JPH04324095A - Resin tank for heat exchanger - Google Patents
Resin tank for heat exchangerInfo
- Publication number
- JPH04324095A JPH04324095A JP9432191A JP9432191A JPH04324095A JP H04324095 A JPH04324095 A JP H04324095A JP 9432191 A JP9432191 A JP 9432191A JP 9432191 A JP9432191 A JP 9432191A JP H04324095 A JPH04324095 A JP H04324095A
- Authority
- JP
- Japan
- Prior art keywords
- nylon
- resin tank
- resin
- heat exchanger
- silicon
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 47
- 229920005989 resin Polymers 0.000 title claims abstract description 47
- 239000004677 Nylon Substances 0.000 claims abstract description 29
- 229920001778 nylon Polymers 0.000 claims abstract description 29
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 16
- 239000010703 silicon Substances 0.000 claims abstract description 16
- 239000003365 glass fiber Substances 0.000 claims abstract description 14
- 239000005871 repellent Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 230000001846 repelling effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 5
- 229910001628 calcium chloride Inorganic materials 0.000 description 5
- 239000001110 calcium chloride Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229920002292 Nylon 6 Polymers 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229920005573 silicon-containing polymer Polymers 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、自動車用ラジエータ等
の熱交換器に用いられる樹脂タンクに関するものである
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin tank used in a heat exchanger such as an automobile radiator.
【０００２】0002
【従来の技術】従来、この種の樹脂タンクは、ガラス繊
維を充填した強化ナイロン（ナイロン６又はナイロン６
６）が用いられている。然し、このナイロンは、飽和吸
水率が５〜６％に達するため、吸水状態にある時、冬期
に道路に散布される氷結防止剤（塩化カルシウム）によ
り、樹脂タンクの表面にストレスクラッキングを生じ、
内圧等によるタンクの応力が大きい時には、内部の不凍
液が漏出する恐れがある。[Prior Art] Conventionally, this type of resin tank was made of reinforced nylon (nylon 6 or nylon 6) filled with glass fibers.
6) is used. However, this nylon has a saturated water absorption rate of 5 to 6%, so when it absorbs water, the anti-icing agent (calcium chloride) sprayed on roads in winter causes stress cracking on the surface of the resin tank.
When the stress in the tank is large due to internal pressure, etc., there is a risk that the antifreeze inside will leak.
【０００３】そこで、従来、斯かる不具合を防止するた
めに、例えば、以下に示す技術が知られている。樹脂タ
ンク表面に樹脂と親和性があり、且つ耐熱性，耐水性の
良い低揮発性の有機物質を付着若しくは浸透させたもの
（実公昭６０−５２７９号公報）。飽和吸水率を４％以
下の低吸水性ポリアミド樹脂或いはポリアミド樹脂を主
成分とする共重合若しくは混合物を用いるもの（特開昭
５９−１６８６５４号公報）。[0003] Conventionally, the following techniques, for example, have been known to prevent such problems. A resin tank in which a low-volatile organic substance that has affinity with the resin and has good heat resistance and water resistance is adhered to or permeated on the surface of the tank (Japanese Utility Model Publication No. 1983-5279). A low water absorbing polyamide resin having a saturated water absorption rate of 4% or less, or a copolymer or mixture containing a polyamide resin as a main component (Japanese Patent Laid-Open Publication No. 168654/1983).
【０００４】ナイロン３０〜７０％とポリプロピレン７
０〜３０％とから成るナイロン・ポリプロピレンアロイ
８０〜５５重量％に、ガラス繊維２０〜４５重量％を充
填した樹脂材で成形したもの（特開昭６２−１４７２９
９号公報）。ナイロン３０〜７０％と変成ポリプロピレ
ン７０〜３０％とから成るナイロン・変成ポリプロピレ
ンアロイ８０〜５５重量％に、ガラス繊維２０〜４５重
量％を充填した樹脂材で成形したもの（特開昭６３−２
９２９７号公報）。30-70% nylon and polypropylene 7
Molded from a resin material filled with 80-55% by weight of nylon/polypropylene alloy consisting of 0-30% glass fiber (Japanese Patent Laid-Open No. 62-14729)
Publication No. 9). Molded from a resin material filled with 80-55% by weight of a nylon/modified polypropylene alloy consisting of 30-70% of nylon and 70-30% of modified polypropylene filled with 20-45% by weight of glass fiber (JP-A-63-2
Publication No. 9297).
【０００５】[0005]
【発明が解決しようとする課題】然し、実公昭６０−５
２７９号公報に開示の樹脂タンクに於ては、既に成形さ
れた樹脂タンクに後工程で処理をするため、製造が煩雑
となり、又、表面処理であるから、剥離等の恐れがある
。又、特開昭５９−１６８６５４号公報，特開昭６２−
１４７２９９号公報及び特開昭６３−２９２９７号公報
に開示された樹脂タンクに於ては、成形材料によって改
善するものであるから、実公昭６０−５２７９号公報に
開示の樹脂タンクに於ける不具合は無いが、高価な材料
を必要とするため、樹脂タンク自体が高価なものとなり
、好ましいものではなかった。[Problem to be solved by the invention] However,
In the resin tank disclosed in Japanese Patent No. 279, manufacturing is complicated because the already molded resin tank is treated in a post-process, and since the tank is surface treated, there is a risk of peeling. Also, JP-A-59-168654, JP-A-62-
In the resin tanks disclosed in Japanese Utility Model Publication No. 147299 and Japanese Unexamined Patent Publication No. 63-29297, the problem can be solved by using a molding material, so the problems in the resin tank disclosed in Japanese Utility Model Publication No. 60-5279 can be solved. However, since it requires expensive materials, the resin tank itself becomes expensive, which is not desirable.
【０００６】本発明は斯かる従来の問題点を解決するた
めに為されたもので、その目的は、表面にシリコンを浸
出させることによって撥水層を形成し、ナイロンの吸水
率を抑制し、以て樹脂タンクの寿命を延ばすことを可能
とした熱交換器用樹脂タンクを提供することにある。The present invention has been made to solve these conventional problems, and its purpose is to form a water-repellent layer by leaching silicon onto the surface, suppress the water absorption rate of nylon, It is an object of the present invention to provide a resin tank for a heat exchanger, which makes it possible to extend the life of the resin tank.
【０００７】[0007]
【課題を解決するための手段】本発明に係る熱交換器用
樹脂タンクは、ナイロンとガラス繊維とを主材とする熱
交換器用樹脂タンクに於て、ナイロン中にシリコンオイ
ルを分散し、表面にシリコンによる撥水層を形成したも
のである。本発明に於て、ナイロンとしては、ナイロン
６又はナイロン６６が用いられる。ナイロンの配合量と
しては、３０〜８０％が望ましい。３０％未満では、剛
性が不足し、７０％を越えると、吸水し易くなる。[Means for Solving the Problems] A resin tank for a heat exchanger according to the present invention is a resin tank for a heat exchanger that is mainly made of nylon and glass fiber. A water-repellent layer made of silicon is formed. In the present invention, nylon 6 or nylon 66 is used as the nylon. The amount of nylon blended is preferably 30 to 80%. If it is less than 30%, the rigidity will be insufficient, and if it exceeds 70%, it will easily absorb water.
【０００８】又、シリコンとしては、例えば、粘度が数
万ｃ／ｓ（２５℃）のシリコンオイル、又はジメチルシ
リコンポリマーとナイロンとの非相溶ブレンドであるシ
リコーンコンセントレート（例えば、東レ・ダウコーニ
ング・シリコーン株式会社製の商品名ＢＹ２７）がある
。シリコンは、樹脂と非相溶性であり、樹脂に配合して
成形すると、樹脂中にシリコンが分散する。[0008] Examples of silicone include silicone oil with a viscosity of tens of thousands of c/s (25°C), or silicone concentrate (for example, Toray Dow Corning), which is an incompatible blend of dimethyl silicone polymer and nylon.・There is a product name BY27 manufactured by Silicone Co., Ltd. Silicon is incompatible with resin, and when it is blended with resin and molded, silicon is dispersed in the resin.
【０００９】シリコンオイルは、流れ性の向上により射
出成形時間が短縮し、サイクルタイムが改善されたり、
成形性向上による品質アップ等がある。然し、添加量の
少ない系以外では、逆にスクリューのスリップにより可
塑化時間が延び、結果としてサイクルタイムが悪化した
り、押出機による混練時、或いは射出成形時にシリンダ
ー内で樹脂の滞留を生じ、結果として熱劣化による樹脂
焼けが発生する恐れがある。そこで、添加量としては、
ナイロン１００重量部に対して、２〜５０重量部が望ま
しい。[0009] Silicone oil shortens injection molding time due to improved flowability, improves cycle time,
There are improvements in quality due to improved moldability. However, in systems other than those in which the amount added is small, screw slipping prolongs the plasticization time, resulting in a worsening of the cycle time, or the resin remains in the cylinder during kneading with an extruder or injection molding. As a result, resin burning due to thermal deterioration may occur. Therefore, the amount added is
The amount is preferably 2 to 50 parts by weight per 100 parts by weight of nylon.
【００１０】一方、シリコーンコンセントレートは、予
め樹脂と非架橋性のシリコーン材料が高度に混練されて
いるので、ペレット状であり、計量が容易で、ドライブ
レンド方式により任意量のシリコンが配合できる。又、
樹脂へ配合する際の分散性に優れている。しかも、高分
子量のジメチルシリコンポリマーを使用しているので、
成形品に対して極めて高い潤滑特性を付与することがで
きると共に、摩擦時、樹脂表面からシリコンの離脱が起
こり難く持続性に優れている。更に、樹脂の機械的特性
に与える悪影響は殆ど無い。[0010] On the other hand, silicone concentrate has a resin and a non-crosslinkable silicone material highly kneaded in advance, so it is in the form of pellets and easy to measure, and any amount of silicone can be blended using a dry blend method. or,
Excellent dispersibility when blended into resin. Moreover, since it uses high molecular weight dimethyl silicone polymer,
It is possible to impart extremely high lubrication properties to molded products, and it also has excellent durability because it is difficult for silicon to separate from the resin surface during friction. Furthermore, there is almost no adverse effect on the mechanical properties of the resin.
【００１１】そして、ナイロンに対するシリコンの配合
は、ナイロン１００重量部に対して２〜５０重量部が望
ましい。２重量部未満では、成形された樹脂タンクの表
面に浸出するシリコンの量が少なくなり、塩化カルシウ
ムを付着し難くする機能が低下する。逆に、５０重量部
以上では、成形性が困難となる。又、ナイロンとガラス
繊維との付着強度を低下させ、ガラス繊維による補強効
果を低下させる恐れがある。The ratio of silicon to nylon is preferably 2 to 50 parts by weight per 100 parts by weight of nylon. If it is less than 2 parts by weight, the amount of silicon leached onto the surface of the molded resin tank will be reduced, and the ability to prevent calcium chloride from adhering will be reduced. On the other hand, if the amount is 50 parts by weight or more, moldability becomes difficult. Furthermore, there is a risk that the adhesion strength between the nylon and the glass fibers will be reduced, and the reinforcing effect of the glass fibers will be reduced.
【００１２】更に、シリコンを添加すると、製品の外観
性を良くし、金型が低コストで済む。成形の離型性が良
く、アンダーカット処理ができる。低圧高速成形が可能
であり、金型強度，金型費が低減できる。又、ナイロン
とガラス繊維との配合としては、ナイロン３０〜８０％
とガラス繊維７０〜２０％が望ましい。ガラス繊維の配
合量が７０％が越えると、加工性が悪く、逆に２０％未
満であると、強度不足となる。Furthermore, the addition of silicon improves the appearance of the product and reduces the cost of the mold. It has good mold release properties and can be treated with undercuts. Low-pressure, high-speed molding is possible, reducing mold strength and mold cost. In addition, the combination of nylon and glass fiber is 30 to 80% nylon.
and 70 to 20% glass fiber is desirable. If the content of glass fiber exceeds 70%, processability will be poor, and if it is less than 20%, strength will be insufficient.
【００１３】[0013]
【作用】本発明に係る熱交換器用樹脂タンクに於ては、
ナイロンとガラス繊維によって形成された樹脂層から、
樹脂層中に分散しているシリコンが表面に向かって浸出
し、表面にシリコン層を形成する。このシリコン層が、
ナイロン中の水素結合部分を取り囲み、水素結合部分が
水と接することがないようにガードしてナイロンの吸水
性を低下させる。その結果、氷結防止剤（塩化カルシウ
ム）が付着しても、ストレスクラックを生じ難くする。[Function] In the resin tank for heat exchanger according to the present invention,
From a resin layer made of nylon and glass fiber,
Silicon dispersed in the resin layer leaches toward the surface, forming a silicon layer on the surface. This silicon layer
It surrounds the hydrogen bonds in nylon and protects them from coming into contact with water, reducing the water absorption of nylon. As a result, even if an anti-icing agent (calcium chloride) is attached, stress cracks are less likely to occur.
【００１４】[0014]
【実施例】以下、本発明を実施例により詳述する。
実施例
ナイロン６６７５重量％とガラス繊維２５重量％とシリ
コーンコンセントレートＢＹ２７−００５（東レ・ダウ
コーニング・シリコーン株式会社製）２．５重量％とを
充填した樹脂材を、常法に従って樹脂タンク成形用金型
を用いて射出成形した。[Examples] The present invention will be explained in detail below with reference to Examples. Example A resin material filled with 6675% by weight of nylon, 25% by weight of glass fiber, and 2.5% by weight of silicone concentrate BY27-005 (manufactured by Toray Dow Corning Silicone Co., Ltd.) was used for molding a resin tank according to a conventional method. Injection molding was performed using a mold.
【００１５】比較例
ナイロン６６７５重量％とガラス繊維２５重量％とを充
填した樹脂材を、常法に従って樹脂タンク成形用金型を
用いて射出成形した。上記実施例で成形された樹脂タン
クと、比較例で成形された樹脂タンクとについて、両タ
ンクのピースを２３℃のＬＬＣ５０％水溶液に２４時間
浸漬して吸水率を測定したところ、実施例のピースでは
０．８７〜０．８８％、比較例のピースでは０．９％〜
１．１％であった。Comparative Example A resin material filled with 6675% by weight of nylon and 25% by weight of glass fiber was injection molded using a mold for molding a resin tank according to a conventional method. Regarding the resin tank molded in the above example and the resin tank molded in the comparative example, pieces of both tanks were immersed in a 50% LLC aqueous solution at 23°C for 24 hours to measure the water absorption rate. 0.87 to 0.88%, and 0.9% to 0.9% for the comparative example piece.
It was 1.1%.
【００１６】以上の結果から明らかな如く、本実施例の
タンクは吸水量が比較例に比して著しく低下したことが
確認できた。又、氷結防止剤（塩化カルシウム）による
ストレスクラックは、ナイロンの吸水量が約１％以上に
なった時に生じるが、本発明では、上記実施例に示すよ
うに吸水量が極めて低いため、ミクロクレーズの発生す
る時間を、通常の樹脂タンクに比して４〜６倍程度と大
幅に伸ばすことができた。As is clear from the above results, it was confirmed that the water absorption amount of the tank of this example was significantly lower than that of the comparative example. In addition, stress cracks caused by anti-icing agents (calcium chloride) occur when the water absorption of nylon reaches approximately 1% or more, but in the present invention, as shown in the above example, the water absorption is extremely low, so microcrazes The time it takes for this to occur can be significantly extended by about 4 to 6 times compared to a regular resin tank.
