A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide an organic binder which can be mixed with a powder of metals or ceramics homogeneously, and not causing cells or cracks in a sintered body after calcination.SOLUTION: An organic binder is used in molding a powder for sintering and includes a mother component involving at least one resin having a melting enthalpy ΔH of 10 kJ/mol or under and a melting entropy ΔS of 15 J/(K mol) or under and at least one additive component added as a lubricant, a plasticizer, a dispersant, or a surface modification agent, wherein the additive component is composed of a chemical species having a difference of SP value from a SP value of a resin constituting the mother component of ±1.30[cal/cm3]1/2 and a distribution coefficient of 2.3 or higher, and a distance (D value) which shows an affinity calculated from the SP value and a distribution coefficient is 20 or under.SELECTED DRAWING: Figure 1
【課題】金属やセラミックの粉末との均一な混合を可能として、焼成した焼結体に気泡やクラックを生じさせない有機バインダを提供する。【解決手段】本発明の有機バインダは、焼結用粉末の成形に用いられるものであって、融解エンタルピーΔＨが１０kJ/mol以下であって、かつ融解エントロピーΔＳが１５J/（Ｋ・mol）以下となる１種以上の樹脂を有する母成分と、滑剤、可塑剤、分散剤、または表面改質剤として添加される少なくとも１種以上の添加剤成分と、を有し、添加剤成分は、母成分を構成する樹脂のＳＰ値に対して、ＳＰ値の差が±１．３０［cal/cm3］1/2となると共に分配係数が２．３以上となる化学種から構成され、かつ、ＳＰ値及び分配係数から算出される親和性を表す距離（Ｄ値）が２０以下となる関係を満足する。【選択図】図１
To provide an organic binder which can be mixed with a powder of metals or ceramics homogeneously, and not causing cells or cracks in a sintered body after calcination.SOLUTION: An organic binder is used in molding a powder for sintering and includes a mother component involving at least one resin having a melting enthalpy ΔH of 10 kJ/mol or under and a melting entropy ΔS of 15 J/(K mol) or under and at least one additive component added as a lubricant, a plasticizer, a dispersant, or a surface modification agent, wherein the additive component is composed of a chemical species having a difference of SP value from a SP value of a resin constituting the mother component of ±1.30[cal/cm3]1/2 and a distribution coefficient of 2.3 or higher, and a distance (D value) which shows an affinity calculated from the SP value and a distribution coefficient is 20 or under.SELECTED DRAWING: Figure 1
【課題】金属やセラミックの粉末との均一な混合を可能として、焼成した焼結体に気泡やクラックを生じさせない有機バインダを提供する。【解決手段】本発明の有機バインダは、焼結用粉末の成形に用いられるものであって、融解エンタルピーΔＨが１０kJ/mol以下であって、かつ融解エントロピーΔＳが１５J/（Ｋ・mol）以下となる１種以上の樹脂を有する母成分と、滑剤、可塑剤、分散剤、または表面改質剤として添加される少なくとも１種以上の添加剤成分と、を有し、添加剤成分は、母成分を構成する樹脂のＳＰ値に対して、ＳＰ値の差が±１．３０［cal/cm3］1/2となると共に分配係数が２．３以上となる化学種から構成され、かつ、ＳＰ値及び分配係数から算出される親和性を表す距離（Ｄ値）が２０以下となる関係を満足する。【選択図】図１
ORGANIC BINDER
有機バインダ
YASUI AKIHITO (author)
2021-10-14
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
B22F
Verarbeiten von Metallpulver
,
WORKING METALLIC POWDER
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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