JPH0641338A - Production of heat-settable ecpanded polyurethane sheet - Google Patents
Production of heat-settable ecpanded polyurethane sheetInfo
- Publication number
- JPH0641338A JPH0641338A JP36110991A JP36110991A JPH0641338A JP H0641338 A JPH0641338 A JP H0641338A JP 36110991 A JP36110991 A JP 36110991A JP 36110991 A JP36110991 A JP 36110991A JP H0641338 A JPH0641338 A JP H0641338A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- resin powder
- settable
- thermosetting resin
- polyurethane
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に自動車用成型天井
材の芯材に使用されるヒートセット性発泡ポリウレタン
シート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 heat-settable polyurethane foam sheet used as a core material for a molded ceiling material for automobiles.
【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
樹脂を含浸させることが行われている。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
に、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 a heat setting property. However, in this method, the melamine-based resin is water-soluble and thus has poor drying properties. In addition, it is difficult to obtain a long polyurethane foam sheet because it is sublime, and this increases the frequency of joints during impregnation and complicates it.
【０００３】[0003]
【発明が解決しようとする課題】本発明者は、従来の方
法を改良すべく鋭意研究した結果、発泡性ポリウレタン
組成物に熱硬化性樹脂粉末を含有させ、発泡させること
により、含浸処理を行うことなしにすぐれたヒートセッ
ト性を有する発泡ポリウレタンシートが容易に得られる
ことを見出して、本発明に至ったものである。DISCLOSURE OF INVENTION Problems to be Solved by the Invention As a result of earnest research aimed at improving the conventional method, the present inventor performs impregnation treatment by adding a thermosetting resin powder to a foamable polyurethane composition and foaming the composition. The present invention has been completed by finding that a foamed polyurethane sheet having excellent heat setting property can be easily obtained without any problem.
【０００４】[0004]
【課題を解決するための手段】本発明は、ヒートセット
性発泡ポリウレタンシートの製造方法において、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
トを得ることを特徴とする。The present invention provides a method for producing a heat-settable polyurethane foam sheet, wherein an expandable polyurethane composition containing a thermosetting resin powder is foamed to obtain an uncured thermosetting resin powder. It is characterized in that a foamed sheet containing is obtained.
【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等が
使用され、ポリウレタン組成物に対する添加量は、通常
５〜３０重量％、望ましくは１０〜２０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３０重量％を超えると、発泡を阻害したり発泡製品の
柔軟性を低下させるため好ましくない。なおヒートセッ
ト時間を短縮させるために、熱硬化性樹脂粉末に予め硬
化触媒を混合してもよい。As the thermosetting resin powder in the present invention, melamine resin powder, phenol resin powder, diallyl phthalate resin powder, unsaturated polyester resin powder and the like are used, and the addition amount to the polyurethane composition is usually 5 to 30% by weight. %, Preferably 10 to 20% by weight.
If the addition amount is less than 5% by weight, the heat setting property is poor, and if it exceeds 30% by weight, foaming is hindered or flexibility of the foamed product is lowered, which is not preferable. In addition, in order to shorten the heat setting time, a curing catalyst may be mixed in advance with the thermosetting resin powder.
【０００６】発泡性ポリウレタン組成物および発泡条件
としては、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）。The foamable polyurethane composition and the foaming conditions are not particularly limited, and are appropriately selected from conventionally known compositions and foaming conditions (polyurethane foam, by Yoshio Imai, published by Kobunshi Kogakukai. See Polyurethane Resin Handbook, edited by Keiji Iwata, published by Nikkan Kogyo Shimbun).
【０００７】得られた未硬化の熱硬化性樹脂粉末を含有
するヒートセット性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、良好に型付けされた成型物を
製造することができる。金型内の成型において，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、良好に型付けされた積層成型物を得ることがで
き、特に自動車用成型天井材として有用である。The heat-settable polyurethane foam sheet containing the uncured thermosetting resin powder obtained can be heat-treated in a mold to produce a well-shaped molded product. By inserting an impregnated or unimpregnated sheet on one side or both sides in molding in a mold, a well-molded laminated molded product can be obtained, which is particularly useful as a molded ceiling material for automobiles.
【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（Ｃｒ ＭＤＩ、日本ポリ
ウレタン工業社製）６１．５重量部をすみやかに混合し
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５ｍｍ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（ＦＡ−７０３、三洋化成工業社製） ９５重量部 トリエタノールアミン ５ 〃 水 ２．５〃 発泡触媒（Ｕｃａｔ １０００、三洋化成工業社製） １ 〃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, and 61.5 parts by weight of diisocyanate (Cr MDI, manufactured by Nippon Polyurethane Industry Co., Ltd.) were immediately added. After mixing, the product was sandwiched between silicone release-treated polyethylene terephthalate films to obtain a foamed sheet containing uncured melamine resin powder having a thickness of 5 mm. Polyol composition Polyol (FA-703, Sanyo Kasei Co., Ltd.) 95 parts by weight Triethanolamine 5 〃 Water 2.5 〃 Foaming catalyst (Ucat 1000, Sanyo Kasei Co., Ltd.) 1 〃
【０００９】ポリエチレンテレフタレートフィルムを剥
離した後、２ｍｍ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シートか得られ
た。After peeling off the polyethylene terephthalate film, it was heat-treated at 150 ° C. for 2 minutes in a mold having a clearance of 2 mm, and a foamed sheet which was well molded and heat-set 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、同様の発泡シートが得られた。Example 2 The same operation as in Example 1 was carried out except that 30 parts by weight of novolak 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 sheet 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、同様の発泡シートが
得られた。Example 3 Instead of using the melamine resin mixture powder of Example 1, 20 parts by weight of diallyl phthalate resin powder (Daiso Dup, manufactured by Daiso Co.) 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, a similar foamed sheet 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て得ら
れた発泡シートを、実施例１と同様に金型内で熱処理し
たところ、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 A foamed sheet obtained by performing the same operation as in Example 1 below without using the melamine resin mixture powder in Example 1 was heat-treated in a mold in the same manner as in Example 1, and was molded. Objects are restored to their original state and untyped,
It wasn't heat set.
【００１３】[0013]
【発明の効果】発泡性ポリウレタン組成物に、熱硬化性
樹脂粉末を含有させ、発泡させることにより、含浸処理
を行うことなしにすぐれたヒートセット性を有する発泡
ポリウレタンシートを容易に製造することができる。EFFECTS OF THE INVENTION By adding a thermosetting resin powder to a foamable polyurethane composition and foaming it, a foamed polyurethane sheet having an excellent heat setting property can be easily manufactured without impregnation treatment. it can.
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ることを特徴とするヒートセ
ット性発泡ポリウレタンシートの製造方法。1. A heat-settable polyurethane foam sheet, comprising foaming a foamable polyurethane composition containing a thermosetting resin powder to obtain a foam sheet containing an uncured thermosetting resin powder. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36110991A JPH0641338A (en) | 1991-12-18 | 1991-12-18 | Production of heat-settable ecpanded polyurethane sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36110991A JPH0641338A (en) | 1991-12-18 | 1991-12-18 | Production of heat-settable ecpanded polyurethane sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0641338A true JPH0641338A (en) | 1994-02-15 |
Family
ID=18472240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36110991A Pending JPH0641338A (en) | 1991-12-18 | 1991-12-18 | Production of heat-settable ecpanded polyurethane sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641338A (en) |
-
1991
- 1991-12-18 JP JP36110991A patent/JPH0641338A/en active Pending
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