JPS5857591A - Pipe joint - Google Patents
Pipe jointInfo
- Publication number
- JPS5857591A JPS5857591A JP15681681A JP15681681A JPS5857591A JP S5857591 A JPS5857591 A JP S5857591A JP 15681681 A JP15681681 A JP 15681681A JP 15681681 A JP15681681 A JP 15681681A JP S5857591 A JPS5857591 A JP S5857591A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- polyolefin
- parts
- ethylene
- joint
- 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
- 229920000098 polyolefin Polymers 0.000 claims description 33
- 229920001577 copolymer Polymers 0.000 claims description 11
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 6
- 150000008064 anhydrides Chemical class 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 14
- 239000004711 α-olefin Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- -1 ethylene, propylene Chemical group 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000003431 cross linking reagent Substances 0.000 description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 description 4
- 239000004703 cross-linked polyethylene Substances 0.000 description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 150000001451 organic peroxides Chemical class 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 229920006163 vinyl copolymer Polymers 0.000 description 2
- NIDNOXCRFUCAKQ-RNGGSSJXSA-N (1r,2r,3s,4s)-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1[C@@H]2C=C[C@H]1[C@H](C(=O)O)[C@@H]2C(O)=O NIDNOXCRFUCAKQ-RNGGSSJXSA-N 0.000 description 1
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 description 1
- PPWUTZVGSFPZOC-UHFFFAOYSA-N 1-methyl-2,3,3a,4-tetrahydro-1h-indene Chemical compound C1C=CC=C2C(C)CCC21 PPWUTZVGSFPZOC-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- RYPKRALMXUUNKS-UHFFFAOYSA-N 2-Hexene Natural products CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 1
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 description 1
- WTQBISBWKRKLIJ-UHFFFAOYSA-N 5-methylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C)CC1C=C2 WTQBISBWKRKLIJ-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 125000004181 carboxyalkyl group Chemical group 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- DPUXQWOMYBMHRN-UHFFFAOYSA-N hexa-2,3-diene Chemical compound CCC=C=CC DPUXQWOMYBMHRN-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000000052 vinegar 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
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
ポリオレフィンパイプや架橋ポリオレフィンパイプの接
続には、従来、金属製の接続部杓を用いた、所謂メカニ
カル・ジヨイントが採用されて来ているが、メカニカル
・ジ、インドは、コスト高である。あるいはパイプと金
属製接続ｆｆ１ｓ１；ｌとは硬度が互に全く相違するか
ら接続部の気密性が必ずしも良好でない場合が生じるな
ど種々の問題がある。[Detailed Description of the Invention] Conventionally, so-called mechanical joints using metal connection ladles have been used to connect polyolefin pipes and cross-linked polyolefin pipes. The cost is high. Alternatively, since the pipe and the metal connection ff1s1;l have completely different hardnesses, there are various problems such as the airtightness of the connection part not necessarily being good.
ところて、本発明者らは、下記の特定のポリオレフィン
の架橋物は架橋ポリエチレン、架橋プロピレンなどの通
常の架橋ポリオレフィンと比較してポリオレフィンや架
橋ポリオレフィンに対する接着、接合性等が格段（こす
ぐれており、しかも耐熱性、機械強度、耐環境応力亀裂
性などの点て通常の架橋ポリエチレンなどと同等の性能
を何するとの新知見を得た。By the way, the present inventors have discovered that the following specific crosslinked polyolefins have much better adhesion and bonding properties to polyolefins and crosslinked polyolefins than ordinary crosslinked polyolefins such as crosslinked polyethylene and crosslinked propylene. In addition, new knowledge was obtained that the material has properties equivalent to those of ordinary cross-linked polyethylene in terms of heat resistance, mechanical strength, and resistance to environmental stress cracking.
