JPH0794336B2 - UV curable resin coated optical fiber - Google Patents
UV curable resin coated optical fiberInfo
- Publication number
- JPH0794336B2 JPH0794336B2 JP61064446A JP6444686A JPH0794336B2 JP H0794336 B2 JPH0794336 B2 JP H0794336B2 JP 61064446 A JP61064446 A JP 61064446A JP 6444686 A JP6444686 A JP 6444686A JP H0794336 B2 JPH0794336 B2 JP H0794336B2
- Authority
- JP
- Japan
- Prior art keywords
- curable resin
- optical fiber
- yield point
- ultraviolet curable
- elongation
- 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 - Fee Related
Links
- 229920005989 resin Polymers 0.000 title claims description 48
- 239000011347 resin Substances 0.000 title claims description 48
- 239000013307 optical fiber Substances 0.000 title claims description 37
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 238000005452 bending Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 6
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Description
【発明の詳細な説明】 〔発明の概要〕 光フアイバの被覆材料として、降伏点伸びが10％以上ま
たは顕著な降伏点を有しない紫外線硬化樹脂を用いるこ
とにより、光フアイバの屈曲試験において、降伏点伸び
の小なる紫外線硬化樹脂被覆光フアイバに比し、光フア
イバの破断に至る回数が２乃至３桁以上向上し、曲げ特
性を飛躍的に改善した紫外線硬化樹脂被覆光フアイバ。DETAILED DESCRIPTION OF THE INVENTION [Outline of Invention] By using an ultraviolet curable resin having a yield point elongation of 10% or more or having no remarkable yield point as a coating material for an optical fiber, a yield test is performed in an optical fiber bending test. Compared with an optical fiber coated with an ultraviolet curable resin having a small point elongation, the number of times the optical fiber breaks is improved by 2 to 3 digits or more, and the bending property is dramatically improved.
本発明は紫外線硬化樹脂により被覆を施した光フアイバ
に関し、とくに紫外線硬化樹脂被覆を改良した曲げ特性
の優れた紫外線硬化樹脂被覆光フアイバに関するもので
ある。The present invention relates to an optical fiber coated with an ultraviolet curable resin, and more particularly to an optical fiber coated with an ultraviolet curable resin, which is an improved ultraviolet curable resin coating and has excellent bending characteristics.
光フアイバの強度を保持するため被覆を施す被覆材料と
して紫外線硬化樹脂が用いられている。紫外線硬化樹脂
は、従来用いられてきた熱硬化樹脂で、たとえば熱硬化
シリコン樹脂に比べて硬化速度が速く、製造速度の向上
が期待され、光フアイバの低価格化に有効である。An ultraviolet curable resin is used as a coating material for coating to maintain the strength of the optical fiber. The ultraviolet curable resin is a thermosetting resin that has been conventionally used, and has a higher curing rate than, for example, a thermosetting silicone resin, and is expected to improve the manufacturing rate, and is effective for lowering the cost of optical fibers.
従来の光フアイバ被覆用紫外線硬化樹脂は、一般に、破
断点伸びは所定の大きさ以上だが、降伏点の伸びが５〜
８％程度と小さい樹脂材料を用いるのが通常で、この種
の紫外線硬化樹脂被覆光フアイバは、熱硬化シリコン樹
脂を内層被覆とし、その外周にナイロン−12を外層被覆
とした光フアイバに比べると、曲げ特性（耐屈曲特性）
に劣るという問題がある。Conventional ultraviolet curable resins for coating optical fibers generally have an elongation at break of a predetermined value or more, but an elongation at yield of 5 to 5
A resin material as small as 8% is usually used, and this type of UV-curable resin-coated optical fiber has a thermosetting silicone resin as the inner layer coating, and nylon-12 as the outer layer coating on the outer periphery compared to the optical fiber. , Bending characteristics (bending resistance)
Is inferior to.
本発明は従来の問題点を解決し、紫外線硬化樹脂被覆光
フアイバの信頼性を高めるため、降伏点伸びが10％以上
の大きな特性または、さらに顕著な降伏点を有しない特
性の紫外線硬化樹脂による被覆を施した構成を特徴とす
る。The present invention solves the conventional problems and enhances the reliability of the optical fiber coated with the ultraviolet curable resin, so that the yield point elongation is 10% or more, or the ultraviolet curable resin has a characteristic that does not have a remarkable yield point. It is characterized by a coated structure.
