JPS6314826B2 - - Google Patents
Info
- Publication number
- JPS6314826B2 JPS6314826B2 JP10613481A JP10613481A JPS6314826B2 JP S6314826 B2 JPS6314826 B2 JP S6314826B2 JP 10613481 A JP10613481 A JP 10613481A JP 10613481 A JP10613481 A JP 10613481A JP S6314826 B2 JPS6314826 B2 JP S6314826B2
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- thermosetting resin
- resin composition
- conductive fibers
- laminate
- 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
- 239000000835 fiber Substances 0.000 claims description 34
- 229920001187 thermosetting polymer Polymers 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000011342 resin composition Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 7
- 239000004917 carbon fiber Substances 0.000 description 7
- -1 and specifically Polymers 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000006082 mold release agent Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 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
- 239000010425 asbestos Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Description
【発明の詳細な説明】 本発明は面発熱体の製造方法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing a surface heating element.
導電性繊維を熱硬化性樹脂中に分散させた面発
熱体が従来より知られているが、一般に導電性繊
維を樹脂に均一に分散させることが困難であり、
繊維が相互に絡み合つたりして、均一な所定の電
気抵抗を有さず、従つて、所定の均一な発熱温度
分布を有する面発熱体を再現性よく得ることがで
きない欠点がある。 Surface heating elements in which conductive fibers are dispersed in a thermosetting resin have been known, but it is generally difficult to uniformly disperse the conductive fibers in the resin.
There is a drawback that the fibers do not have a uniform predetermined electric resistance because the fibers are intertwined with each other, and therefore a surface heating element having a predetermined uniform heat generation temperature distribution cannot be obtained with good reproducibility.
本発明は上記に鑑みてなされたものであつて、
均一な所定の発熱温度分布を有する面発熱体を再
現性よく製造する方法を提供することを目的とす
る。 The present invention has been made in view of the above, and includes:
It is an object of the present invention to provide a method for manufacturing a surface heating element having a uniform predetermined heat generation temperature distribution with good reproducibility.
本発明の面発熱体の製造方法は、導電性繊維を
分散させた熱硬化性樹脂組成物の層の上に絶縁性
繊維シートを積層して積層物とし、この積層物の
上から該積層物の一端から他端にけて複数の帯状
に押圧して熱硬化性樹脂組成物を絶縁性繊維シー
トに含浸させると共に、導電性繊維を配向させた
後、熱硬化性樹脂を硬化させることを特徴とする
ものである。 The method for producing a surface heating element of the present invention includes laminating an insulating fiber sheet on a layer of a thermosetting resin composition in which conductive fibers are dispersed to form a laminate; The method is characterized in that the thermosetting resin composition is impregnated into the insulating fiber sheet by pressing a plurality of strips from one end to the other, and after orienting the conductive fibers, the thermosetting resin is cured. That is.
本発明において熱硬化性樹脂として不飽和ポリ
エステル樹脂が好ましく用いられるが、これに限
定されるものではなく、フエノール樹脂、エポキ
シ樹脂等も必要に応じて用いられる。熱硬化性樹
脂組成物は導電性繊維、触媒又は硬化剤のほか、
必要に応じて増粘剤、充填剤、重合禁止剤、内部
離型剤、着色剤等を含有する。導電性繊維は、電
気抵抗が10-2Ωcm以下の導電性を有することが好
ましく、例えばスチール繊維、ステンレス繊維等
の金属繊維や炭素繊維が挙げられるが、好ましく
は炭素繊維が用いられる。充填剤は、用いる熱硬
化性樹脂よりも熱伝導率の高いものが好ましく、
炭酸カルシウム、アルミナ、クレー、マイカ、タ
ルク等が用いられる。 In the present invention, unsaturated polyester resin is preferably used as the thermosetting resin, but it is not limited thereto, and phenol resin, epoxy resin, etc. may also be used as necessary. The thermosetting resin composition contains conductive fibers, a catalyst, or a curing agent, as well as
Contains thickeners, fillers, polymerization inhibitors, internal mold release agents, colorants, etc. as necessary. The conductive fibers preferably have conductivity with an electrical resistance of 10 −2 Ωcm or less, and include metal fibers such as steel fibers and stainless steel fibers, and carbon fibers, with carbon fibers being preferably used. The filler preferably has higher thermal conductivity than the thermosetting resin used,
Calcium carbonate, alumina, clay, mica, talc, etc. are used.
熱硬化性樹脂組成物の調製方法は特に制限され
ないが、熱硬化性樹脂に充填剤ほか必要な添加剤
を混合分散させた後に導電性繊維を添加、撹拌す
れば、導電性繊維の絡み合いもなく、均一に樹脂
中に分散されるので好ましい。 The method for preparing the thermosetting resin composition is not particularly limited, but if the conductive fibers are added and stirred after mixing and dispersing the filler and other necessary additives in the thermosetting resin, the conductive fibers will not become entangled. is preferable because it is uniformly dispersed in the resin.
