JPH01304145A - Water running-preventing water barrier material - Google Patents
Water running-preventing water barrier materialInfo
- Publication number
- JPH01304145A JPH01304145A JP63135832A JP13583288A JPH01304145A JP H01304145 A JPH01304145 A JP H01304145A JP 63135832 A JP63135832 A JP 63135832A JP 13583288 A JP13583288 A JP 13583288A JP H01304145 A JPH01304145 A JP H01304145A
- Authority
- JP
- Japan
- Prior art keywords
- water
- seawater
- isobutylene
- running
- absorbent
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 239000000463 material Substances 0.000 title claims abstract description 38
- 230000004888 barrier function Effects 0.000 title abstract description 5
- 239000013535 sea water Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 15
- 239000002250 absorbent Substances 0.000 claims abstract description 12
- 230000002745 absorbent Effects 0.000 claims abstract description 11
- 229920001577 copolymer Polymers 0.000 claims abstract description 11
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims abstract description 9
- 230000001070 adhesive effect Effects 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 6
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 6
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 6
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000003277 amino group Chemical group 0.000 claims abstract description 5
- 239000004202 carbamide Substances 0.000 claims abstract description 5
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 5
- 239000004640 Melamine resin Substances 0.000 claims abstract description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 4
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 4
- 239000007864 aqueous solution Substances 0.000 claims abstract description 4
- 150000003839 salts Chemical class 0.000 claims abstract description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 claims abstract description 3
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 8
- -1 alkali metal salt Chemical class 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical class [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical class [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 3
- 229920003169 water-soluble polymer Polymers 0.000 claims 2
- 239000013307 optical fiber Substances 0.000 abstract description 23
- 239000000203 mixture Substances 0.000 abstract description 5
- 230000003405 preventing effect Effects 0.000 abstract description 4
- 229910003202 NH4 Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 230000002265 prevention Effects 0.000 description 22
- 239000006096 absorbing agent Substances 0.000 description 14
- 239000000499 gel Substances 0.000 description 12
- 239000000835 fiber Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000002689 soil Substances 0.000 description 8
- 235000015110 jellies Nutrition 0.000 description 7
- 239000008274 jelly Substances 0.000 description 7
- 239000004745 nonwoven fabric Substances 0.000 description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 229920005549 butyl rubber Polymers 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 239000012209 synthetic fiber Substances 0.000 description 3
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 238000009835 boiling Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 1
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- IVIDDMGBRCPGLJ-UHFFFAOYSA-N 2,3-bis(oxiran-2-ylmethoxy)propan-1-ol Chemical compound C1OC1COC(CO)COCC1CO1 IVIDDMGBRCPGLJ-UHFFFAOYSA-N 0.000 description 1
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- HDPLHDGYGLENEI-UHFFFAOYSA-N 2-[1-(oxiran-2-ylmethoxy)propan-2-yloxymethyl]oxirane Chemical compound C1OC1COC(C)COCC1CO1 HDPLHDGYGLENEI-UHFFFAOYSA-N 0.000 description 1
- OECTYKWYRCHAKR-UHFFFAOYSA-N 4-vinylcyclohexene dioxide Chemical compound C1OC1C1CC2OC2CC1 OECTYKWYRCHAKR-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000011013 aquamarine Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- MLVSWIXRZNPEKF-UPHRSURJSA-N bis(oxiran-2-ylmethyl) (z)-but-2-enedioate Chemical compound C1OC1COC(=O)\C=C/C(=O)OCC1CO1 MLVSWIXRZNPEKF-UPHRSURJSA-N 0.000 description 1
- JRPRCOLKIYRSNH-UHFFFAOYSA-N bis(oxiran-2-ylmethyl) benzene-1,2-dicarboxylate Chemical compound C=1C=CC=C(C(=O)OCC2OC2)C=1C(=O)OCC1CO1 JRPRCOLKIYRSNH-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 150000001990 dicarboxylic acid derivatives Chemical class 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 238000006266 etherification reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は水走り防止性遮水材に関し、さらに詳しくは光
フアイバーケーブル内への海水の浸入を防止する遮水材
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water-shielding material that prevents water running, and more particularly to a water-shielding material that prevents seawater from entering into optical fiber cables.
近年、光フアイバーケーブルは地下に埋設されるケース
が増加しており、従来の充填材料の要求特性、つまり緩
衝性能や充填容易性とともに水走り防止性が重要視され
ている。In recent years, the number of optical fiber cables being buried underground has increased, and emphasis has been placed on the characteristics required of conventional filling materials, that is, the ability to prevent water run-in as well as buffering performance and ease of filling.
従来、水走りを防止する方法としては、ポリアクリル酸
系、カルボキシメチルセルロース系等のカルボキシル基
を含む吸水性ポリマー粉末をケーブル内部に充填し水走
り防止を図ることが試みられている。しかしながら、従
来知られているこれらのモノカルボン酸タイプの吸水性
ポリマーは純水に対する遮水性は良好であるが、海水等
の金属イオンを含む水に対しては遮水性能が不充分であ
った。Conventionally, attempts have been made to prevent water running by filling the inside of cables with water-absorbing polymer powder containing carboxyl groups, such as polyacrylic acid-based or carboxymethyl cellulose-based polymers. However, although these conventionally known monocarboxylic acid type water-absorbing polymers have good water-blocking properties against pure water, their water-blocking performance is insufficient against water containing metal ions such as seawater. .
また、特開昭５２−１５５２１８号公報にはカルボキシ
メチルセルロース系の高吸水繊維が報告されている。こ
のカルボキシメチルセルロース系高吸水繊維は被覆緩（
ｈ効果に優れ、ポリマーと同様に純水に対する遮水性は
良好であるが、海水等の金属イオンを含む水に対しては
遮水性能が不充分であり、さらに水に濡れた状態では短
期間で腐敗を生じ、炭酸ガス、水素ガス等を発生して分
解し水走り防止性が失われてしまうという欠点があった
。Furthermore, JP-A-52-155218 reports carboxymethylcellulose-based superabsorbent fibers. This carboxymethylcellulose-based superabsorbent fiber is loosely coated (
Although it has excellent water-shielding properties against pure water like polymers, its water-shielding performance is insufficient against water containing metal ions such as seawater, and it also lasts for a short period of time when wet. It has the disadvantage that it rots and decomposes, emitting carbon dioxide gas, hydrogen gas, etc., and loses its ability to prevent water running.
また、特開昭６２−１５３１８号公報にはアクリル系高
吸水繊維が報告されているが、モノカルボン酸タイプの
吸水繊維であるため、カルボキシメチルセルロース系高
吸水繊維と同様に被覆緩衝効果、純水に対する遮水性は
良好であるが、海水等の金属イオンを含む水に対しては
遮水性が不充分である。Furthermore, acrylic superabsorbent fibers have been reported in JP-A No. 62-15318, but since they are monocarboxylic acid type water-absorbing fibers, they have the same coating buffering effect as carboxymethyl cellulose superabsorbent fibers, and pure water However, the water barrier properties are insufficient for water containing metal ions such as seawater.
従来、海水に対して水走り防止性が良好なものとしては
、充填材料としてベトラム系やポリブテン系のゼリーを
用いる方法が行なわれている。このようなゼリーを充填
した従来の光フアイバーケーブルの一例を第２図に示す
。その構造は、最中心部にコアとして設けられたテンシ
ョンメンバー８と、その周りに配置された光フアイバー
心線テープｌと、その周りに水走り防止材料として充填
されたゼリー９と、さらにその周りに設けられたアルミ
テープ５および全体を被覆する外被層４とからなる。Conventionally, as a material having good water running prevention properties against seawater, a method has been used in which a vetram-based or polybutene-based jelly is used as a filling material. An example of a conventional optical fiber cable filled with such jelly is shown in FIG. Its structure consists of a tension member 8 provided as a core in the center, an optical fiber core tape l placed around it, a jelly 9 filled around it as a water run prevention material, and a jelly 9 around it. It consists of an aluminum tape 5 provided on the top and an outer cover layer 4 covering the entire body.
しかし、該ゼリーは水走り防止性は優れているものの、
ケーブル同士を接続する際のコネクト作業性が劣ったり
、極低温でのマイクロベンディングによりロスが増加す
る等の問題がある。However, although this jelly has excellent water running prevention properties,
There are problems such as poor connection workability when connecting cables and increased loss due to microbending at extremely low temperatures.
従来の光フアイバーケーブルにおいて、海水に対する水
走り防止性、被ｒｉ緩衝性、微小間隙に対しての水走り
防止性、ケーブル作成時の容易性等をあわせ持った光フ
ァイバーケーブル用水走り防止材はまだ報告されていな
い。In conventional optical fiber cables, there have been no reports of water running prevention materials for optical fiber cables that have water running prevention properties against seawater, RI buffering properties, water running prevention properties against minute gaps, and ease of cable creation. It has not been.
本発明の目的は、特に海水に対する水走り防止性、ケー
ブル同士を接続する際のコネクト作業性等に優れた、光
ファイバーケーブル用水走り防止材として適した遮水材
を提供することにある。An object of the present invention is to provide a water-shielding material suitable as an anti-water running material for optical fiber cables, which is particularly excellent in water running prevention properties against seawater and excellent connection workability when connecting cables to each other.
本発明者らは、前記問題点を解決すべく鋭意研究した結
果、ジカルボン酸タイプの化合物の架橋体は海水等の金
属イオンを含む水に対しても優れた吸水性があること、
中でもイソブチレンと無水マレイン酸との共重合体の架
橋物中のカルボキシル基をナトリウム、カリウム、リチ
ウム、アンモニウムの１種または２種以上のアルカリ金
属塩またはアンモニウム塩としたものは海水に対して優
れた吸水性を持つことを見出し本発明に到った。As a result of intensive research to solve the above-mentioned problems, the present inventors found that crosslinked dicarboxylic acid type compounds have excellent water absorption properties even for water containing metal ions such as seawater.
Among them, crosslinked copolymers of isobutylene and maleic anhydride in which the carboxyl group is one or more alkali metal salts or ammonium salts of sodium, potassium, lithium, and ammonium are excellent against seawater. It was discovered that it has water absorption properties, leading to the present invention.
本発明の第１は、イソブチレンと無水マレイン酸との共
重合体中のカルボキシル基の３０％以上がナトリウム、
カリウム、リチウムおよびアンモニウムの１種または２
種以上の塩である水に可溶のイソブチレンと無水マレイ
ン酸との共重合体に、エポキシ基を含む化合物、アミノ
基を含む化合物およびユリア・メラミン樹脂から選ばれ
た１種または２種以上の架橋剤を混合し、加熱により架
橋不溶化した１ｇ当たり１０ｇ以上の海水を吸う吸水体
（以下、Ａタイプ吸水体と称する）の水溶液を支持体に
保持させた後、加熱することにより、前記水溶性重合体
を架橋不溶化させてなる、人工海水に対する吸水倍率が
ＣＢ法で３倍以上であることを特徴とする海水に対する
水走り防止性に優れた遮水材である。The first aspect of the present invention is that 30% or more of the carboxyl groups in the copolymer of isobutylene and maleic anhydride are sodium,
One or two of potassium, lithium and ammonium
A copolymer of water-soluble isobutylene and maleic anhydride, which is a salt or more, is combined with one or more types selected from a compound containing an epoxy group, a compound containing an amino group, and a urea/melamine resin. After holding an aqueous solution of a water absorber (hereinafter referred to as A-type water absorber) that absorbs 10 g or more of seawater per 1 g of a water absorber mixed with a crosslinking agent and crosslinked and insolubilized by heating, the water-soluble material is heated. This water-blocking material is made by cross-linking and insolubilizing a polymer, and is characterized by having a water absorption capacity of 3 times or more compared to artificial seawater using the CB method, and is excellent in preventing water from running against seawater.
