JPH0345907A - Plastic optical fiber having heat resistance - Google Patents
Plastic optical fiber having heat resistanceInfo
- Publication number
- JPH0345907A JPH0345907A JP1180523A JP18052389A JPH0345907A JP H0345907 A JPH0345907 A JP H0345907A JP 1180523 A JP1180523 A JP 1180523A JP 18052389 A JP18052389 A JP 18052389A JP H0345907 A JPH0345907 A JP H0345907A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- plastic optical
- formula
- polycarbonate
- heat resistance
- 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.)
- Pending
Links
- 239000013308 plastic optical fiber Substances 0.000 title claims abstract description 20
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 18
- 239000004417 polycarbonate Substances 0.000 claims abstract description 18
- 239000011162 core material Substances 0.000 claims abstract description 12
- 125000001309 chloro group Chemical group Cl* 0.000 claims abstract description 3
- 125000001153 fluoro group Chemical group F* 0.000 claims abstract description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052801 chlorine Inorganic materials 0.000 claims abstract 2
- 229910052731 fluorine Inorganic materials 0.000 claims abstract 2
- 239000000126 substance Substances 0.000 claims 1
- -1 polysiloxane Polymers 0.000 abstract description 17
- 125000000217 alkyl group Chemical group 0.000 abstract description 3
- 229920001577 copolymer Polymers 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 abstract description 2
- 229920001296 polysiloxane Polymers 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 6
- 239000004926 polymethyl methacrylate Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000306 polymethylpentene Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- BDCSAEPSPIEGAV-UHFFFAOYSA-N 2,6-dibromo-4-[2-(3,5-dibromo-4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropan-2-yl]phenol Chemical compound C1=C(Br)C(O)=C(Br)C=C1C(C(F)(F)F)(C(F)(F)F)C1=CC(Br)=C(O)C(Br)=C1 BDCSAEPSPIEGAV-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical class CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は高い耐熱性を有するプラスチック光ファイバに
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a plastic optical fiber having high heat resistance.
（従来の技術）
従来、光を伝送するファイバは、石英ガラスやプラスチ
ックより作られている。石英ガラス系光ファイバは低損
失であるため、長距離伝送用として現在広く使われてい
る。プラスチック光ファイバの伝送損失は石英ガラスの
物に比べると大きいものの、可撓性が良く、軽量でしか
も加工がしやすいため、単距離伝送用として電子機器等
に使用されている。(Prior Art) Conventionally, fibers for transmitting light have been made of quartz glass or plastic. Silica glass optical fibers have low loss and are currently widely used for long-distance transmission. Although the transmission loss of plastic optical fibers is greater than that of quartz glass fibers, they are flexible, lightweight, and easy to process, so they are used in electronic equipment and the like for short-distance transmission.
現在実用化されているプラスチック光ファイバの多くは
芯材（コア材）が透明性のよいポリ（メタクリル酸メチ
ル）で構成されているが、ポリ（メタクリル酸メチル）
のガラス転移点は１００℃程度であるため、これらのプ
ラスチック光ファイバは高温となる（例えば１５０℃以
上）自動車のエンジンルーム内で自動車の制御信号伝送
用として使用することができない。Most of the plastic optical fibers currently in practical use have a core material made of highly transparent poly(methyl methacrylate), but poly(methyl methacrylate)
Since the glass transition point of plastic optical fibers is about 100° C., these plastic optical fibers cannot be used for transmitting control signals of automobiles in the engine room of automobiles where the temperature is high (for example, 150° C. or higher).
