium dioxide concentration is between 0.01%～15%.
In order to make neutral water based nano-titanium dioxide (TiO
2) colloidal sol can evenly coat different substrate materials, can in system, add a little tensio-active agents according to the different substrate materials kind, as fluorochemical surfactant, silicon-containing surfactant, nonionogenic tenside, cats product, anion surfactant, amphoterics etc.; The tensio-active agent working concentration is between 0.1～10,000ppm.Tensio-active agent can directly be dissolved in the water, again with neutral water based nano-titanium dioxide (TiO
2) colloidal sol evenly mixes and get final product.
Base material is with neutral water based nano-titanium dioxide (TiO among the present invention
2) method handled of colloidal sol coating can adopt spread coating, crystal pulling method, spraying method any carry out surface coated and handle, through the baking drying and forming-film, wherein drying conditions is adopted low temperature process, temperature is between 70～200 ℃, be 1 minute～24 hours time of drying.
Substrate among the present invention is with neutral water based nano-titanium dioxide (TiO
2) after colloidal sol cover with paint, lacquer, colour wash, etc. to handle, under heat drying, make nano-TiO
2In the substrate surface film forming, do not need too high-temperature, simple to operate, the time is short, and fastness is good.
Utilize TiO among the present invention
2The resistance of film is between 10
6～10
11Ω anti-electrostatic material range of application is covered with paint, lacquer, colour wash, etc. one deck TiO on base material
2Behind the film, can give material surface have anti-electrostatic, resistant easy clean, prevent that dust from attaching, suppressing and reduce that the substrate surface static charge produces, pre-anti-electricity device product electronic circuit board dirt is quick-fried and characteristics such as insulation.
Embodiment
Embodiment 1
Preparation anti-electrostatic PC plate (polycarbonate plate), working method adopts crystal pulling method, and specific operation process is as follows:
(1) the PC plate is cleaned up after, be immersed in neutral water based nano-titanium dioxide (TiO with crystal pulling method
2) in the colloidal sol, then the PC plate is vertically mentioned to breaking away from liquid level.So just can adhere to one deck dissolved glue film at PC plate outside surface;
(2) 100 ℃ baking oven inner drying film forming;
(3) produce static with friction, and measure PC plate surface electrostatic with the static measurer, static value is tested undressed PC plate in the same way less than 30V, and then static value is greater than 1500V;
(4) so can prepare PC plate with antistatic performance with this method.
Embodiment 2
Preparation anti-electrostatic PMMA plate (acrylic, Acrylics), working method adopts spraying method, and specific operation process is as follows:
(1) the PMMA plate is cleaned up after, with spraying method with neutral water based nano-titanium dioxide (TiO
2) colloidal sol evenly is sprayed on the PMMA plate, so just can adhere to one deck dissolved glue film at PMMA plate outside surface;
(2) 70 ℃ baking oven inner drying film forming;
(3) produce static with friction, and measure PMMA plate surface electrostatic with the static measurer, static value is tested undressed PC plate in the same way less than 50V, and then static value is greater than 2200V;
(4) so can prepare PMMA plate with antistatic performance with this method.
Embodiment 3
Preparation anti-static dust-free chamber interseptal board (baking vanish steel plate galvanized or stainless-steel sheet), working method adopts spread coating, and specific operation process is as follows:
(1) the dust free chamber interseptal board is cleaned up after, with spread coating with neutral water based nano-titanium dioxide (TiO
2) colloidal sol, brush uniformly in dust free chamber interseptal board surface.So just can be at dust free chamber interseptal board surface attachment one deck dissolved glue film;
(2) 150 ℃ baking oven inner drying film forming;
(3) produce static with friction, and measure the interseptal board surface electrostatic with the static measurer, the little 20V of static value tests undressed interseptal board in the same way, and then static value is greater than 1300V;
(4) so can prepare interseptal board with antistatic performance with this method.
Embodiment 4
The preparation insulated printed circuit board, working method adopts crystal pulling method, and specific operation process is as follows:
(1) printed circuit board surface is cleaned up after, be immersed in neutral water based nano-titanium dioxide (TiO with crystal pulling method
2) in the colloidal sol, then printed circuit board (PCB) is vertically mentioned to breaking away from liquid level.So just can adhere to one deck dissolved glue film at PC plate outside surface;
(2) in 100 ℃ baking oven in dry film forming;
(3) printed circuit board (PCB) is positioned in the water, and the power supply of connecting printed circuit board (PCB) makes energising, observing printed circuit board (PCB) still can normal operation.Test printed circuit board (PCB) in the same way, find that printed circuit board (PCB) is short-circuited and can't operates in water without insulation processing;
(4) so can prepare printed circuit board (PCB) with insulativity with this method.
