Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the technical field of stirrer coating layers, and discloses a preparation method of a boron nitride film of a graphite stirrer, wherein the preparation method comprises the following steps: uniformly mixing borax and ammonium chloride, and adding the mixture into an organic solvent to obtain a borax ammonium chloride solution; adding an acrylamide monomer, a cross-linking agent and an initiator, and stirring to obtain sol of which the dispersion phase is borax and ammonium chloride and the dispersion medium is cross-linked polyacrylamide; coating the sol on the surface of a stirrer, and then drying; placing the stirrer in a reaction furnace, and decomposing the polyacrylamide into gas through heating; raising the temperature in the reaction furnace, introducing nitrogen to completely displace gas in the displacement reaction furnace, stopping introducing the nitrogen, introducing ammonia gas, keeping the temperature unchanged, and enabling the borax, the ammonium chloride and the ammonia gas to react; and after the reaction is finished, stopping introducing the ammonia gas, introducing nitrogen into the reaction furnace, stopping introducing the nitrogen when the temperature of the reaction furnace is reduced to room temperature, and thus forming the coating film of the stirrer. The production process is relatively simple and easy to control.
本发明涉及搅拌器涂层技术领域，公开了一种石墨搅拌器的氮化硼膜制备方法，其包括以下步骤：将硼砂和氯化铵均匀混合后加入有机溶剂中，获得硼砂氯化铵溶液；加入丙烯酰胺单体、交联剂和引发剂，搅拌后得到分散相为硼砂和氯化铵、分散介质为交联聚丙烯酰胺的溶胶；将溶胶涂抹在搅拌器表面，再进行干燥；将搅拌器置于反应炉内，通过加热将聚丙烯酰胺分解成气体；提升反应炉内温度，通入氮气将置换反应炉内的气体完全置换出后，停止通入氮气，通入氨气，保持温度不变，让硼砂、氯化铵和氨气反应；反应结束后停止通入氨气，向反应炉内通入氮气，等到反应炉温度降至室温，停止通入氮气，即形成搅拌器的镀膜，生产工艺相对简单易控制。
The invention relates to the technical field of stirrer coating layers, and discloses a preparation method of a boron nitride film of a graphite stirrer, wherein the preparation method comprises the following steps: uniformly mixing borax and ammonium chloride, and adding the mixture into an organic solvent to obtain a borax ammonium chloride solution; adding an acrylamide monomer, a cross-linking agent and an initiator, and stirring to obtain sol of which the dispersion phase is borax and ammonium chloride and the dispersion medium is cross-linked polyacrylamide; coating the sol on the surface of a stirrer, and then drying; placing the stirrer in a reaction furnace, and decomposing the polyacrylamide into gas through heating; raising the temperature in the reaction furnace, introducing nitrogen to completely displace gas in the displacement reaction furnace, stopping introducing the nitrogen, introducing ammonia gas, keeping the temperature unchanged, and enabling the borax, the ammonium chloride and the ammonia gas to react; and after the reaction is finished, stopping introducing the ammonia gas, introducing nitrogen into the reaction furnace, stopping introducing the nitrogen when the temperature of the reaction furnace is reduced to room temperature, and thus forming the coating film of the stirrer. The production process is relatively simple and easy to control.
本发明涉及搅拌器涂层技术领域，公开了一种石墨搅拌器的氮化硼膜制备方法，其包括以下步骤：将硼砂和氯化铵均匀混合后加入有机溶剂中，获得硼砂氯化铵溶液；加入丙烯酰胺单体、交联剂和引发剂，搅拌后得到分散相为硼砂和氯化铵、分散介质为交联聚丙烯酰胺的溶胶；将溶胶涂抹在搅拌器表面，再进行干燥；将搅拌器置于反应炉内，通过加热将聚丙烯酰胺分解成气体；提升反应炉内温度，通入氮气将置换反应炉内的气体完全置换出后，停止通入氮气，通入氨气，保持温度不变，让硼砂、氯化铵和氨气反应；反应结束后停止通入氨气，向反应炉内通入氮气，等到反应炉温度降至室温，停止通入氮气，即形成搅拌器的镀膜，生产工艺相对简单易控制。
Preparation method of boron nitride film of graphite stirrer
一种石墨搅拌器的氮化硼膜制备方法
15.02.2022
Patent
Elektronische Ressource
Chinesisch
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