Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
In-situ generated silicon carbide whisker reinforced graphite material and preparation method thereof
The invention relates to the technical field of graphite composite materials, in particular to an in-situ generated silicon carbide whisker reinforced graphite material and a preparation method thereof. The in-situ generated silicon carbide whisker reinforced graphite material comprises the following raw materials in parts by weight: 100 parts of diamond micro powder, 6-60 parts of active silicon powder, 3-60 parts of active carbon black, 5-10 parts of a binder and 0.5-3 parts of a surfactant. The preparation method comprises the following steps: (1) preparing slurry: weighing the raw materials in parts by weight, and uniformly mixing to prepare the slurry; (2) drying, grinding and crushing the slurry, and finally sieving and granulating; (3) carrying out compression molding to obtain a solid block material; (4) generating silicon carbide whiskers in situ under a high-temperature condition; and (5) putting the block material treated in the step (4) into a mold, then putting the mold into a sintering furnace, and sintering under a high-temperature condition to obtain the in-situ generated silicon carbide whisker reinforced graphite material. According to the invention, the active carbon black is introduced as a second carbon source, and the micron-sized diamond micro-powder is adopted to replace the currently common nano-sized diamond, so that the production cost of the material is greatly reduced on the premise of not reducing the material performance, and the industrial application of the high-performance graphite material is promoted.
本发明涉及石墨复合材料技术领域，具体涉及一种原位生成碳化硅晶须增强石墨材料及其制备方法。所述原位生成碳化硅晶须增强石墨材料按重量份数包括以下原料：金刚石微粉100份、活性硅粉6‑60份、活性碳黑3‑60份、粘结剂5‑10份、表面活性剂0.5‑3份。制备方法如下：（1）浆料制备：按上述重量份数称原料，混合均匀，制得浆料；（2）将浆料烘干、研磨、破碎，最后过筛造粒；（3）模压成型，得到固体块材；（4）高温条件下，原位生成碳化硅晶须；（5）将步骤(4)处理的块体材料，放入模具内，然后装入烧结炉内，高温条件下进行烧结，得到原位生成碳化硅晶须增强石墨材料。本发明通过引入活性碳黑作为第二碳源，且采用微米级金刚石微粉替代目前常用的纳米级金刚石，在不降低材料性能的前提下，大大降低了材料生产成本，有利于推动高性能石墨材料的产业化应用。
In-situ generated silicon carbide whisker reinforced graphite material and preparation method thereof
The invention relates to the technical field of graphite composite materials, in particular to an in-situ generated silicon carbide whisker reinforced graphite material and a preparation method thereof. The in-situ generated silicon carbide whisker reinforced graphite material comprises the following raw materials in parts by weight: 100 parts of diamond micro powder, 6-60 parts of active silicon powder, 3-60 parts of active carbon black, 5-10 parts of a binder and 0.5-3 parts of a surfactant. The preparation method comprises the following steps: (1) preparing slurry: weighing the raw materials in parts by weight, and uniformly mixing to prepare the slurry; (2) drying, grinding and crushing the slurry, and finally sieving and granulating; (3) carrying out compression molding to obtain a solid block material; (4) generating silicon carbide whiskers in situ under a high-temperature condition; and (5) putting the block material treated in the step (4) into a mold, then putting the mold into a sintering furnace, and sintering under a high-temperature condition to obtain the in-situ generated silicon carbide whisker reinforced graphite material. According to the invention, the active carbon black is introduced as a second carbon source, and the micron-sized diamond micro-powder is adopted to replace the currently common nano-sized diamond, so that the production cost of the material is greatly reduced on the premise of not reducing the material performance, and the industrial application of the high-performance graphite material is promoted.
本发明涉及石墨复合材料技术领域，具体涉及一种原位生成碳化硅晶须增强石墨材料及其制备方法。所述原位生成碳化硅晶须增强石墨材料按重量份数包括以下原料：金刚石微粉100份、活性硅粉6‑60份、活性碳黑3‑60份、粘结剂5‑10份、表面活性剂0.5‑3份。制备方法如下：（1）浆料制备：按上述重量份数称原料，混合均匀，制得浆料；（2）将浆料烘干、研磨、破碎，最后过筛造粒；（3）模压成型，得到固体块材；（4）高温条件下，原位生成碳化硅晶须；（5）将步骤(4)处理的块体材料，放入模具内，然后装入烧结炉内，高温条件下进行烧结，得到原位生成碳化硅晶须增强石墨材料。本发明通过引入活性碳黑作为第二碳源，且采用微米级金刚石微粉替代目前常用的纳米级金刚石，在不降低材料性能的前提下，大大降低了材料生产成本，有利于推动高性能石墨材料的产业化应用。
In-situ generated silicon carbide whisker reinforced graphite material and preparation method thereof
一种原位生成碳化硅晶须增强石墨材料及其制备方法
LI QISONG (Autor:in) / LI AO (Autor:in) / MU YUNCHAO (Autor:in) / ZHANG QIAN (Autor:in) / HUANG QUAN (Autor:in) / CHENG XIAOZHE (Autor:in) / JIA SHAOPEI (Autor:in) / WANG ZHIXIN (Autor:in) / GUAN XIAOYAN (Autor:in)
06.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2021