JP2790765B2 - Seal member - Google Patents
Seal memberInfo
- Publication number
- JP2790765B2 JP2790765B2 JP5172368A JP17236893A JP2790765B2 JP 2790765 B2 JP2790765 B2 JP 2790765B2 JP 5172368 A JP5172368 A JP 5172368A JP 17236893 A JP17236893 A JP 17236893A JP 2790765 B2 JP2790765 B2 JP 2790765B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- whisker
- asbestos
- calcium carbonate
- seal member
- 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 - Fee Related
Links
Landscapes
- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車や産業機械用の
パッキン及びガスケット等として用いられるシール部材
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal member used as a packing and a gasket for automobiles and industrial machines.
【０００２】[0002]
【従来の技術】従来、シール部材は一般に耐熱性を有す
るアスベスト繊維、ガラス繊維、セラミック繊維、金属
繊維等の基材たる無機繊維と、カオリン、クレー、タル
ク等の粘度鉱物からなる目詰材と、ゴム、セルロース等
の結合材とを抄造して得られる無機紙からなる。アスベ
スト繊維からなるフィラー材は、引張強度等の機械的特
性、柔軟性、復元性に優れていることから、シール性に
優れたシール部材を提供することができる。アスベスト
繊維製フィラー材よりも優れた他のフィラー材は未だ提
案されていない。2. Description of the Related Art Conventionally, a sealing member is generally made of a heat-resistant inorganic fiber as a base material such as asbestos fiber, glass fiber, ceramic fiber or metal fiber, and a plugging material made of a viscous mineral such as kaolin, clay or talc. , Rubber, cellulose and other binders. Since the filler material made of asbestos fiber is excellent in mechanical properties such as tensile strength, flexibility, and resilience, it is possible to provide a sealing member having excellent sealing properties. Other filler materials that are superior to asbestos fiber filler materials have not yet been proposed.
【０００３】ところで、アスベストは人体に吸入すると
肺癌やアスベスト病になるおそれがあることが指摘され
ており、アスベストの使用は衛生上好ましいものではな
い。このため、アスベストの使用は徐々に手控えられる
傾向にある。アスベスト代替品として、ガラス繊維、セ
ラミック繊維、金属繊維、アラミド繊維が検討されてい
るが、アスベストに代替できる繊維は見つかっていな
い。このような問題点を解消するために、例えば、特開
昭６１−２２５３９９号、特開昭６２−２９５９８３号
には、アスベスト繊維以外の無機繊維を用いたアスベス
トフリーのフィラー材が提案されている。これらの方法
は基材たる無機繊維を改良したものであるが、シール性
については充分とは言い難い。また、従来のシール部材
には目詰材として板状のカオリン、クレー、タルク等の
粘度鉱物が使用されている。しかし乍ら、これらの粒子
は板状形状をしているため粒子の分散が困難でシール性
に限界があり、また柔軟性、復元性において問題があ
る。[0003] Incidentally, it has been pointed out that asbestos may cause lung cancer and asbestos disease when inhaled into the human body, and the use of asbestos is not preferable in terms of hygiene. For this reason, the use of asbestos tends to be gradually reduced. Glass fiber, ceramic fiber, metal fiber, and aramid fiber are being considered as asbestos substitutes, but no fiber that can be substituted for asbestos has been found. In order to solve such a problem, for example, Japanese Patent Application Laid-Open Nos. 61-225399 and 62-295983 propose an asbestos-free filler material using inorganic fibers other than asbestos fibers. . Although these methods improve the inorganic fiber as the base material, their sealing properties are hardly sufficient. In addition, plate-like viscous minerals such as kaolin, clay, and talc are used as clogging materials in conventional seal members. However, since these particles have a plate-like shape, it is difficult to disperse the particles, and there is a limit in the sealing property, and there is a problem in flexibility and restorability.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、アスベスト
フリーのフィラー材を用いた場合においても、シール
性、柔軟性及び復元性において満足し得るシール部材を
提供するものである。SUMMARY OF THE INVENTION The present invention is to provide a sealing member which is satisfactory in sealing performance, flexibility and restorability even when an asbestos-free filler material is used.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、かかる実
情に鑑み、上記課題を解決するべく種々検討の結果、ウ
ィスカー状炭酸カルシウムを目詰材として使用すること
により、シール性に優れ且つ柔軟性、復元性の良好なシ
ール材を開発するに至ったものである。即ち、本発明は
無機繊維と、長径が５〜５０μｍ、短径が０．３〜３μ
ｍのウィスカー状炭酸カルシウムと、結合材とを抄造し
てなることを特徴とするシール部材を内容とする。Means for Solving the Problems In view of such circumstances, the present inventors have conducted various studies to solve the above-mentioned problems, and as a result, by using whisker-like calcium carbonate as a plugging material, it has excellent sealing properties and This has led to the development of a sealing material having good flexibility and resilience. That is, the present invention relates to an inorganic fiber having a major axis of 5 to 50 μm and a minor axis of 0.3 to 3 μm.
m, wherein the whisker-like calcium carbonate and the binder are formed into a sheet.
【０００６】このようなウィスカー状炭酸カルシウム
は、例えば特開平３−８８７１４号、同４−３２１５１
５号等に記載された方法で製造すればよく、水スラリー
または粉体としてシール部材に配合される。本発明に用
いられるウィスカー状炭酸カルシウムは、長径５〜５０
μｍ、短径０．３〜３μｍ程度のものが好ましい。また
ウィスカー状炭酸カルシウムは、カップリング剤等を表
面処理することも可能である。カップリング剤を処理し
たウィスカー状炭酸カルシウムは、バインダーとの接着
性が増大し、引張強度等の強度物性が向上する。基材と
しての無機繊維としては、ガラス繊維、セラミック繊
維、金属繊維、アスベスト繊維、アラミド繊維等が挙げ
られ、これらは単独又は２種以上組み合わせて用いられ
る。ウィスカー状炭酸カルシウムの配合量は、従来の目
詰材の配合量でよい。[0006] Such whisker-like calcium carbonate is disclosed, for example, in JP-A-3-88714 and JP-A-4-32151.
It may be manufactured by the method described in No. 5, etc., and is mixed with the sealing member as a water slurry or powder. The whisker-like calcium carbonate used in the present invention has a long diameter of 5 to 50.
μm and a minor diameter of about 0.3 to 3 μm are preferred. The whisker-like calcium carbonate can be subjected to a surface treatment with a coupling agent or the like. Whisker-like calcium carbonate treated with a coupling agent has increased adhesiveness to a binder and improved strength properties such as tensile strength. Examples of the inorganic fiber as the substrate include glass fiber, ceramic fiber, metal fiber, asbestos fiber, and aramid fiber, and these may be used alone or in combination of two or more. The compounding amount of the whisker-like calcium carbonate may be the compounding amount of the conventional plugging material.
【０００７】[0007]
【作用】ウィスカー状炭酸カルシウムは、この表面が微
細な起伏に富み表面積が大きいため、これを基材繊維に
配合すると、基材繊維と絡み合った状態となり、基材繊
維の隙間をウィスカー状炭酸カルシウムで埋めることが
できるので目詰効果（シール効果）が大きくなる。ま
た、ウィスカー状炭酸カルシウムはタルク等の板状形状
と異なり微細な隙間にも入りやすく、その結果、上記し
た如く目詰効果が向上するとともに、柔軟性、復元性の
面でも顕著な効果が認められる。The whisker-like calcium carbonate has a fine undulation and a large surface area, so when it is blended with the base fiber, the whisker-like calcium carbonate becomes entangled with the base fiber. The filling effect (sealing effect) increases. Also, unlike the plate-like shape of talc or the like, the whisker-like calcium carbonate easily enters fine gaps. As a result, as described above, the clogging effect is improved, and a remarkable effect is also observed in terms of flexibility and restorability. Can be
【０００８】[0008]
【実施例】以下、実施例に基づいて本発明を更に詳細に
説明するが、これらは本発明を限定するものではない。 実施例１、２ 比較例１ 表１に示す材料を同表に示す配合割合で抄造し、厚さ
０．４ｍｍ、嵩密度０．７g/cm3 の無機紙を得た。尚、
実施例１はウィスカー状炭酸カルシウム（長径：２５μ
ｍ、短径：０．７μｍ、）をそのままで添加したもの、
実施例２は、ウィスカー状炭酸カルシウムに予めカップ
リング剤を施したもの（α、β不飽和カルボン酸とα、
β不飽和カルボン酸ヒドロキシエステルの共重合体１重
量％とγ−アミノプロピルトリエトキシシラン０．８重
量％処理）である。比較例１は平均粒径１．５μｍのタ
ルクを添加したものである。The present invention will be described in more detail with reference to the following Examples, which, however, do not limit the present invention. Examples 1 and 2 Comparative Example 1 The materials shown in Table 1 were made at the mixing ratio shown in the table to obtain an inorganic paper having a thickness of 0.4 mm and a bulk density of 0.7 g / cm 3 . still,
In Example 1, whisker-like calcium carbonate (major axis: 25 μm)
m, minor axis: 0.7 μm)),
In Example 2, whisker-like calcium carbonate was subjected to a coupling agent in advance (α, β unsaturated carboxylic acid and α,
1% by weight of a copolymer of β-unsaturated carboxylic acid hydroxyester and 0.8% by weight of γ-aminopropyltriethoxysilane). In Comparative Example 1, talc having an average particle size of 1.5 μm was added.
【０００９】[0009]
【表１】 [Table 1]
【００１０】表１の配合で作った無機紙を幅１５ｍｍの
テープ状にし、引張試験、漏洩試験及び復元率の評価を
行った。評価結果を表２に示す。漏洩試験は、締付圧力
２００kgf/cm2 に加圧し、密封流体として０．５kg/cm2
のＮ2 ガスを使用して評価を行った。復元率について
は、漏洩試験を行った後の試料の厚みをノギスで測定
し、漏洩試験前の試料の厚みに対する百分率（％）で示
した。The inorganic paper prepared according to the composition shown in Table 1 was formed into a tape having a width of 15 mm, and a tensile test, a leak test and an evaluation of a restoration rate were performed. Table 2 shows the evaluation results. In the leak test, the tightening pressure was increased to 200 kgf / cm 2 , and 0.5 kg / cm 2
The evaluation was performed using N 2 gas of the above. Regarding the restoration rate, the thickness of the sample after the leak test was measured with a vernier caliper, and expressed as a percentage (%) with respect to the thickness of the sample before the leak test.
【００１１】[0011]
【表２】 [Table 2]
【００１２】[0012]
【発明の効果】叙上のとおり、ウィスカー状炭酸カルシ
ウムをガラス繊維等のフィラー材と組み合わせることに
より、従来のカオリン、クレー、タルク等の粘度鉱物に
比べて、目詰効果の良好なシール部材が得られ、衛生上
問題となっているアスベストを使用しなくても優れたシ
ール部材を提供することができる。As described above, by combining whisker-like calcium carbonate with a filler material such as glass fiber, a seal member having a better clogging effect than conventional viscous minerals such as kaolin, clay and talc can be obtained. Thus, an excellent sealing member can be provided without using asbestos which is a problem in hygiene.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C09K 3/10 F16J 15/10──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 6 , DB name) C09K 3/10 F16J 15/10
Claims (1)
が０．３〜３μｍのウィスカー状炭酸カルシウムと、結
合材とを抄造してなることを特徴とするシール部材。1. A sealing member made of inorganic fibers, whisker-like calcium carbonate having a major axis of 5 to 50 μm and a minor axis of 0.3 to 3 μm, and a binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5172368A JP2790765B2 (en) | 1993-06-17 | 1993-06-17 | Seal member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5172368A JP2790765B2 (en) | 1993-06-17 | 1993-06-17 | Seal member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH073246A JPH073246A (en) | 1995-01-06 |
| JP2790765B2 true JP2790765B2 (en) | 1998-08-27 |
Family
ID=15940614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5172368A Expired - Fee Related JP2790765B2 (en) | 1993-06-17 | 1993-06-17 | Seal member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2790765B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146346A (en) * | 2013-03-27 | 2013-06-12 | 中国科学院长春应用化学研究所 | Non-asbestos static seal material and preparation method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3948651B2 (en) | 2002-02-07 | 2007-07-25 | 日立粉末冶金株式会社 | Spindle motor |
| JP6567450B2 (en) * | 2016-03-24 | 2019-08-28 | 朝日化学工業株式会社 | Heat resistant seal material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01163221A (en) * | 1987-12-18 | 1989-06-27 | Yahashi Kogyo Kk | Molded body of thermoplastic synthetic resin composition |
| JP2882838B2 (en) * | 1990-02-23 | 1999-04-12 | 丸尾カルシウム株式会社 | Surface-treated needle-like or whisker-like aragonite calcium carbonate and polypropylene-based resin composition containing the calcium carbonate |
| JPH03279245A (en) * | 1990-03-28 | 1991-12-10 | Maruo Calcium Co Ltd | Resin composition blended with whiskery calcium carbonate and molded article comprising the same composition |
| JPH0826298B2 (en) * | 1990-08-31 | 1996-03-13 | トヨタ車体株式会社 | Hot melt molding sealer |
-
1993
- 1993-06-17 JP JP5172368A patent/JP2790765B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146346A (en) * | 2013-03-27 | 2013-06-12 | 中国科学院长春应用化学研究所 | Non-asbestos static seal material and preparation method thereof |
| CN103146346B (en) * | 2013-03-27 | 2015-09-16 | 中国科学院长春应用化学研究所 | Non-asbestos static sealing materials and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073246A (en) | 1995-01-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980512 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |