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Deep impregnation method of isostatic pressing graphite
The invention discloses a deep impregnation method of isostatic pressing graphite, relates to the technical field of graphite materials, and aims to solve the problems that the isostatic pressing graphite is insufficient in impregnation depth and poor in impregnation uniformity, and an existing method is tedious, complex, high in energy consumption and difficult to apply in actual production. The method comprises the following steps: placing a to-be-impregnated isostatic pressing graphite roasted product in an impregnating tank, and preheating; vacuumizing the impregnating tank for the first time, then filling nitrogen to pressurize, and then vacuumizing for the second time; asphalt liquid is injected into the impregnation tank, the roasted product is soaked, and then nitrogen is introduced for primary pressurization and secondary pressurization for impregnation; heating is stopped, nitrogen is introduced while the asphalt liquid is discharged, the impregnated product is cooled under the condition that the pressure is higher than the impregnation pressure, the pressure is released after the impregnated product is cooled to the asphalt softening point or below, and cooling continues; according to the impregnation method, the impregnated product can achieve the deep and uniform impregnation effect, the porosity of the product is low, the weight gain rate is high, and the impregnation method is suitable for isostatic pressing graphite of various specifications and structures.
本发明公开了一种等静压石墨的深度浸渍方法，涉及石墨材料技术领域，为解决等静压石墨浸渍深度不够，浸渍均一性差，现有方法又繁琐复杂、能耗高，难以在实际生产中应用的问题；本发明包括将待浸渍的等静压石墨焙烧品置于浸渍罐中，进行预热；对浸渍罐一次抽真空，再充入氮气加压，随后二次抽真空；往浸渍罐内注入沥青液，浸泡焙烧品，再分别充入氮气一次加压和二次加压进行浸渍；关闭加热，在排出沥青液的同时充入氮气，加压至高于浸渍压力的条件下冷却浸渍品，冷却至沥青软化点以下后释放压力，继续冷却；本发明的浸渍方法可使得浸渍品达到深度、均匀的浸渍效果，产品气孔率低，增重率高，适用于各种规格和结构的等静压石墨。
Deep impregnation method of isostatic pressing graphite
The invention discloses a deep impregnation method of isostatic pressing graphite, relates to the technical field of graphite materials, and aims to solve the problems that the isostatic pressing graphite is insufficient in impregnation depth and poor in impregnation uniformity, and an existing method is tedious, complex, high in energy consumption and difficult to apply in actual production. The method comprises the following steps: placing a to-be-impregnated isostatic pressing graphite roasted product in an impregnating tank, and preheating; vacuumizing the impregnating tank for the first time, then filling nitrogen to pressurize, and then vacuumizing for the second time; asphalt liquid is injected into the impregnation tank, the roasted product is soaked, and then nitrogen is introduced for primary pressurization and secondary pressurization for impregnation; heating is stopped, nitrogen is introduced while the asphalt liquid is discharged, the impregnated product is cooled under the condition that the pressure is higher than the impregnation pressure, the pressure is released after the impregnated product is cooled to the asphalt softening point or below, and cooling continues; according to the impregnation method, the impregnated product can achieve the deep and uniform impregnation effect, the porosity of the product is low, the weight gain rate is high, and the impregnation method is suitable for isostatic pressing graphite of various specifications and structures.
本发明公开了一种等静压石墨的深度浸渍方法，涉及石墨材料技术领域，为解决等静压石墨浸渍深度不够，浸渍均一性差，现有方法又繁琐复杂、能耗高，难以在实际生产中应用的问题；本发明包括将待浸渍的等静压石墨焙烧品置于浸渍罐中，进行预热；对浸渍罐一次抽真空，再充入氮气加压，随后二次抽真空；往浸渍罐内注入沥青液，浸泡焙烧品，再分别充入氮气一次加压和二次加压进行浸渍；关闭加热，在排出沥青液的同时充入氮气，加压至高于浸渍压力的条件下冷却浸渍品，冷却至沥青软化点以下后释放压力，继续冷却；本发明的浸渍方法可使得浸渍品达到深度、均匀的浸渍效果，产品气孔率低，增重率高，适用于各种规格和结构的等静压石墨。
Deep impregnation method of isostatic pressing graphite
一种等静压石墨的深度浸渍方法
LI TAO (author) / WANG WEI (author) / PEI XIAODONG (author) / SHEN BAOJIN (author)
2022-06-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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