A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of special fine-particle graphite material
The invention relates to the technical field of graphite materials, in particular to a preparation method of a special fine-particle graphite material. According to the preparation method, needle petroleum coke is taken as an aggregate; an adopted powder is graphene, pitch coke, carbon black and carbon fibers; an adopted binder is modified medium-temperature coal pitch; an adopted impregnant is impregnation asphalt, and the fine-particle graphite material is prepared through mixing kneading, profiling, roasting, impregnation, secondary roasting and graphitization; raw material selection is reasonable, and the preparation process is scientific; the structure is uniform and fine and the volume density is high; graphite physical and chemical indexes are excellent. The volume density of the prepared special fine-particle graphite is larger than or equal to 2.0 g/cm < 3 >, the resistivity is smaller than or equal to 6.0 omega m, the breaking strength is larger than or equal to 32 Mpa,the compressive strength is larger than or equal to 65 Mpa, the porosity is smaller than or equal to 10%, the ash content is smaller than or equal to 0.2%, and the thermal expansion coefficient is smaller than or equal to 2 * 10 <-6 >/DEG C.
本发明涉及石墨材料技术领域，更具体而言，涉及一种特种细颗粒石墨材料制备方法，以骨料为针状石油焦；粉料为石墨烯、沥青焦、炭黑、碳纤维；粘结剂为改质中温煤沥青；浸渍剂为浸渍沥青，通过混捏、压型、焙烧、浸渍、二次焙烧、石墨化制得细颗粒石墨材料；原料选择合理，制备工艺科学；结构均匀细腻，体积密度高；石墨理化理指标优良。本发明所制备的特种细颗粒石墨的体积密度≥2.0g/cm，电阻率≤6.0μΩm，抗折强度≥32Mpa，抗压强度≥65Mpa，气孔率≤10%，灰分≤0.2%，热膨胀系数≤2*10/℃。
Preparation method of special fine-particle graphite material
The invention relates to the technical field of graphite materials, in particular to a preparation method of a special fine-particle graphite material. According to the preparation method, needle petroleum coke is taken as an aggregate; an adopted powder is graphene, pitch coke, carbon black and carbon fibers; an adopted binder is modified medium-temperature coal pitch; an adopted impregnant is impregnation asphalt, and the fine-particle graphite material is prepared through mixing kneading, profiling, roasting, impregnation, secondary roasting and graphitization; raw material selection is reasonable, and the preparation process is scientific; the structure is uniform and fine and the volume density is high; graphite physical and chemical indexes are excellent. The volume density of the prepared special fine-particle graphite is larger than or equal to 2.0 g/cm < 3 >, the resistivity is smaller than or equal to 6.0 omega m, the breaking strength is larger than or equal to 32 Mpa,the compressive strength is larger than or equal to 65 Mpa, the porosity is smaller than or equal to 10%, the ash content is smaller than or equal to 0.2%, and the thermal expansion coefficient is smaller than or equal to 2 * 10 <-6 >/DEG C.
本发明涉及石墨材料技术领域，更具体而言，涉及一种特种细颗粒石墨材料制备方法，以骨料为针状石油焦；粉料为石墨烯、沥青焦、炭黑、碳纤维；粘结剂为改质中温煤沥青；浸渍剂为浸渍沥青，通过混捏、压型、焙烧、浸渍、二次焙烧、石墨化制得细颗粒石墨材料；原料选择合理，制备工艺科学；结构均匀细腻，体积密度高；石墨理化理指标优良。本发明所制备的特种细颗粒石墨的体积密度≥2.0g/cm，电阻率≤6.0μΩm，抗折强度≥32Mpa，抗压强度≥65Mpa，气孔率≤10%，灰分≤0.2%，热膨胀系数≤2*10/℃。
Preparation method of special fine-particle graphite material
一种特种细颗粒石墨材料制备方法
WEI JIAN (author) / ZHANG JINJUN (author) / MIN JIE (author) / ZHANG PEILIN (author) / PANG ZHONGHAI (author) / WU JIANJUN (author) / LIU WEIKAI (author) / JI YONGLIANG (author) / LEI TAO (author) / HUO YOU (author)
2020-05-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of high-density fine-structure graphite material
| European Patent Office | 2022
Special cementing material for fine-particle-scale gangue paste and preparation method
| European Patent Office | 2015
Preparation method of graphite material and graphite material
| European Patent Office | 2023