本発明は、降伏点伸びが10％以上の大きな特性、さらに
顕著な降伏点を有しない紫外線硬化樹脂を光ファイバ被
覆材としたことにより、破断点伸びは所定の大きさ以上
だが、降伏点伸びの小さい紫外線樹脂被覆光フアイバに
比し、光フアイバの曲げ特性が、光フアイバの連続繰返
し屈曲試験による光フアイバの破断に至る回数において
２乃至３桁以上向上することが確認された。以下実施例
について説明する。The present invention has a large yield point elongation of 10% or more, and by using an ultraviolet curable resin having no remarkable yield point as an optical fiber coating material, the elongation at break is a predetermined value or more, but the yield point elongation is It was confirmed that the bending characteristics of the optical fiber were improved by 2 to 3 digits or more in the number of times until the optical fiber was broken by the continuous repeated bending test of the optical fiber, as compared with the ultraviolet resin-coated optical fiber having a small size. Examples will be described below.
第１図に本発明の紫外線硬化樹脂被覆光フアイバの断面
構造を示す。１は石英系の光フアイバ、２は被覆内層を
形成する膜厚80μｍの紫外線硬化樹脂ソフト層、３は被
覆外層を形成する膜厚60μｍの紫外線硬化樹脂ハード層
である。FIG. 1 shows a sectional structure of an optical fiber coated with an ultraviolet curable resin of the present invention. Reference numeral 1 is a silica-based optical fiber, 2 is a UV-curable resin soft layer having a film thickness of 80 μm which forms an inner coating layer, and 3 is a UV-curable resin hard layer having a film thickness of 60 μm which forms an outer coating layer.
第２図は、降伏点が顕著な紫外線硬化樹脂被覆光フアイ
バから光フアイバを引き抜いた紫外線硬化樹脂被覆の応
力−ひずみ特性を例示したもので、降伏点A,破断点Ｂの
状態を示すものである。また、第３図は、降伏点が認め
られない紫外線硬化樹脂被覆光フアイバから、光フアイ
バを引き抜いた紫外線硬化樹脂被覆の応力〜ひずみ特性
を例示したものである。FIG. 2 illustrates the stress-strain characteristics of the ultraviolet curable resin coating obtained by pulling out the optical fiber from the ultraviolet curable resin coated optical fiber having a remarkable yield point, showing the states of the yield point A and the break point B. is there. Further, FIG. 3 illustrates the stress-strain characteristics of the ultraviolet curable resin coating obtained by pulling out the optical fiber from the ultraviolet curable resin coated optical fiber having no yield point.
第１図に示した構造で、降伏点伸びが５％,8％,11％,15
％，降伏点無しの５種の特性の紫外線硬化樹脂からなる
被覆を施した光フアイバ試料Ｉ〜Ｖを作成し、試料Ｉ〜
Ｖのそれぞれについて、径4mmφのマンドレルにより２
秒周期で屈曲試験を行い、光フアイバが破断に至る回数
を調べた。With the structure shown in Fig. 1, the yield point elongation is 5%, 8%, 11%, 15
%, An optical fiber sample I to V coated with an ultraviolet curable resin having five characteristics with no yield point was prepared.
2 for each V with a mandrel with a diameter of 4 mm
A bending test was conducted at a cycle of seconds to examine the number of times the optical fiber was broken.
次表に屈曲試験の結果と、紫外線硬化樹脂被覆の降伏点
伸びとの関係を示す。また、参考までに、破断点伸び
（破断点までの伸び）も示す。The following table shows the relationship between the bending test results and the yield point elongation of the UV curable resin coating. For reference, elongation at break (elongation to break) is also shown.
なお上表において、紫外線硬化樹脂被覆の降伏点伸び
は、紫外線硬化樹脂被覆を引張り速度50mm/minで測定し
たものである。 In the above table, the yield point elongation of the ultraviolet curable resin coating is measured at a tensile speed of 50 mm / min for the ultraviolet curable resin coating.
表示した結果から明らかなように、降伏点伸びが10％以
上の紫外線硬化樹脂により被覆を施すことにより、本発
明の紫外線硬化樹脂被覆光フアイバの曲げ特性が従来の
もの（破断点伸びは所定の大きさ以上だが、降伏点伸び
は小さいもの）に比べ顕著に改善されている。また、顕
著な降伏点を有しない紫外線硬化樹脂により被覆を施し
た光ファイバは、更に有効である。As is clear from the displayed results, by applying a coating with an ultraviolet curable resin having a yield point elongation of 10% or more, the ultraviolet ray curable resin-coated optical fiber of the present invention has a conventional bending property (elongation at break is a predetermined value). It is more than the size, but the yield point elongation is small). Further, an optical fiber coated with an ultraviolet curable resin having no remarkable yield point is more effective.
