A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of graphite molds, and particularly discloses a high-strength and high-density graphite mold and a preparation method thereof. The preparation method comprises the following steps: (1) providing raw materials and mixing to obtain powder; (2) selective laser sintering molding; (3) hot-pressing and curing; (4) carbonizing; (5) dipping in a silica gel solution; and (6) sintering to obtain a high-strength and high-density graphite mold finished product, wherein the raw materials comprise the following components in percentage by weight: 32-47% of crystalline flake graphite, 23-32% of epoxy modified phenolic resin powder, 4-8% of pitch coke, 8-16% of polyacrylonitrile-based carbon fiber and 9-15% of modified asphalt powder. By implementing the method, the graphite mold with high density, high compressive strength and heat conductivity having transverse and longitudinal anisotropy can be obtained. The preparation method is short in technological process, low in energy consumption, small in pollution and high in raw material utilization efficiency.
本发明涉及石墨模具技术领域，具体公开了一种高强度高密度石墨模具及其制备方法，其包括以下步骤：（1）提供原料，混合得到粉体；（2）选择性激光烧结成型；（3）热压固化；（4）碳化；（5）在硅胶溶液中浸渍；（6）烧结得到高强度高密度石墨模具成品；其中，原料按照重量百分比计包括：鳞片石墨32~47%，环氧改性酚醛树脂粉23~32%，沥青焦4~8%，聚丙烯腈基碳纤维8~16%，改性沥青粉9~15%。实施本发明，可得到密度高，抗压强度高，且导热性具有横向和纵向异性的石墨模具。且本发明的制备方法工艺流程短，能源消耗低，污染小，原料利用效率高。
The invention relates to the technical field of graphite molds, and particularly discloses a high-strength and high-density graphite mold and a preparation method thereof. The preparation method comprises the following steps: (1) providing raw materials and mixing to obtain powder; (2) selective laser sintering molding; (3) hot-pressing and curing; (4) carbonizing; (5) dipping in a silica gel solution; and (6) sintering to obtain a high-strength and high-density graphite mold finished product, wherein the raw materials comprise the following components in percentage by weight: 32-47% of crystalline flake graphite, 23-32% of epoxy modified phenolic resin powder, 4-8% of pitch coke, 8-16% of polyacrylonitrile-based carbon fiber and 9-15% of modified asphalt powder. By implementing the method, the graphite mold with high density, high compressive strength and heat conductivity having transverse and longitudinal anisotropy can be obtained. The preparation method is short in technological process, low in energy consumption, small in pollution and high in raw material utilization efficiency.
本发明涉及石墨模具技术领域，具体公开了一种高强度高密度石墨模具及其制备方法，其包括以下步骤：（1）提供原料，混合得到粉体；（2）选择性激光烧结成型；（3）热压固化；（4）碳化；（5）在硅胶溶液中浸渍；（6）烧结得到高强度高密度石墨模具成品；其中，原料按照重量百分比计包括：鳞片石墨32~47%，环氧改性酚醛树脂粉23~32%，沥青焦4~8%，聚丙烯腈基碳纤维8~16%，改性沥青粉9~15%。实施本发明，可得到密度高，抗压强度高，且导热性具有横向和纵向异性的石墨模具。且本发明的制备方法工艺流程短，能源消耗低，污染小，原料利用效率高。
High-strength and high-density graphite mold and preparation method thereof
高强度高密度石墨模具及其制备方法
2021-12-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
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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