このような導電性繊維を含有する熱硬化性樹脂
組成物を含浸させる絶縁性繊維シートは、熱硬化
性樹脂を容易に含浸し得るものが望ましく、具体
的にはポリプロピレン、ポリビニルアルコール、
ポリエステル、ポリアミド、羊毛、木綿等の有機
繊維や、ガラス繊維、石綿等の無機繊維からなる
織布、不織布等が用いられるが、熱硬化性樹脂組
成物との親和性等からガラス繊維からなるチヨツ
プドストランドマツト、コンテイニユアスストラ
ンドマツト、ガラスクロス等が好ましく用いられ
る。 The insulating fiber sheet impregnated with the thermosetting resin composition containing such conductive fibers is preferably one that can be easily impregnated with the thermosetting resin, and specifically, polypropylene, polyvinyl alcohol,
Woven fabrics and non-woven fabrics made of organic fibers such as polyester, polyamide, wool, cotton, etc., and inorganic fibers such as glass fibers and asbestos are used; Tucked strand mats, continuous strand mats, glass cloth, etc. are preferably used.
本発明においては、導電性繊維を含有する熱硬
化性樹脂組成物を絶縁性繊維シートに含浸させる
に際して、絶縁性繊維シートとこの上の熱硬化性
樹脂組成物の層とからなる積層物を、その上から
一端より他端にかけて複数の帯状に押圧する。こ
のためには例えば周面に円周方向に複数の溝を有
するローラが用いられる。このような溝付きロー
ラによれば、積層物は溝間の突状帯にて押圧さ
れ、熱硬化性樹脂組成物は流動して、含有する充
填剤等の添加物と共に絶縁性シートを含浸すると
同時に、導電性繊維はローラの有する円周方向の
溝に沿つて配向し、絶縁性繊維シート上に固定さ
れる。この後に熱硬化性樹脂組成物を加熱硬化す
れば面発熱体を得ることができる。 In the present invention, when impregnating an insulating fiber sheet with a thermosetting resin composition containing conductive fibers, a laminate consisting of an insulating fiber sheet and a layer of a thermosetting resin composition thereon, From above, press in a plurality of strips from one end to the other. For this purpose, for example, a roller having a plurality of circumferential grooves on its circumferential surface is used. According to such a grooved roller, the laminate is pressed by the protruding bands between the grooves, and the thermosetting resin composition flows and impregnates the insulating sheet with additives such as fillers. At the same time, the conductive fibers are oriented along the circumferential grooves of the roller and fixed onto the insulating fiber sheet. Thereafter, a surface heating element can be obtained by heating and curing the thermosetting resin composition.
以上のように、本発明によれば、導電性繊維は
絶縁性繊維シート上に一方向に均一に配向される
ので、繊維相互の接触密度が高められ、しかも絶
縁性繊維に密着固定されているため、均一な所定
の低電気抵抗の面発熱体が再現性よく得られるの
である。 As described above, according to the present invention, since the conductive fibers are uniformly oriented in one direction on the insulating fiber sheet, the contact density between the fibers is increased, and moreover, the conductive fibers are closely fixed to the insulating fibers. Therefore, a uniform surface heating element with a predetermined low electrical resistance can be obtained with good reproducibility.
以下に本発明の実施例を説明する。なお、部は
重量部を意味する。 Examples of the present invention will be described below. In addition, parts mean parts by weight.
実施例
不飽和ポリエステル樹脂100部、触媒１部、重
合禁止剤0.03部、増粘剤0.5部及び内部離型剤4.5
部を混合撹拌し、次に炭酸カルシウム100部を加
え、撹拌した後、直径12.5μ、長さ６mmの炭素繊
維１部を加え、撹拌して、熱硬化性樹脂組成物を
調製した。Example 100 parts of unsaturated polyester resin, 1 part of catalyst, 0.03 part of polymerization inhibitor, 0.5 part of thickener, and 4.5 parts of internal mold release agent.
Next, 100 parts of calcium carbonate was added and stirred, and then 1 part of carbon fiber having a diameter of 12.5 μm and a length of 6 mm was added and stirred to prepare a thermosetting resin composition.
