TWI253656B - Laminated mica tape for fire resisting wire - Google Patents

Laminated mica tape for fire resisting wire Download PDF

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TWI253656B
TWI253656B TW88106568A TW88106568A TWI253656B TW I253656 B TWI253656 B TW I253656B TW 88106568 A TW88106568 A TW 88106568A TW 88106568 A TW88106568 A TW 88106568A TW I253656 B TWI253656 B TW I253656B
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Taiwan
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mica
assembly
thickness
mum
mica tape
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TW88106568A
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Chinese (zh)
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Shuichi Yura
Toshihiko Ikeda
Masaharu Hieda
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Okabe Mica Kogyosho Kk
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Abstract

To reduce weight and improve high-temperature insulating characteristic, without increasing the number of turns or the thickness by setting the substantial average thickness of mica flakes constituting a laminated mica part to a specified value or less. As mica flakes 3 constituting a laminated mica part 2, those crushed by a crusher capable of remarkably finely crushing natural mica or synthetic mica with a substantial average particle size of 45-170 mum are used. The substantial average thickness of the mica flakes 3 is set to 2 mum (0.1-2 mum) or less. Since the high-temperature insulating characteristic is sharply improved according to this, the number of turns onto a conductor circumference can be minimized. Thus, the outer diameter of the resulting fire resisting wire can be minimized to reduce the weight, and the manufacturing cost can be also reduced. Furthermore, the airtightness of the reconstituted mica part 2 is improved, so that the penetration of a cracked gas causing reduction in insulation in a high-temperature insulation test can be strongly prevented.

Description

1253656 Α7 Β7 經濟部智慧財產局員工消費合作社印製 五、發明說明(4) 雲母帶的捲繞圈數之方法。 但此方法,兩者同時會增大耐火電線的外徑,違背前 述輕量化要求的同時,還具有製造成本高價之缺點。 本發明乃著眼於上述之點的發明,其目的在於藉由變 薄構成總成雲母部的雲母鱗片厚度,提供一可耐前述高電 壓之耐火電線用總成雲母帶,藉此達到耐火電線的輕量化 與提升高溫絕緣特性。 〔用以解決課題之手段〕 本發明爲達成上述目的,針對在抄造粉碎天然雲母或 合成雲母而得到的雲母鱗片所形成的總成雲母部,以矽樹 脂等做爲接著劑,而予以貼合玻璃布補強材而成的耐火絕 電線用總成雲母帶,其特徵爲: 將構成前述總成雲母部的雲母鱗片的實際平均厚度, 做成2 β m以下。 〔發明之實施形態〕 以下,按所附圖面,詳細說明關於本發明之實施例。 第1圖係表示利用本發明的耐火電線用總成雲母帶構 成之斷面圖,第2圖係第1圖所示之X:箭頭所示部之放大 斷面圖。 然後,圖中符號分別表示,1係總成雲母帶,2係總 成雲母部,3係雲母鱗片,4係玻璃布等補強材,5係矽 樹脂等接著劑。 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) "" (請先閱讀背面之注意事 I 寫丄 寫本頁) 訂--------- 1253656 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明(5) 〔第1實施例〕 接著詳細說明關於本發明之第1實施例。 第1圖所示的總成雲母帶1的構成,乃爲在抄造粉碎 天然雲母或合成雲母而得到的雲母鱗片3所形成的總成雲 母部2的下面,利用矽樹脂等接著劑5,貼合玻璃布等補 強材4的構造,此構造實際上與第3圖所示的習知構造實 施上相同,同時,其總成雲母帶1的總成雲母部2的厚度 h i,約爲1 〇 5 // m,因利用接著劑5所貼合的玻璃布等 補強材4的厚度h2約爲3 5 //m,所以其總成雲母帶1的 厚度Η約爲1 4 0 // m,亦與習知者厚度同。 於是,構成本發明第1實施例的總成雲母部2的雲母 鱗片3,乃利用粉碎機,將天然雲母或合成雲母粉碎的比 習知更顯著的微細碎粉,其雲母鱗片3的實際平均粒徑d 爲45至1 70ym,若取其平均値,粒徑d爲1 20 Mm (再者,本說明書記載爲「實際平均粒徑d爲1 7 0 //m」,意思爲「實際粒徑d爲17〇//m以上者約 1/2,實際粒徑d未滿170 μ m者約1/2」一以下 同)。 又,同一雲母鱗片3的實際平均厚度t爲0 · 1至 2//m,若取其平均値,厚度t爲1 · Οζ/m (再者,本 說明書記載爲「實際平均厚度t爲2 /zm」,意思爲「實 際厚度t爲2 以上者約1/2 ’實際厚度t未滿 2 // m.者約1/2」一以下同)。 1本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公_爱.) ^7¾ - --------訂---------^^^1. (請先閱讀背面之注意事項^^寫本頁) 1253656 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明(6) 於是,關於此總成雲母帶1的總成雲母部2的雲母鱗 片3的積層枚數η,若根據前述總成雲母部12的厚度hi = 105//m,其雲母鱗片13的平均厚度t = l .〇 Mm加以計算出的話,約爲1 〇 5枚。 於是,根據前述計算式(1 )加以計算,於第2圖虛 線所示的泄漏通路LP的話,LP = 6345/zm,比在 第3圖虛線所示的習知總成雲母部1 2的泄漏通路L P約 長 6 0 % 〇 因而,藉由使用本發明第1實施例的總成雲母帶1 , 即不會增加捲繞圈數,又不會增加厚度,還能提升高溫絕 緣電阻。 於是,使用本發明第1實施例的上述總成雲母帶1 , 與習知同樣地製作第5圖的試料A,對該試料A,與前述 者同樣地以電爐昇溫到8 4 0 °C,加以測定高溫絕緣電阻 的結果成爲0 · 6ΜΩ,所以比習知者的〇 · 4ΜΩ,還 要顯著的提升高溫絕緣電阻。 又,昇溫後,絕緣破壞電壓的測定結果,爲4 · 1 KV,所以若與習知的2 · 4KV做比較,會大幅地提升 〇 〔第2實施例〕 接著說明關於本發明之第2實施例。 然而,本發明第2實施例與第1實施例之不同處只在 於’第1圖所示的總成雲母部2的厚度hi,針對第1實施 (請先閱讀背面之注意事項3寫本頁) 寫女 1111111 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) ¥ 1253656 A7 B7 五、發明說明(7 ) 例約爲1 〇 5 //m,第2實施例約爲6 5 之點,其他 構成與第1實施例同。 於是,本發明第2實施例,第1圖所示的總成雲母部 2的hi約爲6 5 /zm,而利用接著劑5所貼合的補強材4 的h 2,乃與第1實施例同樣地約爲3 5 // m,所以其總成 雲母帶1的厚度Η約爲l〇〇//m。 然而,構成該總成雲母部2的雲母鱗片3的實際平均 粒度d爲1 2 0 //m,同一雲母鱗片3的實際平均厚度t 爲1 之點也與第1實施例同,但關於總成雲母部2, 其雲母鱗片3的積層枚數η,若根據前述總成雲母部2的 厚度1^=65/^111,其雲母鱗片3的平均厚度t = l · 0 // m而切割加以計算出的話,約爲6 5枚。 於是,關於第2實施例的總成雲母部2,若根據前述 計算式(1 )計算出第2圖虛線所示的泄漏通路L P爲 (請先閱讀背面之注意事 項 寫丄 寫本頁) 經濟部智慧財產局員工消費合作社印製1253656 Α7 Β7 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing 5, invention description (4) method of winding the number of mica tape winding. However, in this method, both of them increase the outer diameter of the refractory wire, which is contrary to the above-mentioned lightweighting requirements, and has the disadvantage of high manufacturing cost. The present invention has been made in view of the above-mentioned points, and an object thereof is to provide a mica tape for a fire-resistant electric wire which can withstand the aforementioned high voltage by thinning the thickness of a mica flake which constitutes a mica portion of the assembly, thereby achieving a fire resistant electric wire. Lightweight and enhance high temperature insulation properties. [Means for Solving the Problem] In order to achieve the above object, the present invention is directed to an assembly mica formed by mica scales obtained by pulverizing natural mica or synthetic mica, and is bonded with an anthracene resin or the like as an adhesive. An assembly mica tape for a refractory wire made of a glass cloth reinforcing material, characterized in that the actual average thickness of the mica scales constituting the mica portion of the assembly is 2 β m or less. [Embodiment of the Invention] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a cross-sectional view showing a composite mica tape for a fire-resistant electric wire according to the present invention, and Fig. 2 is an enlarged cross-sectional view showing a portion indicated by an arrow X in the first drawing. Then, the symbols in the figure indicate the 1 series assembly mica tape, the 2 series assembly mica, the 3 series mica scales, the 4 series glass cloth and other reinforcing materials, and the 5 series resin and other adhesives. This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) "" (Please read the note on the back first, write this page) Order --------- 1253656 A7 B7 Ministry of Economic Affairs Intellectual Property Office Employees Consumer Cooperatives Printing 5, Invention Description (5) [First Embodiment] Next, a first embodiment of the present invention will be described in detail. The structure of the assembly mica tape 1 shown in Fig. 1 is a lower surface of the mica portion 2 formed by mica scales 3 obtained by pulverizing natural mica or synthetic mica, and is adhered by an adhesive 5 such as enamel resin. The structure of the reinforcing material 4 such as a glass cloth is substantially the same as the conventional structure shown in Fig. 3, and the thickness hi of the assembly mica 2 of the assembly mica tape 1 is about 1 〇. 5 // m, since the thickness h2 of the reinforcing material 4 such as the glass cloth adhered by the adhesive 5 is about 3 5 //m, the thickness of the assembly mica tape 1 is about 1 4 0 // m, It is also the same thickness as the conventional. Then, the mica scale 3 constituting the assembly mica 2 of the first embodiment of the present invention is a finely divided fine powder of natural mica or synthetic mica pulverized by a pulverizer, and the actual average of the mica scale 3 The particle diameter d is 45 to 170 μm, and if the average enthalpy is taken, the particle diameter d is 1 20 Mm (further, the present specification describes "the actual average particle diameter d is 1 70 //m", meaning "actual grain" When the diameter d is 17 〇//m or more, it is about 1/2, and the actual particle diameter d is less than 170 μm, which is about 1/2" or less). Moreover, the actual average thickness t of the same mica scale 3 is 0 · 1 to 2 / / m, and if the average enthalpy is taken, the thickness t is 1 · Οζ / m (again, this specification describes "the actual average thickness t is 2" /zm" means "the actual thickness t is 2 or more and is about 1/2'. The actual thickness t is less than 2 // m. It is about 1/2" or less). 1 paper size applies to China National Standard (CNS) A4 specification (210 X 297 public _ love.) ^73⁄4 - -------- order---------^^^1. (Please First read the notes on the back ^^ Write this page) 1253656 A7 B7 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing 5, invention description (6) So, the mica scales of the assembly mica 2 of this assembly mica tape 1 The number of laminated layers η of 3 is about 1 〇 5 if the average thickness t m of the mica scales 13 is calculated according to the thickness of the above-mentioned assembly mica 12, hi = 105 / / m. Then, based on the above calculation formula (1), LP = 6345/zm in the leakage path LP shown by the broken line in Fig. 2, which is smaller than the leakage of the conventional assembly mica 12 shown by the broken line in Fig. 3 The passage LP is about 60% long. Therefore, by using the assembly mica tape 1 of the first embodiment of the present invention, the number of winding turns is not increased, the thickness is not increased, and the high-temperature insulation resistance can be improved. Then, using the above-described assembly mica tape 1 of the first embodiment of the present invention, the sample A of FIG. 5 was produced in the same manner as in the prior art, and the sample A was heated to 840 ° C in an electric furnace in the same manner as the above. The result of measuring the high-temperature insulation resistance is 0 · 6 Μ Ω, so the high-temperature insulation resistance is remarkably improved than the conventional 〇 4 Μ Ω. In addition, after the temperature rise, the measurement result of the dielectric breakdown voltage is 4 · 1 KV, so that it is greatly improved when compared with the conventional 2 · 4 KV. [Second embodiment] Next, the second embodiment of the present invention will be described. example. However, the second embodiment of the present invention differs from the first embodiment only in the thickness hi of the assembly mica 2 shown in Fig. 1 for the first implementation (please read the back note 3 first) ) Write female 1111111 This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) ¥ 1253656 A7 B7 V. Invention description (7) Example is about 1 〇 5 //m, the second embodiment is about At the point of 6 5, the other configuration is the same as that of the first embodiment. Therefore, in the second embodiment of the present invention, the hi of the assembly mica 2 shown in Fig. 1 is about 6 5 /zm, and the h 2 of the reinforcing material 4 bonded by the adhesive 5 is the first embodiment. The same is about 3 5 // m, so the thickness of the assembly mica tape 1 is about l〇〇//m. However, the actual average particle size d of the mica scales 3 constituting the assembly mica 2 is 1 2 0 // m, and the actual average thickness t of the same mica scale 3 is 1 is the same as in the first embodiment, but Chengyun mother 2, the number of layers η of the mica scale 3, if the thickness of the mica scale 3 is 1^=65/^111 according to the thickness of the aforementioned mica scale 2, the average thickness of the mica scale 3 is t = l · 0 // m If it is calculated, it is about 65 pieces. Then, in the assembly mica 2 of the second embodiment, the leakage path LP indicated by the broken line in Fig. 2 is calculated based on the above calculation formula (1) (please read the back note on the front page) Ministry of Intellectual Property Bureau employee consumption cooperative printing

3 9 Ο 5 // m。 然後,使用本發明第2實施例的上述總成雲母帶1 , 與習知同樣地製作第5圖的試料A,且將該試料A,與前 述者同樣地,以電爐昇溫到8 4 0 °C,且加以測定其昇溫 中的高溫絕緣電阻的結果,本發明第2實施例,其總成雲 母部2的厚度hi,顯著的比習知者更薄也沒關係,雖略與 習知者同爲0 · 4 Μ Ω,但溫昇後,絕緣破壞電壓的測定 結果爲2 · 6KV,比習知還要大幅地提升。 下述表1係根據總成雲母帶的習知例、第1實施例及 第2實.施例的構成尺寸、泄漏通路及第5圖所示的試料A )·0- ·1111111« 鏵. 本纸張尺度適用中國國家標準(CNS)A4規格(210 X 297公t ) -10- 1253656 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明(8 ) ,表示昇溫中的高溫,絕緣電阻與昇溫後的絕緣破壞電壓的 測定値。 〔表1〕 單 位 習 知 例 本發明 第1實施例 第2實施例 雲母鱗片之平均粒徑(d) β m 300 120 120 雲母鱗片之平均厚度(t) β m 4 1.0 1.0 總成雲母部之厚度(hi) β m 105 105 65 玻璃布等補強材之厚度 (h2) β m 35 35 35 總成雲母帶之厚度 (H = hi + h2) β m 140 140 100 雲母鱗片之積層枚數 (n = hi/t) 枚 26 105 65 總成雲母部之泄漏通路 {LP = (n-l)d/2 + nt} β m 385 4 6345 3905 因第5圖所示的試料A的 昇溫中之高溫絕緣電阻 ΜΩ 0.5 0.6 0.5 因第5圖所示的試料A的 昇溫後之絕緣破壞電壓 KV 2.4 4.1 2.6 由上述表1即可明白,第1實施例者係表示,總成雲 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公爱.) -------訂------- (請先閱讀背面之注意事項 1¾¾寫本頁) 1253656 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明(9) 母部厚度hi與習知者相同,但泄漏通路L p比習知者更顯 著的提升’高溫絕緣電阻及昇溫後的絕緣破壞電壓,比習 知者更顯著的提升。 其次’本發明第2實施例者,乃因總成雲母部的厚度 hi相對於習知者爲1 〇 5 //m而言,第2實施例係爲6 5 // m,所以雖明顯的變薄也沒關係,泄漏通路及昇溫中的 高溫絕緣電阻,乃略與習知同,昇溫後的絕緣破壞電壓顯 示比習知者更加大幅地提升。 再者,於本發明第1實施例及第2實施例方面,作爲 第1圖所示的矽樹脂等接著劑5,乃可用環氧樹脂、醇酸 薄膜、聚醯亞胺、聚乙烯等取代矽樹脂(本說明書中統稱 該些爲「矽樹脂等」)。 