JPH04114980A - Resin-lined concrete pipe - Google Patents
Resin-lined concrete pipeInfo
- Publication number
- JPH04114980A JPH04114980A JP23271090A JP23271090A JPH04114980A JP H04114980 A JPH04114980 A JP H04114980A JP 23271090 A JP23271090 A JP 23271090A JP 23271090 A JP23271090 A JP 23271090A JP H04114980 A JPH04114980 A JP H04114980A
- Authority
- JP
- Japan
- Prior art keywords
- primer
- layer
- concrete pipe
- resin
- polyester resin
- 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.)
- Granted
Links
- 229920001225 polyester resin Polymers 0.000 claims abstract description 15
- 239000004645 polyester resin Substances 0.000 claims abstract description 15
- 229920002803 thermoplastic polyurethane Polymers 0.000 abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 206010040844 Skin exfoliation Diseases 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
Description
【発明の詳細な説明】
ａ、 産業上の利用分野
本発明は、コンクリート管の内面に樹脂層をライニング
した樹脂ライニングコンクリート管に関する。DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a resin-lined concrete pipe in which the inner surface of the concrete pipe is lined with a resin layer.
ｂ、 従来の技術
］ンクリート管の内面に樹脂層をライニングし、それに
よって水の流れを良くし、掃流性を高め、耐薬品性を向
上させることができる。従来、コンクリート管の内面に
不飽和ポリエステル樹脂（以下ポリエステル樹脂という
）をライニングすることは行われていた。b. Prior Art] The inner surface of a concrete pipe is lined with a resin layer to improve water flow, sweep properties, and chemical resistance. Conventionally, the inner surface of a concrete pipe has been lined with unsaturated polyester resin (hereinafter referred to as polyester resin).
Ｃ１発明が解決しようとする課題
しかし、ポリエステル樹脂は、コンクリートとの付着性
が悪く、硬化時の収縮が大きく、剥離、クシツクの発生
のおそれがあり、エポキシ樹脂、ウレタン樹脂などに比
べて低価格で、作業上の取り扱いも容易であるにもかか
わらず、単独ではライニング材料として使用できなかっ
た。C1 Problems to be Solved by the Invention However, polyester resin has poor adhesion to concrete, large shrinkage during curing, and there is a risk of peeling and clumping, and it is less expensive than epoxy resins, urethane resins, etc. Although it is easy to handle, it could not be used alone as a lining material.
これらの弱点を補うため、ガラス繊維と組合わせて繊維
補強プラスチック（ＦＩ？Ｐ） として用いてきたが
、ライニング材料としてはエポキシ樹脂、ウレタン樹脂
に遅れをとっていた。To compensate for these weaknesses, fiber-reinforced plastics (FI?P) have been used in combination with glass fibers, but they have lagged behind epoxy resins and urethane resins as lining materials.
ｄ、 課題を解決するための手段
本発明は、高い伸び率をもつポリエステル樹脂（以下、
改良ポリエステル樹脂という）を用いて、ライニング層
を形成し、硬化後の温度低下に伴う樹脂の収縮によるク
ランクを、樹脂のもつ延び能力によって解消したもので
ある。d. Means for Solving the Problems The present invention uses a polyester resin (hereinafter referred to as
The lining layer is formed using an improved polyester resin (referred to as an improved polyester resin), and the stretching ability of the resin eliminates the cranking caused by the shrinkage of the resin as the temperature drops after curing.
すなわち、本発明の要旨は、コンクリート管の内面にプ
ライマーを塗布し、該プライマー層の表面に伸び率１０
％〜３０％のポリエステル樹脂層を形成してなる樹脂ラ
イニング管にある。That is, the gist of the present invention is to apply a primer to the inner surface of a concrete pipe, and to apply an elongation rate of 10 to the surface of the primer layer.
% to 30% polyester resin layer.
プライマーとしては、低粘度（５０〜７０センチボイズ
）の分子量５００〜１０００のアクリルウレタン樹脂を
使用し、これをコンクリートへ含浸させ、プライマーと
コンクリートとの付着性を良好なものとした。塗布する
プライマーの厚さは、例えば０゜１〜０．３ｍｍである
。このプライマーは未硬化（プライマー塗布後からの硬
化時間は約８時間）のうちであればポリエステル樹脂と
の付着性が良好であり、プライマー塗布からボυエステ
ル樹脂塗布の作業が連続的に可能となった。As the primer, an acrylic urethane resin with a low viscosity (50 to 70 centivoids) and a molecular weight of 500 to 1000 was used, and this was impregnated into the concrete to improve the adhesion between the primer and the concrete. The thickness of the primer to be applied is, for example, 0.1 to 0.3 mm. This primer has good adhesion to polyester resin while it is uncured (curing time is approximately 8 hours after application of the primer), making it possible to work continuously from application of the primer to application of the polyester resin. became.
こうして成形されたライニング層は、ポリエステル樹脂
層とコンクリ−１〜との間に非常に薄い、例えば０．２
ｍｍのプライマー層を設けたことにより、コンクリート
との付着を良好なものとなった。The lining layer formed in this way is very thin, for example 0.2
By providing a primer layer of mm, the adhesion to concrete became good.