この樹脂組成物を離型紙上に厚さ１mmに塗布
し、この上に目付量450ｇ／m2のガラス繊維チヨ
ツプドストランドマツトを載置し、さらにポリエ
チレンフイルムで被覆した。次に、周面に円周方
向に深さ５mm、幅５mmの溝をピツチ10mmで有する
溝付きローラとクリアランス0.7mmで設置された
周面の平坦なロールとの間に上記積層物を供給
し、線圧1.2Kg／cmで加圧し、樹脂をガラス繊維
マツトに含浸させると共に、炭素繊維をガラス繊
維マツトの長手方向に配向させて固定した。得ら
れた樹脂含浸マツトをセロハン紙で密封包装し、
24時間養生した後、離型紙を剥離した。炭素繊維
の分散状態を観察した所、溝付きローラの谷部に
接した部分に該繊維が密集しており、又、積層物
がローラに供給された方向に該繊維の多くが配向
していた。 This resin composition was applied to a thickness of 1 mm on a release paper, a glass fiber chopped strand mat having a basis weight of 450 g/m 2 was placed thereon, and the resin composition was further covered with a polyethylene film. Next, the above laminate was supplied between a grooved roller having grooves with a depth of 5 mm and a width of 5 mm in the circumferential direction at a pitch of 10 mm, and a roll with a flat circumferential surface installed with a clearance of 0.7 mm. Pressure was applied at a linear pressure of 1.2 kg/cm to impregnate the glass fiber mat with the resin, and at the same time, the carbon fibers were oriented and fixed in the longitudinal direction of the glass fiber mat. The resulting resin-impregnated mats were sealed and packaged with cellophane paper.
After curing for 24 hours, the release paper was peeled off. When the state of dispersion of the carbon fibers was observed, it was found that the fibers were densely packed in the area in contact with the troughs of the grooved roller, and most of the fibers were oriented in the direction in which the laminate was fed to the roller. .
10分間加熱硬化させて面発熱体を得た。この面
発熱体は、炭素繊維の配向方向と直交する電極を
設けると30Ωの面抵抗値を有していた。同様にし
て面発熱体10枚を製作したところ、電気抵抗のば
らつきは±10％以内であつた。また、これらの面
発熱体に250W／m2の電力を印加したところ、表
面温度は40℃±４℃であつた。なお、面抵抗値は
次の式により求めた。面抵抗値＝電極間の抵抗値
（Ω）×電極の長さ／電極間距離。 A surface heating element was obtained by heating and curing for 10 minutes. This sheet heating element had a sheet resistance value of 30Ω when an electrode was provided perpendicular to the orientation direction of the carbon fibers. When 10 surface heating elements were manufactured in the same manner, the variation in electrical resistance was within ±10%. Furthermore, when a power of 250 W/m 2 was applied to these surface heating elements, the surface temperature was 40°C±4°C. In addition, the sheet resistance value was calculated|required by the following formula. Surface resistance value = resistance value between electrodes (Ω) x length of electrode / distance between electrodes.
比較例
実施例１で得た積層物を溝付きローラで加圧す
ることなく、24時間養生した。炭素繊維は無配向
でガラス繊維マツト上に分布しており、実施例１
と同じ条件で加熱硬化して得た面発熱体の面抵抗
は70Ωであつた。同様にして面発熱体10枚を製作
したところ、面抵抗値のばらつきが著しく、100
Ωに達するものもあつた。Comparative Example The laminate obtained in Example 1 was cured for 24 hours without being pressed with a grooved roller. The carbon fibers were distributed on the glass fiber mat without orientation, and in Example 1
The sheet resistance of the sheet heating element obtained by heating and curing under the same conditions as above was 70Ω. When 10 sheet heating elements were manufactured in the same manner, the sheet resistance values varied significantly.
Some reached Ω.
Claims (1)
の層の上に絶縁性繊維シートを積層して積層物と
し、この積層物の上から該積層物の一端から他端
にかけて複数の帯状に押圧して熱硬化性樹脂組成
物を絶縁性繊維シートに含浸させると共に、導電
性繊維を配向させた後、熱硬化性樹脂を硬化させ
ることを特徴とする面発熱体の製造方法。1. An insulating fiber sheet is laminated on a layer of a thermosetting resin composition in which conductive fibers are dispersed to form a laminate, and a plurality of strips are formed on the laminate from one end of the laminate to the other end. A method for producing a surface heating element, which comprises impregnating an insulating fiber sheet with a thermosetting resin composition by pressing, orienting conductive fibers, and then curing the thermosetting resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10613481A JPS587785A (en) | 1981-07-06 | 1981-07-06 | Method of producing panel heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10613481A JPS587785A (en) | 1981-07-06 | 1981-07-06 | Method of producing panel heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS587785A JPS587785A (en) | 1983-01-17 |
| JPS6314826B2 true JPS6314826B2 (en) | 1988-04-01 |
Family
ID=14425916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10613481A Granted JPS587785A (en) | 1981-07-06 | 1981-07-06 | Method of producing panel heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS587785A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5043350B2 (en) * | 2006-03-20 | 2012-10-10 | 株式会社タダノ | crane |
-
1981
- 1981-07-06 JP JP10613481A patent/JPS587785A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS587785A (en) | 1983-01-17 |
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