JPS6014791A - Heater - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は可撓性のある正の抵抗温度係数（以下ＰＴＣと
呼ぶ）をもったヒータに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flexible positive temperature coefficient of resistance (hereinafter referred to as PTC) heater.

従来例の構成とその問題点 従来のこの種のヒータは、第１図に示すように互いに離
れて位置する一対の銅等の金属製の電極１ａ、１ｂと、
一対の型棒１ａ、ｌｂＯ間に介在する導電性カーボンを
含むポリオレフィン樹脂からなる正の電気抵抗特性を有
する抵抗体２と、電ｉ１ａ、１ｂあるいは抵抗体２の囲
りに存在する電気絶縁層３から成り立っていた。この構
成では抵抗体２と電極１ａ、１ｂの間の接着性によシヒ
ータの抵抗特性を決定されるが、抵抗体２と電極１ａ、
１ｂの間の接着性を決定しているのが抵抗体２の中に含
まれるポリオレフィン樹脂と電極の成分である金属との
接着強度である。しかし、ポリオレフィン樹脂は電極性
に近いために金属等の異種材料と接着させるのは非常に
困難であるだめに、電極１ａ、１ｂと抵抗体２０間の接
着強度が弱く、ヒータ自身が可撓性をめているために、
ヒータ自身を折り曲げした場合の抵抗値の安定性に問題
を有していた。Configuration of conventional example and its problems As shown in FIG. 1, this type of conventional heater has a pair of electrodes 1a and 1b made of metal such as copper, which are located apart from each other, and
A resistor 2 having positive electrical resistance characteristics made of polyolefin resin containing conductive carbon interposed between a pair of mold rods 1a and lbO, and an electrical insulating layer 3 existing around the resistor 2 or the resistors 2a and 1b. It consisted of In this configuration, the resistance characteristics of the heater are determined by the adhesiveness between the resistor 2 and the electrodes 1a and 1b.
What determines the adhesiveness between resistor 2 is the adhesive strength between the polyolefin resin contained in resistor 2 and the metal that is a component of the electrode. However, since polyolefin resin is close to polarity, it is very difficult to bond it to different materials such as metals.Unfortunately, the adhesive strength between the electrodes 1a, 1b and the resistor 20 is weak, and the heater itself is flexible. Because you are thinking about
There was a problem with the stability of the resistance value when the heater itself was bent.

発明の目的 本発明はかかる従来の問題を解消するもので、ＰＴＣ抵
抗体と電極の間の接着強度を強くし、ζ−り自身を折シ
曲げした場合の抵抗値を安定させることを目的とする。Purpose of the Invention The present invention solves such conventional problems, and aims to strengthen the adhesive strength between the PTC resistor and the electrode and stabilize the resistance value when the ζ-ri itself is bent. do.

発明の構成 この目的を達成するために本発明は、互いに離れて位置
する一対の電極と、一対の前記電極の間に介在する４電
性カーボンを含み対金属接着性の官能基を含む結晶性重
合体からなる正の電気抵抗特性を有する抵抗体と、ｎ１
１記電極あるいは前記抵抗体の囲りに存在する電気絶縁
層から構成されたヒータである。この構成によって、抵
抗体の中に対金属接着性の官能基を含んでいる結晶性重
合体を含んでいるだめに、電極と抵抗体の間の接着強度
を強めるという作用を有する。Structure of the Invention In order to achieve this object, the present invention comprises a pair of electrodes located apart from each other, and a crystalline material containing a functional group adhesion to metal, which includes tetraelectric carbon and is interposed between the pair of electrodes. a resistor having positive electrical resistance characteristics made of a polymer, and n1
The heater is composed of an electrically insulating layer surrounding the electrode or the resistor. This structure has the effect of increasing the adhesive strength between the electrode and the resistor since the resistor contains a crystalline polymer containing a functional group adhesion to metal.

実施例の説明 以下、本発明の一実施例を第２図を用いて説明する。第
２図において、互いＫｌｊｌｌれて位置する一対の電Ｉ
Ｍ１ａ、Ｉｂと、−苅の電極１　ａ、１ｂの間に介在す
る心″１］工性カーボンを含み対金属接着性の官能基を
含む結晶性重合体からなる正の電気抵抗性を有する抵抗
体４と、電ｍｌａ、１ｂあるいは抵抗体４の囲りに存在
する電気絶縁層３とから構成されている。この実施例で
は対金属接着性の官能志（とじてカルボキシル基を用い
た。なお、第１図と同一部材には同一番号をイχｊして
いる。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 2, a pair of electric terminals I located at a distance
The core interposed between M1a, Ib and the electrodes 1a and 1b 1) A resistor having positive electrical resistance made of a crystalline polymer containing engineered carbon and containing a functional group adhesive to metal. It is composed of a conductor 4 and an electric insulating layer 3 existing around the resistor 4 and the resistor 4. In this example, a metal-adhesive functional group (carboxyl group was used). , the same members as in FIG. 1 are designated by the same numbers.

上記構成の抵抗体４を用いて電極１ａ、Ｉｂである銅と
の接着強度をテストするだめに次の試験を行った。導電
性カーボンを１５重量パーセント含むカルボキシル基を
含むオレフィン樹脂をｌ　ｍｙＲ厚プレスシートを２關
厚さの銅板に重ね合せ、２ｏ。Using the resistor 4 having the above configuration, the following test was conducted to test the adhesive strength with the copper electrodes 1a and Ib. An olefin resin containing carboxyl groups containing 15% by weight of conductive carbon was laminated onto a 2-inch thick copper plate and 2 o.

℃で１０分間、０．０２ｋｔｉ／ｃｌで熱プレスで加圧
・加熱し、冷却した後インヌトロン試験器によりＴビー
ル剥離試験を行った。この試験の結果、接）Ｎ強度は５
　ｋｑ　／α以」二であった。同様の試験を同じく導電
性カーボンを１５重量パーセントを含む官能基を含まな
いオレフィン樹脂を１ｍｍＪｉプレヌシートを２朋即さ
の銅板に重ね合せ、２００　’Ｃで１０分間０．０２に
９／ｃＡで加熱プレスで加圧・加熱し、冷却した後、同
様のＴビール剥削試験を行っだ３、この試験の結果にお
いては、接着強度はｌ　ｋｇ　／　Ｃ１ｎ以下であった
。これらの試験結果をみても、カルボキシル基を含むオ
レフィン樹脂を使用した」皿上試験による接着強度は、
官能基を持たないオレフィン樹脂にくらべ５倍以上の強
度をイｊすることとなった０ 丑だ、この実施例によるＢ　ｍｍ　Ｏ丸棒への１ｏ。The sample was pressurized and heated with a hot press at 0.02 kti/cl for 10 minutes at ℃, and after cooling, a T-beer peeling test was conducted using an Innutron tester. As a result of this test, the N strength was 5
kq/α or more. A similar test was carried out by superimposing two 1 mm Ji prenu sheets of functional group-free olefin resin containing 15 weight percent conductive carbon on a solid copper plate and heating at 0.02 to 9/cA for 10 minutes at 200'C. After pressurizing and heating with a press and cooling, a similar T-beer peeling test was conducted3.The results of this test showed that the adhesive strength was less than 1 kg/C1n. Looking at these test results, the adhesive strength in the dish test using olefin resin containing carboxyl groups is
The strength of the B mm O round bar according to this example was 1 o, which was more than 5 times stronger than the olefin resin without functional groups.

回巻き付はテストを行った。この結果、本発明のヒータ
においては試験前後の抵抗イ帥の開化は、数パーセン１
−であったが、従来例は抵抗値が１０数倍となった。こ
の様に、電極１ａ、１ｂである銅と抵抗体４との接着強
度が従来例に比べ５倍以上になるだめに、ヒータの抵抗
値が安定するという効果がある。The winding was tested. As a result, in the heater of the present invention, the opening of the resistance level before and after the test was reduced by several percentage points.
-, but in the conventional example, the resistance value was ten times higher. As described above, since the adhesive strength between the copper electrodes 1a and 1b and the resistor 4 is more than five times that of the conventional example, the resistance value of the heater is stabilized.

また、第２図に示したよりなＯ亜鈴型の他に、第３図に
示しだような電極の同心円型あるいはそれに類する形状
においても同様の結果を得られるのは明らかである。It is clear that, in addition to the narrow O-bell shape shown in FIG. 2, similar results can be obtained with a concentric electrode shape as shown in FIG. 3 or a similar shape.

寸だ、」皿上実施例においては、対金属接着性の官能基
をカルボキシル基としだが、水酸基・アミノ基、アルデ
ヒド基、ヌルフォン基等の官ｆ４［、および、それらの
官能基から誘導される複合官能基を含んだ結晶性重合体
においても、」皿上実施例における試験結果と同等ある
いはそれに近い接着強度を示した。In the example on the plate, the functional group adhesive to metal is a carboxyl group, but functional groups such as a hydroxyl group, an amino group, an aldehyde group, a nurphon group, etc., and derivatives derived from these functional groups are also used. Even in the case of a crystalline polymer containing a complex functional group, an adhesive strength equivalent to or close to the test result in the "on-dish example" was shown.

また、官能基ばかりではなく、ポリオレフィン樹脂の分
子構造において、炭素水素結合部分の一部分をハロゲン
化原子とおきかえた樹脂を含んだとしても１ｉｌｉｉ性
が生じ、金属液宿性が良好になるのは明らかである□ 発明の効果 以」二のように本発明のヒータによれば、力１金属液着
性の官能基を含む結晶性重合体を抵抗体の成分として持
つので、抵抗体とｉｕ　４’Ｍ間の接着性が大きくなり
、ヒータ自身の電気抵抗が安定する効果が得られる。Furthermore, it is clear that not only functional groups but also resins in which the molecular structure of polyolefin resin includes resins in which part of the carbon-hydrogen bonds are replaced with halogenated atoms will exhibit Illii properties and have good metal hydration properties. □ EFFECTS OF THE INVENTION As described in Section 2, according to the heater of the present invention, since the resistor contains a crystalline polymer containing a functional group capable of adhering to metal, the resistor and iu4' The adhesion between M is increased, and the effect of stabilizing the electrical resistance of the heater itself can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のヒータの一部切欠斜視図、第２図は本発
明の一実施例のヒータを示す一部切欠斜視図、第３図は
本発明のヒータの他の実施例を示す一部切欠斜視図であ
る。 ｌａ、１ｂ・・・・・電極、３・・・・・・電気絶縁層
、４・・・・・抵抗体。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図　ｌα 第３図 ／α ４６FIG. 1 is a partially cutaway perspective view of a conventional heater, FIG. 2 is a partially cutaway perspective view showing a heater according to an embodiment of the present invention, and FIG. 3 is a partially cutaway perspective view showing another embodiment of the heater according to the present invention. FIG. la, 1b...electrode, 3...electrical insulating layer, 4...resistor. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure lα Figure 3/α 46

Claims (1)

【特許請求の範囲】[Claims] 互いに離れて位置する一対の電極と、前記一対の電極の
間に介在する導電性カーボンを含み対金属接着性の官能
基を含む結晶性重合体からなる正の電気抵抗特性を有す
る抵抗体と、前記電極あるいは前記抵抗体の囲りに設け
た電気絶縁層からなるヒータ。a pair of electrodes located apart from each other, and a resistor having positive electrical resistance characteristics, which is made of a crystalline polymer containing conductive carbon and containing a functional group adhesive to metal, interposed between the pair of electrodes; A heater comprising an electrically insulating layer provided around the electrode or the resistor.