本発明は上記の新知見にもとづいて開発したものであっ
て、その要旨とするところは、（ａｌエチレン性不飽和
カルボン酸又はその無水物で変性すれタポリオレフィン
、（ｂ）α−オレフィンとカルボッ酸又はその誘導体と
の共重合体、及びｔａエチレンと０８〜ＣＩｏのα−オ
レフィンとの共重合体からなる群から選ばれた一種又は
二種以上をベースとする架橋性物質で構成されてなるこ
とを特徴とするパイプ継手である。The present invention was developed based on the above-mentioned new findings, and its gist is that (b) α-olefin and carboxylic polyolefin modified with ethylenically unsaturated carboxylic acid or its anhydride; It is composed of a crosslinkable substance based on one or more selected from the group consisting of a copolymer with an acid or a derivative thereof, and a copolymer of ta ethylene and an α-olefin of 08 to CIo. This pipe fitting is characterized by:
上記（ａｌ成分のポリオレフィンは、
次の一般式
Ｒ２
（ここに、ａ１％ａ２、ＦＬ８は、水素、ハロ／７’
ン、カルボキシル基、アルキル基、カルボキンアルキル
基）で示されるラジカル重合性を有するエチレン性不飽
和カルボン酸又はその無水物、たとえばアクリル酸、マ
レイン酸、イタコン酸。The above polyolefin (al component) has the following general formula R2 (where a1%a2, FL8 are hydrogen, halo/7'
Ethylenically unsaturated carboxylic acids or anhydrides thereof, such as acrylic acid, maleic acid, and itaconic acid, which have radical polymerizability represented by (carboxyl group, carboxyl group, alkyl group, carboxyl alkyl group).
ハイミック酸又はそれらの無水物を０．００１〜１０重
ｉｔ％程度コポリマー成分、グラフト成分などとして含
むαオレフィンの重合体である。It is an α-olefin polymer containing about 0.001 to 10% by weight of Himic acid or its anhydride as a copolymer component, a graft component, etc.
該αオレフィンとしては、たとえばエチレン、プロピレ
ン、ブテン−１、ペンテンナトの一種又は二種以上が用
いられる。As the α-olefin, for example, one or more of ethylene, propylene, butene-1, and pentenato are used.
特に、エチレン−マレイン酸共重合体〔マレイン酸含有
量００１〜１重量裂〕、エチレン−アクリル酸共重合体
（アクリル酸含有酸０．０１〜１重着％）が好ましい。Particularly preferred are ethylene-maleic acid copolymers (maleic acid content: 0.01 to 1% by weight) and ethylene-acrylic acid copolymers (acrylic acid content: 0.01 to 1% by weight).
上記（ｂ） １ｆｆ１分のポリオレフィンはα−オレフ
ィン１．＋トエハエチレン、フロピレン、ブテン−以上
とカルボン酸又はその誘尋体、たとえば酢酸ビニル、エ
チルアクリレートとの共重合体である。特ｌこ、酢酸ビ
ニル含有量５〜５０重自製くとも一種とエチレンとの共
重合体であり、かつＪＩＳ Ｋ ６７６０で測定した密
度が０．９１５９７ｃｍ’未ｉｔ４であり、 Ｏｆ３
〜ＣＩｏのα−オレフィンの含有量が０５〜ｓｏｉ！１
ｆｉｔ％程度のものである。更にはシンクロペンタジェ
ン、メチルテトラヒドロインデン、メチレンノルボーネ
ン、エチリデンノルボーネン、１．４ヘキヤジエンなど
の共役ジエン及び／又は前記したエチレン性不飽和カル
ボン酸又はその無水物を０．０１〜１０重１ｔ％程度コ
ポリマー成分、グラフト成分などとして含むものも用い
られる。特に好ましくはエチレン−プロピレン−ジエン
共重合体である。The above (b) 1ff1 polyolefin is α-olefin 1. + Toeha is a copolymer of ethylene, phlopyrene, butene and above with carboxylic acid or derivatives thereof, such as vinyl acetate and ethyl acrylate. In particular, it is a copolymer of vinyl acetate content of 5 to 50, self-produced, and ethylene, and the density measured according to JIS K 6760 is 0.91597 cm' or less than 4.
The α-olefin content of ~CIo is 05~soi! 1
It is about fit%. Furthermore, 0.01 to 10% by weight of conjugated dienes such as synchlopentadiene, methyltetrahydroindene, methylenenorbornene, ethylidenenorbornene, and 1.4hexadiene, and/or the above-mentioned ethylenically unsaturated carboxylic acids or their anhydrides. Those contained as copolymer components, graft components, etc. may also be used. Particularly preferred is an ethylene-propylene-diene copolymer.
本発明において、上記したポリオレフィンは二種以上併
用してもよい。また、本発明で用いるポリオレフィン１
００部（重量部、以下同じ）あたり５００部未満であれ
ば、通常のポリオレフィンを併用してもよい。In the present invention, two or more of the above polyolefins may be used in combination. In addition, polyolefin 1 used in the present invention
If it is less than 500 parts per 00 parts (weight parts, the same applies hereinafter), ordinary polyolefins may be used in combination.
本発明は、上記ポリオレフィンをベースとする架橋性組
成物を用いてソケ・ント、エルボ、チーズ、あるいはそ
の他の形状に成形し、必要Ｉζ応じて予めゲル分率にし
て５０％以下の低度架橋状態、又は５０％以上の高度架
橋状態にもたらして現場でのパイプ接続に供される。ま
た、場合によっては未架橋のま＼パイプ接続に供されパ
イプ接続作業中又は接続後充分１こ架橋される。それら
架橋ポリオレフィンパイプ帽子は、たとえばポリエチレ
ンの架橋剤として公知の有機過酸化物の１１ａを含むポ
リオレフィン組成物を用いて成形加熱架橋する、水架橋
性のポリオレフィン組成物を押出成形後水により架橋す
る、あるいはＸ放射線や紫外線に対して感能性を有する
感能性物質を含むポリオレフィン組成物を成形後Ｘ放射
線や紫外線を照射して架橋させるなどの公知の方法にて
製造することができ、本・発明においては、いずれの架
橋法ζこて製造されたものでも用いることができる。The present invention uses a crosslinkable composition based on the above-mentioned polyolefin, and molds it into a socket, elbow, cheese, or other shape, and if necessary, preliminarily converts the gel fraction to 50% or less of low crosslinking. condition, or brought to a highly cross-linked condition of 50% or more and subjected to pipe connection in the field. In addition, in some cases, it is used for pipe connection without being cross-linked, and the pipe is cross-linked once during or after the pipe connection work. These crosslinked polyolefin pipe caps are produced by, for example, molding and heating crosslinking using a polyolefin composition containing 11a, an organic peroxide known as a crosslinking agent for polyethylene, or crosslinking a water crosslinkable polyolefin composition with water after extrusion molding. Alternatively, a polyolefin composition containing a sensitive substance sensitive to X-rays or ultraviolet rays can be produced by a known method such as crosslinking by irradiating with X-rays or ultraviolet rays after molding. In the invention, any crosslinking method ζ trowel produced can be used.
本発明のパイプ継手は、たとえば、有機過酸化物架橋剤
を含むシート状、ペースト状のポリオレフィン組成物の
如き接着剤を用いて架橋ポリオレフィン、未架橋ポリオ
レフィンパイプと接合した場合ても、あるいは接着剤を
用いることなく、上記パイプと表面層同士の加熱溶融に
て接合させた場合においても、通常のポリオレフィンの
架橋体からなるパイプ継手と比較して良好な接合強度を
示す。特に、有機過酸化物架橋剤とポリオレフィンとか
らなる常温で液状、ペースト状、あるいは固体の架橋性
ポリオレフィン組成物を接着剤として用いて接合すると
きは極めて優れた接合強度を示す。The pipe fitting of the present invention can be used even when joined to a crosslinked polyolefin or uncrosslinked polyolefin pipe using an adhesive such as a sheet-like or paste-like polyolefin composition containing an organic peroxide crosslinking agent; Even when the above-mentioned pipe and the surface layer are joined by heating and melting without using the pipe, it shows better joining strength than a pipe joint made of a normal crosslinked polyolefin. In particular, when bonding is performed using a crosslinkable polyolefin composition that is liquid, paste, or solid at room temperature and is composed of an organic peroxide crosslinking agent and a polyolefin as an adhesive, extremely excellent bonding strength is exhibited.
本発明のパイプ継手が優れた接合性を示す理由として、
（ａ）、（ｂＪのα−オレフィン、（Ｃ）のエチレン及
び／又は、併用する通常のポリオレフィンが架橋して、
架橋体の性質を発揮し、かつ、（ａ）のエチレン性不飽
和カルボン酸、（ｂ）のカルボン酸又はその誘導体、（
ｃ）のＯ−０のα−オレフィンの部分が殆んど架橋せず
に残り、この部分が接着性能を発揮する、ことが考えら
れる。The reason why the pipe joint of the present invention exhibits excellent bonding properties is as follows.
(a), (bJ α-olefin, (C) ethylene and/or common polyolefin used together are crosslinked,
exhibiting the properties of a crosslinked product, and (a) ethylenically unsaturated carboxylic acid, (b) carboxylic acid or its derivative, (
It is conceivable that the α-olefin portion of O-0 in c) remains almost uncrosslinked, and this portion exhibits adhesive performance.
以下、実施例、比較例により本発明を一層詳細ｔｃ説明
する。Hereinafter, the present invention will be explained in more detail with reference to Examples and Comparative Examples.
実施例１
密度０．９５ ＦΔｚ、 ＭＩ ５．０９７１０分、７
０３部とから組成物を用い、射出成形后、２ｏ。Example 1 Density 0.95 FΔz, MI 5.09710 min, 7
After injection molding, 2 o.
℃５分の加熱によって日本水道協会規格ＪＷＷＡＢｚ＋
５（Ｐ１下ＪＷＷＡと云う）付図４のｂ形ソケット（呼
び径２５）の寸法の架橋ポリオレフィン継手を得た。By heating for 5 minutes at ℃, it meets the Japan Water Works Association standard JWWABz+.
5 (referred to as JWWA under P1) A crosslinked polyolefin joint having the dimensions of the b-shaped socket (nominal diameter 25) shown in Figure 4 was obtained.
実施例２
密ｇＯ，９５９重ｃｍ％ＭＩ １．５９／ｊ ０分、酢
酸ビニル含有量１０重ｔ％のエチレン−酢ばビニル共重
合体１０（＋６、ビニルトリメトキシン７ ン２．５部
、Ｄ ＯＰ ０．２２部、及びＪ −）＋ ルー錫−ジ
ラウレ−１−０，０５＠がらな仝組成物を射出成形后、
９０℃の温水中に１０時間浸漬して、ゲル分率７４％の
Ｊ ＷＷＡ付図７のＢ形エルボ（呼び径２５）の寸法の
架橋ポリオレフィンパイプ継手を得た。Example 2 Density gO, 959 weight cm% MI 1.59/j 0 minutes, vinyl acetate content 10 weight t% ethylene-acetate vinyl copolymer 10 (+6, vinyl trimethoxine 7) 2.5 parts, After injection molding the composition,
It was immersed in hot water at 90° C. for 10 hours to obtain a crosslinked polyolefin pipe fitting having a gel fraction of 74% and having the dimensions of a B-shaped elbow (nominal diameter 25) in Figure 7 attached to J WWA.
実施例３
実施例２のエチレン−酢酸ビニル共重合体に代って、密
度０．８８５’Δｉ、ＭＩ＋、５ｙ／１０分、ン
フ’ｈ ’含有！１１２２％のエチレン−ブテン−１
共重合体を用いた点のみ異り、実施例２と同寸法、ゲル
分率７５％の架橋ポリオレフィンパイプ継手を得た。Example 3 In place of the ethylene-vinyl acetate copolymer of Example 2, density 0.885'Δi, MI+, 5y/10min, nf'h' included! 1122% ethylene-butene-1
A crosslinked polyolefin pipe fitting having the same dimensions as Example 2 and a gel fraction of 75% was obtained, except that a copolymer was used.
実施例４
実施例１て用いた変性ポリエチレン５０部、実施例２で
用いたエチレン−酢酸ビニル共重合体５０部、Ｄ ＯＰ
２．０部及びＴ ＨＭ Ｂ Ｐ ０．２部とからなる
組成物を用いて実施例１と同方法にて同寸法のゲル分率
８０％の架橋ポリオレフィンパイプ継手を得た。Example 4 50 parts of modified polyethylene used in Example 1, 50 parts of ethylene-vinyl acetate copolymer used in Example 2, DOP
A crosslinked polyolefin pipe fitting having the same dimensions and a gel fraction of 80% was obtained in the same manner as in Example 1 using a composition consisting of 2.0 parts of THMBP and 0.2 parts of THMBP.
実施例５
実施例２て用いたエチレン−酢飯ビニル共重合体７０部
、実施例５で用いたエチレン−ブテン共重合体３０部、
ビニルトリメトキシシラン２．５部、Ｄ ＯＰ ０．２
２部、及びジ−ブチル−錫−ジヲウレ−１−０，，０５
部とからなる組成物を用いて、実施例２と同方法に、ゲ
ル分率７１％のＪＷＷＡ付図９のＢ形チーズ（呼び径２
５Ｘ２５）の寸法の架橋ポリオレフィンパイプ継手を得
た。Example 5 70 parts of the ethylene-vinegar vinyl copolymer used in Example 2, 30 parts of the ethylene-butene copolymer used in Example 5,
Vinyltrimethoxysilane 2.5 parts, D OP 0.2
2 parts, and di-butyl-tin-diurea-1-0,05
Using the same method as in Example 2, using a composition consisting of
A crosslinked polyolefin pipe fitting with dimensions 5x25) was obtained.
実施例６
実施例２で用いたエチレン−酢酸ビニル共重合体５０部
、密度０．９５ ＦΔＬＭＬ １．６ Ｐ／ノのポリエ
チレン５０部、ビニルトリメトキシシラン２．５部、Ｄ
ＯＰ ０．２２部、及び、ジ−ブチル−錫−ジラウレ
ート０．０５部とからなる組成物を用い、実施９′ｌ１
２と同方法番こて同寸法、ゲル分率７５％の架橋ポリオ
レフィンパイプ継手を得た。Example 6 50 parts of the ethylene-vinyl acetate copolymer used in Example 2, 50 parts of polyethylene with a density of 0.95 FΔLML 1.6 P/no, 2.5 parts of vinyltrimethoxysilane, D
Run 9'l1 using a composition consisting of 0.22 parts of OP and 0.05 parts of di-butyl-tin-dilaurate.
A crosslinked polyolefin pipe joint with the same method number and dimensions as No. 2 and a gel fraction of 75% was obtained.
実施例７
実施例１で用いた変性ポリエチレン５０部、実施例２で
用いたエチレン−酢酸ビニル共ｆｉ合体５０部、Ｄ Ｏ
Ｐ ２．０部、及びＴ Ｂ Ｍ ＨＰ ０．２部とから
なる組成物を用い、実施例１と同方法にて同寸法、ゲル
分率８０％の架橋ポリオレフィンパイプ継手を得た。Example 7 50 parts of modified polyethylene used in Example 1, 50 parts of ethylene-vinyl acetate co-fi combination used in Example 2, D O
A crosslinked polyolefin pipe fitting having the same dimensions and a gel fraction of 80% was obtained in the same manner as in Example 1 using a composition consisting of 2.0 parts of P and 0.2 parts of T B M HP.
各実施例、比較例のパイプ継手番ごつき次の接続笑味を
行った。The pipe joint numbers of each example and comparative example were checked, and the following connections were checked.
継手接続法
内径２７咽、外径５４Ｉ１１＋＋１の架橋ポリエチレン
管の差込口外面及び各実鹸例の継手の受口内面の油分及
び水分を乾布で拭きとった後、パイプ差込口端内面を肉
厚の約捧のところまで、約３０の角度で面取りをした。Joint Connection Method After wiping off the oil and moisture on the outer surface of the socket of a cross-linked polyethylene pipe with an inner diameter of 27mm and an outer diameter of 54I11++1 and the inner surface of the socket of the joint of each example with a dry cloth, wipe the inner surface of the pipe insertion end with a dry cloth. I chamfered it at an angle of about 30 to about the thickness.
予め、電気的に加熱しておいた接続冶具嘉こ管及び継手
を挿入し、約２３０℃で２分間加熱した後、該両者を接
続冶具からはなし、別に用意した第１表に示す組成物か
らなる接着剤をすばやく管差込口部に巻付文は塗布した
後、＃！手番こ管を差し込んだ。Insert the electrically heated connecting jig Kako pipe and the fitting in advance, heat them at about 230°C for 2 minutes, remove them from the connecting jig, and add the separately prepared composition shown in Table 1. After quickly applying the adhesive to the pipe insertion port, #! I inserted the hand tube.
差し込んだ接合部の表面温度が約５０℃になるまで、接
合部を動かさないよう、押えつけ、固定させた後、再び
トーチランプで該接合部を約２５０℃迄昇温し、２３０
℃用温度クレヨンが融けた時点で加熱、をやめ、放冷同
化させた。After pressing and fixing the joint without moving it until the surface temperature of the inserted joint reaches approximately 50°C, heat the joint again with a torch lamp to approximately 250°C, and then heat the joint to 230°C.
When the temperature crayon for °C melted, heating was stopped and the mixture was allowed to cool and assimilate.
続いて、継手の残る側を同様の方法で管を接合した。Subsequently, the remaining side of the joint was joined to the tube in the same manner.
予め、フィルム状に成形加工できる接着剤の場合は、管
の差込長さ１８咽と同じ巾１８咽、管外周の１．２倍４
こ相当する１２８ＩＩＩＩ１１長さの短冊状シートにし
ておいて、約２５０℃に加熱した接続冶具力・ら管をは
なした時にすばやく管差込部に該シートを巻付た。In the case of an adhesive that can be formed into a film in advance, the width should be 18 mm, which is the same as the length of the tube to be inserted, and 1.2 times the outer circumference of the tube.
A rectangular sheet with a length of 128III11 corresponding to this was made, and when the tube was released from the connecting jig heated to about 250° C., the sheet was quickly wrapped around the tube insertion part.
予め、フィルム状に成形加工できない接着剤の場合は、
ペースト状とし、１３０℃を上限として、該ペーストを
加温して粘度を下げておき、加熱された管差込部番こす
ばやく、塗りしろを約１８閣にしておいた１はけ１で塗
布した。For adhesives that cannot be formed into a film in advance,
Make it into a paste, heat the paste to an upper limit of 130°C to lower its viscosity, and apply it quickly to the heated pipe insertion part with one brush with a coating margin of about 18 degrees. did.
尚、接合部を一旦５０℃まで冷却した後、再び加熱した
のは、接合部に挿入された接着制組成物中の架橋剤を完
全に分解させるために行なった。It should be noted that the reason why the bonded portion was once cooled to 50° C. and then heated again was to completely decompose the crosslinking agent in the adhesive composition inserted into the bonded portion.
継手接続部の試験
前述の方法で得られたパイプ継手にて接合されたパイプ
について、次の試験を行なった。その試験結果は第１表
の通りであった。Test of Joint Connections The following tests were conducted on the pipes joined using the pipe joints obtained by the method described above. The test results are shown in Table 1.
ヒートサイクル後の水圧破壊試験
該パイプ継手部を中央にして、約８００＋ＩＩＩＩ＋長
さのパイプを切り取り、５に９／αの内圧を力島けた状
態で、継手部を含むパイプ試料を８０℃で１時間加熱２
５℃で１時間冷却、を５サイクｌし繰り返した。その後
、継手部を含む／＜イブ試料を２５℃にて、ＪＩＳ
Ｋ ６７７４の６．８項１こ準して水圧破壊試験を行
なった。Hydraulic fracture test after heat cycle Cut a pipe of approximately 800 + III + length with the pipe joint in the center, and with an internal pressure of 5 to 9/α applied, the pipe sample including the joint was heated at 80°C. Time heating 2
Cooling at 5° C. for 1 hour was repeated for 5 cycles. After that, the JIS sample including the joint part was heated at 25°C.
A hydraulic rupture test was conducted in accordance with Section 6.8 of K 6774.
比較例１
内径２７ ｍ、外径３４咽の架橋ポリエチレンＰｉ、日
本水１１ｉ１１Ａ会規格ＪＷＷＡ Ｂ −１１６イ・
１図４のゾケットＢ形（金属継手）を用いて接続した。Comparative Example 1 Cross-linked polyethylene Pi with an inner diameter of 27 m and an outer diameter of 34 m, Japan Water 11i11A Association Standard JWWA B-116 I.
1 Connection was made using the Zocket B type (metal joint) shown in Figure 4.
試験方法は実施例１に同じ。The test method is the same as in Example 1.
試験結果
ヒートサイクル後の水圧破壊試Ｍ（ｎ＝３）供試した３
試料の内で、２試料は１サイクル［１で、１試料は３サ
イクル目で、いずれも接続部から漏れが発生した。Test results Hydraulic fracture test M (n=3) after heat cycle Test 3
Among the samples, leakage occurred from the connection in two samples in the first cycle [1] and in the third cycle for one sample.
金＠継手を更に増締しヒートサイクルを続けたが、３試
料とし、再開１サイクル目で再び漏れが発生し、水圧破
壊１拭竪を実施するに至らなかった。The gold fitting was further tightened and the heat cycle was continued, but leakage occurred again in the first restart cycle for three samples, and it was not possible to perform the first hydraulic fracture test.
特許出机）、 大日日本電線株式会社 代表者代表取締役 青山幸雄patent application), Dainichi Nippon Electric Cable Co., Ltd. Representative Director Yukio Aoyama
Claims (1)
性されたポリオレフィン、（ｂ）α−オレノインとカル
ボン酸又はその誘導体とのノ（小合陣、＆ ヒ（Ｃｌエ
チレンと０８〜ＣＩＯのα−オレフィンとの共重合体か
らなる群から選ばれた一種又は一種以上をベースとする
架橋性物質で構成されてなる仁とを特徴とするパイプ継
手。IaI polyolefin modified with ethylenically unsaturated carboxylic acid or its anhydride, (b) α-olenoin and carboxylic acid or its derivative (small combination, 1. A pipe fitting characterized by comprising a crosslinkable substance based on one or more types selected from the group consisting of copolymers with olefins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15681681A JPS5857591A (en) | 1981-09-30 | 1981-09-30 | Pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15681681A JPS5857591A (en) | 1981-09-30 | 1981-09-30 | Pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5857591A true JPS5857591A (en) | 1983-04-05 |
Family
ID=15635956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15681681A Pending JPS5857591A (en) | 1981-09-30 | 1981-09-30 | Pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5857591A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6032462U (en) * | 1983-08-10 | 1985-03-05 | 三菱電線工業株式会社 | Hot water piping system in the building |
-
1981
- 1981-09-30 JP JP15681681A patent/JPS5857591A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6032462U (en) * | 1983-08-10 | 1985-03-05 | 三菱電線工業株式会社 | Hot water piping system in the building |
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