JPH0660252B2 - Method for manufacturing polyethylene gasoline tank - Google Patents
Method for manufacturing polyethylene gasoline tankInfo
- Publication number
- JPH0660252B2 JPH0660252B2 JP61020223A JP2022386A JPH0660252B2 JP H0660252 B2 JPH0660252 B2 JP H0660252B2 JP 61020223 A JP61020223 A JP 61020223A JP 2022386 A JP2022386 A JP 2022386A JP H0660252 B2 JPH0660252 B2 JP H0660252B2
- Authority
- JP
- Japan
- Prior art keywords
- gasoline
- tank
- polyethylene
- treated
- coupling agent
- 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.)
- Expired - Lifetime
Links
Landscapes
- Treatments Of Macromolecular Shaped Articles (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Description
【発明の詳細な説明】 ≪産業上の利用分野≫ 本発明はガソリンの不透過性に優れたポリエチレン製ガ
ソリンタンクの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a method for producing a polyethylene gasoline tank having excellent impermeability to gasoline.
≪従来の技術≫ 従来、車輌用のガソリンタンクを経済性及び耐衝撃性に
優れたポリエチレンから形成することが提案されてい
る。<< Conventional Technology >> Conventionally, it has been proposed to form a gasoline tank for a vehicle from polyethylene, which is excellent in economy and impact resistance.
しかしながら、単層ポリエチレンからなるガソリンタン
クではガソリンの主成分とポリエチレン壁部の化学的な
親和性が良いため、ガソリンがタンク壁部を浸透してタ
ンク表面に滲出してしまう。However, in a gasoline tank made of single-layer polyethylene, the main component of gasoline and the polyethylene wall have a good chemical affinity, so that the gasoline penetrates the tank wall and exudes to the tank surface.
このため、特開昭５８−２２０７３８号公報に示すよう
に、ナイロン等のバリア材層の両面に接着剤層を介して
高密度ポリエチレン層を積層した三種五層からなるプラ
スチックタンクが提案されているが、ナイロンはポリエ
チレンに比較して極めて高価であるためタンク全体の大
幅なコストアップになってしまう。また、この公知のタ
ンクは三種五層の積層構造のため、製造工程が複雑化す
ると言った問題があった。For this reason, as disclosed in JP-A-58-220738, there has been proposed a plastic tank consisting of three kinds and five layers in which a high-density polyethylene layer is laminated on both sides of a barrier material layer such as nylon via an adhesive layer. However, nylon is much more expensive than polyethylene, which greatly increases the cost of the entire tank. Further, this known tank has a problem that the manufacturing process is complicated because it has a laminated structure of three kinds and five layers.
そこで単層ポリエチレンからなる基材をフッ素または亜
硫酸ガスで化学的に処理し、ガソリンと親和性の乏しい
基をポリエチレン内面に生成し、ガソリン透過を防止す
る方法が提案されている。Therefore, a method has been proposed in which a base material made of single-layer polyethylene is chemically treated with fluorine or sulfurous acid gas to form a group having a poor affinity for gasoline on the inner surface of polyethylene to prevent permeation of gasoline.
≪発明が解決しようとする問題点≫ しかしながら、従来の化学的処理方法では毒性を有する
フッ素ガスまたは亜硫酸ガスを用いているため、作業環
境を悪化させ作業能率が悪いものとなっていた。また、
このようなガスで処理したガソリンタンクは必ずしもガ
ソリンの不透過性で満足できるものではなかった。<< Problems to be Solved by the Invention >> However, since the conventional chemical treatment method uses toxic fluorine gas or sulfurous acid gas, the work environment is deteriorated and the work efficiency is deteriorated. Also,
Gasoline tanks treated with such gases were not always satisfactory with gasoline impermeability.
本発明は上記のような問題点に鑑みてなされたもので、
その目的はガソリンの不透過性に優れ、しかも有毒ガス
等を使用することがなく作業環境及び作業能率の向上が
図れるポリエチレン製ガソリンタンクの製造方法を提供
するにある。The present invention has been made in view of the above problems,
It is an object of the present invention to provide a method of manufacturing a polyethylene gasoline tank, which has excellent impermeability to gasoline and which can improve the working environment and working efficiency without using toxic gas or the like.
≪問題点を解決するための手段≫ 上記の目的を達成するため、本発明に係るポリエチレン
製ガソリンタンクの製造方法によると、先ずポリエチレ
ンでなるタンクの壁面をプラズマ処理してこの壁面を活
性化させる。次に、このプラズマ処理した壁面にシラン
カップリング剤を塗布して強固に付着させ、その後にこ
の壁面を設定温度で加熱処理してガソリンの不透過性に
優れた膜を形成するのである。<< Means for Solving the Problems >> In order to achieve the above object, according to the method for producing a polyethylene gasoline tank according to the present invention, first, the wall surface of the tank made of polyethylene is plasma-treated to activate the wall surface. . Next, a silane coupling agent is applied to the plasma-treated wall surface to firmly adhere it, and then the wall surface is heat-treated at a set temperature to form a film having excellent gasoline impermeability.
≪実施例≫ 以下に本発明の好適な実施例について、経済性及び耐衝
撃性に優れた高密度ポリエチレン製タンクを例にとって
説明する。<< Examples >> Preferred examples of the present invention will be described below by taking a tank made of high-density polyethylene excellent in economy and impact resistance as an example.
ポリエチレンは炭素と水素が強固に結合された分子構造
となっていて、このままでは他の物質が結合しにくい状
態となっている。そこで先ず、ポリエチレン製のタンク
の内面を酸素プラズマで処理して、以下のようにポリエ
チレンの面を活性化させる。Polyethylene has a molecular structure in which carbon and hydrogen are strongly bonded, and as it is, other substances are difficult to bond. Therefore, first, the inner surface of the polyethylene tank is treated with oxygen plasma to activate the polyethylene surface as follows.
以下には、上記のプラズマ処理の結果主に生成される。 The following is mainly generated as a result of the above plasma treatment.
について説明する。 Will be described.
次に、上記のようにプラズマ処理されたタンクの内面に
シランカップリング剤ＹＲＳｉＸ３を塗布する。ここ
で、Ｙは有機官能基で例えば −ＮＨ２，−ＮＨ２Ｃ２Ｈ４ＮＨ，−ＮＨ２ＣＯＮＨ，
−ＣＨ２＝ＣＨ，−ＣＨ２＝ＣＣＨ３ＣＯ 等がある。Ｒは炭化水素基で、例えば−ＣｎＨ3n−１等
がある。Ｓｉは珪素原子である。Ｘは珪素原子に結合す
る加水分解基で、例えば−Ｃｌ，−ＯＲ，−ＯＣＯＲ等
がある。上記の塗布は、例えば１０のアルコール中に
０．１〜０．５のシランカップリング剤を含有する溶液
中にタンクを浸漬することによって極めて簡単に行うこ
とができる。Next, the silane coupling agent YRSiX 3 is applied to the inner surface of the tank that has been plasma-treated as described above. Here, Y is for example -NH 2 organofunctional group, -NH 2 C 2 H 4 NH , -NH 2 CONH,
-CH 2 = CH, there is a -CH 2 = CCH 3 CO and the like. R is a hydrocarbon group, for example, a -C n H 3n -1 like. Si is a silicon atom. X is a hydrolyzable group bonded to a silicon atom, such as -Cl, -OR and -OCOR. The above-mentioned application can be carried out very easily by, for example, immersing the tank in a solution containing 0.1 to 0.5 of the silane coupling agent in 10 alcohols.
上記の塗布に際してシランカップリング剤ＹＲＳｉＸ３
が加水分解すると、以下のうになる。When applying the above, a silane coupling agent YRSiX 3
When is hydrolyzed, it becomes as follows.
ＹＲＳｉＸ３＋３Ｈ２Ｏ →ＹＲＳｉ（ＯＨ）３＋３ＨＸ そして、このカップリング剤がポリエチレン製タンクの
内面と反応すると以下のようになる。YRSiX 3 + 3H 2 O → YRSi (OH) 3 + 3HX Then, when this coupling agent reacts with the inner surface of the polyethylene tank, it becomes as follows.
このタンクを例えば１００℃で１５分間加熱処理する
と、以下のうな反応が生じる。 When this tank is heat-treated at 100 ° C. for 15 minutes, the following reaction occurs.
このようにしてポリエチレン表面に の基を生じる。 In this way on the polyethylene surface Yields the group
この中のＹの部分にガソリンと親和性の低い基をもたせ
ることによりガソリンの不透過性に優れた膜を形成し
て、ガソリン透過性をなくすのである。By imparting a group having a low affinity to gasoline in the portion of Y in this, a membrane having excellent impermeability to gasoline is formed and the gasoline permeability is lost.
上記加熱処理は、好ましくは６０℃〜１４０℃の温度で
２〜２０分間加熱雰囲気中に入れることである。The heat treatment is preferably carried out in a heating atmosphere at a temperature of 60 ° C. to 140 ° C. for 2 to 20 minutes.
本発明に用いられるシランカップリング剤としては多種
多用のものがあるが、特にナイロンと同じアミド結合や
イミド結合を持つカップリング剤がガソリン透過防止効
果が大きく好ましい。一例としてはアミノシランがあ
り、このアミノシランとしては以下のようなものが例示
される。There are various types of silane coupling agents used in the present invention, and in particular, a coupling agent having the same amide bond or imide bond as nylon has a large gasoline permeation-preventing effect and is preferable. One example is aminosilane, and the following are exemplified as this aminosilane.
Ｈ２ＮＣＨ３Ｈ６Ｓｉ（ＯＣ２Ｈ５）３ Ｈ２ＮＣＨ４ＮＨＣ３Ｈ６Ｓｉ（ＯＣＨ３）３ Ｈ２ＮＣ２Ｈ４ＮＨＣ３Ｈ６Ｓｉ（ＯＣＨ３）３ ＣＨ３ＣＯＯＣ２Ｈ４ＮＨＣ２Ｈ４ＮＨＣ３Ｈ６Ｓｉ
（ＯＣＨ３）３ Ｈ２ＮＣ２Ｈ４ＮＨＣ２Ｈ４ＮＨＣ３Ｈ６Ｓｉ（ＯＣ
Ｈ３）３ Ｈ２ＮＣＨ２ＣＨ２ＮＨＣＨ２ＣＨ２ＣＨ２si（ＯＣ
Ｈ３）３ 上記アミノシランのうち、で示したもので処理したボ
トルとフッ素処理したボトルと未処理のボトルのガソリ
ン透過量のデーターを図に示す。このデーターは内容量
５００mlのボトル中に２００mlのガソリンを入れて、そ
の減少量から透過量を測定したもので、このデーターか
ら、ガソリンの１日当たりの透過量は未処理のボトルが
４．６８×１０-1ｇ／日、フッ素処理したボトルが９．
３８×１０-2ｇ／日であるのに対し、本発明のプラズマ
シラン処理したボトルでは７．００×１０-3ｇ／日と顕
著に減少しているのが認められた。 H 2 NCH 3 H 6 Si ( OC 2 H 5) 3 H 2 NCH 4 NHC 3 H 6 Si (OCH 3) 3 H 2 NC 2 H 4 NHC 3 H 6 Si (OCH 3) 3 CH 3 COOC 2 H 4 NHC 2 H 4 NHC 3 H 6 Si
(OCH 3) 3 H 2 NC 2 H 4 NHC 2 H 4 NHC 3 H 6 Si (OC
H 3) 3 H 2 NCH 2 CH 2 NHCH 2 CH 2 CH 2 si (OC
H 3 ) 3 Among the above aminosilanes, the data of gasoline permeation amount of the bottle treated with, the fluorine-treated bottle and the untreated bottle are shown in the figure. This data was obtained by putting 200 ml of gasoline in a bottle with an internal capacity of 500 ml and measuring the permeation amount from the reduction amount. From this data, the permeation amount of gasoline per day was 4.68 for untreated bottles. 10 -1 g / day, 9 bottles fluorinated.
While it was 38 × 10 −2 g / day, it was observed that the plasma-silane-treated bottle of the present invention markedly decreased to 7.00 × 10 −3 g / day.
≪効 果≫ 以上のように本発明に係るポリエチレン製ガソリンタン
クの製造方法では、ガソリンの不透過性改善のために初
めてシランカップリング剤を用いただけでなく、ポリエ
チレン製のタンク壁面をプラズマ処理した後、この壁面
にシランカップリング剤を塗布し、次いで該壁面を設定
温度で加熱処理しているため、プラズマ処理によってタ
ンク壁面が活性化されてシランカップリング剤が強固に
付着されるのである。そして、シランカップリング剤と
してガソリンと親和性の低いものを用いることによって
ガソリン不透過性に優れた膜を形成し、従来例に比べる
と著しくガソリン透過防止効果を上げることが可能とな
ったのである。<< Effects >> As described above, in the method for producing a polyethylene gasoline tank according to the present invention, not only the silane coupling agent was used for the first time in order to improve the impermeability of gasoline, but the polyethylene tank wall was plasma-treated. After that, since the silane coupling agent is applied to this wall surface and then the wall surface is heat-treated at a set temperature, the tank wall surface is activated by the plasma treatment and the silane coupling agent is firmly attached. Then, by using a silane coupling agent having a low affinity with gasoline, a film excellent in gasoline impermeability was formed, and it was possible to significantly improve the effect of preventing gasoline permeation compared with the conventional example. .
また、本発明では従来のように有毒ガスを用いることが
ないので、作業環境が良く作業能率を上げることもでき
る。Further, in the present invention, since no toxic gas is used unlike the conventional case, the working environment is good and the working efficiency can be improved.
図は未処理のボトルと従来の方法で処理したボトルと本
発明の方法で処理したボトルのガソリン透過量を比較し
て示すグラフである。The figure is a graph showing a comparison of gasoline permeation amounts of an untreated bottle, a bottle treated by the conventional method and a bottle treated by the method of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ６５Ｄ 25/14 Ｚ 7403−3Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B65D 25/14 Z 7403-3E
Claims (1)
処理した後、該壁面にシランカップリング剤を塗布し、
次いで該壁面を設定温度で加熱処理してガソリン不透過
性に優れた膜を形成することを特徴とするポリエチレン
製ガソリンタンクの製造方法。1. A wall surface of a tank made of polyethylene is plasma-treated, and then a silane coupling agent is applied to the wall surface,
Then, the wall surface is heat-treated at a set temperature to form a membrane having excellent gasoline impermeability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61020223A JPH0660252B2 (en) | 1986-02-03 | 1986-02-03 | Method for manufacturing polyethylene gasoline tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61020223A JPH0660252B2 (en) | 1986-02-03 | 1986-02-03 | Method for manufacturing polyethylene gasoline tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62179536A JPS62179536A (en) | 1987-08-06 |
| JPH0660252B2 true JPH0660252B2 (en) | 1994-08-10 |
Family
ID=12021166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61020223A Expired - Lifetime JPH0660252B2 (en) | 1986-02-03 | 1986-02-03 | Method for manufacturing polyethylene gasoline tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0660252B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768385B2 (en) * | 1990-11-13 | 1995-07-26 | 株式会社レグルス | Resin molded product and method for producing the same |
| US5647939A (en) | 1994-12-05 | 1997-07-15 | Integrated Liner Technologies, Inc. | Method of bonding a cured elastomer to plastic and metal surfaces |
| DE59503609D1 (en) * | 1995-01-19 | 1998-10-22 | Inpro Innovations Gmbh | Process for the production of plasma-compatible surfaces of thermoplastic parts |
| DE19637912A1 (en) * | 1996-09-18 | 1998-03-19 | Basf Ag | Process for coating plastic moldings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS612738A (en) * | 1984-06-13 | 1986-01-08 | Sumitomo Electric Ind Ltd | Surface treatment of synthetic resin molded article |
-
1986
- 1986-02-03 JP JP61020223A patent/JPH0660252B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62179536A (en) | 1987-08-06 |
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