JP6981964B2 - 熱可塑性シリコーン組成物を用いた3dプリンティングの方法 - Google Patents
熱可塑性シリコーン組成物を用いた3dプリンティングの方法 Download PDFInfo
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- JP6981964B2 JP6981964B2 JP2018509563A JP2018509563A JP6981964B2 JP 6981964 B2 JP6981964 B2 JP 6981964B2 JP 2018509563 A JP2018509563 A JP 2018509563A JP 2018509563 A JP2018509563 A JP 2018509563A JP 6981964 B2 JP6981964 B2 JP 6981964B2
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Description
この方法は、I)第1の熱可塑性シリコーン組成物を3Dプリンターによってプリントし、少なくとも部分的に固化した層を形成する工程を含む。下記に詳述するとおり、各種の3Dプリンター及び/又は3Dプリンティングの方法論(すなわち、「3Dプリンティングプロセス」)を用いることができる。更に以下に記載のとおり、各種の熱可塑性シリコーン組成物を本発明の方法に用いることができる。
第1及び第2の熱可塑性シリコーン組成物は、互いに同一でも異なっていてもよく、工程II)を反復する際、独立して選択された熱可塑性シリコーン組成物を用いてもよい。簡略化のため、第1及び第2の熱可塑性シリコーン組成物を、工程II)を反復する際に任意に用いられる任意の他の熱可塑性シリコーン組成物と共に、以下でまとめて単に「熱可塑性シリコーン組成物」、「熱可塑性シリコーン組成物のそれぞれ」、又は「熱可塑性シリコーン組成物のうちの少なくとも1つ」と呼ぶ。このような用語又は表現の言及により、本方法で用いられる熱可塑性シリコーン組成物のいずれかに言及することができ、まとめて言及されてはいるものの、熱可塑性シリコーン組成物のそれぞれを独立して選択することができる。
(R1R2 2SiO1/2)w(R2 2SiO2/2)x(R2SiO3/2)y(SiO4/2)z (I)
[式中、各R1は、独立して選択されるヒドロカルビル基であり、置換又は非置換であってもよく、各R2は、R1及びヒドロキシルから独立して選択され、かつw、x、y、及びzは、w+x+y+z=1となるモル分率である]を有する。当該技術分野において理解されるとおり、直鎖オルガノポリシロキサンでは、下付き文字y及びzは一般に0であり、樹脂では、下付き文字y及び/又はz>0。w、x、y、及びzに関し、様々な代替実施形態について下記に記載する。これらの実施形態において、下付き文字wは、0〜0.9999、あるいは0〜0.999、あるいは0〜0.99、あるいは0〜0.9、あるいは0.9〜0.999、あるいは0.9〜0.999、あるいは0.8〜0.99、あるいは0.6〜0.99の値であり得る。下付き文字xは、典型的には0〜0.9、あるいは0〜0.45、あるいは0〜0.25の値である。下付き文字yは、典型的には0〜0.99、あるいは0.25〜0.8、あるいは0.5〜0.8の値である。下付き文字zは、典型的には0〜0.99、あるいは0〜0.85、あるいは0.85〜0.95、あるいは0.6〜0.85、あるいは0.4〜0.65、あるいは0.2〜0.5、あるいは0.1〜0.45、あるいは0〜0.25、あるいは0〜0.15の値である。
(R1R3 2SiO1/2)w’(R3 2SiO2/2)x’(R3SiO3/2)y’(SiO4/2)z’ (II)
[式中、各R1は上記に定義されており、各R3はR1及びアルケニル基から独立して選択されるが、ただし、R3のうちの少なくとも2つはアルケニル基であり、w’、x’、y’、及びz’は、w’+x’+y’+z’=1となるモル分率である]を有する。当該技術分野において理解されるとおり、直鎖オルガノポリシロキサンでは、下付き文字y’及びz’は一般に0であるのに対し、樹脂では、下付き文字y’及び/又はz’>0。w’、x’、y’、及びz’に関し、様々な代替実施形態について下記に記載する。これらの実施形態において、下付き文字w’は、0〜0.9999、あるいは0〜0.999、あるいは0〜0.99、あるいは0〜0.9、あるいは0.9〜0.999、あるいは0.9〜0.999、あるいは0.8〜0.99、あるいは0.6〜0.99の値であり得る。下付き文字x’は、典型的には0〜0.9、あるいは0〜0.45、あるいは0〜0.25の値である。下付き文字y’は、典型的には0〜0.99、あるいは0.25〜0.8、あるいは0.5〜0.8の値である。下付き文字z’は、典型的には0〜0.99、あるいは0〜0.85、あるいは0.85〜0.95、あるいは0.6〜0.85、あるいは0.4〜0.65、あるいは0.2〜0.5、あるいは0.1〜0.45、あるいは0〜0.25、あるいは0〜0.15の値である。
Claims (11)
- 3次元(3D)物品を形成する方法であって、前記方法は、
I)第1の熱可塑性シリコーン組成物を3Dプリンターによってプリントし、少なくとも部分的に固化した層を形成する工程と、
II)第2の熱可塑性シリコーン組成物を、前記少なくとも部分的に固化した層の上に、前記3Dプリンターによってプリントし、後続の少なくとも部分的に固化した層を形成する工程と、を含み、