改良ポリエステル樹脂は、伸び率１０％〜３０％のもの
で、１０％以下、３０％以上ではポリエステル樹脂の引
張強度の低下が著しいので好ましくない。The improved polyester resin has an elongation rate of 10% to 30%, and if it is less than 10%, and if it is more than 30%, the tensile strength of the polyester resin will drop significantly, so it is not preferable.
例えば下表に示す特性のものを用いることができる。For example, those having the characteristics shown in the table below can be used.
なお、上記伸び率の測定は、ＪＩＳ Ｋ７１１３プラス
チックの引張試験方法に準じて行った。The elongation rate was measured in accordance with JIS K7113 plastic tensile test method.
本発明の樹脂ライニング管は、次のようにして製造され
る。The resin-lined pipe of the present invention is manufactured as follows.
例えば遠心力成形により製造されたコンクリート管を通
常の方法で養生し、脱型した後、管を回転機に乗せて回
転させながら、コンクリート管内面を超硬刃（ダイヤモ
ンド）のグラインダーで研磨する。これにより、管内面
の突起物（砂利等）やレイタンスを除去し、更にこれら
を圧縮空気によるエアーガンで取り除く。For example, a concrete pipe manufactured by centrifugal force forming is cured in the usual manner, and after being demolded, the pipe is placed on a rotary machine and rotated, while the inner surface of the concrete pipe is polished using a grinder with carbide blades (diamond). This removes protrusions (gravel, etc.) and laitance on the inner surface of the tube, and further removes these with an air gun using compressed air.
次いで管を回転させなから吹付機を管内に挿入し、プラ
イマーを吹付け、プライマーが未硬化のうちにポリエス
テル樹脂を吹付ける。Next, without rotating the tube, a spraying machine is inserted into the tube, a primer is sprayed, and while the primer is uncured, a polyester resin is sprayed.
ｅ、 実施例および比較例
下表に示すポリエステル樹脂とプライマーを用い、実施
例では、超硬刃（ダイヤモンド）グラインダーを用い、
比較例ではワイヤーブラシを用いて直径２５０ｍｍ、管
厚２８ｍｍのヒユーム管に下地処理をし、プライマー層
０ 、２ ｍｍ、樹脂ライニング層１．３ｍｍを形成し
た。e. Examples and Comparative Examples Using the polyester resin and primer shown in the table below, and using a carbide blade (diamond) grinder in the examples,
In a comparative example, a wire brush was used to perform surface treatment on a humid tube with a diameter of 250 mm and a tube thickness of 28 mm, and a primer layer of 0.2 mm and a resin lining layer of 1.3 mm were formed.
成形後の状態および接着強度は、下表のとおりであった
。The condition and adhesive strength after molding were as shown in the table below.
ｆ、 発明の効果
本発明によれば、ライニング層に剥離等の異常が生じる
ことのない樹脂ライニングコンクリート管を得ることが
できる。f. Effects of the Invention According to the present invention, it is possible to obtain a resin-lined concrete pipe in which abnormalities such as peeling do not occur in the lining layer.
図面は本発明の樹脂ライニング管の縦断面図である。
１・・・コンクリート管、 ２・・・プライマー層、
３・・・樹脂層。The drawing is a longitudinal sectional view of the resin-lined pipe of the present invention. 1... Concrete pipe, 2... Primer layer,
3...Resin layer.
Claims (1)
マー層の表面に伸び率１０％〜３０％のポリエステル樹
脂層を形成してなる樹脂ライニングコンクリート管。A resin-lined concrete pipe made by applying a primer to the inner surface of a concrete pipe and forming a polyester resin layer with an elongation rate of 10% to 30% on the surface of the primer layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2232710A JP3041023B2 (en) | 1990-09-03 | 1990-09-03 | Resin-lined concrete pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2232710A JP3041023B2 (en) | 1990-09-03 | 1990-09-03 | Resin-lined concrete pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04114980A true JPH04114980A (en) | 1992-04-15 |
| JP3041023B2 JP3041023B2 (en) | 2000-05-15 |
Family
ID=16943569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2232710A Expired - Fee Related JP3041023B2 (en) | 1990-09-03 | 1990-09-03 | Resin-lined concrete pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3041023B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100494291B1 (en) * | 2002-04-01 | 2005-06-13 | 중앙산업 (주) | A rejuvenate method for superannuated pipe |
| WO2019021560A1 (en) * | 2017-07-27 | 2019-01-31 | 昭和電工株式会社 | Method for coating surface of structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200496019Y1 (en) * | 2020-11-30 | 2022-10-13 | 동관 카이후아 일렉트로닉스 코., 엘티디. | Keyboard switch having pressure balancing effect |
-
1990
- 1990-09-03 JP JP2232710A patent/JP3041023B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100494291B1 (en) * | 2002-04-01 | 2005-06-13 | 중앙산업 (주) | A rejuvenate method for superannuated pipe |
| WO2019021560A1 (en) * | 2017-07-27 | 2019-01-31 | 昭和電工株式会社 | Method for coating surface of structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3041023B2 (en) | 2000-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |