JP6812093B2 - 無機充填材粒子及びそれを用いた立体造形用樹脂組成物 - Google Patents
無機充填材粒子及びそれを用いた立体造形用樹脂組成物 Download PDFInfo
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Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
- Graft Or Block Polymers (AREA)
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Description
表1は実施例及び比較例で使用するガラス粒子の組成及び特性を示している。
まずイソホロンジイソシアネート、モルホリンアクリルアミド及びジブチル錫ジラウレートをオイルバスで加熱した。次に、グリセリンモノメタクリレートモノアクリレートにメチルヒドロキノンを均一に混合溶解させた液を入れ撹拌混合して反応させた。さらに、ペンタエリスリトールのプロピレンオキサイド4モル付加物(ペンタエリスリトールの4個の水酸基にプロピレンオキサイドをそれぞれ1モル付加したもの)を加えて反応させることにより、ウレタンアクリレートオリゴマーとモルホリンアクリルアミドを含む反応生成物を作製した。
光硬化性樹脂70体積%、無機充填材粒子30体積%の割合で混合し、3本ローラーにより混練を行い、均質に無機充填材粒子を分散させたペースト状樹脂組成物を得た。樹脂組成物の粘度を、B型粘度計を用いてズリ速度1s−1、測定温度25℃、センサー種類SC4−14の条件で測定した。結果を表2に示す。
Claims (10)
- ガラス粒子と、前記ガラス粒子の表面を被覆する平均粒子径D50が1μm未満の無機微粒子からなる無機充填材粒子と、硬化性樹脂とを含有することを特徴とする立体造形用樹脂組成物であって、前記ガラス粒子の表面に前記無機微粒子が結着している立体造形用樹脂組成物。
- 前記ガラス粒子の表面に前記無機微粒子がめり込み結着していることを特徴とする請求項1に記載の立体造形用樹脂組成物。
- 前記無機微粒子の軟化点が前記ガラス粒子の軟化点より100℃以上高いことを特徴とする請求項1又は2に記載の立体造形用樹脂組成物。
- 前記無機微粒子の比表面積が1m2/g以上であることを特徴とする請求項1〜3のいずれか一項に記載の立体造形用樹脂組成物。
- 前記無機微粒子が、SiO2、Al2O3、MgO、CaO、BaO、ZnO、ZrO2及びTiO2から選択される少なくとも1種であることを特徴とする請求項1〜4のいずれか一項に記載の立体造形用樹脂組成物。
- 前記ガラス粒子の平均粒子径D50が1μm以上であることを特徴とする請求項1〜5のいずれか一項に記載の立体造形用樹脂組成物。
- 前記ガラス粒子が略球状であることを特徴とする請求項1〜6のいずれか一項に記載の立体造形用樹脂組成物。
- 前記ガラス粒子100質量部に対して、前記無機微粒子を0.1質量部以上含有することを特徴とする請求項1〜7のいずれか一項に記載の立体造形用樹脂組成物。
- ガラス粒子と、前記ガラス粒子の表面を被覆する平均粒子径D50が1μm未満の無機微粒子からなる無機充填材粒子を製造するための方法であって、前記無機微粒子の軟化点が前記ガラス粒子の軟化点より150℃以上高く、前記ガラス粒子と前記無機微粒子を混合した後、前記ガラス粉末の軟化点±100℃の温度範囲で熱処理することを特徴とする無機充填材粒子の製造方法。
- 樹脂組成物からなる液状層に選択的に活性エネルギー光線を照射して所定のパターンを有する硬化層を形成し、前記硬化層上に新たな液状層を形成した後に活性エネルギー線を照射して前記硬化層と連続した所定パターンを有する新たな硬化層を形成し、所定の立体造形物が得られるまで前記硬化層の積層を繰り返す立体造形物の製造方法であって、樹脂組成物として、請求項1〜8のいずれか一項に記載の立体造形用樹脂組成物を使用することを特徴とする立体造形物の製造方法。
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| JP2015128298A JP6812093B2 (ja) | 2015-06-26 | 2015-06-26 | 無機充填材粒子及びそれを用いた立体造形用樹脂組成物 |
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