前記第1及び第2の熱可塑性シリコーン組成物は、互いに同一であるか又は異なっており、
前記第1及び/又は第2の熱可塑性シリコーン組成物が、熱可塑性シリコーンポリマー組成物を含み、前記熱可塑性シリコーンポリマー組成物は、ポリ(ジメチルシロキサン−co−ジフェニルシロキサン)、ポリシルフェニレン、ポリ(シルフェニレン−ジメチルシロキサン)、ポリ(フェニルメチルシロキサン−co−ジフェニルシロキサン)、シリコーン−ポリウレタンコポリマー、シリコーン−ポリアミドコポリマー、シリコーン−ポリエーテルイミドコポリマー、シリコーン−ポリスルホンコポリマー、シリコーン−ポリエステルコポリマー、シリコーン−ポリエーテルケトンコポリマー、シリコーン−ポリアクリレートコポリマー、シリコーン−ポリビニルコポリマー、シリコーン−ポリ尿素コポリマー、シリコーン−ポリフェニレンコポリマー、シリコーン−ポリスルフィドコポリマー、シリコーン−ポリエーテルコポリマー、シリコーン−ポリホスファゼンコポリマー、シリコーン−ポリ炭水化物コポリマー又は糖シロキサン、シリコーン−ポリオレフィンコポリマー又はシリコーンワックス、シリコーン−ポリペプチドコポリマーから選択されるシリコーンコポリマーを含むか、
前記第1及び/又は第2の熱可塑性シリコーン組成物が、シリコーンホットメルト組成物を含むか、又は
前記第1及び/又は第2の熱可塑性シリコーン組成物が、動的加硫によって形成された熱可塑性シリコーン加硫物組成物を含む、方法。 - 前記第1及び第2の熱可塑性シリコーン組成物が同一である、請求項1に記載の方法。
- 前記第1及び/又は第2の熱可塑性シリコーン組成物が、前記シリコーンホットメルト組成物を含み、前記シリコーンホットメルト組成物は非硬化性であり、前記シリコーンホットメルト組成物は、i)シリコーン流体及び/若しくはオルガノポリシロキサン、ii)シリコーン樹脂及び/若しくはオルガノポリシロキサン、又はiii)i)及びii)の両方を含む、請求項1に記載の方法。
- 前記第1及び/又は第2の熱可塑性シリコーン組成物が、前記シリコーンホットメルト組成物を含み、前記シリコーンホットメルト組成物は硬化性であり、かつ前記シリコーンホットメルト組成物は湿気硬化性組成物を含む、請求項1に記載の方法。
- 前記第1及び/又は第2の熱可塑性シリコーン組成物が、前記熱可塑性シリコーン加硫物組成物を含み、前記熱可塑性シリコーン加硫物組成物は、(A)熱可塑性ポリマーと、(B)前記熱可塑性ポリマー(A)中に分散されたシリコーンエラストマーとを含む、請求項1に記載の方法。
- i)前記熱可塑性ポリマー(A)が、有機物であり、ポリウレタン、ポリ尿素、ポリアミド、ポリイミド、ポリケトン、ポリエステル、ポリエーテル、ポリオキシド、ポリアミン、ポリシリレン、ポリエーテルイミド、ポリエーテルケトン、ポリアクリレート、ポリスルフィド、ポリチオフェン、ポリホスファゼン、ポリフェニレン、ポリオキサゾール、ポリチアゾール、ポリイミダゾール、ポリベンゾオキサジン、ポリベンゾチアゾール、ポリカルボラン、ポリスルホン、ポリ無水物、ポリスルホンアミド、ポリ炭水化物、ポリカーボネート、ポリアセタール、ポリオレフィン、ポリビニル、ポリビニリデン、ポリ塩化ビニル、ポリ芳香族、ポリジエン、ポリダイン、ポリペプチド、ポリアミド−ポリエーテル、スチレン系ブロックコポリマー、アイオノマー、ポリ(エチレン−ビニルアセテート)、アクリロニトリルブタジエンスチレン、及びこれらのコポリマーから選択されるか、
ii)前記シリコーンエラストマー(B)が、(B1)1分子当たり平均で少なくとも2個のケイ素結合アルケニル基を有するオルガノポリシロキサンと、(B2)1分子当たり平均で少なくとも2個のケイ素結合水素原子を有する有機ケイ素化合物と、(C)ヒドロシリル化触媒との加硫生成物を含み、前記熱可塑性シリコーン加硫物組成物は再加工可能であるか、又は
iii)i)及びii)の両方である、請求項5に記載の方法。 - i)前記熱可塑性ポリマー(A)がポリウレタンであるか、ii)前記オルガノポリシロキサン(B1)が実質的に直鎖のジオルガノポリシロキサンを含むか、又はiii)i)及びii)の両方である、請求項6に記載の方法。
- 前記第1及び第2の熱可塑性シリコーン組成物が互いに異なっている、請求項1に記載の方法。
- i)前記第1及び第2の熱可塑性シリコーン組成物が、ある時間にわたる周囲条件への暴露に際して固化するか、ii)I)の間に前記第1の熱可塑性シリコーン組成物に熱が加えられるか、又はiii)i)及びii)の両方である、請求項1〜8のいずれか一項に記載の方法。
- 前記3Dプリンターが、熱溶解フィラメント製造プリンター、選択的レーザー焼結プリンター、選択的レーザー溶融プリンター、ステレオリソグラフィプリンター、粉末層(バインダージェット)プリンター、マテリアルジェットプリンター、直接金属レーザー焼結プリンター、電子ビーム溶融プリンター、積層対象物製造積層プリンター、指向性エネルギー積層プリンター、レーザー粉末形成プリンター、ポリジェットプリンター、インクジェットプリンター、マテリアルジェッティングプリンター、及びシリンジ押出成形プリンターから選択されるか、あるいは、前記方法は熱溶解フィラメント製造を含む、請求項1〜9のいずれか一項に記載の方法。
- I)で形成された前記少なくとも部分的に固化した層が、周囲条件への暴露に際してその形状を維持する、請求項1〜10のいずれか一項に記載の方法。
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