【００１７】[0017]
【発明の効果】以上の如く、本発明によれば、樹脂タン
クの表面をシリコンが覆って撥水層を形成し、水滴等の
付着物を弾くことができる。そのため、ナイロンの吸水
率を抑制し、樹脂タンクが使用中に氷結防止剤（塩化カ
ルシウム）と接触しても、ストレスクラックを生じ難く
なる。又、シリコンの添加量によって樹脂タンクの寿命
のコントロールができる。更に、ナイロンに相溶性の良
いアロイを添加するものに比して安価に製造できる。As described above, according to the present invention, silicon covers the surface of the resin tank to form a water-repellent layer, thereby repelling deposits such as water droplets. Therefore, the water absorption rate of nylon is suppressed, and stress cracks are less likely to occur even if the resin tank comes into contact with an anti-icing agent (calcium chloride) during use. Furthermore, the life of the resin tank can be controlled by the amount of silicon added. Furthermore, it can be manufactured at a lower cost than when a highly compatible alloy is added to nylon.
Claims (1)
熱交換器用樹脂タンクに於て、ナイロン中にシリコンを
分散し、表面にシリコンによる撥水層を形成したことを
特徴とする熱交換器用樹脂タンク。[Claim 1] A resin tank for a heat exchanger mainly made of nylon and glass fiber, characterized in that silicon is dispersed in the nylon and a water-repellent layer of silicon is formed on the surface. resin tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9432191A JP2874066B2 (en) | 1991-04-24 | 1991-04-24 | Resin tank for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9432191A JP2874066B2 (en) | 1991-04-24 | 1991-04-24 | Resin tank for heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04324095A true JPH04324095A (en) | 1992-11-13 |
| JP2874066B2 JP2874066B2 (en) | 1999-03-24 |
Family
ID=14107021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9432191A Expired - Fee Related JP2874066B2 (en) | 1991-04-24 | 1991-04-24 | Resin tank for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2874066B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080632C (en) * | 1994-10-11 | 2002-03-13 | 日野汽车工业株式会社 | Radiator water box made of fibre reinforced resin and production of same |
-
1991
- 1991-04-24 JP JP9432191A patent/JP2874066B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080632C (en) * | 1994-10-11 | 2002-03-13 | 日野汽车工业株式会社 | Radiator water box made of fibre reinforced resin and production of same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2874066B2 (en) | 1999-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1183740A (en) | Method of coating automotive parts with silicone compositions | |
| EP0856536A3 (en) | Liquid crystal polyester resin composition | |
| JPH09143451A (en) | Method of making permeable gasket material resistant to oil absorption and bleeding and gasket for engine | |
| JP3157074B2 (en) | Polyamide resin composition and vibration damping material comprising the same | |
| CN107082949A (en) | A kind of high-performance polypropylene plastic barrel and preparation method thereof | |
| EP0348040B1 (en) | Insert injection molding method and molded article | |
| JPH04324095A (en) | Resin tank for heat exchanger | |
| JP2007063462A (en) | Self-lubricating organic silicone rubber material and method for producing the same | |
| KR930000613A (en) | Low Shrinkage Fluorosilicone Heat Curing Rubber Composition | |
| US8436107B2 (en) | Two-component high gloss semi-permanent water based release agent for polyester substrates | |
| JP2007063518A (en) | Self-lubricating organic silicone rubber material, method for producing the same and article made of self-lubricating organic silicone rubber material | |
| CN206870828U (en) | A kind of automobile lucite | |
| KR101789505B1 (en) | Polyketone resin composition for radiator end tank and a method for manufacturing the same | |
| WO2001068771A1 (en) | Hydrolysis-resistant polyamide molding materials for use in gas injection techniques (git) | |
| JP3285481B2 (en) | Automotive components made of polyacetal resin | |
| JP2534004B2 (en) | Composition for imparting anti-frost property | |
| JP2899208B2 (en) | Peroxide-cured silicone rubber composition for sealing | |
| JPH0662851B2 (en) | Hardened silicone powder containing silicone oil | |
| JPH08176313A (en) | Sheet molding compound and smc molded product | |
| JPS56135534A (en) | Conductive rubber composition | |
| JPS59184260A (en) | Room temperature curable polysiloxane composition | |
| KR100501764B1 (en) | Wiper blade | |
| KR102098509B1 (en) | Polyamide resin composition for vehicle roof rack and molded article made from same | |
| KR102231991B1 (en) | Polypropylene resin composition for Tail gate inner panel, and molded articles thereof | |
| JPS605279Y2 (en) | Resin tank for heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |