JPH02214646A - Tube fixed by polymer and its manufacture - Google Patents
Tube fixed by polymer and its manufactureInfo
- Publication number
- JPH02214646A JPH02214646A JP3491289A JP3491289A JPH02214646A JP H02214646 A JPH02214646 A JP H02214646A JP 3491289 A JP3491289 A JP 3491289A JP 3491289 A JP3491289 A JP 3491289A JP H02214646 A JPH02214646 A JP H02214646A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- molecular weight
- ultra
- weight polymer
- high molecular
- 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
- 229920000642 polymer Polymers 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 229920006158 high molecular weight polymer Polymers 0.000 claims abstract description 44
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 25
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 238000005507 spraying Methods 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 229920001519 homopolymer Polymers 0.000 description 5
- 239000011162 core material Substances 0.000 description 4
- 230000009477 glass transition Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はチューブを超高分子量ポリマーで良好に固着し
たポリマーで固着されたチューブ又はチューブ束及びそ
の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tube or a tube bundle in which the tubes are well fixed with an ultra-high molecular weight polymer, and to a method for manufacturing the same.
本発明は例えば熱交換器などに用いられる。The present invention is used, for example, in heat exchangers.
従来、熱交換用チューブとしては、金属製のチューブが
広く使用されてきた。金属は熱伝導率が大きく熱交換用
材料としては適するが、用途によっては、腐蝕性の物質
を流すため、耐腐蝕性が必要となる。またチェーブ内に
スケールが付着しやすいという欠点がある。加えて金属
性チューブを固着するには溶接等によって各チューブを
固着させる必要があり大変手間がかかる。Conventionally, metal tubes have been widely used as heat exchange tubes. Metals have high thermal conductivity and are suitable as heat exchange materials, but depending on the application, corrosion resistance is required because corrosive substances are flowing through them. Another disadvantage is that scale tends to adhere to the inside of the tube. In addition, in order to fix the metallic tubes, it is necessary to fix each tube by welding or the like, which is very time consuming.
上記のような問題点から、最近では、フッ素樹脂等の樹
脂製熱交換器用チューブが開発されている。フッ素樹脂
製熱交換器用チューブは、優れた耐熱性、耐腐蝕性を存
するとともに、非粘着性であるためスケールの付着が起
こりに（いという優れた点を有している。ところがこの
フッ素樹脂を熱交換器用チューブに用いる場合、多数の
チューブを固着して一体化する必要があり、しかもその
際に、もれの′ない様にしっかり固着する必要があり、
この点が困難であ；た、 ′特開昭６２−２１５
２４号公報、特開昭６４−１５２０号公報等にはチュー
ブを融着させることにより一体化する方法が開示されて
いるが、単に接触させて加熱融着させたり、チューブ内
外に圧力差をつけ、その差圧を用いて加熱融着する方法
であり、融着が不十分であり、チューブが潰れたり、シ
ール性が不十分である。Due to the above-mentioned problems, heat exchanger tubes made of resin such as fluororesin have recently been developed. Tubes for heat exchangers made of fluororesin have excellent heat resistance and corrosion resistance, and are non-adhesive, so they do not attract scale. When used in heat exchanger tubes, it is necessary to bond and integrate a large number of tubes, and at that time, it is necessary to firmly fix them to prevent leakage.
This point was difficult;
No. 24, Japanese Patent Application Laid-open No. 1520/1984, etc., disclose methods of integrating tubes by fusing them together, but it is not possible to simply bring them into contact and heat-fuse them, or to create a pressure difference between the inside and outside of the tubes. This is a method of heating and fusing using the differential pressure, but the fusing is insufficient, the tube may collapse, and the sealing performance is insufficient.
本発明は、上記のような従来法の問題点、すなわち、熱
交換器等に用いられるチューブを固着する際の不都合な
点、及び得られるチューブの融着不良等の問題点を解決
した、ポリマーで固着されたチューブを提供することに
ある。The present invention solves the problems of the conventional method as described above, namely, the inconvenience when fixing tubes used in heat exchangers, etc., and the problems such as poor fusion of the resulting tubes. The purpose is to provide a tube that is fixed in place.
〔課題を解決するための手段おび作用〕本発明は
（１） 超高分子量ポリマーの板状あるいはブロック
状物で固着されたチューブ又はチューブ束（２）チュー
ブが、樹脂製である前記第１項記載のチューブ又はチュ
ーブ束
（３）延伸された超高分子量ポリマーからなる板状物あ
るいはブロック状物に１箇又は複数個の穴をあけ、各人
にチューブを通した状態で該板状物あるいはブロック状
物を加熱収縮させてチューブを固着することを特徴とす
るポリマーで固着されたチューブ又はチューブ束の製造
方法を提供する。[Means and effects for solving the problems] The present invention provides (1) a tube or tube bundle fixed with a plate-like or block-like object of an ultra-high molecular weight polymer; (2) the tube is made of resin; Tube or tube bundle described above (3) One or more holes are made in a plate or block made of a stretched ultra-high molecular weight polymer, and each person passes the tube through the plate or block. Provided is a method for manufacturing a tube or tube bundle fixed with a polymer, characterized in that the tubes are fixed by heat-shrinking a block-like object.
以下に本発明の詳細な説明する。The present invention will be explained in detail below.
本発明において、板状物あるいはブロック状物は多角形
（例えば四角形）、円形、楕円形等任意の形状の板状物
およびその厚さが増加した柱状物（例えば四角柱、多角
柱、円柱等の形状物、）及びそれらの形状が曲面形状に
なったものなどを含む。In the present invention, plate-like objects or block-like objects include plate-like objects of arbitrary shapes such as polygons (e.g. quadrangles), circles, ellipses, etc., and columnar objects with increased thickness (e.g. square prisms, polygonal prisms, cylinders, etc.). ) and curved surfaces.
固着の対象となるチューブの数は、１本以上が可能であ
るが通常、チューブ束として用いられる。Although the number of tubes to be fixed can be one or more, they are usually used as a tube bundle.
また、本発明でいう固着とは第１〜４図で明らかなとお
り、チューブ又はチューブ束と板状物などとは直接又は
間接的に気密に固定されており、チューブが少くとも板
状物などのしめっけ作用によって固定された状態を指す
。Furthermore, as is clear from FIGS. 1 to 4, fixing in the present invention means that the tube or tube bundle and the plate-like object are directly or indirectly fixed airtightly, and the tube is fixed to at least the plate-like object, etc. Refers to the state in which it is fixed by the plating action.
本発明に述べる超高分子量ポリマーは、重量平均分子量
が８０万以上のポリマーであり、代表的な例としてはυ
ＨＭＷ−ＰＩ！で代表されるポリオレフィン系ポリマー
及び含フツ素ポリマーが挙げられる。The ultra-high molecular weight polymer mentioned in the present invention is a polymer with a weight average molecular weight of 800,000 or more, and a typical example is υ
HMW-PI! Examples include polyolefin polymers and fluorine-containing polymers represented by .
好ましくはＰＴＦＥである。Preferably it is PTFE.
ここに述べるＰＴＦＥとは、テトラフルオロエチレン（
以後ＴＦＥと略称する）のホモポリマーあるいはＴＦＥ
を７０モル％以上、好ましくは９０モル％以上含有した
共重合体およびそれらからなるブレンドポリマーである
。そして本発明に用いられるＰＴＦＥはそのうち数平均
分子量、が８０万以上、好ましくは１００万以上、さら
に好ましくは２００万以上の超高分子量体である。The PTFE mentioned here refers to tetrafluoroethylene (
(hereinafter abbreviated as TFE) homopolymer or TFE
copolymers containing 70 mol% or more, preferably 90 mol% or more, and blend polymers made of these. The PTFE used in the present invention is an ultra-high molecular weight material having a number average molecular weight of 800,000 or more, preferably 1,000,000 or more, and more preferably 2,000,000 or more.
数平均分子量が２００万以上のＴＦＨのホモポリマーが
とくに好ましい。また上記のＰＴＦＥを主たるマトリッ
クス樹脂成分として用い、ガラス繊維や炭素繊維、グラ
ファイト、二硫化モリブデン、ブロンズ、酸化ジルコニ
ウム、珪酸ジルコニウム等の無機充填材及び芳香族ポリ
アミド繊維や芳香族ポリエステル繊維等の有機系充填材
の少なくとも１種を６０重量％以下に配合した充填材入
りＰＴＦＥも本発明に用いることが可能である。A homopolymer of TFH having a number average molecular weight of 2 million or more is particularly preferred. In addition, the above PTFE is used as the main matrix resin component, and inorganic fillers such as glass fiber, carbon fiber, graphite, molybdenum disulfide, bronze, zirconium oxide, and zirconium silicate, and organic fillers such as aromatic polyamide fiber and aromatic polyester fiber are used. Filled PTFE containing at least one filler in an amount of 60% by weight or less can also be used in the present invention.
また上記ＰＴＦＥには必要に応じて１０重量部以下の範
囲で、他の熱可塑性樹脂や、各配合剤を加えることがで
きる。Further, other thermoplastic resins and various compounding agents can be added to the PTFE in an amount of 10 parts by weight or less, if necessary.
ここで述べるυｌ（ＭＷ−ＰＣとは、エチレンが９０重
量％以上のホモポリマー又はコポリマーである。The υl (MW-PC) described here is a homopolymer or copolymer containing 90% by weight or more of ethylene.
そして本発明に用いられるＵＨＭＷ−ＰＨとはそのうち
、重量平均分子量あるいは数平均分子量が８０万以上、
好ましくは１００万以上の超高分子量体である。特にエ
チレンホモポリマーが好ましい。The UHMW-PH used in the present invention has a weight average molecular weight or number average molecular weight of 800,000 or more,
Preferably it is an ultra-high molecular weight substance of 1 million or more. Particularly preferred is ethylene homopolymer.
ここに述べる超高分子量ポリマーはシール性が高いこと
、緻密であることが望ましい。具体的には、ＰＴＦＥで
は比重が１．８以上、好ましくは２．０以上、更に好ま
しくは２．１以上のＰＴＦＥである。比重が１．８未満
では多孔体となりシール性、剛性等の物理的性質が低下
し、本発明の目的には好ましくない、 ＵＨＭＷ−ＰＥ
では比重が０．８以上、好ましくは０．９以上のもので
ある。It is desirable that the ultra-high molecular weight polymer described here has high sealing properties and is dense. Specifically, PTFE has a specific gravity of 1.8 or more, preferably 2.0 or more, and more preferably 2.1 or more. If the specific gravity is less than 1.8, the UHMW-PE becomes porous and physical properties such as sealing performance and rigidity deteriorate, which is not preferable for the purpose of the present invention.
The specific gravity is 0.8 or more, preferably 0.9 or more.
以上のような超高分子量をもったポリマー以外のポリマ
ーでは、加熱収縮させた場合十分に収縮せず、チューブ
にしかつり固着しないため好ましくない。Polymers other than the above-mentioned ultra-high molecular weight polymers are not preferred because they do not shrink sufficiently when heated and do not form into a tube and do not stick.
ＰＴＦＥ ［１（ＭＷ−ＰＥ等の超高分子量ポリマーは
、延伸されて配向されると、熱収縮性を帯びる性質を有
し、本発明はこの性質を利用したものである。この延伸
は、そのポリマーのガラス転移点以上溶融点以下で少な
くとも２軸方向に、即ち２軸以上に配向されることが好
ましい。Ultra-high molecular weight polymers such as PTFE [1 (MW-PE) have a property of being heat-shrinkable when stretched and oriented, and the present invention takes advantage of this property. It is preferable that the polymer be oriented in at least two axes, that is, biaxially or more, above the glass transition point and below the melting point of the polymer.
延伸を行う温度は、使用する超高分子量ポリマーのガラ
ス転移点以上溶融点以下であればよいが、ＰＴＦＥの場
合好ましくは２００℃以上、さらに好ましくは２５０″
Ｃ以上の温度範囲が選択される。The stretching temperature may be above the glass transition point and below the melting point of the ultra-high molecular weight polymer used, but in the case of PTFE it is preferably 200°C or above, more preferably 250°C.
A temperature range of C or higher is selected.
延伸の倍率は、２倍以上であれば本発明の効果が十分得
られるが、好ましくは３倍以上、さらに好ましくは４倍
以上である。倍率が大きくなると、熱収縮を行った時の
収縮量が大きくなり、より強くチューブに固着されるか
らである。The effects of the present invention can be sufficiently obtained if the stretching ratio is 2 times or more, but preferably 3 times or more, more preferably 4 times or more. This is because as the magnification increases, the amount of shrinkage increases when heat shrinking is performed, and the material is more firmly fixed to the tube.
延伸の方法としては、特願昭５８−１５１５８５号公報
、特願昭６１−１２８１９１号公報等に開示しである方
法が良好に使用できる。即ち、超高分子量ポリマーを、
そのガラス転移点以上溶融点以下の温度範囲に加熱し、
または、そのガラス転移点以上溶融点以下の温度範囲内
に加熱された部分と、その外殻にその溶融点以上に加熱
された部分とをもつように温度調節し、その超高分子量
ポリマーをその溶融点以上に加熱された成形グイ内で圧
縮するか、あるいは押出すことにより延伸させる方法で
ある。As the stretching method, methods disclosed in Japanese Patent Application No. 58-151585, Japanese Patent Application No. 61-128191, etc. can be used favorably. That is, ultra-high molecular weight polymer,
Heating to a temperature range above the glass transition point and below the melting point,
Alternatively, the ultra-high molecular weight polymer is heated by adjusting the temperature so that it has a part heated to a temperature range above the glass transition point and below the melting point, and a part heated above the melting point in the outer shell. This is a method in which the material is stretched by compression or extrusion in a molded gouer heated above its melting point.
また、その際グイ内で圧縮力あるいは押出力により超高
分子量ポリマーをプラグフローさせて延伸することも有
効である。この時、少なくもグイ内表面にまたは超高分
子量ポリマー表面に潤滑剤を存在させることがより好ま
しい。At this time, it is also effective to cause the ultra-high molecular weight polymer to plug flow and stretch within the goo using compressive force or extrusion force. At this time, it is more preferable that a lubricant be present at least on the inner surface of the goo or on the surface of the ultra-high molecular weight polymer.
このようにして得られた、均一に延伸された超高分子量
ポリマーの板状物又はブロック状物に、加熱収縮の程度
とチューブの外径を考慮して適当な寸法の穴をあける。A hole of an appropriate size is made in the uniformly stretched ultra-high molecular weight polymer plate or block obtained in this way, taking into account the degree of heat shrinkage and the outer diameter of the tube.
好ましくは、加熱収縮後の穴の内径が、チューブの外径
の９５％以下となる様な寸法の穴である。また穴の形状
は、チューブの断面形状と相似な形状が好ましい。Preferably, the size of the hole is such that the inner diameter of the hole after heat shrinkage is 95% or less of the outer diameter of the tube. Further, the shape of the hole is preferably similar to the cross-sectional shape of the tube.
本発明で用いるチューブの材質は特に限定しない、樹脂
以外の材質のチューブを用いる場合は該超高分子量ポリ
マーと融着しないが、強い熱収縮力でチューブを締めつ
け密着するため本発明品は十分なシール性が保て優れた
チューブ束となる。The material of the tube used in the present invention is not particularly limited. If a tube made of a material other than resin is used, it will not fuse with the ultra-high molecular weight polymer, but the product of the present invention will tighten and adhere tightly with the strong heat shrinkage force. It maintains sealing properties and creates an excellent tube bundle.
また本発明品は従来の金属製チューブの場合の様に溶接
をする必要がなく、単に加熱するだけで容易に製造でき
るという点で優れている。Furthermore, the product of the present invention is superior in that it does not require welding unlike conventional metal tubes and can be easily manufactured by simply heating.
樹脂製チューブを用いると、前記した様に金属製チュー
ブの問題点を解決でき好ましい、また樹脂製チューブの
場合加熱収縮の際に、該超高分子量ポリマーと融着しや
すいので好ましい。特にフッ素樹脂型チェーブが好まし
い。It is preferable to use a resin tube because it can solve the problems of metal tubes as described above, and a resin tube is preferable because it easily fuses with the ultra-high molecular weight polymer during heat shrinkage. Particularly preferred is a fluororesin type chamber.
チューブの形状は一般的に円筒状であるが、角柱状物の
中空状のものでも本発明に使用できる。The shape of the tube is generally cylindrical, but hollow prismatic tubes can also be used in the present invention.
次に穴をあけた超高分子量ポリマーにチューブを通し加
熱収縮させることにより、超高分子量ポリマーで固着さ
れた本発明のチューブ束を得る。Next, the tube bundle of the present invention fixed with the ultra-high molecular weight polymer is obtained by passing the tube through the ultra-high molecular weight polymer with holes and shrinking it by heating.
この過程を第１図（ａ）、 （ｂ）を用いて以下に説明
する。This process will be explained below using FIGS. 1(a) and 1(b).
第１図（ａ）において、１は穴のあいた延伸された超高
分子量ポリマーの板状物の例であり、加熱収縮前の状態
である。２は使用するチューブである。図のようにチュ
ーブ２を穴３に通した状態で超高分子量ポリマーの板状
物ｌを加熱すると（ｂ）に示したとおり収縮した超高分
子量ポリマー４となり、チューブ２を固着する。In FIG. 1(a), reference numeral 1 is an example of a plate-like object made of a stretched ultra-high molecular weight polymer with holes, and is in a state before heat shrinkage. 2 is the tube used. When the ultra-high molecular weight polymer plate 1 is heated with the tube 2 passed through the hole 3 as shown in the figure, the ultra-high molecular weight polymer 4 shrinks as shown in (b), and the tube 2 is fixed.
チューブとして樹脂製チューブ等、剛性の低いものを使
用する場合には、該超高分子量ポリマの収縮力で管が潰
れないように第２図（ａ） 、 （ｂ）に示したような
剛体の芯材５をチューブ２の中にあらかじめ通した状態
で加熱すると管の潰れが起らず、かつチューブ２と超高
分子量ポリマー１とがよく密着して好ましい。When using a tube with low rigidity, such as a resin tube, use a rigid tube as shown in Figures 2 (a) and (b) to prevent the tube from being crushed by the contraction force of the ultra-high molecular weight polymer. It is preferable to heat the core material 5 while passing it through the tube 2 in advance because the tube will not collapse and the tube 2 and the ultra-high molecular weight polymer 1 will come into close contact with each other.
また第２図で６は超高分子量ポリマー１をその上に置く
ための金属系、７は６の金属系を固定し、またチューブ
２、剛体の芯材５の端をそろえるための土台である。こ
れら６．７を用いると、収縮後において、収縮した超高
分子量ポリマー４の端からはみ出るチューブ２の長さ８
をコントロールできるので好ましい。Further, in Fig. 2, 6 is a metal system on which the ultra-high molecular weight polymer 1 is placed, and 7 is a base for fixing the metal system 6 and for aligning the ends of the tube 2 and the rigid core material 5. . When these 6.7 are used, the length 8 of the tube 2 protruding from the end of the contracted ultra-high molecular weight polymer 4 after shrinkage is
This is preferable because it allows you to control.
また、チューブに金属製のものを用いる場合、チューブ
の表面に微小な凹凸があるチューブを用いる場合、及び
フッ素含有樹脂等接着性の低い樹脂製のチューブを用い
る場合、第３図に示したように、チューブ２と超高分子
量ポリマー１との間に熱可塑性ポリマー製フィルム９を
挟んだ状態でこのフィルムを溶融状態にして１を収縮さ
せるとチューブ２と超高分子量ポリマー１との密着性が
向上して好ましい。この熱可塑性ポリマー製フィルムと
しては、ＰＦＡ、ＦＥＰ、ＰＶｄＦ、ＰＶＦｌ等のフッ
素含有ポリマーのフィルムが好ましい。In addition, when using a metal tube, when using a tube with minute irregularities on the surface of the tube, when using a tube made of a resin with low adhesiveness such as a fluorine-containing resin, as shown in Figure 3, When a thermoplastic polymer film 9 is sandwiched between the tube 2 and the ultra-high molecular weight polymer 1 and the film is melted and 1 is shrunk, the adhesion between the tube 2 and the ultra-high molecular weight polymer 1 is improved. Improved and desirable. The thermoplastic polymer film is preferably a fluorine-containing polymer film such as PFA, FEP, PVdF, or PVFl.
収縮の条件としては、超高分子量ポリマーｌがＰＴＦＥ
の場合温度は２００°Ｃ以上、さらに好ましくは２５０
℃以上である。収縮率は超高分子量ポリマー１が完全に
収縮した状態を１００％収縮とすると、９５％収縮以下
更には９０％収縮以下が耐久性等の面から好ましい。加
熱時間は、温度と収縮率との関係で決定され、はぼ１〜
６００分の範囲で、適宜選択されるが、好ましくは５〜
２４０分、さらに好ましくは１０〜１２０分程度である
。The shrinkage conditions are that the ultra-high molecular weight polymer l is PTFE.
In this case, the temperature is 200°C or higher, more preferably 250°C.
℃ or higher. The shrinkage rate is preferably 95% or less, more preferably 90% or less, from the viewpoint of durability, etc., assuming that the state in which the ultra-high molecular weight polymer 1 is completely shrunk is defined as 100% shrinkage. Heating time is determined based on the relationship between temperature and shrinkage rate, and ranges from 1 to
Appropriately selected within the range of 600 minutes, preferably 5 to 600 minutes.
It is about 240 minutes, more preferably about 10 to 120 minutes.
加熱の方法は、超高分子量ポリマー１が収縮すればいか
なる方法でもよいが、加熱炉中に入れるか、加熱気体を
吹きつける方法が容易でかつ確実である。Any heating method may be used as long as the ultra-high molecular weight polymer 1 contracts, but methods such as placing it in a heating furnace or blowing heated gas are easy and reliable.
チューブが樹脂製の場合チューブ２も同時に加熱し管の
外側を溶融状態にし、超高分子量ポリマー１を融点以上
に加熱し収縮させると、チューブ２と超高分子量ポリマ
ー１とが融着して好ましい。If the tube is made of resin, tube 2 is also heated at the same time to melt the outside of the tube, and ultra-high molecular weight polymer 1 is heated above its melting point to shrink, which is preferable because tube 2 and ultra-high molecular weight polymer 1 are fused together. .
第１図に示したように、適度に収縮された超高分子量ポ
リマー４は、チューブ２にしっかり密着し、すき間はな
く優れたシール性を有するチューブ束をつくる。As shown in FIG. 1, the moderately shrunk ultra-high molecular weight polymer 4 tightly adheres to the tubes 2, creating a tube bundle with no gaps and excellent sealing properties.
本発明の超高分子量ポリマーで固着されたチューブ束は
、熱交換器用チューブ束として用いると、優れたシール
性を示した、かつ製造方法は従来のものより簡単に製造
できるという利点を有する。The tube bundle fixed with the ultra-high molecular weight polymer of the present invention, when used as a tube bundle for a heat exchanger, has the advantage that it exhibits excellent sealing properties and can be manufactured more easily than conventional tube bundles.
実施例１
フリーベーキング法によって製造されたポリテトラフル
オロエチレンのホモポリマーからなる約４０ｍ＋ｓ厚の
シート（日本パルカー エ業■製パルフロン［有］、シ
ートＮｏ、７０００ 、比重２．１、数平均分子量約５
００万）をＰＴＦＥ素地として用い、特願昭６１−１２
８１９１号公報に示した圧縮成形法と同様の方法で面積
比で約２倍に２軸延伸した。Example 1 A sheet approximately 40 m+s thick made of a homopolymer of polytetrafluoroethylene produced by a free baking method (Palflon Co., Ltd., manufactured by Nippon Palcar Co., Ltd., sheet No. 7000, specific gravity 2.1, number average molecular weight approx. 5
0,000,000) as the PTFE base material, patent application 1986-12
Biaxial stretching was carried out to approximately double the area ratio using a method similar to the compression molding method disclosed in Japanese Patent No. 8191.
