JPS5837391A - Polyethylene pipe - Google Patents
Polyethylene pipeInfo
- Publication number
- JPS5837391A JPS5837391A JP56136820A JP13682081A JPS5837391A JP S5837391 A JPS5837391 A JP S5837391A JP 56136820 A JP56136820 A JP 56136820A JP 13682081 A JP13682081 A JP 13682081A JP S5837391 A JPS5837391 A JP S5837391A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene
- water
- pipes
- pipe
- polyethylene pipe
- 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
Landscapes
- Graft Or Block Polymers (AREA)
- Rigid Pipes And Flexible Pipes (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】 エチレンパイプに関する。[Detailed description of the invention] Regarding ethylene pipes.
架橋ポリエチレンよりなるパイプは、可撓性にすぐれて
いるところからガス管、水道管、給湯輸などとして有望
視されている。Pipes made of cross-linked polyethylene are considered promising for use in gas pipes, water pipes, hot water supply, etc. due to their excellent flexibility.
ところが架橋ポリエチレンパイプは非架橋ポリエチレン
パイプに較べてジヨイント性に劣り、また、カス管、水
道ヤ1@として使用するためにはよりすぐれた1lIl
]水肚性などの耐圧性、剛傘耗性か要求される。However, cross-linked polyethylene pipes have inferior joint properties compared to non-cross-linked polyethylene pipes, and they are also better suited for use as waste pipes and water pipes.
] Requires pressure resistance such as water resistance, and rigid abrasion resistance.
本発明者らは、この様な観点から神々研究を重ねた結果
、下記の如き特定の線状低密度ポリエチレンを原材料と
すれは、予想外の1圧強度、ll4M社性を有し、しか
もジヨイント性にすぐれた水架橋ポリエチレンパイプが
得られることを知見した。As a result of repeated research from this perspective, the inventors of the present invention have found that the following specific linear low-density polyethylene is used as a raw material and has unexpected 1-compression strength and 114M strength, and also has joint strength. It was discovered that a water-crosslinked polyethylene pipe with excellent properties could be obtained.
本発明はかかる知見に基づいて完成されたものであり、
mp≧500×ψ−345
〔ただし、mpは示差熱分析法による融点ピーク(°C
)を、ψはJIS K6760に基づく沿曳を表わす
〕
である水架橋ポリエチレンからなるポリエチレンパイプ
である。The present invention was completed based on this knowledge, and mp≧500×ψ−345 [where mp is the melting point peak determined by differential thermal analysis (°C
), ψ represents the elongation based on JIS K6760] This is a polyethylene pipe made of water-crosslinked polyethylene.
本発明において、原材料として用いられる水架橋ポリエ
チレンは、上述の式を満足するものであれば、いずれも
か使用可能であるか、好ましい融点ピーク(mp )の
最高限度は約160°C程度でJJる。In the present invention, any water-crosslinked polyethylene used as a raw material can be used as long as it satisfies the above formula, or the maximum melting point peak (mp) is preferably about 160°C. Ru.
この一点ピークは示差熱分析法にて測定したものであり
、その測定は、神原、藤原輪、[筒分子分析ハンドブッ
ク、3・15・1項、P−178〜188(昭和40年
)、朝食書店に記載の方法によったものである。This single peak was measured by differential thermal analysis, and the measurement was carried out by Kanbara, Rin Fujiwara, [Cylinder Molecule Analysis Handbook, Section 3.15.1, P-178-188 (1965), Breakfast. This is based on the method described in the bookstore.
またJI8 K−6760による8度(ψ)の好まシ
イ範囲は、0.915〜0.970.就中0.918〜
0.940である。The preferred range of 8 degrees (ψ) according to JI8 K-6760 is 0.915 to 0.970. Especially from 0.918
It is 0.940.
かかる水架橋性ポリエチレンとしては、具体的には次の
如きポリエチレン樹脂組成物があげられる。Specific examples of such water-crosslinkable polyethylene include the following polyethylene resin compositions.
即ち、(a)密度0.915〜0.970(7)ポ’)
エチL/ :/、特に直線性の低密度ポリエチレン、
直線性の中密度ポリエチレンに、伽)一般式RR’ S
i Y2 (Rは一価のオレフィン性不飽和を含む炭
化水素基又は、ハイドロカーボンオキシ基Yは加水分解
し得る有機基 R/は基孔又は基Y)で表わされる化合
物と、(c) 140℃以上の温度において上記高分子
重合体に遊−lラジカルを発生させる化合物と(d)シ
ラノール縮合触媒とからなるものである。由)成分とし
ては、シラン化合物として周知のもの、たとンIJヒニ
ルトリエトキシシラン、ビニルトリメトキシシラン、ビ
ニルメチルジメトキシシラン、ヒニルートリス(β−メ
トキシ、エトキシ)シラン等が挙げられる。(C)成分
としては、ジクミルパーオキサイド、2.5−ジメチル
−2,5−ジー(t−ブチルパーオキシ)−ヘキシン−
3,1,3−ビス−(t−ブチルパーオキシ−イソプロ
ピル)−ベンセン等の有機過酸化物架橋剤、アゾビス−
イソブチロニトリル、ジメチルアソジイソジブチレート
等のアゾ化合物類等などか挙げられる。(d)成分とし
ては、ジブチル嗣ジラウレート、#l:tem−Thi
、オクタン酸第−8(カプリル酸第−一)、ナフテン酸
鉛、カプリル歌並鉛、2−エチルヘキサン電鉄、ナフテ
ン酸コバルトのようなカルボン酸塩、チタン酸エステル
およびキレート化物のような有機金属化合物、例えはチ
タン酸テトラブチルエステル、チタン酸テトラノニルエ
ステルおよびビス(アセチルアセトニトリル)ジ−イソ
プロピルチタネート、有機鳥基例えばエチルアミン、ヘ
キシルアミン、ジブチルアミンおよびピリジン、酸類例
えば無&M、酸および詣肪酸等が挙げられる。That is, (a) density 0.915 to 0.970 (7) po')
Ethi L/:/, especially linear low density polyethylene,
For linear medium density polyethylene, the general formula RR'S
i Y2 (R is a hydrocarbon group containing monovalent olefinic unsaturation, or hydrocarbonoxy group Y is a hydrolyzable organic group, R/ is a pore or a group Y), and (c) 140 It consists of a compound that generates free -l radicals in the high molecular weight polymer at temperatures above .degree. C. and (d) a silanol condensation catalyst. Examples of the component include well-known silane compounds such as Taton IJ hinyltriethoxysilane, vinyltrimethoxysilane, vinylmethyldimethoxysilane, and hinyltris(β-methoxy, ethoxy)silane. Component (C) includes dicumyl peroxide, 2,5-dimethyl-2,5-di(t-butylperoxy)-hexyne-
Organic peroxide crosslinking agents such as 3,1,3-bis-(t-butylperoxy-isopropyl)-benzene, azobis-
Examples include azo compounds such as isobutyronitrile and dimethyl asodiisodibutyrate. (d) Components include dibutyl dilaurate, #l:tem-Thi
, carboxylic acid salts such as octanoic acid (caprylic acid primary), lead naphthenate, caprylic lead, 2-ethylhexane, cobalt naphthenate, organometallic acids such as titanate esters and chelates. Compounds such as titanate tetrabutyl ester, titanate tetranonyl ester and bis(acetylacetonitrile) di-isopropyl titanate, organic radicals such as ethylamine, hexylamine, dibutylamine and pyridine, acids such as free &M, acids and fatty acids etc.
(a)成分100i[置部(以下、重凰部)あたりの各
成゛分の配合毎は(b)成分0.1〜50部、好ましく
は0.5〜IO部、(c)成分0.05〜1.5部、好
ましくは0.01〜0.2部、(d)成分0.005〜
5部、好ましくは0.O1〜0.5部である。(a) component 100i [each component per loading part (hereinafter referred to as "heavyweight part")] (b) component 0.1 to 50 parts, preferably 0.5 to IO parts, (c) component 0 .05 to 1.5 parts, preferably 0.01 to 0.2 parts, component (d) 0.005 to
5 parts, preferably 0. 1 to 0.5 parts of O.
本発明のパイプは、上記した水架橋性ポリエチレンを公
知の成形・架橋法及び条件に従つて製造できる。たとえ
ば、数Vt1Itl後の短尺物の製造には押出成形した
未架橋ポリエチレン管を所定寸法に切断し、常温乃至1
00’Cの水浴中に、好ましくはゲル分率にして少くと
も20%、就中少くとも50%に達するに競する時間浸
漬することにより、また、100m以上の長尺ものの製
造にはドラム巻きされた未架橋ポリエチレン管をドラム
ごと水浴中に任意時間浸漬することにより容易に製造す
ることができる0本発明パイプの肉厚は、内径により変
り、内径が大であるほど肉厚を大とするか、たとえは、
内径20M、50MM、100ff、200u及び40
01Mの場合、それぞれ、2〜51N+ff、3〜7g
a+15〜15m、 8〜2 Qso*、及ヒ15〜3
0鱈程度か適当である。The pipe of the present invention can be produced using the above-described water-crosslinkable polyethylene according to known molding/crosslinking methods and conditions. For example, to manufacture short products after several Vt1Itl, extrusion-molded uncrosslinked polyethylene pipes are cut into predetermined dimensions, and
By immersing in a water bath at 00'C for a period of time to reach a gel fraction of preferably at least 20%, particularly at least 50%, and for manufacturing long products of 100 m or more, drum winding is also used. The wall thickness of the pipe of the present invention varies depending on the inner diameter, and the larger the inner diameter, the larger the wall thickness. Or, for example,
Inner diameter 20M, 50MM, 100ff, 200u and 40
For 01M, 2~51N+ff, 3~7g, respectively
a+15~15m, 8~2 Qso*, and h15~3
It's about 0 cod or so.
また、ゲル分率にして少くとも50%の高架槁曵のもの
が好ましい。Further, it is preferable that the gel fraction is at least 50%.
以下、実施例、比較例により本発明を一触詳細に説明す
る。Hereinafter, the present invention will be explained in detail with reference to Examples and Comparative Examples.
実施例、比較例
表に示した組成のポリエチレン樹脂組成物を用いてパイ
プ状に押出成形し、これを90℃の淘編中に15時間浸
漬して、表に示した形状のパイプを得た。EXAMPLES AND COMPARATIVE EXAMPLES A polyethylene resin composition having the composition shown in the table was extruded into a pipe shape, and this was immersed for 15 hours in a knitting machine at 90°C to obtain a pipe having the shape shown in the table. .
かくして得られたパイプの耐水圧強度、釘jh耗性、ジ
ョイントフイテイングの寿命についての試験を行いその
評価結果を表に併記した。The thus obtained pipes were tested for water pressure strength, nail abrasion resistance, and joint fitting life, and the evaluation results are also listed in the table.
(1) 耐水圧強度:JIS K−6774に準じ
た。(1) Water pressure resistance strength: According to JIS K-6774.
(2)l摩耗性:ASTMAθ1242のサンド:水=
80(1:600厘lのスラリーをパイプから切取った
2部M巾、101長のビースを攬件棒として1200r
pmで1遍間攬件し、ピースの供試前後の垂菫減を%で
表示した。(2) Abrasion resistance: ASTM Aθ1242 sand: water =
80 (1: 600 liters of slurry was cut from a pipe, and a M-width, 101-length bead was used as a transporting rod for 1200 liters.
pm for one hour, and the reduction in vertical violet before and after the test of the piece was expressed as a percentage.
ジヨイント・フイテイング性ニア00jljlのパイプ
に日本水道協会規格−B−116(7)ジヨイント・フ
イテイングを取付けて、内圧6#/dにて80°CX1
時間、20’CX1時間を1サイクルとしてヒートサイ
クルを行ない、内圧か0.5 kti/d低下するサイ
クル数で表示した。Attach the Japan Water Works Association Standard-B-116 (7) joint fitting to a pipe with a diameter of near 00jljl and heat it to 80°CX1 at an internal pressure of 6#/d.
A heat cycle was performed with 20'C x 1 hour as one cycle, and the number of cycles at which the internal pressure decreased by 0.5 kti/d was expressed.
(以下余白)
手続補正書(自発)
1、 Jr件の表示
昭和り6年 特許 願第136820号2、発明の名称
ポリエチレンノ(イブ3 補正をする者
事件との関係 特許出願人
氏 名(名b・)人日日不電線株式会社3、補正の内容
(1)明m曹第1頁の「特許請求の範囲」會別紙の通り
に訂正jゐ0
(2)同省第1頁下から第8行に「水架橋」とあるr「
水架橋性」に訂正する。(Leaving space below) Procedural amendment (voluntary) 1. Indication of Jr. 1936 Patent Application No. 136820 2. Title of invention Polyethylene (Eve) 3. Relationship with the case of the person making the amendment Name of patent applicant (first name) b.) Nichifuden Wire Co., Ltd. 3, Contents of the amendment (1) Correction as per the appendix "Scope of Claims" on page 1 of the ministry (2) Sections from the bottom of page 1 of the ministry Line 8 says “water bridge” r “
Corrected to "water crosslinking".
