JPS5831267Y2 - Overtemperature detection wire - Google Patents
Overtemperature detection wireInfo
- Publication number
- JPS5831267Y2 JPS5831267Y2 JP17238678U JP17238678U JPS5831267Y2 JP S5831267 Y2 JPS5831267 Y2 JP S5831267Y2 JP 17238678 U JP17238678 U JP 17238678U JP 17238678 U JP17238678 U JP 17238678U JP S5831267 Y2 JPS5831267 Y2 JP S5831267Y2
- Authority
- JP
- Japan
- Prior art keywords
- overtemperature detection
- detection wire
- overtemperature
- coating layer
- polybutadiene
- 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
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Fire-Detection Mechanisms (AREA)
Description
【考案の詳細な説明】
本考案は火災警報等に用いる過温検知線、特に、動作温
度が90℃〜1.00℃の過温検知線の改良に関するも
ので、高弾性金属導体上に、重量平均分子量が8万〜2
0万、結晶化度が10%〜40係の1,2ポリブタジエ
ンを未架橋で被覆した絶縁素線を複数本撚合せてなるこ
とを特徴とし、火災に際して発生する熱等により梨型布
設されている上記過温検知線の絶縁被覆層が軟化し、撚
合された高弾性金属導体の間から軟化した絶縁被覆層が
締出されてついには導体同志が接触して電気回路か短絡
状態となるため、過温状態が検知できるものである。[Detailed description of the invention] The present invention relates to the improvement of overtemperature detection wires used for fire alarms, etc., especially overtemperature detection wires with an operating temperature of 90°C to 1.00°C. Weight average molecular weight is 80,000 to 2
It is characterized by being made by twisting together multiple insulated wires coated with uncrosslinked 1,2 polybutadiene with a crystallinity of 10% to 40%, and is laid in a pear shape due to the heat generated during a fire. The insulation coating layer of the above-mentioned overtemperature detection wire softens, and the softened insulation coating layer is squeezed out from between the twisted highly elastic metal conductors, and the conductors eventually come into contact with each other, causing a short circuit in the electrical circuit. Therefore, an overtemperature condition can be detected.
従来、動作温度が90℃〜100℃のこの種過温検知線
の絶縁材料としては、塩化ビニル(pvc)系のものが
一般的に用いられている。Conventionally, vinyl chloride (PVC)-based insulating materials have generally been used as insulating materials for this type of overtemperature detection wire whose operating temperature is 90° C. to 100° C.
例えは、塩化ビニル樹脂、酢酸ビニル樹脂共重合物(実
合度約800)100部、ヂオクチルフタレート10部
、デシクロへキシルフタレート5部、安定剤5.5部か
らなる混和物がその代表である。For example, a typical example is a mixture consisting of 100 parts of vinyl chloride resin, vinyl acetate resin copolymer (realization degree of about 800), 10 parts of dioctyl phthalate, 5 parts of decyclohexyl phthalate, and 5.5 parts of a stabilizer. .
このようにPVC系絶縁材料を用いた過温検知線は次の
ような欠点を有する。As described above, the overtemperature detection wire using PVC-based insulating material has the following drawbacks.
即ち、(1)布設後長期にわたった場合絶縁被覆層中に
混入させた可塑剤が離脱して絶縁被覆層の軟化特性に変
化をきたし、動作温度が不安定となり易い。That is, (1) If the insulation coating layer is left for a long period of time after installation, the plasticizer mixed into the insulation coating layer will be released and the softening characteristics of the insulation coating layer will change, making the operating temperature likely to become unstable.
(2)PVCは60℃程度の雰囲気下で長期間鋼線に接
していると徐々に進行しているPVCの熱劣化によって
発生する塩化水素が原因となって鋼線表面を腐食させ易
い。(2) When PVC is in contact with steel wire for a long period of time in an atmosphere of about 60° C., the surface of the steel wire tends to corrode due to hydrogen chloride generated by the gradual thermal deterioration of PVC.
本考案は、上記に鑑み、PVC系の絶縁材料と同程度或
はそれ以上の鋭敏な軟化特性を有しかつ、長期的に動作
温度が安定であり、60℃程度の雰囲気下でも鋼線表面
を腐食させない絶縁材料の開発に努め、遂に上記1,2
ポリブタジエンを見出したものである。In view of the above, the present invention has a sharp softening property comparable to or better than that of PVC-based insulating materials, has a stable operating temperature over a long period of time, and has a steel wire surface that is stable even in an atmosphere of about 60°C. We strived to develop an insulating material that does not corrode the
They discovered polybutadiene.
本考案による過温検知線の実施例を第1図に示す。An embodiment of the overtemperature detection line according to the present invention is shown in FIG.
第1図において、1は外径0.9mmの鋼線からなる導
体11の上に、重量平均分子量10万、結晶化度20%
の未架橋の1,2ポリブタジエンからなる厚さ0.4m
mの絶縁被覆12を設けてなる絶縁素線であり、2本の
該絶縁素線1を撚合せている。In Fig. 1, 1 is a conductor 11 made of steel wire with an outer diameter of 0.9 mm, a weight average molecular weight of 100,000, and a crystallinity of 20%.
0.4 m thick made of uncrosslinked 1,2 polybutadiene
This is an insulated strand provided with an insulation coating 12 of m, and two insulated strands 1 are twisted together.
該撚線上にマイラーテープで押え巻をほどこした上に0
.15mmの厚さのナイロンを被覆した過温検知線の軟
化特性は第2図のとおりであり、図のとおり鋭敏な軟化
特性を示す。A Mylar tape was applied to the stranded wires, and then 0
.. The softening characteristics of the overtemperature detection wire coated with nylon having a thickness of 15 mm are shown in FIG. 2, and as shown in the figure, it exhibits sharp softening characteristics.
第2図において、縦軸は雰囲気温度(’C)、横軸は、
導体同志が接触するまでの時間(分)である。In Figure 2, the vertical axis is the ambient temperature ('C), and the horizontal axis is
This is the time (minutes) it takes for conductors to come into contact with each other.
本考案の過温検知線に用いる1、2ポリブタジエンは重
量平均分子量が8万〜20万、好ましくは10万〜16
万、かつ、結晶化度が10%〜40%、好ましくは15
饅〜25%であり未架橋状態で絶縁被覆層を構成する。The 1,2 polybutadiene used in the overtemperature detection wire of the present invention has a weight average molecular weight of 80,000 to 200,000, preferably 100,000 to 16
10,000, and the crystallinity is 10% to 40%, preferably 15
It has a content of 25% to 25% and constitutes an insulating coating layer in an uncrosslinked state.
平均分子量及び結晶化度が上記範囲外のものはいづれも
好ましくない。Anything with an average molecular weight or crystallinity outside the above range is not preferred.
即ち、重量平均分子量が8万未満では液状化して被覆層
を構成し難い。That is, if the weight average molecular weight is less than 80,000, it is difficult to liquefy and form a coating layer.
20万を越えると溶融温度が高くて作動時間が長くなり
すきる。If it exceeds 200,000, the melting temperature will be high and the operating time will be long.
また、結晶化度が10φ未満では、圧力がカバれは常温
でも変形し易く、逆に40優を越えると樹脂の熱安定性
の限界を越える程融点が高くなり加工が困難となる。Further, if the degree of crystallinity is less than 10φ, the resin will be easily deformed even at room temperature under pressure, and if it exceeds 40, the melting point will be so high as to exceed the limit of thermal stability of the resin, making processing difficult.
本考案の過温検知線は、前述のとおり、90〜100℃
の雰囲気温度下において、鋭敏な過温検知性能を有し、
かつ、使用する絶縁材料は可塑剤を含まず、塩化水素も
発生しないため、PVC系絶縁材を使用した際に生じる
前述の問題はなく、長期的に安定な性能を維持し得る。As mentioned above, the overtemperature detection line of the present invention is 90 to 100℃.
It has a sensitive overtemperature detection performance under the ambient temperature of
Moreover, since the insulating material used does not contain a plasticizer and does not generate hydrogen chloride, the above-mentioned problems that occur when using a PVC-based insulating material are eliminated, and stable performance can be maintained over a long period of time.
必要に応じて純粋な1,2ポリブタジエンに通常PVC
に使われているような量の増量剤、顔料等を添加して用
いてもよい。Usually PVC to pure 1,2 polybutadiene as required
It is also possible to add fillers, pigments, etc. in amounts similar to those used in .
第1図は本考案の過温検知線の1実施例の断面図、第2
図は本考案の過温検知線の1実施例の軟化特性を示すグ
ラフである。
第1図において、11・・・・・・導体、12・・・・
・・絶縁被覆層、1・・・・・・絶縁素線。Figure 1 is a sectional view of one embodiment of the overtemperature detection wire of the present invention, Figure 2
The figure is a graph showing the softening characteristics of one embodiment of the overtemperature detection line of the present invention. In Fig. 1, 11...conductor, 12...
...Insulating coating layer, 1...Insulating wire.
Claims (1)
結晶化度が10%〜40%の1,2ポリブタジエンを未
架橋で被覆した絶縁素線を複数本撚合せてなる過温検知
線。On a highly elastic metal conductor, the weight average molecular weight is 80,000 to 200,000,
An overtemperature detection wire made by twisting together a plurality of insulated wires coated with uncrosslinked 1,2 polybutadiene having a crystallinity of 10% to 40%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17238678U JPS5831267Y2 (en) | 1978-12-15 | 1978-12-15 | Overtemperature detection wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17238678U JPS5831267Y2 (en) | 1978-12-15 | 1978-12-15 | Overtemperature detection wire |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5589194U JPS5589194U (en) | 1980-06-19 |
JPS5831267Y2 true JPS5831267Y2 (en) | 1983-07-11 |
Family
ID=29177129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17238678U Expired JPS5831267Y2 (en) | 1978-12-15 | 1978-12-15 | Overtemperature detection wire |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5831267Y2 (en) |
-
1978
- 1978-12-15 JP JP17238678U patent/JPS5831267Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5589194U (en) | 1980-06-19 |
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