JPH02296824A - Polymeric temperature-sensitive element - Google Patents
Polymeric temperature-sensitive elementInfo
- Publication number
- JPH02296824A JPH02296824A JP1118218A JP11821889A JPH02296824A JP H02296824 A JPH02296824 A JP H02296824A JP 1118218 A JP1118218 A JP 1118218A JP 11821889 A JP11821889 A JP 11821889A JP H02296824 A JPH02296824 A JP H02296824A
- Authority
- JP
- Japan
- Prior art keywords
- diamine
- temperature
- dimer
- sensitive element
- acid
- 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.)
- Granted
Links
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000539 dimer Substances 0.000 claims abstract description 14
- PBLZLIFKVPJDCO-UHFFFAOYSA-N 12-aminododecanoic acid Chemical compound NCCCCCCCCCCCC(O)=O PBLZLIFKVPJDCO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 8
- 150000004985 diamines Chemical class 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- -1 aliphatic diamine Chemical class 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 abstract description 4
- 150000004984 aromatic diamines Chemical class 0.000 abstract description 2
- YMHQVDAATAEZLO-UHFFFAOYSA-N cyclohexane-1,1-diamine Chemical compound NC1(N)CCCCC1 YMHQVDAATAEZLO-UHFFFAOYSA-N 0.000 abstract description 2
- 235000013305 food Nutrition 0.000 abstract description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 abstract description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 abstract description 2
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 229920000299 Nylon 12 Polymers 0.000 description 10
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- UKXSKSHDVLQNKG-UHFFFAOYSA-N benzilic acid Chemical compound C=1C=CC=CC=1C(O)(C(=O)O)C1=CC=CC=C1 UKXSKSHDVLQNKG-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 description 1
- QFTYSVGGYOXFRQ-UHFFFAOYSA-N dodecane-1,12-diamine Chemical compound NCCCCCCCCCCCCN QFTYSVGGYOXFRQ-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000004986 phenylenediamines Chemical class 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Polyamides (AREA)
- Thermistors And Varistors (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Control Of Resistance Heating (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、電気毛布、電気敷布、電気カーペットなどの
面状発熱体の温度制御のための温度検知に使用される高
分子感温体に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a polymer temperature sensitive body used for temperature detection for temperature control of planar heating elements such as electric blankets, electric sheets, and electric carpets. It is something.
この種の感温体は温度調節機能に加えて、これら加熱機
器が異常昇温した場合に、狭い温度範囲で感温体が融解
し、ヒータ回路を遮断する安全の機能もあわせ有してい
る。In addition to the temperature control function, this type of thermosensor also has a safety feature that, if these heating devices become abnormally hot, the thermosensor melts within a narrow temperature range and shuts off the heater circuit. .
（従来の技術）
これ迄のこの種の目的のためには、主にナイロン１２が
用いられてきた。一般にナイロンはインピーダンスの温
度依存性が大きく、かつ、明瞭な融点を有するためこの
用途に適している。特にナイロン１２は市販ナイロン中
で最も吸水率が低く、インピーダンスの水分による影響
が最も小さい。(Prior Art) Until now, nylon 12 has mainly been used for this type of purpose. In general, nylon is suitable for this purpose because its impedance has a large temperature dependence and has a clear melting point. In particular, nylon 12 has the lowest water absorption rate among commercially available nylons, and the effect of water on impedance is the least.
従って水分による温度調節への影響が最も小さく好んで
この用途に用いられている。また安全機能としても、ナ
イロン１２は単一重合ナイロンの中で最も融点が低く、
最も安全に回路が遮断される。Therefore, it is preferably used for this purpose because the influence of moisture on temperature control is minimal. Also, as a safety feature, nylon 12 has the lowest melting point among single polymer nylons.
The circuit is cut off most safely.
しかしながら、ナイロン１２の融点は１７５〜１７８℃
であり、より低温で回路を遮断するよう更に低温の融点
を持つナイロンが望まれていた。However, the melting point of nylon 12 is 175-178℃
Therefore, nylon with an even lower melting point was desired so that it could interrupt the circuit at a lower temperature.
ナイロン１２を他のナイロンモノマーと共重合すること
で融点が低下することは公知である。しかし、一般にナ
イロン１２をベースにした共重合体はナイロン１２より
吸水率が高く、従ってインピーダンスが吸湿によって変
化し易く温度調節機能に劣っている。It is known that copolymerizing nylon 12 with other nylon monomers lowers the melting point. However, copolymers based on nylon 12 generally have a higher water absorption rate than nylon 12, so their impedance tends to change due to moisture absorption and are inferior in temperature control function.
（発明が解決しようとする課題）
本発明の目的は、温度調節機能に優れ、特に吸湿による
インピーダンス変化が小さく、かつ、より安全な、即ち
より低温でヒータ回路を遮断する高分子感温体を提供す
ることにある。(Problems to be Solved by the Invention) The object of the present invention is to provide a polymer thermosensitive material that has excellent temperature control function, has small impedance change due to moisture absorption, and is safer, that is, cuts off the heater circuit at a lower temperature. It is about providing.
（課題を解決するための手段）
即ち本発明は、ラウリルラクタムおよび又は１２−アミ
ノドデカン酸９９〜６０モル％と、水添ダイマー酸１〜
４０モル％および水添ダイマー酸と実質的に等モルの炭
素数４〜５０のジアミンからなる共重合ポリアミドより
なる高分子感温体である。(Means for Solving the Problems) That is, the present invention provides 99 to 60 mol% of lauryllactam and/or 12-aminododecanoic acid, and 1 to 60 mol% of hydrogenated dimer acid.
It is a polymeric temperature sensitive body made of a copolymerized polyamide comprising 40 mol % of a diamine having 4 to 50 carbon atoms and substantially equimolar amount to hydrogenated dimer acid.
ラウリルラクタム、１２−アミノドデカン酸は共にナイ
ロン１２のモノマーである。これらが９９モル％を越え
ると、共重合体は実質的にナイロン１２ポリマーとほと
んど同じ性質となり、融点もほとんど変わらない。逆に
６０モル％以下であると、融点が低下しすぎると共に融
点の明瞭さに欠けるようになる。Lauryllactam and 12-aminododecanoic acid are both monomers of nylon 12. When these exceed 99 mol%, the copolymer has substantially the same properties as nylon 12 polymer, and its melting point is almost the same. On the other hand, if it is less than 60 mol%, the melting point will be too low and will lack clarity.
本発明に述べる水添ダイマー酸は、食物油不飽和脂肪酸
の二量体を水添したものである。ダイマーの含有量が９
５％以上、更に好ましくは９８％以上であり、ヨウ素価
は２０以下、更に好ましくは１０以下の水添ダイマー酸
が用いられる。ダイマーの含有量が９５％以下あるいは
ヨウ素価が２０以上であると、共重合ポリアミドが充分
高分子量化しなかったり、ゲルが生じて押出しにより電
線を被覆することが不可能となったりする。The hydrogenated dimer acids described in the present invention are hydrogenated dimers of unsaturated fatty acids in food oils. Dimer content is 9
A hydrogenated dimer acid having an iodine value of 5% or more, more preferably 98% or more, and an iodine value of 20 or less, more preferably 10 or less is used. If the dimer content is less than 95% or the iodine value is more than 20, the copolyamide may not have a sufficiently high molecular weight, or a gel may form, making it impossible to coat electric wires by extrusion.
ジアミンとしてはへキサメチレンジアミン、ドデカメチ
レンジアミン等の脂肪族ジアミン、フェニレンジアミン
等の芳香族ジアミン、シクロヘキサンジアミン、イソホ
ロンジアミン等の脂環族ジアミンが例示できる。炭素数
が４より小さいジアミンは揮発し易いため重合させ難い
だけでなく、これを用いて得られた共重合ポリアミドの
吸水率が比較的高い。炭素数が５０を越えるジアミンは
入手困難であるだけでなく、本特許請求の範囲のモル分
率だけ共重合すると、共重合ポリアミド中に占めるナイ
ロン１２の量が低下しすぎ、融点が不明瞭になって好ま
しくない。Examples of diamines include aliphatic diamines such as hexamethylene diamine and dodecamethylene diamine, aromatic diamines such as phenylene diamine, and alicyclic diamines such as cyclohexane diamine and isophorone diamine. Diamines having less than 4 carbon atoms are not only difficult to polymerize because they easily volatilize, but also the copolyamide obtained using them has a relatively high water absorption rate. Not only is it difficult to obtain diamines having more than 50 carbon atoms, but if they are copolymerized at the molar fraction as claimed in this patent, the amount of nylon 12 in the copolyamide will be too low, making the melting point unclear. I don't like it.
本発明の好ましい一つの用い方として、インピーダンス
の検出が完全交流で行われている場合については、本発
明の感温体にハロゲン化アルカリ等のイオン物質を添加
して、温度によるインピーダンス変化を更に大きくする
ことができる。また別の好ましい用い方として、インピ
ーダンス検出手段が、たとえば半波整流のように直流成
分を含んでいる場合、本発明の感温体にベンジル酸化合
物（特願昭６３−２１８１８６ ）を添加して温度によ
るインピーダンス変化を更に大きくし、吸水率を更に低
下させることもできる。As a preferable method of using the present invention, when impedance detection is performed by completely alternating current, an ionic substance such as an alkali halide is added to the temperature sensitive body of the present invention to further suppress impedance changes due to temperature. Can be made larger. Another preferred method is to add a benzylic acid compound (Japanese Patent Application No. 63-218186) to the thermosensor of the present invention when the impedance detection means includes a DC component, such as half-wave rectification. It is also possible to further increase the change in impedance due to temperature and further reduce the water absorption rate.
本発明の感温体には安定剤、着色剤、滑剤等の添加剤を
添加することができる。Additives such as stabilizers, colorants, and lubricants can be added to the temperature sensitive body of the present invention.
（本発明の効果）
本発明による高分子感温体は、温度調節機能の水分によ
る影響が小さく、より低温でヒータ線回路を遮断するた
め、これを用いた電気毛布、電気カーペットはより正確
に温度調節され、かつ、より安全に使用され得る。また
、更にイオン性物質、あるいはベンジル酸化合物を添加
することで、更に温度調節機能を向上させることができ
る。(Effects of the present invention) The polymer thermosensitive body according to the present invention has less influence of moisture on its temperature control function and interrupts the heater wire circuit at a lower temperature. Temperature controlled and safer to use. Moreover, by further adding an ionic substance or a benzylic acid compound, the temperature control function can be further improved.
（実施例）
実施例１〜５、比較例１．２
表−１に示す七ツマ−を８１オートクレーブに、仕込み
、窒素置換後２２０℃に昇温した。内圧が一定となった
後徐々に放圧し、温度を更に２５０℃に昇温し、撹拌を
続けながら少量ずつオートクレーブ中に窒素を流した。(Example) Examples 1 to 5, Comparative Example 1.2 The 7-mers shown in Table 1 were charged into an 81 autoclave, and the temperature was raised to 220°C after purging with nitrogen. After the internal pressure became constant, the pressure was gradually released, the temperature was further raised to 250° C., and nitrogen was introduced little by little into the autoclave while stirring was continued.
２５０℃で２時間線合を進めた後、オートクレーブ底部
より窒素ガス圧により重合物を排出し水冷した。After proceeding with the line combination at 250° C. for 2 hours, the polymer was discharged from the bottom of the autoclave under nitrogen gas pressure and cooled with water.
得られた重合物をクラッシャーで破砕し、これから０．
５ｍｍ厚のシートをプレス成形して、その特性を測定し
た。結果を表−１に示す。The obtained polymer is crushed with a crusher, and then 0.
A 5 mm thick sheet was press-molded and its properties were measured. The results are shown in Table-1.
（以下余白）
実施例６
実施例−２による共重合ポリアミド１００重量部と、ベ
ンジル酸２モルとジアミノジフェニルメタン１モルの縮
合物１５重量部を３０ｍＩＩφ２軸押出機で混練し、０
．５ ｍ−厚のシートをプレス成形し、これの電気特性
を測定した。３０℃〜６０℃におけるインピーダンスの
サーミスタＢ定数は４．５００で充分大きく、温度調節
機能に優れていることが解った。吸湿によるインピーダ
ンス変化も１．９であり温度の影響も小さいことが解っ
た。(Leaving space below) Example 6 100 parts by weight of the copolyamide according to Example-2 and 15 parts by weight of a condensate of 2 moles of benzylic acid and 1 mole of diaminodiphenylmethane were kneaded in a 30 mIIφ twin-screw extruder.
．． A 5 m-thick sheet was press-molded and its electrical properties were measured. It was found that the thermistor B constant of impedance at 30°C to 60°C was sufficiently large at 4.500, and the temperature control function was excellent. The impedance change due to moisture absorption was also 1.9, indicating that the influence of temperature was also small.
実施例７
実施例−２による共重合ポリアミド１００重量部と、ヨ
ウ化カリ０．５重量部を含む飽和水溶液を混合し、乾燥
後、３０■ｌφ２軸押出機で混練し、０．５−厚のシー
トをプレス成形し、これの電気特性を測定した。３０℃
〜６０℃におけるインピーダンスのサーミスタＢ定数は
ｅ、ａｏｏで温度調節機能に優れていることが解った。Example 7 100 parts by weight of the copolyamide according to Example-2 and a saturated aqueous solution containing 0.5 parts by weight of potassium iodide were mixed, dried, and kneaded in a 30 lφ twin-screw extruder to give a 0.5-thickness A sheet was press-molded and its electrical properties were measured. 30℃
It was found that the thermistor B constants of impedance at ~60°C were e and aoo, indicating that it had an excellent temperature control function.
吸湿によるインピーダンス変化は２．４であった。The impedance change due to moisture absorption was 2.4.
Claims (1)
９〜６０モル％と水添ダイマー酸１〜４０モル％および
水添ダイマー酸と実質的に等モルの炭素数４〜５０のジ
アミンからなる共重合ポリアミドよりなる高分子感温体
。Lauryllactam and or 12-aminododecanoic acid 9
1. A polymer temperature sensitive body made of a copolymerized polyamide comprising 9 to 60 mol % of a hydrogenated dimer acid, 1 to 40 mol % of a hydrogenated dimer acid, and a diamine having 4 to 50 carbon atoms in a substantially equimolar amount to the hydrogenated dimer acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1118218A JP2779833B2 (en) | 1989-05-11 | 1989-05-11 | Polymer thermosensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1118218A JP2779833B2 (en) | 1989-05-11 | 1989-05-11 | Polymer thermosensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02296824A true JPH02296824A (en) | 1990-12-07 |
| JP2779833B2 JP2779833B2 (en) | 1998-07-23 |
Family
ID=14731145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1118218A Expired - Lifetime JP2779833B2 (en) | 1989-05-11 | 1989-05-11 | Polymer thermosensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2779833B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57174319A (en) * | 1981-04-21 | 1982-10-27 | Daicel Chem Ind Ltd | High-molecular heat-sensitive substance |
| JPS591531A (en) * | 1982-06-25 | 1984-01-06 | Daicel Chem Ind Ltd | Temperature-sensitive polymeric material |
-
1989
- 1989-05-11 JP JP1118218A patent/JP2779833B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57174319A (en) * | 1981-04-21 | 1982-10-27 | Daicel Chem Ind Ltd | High-molecular heat-sensitive substance |
| JPS591531A (en) * | 1982-06-25 | 1984-01-06 | Daicel Chem Ind Ltd | Temperature-sensitive polymeric material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2779833B2 (en) | 1998-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3380654B2 (en) | Process for producing precondensates of partially crystalline or amorphous, thermoplastically processable, partially aromatic polyamides or copolyamides | |
| JPH06287297A (en) | Polyamide molding material, its production, and molded article produced therefrom | |
| EP0070001B1 (en) | Polyamide blends | |
| EP1908800A1 (en) | Polyamide resin composition | |
| EP1943291B1 (en) | Hydrolysis resistant polyamide compositions, and articles formed therefrom | |
| KR20020074446A (en) | Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide | |
| EP0782153B1 (en) | Temperature-sensing polymer body and temperature-sensing element made therefrom | |
| JPH02296824A (en) | Polymeric temperature-sensitive element | |
| KR100275175B1 (en) | Process for making partially aromatic polyamides containing 2-methylpentamethylenediamine units. | |
| US4985534A (en) | Polyetheramide hotmelt-adhesives | |
| GB1558800A (en) | Polyaminde terpolymers | |
| AU2236092A (en) | Copolyadipamide containing trimethylhexamethyleneadipamide units and products prepared therefrom | |
| JP5373306B2 (en) | Multi-layer pellets and resin molded products | |
| JPH0797486A (en) | Antioxidant-containing polyolefin polymer composition | |
| NO164662B (en) | HOMOGENIC COPOLYETERAMIDS. | |
| JPS591531A (en) | Temperature-sensitive polymeric material | |
| JP2003165838A (en) | Method for producing polyamide, and polyamide | |
| JP2593694B2 (en) | Polymer thermosensor | |
| RU1628491C (en) | Method of obtaining block-copolymers | |
| JP3575221B2 (en) | Polyamide and method for producing the same | |
| JPH0251927B2 (en) | ||
| JPS58222110A (en) | Temperatue-sensitive polymer | |
| KR0156796B1 (en) | High transparent thermoplastic copolyamide composition | |
| JPS5946977B2 (en) | heat sensitive element | |
| US2336824A (en) | Interpolyamides |