A kind of interactive graphic teaching aid based on electrically conductive inkTechnical field
The invention provides a kind of interactive graphic teaching aid based on electrically conductive ink, belong to children's early education articles for use technology neckDomain.
Background technology
At present, the positive every field infiltration of microelectric technique, conductive rendering technique arises at the historic moment as a kind of new and high technology.Electrically conductive ink can be plotted in PET film by such as film switch circuit version, then by printed film and decorative art facePlate is formed by combining；Have the advantages that simple in construction, good appearance, environment resistant excellent, service life are long, be widely used in electricitySub- toy, teaching aid, measurement apparatus and Medical Instruments etc..Ink protracting circuit plate technique is simple, efficiency high, but also saves metalCopper, is to reduce an effective way of microelectronic product cost, and other, which also have, is used in contact-sensing panel, draws flat fineCable, low-cost solar battery, liquid crystal display electric current and infra-red detection sensing element etc., in microelectronicUsing being diversified.The conventional fabrication method of the said goods is with conductive charcoal slurry or silver paste, only two kinds of black or whiteDull admittance, by the way of half tone is drawn；Mode drawn due to half tone yielded poorly, cost it is high, can not produce in enormous quantities.WithThe development of modern science and technology, market needs colorful electrically conductive ink, and water-soluble conducting ink can by the way of various draftings,Production efficiency can be greatly improved, it will by the most attention of people, because its high conductivity flexibly can should with low conductivityWith improving the flexibility of design, it is adaptable to various new electronic equipment.From RFID tag to " intelligent clothing ", unique chemistrySystem maintains the low conductivity under extraneous stress, and wide in range condition of cure and high flexibility has supported many inexpensive pedestalsApplication.
At present in children's early education field, with the raising of people's quality of the life, people increasingly focus on the religion to childEducate, but the father and mother for being busy with work usually not more times play to be told a story for child, teach child to sing.At this time oneThe figure that the interactive meeting of kind is told a story can undoubtedly cause the interest of child.If can be by water-soluble conducting ink and children's early educationApparatus is combined, then can solve the problem that above technical barrier.
The content of the invention
The invention provides a kind of interactive graphic teaching aid based on electrically conductive ink, the problems of the prior art are solved,The teaching aid structure is simple, novel, and figure can be combined with each other with audio file, transfers children's study, enjoyment of starting,And save the time of parent.
Realize technical scheme that above-mentioned purpose of the present invention used for：
A kind of interactive graphic teaching aid based on electrically conductive ink, at least including the figure being drawn on wall or on bottom plate,The interactive graphic teaching aid includes figure, controller, loudspeaker, storage card and USB line, wherein described figure is useThe continuous figure of electrically conductive ink printing/drafting, the two ends of figure pass through the electrically conductive ink lines of extension and controller twoMetal electrode is connected；Storage card slot is provided with described controller, storage card is installed in storage card slot, storage cardMiddle storage has audio file；Described loudspeaker is connected with controller, and controller can read the audio file in storage cardAnd played out by loudspeaker；USB interface is provided with described controller, USB line is connected on USB interface and to controlDevice provides power supply；Switch is provided with controller, when the switch is opened, uses the electrically conductive ink in human body touch figure, figure to produceRaw capacitance variations, controller is sensed after capacitance variations, is read the audio file in storage card and is played out by loudspeaker.
Described figure surrounding is provided with ornamental colored card, paper, and the colored card, paper simultaneously pass through adhesive tapeIt is fixed.
Described figure is the figure that system is stenciled using transparent hollow out plastic formwork and ink.
Described electrically conductive ink is water-soluble conducting ink, and the raw material of the water-soluble conducting ink is composed of the following components, each groupPoint and each component shared by mass percent be：Deionized water 30~38%, water-based acrylic resin 15~20%, propane diolsMethyl ether 6~10%, CNT 10~16%, conductive carbon black 5~9%, ethanol 20~30%, sodium p-octadecyl toluene sulfonate 1~3%, triethanolamine 2~5%, dispersant 0.5~1.5%, wax powder 0.5~1%.
Described water-soluble conducting ink is prepared using following methods：(1) each raw material, is weighed by above-mentioned percentage, will first be goneIn ionized water, sodium p-octadecyl toluene sulfonate, CNT input agitator, stir 30~60 minutes；
(2) and then again by water-based acrylic resin, propylene glycol monomethyl ether, conductive carbon black, ethanol, triethanolamine, dispersant andIn wax powder input agitator, stir 30~60 minutes, then products therefrom is ground 5~10 times with sand mill, that is, is made describedWater-soluble conducting ink.
Described electrically conductive ink can also be colored resistive ink, and the raw material of the colored resistive ink is by following components groupInto the mass percent shared by each component and each component is：Propylene glycol monomethyl ether 30~38%, polyvinyl butyral resin 15~20%th, polyaniline 6~10%, stannous chloride 10~16%, premetallized dye 5~9%, ethanol 20~30%, surface-activeAgent 1~3%, erucyl amide 2~5%, antistatic additive 0.5~1.5%, wax powder 0.5~1%.
Described colored resistive ink is prepared using following methods：(1) each raw material, is weighed by above-mentioned percentage, first by thirdMixed in glycol methyl ether, polyvinyl butyral resin input agitator, then add polyaniline, be made conductive after mixing and linkMaterial；
(2) and then again by stannous chloride, premetallized dye, ethanol, surfactant, erucyl amide, antistatic additive withAnd mixed in wax powder input agitator, after finally products therefrom is ground with sand mill, that is, the colored resistive ink is made.
The interactive graphic teaching aid based on electrically conductive ink that the present invention is provided has the advantage that：1st, the teaching aid structure is simple,Compared to the existing graphic teaching aid for being capable of sounding, it prepares with low cost, and can change corresponding audio text as neededPart.2nd, children's teaching aid can participate when in use, when children touch figure with hand, the electrically conductive ink production in figureRaw capacitance variations, controller is sensed after capacitance variations, is read the audio file in storage card and is played out by loudspeaker,So as to save the time of parent.The surrounding of figure can be decorated using colored card, paper, to transfer starting for childrenEnjoyment.
Embodiment
Detailed specific description is done to the present invention with reference to specific embodiment, but protection scope of the present invention not officeIt is limited to following examples.
Embodiment 1
Interactive graphic teaching aid provided in the present embodiment includes figure, controller, loudspeaker, storage card and USBLine, wherein described figure is the continuous figure using electrically conductive ink printing/drafting, in the present embodiment, described figureTo stencil the figure of system using transparent hollow out plastic formwork and ink.Specifically preparation method is：First, it will be die cut with adhesive tapeThe transparent plastic template of figure is fixed on wall.Using brush, hollow part carries out point brush in template, by novel conductive ink brushTo obtain the hollow out figure in template on to wall, brush is put repeatedly and obtains a thick layer ink layer, waits it to be completely dried.EnsureLower template is unloaded after ink setting, the figure being printed as by electrically conductive ink is left on the wall.In the present embodiment, described figure is stupidPublic affairs move the continuous lines figure on mountain.Described figure surrounding is provided with ornamental colored card, paper, the colored card, paperOpen and fixed by adhesive tape.Card, paper such as can set the clothing of high mountain and personage are decorated.
The two ends of figure are connected by the electrically conductive ink lines of extension with two metal electrodes of controller；Described controlStorage card slot is provided with device processed, storage card is installed in storage card slot, storage has the story that like the Foolish Old Man who removed the mountains in storage cardAudio file；Described loudspeaker is connected with controller, and controller can read the audio file in storage card and by raisingSound device is played out；USB interface is provided with described controller, USB line is connected on USB interface and provides electricity to controllerSource；Switch is provided with controller, when the switch is opened, uses the electrically conductive ink in human body touch figure, figure to produce electric capacity and becomesChange, controller is sensed after capacitance variations, read the audio file in storage card and played out by loudspeaker.
Electrically conductive ink described in the present embodiment is water-soluble conducting ink, and water-soluble conducting ink is made using following methods：(1), by deionized water 31%, water-based acrylic resin 16%, propylene glycol monomethyl ether 8%, CNT 12%, conductive carbon black 7%,Ethanol 20%, sodium p-octadecyl toluene sulfonate 2%, triethanolamine 3%, dispersant 0.5%, the mass percent of wax powder 0.5%Each raw material is weighed, first deionized water, sodium p-octadecyl toluene sulfonate, CNT are put into agitator, stirred 45 minutes；
(2) and then again by water-based acrylic resin, propylene glycol monomethyl ether, conductive carbon black, ethanol, triethanolamine, dispersant andIn wax powder input agitator, stir 50 minutes, then grind products therefrom with sand mill 8 times, that is, the waterborne conductive oil is madeInk.
Water-soluble conducting ink properties testing result obtained by the present embodiment is as follows：
| Project | Technical indicator | Examination criteria |
| Viscosity (applies -4 glasss) | ＞ 50 seconds | GB/T1723-1993 |
| Fineness | 8~15 μm | GB/T1724-1989 |
| Hardness | ≥2H | GB/T6739-1996 |
| Attachment fastness | >=95% | GB/T13217.7-1991 |
| Drying time | ≤5 | Min |
| Volume conduction (Ω .cm) | ≤1×10-2 | (ink film is thick 6 μm) |
Embodiment 2
Interactive graphic teaching aid provided in the present embodiment includes figure, controller, loudspeaker, storage card and USBLine, wherein described figure is the continuous figure using electrically conductive ink printing/drafting, in the present embodiment, described figureTo stencil the figure of system using transparent hollow out plastic formwork and ink.Specifically preparation method is：First, it will be die cut with adhesive tapeThe transparent plastic template of figure is fixed on wall.Using brush, hollow part carries out point brush in template, by novel conductive ink brushTo obtain the hollow out figure in template on to wall, brush is put repeatedly and obtains a thick layer ink layer, waits it to be completely dried.EnsureLower template is unloaded after ink setting, the figure being printed as by electrically conductive ink is left on the wall.In the present embodiment, described figure isThe continuous lines figure of " Lei Feng ".Described " Lei Feng " figure surrounding is provided with ornamental colored card, paper, the color chartPiece, paper are simultaneously fixed by adhesive tape.Card, the paper of profile such as can use Red Star cap and tommy gun are decorated.
The two ends of figure are connected by the electrically conductive ink lines of extension with two metal electrodes of controller；Described controlStorage card slot is provided with device processed, storage card is installed in storage card slot, there be storage in storage card《Learn the good list of Lei FengSample》Music file；Described loudspeaker is connected with controller, and controller can read the audio file in storage card and lead toLoudspeaker is crossed to play out；USB interface is provided with described controller, USB line is connected on USB interface and carried to controllerPower supply source；Switch is provided with controller, when the switch is opened, uses the electrically conductive ink in human body touch figure, figure to produce electricityHold change, controller is sensed after capacitance variations, read the audio file in storage card and song is played out by loudspeaker.
Electrically conductive ink described in the present embodiment is colored resistive ink, and the colored resistive ink uses following methods system：(1), by formula measure 32% propylene glycol monomethyl ether, 15% polyvinyl butyral resin, 8% polyaniline, 12% chlorinationCuprous, 6% orchil, 22% ethanol, 1% surfactant, 3% erucyl amide, 0.5% antistatic additive and0.5% wax powder, propylene glycol monomethyl ether, polyvinyl butyral resin are first put into agitator and mixed, then add polyaniline, mixConduction link stuff is made after conjunction；
(2) and then again by stannous chloride, orchil, ethanol, surfactant, erucyl amide, antistatic additive and waxMixed in powder input agitator, after finally products therefrom is ground with sand mill, that is, the colored resistive ink is made.
Colored resistive ink properties testing result obtained by the present embodiment is as follows：