JPH10202673A - Injection method for two component type foamed urethane composition - Google Patents
Injection method for two component type foamed urethane compositionInfo
- Publication number
- JPH10202673A JPH10202673A JP9010021A JP1002197A JPH10202673A JP H10202673 A JPH10202673 A JP H10202673A JP 9010021 A JP9010021 A JP 9010021A JP 1002197 A JP1002197 A JP 1002197A JP H10202673 A JPH10202673 A JP H10202673A
- Authority
- JP
- Japan
- Prior art keywords
- urethane composition
- filled
- injection hole
- injection
- injected
- 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
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は二液型発泡性ウレタ
ン組成物の注入方法、更に詳しくは、常温下で発泡硬化
してウレタンフォームを形成しうる二液型発泡性ウレタ
ン組成物の注入に際し、注入物が逆流により注入口から
外へ漏れ出るのを防止する注入法に関する。The present invention relates to a method for injecting a two-part foamable urethane composition, and more particularly to a method for injecting a two-part foamable urethane composition capable of foaming and curing at room temperature to form a urethane foam. And an injection method for preventing an injectate from leaking out of an injection port due to backflow.
【0002】[0002]
【従来の技術と発明が解決しようとする課題】二液型発
泡性ウレタン組成物は、いわゆるポリオール主剤とポリ
イソシアネート硬化剤の二液型(主剤側に発泡剤を配合)
から成り、常温下で二液混合し、注入することにより、
直ちに発泡硬化してウレタンフォームを形成できるよう
になっている。ところで、近年、自動車業界では、車の
安全強化のため車体全体の剛性を確保することおよび居
住空間の防音性向上が叫ばれている。その中で、衝撃な
ど多くの負荷が加わる部分、たとえばシートベルト装置
のベルトアンカーが装着され、閉断面構造を有するセン
ターピラーや、その他前部車体の閉断面構造を有するフ
ロントピラーへの剛性強度と防音性の付与が望まれ、た
とえば、上述の二液型発泡性ウレタン組成物を用い、こ
れら車体ピラーの閉断面部分に発泡硬化するウレタンフ
ォームを充填する技術が開発検討されている。2. Description of the Related Art A two-pack type foamable urethane composition is a two-pack type of a so-called polyol main agent and a polyisocyanate curing agent (comprising a foaming agent on the main agent side).
By mixing and injecting two liquids at room temperature,
Immediately foamed and cured to form urethane foam. By the way, in recent years, in the automobile industry, it has been demanded to secure the rigidity of the entire vehicle body and to improve the soundproofness of a living space in order to enhance vehicle safety. Among them, the parts to which many loads such as impacts are applied, for example, the belt anchor of the seat belt device is attached, and the center pillar having a closed cross-sectional structure and the rigidity of the front pillar having the closed cross-sectional structure of the front vehicle body are improved. It is desired to provide soundproofing. For example, a technique of using the above-described two-part foamable urethane composition and filling a foamed and hardened urethane foam in the closed cross section of these vehicle body pillars has been studied.
【0003】しかしながら、この技術では、二液混合物
を流動状態で注入するため、注入物が発泡硬化に伴ない
逆流により注入口から外へ漏れ出たりすることが少なく
なく、これらの事態は自動車の外観に支障を来たすこと
になる。However, in this technique, since the two-part mixture is injected in a fluidized state, the injected substance often leaks out of the injection port due to backflow accompanying foam hardening. The appearance will be hindered.
【0004】[0004]
【課題を解決するための手段】そこで、本発明者らは、
かかる車体ピラーの閉断面部分に限らず、広く被充填構
造体の注入口へ上述の二液型発泡性ウレタン組成物を注
入する場合の逆流漏出の問題を解決するため鋭意研究を
進めたところ、注入口もしくはその近辺に特定の工夫を
施こすことにより、所期目的が達成しうることを見出
し、本発明を完成させるに至った。Means for Solving the Problems Accordingly, the present inventors have:
Not only in the closed cross-section portion of such a vehicle body pillar, after extensive research was conducted to solve the problem of backflow leakage when the two-part foamable urethane composition is injected into the inlet of the structure to be filled widely, The inventor has found that the intended purpose can be achieved by applying a specific device to the inlet or its vicinity, and has completed the present invention.
【0005】すなわち、本発明は、被充填構造体の注入
口へ二液型発泡性ウレタン組成物を注入し、発泡硬化に
よってウレタンフォームを充填する方法において、上記
注入に際し、注入物が逆流により注入口から外へ漏れ出
るのを防止するため、 i)被充填構造体の内面側に注入口用の遮蔽板を開閉自在
に取付けるか; ii)注入口に、開閉自在に注入しうるカット部を有する
ゴム成形体をはめ込むか;あるいは iii)注入口に、片方向のみの流体しか通さないチェック
弁を取付けることにより、二液型発泡性ウレタン組成物
を注入することを特徴とする二液型発泡性ウレタン組成
物の注入方法を提供するものである。That is, the present invention relates to a method for injecting a two-part foamable urethane composition into an inlet of a structure to be filled and filling the urethane foam by foaming and curing. In order to prevent leakage from the inlet to the outside, i) whether a shield plate for the inlet is attached to the inner surface side of the structure to be filled so as to be openable and closable; Or iii) injecting the two-part foamable urethane composition by installing a check valve in the inlet, which allows only one-way fluid flow, to form a two-part foam. It is intended to provide a method for injecting a water-soluble urethane composition.
【0006】本発明において対象とする二液型発泡性ウ
レタン組成物とは、常温下で発泡硬化しうるものであれ
ば特にその種類に制限はなく、任意のものが使用でき
る。具体的には、ポリオール主剤[多価アルコール,ビ
スフェノール類,各種アミンなどの活性水素含有化合物
に、アルキレンオキシドを付加反応させて得られるポリ
エーテルポリオールが好ましい]と、ポリイソシアネー
ト硬化剤[芳香族ポリイソシアネート、脂肪族または脂
環式ポリイソシアネート、芳香脂肪族ポリイソシアネー
ト、これらの各種変性物、ポリオール類と過剰のポリイ
ソシアネート化合物との反応で得られる末端NCO基含
有ウレタンプレポリマーなど]の二液型から成り、かつ
該主剤側に発泡剤[水、熱分解型化学発泡剤(アゾジカル
ボジアミド、p,p'−オキシビスベンゼンスルホニルヒド
ラジドなど)、熱分解型無機発泡剤(炭酸水素ナトリウム
など)、熱膨張型マイクロバルーン(ポリマーカプセルに
ペンタン、ヘプタンなどの低沸点溶剤を包み込んだも
の)等]を配合し、さらに必要に応じて反応触媒、整泡
剤、着色剤、可塑剤、充填剤、難燃剤、老化防止剤、抗
酸化剤などを加えた系で構成されるものが例示される。
特に発泡硬化物が硬質となるように配合することが好ま
しい。The type of the two-part foamable urethane composition to be used in the present invention is not particularly limited as long as it can be foamed and cured at room temperature, and any type can be used. Specifically, a polyol main agent [preferably a polyether polyol obtained by adding an alkylene oxide to an active hydrogen-containing compound such as polyhydric alcohol, bisphenols, and various amines] and a polyisocyanate curing agent [aromatic poly- Isocyanate, aliphatic or cycloaliphatic polyisocyanate, araliphatic polyisocyanate, various modified products thereof, urethane prepolymer containing terminal NCO group obtained by reaction of polyols with excess polyisocyanate compound, etc.] And a blowing agent (water, a pyrolytic chemical blowing agent (azodicarbodiamide, p, p'-oxybisbenzenesulfonylhydrazide, etc.), a pyrolytic inorganic blowing agent (sodium hydrogen carbonate, etc.) , Heat-expandable micro-balloons (low boiling such as pentane, heptane, etc. Solvent-encapsulated)), and if necessary, a reaction catalyst, foam stabilizer, colorant, plasticizer, filler, flame retardant, antioxidant, antioxidant, etc. Are exemplified.
In particular, it is preferable to blend the foamed cured product so as to be hard.
