JPH0711033A - Production of heat-setting foamed polyurethane sheet - Google Patents
Production of heat-setting foamed polyurethane sheetInfo
- Publication number
- JPH0711033A JPH0711033A JP21206293A JP21206293A JPH0711033A JP H0711033 A JPH0711033 A JP H0711033A JP 21206293 A JP21206293 A JP 21206293A JP 21206293 A JP21206293 A JP 21206293A JP H0711033 A JPH0711033 A JP H0711033A
- Authority
- JP
- Japan
- Prior art keywords
- thermosetting resin
- heat
- sheet
- fine powder
- foamed
- 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)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
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、ヒートセット性を付与
するために、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嵩高のた
め、長尺のものを得ることが困難であり、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 impart heat setting properties. However, in this method, the melamine-based resin is water-soluble, so that the drying property is poor. In addition, since the polyurethane foam sheet is bulky, it is difficult to obtain a long polyurethane sheet, and therefore, the frequency of joints increases during impregnation, which makes the sheet complicated.
【０００３】本出願人は、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、すでに特許出願（特願平３−３６１１０９号）
している。しかし上記方法では、十分なヒートセット性
を得るためには、熱硬化性樹脂粉末の添加量が１０重量
％以上必要となるため、熱硬化性樹脂粉末の添加による
製造工程上の困難が増大するとともに、反応発泡に制約
を受けたり、発泡ポリウレタンシートの風合いを損ねた
りする。The Applicant has been able to add a thermosetting resin powder to a foamable polyurethane composition and foam it to obtain a foamable polyurethane composition.
We have already applied for a patent (Japanese Patent Application No. 3-361109), finding that a polyurethane foam sheet with excellent heat setting properties can be easily obtained without performing impregnation.
are doing. However, in the above method, in order to obtain sufficient heat setting property, the addition amount of the thermosetting resin powder is required to be 10% by weight or more, so that the difficulty in the manufacturing process due to the addition of the thermosetting resin powder increases. At the same time, the reaction foaming is restricted and the texture of the foamed polyurethane sheet is impaired.
【０００４】[0004]
【発明が解決しようとする課題】本発明者らは、上記方
法を改良すべくさらに研究した結果、発泡性ポリウレタ
ン組成物にホモジナイザーで微粉砕処理した熱硬化性樹
脂微粉末を含有させ、発泡させることにより、熱硬化性
樹脂微粉末の添加量が著しく減少するにもかかわらず、
発泡ポリウレタンシートのヒートセット性が著しく向上
することを見出して、本発明に至ったものである。DISCLOSURE OF THE INVENTION As a result of further research to improve the above-mentioned method, the present inventors have made a foamable polyurethane composition contain a thermosetting resin fine powder finely pulverized with a homogenizer to foam it. As a result, the addition amount of the thermosetting resin fine powder is significantly reduced,
The present invention has been completed by finding that the heat setting property of the foamed polyurethane sheet is remarkably improved.
【０００５】[0005]
【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、ポリオ
ール成分またはポリイソシアネート成分中に熱硬化性樹
脂粉末を添加して、ホモジナイザーで微粉砕処理した熱
硬化性樹脂微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微粉末を含有する
発泡シートを得ることを特徴とする。Means for Solving the Problems The present invention provides a method for producing a heat-settable polyurethane foam sheet, in which a thermosetting resin powder is added to a polyol component or a polyisocyanate component and finely pulverized with a homogenizer. A foamable polyurethane composition containing a fine powder of a thermosetting resin is foamed to obtain a foamed sheet containing a fine powder of an uncured thermosetting resin.
【０００６】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、ポリオール成分またはポリイソシアネート成
分のいずれかに添加して、ホモジナイザーで微粉砕処理
されるが、通常ポリオール成分中で微粉砕処理されるこ
とが望ましい。ホモジナイザーによる微粉砕処理条件
は、ホモジナイザーの性能、１バッチ当たりの容量、回
転速度、処理時間などにより適宜選択される。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, which are added to either the polyol component or the polyisocyanate component. Although it is finely pulverized with a homogenizer, it is usually desirable to be finely pulverized in a polyol component. The conditions for fine pulverization by the homogenizer are appropriately selected depending on the performance of the homogenizer, the capacity per batch, the rotation speed, the processing time, and the like.
【０００７】熱硬化性樹脂微粉末のポリウレタン組成物
に対する添加量は、通常１〜３０重量％、望ましくは２
〜１０重量％である。添加量が１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
化性樹脂微粉末に予め硬化触媒を混合してもよい。The amount of the thermosetting resin fine powder added to the polyurethane composition is usually 1 to 30% by weight, preferably 2
10 to 10% by weight. If the addition amount is less than 1% 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 fine powder.
【０００８】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 may be appropriately selected from conventionally known compositions and foaming conditions (polyurethane foam, Yoshio Imai, published by Kobunshi Kogakukai. See Polyurethane Resin Handbook, edited by Keiji Iwata, published by Nikkan Kogyo Shimbun).
【０００９】得られた未硬化の熱硬化性樹脂微粉末を含
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。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、型付けされた積層成型
品を得ることができ、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 fine powder thus obtained is easily heat-set in a mold to easily produce a well-shaped and heat-set molded product. be able to. In molding in a mold, by inserting an impregnated or unimpregnated sheet on one side or both sides, a molded laminated molded product can be obtained, which is particularly useful as a molded ceiling material for automobiles.
【００１０】[0010]
【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）
０．１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）４重量部を混合し
て、ホモジナイザー（ＴＫ ＨＯＭＯ ＭＩＸＥＲ、特
殊機化工業社製）で４５００ｒｐｍ、１０分間微粉砕処
理し、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
樹脂微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（Ｕｃａｔ１０００、サンアプロ社製） 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.
4 parts by weight of melamine resin powder (Nikaresin S-305, manufactured by Nippon Carbide Co.) mixed with 0.1 parts by weight was mixed with a homogenizer (TK HOMO MIXER, manufactured by Tokushu Kika Kogyo Co., Ltd.) at 4500 rpm for 10 minutes. After pulverizing and further rapidly mixing 61.5 parts by weight of diisocyanate (Cr-MDI, manufactured by Nippon Polyurethane Industry Co., Ltd.), it was sandwiched between polyethylene release-treated polyethylene terephthalate films and 5 mm thick uncured melamine resin was added. A foamed sheet containing the powder was obtained. Polyol composition Polyol (FA-703, manufactured by Sanyo Kasei Co., Ltd.) 95 parts by weight Triethanolamine 5 〃 Water 2.5 〃 Foaming catalyst (Ucat1000, manufactured by San-Apro) 1 〃
【００１１】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°Ｃ、１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が得られ
た。After peeling off the polyethylene terephthalate film, heat treatment was carried out at 150 ° C. for 1 minute in a mold having a clearance of 2 mm and a foamed sheet which was well shaped and heat set was obtained. .
【００１２】[0012]
【実施例２】実施例１のメラミン樹脂粉末の代りに、ノ
ボラック樹脂粉末（ＡＨ−１２８、リグナイト工業社
製）４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 4 parts by weight of novolak resin powder (AH-128, manufactured by Lignite Industry Co., Ltd.) was used in place of the melamine resin powder of Example 1. A similar foamed sheet was obtained.
【００１３】[0013]
【比較例１】実施例１において、メラミン樹脂硬化触媒
０．５重量部を混合したメラミン樹脂粉末２０重量部を
使用し、ホモジナイザーで微粉砕処理しない以外は、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、１５０°
Ｃ、１分間ではヒートセットされなかったが、１５０°
Ｃ、２分間では良好に型伺けされヒートセットされた発
泡シートが得られた。Comparative Example 1 The same operation as in Example 1 was carried out except that 20 parts by weight of melamine resin powder mixed with 0.5 part by weight of the melamine resin curing catalyst was used in Example 1 and the pulverization treatment was not performed with a homogenizer. The foamed sheet thus obtained was heat-treated in a mold in the same manner as in Example 1 to obtain 150 °
C was not heat set for 1 minute, but 150 °
In C, the foam sheet was heat-set for 2 minutes and the mold was satisfactorily inspected.
【００１４】[0014]
【比較例２】比較例１のメラミン樹脂粉末の代わりに、
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、比較例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。Comparative Example 2 Instead of the melamine resin powder of Comparative Example 1,
The same operation as in Comparative Example 1 was performed except that 30 parts by weight of novolac resin powder (AH-128, manufactured by Lignite Industry Co., Ltd.) was used, and the same foamed sheet was obtained.
【００１５】[0015]
【発明の効果】発泡性ポリウレタン組成物に、ホモジナ
イザーで微粉砕処理した熱硬化性樹脂微粉末を含有さ
せ、発泡させることにより、熱硬化性樹脂微粉末の添加
量が著しく減少し、しかもヒートセット性の著しく向上
した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 fine powder finely pulverized by a homogenizer to a foamable polyurethane composition and foaming the composition, the addition amount of the thermosetting resin fine powder is remarkably reduced, and heat setting is performed. A foamed polyurethane sheet having remarkably improved properties can be easily manufactured.
Claims (1)
ト成分中に熱硬化性樹脂粉末を添加して、ホモジナイザ
ーで微粉砕処理した熱硬化性樹脂微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
樹脂微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 thermosetting resin powder is added to a polyol component or a polyisocyanate component to foam an expandable polyurethane composition containing the thermosetting resin fine powder finely pulverized with a homogenizer to obtain an uncured product. 2. A method for producing a heat-settable polyurethane foam sheet, which comprises obtaining a foamed sheet containing the thermosetting resin fine powder as set forth above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21206293A JPH0711033A (en) | 1993-06-28 | 1993-06-28 | Production of heat-setting foamed polyurethane sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21206293A JPH0711033A (en) | 1993-06-28 | 1993-06-28 | Production of heat-setting foamed polyurethane sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0711033A true JPH0711033A (en) | 1995-01-13 |
Family
ID=16616239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21206293A Pending JPH0711033A (en) | 1993-06-28 | 1993-06-28 | Production of heat-setting foamed polyurethane sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0711033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8410215B2 (en) | 2006-08-23 | 2013-04-02 | Jsr Corporation | Thermoplastic resin composition and molded article obtained from the same |
-
1993
- 1993-06-28 JP JP21206293A patent/JPH0711033A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8410215B2 (en) | 2006-08-23 | 2013-04-02 | Jsr Corporation | Thermoplastic resin composition and molded article obtained from the same |
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