而於本發明第1實施例及第2實施例方面,作爲第1 圖所示的玻璃布等補強材4,乃可用聚酯薄膜、聚酯不織 布、聚酯織布、聚醯胺薄膜、聚醯亞胺薄膜、聚乙烯等取 代玻璃布(本說明書中統稱該些爲「玻璃布等」)。 〔發明之效果〕 如以上說明可知,按本發明,藉由將總成雲母部的實 際平均厚度,以2 //m以下的雲母鱗片予以構成’即具有 如下所述的優異效果。 (彳)如上述本發明第1實施例,若將總成雲母部的 厚度做成與習知者相同,高溫絕緣特性則顯著的提升。 於是,捲繞在導體外周的圈數會比習知者少’藉此’ (請先閱讀背面之注意事項 寫本頁) 寫太 訂--------- 4 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公餐.) 1253656 A7 B7 五、發明說明(10) 即能縮小其耐火電線的外徑,達成輕量化的同時,還能降 低製造成本。 (口)如上述本發明第2實施例,即使將總成雲母部 的厚度,做得比習知者薄,高溫絕緣特性還是略與習知同 ,所以即使捲繞在導線外周的圈數與習知者同,還是能縮 小其耐火電線的外徑,藉此,完成其耐火電線輕量化的同 時,還能降低製造成本。 (八)按本發明的總成雲母帶,乃如前所述,其目的 在於:耐火電線的輕量化與高溫絕緣特性的提升,但如前 所述,將構成總成雲母部的雲母鱗片的實際平均厚度,做 成2 // m,藉此,提升其總成雲母部的氣密性,且能比習 知顯著的強力防止,在高溫絕緣試驗時造成降低絕緣原因 的分解氣體進入,所以能提升其高溫絕緣的耐久特性。 〔圖面之簡單說明〕 第1圖係表示本發明一實施例的總成雲母帶的構成之 斷面圖。 第2圖係第1圖所示的Xi箭頭所示部之放大斷面圖。 第3圖係表示習知此種總成雲母帶構成之斷面圖。 第4圖係第3圖所示的X2箭頭所示部之放大斷面圖。 第5圖係使用在耐火電線的高溫絕緣電阻試驗的試料 之一部分斷面側面圖。 〔符號.之說明〕 本纸張尺度適用中國國家標準(CNS)A4規格(210 X 297公t ) (請先閱讀背面之注意事 寫丄 ϋ ϋ ϋ I ϋ ϋ ϋ 一-口, ϋ ϋ ϋ ^1_ι ^1 ϋ I I 寫本頁) 經濟部智慧財產局員工消費合作社印製3 9 Ο 5 // m. Then, using the above-described assembly mica tape 1 of the second embodiment of the present invention, the sample A of Fig. 5 was produced in the same manner as in the prior art, and the sample A was heated to 8400 ° in an electric furnace in the same manner as the above. C, and as a result of measuring the high-temperature insulation resistance during temperature rise, in the second embodiment of the present invention, the thickness hi of the assembly mica 2 is remarkably thinner than the conventional one, and it is slightly the same as the conventional one. It is 0 · 4 Μ Ω, but after the temperature rise, the measurement result of the dielectric breakdown voltage is 2 · 6KV, which is greatly improved than the conventional one. The following Table 1 is a conventional example of the assembly mica tape, the constituent dimensions of the first embodiment and the second embodiment, the leak path, and the sample A shown in Fig. 5)·0-·1111111« 铧. This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 metric tons) -10- 1253656 A7 B7 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printing 5, invention description (8), indicating the high temperature in the heat, Measurement of insulation resistance and insulation breakdown voltage after temperature rise値. [Table 1] Unit Convention Example The average particle diameter of the mica scales of the second embodiment of the first embodiment of the present invention (d) β m 300 120 120 The average thickness of the mica scales (t) β m 4 1.0 1.0 The total mica portion Thickness (hi) β m 105 105 65 Thickness of reinforcing material such as glass cloth (h2) β m 35 35 35 Thickness of mica tape (H = hi + h2) β m 140 140 100 Number of layers of mica scales (n = hi/t) Leakage path of the 26 105 65 assembly mica {LP = (nl)d/2 + nt} β m 385 4 6345 3905 High temperature insulation resistance in the temperature rise of sample A shown in Fig. 5 ΜΩ 0.5 0.6 0.5 The dielectric breakdown voltage KV after the temperature rise of the sample A shown in Fig. 5 2.4 4.1 2.6 It can be understood from the above Table 1, the first embodiment shows that the assembly paper size is applicable to the Chinese national standard. (CNS) A4 specification (210 X 297 public.) ------- order ------- (Please read the note on the back 13⁄43⁄4 write this page) 1253656 A7 B7 Ministry of Economic Affairs Intellectual Property Office staff Printed by the Consumer Cooperatives. V. Description of the invention (9) The thickness of the mother is the same as that of the conventional one, but the leakage path L p is more significant than the conventional one. Temperature insulation resistance and dielectric breakdown voltage after heating, are more significant than the conventional lift. Next, the second embodiment of the present invention is because the thickness hi of the assembly mica is 1 〇 5 //m with respect to the conventional one, and the second embodiment is 6 5 // m, so that it is obvious. It does not matter if it is thinned, and the high-temperature insulation resistance in the leakage path and the temperature rise is similar to the conventional one, and the insulation breakdown voltage after the temperature rise is more greatly improved than the conventional one. Further, in the first embodiment and the second embodiment of the present invention, the adhesive 5 such as an anthracene resin shown in Fig. 1 may be replaced by an epoxy resin, an alkyd film, a polyimide, or a polyethylene. Anthracene resin (collectively referred to as "indene resin, etc." in this specification). In the first embodiment and the second embodiment of the present invention, as the reinforcing member 4 such as the glass cloth shown in Fig. 1, a polyester film, a polyester nonwoven fabric, a polyester woven fabric, a polyamide film, or a poly A bismuth imide film, polyethylene, or the like is substituted for the glass cloth (collectively referred to as "glass cloth, etc." in this specification). [Effects of the Invention] As described above, according to the present invention, the actual average thickness of the total mica portion is composed of mica scales of 2 // m or less, which has the excellent effects as described below. (彳) As in the first embodiment of the present invention described above, when the thickness of the mica portion of the assembly is made the same as that of the conventional one, the high-temperature insulation property is remarkably improved. Therefore, the number of turns wound around the outer circumference of the conductor will be less than that of the conventional ones. (Please read the notes on the back to write this page.) Write too--------- 4 This paper size applies to China. National Standard (CNS) A4 Specification (210 X 297 Meals.) 1253656 A7 B7 V. INSTRUCTIONS (10) The outer diameter of the fire-resistant wire can be reduced to achieve weight reduction while reducing manufacturing costs. (Port) As in the second embodiment of the present invention described above, even if the thickness of the mica portion of the assembly is made thinner than the conventional one, the high-temperature insulation property is slightly the same as that of the conventional one, so that the number of turns of the outer circumference of the wire is As is well known, the outer diameter of the fire-resistant wire can be reduced, thereby reducing the manufacturing cost while reducing the weight of the fire-resistant wire. (8) The assembly mica tape according to the present invention is as described above, and its purpose is to improve the weight of the fire-resistant electric wire and the