JPS6216061Y2 - - Google Patents
Info
- Publication number
- JPS6216061Y2 JPS6216061Y2 JP18248281U JP18248281U JPS6216061Y2 JP S6216061 Y2 JPS6216061 Y2 JP S6216061Y2 JP 18248281 U JP18248281 U JP 18248281U JP 18248281 U JP18248281 U JP 18248281U JP S6216061 Y2 JPS6216061 Y2 JP S6216061Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnesium
- film
- rust
- diaphragm
- synthetic resin
- 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.)
- Expired
Links
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 12
- 229920003002 synthetic resin Polymers 0.000 claims description 12
- 239000000057 synthetic resin Substances 0.000 claims description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 9
- 239000011777 magnesium Substances 0.000 claims description 9
- 239000004925 Acrylic resin Substances 0.000 claims description 8
- 229920000178 Acrylic resin Polymers 0.000 claims description 8
- 229910052749 magnesium Inorganic materials 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 5
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 125000005372 silanol group Chemical group 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 241000221535 Pucciniales Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000003545 alkoxy group Chemical group 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
- 125000003277 amino group Chemical group 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000012084 conversion product Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Description
【考案の詳細な説明】
本考案はマグネシウム又はマグネシウム合金か
らなる音響機器用振動板の耐蝕性を向上させたも
のである。[Detailed Description of the Invention] The present invention improves the corrosion resistance of a diaphragm for audio equipment made of magnesium or a magnesium alloy.
マグネシウム又はマグネシウム合金は比重が約
1.8と小さく、軽量で高能率な振動系を得ること
が出来る特長がある反面、化学的に非常に活性な
ために錆が発生しやすく、実用上の防錆が困難で
あつた。 Magnesium or magnesium alloy has a specific gravity of approximately
Although it has the advantage of being small in size (1.8 mm), making it possible to obtain a lightweight and highly efficient vibration system, on the other hand, it is highly chemically active and easily rusts, making practical rust prevention difficult.
一般にマグネシウム又はマグネシウム合金は空
気中の水分により、表面に水酸化物の生成が起
り、酸、塩分を含まないイオン交換水による加湿
により、43℃、95％RHで24時間後部分的に錆が
発生する。故に酸、塩分を含んだ水分に対しては
簡単に錆が発生する。 In general, magnesium or magnesium alloys generate hydroxide on the surface due to moisture in the air, and when humidified with ion-exchanged water that does not contain acids or salts, rust partially occurs after 24 hours at 43℃ and 95%RH. Occur. Therefore, rust easily occurs when exposed to moisture containing acids and salts.
故に表面処理を施さない限り実用にならない。 Therefore, it cannot be put into practical use unless surface treatment is applied.
一般的にはJISH8651によるマグネシウム合金
防蝕処理方法やMIL−Ｍ−3171C、Ｍ−45202な
どのようにクロム酸塩処理や陽極酸化処理などの
表面処理を施した上にさらに合成樹脂を塗布して
防錆を行うのが普通である。 In general, magnesium alloy corrosion protection treatment method according to JISH8651, MIL-M-3171C, M-45202, etc., is performed by applying surface treatment such as chromate treatment or anodizing treatment, and then applying a synthetic resin to prevent corrosion. It is common to rust.
クロム酸塩処理したものは酸、塩分を含まない
イオン交換水による加湿により、43℃、95％RH
で20日間異常なしであつたが、上水道による加湿
では、43℃、95％RHで72時間後部分的に錆が発
生した。 Chromate-treated products are humidified with ion-exchanged water that does not contain acids or salts at 43℃ and 95%RH.
There were no abnormalities for 20 days, but when humidified by water supply, rust appeared partially after 72 hours at 43°C and 95% RH.
クロム酸塩処理したその上にアクリル樹脂を約
16ミクロン塗布したものは酸、塩分を含まないイ
オン交換水による加湿により、43℃、95％RHで
20日間異常なしであつたが、上水道水による加湿
では、43℃、95％RHで96時間後数点で錆が発生
した。 Acrylic resin is applied on top of chromate treatment.
Items coated with 16 microns can be heated at 43℃ and 95%RH by humidifying with ion-exchanged water that does not contain acid or salt.
There were no abnormalities for 20 days, but when humidified with tap water, rust occurred at several points after 96 hours at 43°C and 95% RH.
以上のごとく、合成樹脂を塗布することによ
り、化成処理膜をスリ傷等の外力から保護すると
共に、振動板表面のクラツクの際間を充填塗装し
ていたが、合成樹脂が含水してその含水物に酸、
塩分があると振動板表面に錆を発生し、実用上充
分とは云えない欠点があつた。 As described above, by applying a synthetic resin, the chemical conversion film was protected from external forces such as scratches, and the cracks on the surface of the diaphragm were filled with paint, but the synthetic resin contained water and the water content acid on things,
The presence of salt causes rust to form on the surface of the diaphragm, which has the disadvantage that it cannot be said to be sufficient for practical use.
本考案は上記欠点を取除く為に考案されたもの
で、図面に示す実施例について説明すれば、第１
図に示すごとく、マグネシウム又はマグネシウム
合金からなる振動板１表面に化成処理又は電解処
理又は金属鍍金せる皮膜２を形成し、その表面に
ビニルトリエトキシシラン等シランカツプリング
剤３を介してアクリル樹脂等有機合成樹脂皮膜４
を形成したスピーカ用振動板である。 The present invention was devised to eliminate the above-mentioned drawbacks, and if the embodiment shown in the drawings is explained, the first
As shown in the figure, a film 2 that can be chemically treated, electrolytically treated, or plated with metal is formed on the surface of a diaphragm 1 made of magnesium or a magnesium alloy, and a film 2 of acrylic resin or the like is applied to the surface of the diaphragm 1 using a silane coupling agent 3 such as vinyltriethoxysilane. Organic synthetic resin film 4
This is a speaker diaphragm formed with a
本考案は上記のような構造になつているので、
マグネシウム又はマグネシウム合金の化成処理表
面に吸着している水分及び空気中の水分などが、
X3（CH2）Si3（Ｒ）＋H2O
＝X3（CH2）Si3（Ｈ）＋3RＨ
Ｘ：ビニール基、エポキシ基、アクリル基、アミ
ノ基等
Ｒ：メトキシ基、エトキシ基、シラノール基等
Ｃ：炭素 Ｈ：水素 Si：シリコン Ｏ：酸素
上式のごとく、シランカツプリング剤のアルコキ
シ基、シラノール基などとの加水分解、縮合によ
り、マグネシウム又はマグネシウム合金の化成処
理物の無機材料と結合し、残つた有機反応基が有
機合成樹脂と反応すると考えられる。 Since the present invention has the structure described above,
Moisture adsorbed on the chemical conversion treatment surface of magnesium or magnesium alloy and moisture in the air are X3 (CH 2 ) Si3 (R) + H2O = X3 (CH 2 ) Si3 (H) + 3RH , acrylic group, amino group, etc. R: methoxy group, ethoxy group, silanol group, etc. C: Carbon H: Hydrogen Si: Silicon O: Oxygen As shown in the above formula, hydrolysis of silane coupling agent with alkoxy group, silanol group, etc. It is thought that, by condensation, it is combined with the inorganic material of the chemical conversion product of magnesium or magnesium alloy, and the remaining organic reactive group reacts with the organic synthetic resin.
従来のように被化成処理物に直接有機合成樹脂
を塗布すると、被化成処理物の表面に吸着してい
る水分を含んだままになるので、錆の原因になる
が、シランカツプリング剤を介在することによ
り、その水分を反応に消費してしまうので、錆の
原因がなくなる。打疵などによる有機合成樹脂の
保護膜に破壊部が生じた場合、従来では化成処理
物と有機合成樹脂膜との界面にそつて水分が広が
り、水酸化物が生成されて錆が発生するが、本考
案ではシランカツプリング剤が介在しているの
で、水分の広がりがなく、水酸化物の生成がな
い。 If organic synthetic resin is applied directly to the object to be chemically converted as in the past, the surface of the object to be chemically treated retains moisture adsorbed, which causes rust. By doing so, the moisture is consumed in the reaction, eliminating the cause of rust. When a break occurs in the protective film of an organic synthetic resin due to scratches, etc., conventionally, moisture spreads along the interface between the chemical conversion treatment product and the organic synthetic resin film, producing hydroxide and causing rust. In the present invention, since a silane coupling agent is used, there is no spread of moisture and no generation of hydroxide.
本考案の介在するシランカツプリング剤は有機
合成樹脂との結合も強いので、全体的に密着力の
大きな保護皮膜が形成され、水分が有機合成樹脂
を通して進入しても、疎水性のシランカツプリン
グ剤が介在しているので被化成処理物表面への水
分の進入を防止する。 The intervening silane coupling agent of this invention also has a strong bond with the organic synthetic resin, so a protective film with strong adhesion is formed overall, and even if moisture enters through the organic synthetic resin, the hydrophobic silane coupling agent will remain intact. The presence of the agent prevents moisture from entering the surface of the object to be chemically converted.
