JP7255915B2 - 光硬化3dプリントアイテムの製造方法およびその使用法 - Google Patents
光硬化3dプリントアイテムの製造方法およびその使用法 Download PDFInfo
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- JP7255915B2 JP7255915B2 JP2021544706A JP2021544706A JP7255915B2 JP 7255915 B2 JP7255915 B2 JP 7255915B2 JP 2021544706 A JP2021544706 A JP 2021544706A JP 2021544706 A JP2021544706 A JP 2021544706A JP 7255915 B2 JP7255915 B2 JP 7255915B2
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Description
その他、シリコーンオイルを含むコーティングとシリコーンオイルを含まないコーティングのバイオセラミックグリーンコンパクトの焼結した後の収縮率の差異を比較する。図2が示す通り、シリコーンオイルを含むコーティングでは、バイオセラミックの焼結収縮率は明らかに遥かに大きく、バイオセラミック焼結後の緻密化の程度も高いことを示しており、好ましい機械性能を備えることができる。表3はシリコーンオイルを含むバイオセラミックグリーンコンパクトとシリコーンオイルを含まないバイオセラミックグリーンコンパクトの焼結後の収縮率を示す。
異なる種類の油でコーティングしたバイオセラミックグリーンコンパクトを更に比較する。焼結後の収縮率の結果(図3が示す通り)から分かるとおり、油を含むバイオセラミックグリーンコンパクトのサンプル直径の収縮率は、油を含まないバイオセラミックグリーンコンパクトのサンプル直径の収縮率より大きく、その中で、シリコーンオイルの直径と高さの収縮率は最大である。表4は異なる種類の油でコーティングしたバイオセラミックグリーンコンパクトの焼結後の収縮率である。
X線回折を使用してバイオセラミックの構造を分析する。バイオセラミックは高温焼結後に成分内のHApはTCPに分解するので、プリント材料製造時に添加するβ-TCP/HApパウダー比率の違いに基づき、最終的に得られるセラミック比率(直径と高さ)も異なる(図4)。
バイオセラミックの化学組成分析は、走査型電子顕微鏡と組み合わせて使用されるエネルギー分散型分光計(Energy Dispersive Spectrometer;EDS)分析技術によって実行され、バイオセラミックの元素組成を検出する。カルシウムとリンの比率(Ca/P)は1.23~1.41であり、シリコン(Si)含有量は3.0未満である。バイオセラミックの重金属元素分析結果は表6の通りであり、元素セシウム(As)、カドミウム(Cd)と鉛(Pb)はどれも標準仕様を超えておらず、水銀(Hg)は検出されていない。表7はバイオセラミックの化学組成分析である。
光硬化に必要な材料の特性はずり流動化(Shear thinning)特性がなければならない。レオメータを使用して、固形含有量50%、35%と20%の印刷材の粘度を測定する。せん断速度が1から200s-1の範囲内では、固形含有量50%、35%と20%の印刷材の最大粘度はそれぞれ、38.6Pa・s、10.25Pa・sと1.12 Pa・sである(図11)。プリントに用いる印刷材の粘度はせん断速度或いはせん断応力の増加と伴に減少し、それはずり流動化特性を備えていることを実証する。これは、ポリマーが低流速時に互いにもつれて、粘度が大きくなり、流速が大きくなると、せん断応力作用がポリマーチェーン構造を破壊するので、絡み合う現象が少なくなり、粘度が低下するからである。且つこの実験から分かるように、固形含有量を増加すると、粘度が増加するが、ずり流動化特性もそのまま備えており、故に固形含有量の増加は硬化能力を影響しないと実証することになる。この実施例では、光硬化3Dプリントに適する印刷材の粘度範囲は1.12~38.6Pa・sである。
Claims (7)
- 一種の光硬化3Dプリントアイテムを製造する方法であり、以下(a)、(b)、(c)、(d)のステップを含み、(a)印刷材製造、その中で前記印刷材は感熱性ヒドロゲルのモノマー分子、光硬化開始剤、架橋剤、溶媒とセラミック材料の混合を通して得るステップ、(b)光硬化3Dプリンタの使用では、前記印刷材を原料として3Dプリントプログラムを実行し、3Dプリントアイテムのグリーンコンパクトを得るステップ、(c)(b)でプリントアウトした3Dプリントアイテムのグリーンコンパクトを油でコーティングするステップ、および(d)(c)で得た油でコーティングした後の前記3Dプリントアイテムのグリーンコンパクトに対して加熱焼結を行い、3Dプリントアイテムを得るステップがあることを特徴とする光硬化3Dプリントアイテムの製造方法。
- 前記感熱性ヒドロゲルのモノマー分子は、N-イソプロピルアクリルアミド、N,N-ジメチルアクリルアミド、N-エチルメタクリルアミド、メチルビニルエーテル、2-エチルヘキシルビニルエーテル、N-ビニルカプロラクタム、ポリ(有機ホスファゼン)、N-イソプロピルアクリルアミド-メタクリル酸、1,6-ヘキサンジオールジアクリレート、トリメチロールプロパントリアクリレート、アクリル酸イソボルニル、2-ヒドロキシエチルアクリレート、2-ヒドロキシエチルメタクリレート、2-フェノキシエチルアクリレート、アクリル酸イソデシル、アクリル酸、ジフルオロベンゾフェノン、アクリルアミド、テトラ(エチレングリコール)ジアクリレート或いはその組み合わせを含むことを特徴とする請求項1に記載の光硬化3Dプリントアイテムの製造方法。
- 前記溶媒は水溶媒或いは有機溶媒を含むことを特徴とする請求項1に記載の光硬化3Dプリントアイテムの製造方法。
- 前記セラミック材料は、ヒドロキシアパタイト、Β-リン酸三カルシウム、高密度アルミナ、ジルコニア、生物活性ガラス、超硬セラミック材料、窒化物セラミック材料、ケイ酸アルミニウム、ホウ化セラミック材料、ケイ化物セラミック材料或いはその組み合わせを含むことを特徴とする請求項1に記載の光硬化3Dプリントアイテムの製造方法。
- 前記油はポリグリコール、シリコーンオイル、フッ素化オイル、リン酸塩、ポリエーテル、パラフィン、ドデシルアルコール、オリーブオイル、大豆油、炭化水素鉱油、液体パラフィン或いは合成炭化水素を含むことを特徴とする請求項1に記載の光硬化3Dプリントアイテムの製造方法。
- 前記印刷材の固形含有量範囲は10%~60%であることを特徴とする請求項1に記載の光硬化3Dプリントアイテムの製造方法。
- 前記印刷材の粘度範囲は0.01~45Pa・sであることを特徴とする請求項1に記載の光硬化3Dプリントアイテムの製造方法。
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KR20190093772A (ko) * | 2018-01-15 | 2019-08-12 | 한국전자통신연구원 | 골이식재 제조방법 및 제작된 골이식재 |
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JP2018524288A (ja) | 2015-05-28 | 2018-08-30 | スリーエム イノベイティブ プロパティズ カンパニー | 三次元物品の作製のための付加製造方法に用いるためのナノジルコニア粒子を含有するゾル |
WO2017092713A1 (zh) | 2015-12-04 | 2017-06-08 | 高雄医学大学 | 积层制造3d打印物品的方法 |
JP2021536381A (ja) | 2018-08-31 | 2021-12-27 | スリーエム イノベイティブ プロパティズ カンパニー | 非酸化物セラミック物品を製造するための積層造形方法、並びにエアロゲル、キセロゲル、及び多孔質セラミック物品 |
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US20220097257A1 (en) | 2022-03-31 |
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