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Block copolymer grafted graphene oxide as well as preparation method and application thereof
The invention discloses segmented copolymer grafted graphene oxide and a preparation method and application thereof, and relates to the technical field of cement-based material preparation.The method comprises the following steps that graphene oxide is dispersed in a solvent, an RAFT reagent is added, and RAFT reagent modified graphene oxide is prepared; adding a polyether copolymer to prepare copolymer grafted graphene oxide; and adding poly (propanesulfonic acid) to prepare the segmented copolymer grafted graphene oxide. The graphene oxide is chemically modified, the block copolymer is grafted through RAFT polymerization, the polyether-polyacrylic acid block copolymer is synthesized, the polyether-polyacrylic acid block copolymer has a good promotion effect in the cement hydration process, the workability of a cement-based material can be improved, the mechanical property of the cement-based material can be enhanced, and good economic benefits can be obtained. The invention solves the problem that the performance of the cement-based material improved by physical modification and chemical modification of graphene oxide in the prior art is not ideal.
本发明公开了一种嵌段共聚物接枝氧化石墨烯及其制备方法和应用，涉及水泥基材料制备技术领域，该方法包括以下步骤：将氧化石墨烯分散在溶剂中，加入RAFT试剂，制得RAFT试剂改性氧化石墨烯；加入聚醚共聚物，制得共聚物接枝氧化石墨烯；加入聚丙磺酸，制得嵌段共聚物接枝氧化石墨烯。本发明通过化学改性氧化石墨烯，采用RAFT聚合接枝嵌段共聚物，合成聚醚‑聚丙烯酸嵌段共聚物，其在水泥水化过程中具有良好促进作用，能够提高水泥基材料的工作性，加强水泥基材料的力学性能，可获得良好的经济效益。本发明解决了现有技术中的对氧化石墨烯进行物理改性和化学改性提升水泥基材料性能不理想的问题。
Block copolymer grafted graphene oxide as well as preparation method and application thereof
The invention discloses segmented copolymer grafted graphene oxide and a preparation method and application thereof, and relates to the technical field of cement-based material preparation.The method comprises the following steps that graphene oxide is dispersed in a solvent, an RAFT reagent is added, and RAFT reagent modified graphene oxide is prepared; adding a polyether copolymer to prepare copolymer grafted graphene oxide; and adding poly (propanesulfonic acid) to prepare the segmented copolymer grafted graphene oxide. The graphene oxide is chemically modified, the block copolymer is grafted through RAFT polymerization, the polyether-polyacrylic acid block copolymer is synthesized, the polyether-polyacrylic acid block copolymer has a good promotion effect in the cement hydration process, the workability of a cement-based material can be improved, the mechanical property of the cement-based material can be enhanced, and good economic benefits can be obtained. The invention solves the problem that the performance of the cement-based material improved by physical modification and chemical modification of graphene oxide in the prior art is not ideal.
本发明公开了一种嵌段共聚物接枝氧化石墨烯及其制备方法和应用，涉及水泥基材料制备技术领域，该方法包括以下步骤：将氧化石墨烯分散在溶剂中，加入RAFT试剂，制得RAFT试剂改性氧化石墨烯；加入聚醚共聚物，制得共聚物接枝氧化石墨烯；加入聚丙磺酸，制得嵌段共聚物接枝氧化石墨烯。本发明通过化学改性氧化石墨烯，采用RAFT聚合接枝嵌段共聚物，合成聚醚‑聚丙烯酸嵌段共聚物，其在水泥水化过程中具有良好促进作用，能够提高水泥基材料的工作性，加强水泥基材料的力学性能，可获得良好的经济效益。本发明解决了现有技术中的对氧化石墨烯进行物理改性和化学改性提升水泥基材料性能不理想的问题。
Block copolymer grafted graphene oxide as well as preparation method and application thereof
一种嵌段共聚物接枝氧化石墨烯及其制备方法和应用
WU SHISHAN (author) / AN NANNAN (author) / CHEN YI (author)
2025-01-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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