A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides crystalline graphene, a preparation method thereof and modified asphalt, and the preparation method comprises the following steps: (1) placing high-activity Ca (OH) 2 powder in a reaction furnace, heating to a preset temperature in an inert protective atmosphere, and keeping the temperature; wherein the content of Ca (OH) 2 in the high-activity Ca (OH) 2 powder is not less than 90% by mass, the content of Mg (OH) 2 is 0.1-5% by mass, and the balance is impurities; (2) introducing a carbon source into the reaction furnace, and carrying out chemical vapor deposition reaction to obtain a solid-phase product; (3) carrying out acid pickling on the solid-phase product to obtain a crystalline graphene blank; and (4) placing the crystalline graphene blank in a furnace containing hydrogen or carbon dioxide atmosphere, and performing high-temperature etching to obtain the crystalline graphene. The crystalline graphene can be highly matched with an asphalt mixture, and the high and low temperature performance of asphalt is improved.
本发明提供一种晶形石墨烯及其制备方法和改性沥青，包括如下步骤：(1)将高活性Ca(OH)2粉体置于反应炉中，在惰性保护气氛下升温到预设温度并保持该温度；按照质量百分比计，高活性Ca(OH)2粉体中Ca(OH)2的含量不小于90％、Mg(OH)2的在0.1％～5％之间，其余为杂质；(2)向反应炉内通入碳源，进行化学气相沉积反应，得到固相产物；(3)将固相产物进行酸洗，得到晶形石墨烯毛料；(4)将晶形石墨烯毛料置于含有氢气或二氧化碳气氛的炉内，高温刻蚀，得到晶形石墨烯。所述晶形石墨烯能与沥青混合物高度适配，提高沥青的高低温性能。
The invention provides crystalline graphene, a preparation method thereof and modified asphalt, and the preparation method comprises the following steps: (1) placing high-activity Ca (OH) 2 powder in a reaction furnace, heating to a preset temperature in an inert protective atmosphere, and keeping the temperature; wherein the content of Ca (OH) 2 in the high-activity Ca (OH) 2 powder is not less than 90% by mass, the content of Mg (OH) 2 is 0.1-5% by mass, and the balance is impurities; (2) introducing a carbon source into the reaction furnace, and carrying out chemical vapor deposition reaction to obtain a solid-phase product; (3) carrying out acid pickling on the solid-phase product to obtain a crystalline graphene blank; and (4) placing the crystalline graphene blank in a furnace containing hydrogen or carbon dioxide atmosphere, and performing high-temperature etching to obtain the crystalline graphene. The crystalline graphene can be highly matched with an asphalt mixture, and the high and low temperature performance of asphalt is improved.
本发明提供一种晶形石墨烯及其制备方法和改性沥青，包括如下步骤：(1)将高活性Ca(OH)2粉体置于反应炉中，在惰性保护气氛下升温到预设温度并保持该温度；按照质量百分比计，高活性Ca(OH)2粉体中Ca(OH)2的含量不小于90％、Mg(OH)2的在0.1％～5％之间，其余为杂质；(2)向反应炉内通入碳源，进行化学气相沉积反应，得到固相产物；(3)将固相产物进行酸洗，得到晶形石墨烯毛料；(4)将晶形石墨烯毛料置于含有氢气或二氧化碳气氛的炉内，高温刻蚀，得到晶形石墨烯。所述晶形石墨烯能与沥青混合物高度适配，提高沥青的高低温性能。
Crystalline graphene as well as preparation method and application thereof
一种晶形石墨烯及其制备方法和应用
CUI YUN (author)
2021-08-06
Patent
Electronic Resource
Chinese
IPC:
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C04B
Kalk
,
LIME
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
/
C09D
Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke
,
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS
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