JPS5947871B2 - Sea heater - Google Patents
Sea heaterInfo
- Publication number
- JPS5947871B2 JPS5947871B2 JP12155776A JP12155776A JPS5947871B2 JP S5947871 B2 JPS5947871 B2 JP S5947871B2 JP 12155776 A JP12155776 A JP 12155776A JP 12155776 A JP12155776 A JP 12155776A JP S5947871 B2 JPS5947871 B2 JP S5947871B2
- Authority
- JP
- Japan
- Prior art keywords
- heater
- sheathed heater
- metal pipe
- insulating material
- silicone 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
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 18
- 229920002050 silicone resin Polymers 0.000 claims description 11
- 239000000395 magnesium oxide Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000005871 repellent Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000012777 electrically insulating material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001474374 Blennius Species 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 229910003077 Ti−O Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Silicon Polymers (AREA)
- Resistance Heating (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Description
【発明の詳細な説明】
本発明は吸湿によるシーズヒータの絶縁抵抗特性の改良
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improving the insulation resistance characteristics of a sheathed heater due to moisture absorption.
従来のシーズヒーメは、一般的に第１図に示すように、
金属パイプ１と、端子棒２を溶接したコイル状ヒータ３
との間に電気絶縁材料４を充填している。Conventional seaweed is generally as shown in Figure 1.
A coiled heater 3 in which a metal pipe 1 and a terminal rod 2 are welded together.
An electrically insulating material 4 is filled between the two.
この際、電気絶縁材料４としてはマグネシア粉末が最も
広く使用されるが、マグネシア粉末は吸湿性があるため
、室内雰囲気で容易に吸湿し絶縁抵抗を劣化させるとい
う欠点があつた。そこで、このマグネシア粉末にシリコ
ン樹脂を混合した後加熱し、マグネシア粉末表面にシリ
コン樹脂膜を形成させることにより、充填材表面が撥水
性を持ち、外部の湿気を容易に吸湿しなくなり、絶縁性
能の劣化を防止する方法が提案さわている。しかし、こ
の方法では、シリコン樹脂の耐熱温度が約３５０℃と低
いため、高温使用後においてはシリコン樹脂の分解によ
り撥水性が低下し、室内雰囲気中で充填材が吸湿をおこ
し、絶縁特性の劣化をおこしやすいという欠点があつた
。本発明は、かかる欠点を克服するもので、すなわちシ
ーズヒータの高温使用によつても絶縁特性が劣化しない
ように、電気絶縁材料に用いるマグネシア粉末など自体
の表面に高温加熱後も劣化しない撥水性を附与し、かつ
長期間の使用によつても変質しないシーズヒータを提供
するものである。In this case, magnesia powder is most widely used as the electrical insulating material 4, but since magnesia powder is hygroscopic, it has the disadvantage that it easily absorbs moisture in the indoor atmosphere and deteriorates the insulation resistance. Therefore, by mixing silicone resin with this magnesia powder and heating it to form a silicone resin film on the surface of the magnesia powder, the surface of the filler becomes water repellent, does not easily absorb moisture from the outside, and improves insulation performance. Methods to prevent deterioration are being proposed. However, with this method, the heat resistance of silicone resin is as low as approximately 350°C, so after high-temperature use, the silicone resin decomposes and water repellency decreases, and the filler absorbs moisture in the indoor atmosphere, causing deterioration of insulation properties. The disadvantage is that it is easy to cause The present invention overcomes these drawbacks, namely, in order to prevent the insulation properties from deteriorating even when the sheathed heater is used at high temperatures, the surface of magnesia powder used as an electrical insulating material has a water-repellent property that does not deteriorate even after high-temperature heating. The present invention provides a sheathed heater which provides a sheathed heater with the following properties and which does not deteriorate even after long-term use.
以下本発明の一実施例を第２図に基ずいて説明すると、
第２図において５はシーズヒータの外筐体を構成する金
属パイプで、その中央にはヒータ６を有し、かつこのヒ
ータ６の両端にはそわぞれ金属ノミ・イプ５より突出す
る端子棒□を設けている。８は金属パイプ５内に充填さ
れたマグネシア粉末に、ポリアルミノシロキサン、また
はポリチタノシロキサンなどのシリコン樹脂中のＳｉ原
子の一部をＡｔＮまたはＴｉで置換した耐熱・撥水性樹
脂を混合混和させた電気絶縁材料である。An embodiment of the present invention will be described below based on FIG. 2.
In FIG. 2, reference numeral 5 denotes a metal pipe constituting the outer casing of the sheathed heater, which has a heater 6 in its center, and terminal rods protruding from the metal chisel pipe 5 at both ends of the heater 6. □ is provided. 8 is a mixture of magnesia powder filled in the metal pipe 5 with a heat-resistant and water-repellent resin such as polyaluminosiloxane or polytitanosiloxane in which some of the Si atoms in the silicone resin are replaced with AtN or Ti. It is an electrically insulating material.
上記の如く作られたシーズヒータに通電する事により、
混合附与された上記ポリアルミノシロキサン、またはポ
リチタノシロキサンなどの樹脂は加熱さわ粘度が低下し
、マグネシア表面に被着し充填材に撥水性層を形成する
。By energizing the sheathed heater made as above,
The mixed and added resin, such as polyaluminosiloxane or polytitanosiloxane, has a reduced viscosity when heated and adheres to the surface of magnesia, forming a water-repellent layer on the filler.
かかるポリアルミノシロキサン、ポリチタノシロキサン
などのいわゆるポリメタロシロキサンは、シリコン樹脂
中のＳｉ原子の一部をＡｔ）またはＴｉで置換したもの
である。So-called polymetallosiloxanes such as polyaluminosiloxanes and polytitanosiloxanes are silicone resins in which some of the Si atoms are replaced with At) or Ti.
下記にその一般式を示すように、従来のシリコン樹脂、
すなわちポリオルガノシロキサンの骨格のＳｉ−Ｏ結合
すなわちシロキサン結合の一部をＡｔ−Ｏ結合、または
Ｔｉ−Ｏ結合などのメメロキサン結合に置換し、イオン
結合性の高いポリマーを形成させることにより、高い熱
安定性を発揮させたもので、従来のシリコン樹脂に較べ
、Ｓｉ／ＡｔまたはＴｉが０．１〜１０のもので耐熱性
が改善された樹脂である。ポリアルミノシロキサンの−
般式ただし式中のＲは、アルキル、アリール基を示す。As the general formula is shown below, conventional silicone resin,
In other words, a part of the Si-O bonds, that is, siloxane bonds in the backbone of polyorganosiloxane is replaced with memeloxane bonds such as At-O bonds or Ti-O bonds to form a polymer with high ionic bonding properties. It is a resin that exhibits stability and has improved heat resistance compared to conventional silicone resins with a Si/At or Ti ratio of 0.1 to 10. - of polyaluminosiloxane
In the general formula, R represents an alkyl or aryl group.
上記の樹脂を被着させたマグネシアを絶縁材料として用
いたシーズヒータは、シリコン樹脂を被着させた絶縁材
料を用いたものと較べ耐熱・撥水性が高〈約６００℃に
耐えられるものが得られた。以上のように、本発明シー
ズヒータは金属パイプ内にヒータおよび端子部を絶縁保
持する充填材料の粒子表面にポリアルミノシロキサン、
ポリチタノシロキサンなど、シリコン樹脂中のＳｉ原子
の−部をＡｔまたはＴｉで置換したポリメタロオルガノ
シロキサン層を施しているため、撥水性を持ち、かつ約
６００℃の高温に充填材が加熱された後も撥水性を失わ
な（−ｏさらに、それらの樹脂が分解してもアルミナ、
チタニア、およびシリカなどの電気絶縁体となり、電気
絶縁特性を保持させるなどの特長を有し、その工業的価
値は大である。Sheathed heaters that use magnesia coated with the above resin as an insulating material have higher heat resistance and water repellency than those that use an insulating material coated with silicone resin (one that can withstand temperatures of approximately 600°C is available). It was done. As described above, the sheathed heater of the present invention has polyaluminosiloxane on the particle surface of the filler material that insulates and holds the heater and the terminal part in the metal pipe.
Because it is coated with a polymetalloorganosiloxane layer such as polytitanosiloxane, in which the - part of the Si atoms in the silicone resin is replaced with At or Ti, it has water repellency and the filler can be heated to a high temperature of approximately 600°C. Even after the resin is decomposed, the alumina,
It is an electrical insulator such as titania and silica, and has great industrial value because it maintains electrical insulation properties.
第１図は従来のシーズヒータの断面図、第２図は本発明
の一実施例を示すシーズヒータの断面図である。
５ ・・・・・金属パイプ、６・・・・・叱−メ、Ｔ・
・・・・・端子棒、８・・・・・・電気絶縁材料。FIG. 1 is a sectional view of a conventional sheathed heater, and FIG. 2 is a sectional view of a sheathed heater showing an embodiment of the present invention. 5...Metal pipe, 6...Scolding, T.
...Terminal bar, 8...Electrical insulating material.
Claims (1)
間にマグネシヤ粉末などの電気絶縁材料を充填してなる
シーズヒータにおいて、前記充填材に、シリコン樹脂中
のＳｉ原子の一部をＡｌ、またはＴｉで置換した耐熱・
撥水性樹脂を混合附与させ、前記金属パイプ内に充填す
ることを特徴とするシーズヒータ。1. In a sheathed heater in which an electrical insulating material such as magnesia powder is filled between a coiled heater equipped with a terminal bar and a metal pipe, the filling material contains some of the Si atoms in the silicone resin, or Heat resistant and replaced with Ti
A sheathed heater characterized in that a water-repellent resin is mixed and added and filled into the metal pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12155776A JPS5947871B2 (en) | 1976-10-08 | 1976-10-08 | Sea heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12155776A JPS5947871B2 (en) | 1976-10-08 | 1976-10-08 | Sea heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5345740A JPS5345740A (en) | 1978-04-24 |
| JPS5947871B2 true JPS5947871B2 (en) | 1984-11-21 |
Family
ID=14814177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12155776A Expired JPS5947871B2 (en) | 1976-10-08 | 1976-10-08 | Sea heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5947871B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167293A (en) * | 1980-05-28 | 1981-12-22 | Mitsubishi Electric Corp | Sheathed heater and method of producing same |
-
1976
- 1976-10-08 JP JP12155776A patent/JPS5947871B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5345740A (en) | 1978-04-24 |
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