本発明の第２は、イソブチレンと無水マレイン酸との共
重合体の架橋体でカルボキシル基の３０％以上がナトリ
ウム、カリウム、リチウム、アンモニウムの１種または
２種以上のアルカリ金属塩またはアンモニウム塩である
１ｇ当たり１０ｇ以上の海水を吸う吸水ポリマー（以下
、Ｂタイプ吸水体と称する）を接着剤を用いて支持体に
保持させてなる、人工海水に対する吸水倍率がＣＢ法で
３倍以上であることを特徴とるす海水に対する水走り防
止性に優れた遮水材である。The second aspect of the present invention is a crosslinked copolymer of isobutylene and maleic anhydride, in which 30% or more of the carboxyl groups are an alkali metal salt or ammonium salt of one or more of sodium, potassium, lithium, and ammonium. A water-absorbing polymer that absorbs 10 g or more of seawater per 1 g (hereinafter referred to as B-type water absorber) is held on a support using an adhesive, and the water absorption capacity for artificial seawater is 3 times or more according to the CB method. It is a water-shielding material with excellent water-blocking properties against seawater.
本発明においてＡタイプ吸水体は、乾燥、粉末化の手間
がいらないためＢタイプ吸水体と比べて吸水体の値段が
安く、また、支持体に付着させる場合も接着剤を必要と
しないため工程コストも安くＢタイプ吸水体と比べて有
利である。In the present invention, the A type water absorber does not require the labor of drying and powdering, so the price of the water absorber is lower than that of the B type water absorber, and when it is attached to a support, it does not require an adhesive, so the process cost is low. It is also cheaper and has an advantage compared to type B water absorbers.
ここで水走り防止性とは、例えば第１図、第２図に見ら
れるような光フアイバーケーブルにおいて、何らかの形
で外被が破られ水が浸入した場合、ケーブルの長平方向
に伝わろうとする水を瞬時のうちに吸水膨潤し遮水する
性能をいう。水走り防止性は遮水性能を表わし、ここで
は２４時間で水が何龍伝播するかを数値化したもので表
わし、この値が小さいほど水走り防止性がよいことを示
す。Here, water running prevention property refers to, for example, in an optical fiber cable as shown in Figures 1 and 2, if the outer sheath is somehow broken and water infiltrates, water that tries to travel in the longitudinal direction of the cable will be prevented. The ability to instantly absorb water, swell, and block water. The water running prevention property represents the water blocking performance, and here it is expressed as a numerical value of how much water spreads in 24 hours, and the smaller this value is, the better the water running prevention property is.
被覆緩衝性とは、ケーブルに対する外力から通信ケーブ
ル心線を保護する外力緩和効果をいう。The term "covering buffering property" refers to the external force mitigation effect that protects the communication cable core from external forces applied to the cable.
本発明に用いるエポキシ基を含む化合物とは、ジグリシ
ジル、エーテル・ビスフェノールＡ、グリセリン・ジグ
リシジルエーテル、エチレングリコール・ジグリシジル
エーテル、ポリエチレングリコール・ジグリシジルエー
テル、プロピレングリコール・ジグリシジルエーテル、
ポリプロピレングリコール・ジグリシジルエーテルのよ
うなグリシジルエーテル形の化合物類、ジグリシジルフ
タレート、ジグリシジルマレエートのようなグリシジル
エステル形の化合物類、ビニルシクロヘキセンジオキサ
イドのような脂環式オキシド等があげられる。これらの
エポキシ基を含む化合物は１種あるいは２種以上の混合
物として用いられる。The compounds containing epoxy groups used in the present invention include diglycidyl, ether bisphenol A, glycerin diglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether,
Examples include glycidyl ether compounds such as polypropylene glycol diglycidyl ether, glycidyl ester compounds such as diglycidyl phthalate and diglycidyl maleate, and alicyclic oxides such as vinyl cyclohexene dioxide. These epoxy group-containing compounds may be used alone or as a mixture of two or more.
また、アミノ基を含む化合物とは、脂肪族または芳香族
の第一級から第三級のアミン類で、できるだけ水に可溶
で沸点の高いものである。これらの多価アミンとしては
エチレンジアミン、プロピレンジアミン、トリエチレン
テトラミン、テトラエチレンベンタミンスーパーミン、
ｍ−トリレンジアミン、ポリエチレンイミン等の脂肪族
および芳香族アミン類があげられる。これらの他に脂環
式のアミン類やエタノールアミン類も用いられる。Furthermore, the compound containing an amino group is an aliphatic or aromatic primary to tertiary amine, which is as water soluble as possible and has a high boiling point. These polyvalent amines include ethylenediamine, propylenediamine, triethylenetetramine, tetraethylenebentamine supermine,
Examples include aliphatic and aromatic amines such as m-tolylene diamine and polyethyleneimine. In addition to these, alicyclic amines and ethanolamines are also used.
これらのアミノ基を含む化合物は１種あるいは２種以上
の混合物として用いられる。These amino group-containing compounds may be used alone or as a mixture of two or more.
ユリア・メラミン樹脂とは、尿素および／またはメラミ
ンとホルムアルデヒドとの縮合生成物および／または上
記縮合物のアルコールによるエーテル化物で、尿素の種
類、メラミンの種類、またはアルコールの種類を変えた
ものを含む。これらは、できるだけ水に熔解し易いもの
が好ましい。Urea-melamine resin is a condensation product of urea and/or melamine with formaldehyde and/or an etherification product of the above condensate with alcohol, including those with different types of urea, melamine, or alcohol. . These are preferably those that are as easily soluble in water as possible.