high-temperature insulation property, but as described above, the mica scales constituting the mica portion of the assembly are The actual average thickness is made 2 / 2 m, thereby improving the airtightness of the mica portion of the assembly, and it is possible to prevent the decomposition gas from lowering the insulation factor during the high-temperature insulation test. It can improve the durability of its high temperature insulation. [Brief Description of the Drawing] Fig. 1 is a cross-sectional view showing the configuration of an assembly mica tape according to an embodiment of the present invention. Fig. 2 is an enlarged cross-sectional view showing a portion indicated by a arrow arrow shown in Fig. 1. Figure 3 is a cross-sectional view showing the structure of a conventional mica tape of this type. Fig. 4 is an enlarged cross-sectional view showing a portion indicated by an arrow X2 shown in Fig. 3. Fig. 5 is a partial cross-sectional side view of a sample used in a high-temperature insulation resistance test of a fire-resistant electric wire. [Description of Symbols] This paper size applies to China National Standard (CNS) A4 specification (210 X 297 metric tons) (Please read the note on the back first ϋ ϋ I ϋ ϋ ϋ 一-口, ϋ ϋ ϋ ^1_ι ^1 ϋ II Write this page) Printed by the Intellectual Property Office of the Ministry of Economic Affairs

Claims (1)

々、申請專利範圍 1 , 一種耐火電線用總成雲母帶,針對在抄造粉碎X 然雲母或合成雲母而得到的雲母鱗片所形成的總成雲母部 ,以矽樹脂等接著劑,貼合玻璃布等補強材而成之耐火電 線用總成雲母帶,其特徵爲: 將構成前述總成雲母部的雲母鱗片的實際平均厚度, 做成2 # m以下。 (請先閱讀背面之注意事填寫本頁) 裝· 訂 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS ) A4規格(210X297公釐)々, Patent Application No. 1, an assembly mica tape for fire-resistant electric wires, for the mica portion formed by mica scales obtained by pulverizing X-ray mica or synthetic mica An assembly mica tape for a fire-resistant electric wire made of a reinforcing material, which is characterized in that the actual average thickness of the mica scales constituting the mica portion of the assembly is made 2 or less. (Please read the note on the back of the page to fill out this page) Packing and binding Printed by the Ministry of Economic Affairs, Intellectual Property Office, Staff and Consumer Cooperatives This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm)
TW88106568A 1998-04-23 1999-04-23 Laminated mica tape for fire resisting wire TWI253656B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041391A1 (en) 2008-08-20 2010-01-14 Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg High strength bolt has bainite structure produced by austempering which extends across whole cross-section of the bolt and increases its tensile strength

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5047490B2 (en) * 2005-11-02 2012-10-10 日本バルカー工業株式会社 Spiral wound gasket
WO2017175397A1 (en) * 2016-04-08 2017-10-12 日立化成株式会社 Mica tape, cured product of mica tape, and insulating material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041391A1 (en) 2008-08-20 2010-01-14 Kamax-Werke Rudolf Kellermann Gmbh & Co. Kg High strength bolt has bainite structure produced by austempering which extends across whole cross-section of the bolt and increases its tensile strength

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