従来、マグネシウム又はマグネシウム合金は塗
装膜を厚くして防錆する為に音圧放射能率を犠性
にすることがあつたが、本考案では塗装膜を厚く
することがなく防錆できる。実験によれば、44ミ
クロンのAZ61Aマグネシウム合金（アルミニウ
ム5.5％、亜鉛１％、マンガン0.2％）箔を直径
25m／ｍφドーム状にプレス成形し、重クロム酸
ソーダ、硝酸混液のクロム酸塩処理を行なつた試
料を樹脂濃度20％wtのアクリル樹脂溶液に浸漬
し、約15分室温中で乾燥後、70〜80℃で加熱乾燥
したアクリル樹脂膜約16ミクロン厚の試料を上水
道水により43℃、95％RHで加湿した場合、96時
間後錆を発生した。 Conventionally, magnesium or magnesium alloys have had to sacrifice sound pressure radiation efficiency in order to prevent rust by thickening the coating film, but with the present invention, rust prevention can be achieved without increasing the thickness of the coating film. According to experiments, AZ61A magnesium alloy (5.5% aluminum, 1% zinc, 0.2% manganese) foil with a diameter of 44 microns
A sample press-formed into a 25m/mφ dome shape and treated with chromate with a mixture of sodium dichromate and nitric acid was immersed in an acrylic resin solution with a resin concentration of 20%wt, and after drying at room temperature for about 15 minutes, When a sample of an acrylic resin film approximately 16 microns thick that had been heated and dried at 70 to 80°C was humidified with tap water at 43°C and 95% RH, rust occurred after 96 hours.
アクリル樹脂膜約30ミクロンの場合、上記と同
様加混した場合、168時間後錆を発生した。 When the acrylic resin film was approximately 30 microns thick and mixed in the same manner as above, rust occurred after 168 hours.
本考案によれば、上記と同様クロム酸塩処理を
行なつた試料をビニルトリエトキシシラン７％
wt溶液に浸漬し、（17〜23℃、65〜76％RH）の
室内で約20時間放置した後、樹脂濃度20％wtの
アクリル樹脂溶液に浸漬し、約15分室温中で乾燥
後、70〜80℃で加熱乾燥したシランカツプリング
膜約５ミクロン厚、アクリル樹脂膜約15ミクロン
厚さの試料を上水道水により43℃、95％RHで加
湿した場合、480時間異常がなかつた。 According to the present invention, a sample treated with chromate as described above was treated with 7% vinyltriethoxysilane.
After soaking in a wt solution and leaving it for about 20 hours indoors at (17-23℃, 65-76% RH), immersing it in an acrylic resin solution with a resin concentration of 20% wt, and drying it at room temperature for about 15 minutes. When a sample of a silane coupling film about 5 microns thick and an acrylic resin film about 15 microns thick, which had been heated and dried at 70 to 80°C, was humidified with tap water at 43°C and 95% RH, no abnormality occurred for 480 hours.
本考案は以上に述べたごとく、マグネシウム又
はマグネシウム合金を用いた音響機器用振動板の
実用上の防錆を可能ならしめたもので、工業上有
益な考案である。 As described above, the present invention enables practical rust prevention of diaphragms for audio equipment using magnesium or magnesium alloy, and is an industrially useful invention.
第１図は本考案の拡大断面図
１は振動板、２は皮膜、３はシランカツプリン
グ剤、４は合成樹脂皮膜。
Figure 1 is an enlarged sectional view of the present invention. 1 is a diaphragm, 2 is a film, 3 is a silane coupling agent, and 4 is a synthetic resin film.
Claims (1)
動板１表面に化成処理又は電解処理又は金属鍍金
せる皮膜２を形成し、その表面にビニルトリエト
キシシラン等シランカツプリング剤３を介してア
クリル樹脂等有機合成樹脂皮膜４を形成した音響
機器用振動板。 A film 2 that can be chemically treated, electrolytically treated, or metal plated is formed on the surface of a diaphragm 1 made of magnesium or a magnesium alloy, and an organic synthetic resin film 4 such as acrylic resin is applied to the surface via a silane coupling agent 3 such as vinyltriethoxysilane. A diaphragm for audio equipment made of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18248281U JPS5885876U (en) | 1981-12-07 | 1981-12-07 | Diaphragm for audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18248281U JPS5885876U (en) | 1981-12-07 | 1981-12-07 | Diaphragm for audio equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5885876U JPS5885876U (en) | 1983-06-10 |
| JPS6216061Y2 true JPS6216061Y2 (en) | 1987-04-23 |
Family
ID=29980880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18248281U Granted JPS5885876U (en) | 1981-12-07 | 1981-12-07 | Diaphragm for audio equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5885876U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007068018A (en) * | 2005-09-01 | 2007-03-15 | Pioneer Electronic Corp | Structural component for speaker device and speaker device |
-
1981
- 1981-12-07 JP JP18248281U patent/JPS5885876U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5885876U (en) | 1983-06-10 |
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