すなわち、２２０℃に予熱した圧縮金型の内表面にシリ
コーンオイルから成る潤滑剤を塗布し、２２０℃に予熱
したＰＴＦＥ素地を該圧縮金型で圧縮して面積比で約２
倍に延伸し、そのまま金型を室温に冷却してから取り出
した。約２倍に２軸延伸されたＰＴＦＥシートから、直
径１００ｍｍの円板を削り出し、第４図（ａ）のように
、直径５１１Ｉｌｌの円形穴１１を６４個あけた２軸延
伸されたＰＴＦＥ板１０を作った。That is, a lubricant made of silicone oil is applied to the inner surface of a compression mold that has been preheated to 220°C, and a PTFE base material that has been preheated to 220°C is compressed with the compression mold to give an area ratio of approximately 2.
The mold was stretched to double its original size, and the mold was cooled to room temperature before being taken out. A 100 mm diameter disk is machined from a PTFE sheet that has been biaxially stretched to about twice the size, and 64 circular holes 11 with a diameter of 511 Ill are drilled in the biaxially stretched PTFE plate as shown in FIG. 4(a). I made 10.
次に外径４ｍｍ、内径３ｍｓ、肉厚０．５ａｍのＰＴＦ
Ｅ）］肉チューブ１３（日本バルカーエ業■製パルフロ
ン０スパゲティチューブＮｏ、７０４０） ヲ各人へ通
した。かつスパゲティチューブ１３の中には、直径３ｍ
ｍのステンレス製芯棒１４を、熱収縮後の延伸ＰＴＦＥ
板１２の厚さより長くなるように入れ、熱収縮時にチュ
ーブが潰れないようにし、またチューブが、収縮後の延
伸ＰＴＦＥＩ／ｌ１１２に強く固着するようにした。Next, PTF with an outer diameter of 4 mm, an inner diameter of 3 ms, and a wall thickness of 0.5 am.
E)] Meat tube 13 (Palfron 0 spaghetti tube No. 7040 manufactured by Nihon Valcar Co., Ltd.) was passed through each person. And the spaghetti tube 13 has a diameter of 3 m.
m stainless steel core rod 14 is made of expanded PTFE after heat shrinking.
The tube was inserted so that it was longer than the thickness of the plate 12 so that the tube would not be crushed during heat shrinkage, and the tube would strongly adhere to the expanded PTFEI/l 112 after shrinkage.
この状態で延伸ＰＴＦＥ板ｌＯ及びチューブＢ、８棒１
４を３８０°Ｃのオーブン中に入れ２時間加熱収縮させ
、第４図（ｂ）の様に、収縮したＰＴＦＥ板１２がＰＴ
ＦＥ製チューブ１３と完全に密着しかつ、全（潰れたチ
ューブのない本発明品を得た。In this state, the expanded PTFE plate IO and tube B, 8 rods 1
4 is placed in an oven at 380°C and heat-shrinked for 2 hours, and as shown in Figure 4(b), the shrunken PTFE board 12 becomes PTFE.
A product of the present invention was obtained which was in complete contact with the FE tube 13 and had no crushed tube.
実施例２
厚さ４０ａのＰＴＦＥ素地を実施例１と同様にして約４
．２倍に２軸延伸した。こうして得たＰＴＦＥシートを
実施例１と同様に第４図の１０と同じ形、寸法に削り出
し、穴をあけた。Example 2 A PTFE substrate with a thickness of 40a was made in the same manner as in Example 1.
．． It was biaxially stretched to 2 times. The PTFE sheet thus obtained was cut into the same shape and dimensions as 10 in FIG. 4 in the same manner as in Example 1, and holes were punched therein.
次に外径２．５ｍ、内径１．５ｍ、肉厚０．５ｕのＰＴ
ＦＥ製薄肉チューブを実施例１と同様に各人へ入れかつ
、直径１．５ｍｍのステンレス製芯棒をチューブの中に
入れた。実施例２ではさらにＰＴＦＥチューブの外側に
ＰＦＡ製フィルム（厚さ０．２ｍａ＋）を第３図９の様
に巻いておいた。Next, PT with an outer diameter of 2.5 m, an inner diameter of 1.5 m, and a wall thickness of 0.5 u.
A thin-walled FE tube was placed in each person in the same manner as in Example 1, and a stainless steel core rod with a diameter of 1.5 mm was placed in the tube. In Example 2, a PFA film (thickness 0.2 ma+) was further wrapped around the outside of the PTFE tube as shown in FIG. 39.