本発明に係る被覆材の紫外線硬化樹脂としては、ウレタ
ンアクリレート、エポキシアクリレート、ブタジエンア
クリレート、ポリエステルアクリレート、シリコンアク
リレートなどを主成分した降伏点伸びが10％以上の大き
な樹脂材、または、顕著な降伏点が認められない樹脂材
が適用される。The ultraviolet curing resin of the coating material according to the present invention, urethane acrylate, epoxy acrylate, butadiene acrylate, polyester acrylate, a large resin material having a yield point elongation of 10% or more, which is a main component, or a remarkable yield point. Resin materials that are not recognized are applied.
以上述べたように本発明の紫外線硬化樹脂被覆光フアイ
バは、被覆材の紫外線硬化樹脂の降伏点伸びが10％以上
の大きなもの、または好ましくは顕著な降伏点を有しな
いものを適用する構成により、従来のもの（破断点伸び
は所定の大きさ以上だが、降伏点伸びは小さいもの）に
比べ、曲げ特性（屈曲特性）が格段に向上し、その効果
大である。As described above, the ultraviolet-curable resin-coated optical fiber of the present invention has a large yield point elongation of the ultraviolet-curable resin of the coating material of 10% or more, or preferably has a constitution that does not have a remarkable yield point. The bending property (flexing property) is remarkably improved as compared with the conventional one (the elongation at break is not less than a predetermined value but the elongation at yield is small), which is a large effect.
第１図は本発明の紫外線硬化樹脂被覆光フアイバの断面
構造図、第２図は降伏点が顕著な光フアイバの紫外線硬
化樹脂被覆の応力〜ひずみ特性例であり、第３図は、降
伏が認められない光ファイバの紫外線硬化樹脂被覆の応
力〜ひずみ特性例である。 １……光フアイバ、２……紫外線硬化樹脂ソフト層、３
……紫外線硬化樹脂ハード層FIG. 1 is a cross-sectional structural view of an optical fiber coated with an ultraviolet curable resin of the present invention, FIG. 2 is an example of stress-strain characteristics of an ultraviolet curable resin coating of an optical fiber having a remarkable yield point, and FIG. It is an example of the stress-strain characteristics of the ultraviolet curable resin coating of the optical fiber which is not recognized. 1 ... Optical fiber, 2 ... UV curable resin soft layer, 3
... Hard layer of UV curable resin
Claims (2)
樹脂被覆を施してなる光ファイバにおいて、 前記紫外線硬化樹脂被覆は降伏点伸びが10％以上の紫外
線硬化樹脂からなることを特徴とする紫外線硬化樹脂被
覆光ファイバ。1. An optical fiber having two layers of a UV-curable resin coating, a soft layer and a hard layer, wherein the UV-curable resin coating is made of a UV-curable resin having a yield point elongation of 10% or more. UV curable resin coated optical fiber.
樹脂被覆を施してなる光ファイバにおいて、 前記紫外線硬化樹脂被覆は降伏点を有しない紫外線硬化
樹脂からなることを特徴とする紫外線硬化樹脂被覆光フ
ァイバ。2. An optical fiber having two layers of a UV-curable resin coating, a soft layer and a hard layer, wherein the UV-curable resin coating is made of a UV-curable resin having no yield point. Resin coated optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61064446A JPH0794336B2 (en) | 1986-03-22 | 1986-03-22 | UV curable resin coated optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61064446A JPH0794336B2 (en) | 1986-03-22 | 1986-03-22 | UV curable resin coated optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62220910A JPS62220910A (en) | 1987-09-29 |
| JPH0794336B2 true JPH0794336B2 (en) | 1995-10-11 |
Family
ID=13258496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61064446A Expired - Fee Related JPH0794336B2 (en) | 1986-03-22 | 1986-03-22 | UV curable resin coated optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794336B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918124A (en) * | 1982-07-16 | 1984-01-30 | Mitsui Toatsu Chem Inc | Light-transmitting fiber |
| JPS59105602A (en) * | 1982-12-10 | 1984-06-19 | Kokusai Denshin Denwa Co Ltd <Kdd> | Fiber unit for optical submarine cable |
-
1986
- 1986-03-22 JP JP61064446A patent/JPH0794336B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62220910A (en) | 1987-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |