JPH05318611A - Production of foamed polyurethane molded object - Google Patents
Production of foamed polyurethane molded objectInfo
- Publication number
- JPH05318611A JPH05318611A JP17363292A JP17363292A JPH05318611A JP H05318611 A JPH05318611 A JP H05318611A JP 17363292 A JP17363292 A JP 17363292A JP 17363292 A JP17363292 A JP 17363292A JP H05318611 A JPH05318611 A JP H05318611A
- Authority
- JP
- Japan
- Prior art keywords
- resin powder
- foamed
- molded object
- polyurethane
- thermosetting resin
- 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
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車用天井材に好適
な発泡ポリウレタン成型物の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a foamed polyurethane molded article suitable for an automobile ceiling material.
【０００２】[0002]
【従来の技術】発泡ポリウレタンシートを利用した自動
車用成型天井材の芯材としては、ヒートセット性をもた
せるために発泡ポリウレタンシートに水溶性メラミン系
樹脂を含浸し乾燥させた後、金型内で熱処理することに
より成型している。しかしながらこの方法では、メラミ
ン系樹脂が水溶性のため乾燥性が劣っている。また発泡
ポリウレタンシートは崇高のため、長尺のものを得るの
が困難であり、そのために含浸時にジョイントの頻度が
多くなり煩雑となる。以上の理由により、この方法によ
る発泡ポリウレタン成型物の製造は困難であった。2. Description of the Related Art As a core material for a molded ceiling material for automobiles using a foamed polyurethane sheet, a foamed polyurethane sheet is impregnated with a water-soluble melamine resin in order to have heat setting property, and then dried in a mold. Molded by heat treatment. However, in this method, the drying property is poor because the melamine-based resin is water-soluble. Further, since the foamed polyurethane sheet is sublime, it is difficult to obtain a long one, and therefore, the frequency of joints increases during impregnation, which complicates the process. For the above reasons, it was difficult to produce a foamed polyurethane molded product by this method.
【０００３】[0003]
【発明が解決しようとする課題】本発明者らは、従来の
方法を改良すべく鋭意研究した結果、熱硬化性樹脂粉末
を含有する発泡性ポリウレタン組成物を発泡させて、未
硬化の熱硬化性樹脂粉末を含有する発泡シートを得た
後、金型内で熱処理することにより、含浸処理を行うこ
となしに良好に型付けされヒートセットされた発泡ポリ
ウレタン成型物が容易に得られることを見出して、本発
明に至ったものである。DISCLOSURE OF THE INVENTION As a result of intensive studies to improve the conventional method, the present inventors have foamed a foamable polyurethane composition containing a thermosetting resin powder to give an uncured thermosetting composition. After obtaining a foamed sheet containing a water-soluble resin powder, by heat treatment in a mold, it was found that a well-shaped and heat-set polyurethane foam molding can be easily obtained without impregnation. The present invention has been achieved.
【０００４】[0004]
【課題を解決するための手段】本発明は、発泡ポリウレ
タン成型物の製造において、熱硬化性樹脂粉末を含有す
る発泡性ポリウレタン組成物を発泡させて、未硬化の熱
硬化性樹脂粉末を含有する発泡シートを得た後、金型内
で熱処理することを特徴とする。According to the present invention, in the production of a foamed polyurethane molded article, an expandable polyurethane composition containing a thermosetting resin powder is foamed to contain an uncured thermosetting resin powder. It is characterized in that after obtaining the foamed sheet, it is heat-treated in a mold.
【０００５】本発明における熱硬化性樹脂粉末として
は、メラミン樹脂粉末、フェノール樹脂粉末、ジアリル
フタレート樹脂粉末、不飽和ポリエステル樹脂粉末、エ
ポキシ樹脂粉末などのオリゴマーまたは比較的低分子量
の樹脂粉末が一般に使用されるが、高分子量の樹脂粉末
とオリゴマーまたは低分子量の樹脂粉末との混合樹脂粉
末を使用してもよい。発泡性ポリウレタン組成物に対す
る添加量は、通常５〜６０重量％、望ましくは１０〜３
０重量％である。添加量が５重量％未満では、ヒートセ
ット性が劣り、また６０重量％を超えると、発泡を阻害
したり発泡シートの柔軟性を低下させて成型時に破れや
皺が発生するため好ましくない。なお成型時間を短縮さ
せるために、発泡性ポリウレタン組成物に予め硬化触媒
を混合してもよい。As the thermosetting resin powder in the present invention, an oligomer such as melamine resin powder, phenol resin powder, diallyl phthalate resin powder, unsaturated polyester resin powder, epoxy resin powder or a resin powder having a relatively low molecular weight is generally used. However, a mixed resin powder of a high molecular weight resin powder and an oligomer or a low molecular weight resin powder may be used. The amount added to the expandable polyurethane composition is usually 5 to 60% by weight, preferably 10 to 3%.
It is 0% by weight. If the addition amount is less than 5% by weight, the heat setting property is poor, and if it exceeds 60% by weight, foaming is hindered or the flexibility of the foamed sheet is reduced, and tearing or wrinkling occurs during molding, which is not preferable. A curing catalyst may be mixed in advance with the foamable polyurethane composition in order to shorten the molding time.
【０００６】発泡性ポリウレタン組成物および発泡条件
としては、金型内での熱処理による成型に支障のない限
り特に限定されるものではなく、従来公知の組成物およ
び発泡条件の中から適宜選択される（ポリウレタンフォ
ーム、今井嘉夫著、高分子刊行会発行；ポリウレタン樹
脂ハンドブック、岩田敬治編、日刊工業新聞社発行参
照）。また必要に応じて発泡性ポリウレタン組成物に顔
料、充填剤、繊維強化材などを添加してもよい。The foamable polyurethane composition and the foaming conditions are not particularly limited as long as they do not interfere with the molding by heat treatment in the mold, and are appropriately selected from conventionally known compositions and foaming conditions. (Polyurethane foam, written by Yoshio Imai, published by Kobunshi Kogakukai; published by Polyurethane Resin Handbook, edited by Keiji Iwata, published by Nikkan Kogyo Shimbun). If necessary, a pigment, a filler, a fiber reinforcing material and the like may be added to the foamable polyurethane composition.
【０００７】得られた未硬化の熱硬化性樹脂粉末を含有
する発泡ポリウレタンシートは、金型内で熱処理するこ
とにより、良好に型付けされヒートセットされた成型物
を容易に製造することができる。また金型内での成型に
おいて、片面または両面に含浸あるいは未含浸シートを
挿入することにより、良好に型付けされヒートセットさ
れた積層成型物を得ることができる。The foamed polyurethane sheet containing the uncured thermosetting resin powder thus obtained can be easily molded into a well-shaped and heat-set molded article by heat treatment in a mold. Further, in molding in a mold, by inserting an impregnated or non-impregnated sheet on one side or both sides, it is possible to obtain a laminated molded article which is well shaped and heat set.
【０００８】[0008]
【実施例１】下記組成のポリオール組成物に、予めメラ
ミン樹脂硬化触媒（キャタニットＣ、日東化学社製）
０．４重量部を混合したメラミン樹脂粉末（ニカレジン
Ｓ−３０５、日本カーバイト社製）２０重量部を混合
し、さらにジイソシアネート（ミリオネートＭＲ−１０
０、日本ポリウレタン工業社製）５５．４重量部を速や
かに混合した後、シリコーン離型処理されたポリエチレ
ンテレフタレートフィルムに挟んで、１０ｍｍ厚の未硬
化のメラミン樹脂粉末を含有する発泡シートを得た。 ポリオール組成物 ポリオール（ＦＡ７０３、三洋化成工業社製） ９５ 重量部 トリエタノールアミン ５ 重量部 水 ２．５重量部 発泡触媒（Ｕｃａｔ１０００、サンアプロ社製） １ 重量部Example 1 A melamine resin curing catalyst (Catanit C, manufactured by Nitto Chemical Co., Ltd.) was previously added to a polyol composition having the following composition.
20 parts by weight of melamine resin powder (Nikaresin S-305, manufactured by Nippon Carbide Co.) mixed with 0.4 parts by weight is mixed, and further diisocyanate (Millionate MR-10) is mixed.
0, manufactured by Nippon Polyurethane Industry Co., Ltd.) was quickly mixed, and then sandwiched between polyethylene release-treated polyethylene terephthalate films to obtain a foamed sheet containing uncured melamine resin powder having a thickness of 10 mm. . Polyol composition Polyol (FA703, Sanyo Kasei Co., Ltd.) 95 parts by weight Triethanolamine 5 parts by weight Water 2.5 parts by weight Foaming catalyst (Ucat1000, manufactured by San-Apro) 1 part by weight
【０００９】ポリエチレンテレフタレートフィルムを剥
離して２４時間後、５ｍｍ厚のクリアランスを有する離
型処理された金型内で、１５０℃、２分間熱処理したと
ころ、良好に型付けされヒートセットされた発泡ポリウ
レタン成型物が得られた。Twenty-four hours after the polyethylene terephthalate film was peeled off, heat treatment was carried out at 150 ° C. for 2 minutes in a mold having a clearance of 5 mm, and the polyurethane foam was molded properly and heat set. The thing was obtained.
【００１０】[0010]
【実施例２】実施例１のメラミン樹脂混合物粉末の代り
に、ノボラック樹脂粉末（ＡＨ−１２８、リグナイト工
業社製）３０重量部を使用する以外は、実施例１と同様
の操作を行ったところ、同様の発泡ポリウレタン成型物
が得られた。Example 2 The same operation as in Example 1 was carried out except that 30 parts by weight of novolac resin powder (AH-128, manufactured by Lignite Industry Co., Ltd.) was used in place of the melamine resin mixture powder of Example 1. A similar foamed polyurethane molded product was obtained.
【００１１】[0011]
【実施例３】実施例１のメラミン樹脂混合物粉末の代り
に、予めベンゾイルパーオキサイド硬化触媒１重量部を
混合したジアリルフタレート樹脂粉末（ダイソーダッ
プ、ダイソー社製）２０重量部を使用する以外は、実施
例１と同様の操作を行ったところ、同様の発泡ポリウレ
タン成型物が得られた。Example 3 In place of the melamine resin mixture powder of Example 1, 20 parts by weight of diallyl phthalate resin powder (Daiso Dup, manufactured by Daiso) mixed with 1 part by weight of a benzoyl peroxide curing catalyst in advance was used. When the same operation as in Example 1 was performed, the same foamed polyurethane molded product was obtained.
【００１２】[0012]
【比較例】実施例１においてメラミン樹脂混合物粉末を
使用しないで、以下実施例１と同様の操作を行ったとこ
ろ、得られた発泡ポリウレタン成型物は元の状態に復元
して型付けされず、ヒートセットされなかった。[Comparative Example] The same operation as in Example 1 was carried out without using the melamine resin mixture powder in Example 1, and the obtained foamed polyurethane molded product was restored to its original state and was not molded. It wasn't set.
【００１３】[0013]
【発明の効果】熱硬化性樹脂粉末を含有する発泡性ポリ
ウレタン組成物を発泡させて、未硬化の熱硬化性樹脂粉
末を含有する発泡シートを得た後、金型内で熱処理する
ことにより、含浸処理を行うことなしに良好に型付けさ
れヒートセットされた発泡ポリウレタン成型物が容易に
得られる。The foamable polyurethane composition containing the thermosetting resin powder is foamed to obtain a foamed sheet containing the uncured thermosetting resin powder, which is then heat-treated in a mold. It is possible to easily obtain a well-molded and heat-set foamed polyurethane molded article without impregnation.
───────────────────────────────────────────────────── 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 Ｂ２９Ｌ 7:00 4Ｆ 31:58 4Ｆ Ｃ０８Ｌ 75:04 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location B29L 7:00 4F 31:58 4F C08L 75:04
Claims (1)
レタン組成物を発泡させて、未硬化の熱硬化性樹脂粉末
を含有する発泡シートを得た後、金型内で熱処理するこ
とを特徴とする発泡ポリウレタン成型物の製造方法1. A foamable polyurethane composition containing a thermosetting resin powder is foamed to obtain a foamed sheet containing an uncured thermosetting resin powder, which is then heat-treated in a mold. Method for producing foamed polyurethane molded article
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17363292A JPH05318611A (en) | 1992-05-21 | 1992-05-21 | Production of foamed polyurethane molded object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17363292A JPH05318611A (en) | 1992-05-21 | 1992-05-21 | Production of foamed polyurethane molded object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05318611A true JPH05318611A (en) | 1993-12-03 |
Family
ID=15964213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17363292A Pending JPH05318611A (en) | 1992-05-21 | 1992-05-21 | Production of foamed polyurethane molded object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05318611A (en) |
-
1992
- 1992-05-21 JP JP17363292A patent/JPH05318611A/en active Pending
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