JP2022509638A - 熱可塑性樹脂組成物及びそれを用いた成形品の製造方法 - Google Patents
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Abstract
Description
本出願は、2019年10月31日付の韓国特許出願第10-2019-0138161号及びそれを基に2020年10月26日付で再出願された韓国特許出願第10-2020-0139470号に基づく優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として組み込まれる。
下記の実施例及び比較例で使用した材料は、以下の通りである。
a1)ポリカーボネート樹脂:LG化学社の1330製品を使用した。
a2)ナイロン66樹脂:インビスタ(Invista)社の3602製品を使用した。
a3)ポリブチレンテレフタレート樹脂:LG化学社のGP2000製品を使用した。
a4)変性ポリオレフィン樹脂:無水マレイン酸が約1.5重量%のグラフト率でグラフトされたポリエチレンを使用した。
a5)ナイロン6樹脂:TKケミカル社の2451製品を使用した。
a6)ポリエチレンテレフタレート(PET)樹脂:SKケミカル社のBB8055製品を使用した。
ゾルテック(Zoltek)社のPyrofil製品を使用した。
c1)BET表面積が約250m2/gであるLG化学社のCP1002M製品を使用した。
c2)BET表面積が約150m2/gである大直径の製品を使用した。
c3)BET表面積が約400m2/gである小直径の製品を使用した。
日本黒鉛社の板状型グラファイト製品であるCB-100を使用した。
平均直径が9μmであるBEKAERT社のステンレス繊維を使用した。
熱可塑性樹脂組成物及び成形品を製造するために、下記の図1のような押出機を準備した。このとき、押出機の温度を約250℃~320℃に設定し、回転数を300回転/分に設定した。
下記の表1のように押出機に投入される成分及び含有量を調節した以外は、前記実施例1と同様の方法で熱可塑性樹脂組成物及び成形品を製造した。
下記の表2のように押出機に投入される成分及び含有量を調節した以外は、前記実施例1と同様の方法で熱可塑性樹脂組成物及び成形品を製造した。
前記実施例1~実施例11、及び比較例1~比較例4で製造された成形品を射出機(エンゲル社、80トン)を用いて、物性測定試片に成形した。
*衝撃強度:ISO 180Aに準拠してノッチ付きアイゾット(Notched Izod)衝撃強度を測定した。このとき、試片の厚さは4mmであり、試片にノッチを付けた後に常温(23℃)で測定した。
*屈曲弾性率:ASTM D790に準拠して測定し、試片の厚さは3.2mmであり、測定速度は1.3mm/minに設定した。
*電磁波遮蔽性能:エレクトロ・メトリクス(Electro metrics)社のEM2107Aを用いて、試片の10MHzと1GHzでの電磁波遮蔽性能を測定した。
*外観品質:射出成形された試片の外観を目視で評価し、成形性及び外観が非常に優れた場合には「◎」と評価し、成形性及び外観が優れた場合には「○」と評価し、外観が優れた場合には「△」と評価し、外観が低下した場合には「×」と評価し、外観品質が非常に劣る場合には「××」と評価した。
11 第1投入口
12 第2投入口
13 第3投入口
21 第1混練ブロック
22 第2混練ブロック
23 第3混練ブロック
DR1 第1方向
Claims (14)
- 熱可塑性樹脂、炭素繊維、炭素ナノチューブ、板状型グラファイト、及び金属繊維を含むことを特徴とする、熱可塑性樹脂組成物。
- 前記熱可塑性樹脂は、ナイロン樹脂、ポリカーボネート樹脂、ポリアルキレンテレフタレート樹脂、及び無水マレイン酸変性ポリオレフィン樹脂のうちの少なくとも1つを含むことを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記無水マレイン酸変性ポリオレフィン樹脂は、ポリオレフィン樹脂に無水マレイン酸がグラフト率0.5重量%以上2重量%以下でグラフトされた重合体であることを特徴とする、請求項2に記載の熱可塑性樹脂組成物。
- 前記炭素繊維は、直径が5μm以上15μm以下であることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記炭素繊維の含有量は、前記熱可塑性樹脂100重量部に対して5重量部以上60重量部以下であることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記炭素ナノチューブのBET表面積は200m2/g以上300m2/g以下であることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記炭素ナノチューブの含有量は、前記熱可塑性樹脂100重量部に対して1重量部以上5重量部以下であることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記板状型グラファイトの含有量は、前記熱可塑性樹脂100重量部に対して1重量部以上10重量部以下であることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記金属繊維は、直径が5μm以上20μm以下であることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記熱可塑性樹脂組成物は、エレクトロ・メトリクス(Electro metrics)社のEM2107Aを用いて10MHzの条件での電磁波遮蔽性能(dB)が65MHz以上、または1GHzの条件での電磁波遮蔽性能(dB)が65MHz以上であることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 前記熱可塑性樹脂組成物は、MHzとGHzの周波数領域で50dB以上の電磁波遮蔽が求められる自動車部品又は電気電子部品に使用されることを特徴とする、請求項10に記載の熱可塑性樹脂組成物。
- 前記金属繊維の含有量は、前記熱可塑性樹脂100重量部に対して1重量部以上20重量部以下であることを特徴とする、請求項1に記載の熱可塑性樹脂組成物。
- 熱可塑性樹脂、炭素ナノチューブ及び板状型グラファイトを混練して第1混練物を形成するステップと、
前記第1混練物に炭素繊維を投入し、混練して第2混練物を形成するステップと、
前記第2混練物に金属繊維を投入し、混練して熱可塑性樹脂組成物を形成するステップと、
前記熱可塑性樹脂組成物を成形して成形品を製造するステップとを含むことを特徴とする、成形品の製造方法。 - 請求項1~12のいずれか一項に記載の熱可塑性樹脂組成物を含んでなることを特徴とする、成形品。
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KR20190138161 | 2019-10-31 | ||
KR10-2019-0138161 | 2019-10-31 | ||
KR1020200139470A KR102581385B1 (ko) | 2019-10-31 | 2020-10-26 | 열가소성 수지 조성물 및 이를 이용한 성형품의 제조 방법 |
KR10-2020-0139470 | 2020-10-26 | ||
PCT/KR2020/014842 WO2021086019A1 (ko) | 2019-10-31 | 2020-10-28 | 열가소성 수지 조성물 및 이를 이용한 성형품의 제조 방법 |
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EP (1) | EP3865539A4 (ja) |
JP (1) | JP7174155B2 (ja) |
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JP2009144000A (ja) * | 2007-12-12 | 2009-07-02 | Starlite Co Ltd | 樹脂炭素複合材料 |
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KR102581385B1 (ko) | 2023-09-22 |
KR20210052289A (ko) | 2021-05-10 |
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