上記反応剤は１種あるいは２種以上混合して用いられる
。これらの反応剤は必ずしも水に可溶でなくとも使用で
きるが、本発明で使用される共重合体の水溶液とは互い
に溶解し合う必要がある。The above reactants may be used alone or in combination of two or more. Although these reactants do not necessarily need to be soluble in water, they must be mutually soluble in the aqueous solution of the copolymer used in the present invention.
本発明に用いる上記Ａ、Ｂタイプの吸水体は公知の方法
により重合、架橋、不溶化すればよいが、得られた吸水
体は１ｇ当たり１０ｇ以上の海水を吸う必要がある。The above A and B type water absorbers used in the present invention may be polymerized, crosslinked, and insolubilized by known methods, but the obtained water absorbers must absorb 10 g or more of seawater per gram.
本発明に用いられる支持体としては、繊維状構造体、フ
ィルム等があげられる。繊維状構造体とは、長繊維およ
び／または単繊維の織物、編物、湿式不織布、乾式不織
布、スパンボンド不織布、紙、糸等をいう。支持体に用
いる素材は特に制限はないが、光フアイバーケーブルの
場合は、腐敗により水素ガスのでない素材が好ましく、
例えばアクリル系合成繊維、ポリエステル系合成繊維、
ポリプロピレン系合成繊維等があげられる。また、特開
昭６２−１５３１８号公報に記載されているアクリル系
高吸水繊維を用いると繊維自身の吸水性が加わるために
、水走り防止性が一段と向上し、さらにこの繊維はＬＯ
Ｉ値が３２と優れた難燃性を持っており、難燃ケーブル
の作成にも通しており好ましい。なお、ＬＯＩ値とは限
界酸素指数のことで、連続して燃焼するために最低限必
要な濃度（％）であり、この値が大きいほどＮ燃性が高
い。Examples of the support used in the present invention include fibrous structures and films. The fibrous structure refers to long fiber and/or single fiber woven fabrics, knitted fabrics, wet-laid nonwoven fabrics, dry-laid nonwoven fabrics, spunbond nonwoven fabrics, paper, threads, and the like. There are no particular restrictions on the material used for the support, but in the case of optical fiber cables, it is preferable to use a material that does not produce hydrogen gas due to decomposition.
For example, acrylic synthetic fibers, polyester synthetic fibers,
Examples include polypropylene synthetic fibers. Furthermore, when the acrylic superabsorbent fiber described in JP-A No. 62-15318 is used, the water absorbency of the fiber itself is added, which further improves the water running prevention property, and furthermore, this fiber has LO
It has excellent flame retardancy with an I value of 32, and is suitable for making flame-retardant cables. Note that the LOI value refers to the limit oxygen index, which is the minimum concentration (%) required for continuous combustion, and the larger this value is, the higher the N flammability is.
本発明の高吸水体を支持体に保持させる方法としては、
Ａタイプ吸水体の場合は、そのまま、もしくは水で適当
に希釈して用いるか、または水溶性の接着剤を併用して
用い、Ｂタイプ吸水体の場合は接着剤溶液に分散させて
用いる。例えば支持体がフィルム状、シート状の布帛、
不織布等の構造物である場合は、前記構造物を吸水体（
溶？＆）に？ｌ ？ｌ後、マングルで絞液する方法、糸
条の場合は、織物の糊付整経に準じる方法、１本糊付（
例えばユニサイザー：梶製作所（株）の商品名）による
方法等により本発明の遮水材を得ることができる。The method for holding the superabsorbent material of the present invention on a support is as follows:
In the case of A type water absorbent, it is used as it is or after diluting with water, or in combination with a water-soluble adhesive, and in the case of B type water absorbent, it is used after being dispersed in an adhesive solution. For example, the support is film-like, sheet-like fabric,
When the structure is made of non-woven fabric, etc., the structure is covered with a water absorbent material (
Melt? &) to? l? 1, then squeeze the liquid with a mangle, or in the case of threads, use a method similar to warping with glue for textiles, or use a method similar to warping with glue on a single thread (
For example, the water-blocking material of the present invention can be obtained by a method such as Unisizer (trade name of Kaji Seisakusho Co., Ltd.).
本発明において、高吸水体を支持体に保持して得られた
遮水材の吸水倍率は、水走り防止性の点から人工海水に
対してＣＢ法で３倍以上であることが好ましい。In the present invention, the water absorption capacity of the water-shielding material obtained by holding the superabsorbent material on a support is preferably 3 times or more that of artificial seawater by the CB method from the viewpoint of preventing water running.
本発明の遮水材を用いてケーブルの水走り防止性を得る
には、水の浸入とともに水走り防止材全体が瞬時のうち
に吸水膨潤し、水はそれ以上浸入しないことが必要であ
る。水走り防止効果は、遮水材の吸水倍率、光フアイバ
ーケーブルへの遮水材の詰込密度に関連する。In order to obtain water running prevention properties for cables using the water shielding material of the present invention, it is necessary that the entire water running prevention material instantly swells by water absorption upon entry of water, and that water does not penetrate any further. The water running prevention effect is related to the water absorption capacity of the water-shielding material and the packing density of the water-shielding material into the optical fiber cable.
本発明の水走り防止材を用いた好ましい一例を光フアイ
バーケーブルの場合を例にして第１図により説明する。A preferred example of the use of the water run-preventing material of the present invention will be described with reference to FIG. 1, taking the case of an optical fiber cable as an example.
第１図は、本発明の一実施例を示すスロットタイプの光
フアイバーケーブルの断面図で、最中６部にコアとして
のテンションメンバー８が設けられ、その周りにスロッ
ト３Ａのあるスペーサー３が配置され、スロット３Ａに
光フアイバー心線テープ１と本発明の遮水材からなるス
ロット用遮水テープ７が配置されており、その周りに本
発明による遮水材の押さえ巻きテープ６が設けられ、さ
らに全体が外被層４で包み込まれたものからなる。FIG. 1 is a cross-sectional view of a slot-type optical fiber cable showing an embodiment of the present invention, in which a tension member 8 as a core is provided at the middle 6 portion, and a spacer 3 having a slot 3A is arranged around it. The optical fiber core tape 1 and the water-shielding tape 7 for slots made of the water-shielding material of the present invention are arranged in the slot 3A, and the pressure-wrapping tape 6 of the water-shielding material of the present invention is provided around it, Further, the entire structure is covered with an outer covering layer 4.
なお、１０は本発明の遮水材からなる遮水用紡績糸であ
る。Note that 10 is a water-shielding spun yarn made of the water-shielding material of the present invention.
このような構成の光フアイバーケーブルは外被４にクラ
ックが生じて水が浸入してきても、浸入してきた水によ
り押さえ巻きテープ６、スロット用遮水テープ７と遮水
用紡績糸１０が水を吸収することにより瞬時に吸水膨潤
し、水の浸入をわずかにとどめ、さらにそれ以上の浸入
を長期間にわたって防ぐことができる。In the optical fiber cable having such a structure, even if a crack occurs in the outer sheath 4 and water intrudes, the pressure wrapping tape 6, the water-shielding tape 7 for the slot, and the water-shielding spun yarn 10 will prevent the water from entering. By absorbing water, it instantly swells, suppresses the ingress of water to a small extent, and further prevents further infiltration for a long period of time.
以下、本発明を実施例により具体的に説明する。Hereinafter, the present invention will be specifically explained with reference to Examples.
なお、実施例中の％はすべで重量％である。Note that all percentages in the examples are percentages by weight.
本実施例で用いられる特性の測定方法は次のとおりであ
る。The method of measuring characteristics used in this example is as follows.
吸水性：
イ）ＣＢ法
ポリエステルネットに入れた試料を２０℃の水中に一定
時間浸漬し、空中に１０分間吊した後、遠心脱水機にて
１０００Ｇの力で１分間脱水を行なった後、試料をネッ
トより取出し、重量を測定する。このときの重量をＡと
し次式により吸水倍率を求める。Water absorption: a) CB method A sample placed in a polyester net is immersed in water at 20°C for a certain period of time, suspended in the air for 10 minutes, and then dehydrated for 1 minute with a force of 1000 G in a centrifugal dehydrator. Take it out from the net and measure its weight. The weight at this time is assumed to be A, and the water absorption capacity is determined by the following formula.
し
Ｃ：８０℃に調整した熱風乾燥品中で重量変化のなくな
るまで乾燥した後の重量。C: Weight after drying in a hot air drying product adjusted to 80°C until there is no change in weight.
腐敗テスト：
第３図に示す容器１２にテストサンプル１４を４ｇ入れ
、以下に述べる土壌抽出液１３を２００ｃｃ入れて混合
し、３０℃で日陰に保存し、３０日後に容器のコック１
０を開き、空気の部分から２〜４ ｃｃの空気を抜取り
、ガスクロマトグラフで発生ガスを分析するとともに、
肉眼で溶液の色や状態を調べる。Putrefaction test: Put 4g of the test sample 14 into the container 12 shown in Fig. 3, add 200cc of the soil extract 13 described below, mix, store in the shade at 30°C, and after 30 days remove the stopper 1 of the container.
0 is opened, 2 to 4 cc of air is extracted from the air section, and the generated gas is analyzed using a gas chromatograph.
Check the color and condition of the solution with the naked eye.
土壌抽出液の作成は以下のように行なう。The soil extract is prepared as follows.
（１）土は落葉などあり、草のはえているところから採
取する。(1) Soil is collected from areas where there are fallen leaves and grass is growing.
（２）５００ｇの土を２０００ ｃｃの純水に混ぜて攪
拌する。(2) Mix 500 g of soil with 2000 cc of pure water and stir.
（３）１２時間放置後上ずみ液を濾過し、濾過液５０ｃ
ｃに純水１５０ ｃｃを加え土壌抽出液とする。(3) After leaving for 12 hours, filter the supernatant and 50c of the filtrate.
Add 150 cc of pure water to c to obtain a soil extract.
（４）土および土壌抽出液は試験のバッチ毎に新しく採
取、抽出する。(4) Soil and soil extract should be freshly collected and extracted for each test batch.
柔軟性テスト：
ＪＩＳ−Ｌ−１０７９−Ｂ法（４５°カンチレバー法）
に準じて行ない、１０Ｇ以下を合格とし○印で示し、１
０ｃｍを超えるものはＸ印で示す。Flexibility test: JIS-L-1079-B method (45° cantilever method)
A test of 10G or less is considered to be a pass and is marked with a circle.
Those exceeding 0 cm are indicated by an X mark.
実施例１〜６
カシミロンＦＫ（旭化成工業（株）社製アクリル系繊維
の商品名）３ｄトウ６５万デニールを用い、トウ牽切機
を用いて牽切し通常のバルキー糸の製造法で２／３ＯＮ
ｍ、α＝０．６／６５、沸水収縮率２６％の紡績糸を得
た。Examples 1 to 6 Cashmilon FK (trade name of acrylic fiber manufactured by Asahi Kasei Industries, Ltd.) 3D tow of 650,000 denier was tension-cut using a tow tension-cutting machine and 2/2/2 by the normal bulky yarn manufacturing method. 3ON
A spun yarn with m, α=0.6/65 and a boiling water shrinkage rate of 26% was obtained.
次にＡタイプ吸水体としてＫＩゲル溶液システム（（株
）クラレ社製商品名、イソブチレンと無水マレイン酸と
の共重合体で、カルボキシル基の一部が塩となったもの
が主体）を用い、１本欄付方式ユニサイザー（梶製作所
（株）の商品名）で前記紡績糸を処理した後１０５℃×
３０分の熱処理を施した。Next, KI gel solution system (trade name, manufactured by Kuraray Co., Ltd., which is mainly a copolymer of isobutylene and maleic anhydride, with some of the carboxyl groups turned into salts) was used as a type A water absorber. After treating the spun yarn with a single column type unisizer (trade name of Kaji Seisakusho Co., Ltd.) at 105°C
Heat treatment was performed for 30 minutes.
一方、前記紡績糸を、Ｂタイプ吸水体としてに■ゲル２
０１Ｋ（（株）クラレ社製商品名）をブチルゴム系接着
剤のトルエン溶液に分散させた溶液を用いてＫＩゲルの
固形分付着量として３０％になるよう処理した。On the other hand, using the spun yarn as a B-type water absorbent, ■ Gel 2
A solution prepared by dispersing 01K (trade name, manufactured by Kuraray Co., Ltd.) in a toluene solution of a butyl rubber adhesive was used to adjust the solid content of the KI gel to 30%.
このようにして得られた吸水紡績糸について、吸水性と
水走り防止性について評価した結果を第１表に示す。な
お、水走り防止性の評価は、充填密度０．５ｇ／ｃｆｆ
ｌで、２４時間後の水の侵入長さで示し、５０ａｎ以下
を合格とした。これはＣＢ法で測定し、人工海水はアク
アマリン（へ州薬品（株）の商品名）を用いた。Table 1 shows the results of evaluating the water absorbing spun yarn thus obtained in terms of water absorbency and anti-water running properties. In addition, the evaluation of water running prevention property is based on a packing density of 0.5 g/cff.
1, which is expressed as the length of water penetration after 24 hours, and a value of 50 an or less was considered to be a pass. This was measured by the CB method, and Aquamarine (trade name of Heshu Yakuhin Co., Ltd.) was used as the artificial seawater.
なお、比較例として吸水体の付着量が少なく、所定の吸
水倍率がＣＢ法で３倍に達しないもの（比較例１．３）
、吸水体の付着量が多すぎて使用に支障をきたす場合（
比較例２．４）を示した。In addition, as a comparative example, the amount of attached water absorber is small and the predetermined water absorption capacity does not reach 3 times by the CB method (Comparative Example 1.3)
, If the amount of adhesion of the water absorbent is too large and interferes with use (
Comparative Example 2.4) is shown.
第 １ 表
実施例に示すごとく、本発明になるＣＢ法で３倍以上の
吸水倍率を持つ吸水紡績糸は良好な水走り防止性を示す
が、３倍未満の吸水倍率のものでは、比較例１．３に示
すごとく水走り防止性が不良となる。また、付着量が２
００％を超えると糸が硬くなりＫＩゲルが脱落し易くな
るため、ケーブル製造時およびケーブルコネクト時の作
業性が悪く、さらにケーブルを曲げたり衝撃を与えたり
した場合、水走り防止材がクツション材とならず、光フ
ァイバーに悪影響を及ぼす問題を生じる。As shown in the Examples in Table 1, the water-absorbent spun yarn with a water absorption capacity of 3 times or more according to the CB method of the present invention exhibits good water run prevention properties, but those with a water absorption capacity of less than 3 times, compared with the comparative examples. As shown in 1.3, the water running prevention property becomes poor. Also, the amount of adhesion is 2
If it exceeds 00%, the thread will become hard and the KI gel will easily fall off, resulting in poor workability during cable manufacturing and cable connection.Furthermore, if the cable is bent or subjected to impact, the water running prevention material may become a cushion material. This results in problems that adversely affect optical fibers.
第１表に示すごとく本発明の遮水材である吸水紡績糸は
優れた水走り防止性を示す。また、この吸水紡績糸は触
感による風合いは柔らかく、ケーブルコネクト作業性、
被覆緩衝性とも良好であると考えられる。なお、この吸
水紡績糸は腐敗テストによる水素ガスの発生は認められ
なかった。As shown in Table 1, the water-absorbing spun yarn, which is the water-blocking material of the present invention, exhibits excellent water running prevention properties. In addition, this water-absorbing spun yarn has a soft texture and is easy to work with when connecting cables.
It is considered that the coating has good cushioning properties. It should be noted that no generation of hydrogen gas was observed in this water-absorbing spun yarn in a putrefaction test.
実施例７
カシミロンＦＫ（旭化成工業（株）社製アクリル系繊維
の商品名）３ｄＸ７６＋＋ｎ、９０％にメルチイー（ユ
ニチカ（株）社製ポリエステル熱融着繊維の商品名）３
ｄＸ７６ｎ、１０％をカードで８０ｇ／ｒｒｒのウェッ
ブを作成した後、１３０℃に加熱されたプレスロールで
３ｋｇ／ｒｒｆの圧力で１０ｍ／ｍｉｎの速度で加熱プ
レスを行ない得られた乾熱不織布を得た。Example 7 Cashmilon FK (trade name of acrylic fiber manufactured by Asahi Kasei Industries, Ltd.) 3dX76++n, 90% of Melchie (trade name of polyester heat-sealable fiber manufactured by Unitika Corporation) 3
After creating a web of 80 g/rrr with 10% dX76n card, heat pressing was performed at a pressure of 3 kg/rrf at a speed of 10 m/min using a press roll heated to 130°C to obtain a dry heat nonwoven fabric. Ta.
この不織布をＡタイプ吸水体として前記Ｋｌゲル溶液シ
ステムを用い、Ｋｌゲルの固形分付着量として３０％に
なるよう浸漬後、マングルで絞液し乾燥後１０５℃Ｘ３
０分の熱処理を施した。This nonwoven fabric was used as an A-type water absorbent using the Kl gel solution system described above, and after soaking so that the solid content of Kl gel was 30%, the liquid was squeezed with a mangle and dried at 105°C
Heat treatment was performed for 0 minutes.
また、同様にこの不織布をＢタイプ吸水体としてＫｌゲ
ル２０１Ｋｉ株）クラレ社製商品名）をブチルゴム系接
着剤のトルエン溶液に分散させた溶液、を用いて、Ｋｌ
ゲルの固形分付着量として３０％になるよう浸漬後マン
グルで絞液し乾燥した。Similarly, using this nonwoven fabric as a B-type water absorbent, Kl Gel 201Ki (trade name manufactured by Kuraray Co., Ltd.) was dispersed in a toluene solution of a butyl rubber adhesive.
After immersion, the gel was squeezed with a mangle and dried so that the solid content of the gel was 30%.
得られたシート状の遮水材をそれぞれ２．５唾幅にスリ
ットし、本発明の遮水材としての押さえ巻きテープを得
た。これらの押さえ巻きテープを充填密度０．５ｇ／ｃ
ｆｆｌで水走り防止性を測定したところ、Ａタイプ、Ｂ
タイプとも２０〜３０口で良好な水走り防止性を示した
。The obtained sheet-like water-shielding material was each slit into a width of 2.5 mm to obtain a pressure-wrapping tape as a water-shielding material of the present invention. These pressure-wrapped tapes have a packing density of 0.5 g/c.
When the water running prevention property was measured using ffl, it was found that type A, type B
Both types showed good water running prevention properties at 20 to 30 mouths.
また、これらの押さえ巻きテープは、触感による風合い
は柔らかく、ケ−ブルコネクト作業性、被覆緩衝性とも
良好であると考えられる。なお、これらの押さえ巻きテ
ープは腐敗テストによる水素ガスの発生は認められなか
った。In addition, these pressure-wrapping tapes have a soft feel to the touch, and are considered to have good cable connection workability and covering cushioning properties. It should be noted that no generation of hydrogen gas was observed in these pressure-wrapping tapes in a decomposition test.
実施例８
直径１．５ ｃｍのポリエチレン製の円柱状の棒に長さ
方向に沿って幅１．６龍、深さ１．２１ｍの溝（スロッ
ト）を形成した（これをスロット棒と称する）。Example 8 A groove (slot) with a width of 1.6 mm and a depth of 1.21 m was formed along the length of a cylindrical rod made of polyethylene with a diameter of 1.5 cm (this is referred to as a slot rod). .
次に、厚さ４０μｍのポリエステルフィルムの両面に、
片面の厚さが３０〜５０μｍになるようにＡタイプ吸水
体としてＫＩゲル溶液システムを用い、またＢタイプ吸
水体としてＫｌゲル２０１Ｋ（（株）クラレ社製商品名
）をブチルゴム系接着剤のトルエン溶液に分散させた溶
液を用いてそれぞれコーティングした。なお、ＫＩゲル
溶液システムを用いたものは乾燥後１０５℃×３０分の
熱処理を施した。Next, on both sides of a 40 μm thick polyester film,
KI Gel solution system was used as the A type water absorber so that the thickness of one side was 30 to 50 μm, and Kl Gel 201K (trade name manufactured by Kuraray Co., Ltd.) was used as the B type water absorber with a toluene butyl rubber adhesive. Each was coated using a solution dispersed in a solution. In addition, those using the KI gel solution system were subjected to heat treatment at 105° C. for 30 minutes after drying.
コーティングされたフィルムを幅１．３鶴にスリットし
スロット用遮水テープを得た。The coated film was slit to a width of 1.3 mm to obtain a water-blocking tape for slots.
スロット棒の溝にまず厚さ４００μｍ、幅１．４龍の光
フアイバー心線テープを入れ、その上にスロット用遮水
テープを入れ、さらにその上に光フアイバー心線テープ
を入れた。全体を実施例２で作成した遮水用押さえ巻き
きテープで覆い、さらにその上をビニルテープで覆った
。両端をオープンにして片面から水頭圧１ｍで人工海水
を流し、２４時間後の水走り防止性を調べたところ、Ａ
タイプ、Ｂタイプとも水走り長さは２０〜５０ｃｍで良
好な水走り防止性を示した。First, an optical fiber core tape with a thickness of 400 μm and a width of 1.4 mm was placed in the groove of the slot rod, a water-shielding tape for the slot was placed on top of it, and then an optical fiber ribbon tape was placed on top of that. The whole was covered with the waterproof tape prepared in Example 2, and further covered with vinyl tape. When both ends were opened and artificial seawater was poured from one side at a head pressure of 1 m, the ability to prevent water running after 24 hours was investigated.
Both type and B type had a water running length of 20 to 50 cm and exhibited good water running prevention properties.
本発明によれば、特に海水に対する水走り防止性、ケー
ブル同士を接続する際のコネクト作業性等に優れた光フ
アイバーケーブル用遮水材が得られる。According to the present invention, it is possible to obtain a water-shielding material for optical fiber cables that is particularly excellent in preventing sea water from running through the water and in connection workability when connecting cables to each other.
第１図は、本発明の適用例を示すスロ７）タイプの水走
り防止型光ファイバーケーブルの拡大断面図、第２図は
、従来行なわれているスロットタイプのゼリー充填式水
走り防止型光ファイバーケーブルの拡大断面図、第３図
は、腐敗テスト用装置を示す側面図である。
１・・・光フアイバー心線テープ、２・・・光ファイバ
ー、３・・・スロット型スペーサー、４・・・外被、５
・・・アルミテープ、６・・・本発明の押さえ巻きき遮
水テープ、７・・・本発明のスロット用遮水テープ、８
・・・テンションメンバー、９・・・ゼリー、１０・・
・本発明の遮水用紡績糸、１１・・・コンク、１２・・
・ガラス製三角フラスコ、１３・・・土壌抽出液、１４
・・・テストサンプル。
代理人 弁理士 川 北 武 長
第１図
第２図Fig. 1 is an enlarged cross-sectional view of a slot type 7) type optical fiber cable that prevents water running, showing an example of application of the present invention, and Fig. 2 shows a conventional slot type jelly-filled optical fiber cable that prevents water running. FIG. 3 is a side view of the rot test apparatus. DESCRIPTION OF SYMBOLS 1... Optical fiber cored tape, 2... Optical fiber, 3... Slot type spacer, 4... Outer cover, 5
... Aluminum tape, 6 ... Pressure-wrapped water-blocking tape of the present invention, 7... Water-blocking tape for slots of the present invention, 8
...Tension member, 9...Jelly, 10...
・Water-blocking spun yarn of the present invention, 11...Conch, 12...
・Glass Erlenmeyer flask, 13...Soil extract, 14
...Test sample. Agent Patent Attorney Takenaga Kawakita Figure 1 Figure 2
Claims (2)
カルボキシル基の３０％以上がナトリウム、カリウム、
リチウムおよびアンモニウムの１種または２種以上の塩
である水に可溶のイソブチレンと無水マレイン酸との共
重合体に、エポキシ基を含む化合物、アミノ基を含む化
合物およびユリア・メラミン樹脂から選ばれた１種また
は２種以上の架橋剤を混合し、加熱により架橋不溶化し
た１ｇ当たり１０ｇ以上の海水を吸う吸水体の水溶液を
支持体に保持させた後、加熱することにより、前記水溶
性重合体を架橋不溶化させてなる、人工海水に対する吸
水倍率がＣＢ法で３倍以上である水走り防止性遮水材。(1) At least 30% of the carboxyl groups in the copolymer of isobutylene and maleic anhydride are sodium, potassium,
A copolymer of water-soluble isobutylene and maleic anhydride, which is one or more salts of lithium and ammonium, is selected from a compound containing an epoxy group, a compound containing an amino group, and a urea/melamine resin. The above-mentioned water-soluble polymer is prepared by mixing one or more cross-linking agents, holding an aqueous solution of a water absorbent that absorbs 10 g or more of seawater per 1 g of crosslinking and insolubilizing it by heating, and then heating the water-soluble polymer. A water-blocking material that prevents water run-through and has a water absorption capacity of 3 times or more compared to artificial seawater by the CB method, which is obtained by crosslinking and insolubilizing.
橋体でカルボキシル基の３０％以上がナトリウム、カリ
ウム、リチウム、アンモニウムの１種または２種以上の
アルカリ金属塩またはアンモニウム塩である１ｇ当たり
１０ｇ以上の海水を吸う吸水ポリマーを接着剤を用いて
支持体に保持させてなる、人工海水に対する吸水倍率が
ＣＢ法で３倍以上である水走り防止性遮水材。(2) A crosslinked copolymer of isobutylene and maleic anhydride, in which 30% or more of the carboxyl groups are an alkali metal salt or ammonium salt of one or more of sodium, potassium, lithium, and ammonium, 10 g per 1 g. A water-blocking material that prevents running of water and has a water absorption capacity of 3 times or more for artificial seawater by the CB method, which is made by holding the water-absorbing polymer that absorbs seawater as described above on a support using an adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63135832A JPH01304145A (en) | 1988-06-02 | 1988-06-02 | Water running-preventing water barrier material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63135832A JPH01304145A (en) | 1988-06-02 | 1988-06-02 | Water running-preventing water barrier material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01304145A true JPH01304145A (en) | 1989-12-07 |
Family
ID=15160821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63135832A Pending JPH01304145A (en) | 1988-06-02 | 1988-06-02 | Water running-preventing water barrier material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01304145A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517588A (en) * | 1991-01-10 | 1993-01-26 | Kuraray Co Ltd | Water-shielding material |
| JP2005517789A (en) * | 2002-02-15 | 2005-06-16 | ピーピージー インダストリーズ オハイオ， インコーポレイテッド | Aqueous composition containing a copolymer of isobutylene |
| JP2005517776A (en) * | 2002-02-15 | 2005-06-16 | ピーピージー インダストリーズ オハイオ， インコーポレイテッド | Aqueous film-forming composition containing alternating copolymers of isobutylene type monomers |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325666A (en) * | 1976-08-23 | 1978-03-09 | Kasei Co C I | Self swelling waterstopping material production method |
| JPS55144044A (en) * | 1979-04-26 | 1980-11-10 | Kuraray Co Ltd | Water-containing gel |
| JPS56167757A (en) * | 1980-05-30 | 1981-12-23 | Kuraray Isopuren Chem Kk | Production of water-swelling material |
| JPS6173767A (en) * | 1984-09-19 | 1986-04-15 | Sumitomo Chem Co Ltd | Production of water-absorbing material |
-
1988
- 1988-06-02 JP JP63135832A patent/JPH01304145A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325666A (en) * | 1976-08-23 | 1978-03-09 | Kasei Co C I | Self swelling waterstopping material production method |
| JPS55144044A (en) * | 1979-04-26 | 1980-11-10 | Kuraray Co Ltd | Water-containing gel |
| JPS56167757A (en) * | 1980-05-30 | 1981-12-23 | Kuraray Isopuren Chem Kk | Production of water-swelling material |
| JPS6173767A (en) * | 1984-09-19 | 1986-04-15 | Sumitomo Chem Co Ltd | Production of water-absorbing material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517588A (en) * | 1991-01-10 | 1993-01-26 | Kuraray Co Ltd | Water-shielding material |
| JP2005517789A (en) * | 2002-02-15 | 2005-06-16 | ピーピージー インダストリーズ オハイオ， インコーポレイテッド | Aqueous composition containing a copolymer of isobutylene |
| JP2005517776A (en) * | 2002-02-15 | 2005-06-16 | ピーピージー インダストリーズ オハイオ， インコーポレイテッド | Aqueous film-forming composition containing alternating copolymers of isobutylene type monomers |
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