CN85103291A - The conductive materials that can peel off - Google Patents
The conductive materials that can peel off Download PDFInfo
- Publication number
- CN85103291A CN85103291A CN198585103291A CN85103291A CN85103291A CN 85103291 A CN85103291 A CN 85103291A CN 198585103291 A CN198585103291 A CN 198585103291A CN 85103291 A CN85103291 A CN 85103291A CN 85103291 A CN85103291 A CN 85103291A
- Authority
- CN
- China
- Prior art keywords
- conductor
- substrate
- paraffin wax
- composition
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The present invention relates to a kind of composition, can be used as provisional conductor or resistance, they can screen printing go on certain part of appointment in the circuit and when needs, can peel off and remove.Said composition comprises and is embedded in by vinylite, microcrystal paraffin wax, and the conduction or the semiconductive particles of the formed matrix of the mixture of solvent the inside.
Description
This invention is the composition about interim conductor of a kind of conduct or resistance, can screen printing on selected certain part, can also peel off if required in the circuit.This kind composition is by being embedded into into vinyl resin, and conduction in the matrix that paraffin wax and a kind of solvent are formed or semiconductive particulate are formed.Concerning conductor composition, contain silver-colored particulate in right amount in the composition, concerning resistance composition, then contain an amount of carbon particulate in the composition.
According to the present invention, conductor or resistance composition top said constituent through chemical combination and homogenizing and form.Formed like this product is called coating.This coating promptly can be used as the diaphragm such as a certain circuit substrate, then with diaphragm heat treatment in addition.
According to a kind of embodiment of the present invention, can in a certain circuit, add interim conductor.For example, in order to protect electronic installation, can be at the provisional short dot of key local insertion of circuit.
By another kind of embodiment the of the present invention is that provisional resistive coating can be used as insulating material and shields certain electronic installation.For example, when a certain device was tested, a kind of provisional resistive coating can be used for sensitive part.
Be subjected under the situation of electromagnetic interference when electronic installation is being tested, used a kind of technology of past is the device that the metal cap protection with a kind of special construction experimentizes.
Existing resistance composition of the present invention can provide the effect of the method for comparatively saving and the having more flexibility electronic installation to play protection and testing.Resistance composition of the present invention can be with simple operation such as screen printing, brushing, or mode such as immersion is coated on the claimed position as coating.This protective coating is the position that maskable is coated with coating.
Another imbody of the present invention relates to conductor composition, the method that its has proposed to the improvement that a kind of provisional conductor is provided in a certain circuit.Technology before this is the provisional wire jumper of welding or uses shorting clip that this is not only to bother but also insecure.The provisional conductor of now being invented can print on the wiring board with stencil printing very easily, and is peelable again when not required.
The process aspect that is applied in of electrically-conducting paint is heard of.For example, the U.S. is presented to people's such as Morgan No.4,406,826 patents, discuss a kind of conductive composition, it is embedded into into by the two kinds of rare class unsaturation of different second monomers, oligomer by the particulate of conduction, or it is formed in the resin that combines of prepolymer and a kind of poly-thiol compound and thermal initiator.This composition can carry out screen printing and do heat treatment.But the formed a kind of Tu Ceng And of said composition is not provisional, in case after coating is imprinted on the substrate, just can not peel off, is actually and is mixed with stripper-resistance.
The U.S. is presented to the No.2 of Sweeney, and the conducting wire composition that 959,498 patents are discussed condenses in the resin electrolyte, and the composition of its conductivity is by being divided into very tiny silver and thermoplastic resin and a kind of solvent forms.Resin can be normal-butyl or isobutyl group methacrylate fat, polyvinyl acetate, or polyvinyl chloride.Yet this mixture be can not peel off or easy-clear not.Opposite it be to make it firmly for good and all attached on the pedestal of resin electrolyte, a kind of thermosetting undercoating on the electrolyte pedestal is to do heat treatedly simultaneously with the diaphragm that conduct electricity, purpose is attached on the substrate with mainly being to make its irreversibility.
The U.S. is presented to people's such as Bolon No.Re.31, and 411 patents are talked about and can be handled and become the coating of conductive coating through radioactive ray.This coating contains a kind of resin and a kind of conductive filler such as silver and copper particulate that radiativity is handled of doing, and people such as Bolon also talk about a spot of paraffin wax and can be included in the resin with the inhibition of minimizing oxygen, and this kind inhibition shows on the surface viscosity.But after containing paraffin wax, conductive coating is not all touched upon in any effect aspect the fissility.
With different by the conductive coating paint of the technology gained in above said past, the composition that can carry out screen printing among the present invention now can form a kind of diaphragm, two kinds of performances that combine conductivity and semiconduction and can peel off.
One of purpose of the present invention is to be to produce a kind of conductive coating paint, and it can not only carry out screen printing, and can form a kind of diaphragm that can peel off, thereby also can easily it be disposed after using on a kind of substrate.
Another object of the present invention is the coating that is to provide for diaphragm a kind of conductivity, and this diaphragm can provide provisional short dot on the key position of circuit, and does not need to weld temporary jumper or use mechanical clamp.
Of the present invention one further purpose be to provide a kind of heat treated thick film conductor of doing, it can provide enough adhesive force in provisional capacitor, do not dispose but do not need can peel off easily with abrasive or special solvent.
Of the present invention another further purpose be to provide a strippable thick film sheet conductor, after it is peeled off from substrate, on substrate, stay be the cleaning not affected surface.
Of the present invention another further purpose be to provide when an electronic installation is experimentized, protect its saving that is not subjected to electromagnetic interference and many-sided method that is suitable for.
The invention relates to a kind of composition that can carry out the diaphragm that is used for conductivity or semiconduction of screen printing, it can be from making Re Li And and can peeling off.This composition comprises conduction or semiconductive particles, vinylite, paraffin wax and solvent.Electrically conductive particles in the conductive composition can be particulate, spherical, foamed, powdery, fibrous, sheet or above various mixture.Best material is the silver of sheet.Other available material is yellow gold, silver, platinum and nickel.
The used electrically conductive particles of this invention can have different sizes by the shape separately of particulate.The suitable size of particulate is between 0.1 to 50 micron.The average length that is suitable for the silver strip of electrically conductive composition is about 2 microns.
The more suitable weight of electrically conductive particles reaches 60% approximately.Preferable weight is 20% to 50% scope, and best weight is about 35% to 45%.
When the preparation resistance composition, use carbon particulate more suitable, carbon particulate can be carbon black or graphite, the size of particulate is good with 0.1 to 10 micron.
Carbon particulate will suitably add in the resistance composition, and consumption can reach 20%, uses for preferable effect suggestion to be about 2% to 8% scope, preferably adopts to be about 5% weight.
The heat treated resin of doing of composition is intended for the conduction and the basis of semiconductive particles, employing vinylite.The thick film sheet coating of doing with these resins shows good pliability and wear resistence.A kind of suitable vinylite that can buy on market is Borden vinyl VC 410M, is that Borden chemistry branch company makes, and it is a department of Borden company.Can reach desirable intensity and flexible other vinylite all can use.The conduction with ohmic composition in, adoptable resin is the homopolymers of polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyvinyl alcohol and polyvinyl acetate.The polyvinyl copolymer of polyvinyl chloride and polyvinyl acetate or polyvinylidene chloride also can use.The vinylite of touching upon in the front can be used for and oligomeric being used in combination with prepolymerized compound of common monomer that can copolymerization.Resemble this vinyl and other monomer mixture and can be used for controlling the heat treated speed of viscosity, and resemble hardness and the various parameters of pliability.
Vinyl shared weight in composition should be about 5% to 20%, and preferably the weight with vinylite is decided to be 10%.
Used solvent gamma fourth lactones preferably in this invention.Other solvent that relatively is fit to comprise following several but be not limited to following various, as ketone in methyl n-pro-pyl ketone, methyl isopropyl Ketone and the acetyl.In the last composition of the adding that solvent is suitable, weight accounts for 20% to 60%.Preferably account for 40%.
The effect of paraffin wax is to make said composition to have fissility.Employed paraffin wax can be chosen from various synthetic and natural type among the present invention.For example, spermaceti fat, cured fat, melissa fat all are suitable for.The NO.1972 Ross paraffin wax of being made by Frank B.Ross Co., Ltd that can buy in market also can be used in the said composition.
The content of paraffin wax in composition is weight very to the use that conforms with purpose of the present invention, and the fissility that expect the expection of diaphragm just needs the paraffin wax of some.Paraffin wax is taken as and is a kind of agent for releasing, and it can make easy to do the removing of diaphragm energy.But have been found that too many paraffin wax will play opposite effect to the adhesion strength of diaphragm, can not be enough to the substrate of protective finish to cause diaphragm.
Suitable adding paraffin wax, its weight accounts for 2% to 6%.Better consumption is about 4%.The ratio of resin and paraffin wax preferably is about 2.5: 1 to 3.5: 1 from being about 4: 1 to being about 2: 1, is more preferably to be about 3: 1.
Another aspect of the present invention is to comprise adding some fluorescent pigments, it can make thick film sheet conductor or resistance under ultraviolet light as seen, containing a kind of like this pigment can be before diaphragm be removed and can both carry out O﹠E to the coated areas of substrate and circuit etc. afterwards.The inspection of being done after peeling off can guarantee the full scale clearance of on-chip diaphragm.And the inspection before peeling off can guarantee nude point of not coating on the substrate or the spot point that should not occur.When this invention is used for electronic installation to the ambient light sensitivity, use the fluorescent pigment suitable especially.
The fluorescent pigment is daylight white heat Z-141MP(Dayglow Z-141MP preferably), it is the manufacturing of the colored company (Day-Glo Color Corp.) of daylight white heat.This pigment can be suitable the weight of usefulness 0.1% to 1.0% add in the composition, be preferably 0.1% weight.
Composition of the present invention can be selected conventional additive for use.For example antioxidant, retardant, filler, antistatic agent, intensifier, viscosity modifier, plasticizer and adhesive etc.These additives can use suitably effectively deal.These every people that are proficient in this technology know.
Composition of the present invention can be prepared and use by the following method.The solvent of organic resin and paraffin wax mix under high-speed stirred, add conduction or semiconductive particulate again.In order to make it even fully, mixture will pass through three roller press.
This composition screen printing immerses or the method for brushing is coated on the substrate.Heat treatment is to heat 5 minutes when being heated to about 150 ℃.The heat treated cycle can be about 2 to 180 minutes, and temperature is about between 125 ℃ to 165 ℃, and this is so that composition obtains heat treatment completely and makes it to become solid.
Below can be used as demonstration for example, Dan Shi And is not the limitation to invention.Unless add explanation in addition, all percentages when umber all refer to weight.
The example I:
Material below in a Hobart N-50 type blender, mixing: 40% gal sign indicating number Ding Neila, 12.8%Borden vinyl VC-410M, 4.3%Ross NO.1972 paraffin wax and 42.9% silver medal fragment.Mixture is put into three roller press again and is made it further evenly, and this mixture or composition screen printing are gone to substrate.Then the diaphragm that is printed as is heat-treated about 5 minutes being about under 150 ℃, such diaphragm that draws has the electric conductivity of 0.1ohm/sq.This diaphragm is easy to divest.
The example II
Contain 54 parts of gamma fourth lactones with a kind of, 27 parts of Borden vinyl VC 401M, the mixture of 9 parts of Ross 1972 paraffin waxes and 10 parts of graphite particulates mixes in Hobart N-50 blender, puts into three roller press again and makes it even.This composition screen printing to substrate, and then is done 5 minutes heat treatments down 150 ℃ of temperature.The diaphragm that is printed as has the electrical conductivity of 500Kohm/sq.Diaphragm just can peel off after 24 hours easily.
The present invention's reference embodiment preferably is described.Can recognize that as those skilled in the art any modification, change and replacement all fall within the scope of the invention.Therefore, suitable way is that appended claim is carried out explanation broad sense and that meet spirit and scope of the invention.
Claims (23)
1, a kind of composition that is suitable on substrate, forming electric conductor, said conductor has required conductivity and can peel off and remove from said substrate, said composition contains vinylite, paraffin wax and at least a selecting for use, the conduction and the semiconductive particles of the required conductivity of this conductor can be provided, and the selection of the ratio of vinylite and paraffin wax should be able to make this conductor remove by peeling off from substrate.
2, according to claim 1 described composition, the ratio of therein ethylene base resin and paraffin wax is between 2: 1 to 4: 1.
3, according to claim 1 described composition, the ratio of therein ethylene base resin and paraffin wax is between 2.5: 1 to 3.5: 1.
4, according to claim 1 described composition, therein ethylene base resin is selected from the copolymer of the copolymer of polyvinyl chloride, polyvinyl chloride and polyvinyl acetate and polyvinyl chloride and polyvinylidene chloride.
5, according to claim 1 described composition, wherein electrically conductive particles is selected from yellow gold, silver, platinum, nickel particles.
6, according to claim 1 described composition, wherein semiconductive particles comprises carbon granules.
7, according to claim 1 described composition, wherein also comprise the fluorescent pigment.
8, preparation is a kind of has a required electric conductivity, and can be by peeling off the method for the electric conductor of removing from substrate, and this method comprises the following steps:
(a) with vinylite, solvent, paraffin wax, to mix mutually with semiconductive particles with at least a conduction of the desired conductivity of this conductor that can provide, the ratio of vinylite and paraffin wax is wanted said conductor is removed with stripping means from substrate.
(b) mixture with step (a) preparation is added on the substrate, forms film on substrate.
(c) at high temperature said film is heat-treated, solidify until this diaphragm, form said conductor, this conductor can be removed from substrate in the mode of peeling off.
9, according to claim 8 described methods, mixture wherein contained said vinylite, the said solvent of about 20%～60% weight and the said paraffin wax of about 2～6% weight of 5～20% weight of having an appointment before handling.
10, according to the method for claim 9, mixture wherein contained the said semiconductive particles of 20～60% weight of having an appointment before handling.
11, according to the method for claim 9, mixture wherein contained weight approximately before handling be 2～20% said semiconductive particles.
