JPH01141980A - Hermetic sealant composition for maintenance opening - Google Patents
Hermetic sealant composition for maintenance openingInfo
- Publication number
- JPH01141980A JPH01141980A JP30087787A JP30087787A JPH01141980A JP H01141980 A JPH01141980 A JP H01141980A JP 30087787 A JP30087787 A JP 30087787A JP 30087787 A JP30087787 A JP 30087787A JP H01141980 A JPH01141980 A JP H01141980A
- Authority
- JP
- Japan
- Prior art keywords
- butyl rubber
- polybutene resin
- filler
- maintenance opening
- composition
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 25
- 238000012423 maintenance Methods 0.000 title description 11
- 239000000565 sealant Substances 0.000 title description 2
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 16
- 229920001083 polybutene Polymers 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 11
- 230000035515 penetration Effects 0.000 claims abstract description 7
- 239000003566 sealing material Substances 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 6
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 abstract description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 abstract description 4
- 229920003051 synthetic elastomer Polymers 0.000 abstract description 4
- 239000005061 synthetic rubber Substances 0.000 abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 3
- 239000006229 carbon black Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000004927 clay Substances 0.000 abstract description 2
- 229920001577 copolymer Polymers 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical group CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 abstract 1
- 241000872198 Serjania polyphylla Species 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 10
- 230000007423 decrease Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000010734 process oil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 241000178435 Eliokarmos dubius Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000010985 glycerol esters of wood rosin Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
Landscapes
- Sealing Material Composition (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はメンテナンス開口の密閉シール材組成物、更に
詳しくは、車体フロア−下部にある燃料タンクなどのメ
ンテナンス開口に取付ける閉止キャップの密閉シール、
およびメンテナンス後の再密閉シールを可能にするシー
ル材組成物に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an airtight sealing material composition for a maintenance opening, and more particularly, to an airtight sealing material for a closing cap to be attached to a maintenance opening such as a fuel tank in the lower part of a vehicle body floor.
and a sealing material composition that enables resealing after maintenance.
従来技術と発明の解決すべき問題点
乗用車などの車体フロア−下部には、燃料タンクなどの
部品が固定されているが、必要に応じて清掃やメンテナ
ンス作業を行うため、車体フロア一部にはメンテナンス
開口が設けられている。このメンテナンス開口は通常、
閉止キャップにより閉じられているが、メンテナンス後
の再密閉を可能とするために、閉止キャップは通常、ボ
ルト・ナツトで固定、あるいは接着剤を用いて固定して
いる。Problems to be Solved by the Prior Art and the Invention Parts such as fuel tanks are fixed to the lower part of the car body floor of passenger cars. A maintenance opening is provided. This maintenance opening is usually
It is closed by a closing cap, which is usually fixed with bolts and nuts or with adhesive to enable resealing after maintenance.
しかしながら、ボルト・ナツトによる場合、固定作業が
煩雑であるだけでなく、ボルト・ナツトの防錆処理も必
要であり、そのシール効果も十分とはいえない。一方、
接着剤を用いる場合では、経時的くり返し接着力に難点
がある。However, when bolts and nuts are used, not only is the fixing work complicated, but the bolts and nuts also require rust prevention treatment, and the sealing effect is not sufficient. on the other hand,
When using an adhesive, there is a problem in the adhesive strength over time.
そこで本発明者らは、上記閉止キャップの良好な密閉シ
ールと共に、必要に応じて閉止キャップを取除いてメン
テナンスを行うことができ、しがち再度密閉シール可能
なシール材を提供するため鋭意研究を進めたところ、ブ
チルゴム、ポリブテン樹脂および充填剤を必須成分とし
、これらの配合割合を特定化し、かつ組成物の適正硬度
、すなわち２０℃測定の針入度［ＪＩＳ Ｋ２２０７
（５０ｇ、５秒後）に準じる。以下同様］を規制するこ
とにより、所期目的のシール材組成物が得られることを
見出し、本発明を完成させるに至った。Therefore, the inventors of the present invention have conducted extensive research in order to provide a sealing material that not only provides a good hermetic seal of the closing cap, but also allows the closing cap to be removed for maintenance if necessary, and which can easily be re-sealed. As we proceeded, we determined that butyl rubber, polybutene resin, and filler were essential components, specified their blending ratio, and determined the appropriate hardness of the composition, that is, the penetration level measured at 20°C [JIS K2207
(50g, after 5 seconds). The inventors have discovered that the desired sealing material composition can be obtained by regulating the following conditions, and have completed the present invention.
発明の構成と効果
すなわち、本発明は、ブチルゴム、ポリブテン樹脂およ
び充填剤から成るソール材組成物であって、ブチルゴム
とポリブテン樹脂の重量比がＩ：１．５〜２、充填剤の
含有量が組成物全量中３０〜５０％（重量％、以下同様
）、および２０°Ｃの針入度が６０〜８０であることを
特徴とするシール材組成物を提供するものである。Structure and Effects of the Invention Namely, the present invention provides a sole material composition comprising butyl rubber, polybutene resin, and filler, wherein the weight ratio of butyl rubber to polybutene resin is I:1.5 to 2, and the content of filler is I:1.5 to 2. The present invention provides a sealing material composition characterized by having a penetration rate of 30 to 50% (weight %, hereinafter the same) based on the total amount of the composition and a penetration degree of 60 to 80 at 20°C.
本発明で用いるブチルゴムとは、イソブチレンとイソプ
レンを共重合した合成ゴムを指称し、たとえばエッソ化
学（妹）、日本合成ゴム（ＰＪＦ、）、日本ゼオン（株
）などから市販されている。特に、部分架橋したブチル
ゴムは、１００℃以上の高温条件下での粘着力や曳糸性
の調整に有利である。The butyl rubber used in the present invention refers to a synthetic rubber obtained by copolymerizing isobutylene and isoprene, and is commercially available from, for example, Esso Chemical (Iso), Japan Synthetic Rubber (PJF), Nippon Zeon Co., Ltd., etc. In particular, partially crosslinked butyl rubber is advantageous in adjusting adhesive strength and stringiness under high temperature conditions of 100° C. or higher.
本発明で用いるポリブテン樹脂とは、イソブチレンとｎ
−ブチレンの共重合体液状ポリマーを指称し、通常平均
分子量２５０〜１５００程度のものを使用する。かかる
ポリブテン樹脂は、上記ブチルゴムとの相溶性に優れ、
ブチルゴムの軟化剤として、あるいは粘着付与剤として
機能する。使用量は、ブチルゴムとポリブテン樹脂の重
量比が１：１．２〜２、好ましくは１：１．４〜１．６
となるように選定する。ポリブテン樹脂の比率が１゜２
未満であると、粘着力が低下する傾向にあり、また２を
越えると、高温時の凝集力が低下して強度的に望ましく
ない。The polybutene resin used in the present invention is isobutylene and n
- It refers to a liquid copolymer of butylene, and those having an average molecular weight of about 250 to 1,500 are usually used. Such polybutene resin has excellent compatibility with the above-mentioned butyl rubber,
Functions as a softener for butyl rubber or as a tackifier. The amount used is such that the weight ratio of butyl rubber and polybutene resin is 1:1.2 to 2, preferably 1:1.4 to 1.6.
Select so that The ratio of polybutene resin is 1°2
If it is less than 2, the adhesive strength tends to decrease, and if it exceeds 2, the cohesive force at high temperatures decreases, which is undesirable in terms of strength.
本発明で用いる充填剤としては、特に制限されるもので
はないが、耐久性と粘着力と凝集力との関係から、カー
ボンブラックを主体にし、必要に応じてケイ酸、炭酸カ
ルシウム、クレー等を併用することが好ましい。使用量
は、組成物全量中３０〜５０％、好ましくは４０〜４５
％の範囲で選定する。３０％未満であると、高温時の強
度が低下し、また５０％を越えると、粘着力が低下する
傾向にある。The filler used in the present invention is not particularly limited, but from the viewpoint of durability, adhesive force, and cohesive force, carbon black is used as the main filler, and silicic acid, calcium carbonate, clay, etc. are used as necessary. It is preferable to use them together. The amount used is 30 to 50%, preferably 40 to 45% of the total amount of the composition.
Select within the range of %. If it is less than 30%, the strength at high temperatures tends to decrease, and if it exceeds 50%, the adhesive strength tends to decrease.
本発明に係るシール材組成物は、上記所定割合のブチル
ゴム、ポリブテン樹脂および充填剤を必須成分とし、こ
れに必要に応じてプロセスオイルなどの軟化剤、テルペ
ン樹脂、アルキル化フェノール樹脂、エステルガムなど
の粘着付与剤、硫黄、亜鉛華、マグネシアなどの加硫剤
、酸化カルシウムなどの老化防止剤等を適看添加しても
よい。The sealing material composition according to the present invention contains butyl rubber, polybutene resin and filler in the above-mentioned predetermined proportions as essential components, and optionally a softener such as process oil, terpene resin, alkylated phenol resin, ester gum, etc. A tackifier, a vulcanizing agent such as sulfur, zinc white or magnesia, an anti-aging agent such as calcium oxide, etc. may be added as appropriate.
本発明組成物の調製は通常、先ず液状のポリブテン樹脂
にブチルゴムを膨潤溶解させた後、これを充填剤および
任意の添加剤と共に強力ニーダ−等の撹拌機へ投入して
行う。このようにして常温固形の本発明組成物が得られ
るが、その硬度指数として２０℃の針入度は６０〜８０
、好ましくは６５〜７５に設定されていることが重要で
ある。The composition of the present invention is usually prepared by first swelling and dissolving butyl rubber in a liquid polybutene resin, and then charging this together with fillers and optional additives into a stirrer such as a powerful kneader. In this way, a composition of the present invention that is solid at room temperature is obtained, and its hardness index at 20°C is 60 to 80.
, preferably set to 65 to 75.
針入度が８０を越えると、高温時に流動し易くなり、加
熱状態での塗布後に塗布形状の保持性が低下する。また
６０未満であると、抑圧による変形がしにくくなり、粘
着接着性が低下す之。When the penetration exceeds 80, the coating tends to flow at high temperatures, and the retention of the coated shape after coating in a heated state decreases. Moreover, if it is less than 60, it becomes difficult to deform due to compression, and the adhesive property decreases.
本発明組成物の使用手段としては、加熱状態で塗布する
ことか自動化も簡単であり、通常、加熱式フォロワープ
レートを取付けた圧送ポンプや、充填容器全体を加熱し
て吐出する圧送ポンプが採用される。ただし、長い時間
加熱溶融状態で放置すると、当該組成物の変質が起こる
危険性があるので、加熱式フォロワープレート取付圧送
ポンプが好ましい。The composition of the present invention can be applied by applying it in a heated state, which is easy to automate, and usually a pressure pump equipped with a heated follower plate or a pressure pump that heats the entire filling container and discharges it is used. Ru. However, if the composition is left in a heated and molten state for a long time, there is a risk that the composition will deteriorate in quality, so a pressure pump equipped with a heated follower plate is preferred.
以上の構成から成る本発明組成物によれば、以下の利点
が奏仕られる。The composition of the present invention having the above configuration provides the following advantages.
■、リシール、接着性が高い。■Highly resealable and adhesive.
２、くり返し接着性に優れる。2. Excellent repeated adhesion.
３、経時的接着性に浸れる。3. Adhesive properties can be improved over time.
４ 室温で固形、加熱すると流動するので塗布作業の自
動化がし易い。4. It is solid at room temperature and becomes fluid when heated, making it easy to automate the application process.
次に実施例および比較例を挙げて本発明をより具体的に
説明する。Next, the present invention will be explained in more detail with reference to Examples and Comparative Examples.
実施例１
家産 重量部ブチルゴム
（エッソ化学（株）製、ＡＩＤ＃ｌＯ）・・・・・・１
７
ポリブテン樹脂（８石樹脂化学（株）製、ポリブテンＬ
Ｖ ５０、平均分子量４７０） ・・・・・・２８
カーボンブラツク ・・・・・・３５炭
酸カルシウム ・・・・・・ ７プロ
セスオイル ・・・・・・ ３粘着付
与剤（エッソ化学（株）製、エスコレツツ１１０２）
・・・・・ｌＯ計１００
上記ポリブテン樹脂にブチルゴムを膨潤溶解した後、残
りの成分と共にニーグーに投入して、針入度（２０℃）
７５のシール材組成物を得る。Example 1 Domestic product Part by weight Butyl rubber (manufactured by Esso Chemical Co., Ltd., AID#lO)...1
7 Polybutene resin (manufactured by Yasseki Resin Kagaku Co., Ltd., Polybutene L
V50, average molecular weight 470) ・・・・・・28
Carbon black...35 Calcium carbonate...7 Process oil...3 Tackifier (manufactured by Esso Chemical Co., Ltd., Escolets 1102)
・・・・100 total 100 After swelling and dissolving the butyl rubber in the above polybutene resin, put it into a Nigu with the remaining ingredients and check the penetration (20℃)
A sealing material composition of No. 75 is obtained.
この組成物を１３０−１６０℃に加熱しながら吐出機に
よって密閉キャップの周囲に塗布し、該キャップをメン
テナンス開口モデルに接着した。This composition was applied around the sealing cap using a dispensing machine while being heated to 130-160°C, and the cap was adhered to the maintenance opening model.
比較例１
市販の自動車用熱硬化型合成ゴムを用いて実施例１と同
様に、密閉キャップをメンテナンス開口モデルに接着し
た。Comparative Example 1 A sealing cap was adhered to a maintenance opening model in the same manner as in Example 1 using a commercially available thermosetting synthetic rubber for automobiles.
比較例２
市販の自動車用熱硬化型発泡シール材を用いて実施例１
と同様に、密閉キャップをメンテナンス開口モデルに接
着した。Comparative Example 2 Example 1 using a commercially available thermosetting foam sealant for automobiles
Similarly, the sealing cap was glued to the maintenance opening model.
接着シール試験
前記実施例！および比較例１．２によって得られるモデ
ル品に対し、常温、５０℃または一３０℃、並びに熱冷
サイクル後の接着強度（ｋｇ）をｉｔ材料試験機（藤井
精機（株）製）で測定する。結果を表１に示す。Adhesive seal test above example! For the model product obtained in Comparative Example 1.2, the adhesive strength (kg) at room temperature, 50°C or -30°C, and after heat-cooling cycle is measured using an IT material testing machine (manufactured by Fujii Seiki Co., Ltd.). . The results are shown in Table 1.
さらに１０サイクル後の再接着強度（ｋｇ）の測定結果
を表２に示す。Furthermore, Table 2 shows the measurement results of the re-adhesion strength (kg) after 10 cycles.
表２
特許出願人 サンスター技研株式会社 外１名代理人
弁理士 青 山 葆 外１名Table 2 Patent applicant: Sunstar Giken Co., Ltd. and one other representative
Patent attorney Aoyama Ao and 1 other person
Claims (1)
シール材組成物であって、ブチルゴムとポリブテン樹脂
の重量比が１：１．２〜２、充填剤の含有量が組成物全
量中３０〜５０重量％、および２０℃の針入度が６０〜
８０であることを特徴とするシール材組成物。1. A sealing material composition consisting of butyl rubber, polybutene resin, and filler, in which the weight ratio of butyl rubber and polybutene resin is 1:1.2 to 2, and the filler content is 30 to 50% by weight based on the total amount of the composition. , and the penetration at 20℃ is 60~
80. A sealing material composition characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30087787A JPH01141980A (en) | 1987-11-27 | 1987-11-27 | Hermetic sealant composition for maintenance opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30087787A JPH01141980A (en) | 1987-11-27 | 1987-11-27 | Hermetic sealant composition for maintenance opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01141980A true JPH01141980A (en) | 1989-06-02 |
Family
ID=17890191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30087787A Pending JPH01141980A (en) | 1987-11-27 | 1987-11-27 | Hermetic sealant composition for maintenance opening |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01141980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11952517B2 (en) | 2019-03-29 | 2024-04-09 | Henkel Ag & Co. Kgaa | Back-off preventing resealable adhesives |
-
1987
- 1987-11-27 JP JP30087787A patent/JPH01141980A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11952517B2 (en) | 2019-03-29 | 2024-04-09 | Henkel Ag & Co. Kgaa | Back-off preventing resealable adhesives |
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