【0007】[0007]
【発明の実施の形態】以下、図面に基づき本発明に係る
二液型発泡性ウレタン組成物(以下、発泡材料と称す)の
注入方法について詳述する。かかる本発明注入方法は、
注入に際し、注入物の逆流漏出を防止することを目的と
するもので、該目的達成のため、図1〜3に示されるよ
うな工夫を施こすことを特徴とする。 i)図1において、被充填構造体1の内面側に注入口2用
の遮蔽板3を矢印方向へ開閉自在に、たとえば丁番付け
4によって取付ける。この場合、注入口2へミキシング
ヘッドの先端吐出口(図示せず)を挿入乃至接触させなが
ら、発泡材料を噴射すれば、遮蔽板3は矢印上方へ持上
げられるが、注入が終了し、噴射を停止するか、あるい
はミキシングヘッドの先端吐出口を取り出すと、遮蔽板
3が閉鎖して、発泡硬化物の逆流が防止される。 ii)また図2の場合では、その(A)(平面図)および(B)
(正面図)で示される開閉自在に注入しうるカット部(た
とえば×印のクロスカット)5を有するゴム成形体6を
注入口2へはめ込む。すなわち、かかるゴム成形体6の
カット部5へミキシングヘッドの先端吐出口を挿入乃至
接触させて発泡材料を噴射すれば、ゴム成形体の弾性力
によってカット部が密閉状態に保持されていることか
ら、外への発泡硬化物の漏出は防止される。 iii)さらに他の工夫として、図3に示される、片方向の
みの流体しか通さないチェック弁7を注入口2に取付け
る。この場合、ミキシングヘッドからの発泡材料は弁8
に対して矢印方向に噴射して注入されるが、噴射をスト
ップすると、弁8は元の閉鎖位置にもどるため、逆流が
完全に防止される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for injecting a two-part foamable urethane composition (hereinafter referred to as a foamed material) according to the present invention will be described in detail with reference to the drawings. Such an injection method of the present invention comprises:
The purpose of the injection is to prevent backflow leakage of the injected substance, and to achieve the object, the invention is characterized by devising as shown in FIGS. i) In FIG. 1, a shielding plate 3 for an inlet 2 is attached to the inner surface side of the structure 1 to be filled so as to be openable and closable in the direction of the arrow, for example, by a hinge 4. In this case, if the foaming material is sprayed while inserting or contacting the tip discharge port (not shown) of the mixing head to the injection port 2, the shielding plate 3 is lifted above the arrow, but the injection is completed and the injection is stopped. When stopped or when the discharge port at the tip of the mixing head is taken out, the shielding plate 3 is closed to prevent backflow of the foamed cured product. ii) In the case of FIG. 2, (A) (plan view) and (B)
A rubber molded body 6 having a cut portion (for example, a cross cut with an X mark) 5 that can be opened and closed freely (see a front view) is fitted into the injection port 2. That is, if the foaming material is injected by inserting or contacting the tip discharge port of the mixing head to the cut portion 5 of the rubber molded body 6, the cut portion is held in a sealed state by the elastic force of the rubber molded body. The leakage of the foamed cured product to the outside is prevented. iii) As a further improvement, a check valve 7 shown in FIG. In this case, the foam material from the mixing head is
When the injection is stopped, the valve 8 returns to the original closed position, and the backflow is completely prevented.
【0008】[0008]
【実施例】次に実施例を挙げて本発明をより具体的に説
明する。 実施例1 図4に示す、50×50×300mm寸法の試験箱11を
用意し、その正面壁に直径20mmの注入口12を設け、
かつ箱内に50×46mmの仕切板13と50×46mmの
仕切板14を図示の位置に設けておく。なお、発泡材料
として主剤[ポリエーテルポリオール(三洋化成工業(株)
製「サンニックスTP−700」)50部(重量部、以下同
様)、水0.1部および反応触媒1部]と硬化剤(粗製MD
I)50部から成る二液型発泡性ウレタン組成物を使用
する。次に上記注入口12に、×印のクロスカットを設
けたゴム成形体(外径20mm、内径15mm)をはめ込
み、これにミキシングヘッド(東邦機械工業(株)製、S
P−205、口径8mmφ)の先端吐出口を介して、上記
発泡材料200gを注入したところ、わずか0.5gの漏
出量が認められたにすぎない。これに対し、上記ゴム成
形体を用いずに、同様に注入したところ、26gの漏出
量があった。Next, the present invention will be described more specifically with reference to examples. Example 1 A test box 11 having a size of 50 × 50 × 300 mm shown in FIG. 4 was prepared, and an inlet 12 having a diameter of 20 mm was provided on the front wall thereof.
Further, a partition plate 13 of 50 × 46 mm and a partition plate 14 of 50 × 46 mm are provided in the positions shown in the drawing. In addition, as a foaming material, the main agent [polyether polyol (Sanyo Chemical Industries, Ltd.)
50 parts (parts by weight, hereinafter the same), 0.1 part of water and 1 part of a reaction catalyst] and a curing agent (crude MD)
I) A two-part foamable urethane composition consisting of 50 parts is used. Next, a rubber molded body (outside diameter: 20 mm, inside diameter: 15 mm) provided with a cross cut with an X mark was fitted into the injection port 12, and a mixing head (manufactured by Toho Machine Industry Co., Ltd., S
When 200 g of the foamed material was injected through the tip discharge port having a diameter of P-205 (diameter: 8 mmφ), only 0.5 g of leakage was observed. On the other hand, when the same injection was carried out without using the rubber molded body, there was a leakage of 26 g.
【図1】 被充填構造体の内面側に注入口用の遮蔽板を
取付けた状態を示す概要図である。FIG. 1 is a schematic diagram showing a state where a shielding plate for an inlet is attached to an inner surface side of a structure to be filled.
【図2】 開閉自在に注入しうるカット部を有するゴム
成形体の一例を示し、(A)は平面図および(B)は正面図
である。FIG. 2 shows an example of a rubber molded body having a cut portion that can be opened and closed freely, (A) is a plan view, and (B) is a front view.
【図3】 チェック弁の一例を示す概要図である。FIG. 3 is a schematic diagram illustrating an example of a check valve.
【図4】 実施例で用いる試験箱(被充填構造体)を示す
斜視図である。FIG. 4 is a perspective view showing a test box (filled structure) used in the example.
1:被充填構造体 2:注入口 3:遮蔽板 5:開閉自在に注入しうるカット部(クロスカット) 6:ゴム成形体 7:チェック弁 1: Structure to be filled 2: Injection port 3: Shield plate 5: Cut part (cross cut) that can be opened and closed freely 6: Rubber molded body 7: Check valve
Claims (1)
レタン組成物を注入し、発泡硬化によってウレタンフォ
ームを充填する方法において、上記注入に際し、注入物
が逆流により注入口から外へ漏れ出るのを防止するた
め、 i)被充填構造体の内面側に注入口用の遮蔽板を開閉自在
に取付けるか; ii)注入口に、開閉自在に注入しうるカット部を有する
ゴム成形体をはめ込むか;あるいは iii)注入口に、片方向のみの流体しか通さないチェック
弁を取付けることにより、二液型発泡性ウレタン組成物
を注入することを特徴とする二液型発泡性ウレタン組成
物の注入方法。1. A method for injecting a two-part foamable urethane composition into an inlet of a structure to be filled and filling the urethane foam by foaming and curing, wherein the injected material flows out of the inlet through backflow during the injection. In order to prevent leakage, i) whether a shield plate for an inlet is openably and closably mounted on the inner surface side of the structure to be filled; ii) a rubber molded body having a cut portion which can be opened and closed at the inlet. Or iii) by injecting the two-part foamable urethane composition into the inlet by installing a check valve that allows only one-way fluid flow, characterized in that the two-part foamable urethane composition is injected. Injection method.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9010021A JPH10202673A (en) | 1997-01-23 | 1997-01-23 | Injection method for two component type foamed urethane composition |
KR1019997006676A KR20000070441A (en) | 1997-01-23 | 1998-01-23 | Two-pack urethane foam composition, and two-pack urethane foam composition packing apparatus and method |
US09/355,035 US6337355B1 (en) | 1997-01-23 | 1998-01-23 | Two-pack urethane foam composition |
EP98900998A EP1020273B2 (en) | 1997-01-23 | 1998-01-23 | Urethane foam formed from a two-pack urethan foam composition |
PCT/JP1998/000269 WO1998032580A1 (en) | 1997-01-23 | 1998-01-23 | Two-pack urethane foam composition, and two-pack urethane foam composition packing apparatus and method |
CA 2278683 CA2278683C (en) | 1997-01-23 | 1998-01-23 | Two-pack urethane foam composition, and two-pack urethane foam composition injecting apparatus and method |
EP20080158466 EP1970184A3 (en) | 1997-01-23 | 1998-01-23 | Two-pack urethane foam composition and two-pack urethane foam composition injecting apparatus and method |
DE69840213T DE69840213D1 (en) | 1997-01-23 | 1998-01-23 | TWO COMPONENT URETHANSCHAUMZUSAMMENSTELLUNG |
US09/986,675 US6866804B2 (en) | 1997-01-23 | 2001-11-09 | Two-pack urethane foam composition, and two-pack urethane foam composition injecting apparatus and method |
US11/025,152 US7459107B2 (en) | 1997-01-23 | 2004-12-30 | Two-pack urethane foam composition, and two-pack urethane foam composition injecting apparatus and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9010021A JPH10202673A (en) | 1997-01-23 | 1997-01-23 | Injection method for two component type foamed urethane composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10202673A true JPH10202673A (en) | 1998-08-04 |
Family
ID=11738755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9010021A Pending JPH10202673A (en) | 1997-01-23 | 1997-01-23 | Injection method for two component type foamed urethane composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10202673A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011006327A (en) * | 2009-06-23 | 2011-01-13 | Model Create:Kk | Dead body fluid leakage-preventing agent and body fluid leakage-preventing method using the same |
JP2011006329A (en) * | 2009-06-23 | 2011-01-13 | Model Create:Kk | Dead body-treating device |
CN110317312A (en) * | 2018-03-30 | 2019-10-11 | 马自达汽车株式会社 | Dual component thermosetting urethane resin compositions and preparation method thereof |
-
1997
- 1997-01-23 JP JP9010021A patent/JPH10202673A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011006327A (en) * | 2009-06-23 | 2011-01-13 | Model Create:Kk | Dead body fluid leakage-preventing agent and body fluid leakage-preventing method using the same |
JP2011006329A (en) * | 2009-06-23 | 2011-01-13 | Model Create:Kk | Dead body-treating device |
CN110317312A (en) * | 2018-03-30 | 2019-10-11 | 马自达汽车株式会社 | Dual component thermosetting urethane resin compositions and preparation method thereof |
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