(3)同省第2頁、第8行に「橋ポリエチレンパイプ」
とある=5r倫性ポリエチレ/からなるポリエチレンパ
イプ」に訂正する。(3) “Bridge polyethylene pipe” on page 2, line 8 of the Ministry
Corrected to ``Polyethylene pipe made of 5R polyethylene.''
(4)同書第2@、第15行に「である水架橋ポリエチ
レン」とある會「會満足するポリエチレンパイプスと丁
ゐ水架橋性ポリエチレン」に訂正′T6゜
(5)同曹第2頁、第17〜18行の「水架橋」葡削除
する。(4) In the 2nd line of the same book, line 15, ``Water-crosslinked polyethylene'' is corrected to ``Water-crosslinked polyethylene that satisfies the needs of polyethylene pipes.'' (5) 2nd page of the same book, Delete the "water bridge" in lines 17-18.
(6)同誓第5頁、第9行の「従って」の次に「処理す
ることに工って」を加入する0
爵ff請求の範囲
mp≧500×ψ−:う45
〔ただし、mpは示差熱分析法による融解ピークCC)
’r、ψはJIS K6760に基づく冨度娑表わす
〕
ポリエチレ/から7i:にと7狩偵と丁^ボ1ノエチレ
ンパイプ(6) On page 5, line 9 of the same oath, add "in order to process" after "therefore". is the melting peak CC determined by differential thermal analysis)
'r, ψ represent the density based on JIS K6760] Polyethylene/From 7i: Nito 7 Hunter Detective and Ding^Bo 1 No Ethylene Pipe
Claims (1)
を、ψはJ I S K 6760 ニ基づく密度を
表わす〕 である水架橋性ポリエチレンからなることを特徴とする
ポリエチレンパイプ[Claims] mp>500Xψ-345 [However, mp is the melting peak (C) determined by differential thermal analysis.
, ψ represents the density based on JIS K 6760 Ni] A polyethylene pipe characterized by being made of water-crosslinkable polyethylene.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56136820A JPS5837391A (en) | 1981-08-31 | 1981-08-31 | Polyethylene pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56136820A JPS5837391A (en) | 1981-08-31 | 1981-08-31 | Polyethylene pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5837391A true JPS5837391A (en) | 1983-03-04 |
Family
ID=15184266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56136820A Pending JPS5837391A (en) | 1981-08-31 | 1981-08-31 | Polyethylene pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5837391A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6040895A (en) * | 1983-08-11 | 1985-03-04 | 三菱電線工業株式会社 | Method of controlling fluid transport pipe |
US4870136A (en) * | 1985-11-30 | 1989-09-26 | Mitsui Pertrochemical Industries, Ltd. | Molecular oriented, silane-crosslinked ultra-high-molecular-weight polyethylene molded article and process for preparation thereof |
JPH02253076A (en) * | 1989-03-28 | 1990-10-11 | Osaka Gas Co Ltd | Cross-linked polyethylene pipe for hot water supply and manufacture thereof |
KR20190091306A (en) | 2017-03-24 | 2019-08-05 | 닛폰세이테츠 가부시키가이샤 | Method of manufacturing steel sheet |
-
1981
- 1981-08-31 JP JP56136820A patent/JPS5837391A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6040895A (en) * | 1983-08-11 | 1985-03-04 | 三菱電線工業株式会社 | Method of controlling fluid transport pipe |
US4870136A (en) * | 1985-11-30 | 1989-09-26 | Mitsui Pertrochemical Industries, Ltd. | Molecular oriented, silane-crosslinked ultra-high-molecular-weight polyethylene molded article and process for preparation thereof |
US4902460A (en) * | 1985-11-30 | 1990-02-20 | Mitsui Petrochemical Industries, Ltd. | Process for preparation of molecularly oriented, silane-crosslinked ultra-high-molecular-weight polyethylene molded article |
JPH02253076A (en) * | 1989-03-28 | 1990-10-11 | Osaka Gas Co Ltd | Cross-linked polyethylene pipe for hot water supply and manufacture thereof |
KR20190091306A (en) | 2017-03-24 | 2019-08-05 | 닛폰세이테츠 가부시키가이샤 | Method of manufacturing steel sheet |
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