12, according to the method for claim 8, the ratio of therein ethylene base resin and paraffin wax is between 2: 1 to 4: 1.
13, according to the method for claim 8, therein ethylene base resin is selected from the copolymer of the copolymer of polyvinyl chloride, polyvinyl chloride and polyvinyl acetate and polyvinyl chloride and polyvinylidene chloride.
14, according to the method for claim 8, wherein conducting particles is selected from yellow gold, silver, platinum and nickel particles.
15, according to the method for claim 8, wherein semiconductive particles comprises carbon granules.
16, according to the method for claim 11, wherein also comprise the fluorescent pigment.
17, the goods that contain substrate, this substrate has the electric conductor with required conductivity, it is the matrix that at least a electrically conductive particles and semiconductive particles are formed that said conductor contains by vinylite, paraffin wax, and these particulates of selection are wanted to provide the conductor of settling in the matrix to have required conductivity.The selection of the ratio of vinylite and paraffin wax is wanted conductor is removed by peeling off from substrate.
18, according to the goods of claim 17, the ratio of therein ethylene base resin and paraffin wax is between 2: 1 to 4: 1.
19, according to the goods of claim 17, therein ethylene base resin is selected in the copolymer of the copolymer of polyvinyl chloride and polyvinyl acetate and polyvinyl chloride and polyvinylidene chloride from polyvinyl chloride.
20, according to the goods of claim 17, wherein electrically conductive particles is selected from gold, silver, platinum, nickel particles.
21, according to the goods of claim 17, wherein semiconductive particles comprises carbon granules.
22, according to the goods of claim 17, wherein also comprise the fluorescent pigment.
23, a kind of composition that is suitable on substrate, forming electric conductor, this conductor has required conductivity, and can from said substrate, remove by peeling off, said composition contains vinylite and paraffin wax, its ratio is 2: 1 to 4: 1, also contains at least a electrically conductive particles and the semiconductive particles that the required conductivity of this conductor is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585103291A CN85103291A (en) | 1985-04-30 | 1985-04-30 | The conductive materials that can peel off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585103291A CN85103291A (en) | 1985-04-30 | 1985-04-30 | The conductive materials that can peel off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85103291A true CN85103291A (en) | 1986-10-29 |
Family
ID=4793085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198585103291A Pending CN85103291A (en) | 1985-04-30 | 1985-04-30 | The conductive materials that can peel off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85103291A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099218B (en) * | 2005-02-22 | 2011-01-19 | 第一毛织株式会社 | Polymer particles and conductive particles having enhanced conducting properties and an anisotropic conductive packaging materials containing the same |
-
1985
- 1985-04-30 CN CN198585103291A patent/CN85103291A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101099218B (en) * | 2005-02-22 | 2011-01-19 | 第一毛织株式会社 | Polymer particles and conductive particles having enhanced conducting properties and an anisotropic conductive packaging materials containing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4595604A (en) | Conductive compositions that are directly solderable and flexible and that can be bonded directly to substrates | |
| JP3459012B2 (en) | Surface mount conductive adhesive | |
| US4595606A (en) | Solderable conductive compositions having high adhesive strength | |
| US5045141A (en) | Method of making solderable printed circuits formed without plating | |
| US4595605A (en) | Solderable conductive compositions that are capable of being soldered by non silver-bearing solder and that can be bonded directly to substrates and which are flexible | |
| US5084211A (en) | Anisotropically electroconductive adhesive | |
| US3146125A (en) | Method of making printed circuits | |
| DE2542737A1 (en) | RADIATION STABLE INKS | |
| JP2974256B2 (en) | Highly conductive polymer thick film composition | |
| DE69825111T2 (en) | Static energy-dissipating labels | |
| JPH04503831A (en) | conductive pressure sensitive adhesive | |
| KR900000458B1 (en) | Fast curing solderable conductor | |
| CN1173371C (en) | Conductive formation and electronic equipment using such conductive formation | |
| CN85103291A (en) | The conductive materials that can peel off | |
| JPS60231753A (en) | Composition for forming electroconductor on substrate and manufacture of electroconductor | |
| CN85103290A (en) | Strippable solder mask | |
| JPH1166956A (en) | Conductive paste | |
| JP2952769B1 (en) | Heat-resistant film with excellent dimensional stability and method for producing the same | |
| JPH0236149B2 (en) | ||
| JP2003068139A (en) | Conductive paste | |
| JPS6242499A (en) | Transparent conducting film | |
| JPH08148035A (en) | Conductive material and conductive paste using this conductive material | |
| JPS57141465A (en) | Electrically conductive, corrosion-proof paint composition | |
| JPH08138437A (en) | Conductive material and conductive paste using it | |
| JPH03504060A (en) | electrically conductive structures |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |