JP3935468B2 - 長繊維強化ポリオレフィン樹脂用ロービング及びそれを用いた樹脂成形用材料 - Google Patents
長繊維強化ポリオレフィン樹脂用ロービング及びそれを用いた樹脂成形用材料 Download PDFInfo
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- JP3935468B2 JP3935468B2 JP2003433226A JP2003433226A JP3935468B2 JP 3935468 B2 JP3935468 B2 JP 3935468B2 JP 2003433226 A JP2003433226 A JP 2003433226A JP 2003433226 A JP2003433226 A JP 2003433226A JP 3935468 B2 JP3935468 B2 JP 3935468B2
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Images
Description
後記表1、2の上段に示すような配合割合で、実施例1、比較例1〜7の長繊維強化ポリオレフィン樹脂用ロービング、及びそのロービングをマトリックス樹脂に含浸させた長繊維強化ポリオレフィン樹脂成形用材料(ペレット)を製造した。なお、それぞれの集束剤及びマトリックス樹脂の具体的な原料としては以下の材料を用いた。
γ−アミノプロピルトリエトキシシラン
酸化ポリプロピレンエマルジョン (重量平均分子量25,000、酸価45)
界面活性剤A (ポリオキシエチレン誘導体、HLB13)
界面活性剤B (ポリオキシエチレン誘導体、HLB12.8)
低分子量ポリエチレンワックスディスパージョン (三井化学製:品番は表中に記載)
ポリプロピレン樹脂 (HOMO、MI=30)
マレイン酸変性ポリプロピレン樹脂 (HOMO、MI=10、酸価10)
ハイドロパーオキサイド
実施例及び比較例のロービングを評価した結果をまとめて後記表1、2の中段に示す。なお、引き取りテンション、発生毛羽量、開繊幅(開繊状態)については、図1に示すような評価装置を用い、以下の手順及び測定方法によって実施例及び比較例のロービングを評価した。
a)評価用試料(ガラス繊維回巻体)3を指定位置にセットした。
b)ガラス繊維ストランド4の端糸を引き出し、台5上に支持された直径210mmの予備開繊バー1及び予備開繊バー2に通した。
c)開繊BOX6中の図示しない直径5mmの上下に互い違いに配置された5本の串からなる(上下それぞれピッチ12mm)からなる開繊串にストランド4を通し、引取装置7にストランド4の端糸をかけた。
d)開繊BOX6の開繊串の上部バー8に所定の重りを載せることで上下の串で挟み込み、通過するストランド4に荷重をかけた。
e)引取装置7を引取速度18m/minで所定時間起動させた。
f)引取装置7の起動中にテンションメーターを使用してストランド4の引取テンションを計測した。
g)引き続き、開繊BOX6の開繊串中を通るストランド4の幅をノギスで計測した。また、開繊状態を目視で観察し、○:良好(均一に開繊)、△:普通(部分的に開繊)、×:悪い(開繊性劣る)、の3段階で評価した。
h)所定時間引取後、サクションで吸引された開繊BOX6内のメッシュ上の毛羽を回収し、毛羽重量を精秤した。
i)測定荷重を替え、引取装置7を所定時間起動させた後、f)〜h)を繰り返した。
j)試料交換時は前試料のストランドを予備開繊バー1手前で裁断し、新たに評価する試料を指定位置にセット後、端糸を結束した。
k)結束端糸部を引取装置まで通過させ、工程の点検後、d)〜j)の手順を繰り返した。
実施例及び比較例のペレットの物性を評価した。その結果をまとめて表1、2の下段に示す。
3 評価用試料
4 ストランド
5 台
6 開繊BOX
7 引取装置
8 バー
Claims (3)
- 長繊維強化ポリオレフィン樹脂成形品の強化繊維として用いられ、複数のガラス繊維に集束剤が付着されたロービングであって、
前記集束剤が、シランカップリング剤と、酸変性ポリプロピレン樹脂と、ポリエチレンワックスの平均粒子径が0.1〜3.0μmで、ポリエチレンワックスの環球法による軟化点が120〜140℃であるポリエチレンワックス水分散体とを含有することを特徴とする長繊維強化ポリオレフィン樹脂用ロービング。 - 前記集束剤における前記ポリエチレンワックスの含有量が、前記集束剤の全固形分質量に対して1〜20質量%である請求項1に記載の長繊維強化ポリオレフィン樹脂用ロービング。
- 請求項1又は2に記載の長繊維強化ポリオレフィン樹脂用ロービングを、ポリオレフィン樹脂からなるマトリックス樹脂に含浸してなり、前記マトリックス樹脂中に、集束剤が付着されたガラス繊維が実質的に同一長さで、かつ、同一方向に並列して配置されていることを特徴とする長繊維強化ポリオレフィン樹脂成形用材料。
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