この状態で実施例１と同様にして延伸ＰＴＦＥ板１０を
加熱収縮させた。収縮したＰＴＦＥ板１２板子２−ブ１
３とがその間に入ったＰＦＡを介して完全に融着しかつ
、全く潰れたチューブのない第４図の右図のような本発
明のチューブ束を得た。In this state, the expanded PTFE plate 10 was heat-shrinked in the same manner as in Example 1. Shrinked PTFE plate 12 plate 2-bu 1
A tube bundle of the present invention as shown in the right diagram of FIG. 4 was obtained in which the tubes were completely fused together through the PFA interposed therebetween and had no crushed tubes at all.
複数のチューブが、板状あるいはブロック状の超高分子
量ポリマーで固着されている本発明のチューブ束は、加
熱収縮することにより容易に得られ多数のチューブを固
着して一体化することができ、かつもれがなく、チュー
ブが潰れることもなく、熱交換器などに用いられるチュ
ーブ束として有効である。The tube bundle of the present invention, in which a plurality of tubes are fixed with a plate-shaped or block-shaped ultra-high molecular weight polymer, can be easily obtained by heat shrinking, and a large number of tubes can be fixed and integrated. There is no leakage and the tubes do not collapse, making it effective as a tube bundle used in heat exchangers, etc.
第１図から第４図は、本発明の説明図であり、延伸され
た超高分子量ポリマーからなる板状物に複数個の穴をあ
け、各人にチューブを通した状態で加熱収縮させる前の
図（ａ）及び加熱収縮後の収縮した超高分子量ポリマー
で固着されたチューブ束の図（ｂ）である。
特許出願人 旭化成工業株式会社
第１図
（ｂ）
ＣＩ又膳司
第２図
〔す又ｍ 才簀〕
３１！１
（ｂ）
〔リヌ運Ｍ ４＋’Ｊ
口又斎会電０
第４図
（ｂ）
Ｏヌ縮呼爽〕Figures 1 to 4 are explanatory diagrams of the present invention, in which a plurality of holes are made in a plate-like material made of a stretched ultra-high molecular weight polymer, and a tube is passed through each person before heating and shrinking. (a) and (b) of a tube bundle fixed with a shrunken ultra-high molecular weight polymer after heat shrinkage. Patent Applicant: Asahi Kasei Kogyo Co., Ltd. Figure 1 (b) CI Matazenji Figure 2 [Sumata m Saikan] 31!1 (b) [Rinun M 4+'J Kuchimatasai Kaiden 0 Figure 4 ( b) Onu condensation]
Claims (1)
で固着されたチューブ又はチューブ束 ２）延伸された超高分子量ポリマーからなる板状物ある
いはブロック状物に穴をあけ、穴にチューブを通した状
態で該板状物あるいはブロック状物を加熱収縮させてチ
ューブを固着することを特徴とするポリマーで固着され
たチューブ又はチューブ束の製造方法[Claims] 1) A tube or tube bundle fixed with a plate or block of ultra-high molecular weight polymer. 2) A hole is made in a plate or block of stretched ultra-high molecular weight polymer. A method for producing a tube or tube bundle fixed with a polymer, which comprises heat-shrinking the plate-like object or block-like object to fix the tube while passing the tube through the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3491289A JPH02214646A (en) | 1989-02-16 | 1989-02-16 | Tube fixed by polymer and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3491289A JPH02214646A (en) | 1989-02-16 | 1989-02-16 | Tube fixed by polymer and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02214646A true JPH02214646A (en) | 1990-08-27 |
Family
ID=12427421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3491289A Pending JPH02214646A (en) | 1989-02-16 | 1989-02-16 | Tube fixed by polymer and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02214646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014010210A1 (en) * | 2012-07-11 | 2014-01-16 | パナソニック株式会社 | Heat exchanger |
-
1989
- 1989-02-16 JP JP3491289A patent/JPH02214646A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014010210A1 (en) * | 2012-07-11 | 2014-01-16 | パナソニック株式会社 | Heat exchanger |
| JPWO2014010210A1 (en) * | 2012-07-11 | 2016-06-20 | パナソニックＩｐマネジメント株式会社 | Heat exchanger |
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