そこでプラスチック光ファイバの耐熱温度を向上させる
ため種々の試みがされている。例えばポリ（メタクリル
酸メチル）の耐熱性を向上させるため、メタクリル酸メ
チルとＮ−アリールマレイミドを共重合する方法（特公
昭４３−９７５３号）、ポリ（メタクリル酸メチル〉の
一部をイミド化する方法（特開昭６０−１８４２１２号
、特開昭６０−１８５９０５号〉、メタクリル酸メチル
とα−メチルスチレンを共重合させる方法等の試みがな
されている。また近年ポリ（メタクリル酸メチル）以外
の芯材としてポリカーボネートが用いられるようになっ
てきた。（特開昭５７−４６２０４号、特開昭６１−６
６０４号）。Therefore, various attempts have been made to improve the heat resistance of plastic optical fibers. For example, in order to improve the heat resistance of poly(methyl methacrylate), there is a method of copolymerizing methyl methacrylate and N-arylmaleimide (Japanese Patent Publication No. 43-9753), and a method of imidizing a part of poly(methyl methacrylate). Attempts have been made to copolymerize methyl methacrylate and α-methylstyrene (JP-A-60-184212, JP-A-60-185905), and in recent years, methods other than poly(methyl methacrylate) Polycarbonate has come to be used as a core material.
No. 604).
（発明が解決しようとする課題）
しかしながら従来用いられていたポリカーボネートで作
られたプラスチック光ファイバでも耐熱温度が１２５℃
程度であり、自動車のエンジンルーム内のような高温に
耐えるものではなかった。(Problem to be solved by the invention) However, even the conventionally used plastic optical fiber made of polycarbonate has a heat resistance temperature of 125°C.
It was not able to withstand the high temperatures found in the engine room of a car.
本発明の目的は耐熱性に優れたプラスチック光ファイバ
を提供することにある。An object of the present invention is to provide a plastic optical fiber with excellent heat resistance.
（課題を解決するための手段）
本発明の上記の目的は、芯材が少なくとも１種の、一般
式
（式中、Ｘ、 、Ｘ２．Ｘ、及びｘ４は、炭素数が１以
上の、好ましくは１〜４のアルキル基、塩素原子、臭素
原子又はフッ素原子を示し、互いに同じでも異なってい
てもよい、）
で表わされる繰返し単位を有するポリカーボネートから
なることを特徴とするプラスチック光ファイバにより達
成された。(Means for Solving the Problems) The above-mentioned object of the present invention is such that the core material has at least one type of general formula (wherein X, , X2. represents 1 to 4 alkyl groups, chlorine atoms, bromine atoms, or fluorine atoms, and may be the same or different from each other. Ta.
本発明のプラスチック光ファイバの芯材に用いられるポ
リカーボネートは一般式（Ｉ）の構造を有する単独重合
体でも共重合体でもよい。共重合成分としては、一般式
（Ｉ）で表わされるが異なる構造のもの、下記の芳香族
ポリカーボネート成分（１）〜（５）など、また芳香族
ポリエステル、
ポリシロキサンなどがある。The polycarbonate used for the core material of the plastic optical fiber of the present invention may be a homopolymer or a copolymer having the structure of general formula (I). Copolymerizable components include those represented by the general formula (I) but with different structures, the following aromatic polycarbonate components (1) to (5), aromatic polyesters, polysiloxanes, and the like.
共重合成分の具体例
上記式中Ｙ、〜Ｙ４は水素原子、炭化水素基（例えば、
メチル基、エチル基、イソプロピル基など）、又はハロ
ゲン原子（ＣＩ２、Ｂｒなど）を示す。Specific examples of copolymerizable components In the above formula, Y and ~Y4 are hydrogen atoms, hydrocarbon groups (e.g.
methyl group, ethyl group, isopropyl group, etc.), or a halogen atom (CI2, Br, etc.).
本発明の芯材に用いられるポリカーボネートにおいて一
般式（Ｉ）で表わされる繰返し単位の含有率は、好まし
くは４０重量％以上である。The content of repeating units represented by formula (I) in the polycarbonate used in the core material of the present invention is preferably 40% by weight or more.
本発明において芯材に用いられる側鎖にＣ忍、Ｂｒを有
するポリカーボネートは側鎖が水素原子のみのものに比
べ高い屈折率を有しており、１．５５以上の値を有する
。したがって開口係数が増加し、さや材（クラツド材）
の選択の幅が大きくなる。The polycarbonate having C and Br in the side chain used for the core material in the present invention has a refractive index higher than that of a polycarbonate having only hydrogen atoms in the side chain, and has a value of 1.55 or more. Therefore, the aperture coefficient increases and the sheath material (clad material)
The range of choices will increase.
本発明のプラスチック光ファイバに用いられるさや材と
してはフッ素系樹脂（例えば、テトラフルオロエチレン
、フッ化ビニリデン、六フッ化プロピレン等の単独重合
体又は共重合体など）、また、ポリメチルペンテン系ポ
リマー、イミド化あるいは脱水メタクリル酸系ポリマー
、長鎖アルキル鎖を有するアクリル系化合物、あるいは
繰返し単位
を有するものなど屈折率の比較的小さいポリカーボネー
トなどを用いることができる。The sheath material used in the plastic optical fiber of the present invention may be a fluororesin (for example, a homopolymer or copolymer of tetrafluoroethylene, vinylidene fluoride, propylene hexafluoride, etc.), or a polymethylpentene polymer. , an imidized or dehydrated methacrylic acid polymer, an acrylic compound having a long alkyl chain, or a polycarbonate having a relatively low refractive index such as one having a repeating unit.
本発明のプラスチック光ファイバを紡糸する際、樹脂の
ガラス転移点が高いため従来より高温を必要とする。す
なわちポリ（メタクリル酸メチル）樹脂の場合は２４０
℃程度であったが、３００℃以上程度まで温度を上げる
必要がある。When spinning the plastic optical fiber of the present invention, a higher temperature than before is required because the resin has a high glass transition point. In other words, in the case of poly(methyl methacrylate) resin, it is 240
The temperature was about 300°C, but it is necessary to raise the temperature to about 300°C or more.
その他の点は常法に従って紡糸ができる。Other points can be spun according to conventional methods.
（実施例） 次に本発明を実施例に基づきさらに詳細に説明する。(Example) Next, the present invention will be explained in more detail based on examples.
実施例１〜８
第１表に示すようにビスフェノールＡ成分としてテトラ
ブロモビスフェノールＡＦ、テトラクロロビスフェノー
ルＡＦ、テトラフルオロビスフェノールＡＦ又はテトラ
メチルビスフェノールＡＦを用いてホスゲン法でポリカ
ーボネートを合成した。得られたポリカーボネートの熱
変形温度は２００℃〜２４０℃であり、屈折率は１．５
０〜１．６０であった。平均分子量は約２０，０００と
した。このポリカーボネートを無酸素状態で、溶融部分
の温度が３００℃以上の二重押出し機に供給した。一方
クラッド材であるＦＥＰ （ポリフッ化エチレンプロピ
レン）またはポリ（４−メチルペンテン−１）も二重押
出し機に供給した。Examples 1 to 8 As shown in Table 1, polycarbonates were synthesized by the phosgene method using tetrabromobisphenol AF, tetrachlorobisphenol AF, tetrafluorobisphenol AF, or tetramethylbisphenol AF as the bisphenol A component. The resulting polycarbonate has a heat distortion temperature of 200°C to 240°C and a refractive index of 1.5.
It was 0 to 1.60. The average molecular weight was approximately 20,000. This polycarbonate was fed under oxygen-free conditions to a double extruder with a melting section temperature of 300° C. or higher. On the other hand, the cladding material FEP (polyfluorinated ethylene propylene) or poly(4-methylpentene-1) was also fed to the double extruder.
これら二重押出し機に供給されたコア材とクラツド材は
紡糸口金を介して押し出された。押し出され得られたフ
ァイバは冷却後巻取られた。光ファイバのコア径は約８
００μｍ、クラッド厚はｌ ００．ａ ｍであった。損
失測定は７７０ｎｍＬＥＤ光源を用いて１２ｍ／２ｍカ
ットバック法で行いｌｋｍでの初期損失値に換算して求
めた。The core material and cladding material fed into these double extruders were extruded through a spinneret. The extruded fiber was cooled and then wound. The core diameter of the optical fiber is approximately 8
00 μm, cladding thickness is l 00. It was am. The loss was measured using a 12m/2m cutback method using a 770 nm LED light source, and was calculated by converting it into an initial loss value in 1 km.
耐熱性を比較するためファイバ１０ｍを１５０℃で５日
間、暴露した後も再び１０ｍ／２ｍカットバックで損失
値を測定した。この結果を第１表に示す。In order to compare the heat resistance, 10 m of the fiber was exposed to 150° C. for 5 days, and then the loss value was measured again with a 10 m/2 m cutback. The results are shown in Table 1.
比較例１及び２
ビスフェノールＡ成分として第１表に示す出発原料を用
いた以外は実施例１と同様にしてホスゲン法によりポリ
カーボネートを合成してコア材とした。これの平均分子
量を約２０，０００とした。これを用いて実施例１と同
様にして、光ファイバを製造し、試験を行った。その結
果を第１表に示す。Comparative Examples 1 and 2 Polycarbonate was synthesized as a core material by the phosgene method in the same manner as in Example 1 except that the starting materials shown in Table 1 were used as the bisphenol A component. The average molecular weight of this was approximately 20,000. Using this, an optical fiber was manufactured and tested in the same manner as in Example 1. The results are shown in Table 1.
第１表の結果から明らかなように、本発明のプラスチッ
ク光ファイバは比較例に比べ、１５０℃で５日間の熱処
理後の損失値で示される耐熱性が優れる。As is clear from the results in Table 1, the plastic optical fiber of the present invention has superior heat resistance as shown by the loss value after heat treatment at 150° C. for 5 days, compared to the comparative example.
（発明の効果）
本発明の、プラスチック光ファイバはポリカーボネート
あるいはポリカーボネート共重合体を芯材として用いる
ことにより、・高い開口係数を有し、しかも耐熱性が優
れる。(Effects of the Invention) By using polycarbonate or a polycarbonate copolymer as a core material, the plastic optical fiber of the present invention has a high aperture coefficient and excellent heat resistance.
Claims (1)
が１以上のアルキル基、塩素原子、臭素原子又はフッ素
原子を示し、互いに同じでも異なっていてもよい。） で表わされる繰返し単位を有するポリカーボネートから
なることを特徴とするプラスチック光ファイバ。[Claims] At least one type of core material has a general formula ▲ Numerical formula, chemical formula, table, etc. ▼...(I) (In the formula, X_1, X_2, X_3 and A plastic optical fiber characterized in that it is made of polycarbonate and has a repeating unit represented by the following formula: a group, a chlorine atom, a bromine atom, or a fluorine atom, which may be the same or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1180523A JPH0345907A (en) | 1989-07-14 | 1989-07-14 | Plastic optical fiber having heat resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1180523A JPH0345907A (en) | 1989-07-14 | 1989-07-14 | Plastic optical fiber having heat resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0345907A true JPH0345907A (en) | 1991-02-27 |
Family
ID=16084757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1180523A Pending JPH0345907A (en) | 1989-07-14 | 1989-07-14 | Plastic optical fiber having heat resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345907A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001010805A1 (en) * | 1999-08-03 | 2001-02-15 | Daikin Industries, Ltd. | Bis(4-hydroxy-3-perfluoroalkylphenyl)fluoroalkane derivatives and process for the preparation thereof |
-
1989
- 1989-07-14 JP JP1180523A patent/JPH0345907A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001010805A1 (en) * | 1999-08-03 | 2001-02-15 | Daikin Industries, Ltd. | Bis(4-hydroxy-3-perfluoroalkylphenyl)fluoroalkane derivatives and process for the preparation thereof |
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