JPH0477575A - Coating for forming piezoelectric buzzer and its electrode - Google Patents
Coating for forming piezoelectric buzzer and its electrodeInfo
- Publication number
- JPH0477575A JPH0477575A JP2186279A JP18627990A JPH0477575A JP H0477575 A JPH0477575 A JP H0477575A JP 2186279 A JP2186279 A JP 2186279A JP 18627990 A JP18627990 A JP 18627990A JP H0477575 A JPH0477575 A JP H0477575A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- electrode
- silver powder
- phenolic resin
- type phenolic
- 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
- 238000000576 coating method Methods 0.000 title abstract description 8
- 239000011248 coating agent Substances 0.000 title abstract description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000011134 resol-type phenolic resin Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- 238000002834 transmittance Methods 0.000 claims abstract description 7
- 150000004671 saturated fatty acids Chemical class 0.000 claims abstract description 6
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims abstract description 6
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims abstract description 6
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 5
- -1 methylol group Chemical group 0.000 claims abstract description 4
- 238000004566 IR spectroscopy Methods 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 238000006467 substitution reaction Methods 0.000 claims description 7
- 239000003973 paint Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000005476 soldering Methods 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 description 13
- 239000004332 silver Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 235000003441 saturated fatty acids Nutrition 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- VKOBVWXKNCXXDE-UHFFFAOYSA-N icosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCC(O)=O VKOBVWXKNCXXDE-UHFFFAOYSA-N 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、圧電ブザー及びその電極を形成するための導
電性塗料に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a piezoelectric buzzer and a conductive paint for forming its electrodes.
圧電ブザーは、第１図に示すように、圧電振動子１の両
面に電極２を形成し、この電極２に、直接又は金属弾性
体３を介してリード線４を接続したものである。As shown in FIG. 1, the piezoelectric buzzer has electrodes 2 formed on both sides of a piezoelectric vibrator 1, and lead wires 4 connected to the electrodes 2 either directly or via a metal elastic body 3.
この圧電ブザーにおける前記電極２は、従来から銀ペー
ストが用いられ、第５図に示すように、印刷により、そ
の銀ペーストが圧電振動子１の両面に塗布されて電極２
が形成され、以後、同図に示すフローによっ、て乾燥・
焼付は等が行われて、圧電ブザーが製造される。Conventionally, silver paste has been used for the electrodes 2 in this piezoelectric buzzer, and as shown in FIG.
is formed, and then dried and dried according to the flow shown in the same figure.
Baking, etc. are performed to produce a piezoelectric buzzer.
上記圧電ブザーの圧電振動子１は、振動特性の面から極
力薄いことが望まれる。しかしながら、薄くすると従来
の乾燥・焼付は等による製造方法では、前記焼付け（約
８００″Ｃ）後、湿潤雰囲気で直流電圧が印加されると
電極２において銀マイグレーションが生しる恐れがあっ
て、圧電振動子１の薄膜化を図れない問題がある。The piezoelectric vibrator 1 of the piezoelectric buzzer is desired to be as thin as possible from the viewpoint of vibration characteristics. However, in the conventional manufacturing method using drying, baking, etc., when thinning the electrode 2, silver migration may occur in the electrode 2 if a DC voltage is applied in a humid atmosphere after the baking (approximately 800''C). There is a problem in that the piezoelectric vibrator 1 cannot be made thinner.
上記薄膜化を図る方法として、金属銀粉末と熱硬化性樹
脂から成る導電性ペーストの塗膜を加熱硬化させる方法
が知られているが、この場合は導電性が低下し、絶縁基
体上への塗膜の密着性が悪いという問題があった。A known method for thinning the film is heating and curing a conductive paste coating made of metal silver powder and a thermosetting resin, but in this case, the conductivity decreases and the coating on the insulating substrate is reduced. There was a problem that the adhesion of the coating film was poor.
又、この方法による圧電振動子のキャパシティ（Ｃａｐ
ａｃｉｔｙ、共振特性）は、前記乾燥・焼付けによる方
法の場合に比して低く、このため十分な音圧を得ること
ができないという問題もある。Moreover, the capacity (Cap) of the piezoelectric vibrator by this method is
acity (resonance characteristics) is lower than that in the drying/baking method, and therefore there is also the problem that sufficient sound pressure cannot be obtained.
そこでこの発明の課題は上記従来の銀ペーストの問題点
を解決するにあり、■良好な導電性を有する、■スクリ
ーン印刷、凹版印刷、が容易である、■絶縁基体上への
塗膜の密着性がよい、■細線回路が形成できる、■塗膜
上への半田付性と半田付強度がすぐれている、■半田コ
ートの導電回路の導電性が長期にわたって維持できる、
■電極キャパシティを向上させることができる銀ペース
トを提供するにある。Therefore, the object of this invention is to solve the above-mentioned problems of the conventional silver paste. ■ Has good conductivity. ■ Can be easily screen printed or intaglio printed. ■ Adhesiveness of the coating film to the insulating substrate. ■Can form thin wire circuits; ■Excellent solderability and soldering strength on coatings; ■Can maintain conductivity of the conductive circuit of the solder coat over a long period of time.
■Providing a silver paste that can improve electrode capacity.
上記課題を解決するための手段としてこの発明では、金
属銀粉Ａ８５〜９６重量％と、レゾール型フェノール樹
脂８１５〜４重量％と、その両者Ａ、 Ｂの合計１００
重量部に対して、飽和脂肪酸若しくは不飽和脂肪酸又は
それらの金属塩０．１〜８重量部と、黒鉛所要重量部と
から成り、前記レゾール型フェノール樹脂Ｂは、それが
有する２−１置換体、２．４−２Ｗ換体、２．４．６−
３置換体、メチール基、ジメチレンエーテル、フェニル
基の赤外分光法による赤外線透過率を１２．ｍ、ｎ、ａ
、ｂ、ｃとするとき、各透過率の間に
！
（イ）−＝ ０．８〜１．２
（ロ）−＝ ０．８〜１．２
（ハ）−＝ Ｏ，Ｓ〜１．２
（ニ） −＝ １．２〜１．５
なる関係が成り立つペーストから成る圧電ブザー電極形
成用塗料を採用したのである。As a means for solving the above problems, this invention includes 85 to 96% by weight of metal silver powder A, 815 to 4% by weight of resol type phenolic resin, and a total of 100% of both A and B.
The resol type phenolic resin B consists of 0.1 to 8 parts by weight of saturated fatty acids or unsaturated fatty acids or metal salts thereof, and the required parts by weight of graphite, based on the weight part, and the resol type phenolic resin B has a 2-1 substitution product that it has. , 2.4-2W conversion, 2.4.6-
The infrared transmittance of the trisubstituted product, methyl group, dimethylene ether, and phenyl group by infrared spectroscopy is 12. m, n, a
, b, c, between each transmittance! (a) −= 0.8 to 1.2 (b) −= 0.8 to 1.2 (c) −= O, S to 1.2 (d) −= 1.2 to 1.5 We adopted a piezoelectric buzzer electrode forming paint consisting of a paste that has the following properties.
上記銀ペーストに混入した黒鉛の重量部、粒径は、実験
等により適宜に決定すればよいが、例えば前記ペースト
のＡ、Ｂの合計１００重量部に対し０．５〜２０重量部
、好ましくは１〜１１１部とし、その粒径は、例えば０
．１〜１０ｍ好ましくは０．１−〜１μとする。The parts by weight and particle size of the graphite mixed in the silver paste may be appropriately determined through experiments, etc., but for example, 0.5 to 20 parts by weight, preferably 0.5 to 20 parts by weight, based on the total of 100 parts by weight of A and B in the paste. 1 to 111 parts, and the particle size is, for example, 0.
．． 1 to 10 m, preferably 0.1 to 1 μm.
また、前記銀ペーストの銀粉粒は０．１〜２０ａｍとし
たものとすることができ、好ましくはｌｆｍ以下とする
。Further, the silver powder grains of the silver paste may have a thickness of 0.1 to 20 am, preferably lfm or less.
そして、圧電振動子の両面に、前記ペーストからなる電
極を形成し、この電極に直接又は弾性体を介してリード
線を接続してなる圧電ブザーを構成したのである。Then, electrodes made of the paste were formed on both sides of the piezoelectric vibrator, and lead wires were connected to the electrodes either directly or via an elastic body to construct a piezoelectric buzzer.
上記のように構成したこの発明による銀ペーストは、金
属銀粉の配合量が８５重量％未満では、半田付性が悪く
なり、逆に９６重量％を趨えるときは、金属銀粉が十分
にバインドされず、得られる電極も脆くなり、所望の半
田付強度が得られず、導電性が低下すると共にスクリー
ン印刷性も悪くなる。In the silver paste according to the present invention configured as described above, if the amount of metal silver powder blended is less than 85% by weight, the solderability will be poor, and conversely, if the amount exceeds 96% by weight, the metal silver powder will not be sufficiently bound. Moreover, the resulting electrode also becomes brittle, making it impossible to obtain the desired soldering strength, resulting in decreased conductivity and poor screen printability.
好ましくは、樹脂との配合において８８重ｔ％以上、さ
らに好ましくは９０〜９３重量％とする。Preferably, it is 88% by weight or more, more preferably 90 to 93% by weight when blended with the resin.
使用するレゾール型フェノール樹脂について、その化学
量、２−１置換体量をλ、２．４−２Ｗ換体量をμ、２
．４．６−３Ｗ換体量をν、メチロール基量をα、ジメ
チレンエーテル量をβ、フェニル基量をＴとすると、前
記構成の
また、
β
が小さいと電極の半田付性が悪くな
小さいということになる。すなわち、２−１置換体量λ
、２．４−２置換体量μ、に比して、２．４．６−３置
換体量をνが多いということを意味する。Regarding the resol type phenolic resin used, its chemical amount, 2-1 substitution amount is λ, 2.4-2W substitution amount is μ, 2
．． 4.6-3W conversion amount is ν, methylol group amount is α, dimethylene ether amount is β, and phenyl group amount is T. Also in the above structure, if β is small, the solderability of the electrode is poor and small. It turns out. That is, the amount of 2-1 substitution product λ
, 2.4-2 substituent amount μ, means that 2.4.6-3 substituent amount ν is larger.
す、−が大きいと電極の導電性が悪くなる。If - is large, the conductivity of the electrode will be poor.
α
従って、得られる電極の硬さを適切にし、良好な導電性
と半田付性とを兼備するレゾール型フェノール樹脂とし
ては、前記構成に示す
なる。すなわち、ジメチレンエーテル量β、フェニル基
量Ｔに比して、メチロール基量αが多いということを意
味する。α Therefore, the resol-type phenolic resin that provides an appropriate hardness of the obtained electrode and has both good conductivity and solderability is as shown in the above structure. That is, it means that the amount α of methylol groups is larger than the amount β of dimethylene ether and the amount T of phenyl groups.
−ｉに２．４．６−３置換体量νが大きくなると、レゾ
ール型フェノール樹脂の架橋密度が太き電性は良くなる
。しかし、逆に電極が硬く、脆くなる傾向を示し、物理
的特性が悪くなる。When the amount ν of 2.4.6-3 substitution in -i increases, the crosslinking density of the resol type phenol resin increases and the electric property improves. However, on the contrary, the electrode tends to become hard and brittle, resulting in poor physical properties.
□が１．２〜１．５とするのが適している。It is suitable that □ is 1.2 to 1.5.
レゾール型フェノール樹脂の配合量は、４重量％未満で
は、金属銀粉が十分にバインドされず、得られる電極も
脆くなり、導電性が低下すると共にスクリーン印刷性が
悪くなる。逆に１５重量％を超えるときは、半田付性が
好ましいものとならない。If the amount of the resol type phenolic resin is less than 4% by weight, the metal silver powder will not be sufficiently bound, and the resulting electrode will become brittle, resulting in decreased conductivity and poor screen printability. On the other hand, if it exceeds 15% by weight, the solderability will not be favorable.
飽和脂肪酸若しくは不飽和脂肪酸又はそれら金属塩とは
、飽和脂肪酸にあっては、炭素数１６〜２０のパルチミ
ン酸、ステアリン酸、アラキン酸など、不飽和脂肪酸に
あっては炭素数１６〜１８のシーマリン酸、オレイン酸
、リルン酸などで、それらの金属塩にあってはカリウム
、銅、アルミニウム、ナトリウム、亜鉛などの金属との
塩である。Saturated fatty acids, unsaturated fatty acids, or metal salts thereof include saturated fatty acids such as palmitic acid, stearic acid, and arachidic acid having 16 to 20 carbon atoms, and unsaturated fatty acids such as seamarin having 16 to 18 carbon atoms. acids, oleic acid, lyric acid, etc., and their metal salts include salts with metals such as potassium, copper, aluminum, sodium, and zinc.
これらの分散剤の使用は、金属銀粉とレゾール型フェノ
ール樹脂との配合において、金属銀粉の樹脂中への微細
分散を促進し、導電性の良好な電極を形成するので好ま
しい。The use of these dispersants is preferable in blending the metal silver powder with the resol-type phenolic resin because it promotes fine dispersion of the metal silver powder into the resin and forms an electrode with good conductivity.
飽和脂肪酸若しくは不飽和脂肪酸又はそれらの金属塩の
配合量は、金属銀粉とレゾール型フェノール樹脂の合計
量１００重量部に対して０．１〜８重量部の範囲で用い
られ、好ましくは１〜３重量部である。The blending amount of saturated fatty acids, unsaturated fatty acids, or metal salts thereof is in the range of 0.1 to 8 parts by weight, preferably 1 to 3 parts by weight, based on 100 parts by weight of the total amount of metal silver powder and resol type phenolic resin. Parts by weight.
前記分散剤の配合量が、０．１重量部未満では、金属銀
粉の微細分散性が期待できず、逆に８重量部を超えると
きは、電極の導電性を低下させ、電極と圧電振動子との
密着性の低下をまねくので好ましくない。If the amount of the dispersant is less than 0.1 part by weight, fine dispersion of the metal silver powder cannot be expected, and if it exceeds 8 parts by weight, the conductivity of the electrode will be reduced and the electrode and piezoelectric vibrator may be damaged. This is not preferable because it leads to a decrease in adhesion with the material.
本発明に係る銀ペーストには、粘度調節をするために、
通常の有機溶剤を適宜使用することができる０例えば、
ブチルカルピトール、ブチルカルピトールアセテート、
ブチルセロソルブ、メチルイソブチルケトン、トルエン
、キシレンなどの公知の溶剤である。In order to adjust the viscosity, the silver paste according to the present invention includes:
Common organic solvents can be used as appropriate. For example,
Butyl carpitol, butyl carpitol acetate,
These are known solvents such as butyl cellosolve, methyl isobutyl ketone, toluene, and xylene.
表１に示す配合比でもって実施例は、銀粉径：５μ、黒
鉛粒径：０．７ｉ！ｍ銀粉に対する重量比：１％、２．
５％、５％の３種類をそれぞれ２０分間三輪ロールで混
練して銀ペーストを調整した。なお、レゾール型フェノ
ール樹脂は、その赤外線透過率比が、
ｎ ｎ
ａ＝１．３１のものを使用した。In the example with the compounding ratio shown in Table 1, silver powder diameter: 5μ, graphite particle diameter: 0.7i! Weight ratio to m silver powder: 1%, 2.
Silver pastes were prepared by kneading three types of silver pastes, 5% and 5%, for 20 minutes using a tricycle roll. In addition, the resol type phenolic resin has an infrared transmittance ratio of n n
The one with a=1.31 was used.
このように調整した実施例の銀ペーストを第２図に示す
ように、スクリーン印刷法により、圧電振動子１の疑似
基板両面に塗布して電極２を形成し、そのもののキヤパ
シイティを測定した。その実施例１の結果を第３図に示
す。As shown in FIG. 2, the silver paste of the example thus prepared was applied to both surfaces of the pseudo substrate of the piezoelectric vibrator 1 by screen printing to form electrodes 2, and the capacitance of the paste was measured. The results of Example 1 are shown in FIG.
この結果から、黒鉛の含有量が増せば、キャパシイティ
が大きくなることがわかる。This result shows that as the graphite content increases, the capacity increases.
なお、導電性、密着性、半田付性、半田付強度、印刷性
を検査したところ、全てにおいて満足いけるものであっ
た。In addition, conductivity, adhesion, solderability, soldering strength, and printability were tested and all were found to be satisfactory.
第４図には、金属銀粉（径、５＃ｍ）と黒鉛（径、０．
７Ｊ１１１）の配合割合を変化させた銀ペースト電極に
よる比抵抗の変化度合を示す、なお、この場合、金属銀
粉：樹脂は９２：８（重量％）であった。Figure 4 shows metallic silver powder (diameter, 5#m) and graphite (diameter, 0.5mm).
7J111) by changing the blending ratio of the silver paste electrode. In this case, the ratio of metal silver powder to resin was 92:8 (wt%).
本発明は、以上のよう番こ構成したので、導電性、スク
リーン印刷性、密着性、半田付性等の諸性能を良好に保
持した状態で従来の銀ペーストに近いキ中パシイティを
得ることができる。このため、音圧の低下を招くことが
なく、焼付けを必要としないため、製作性が向上し、か
つその焼付は後の湿潤雰囲気下におけるマイグレーショ
ンの恐れもないため、圧電振動子のＴＲ膜化を図り得る
。Since the present invention has the above-mentioned structure, it is possible to obtain a hardness close to that of conventional silver paste while maintaining good performance such as conductivity, screen printability, adhesion, and solderability. can. Therefore, since there is no reduction in sound pressure and no baking is required, manufacturing efficiency is improved, and there is no fear that baking will cause migration later in a humid atmosphere, so the piezoelectric vibrator can be made into a TR film. can be achieved.
第１図は、本発明に係る圧電ブザーの一例の概略図、第
２図は同側の製作説明図、第３図は黒鉛添加量とキャパ
シイティの関係図、第４図は黒鉛含有量と比抵抗の関係
図、第５図は従来例の製作説明図である。
１・・・・・・圧電振動子、 ２・・・・・・電極、３
・・・・・−金属弾性体、 ４・・・・・・リード線。
特許出願人 タツタ電線株式会社
同 代理人
鎌
田
文
第２図
第３図
第４図Fig. 1 is a schematic diagram of an example of a piezoelectric buzzer according to the present invention, Fig. 2 is a manufacturing explanatory diagram of the same side, Fig. 3 is a graph showing the relationship between the amount of graphite added and capacity, and Fig. 4 is a graph showing the relationship between graphite content and capacity. The relationship diagram of specific resistance, FIG. 5, is a manufacturing explanatory diagram of a conventional example. 1... Piezoelectric vibrator, 2... Electrode, 3
...-Metal elastic body, 4...Lead wire. Patent applicant Tatsuta Electric Cable Co., Ltd. Agent Aya Kamata Figure 2 Figure 3 Figure 4
Claims (3)
ノール樹脂Ｂ１５〜４重量％と、その両者Ａ、Ｂの合計
１００重量部に対して、飽和脂肪酸若しくは不飽和脂肪
酸又はそれらの金属塩０．１〜８重量部と、黒鉛所要重
量部とから成り、前記レゾール型フェノール樹脂Ｂは、
それが有する２−１置換体、２、４−２置換体、２、４
、６−３置換体、メチロール基、ジメチレンエーテル、
フェニル基の赤外分光法による赤外線透過率をｌ、ｍ、
ｎ、ａ、ｂ、ｃとするとき、各透過率の間に （イ）ｌ／ｎ＝０．８〜１．２ （ロ）ｍ／ｎ＝０．８〜１．２ （ハ）ｂ／ａ＝０．８〜１．２ （ニ）ｃ／ａ＝１．２〜１．５ なる関係が成り立つペーストから成る圧電ブザー電極形
成用塗料。(1) 85 to 96% by weight of metal silver powder A, 15 to 4% by weight of resol type phenolic resin B, and 0.00% of saturated fatty acid or unsaturated fatty acid or a metal salt thereof per 100 parts by weight of both A and B. The resol type phenolic resin B consists of 1 to 8 parts by weight and the required part by weight of graphite.
It has 2-1 substitutions, 2, 4-2 substitutions, 2, 4
, 6-3 substituted product, methylol group, dimethylene ether,
The infrared transmittance of phenyl group by infrared spectroscopy is l, m,
When n, a, b, and c, between each transmittance (a) l/n = 0.8 to 1.2 (b) m/n = 0.8 to 1.2 (c) b/ A paint for forming a piezoelectric buzzer electrode comprising a paste that satisfies the following relationship: a=0.8-1.2 (d) c/a=1.2-1.5.
粉Ａの粒径を０．１〜２０μｍとしたことを特徴とする
圧電ブザー電極形成用塗料。(2) A paint for forming a piezoelectric buzzer electrode according to claim (1), wherein the metal silver powder A has a particle size of 0.1 to 20 μm.
のいずれかのペーストから成る電極を形成し、この電極
に直接又は弾性体を介してリード線を接続して成る圧電
ブザー。(3) Claims (1) to (2) are applied to both sides of the piezoelectric vibrator.
A piezoelectric buzzer consisting of an electrode made of any of the pastes and a lead wire connected to the electrode either directly or through an elastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2186279A JPH0477575A (en) | 1990-07-13 | 1990-07-13 | Coating for forming piezoelectric buzzer and its electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2186279A JPH0477575A (en) | 1990-07-13 | 1990-07-13 | Coating for forming piezoelectric buzzer and its electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0477575A true JPH0477575A (en) | 1992-03-11 |
Family
ID=16185522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2186279A Pending JPH0477575A (en) | 1990-07-13 | 1990-07-13 | Coating for forming piezoelectric buzzer and its electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0477575A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202015000176U1 (en) | 2014-01-15 | 2015-02-09 | Makita Corporation | Portable working machine |
-
1990
- 1990-07-13 JP JP2186279A patent/JPH0477575A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202015000176U1 (en) | 2014-01-15 | 2015-02-09 | Makita Corporation | Portable working machine |
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