Antistatic insulating base material of the present invention has following advantage:
1. various plastic cement, inorganic materials, organic materials substrate surface all can be coated with neutral water based nano-titanium dioxide (TiO
2) colloidal sol, make general base material become base material with anti-electrostatic and insulation function.
2. neutral water based nano-titanium dioxide (TiO
2) sol particle is superfine little, film forming is rapid, strong adhesion, and the outward appearance of base material is unaffected.
3. neutral water based nano-titanium dioxide (TiO
2) colloidal sol is neutral pure water liquid state, and is nontoxic, can not cause secondary pollution.
4. base material is through neutral water based nano-titanium dioxide (TiO
2) after colloidal sol handles, substrate surface have anti-electrostatic, resistant easy clean, prevent that dust from attaching, suppressing and reduce that the substrate surface static charge produces, characteristics such as the quick-fried and insulation of anti-electricity device product electronic circuit board dirt in advance.
Claims (4)
1. antistatic insulating base material, comprise the collosol coating of base material, substrate surface coating, it is characterized in that: base materials employed in the matrix material of printed circuit board (PCB), electronic component and plastics class, rubber-like, metal species, baking vanish metal sheet, organic materials, inorganic materials or above material any; Collosol coating in the substrate surface coating is neutral water based nano-titanium dioxide (TiO
2) collosol coating, neutral water based nano-titanium dioxide (TiO
2) method for making of colloidal sol is to utilize titanium tetrachloride or titanium sulfate behind dissolved dilution, concentration can be 0.1～80.0%, with ammoniacal liquor (NH
4OH) be adjusted between PH=7.0～9.0 and produce titanium hydroxide, behind washing filtering, the titanium hydroxide filter cake is scattered in the water, add and comprise potassium permanganate (KMnO
4), potassium bichromate (K
2Cr
2O
7), potassiumchromate (K
2CrO
4), chloric acid (KClO
3), potassium perchlorate (KClO
4), potassium hypochlorite (KClO), hydrogen peroxide (H
2O
2) in one or more interior proper amount of oxidant, in 50～90 ℃ of temperature, continue to heat 1～48 hour with the stirring velocity of 30～300rpm after, form metal oxide neutral water based nano-titanium dioxide (TiO
2) colloidal sol, titanium dioxide concentration is between 0.01%～15%.
2. a kind of antistatic insulating base material as claimed in claim 1 is characterized in that: at the neutral water based nano-titanium dioxide (TiO of substrate surface coating
2) particle size of collosol coating is at 0.1-100nm; Thicknesses of layers is 1nm-1 μ m; The resistance of film is between 10
6～10
11The Ω scope.
3. a kind of novel electrostatic prevention insulated substrate material as claimed in claim 1 is characterized in that: after base material cleans up, with neutral water based nano-titanium dioxide (TiO
2) method handled of colloidal sol coating can adopt in spread coating, crystal pulling method, the spraying method any to carry out surface coated and handle, through the baking drying and forming-film, wherein drying conditions is adopted low temperature process, and temperature is between 70～200 ℃, and be 1 minute～24 hours time of drying.
4. neutral water based nano-titanium dioxide (TiO as claimed in claim 1
2) colloidal sol, evenly coat different substrate materials for making, can in system, add the tensio-active agent that comprises fluorochemical surfactant, silicon-containing surfactant, nonionogenic tenside, cats product, anion surfactant, amphoterics a bit according to the different substrate materials kind, the tensio-active agent working concentration is between 0.1～10,000ppm, tensio-active agent can directly be dissolved in the water, again with neutral water based nano-titanium dioxide (TiO
2) colloidal sol evenly mixes and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029701 CN1931951A (en) | 2005-09-15 | 2005-09-15 | Antistatic insulating base material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029701 CN1931951A (en) | 2005-09-15 | 2005-09-15 | Antistatic insulating base material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1931951A true CN1931951A (en) | 2007-03-21 |
Family
ID=37877984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510029701 Pending CN1931951A (en) | 2005-09-15 | 2005-09-15 | Antistatic insulating base material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1931951A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014702A (en) * | 2016-06-30 | 2016-10-12 | 东莞市绿能宝汽车用品科技有限公司 | Hydrogen-oxygen gas generator used for vehicles |
| CN109321037A (en) * | 2017-07-31 | 2019-02-12 | 精工爱普生株式会社 | Ink-jet cloth printing ink and ink-jet cloth printing ink group |
-
2005
- 2005-09-15 CN CN 200510029701 patent/CN1931951A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014702A (en) * | 2016-06-30 | 2016-10-12 | 东莞市绿能宝汽车用品科技有限公司 | Hydrogen-oxygen gas generator used for vehicles |
| CN109321037A (en) * | 2017-07-31 | 2019-02-12 | 精工爱普生株式会社 | Ink-jet cloth printing ink and ink-jet cloth printing ink group |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070321 |