Fabrication of polycarboxylate/graphene oxide nanosheet composites by copolymerization for reinforcing and toughening cement composites
Fabrication of polycarboxylate/graphene oxide nanosheet composites by copolymerization for reinforcing and toughening cement composites
复制标题
DOI：
10.1016/j.cemconcomp.2015.11.007
复制
发表时间：
2016-02-01
影响因子：
10.5
通讯作者：
Cui, Y. Y.
中科院分区：
文献类型：
--
作者：
Lv, S. H.;Deng, L. J.;Cui, Y. Y.
聚羧酸酯(PC)/氧化石墨烯纳米片(GON)复合材料是由氧化石墨烯纳米片(GONs)与PC单体甲基丙烯酸、烯丙基磺酸钠和甲基丙烯酸聚氧乙烯醚共聚而成。测试结果表明PC/GON共聚复合材料中的GON尺寸较小且分散均匀。在水泥浆体中使用PC/GON复合材料可以实现GONs的均匀分散，消除GONs对水泥浆体流动性的影响。复合材料中的GONs可以调节水泥水化产物，形成有序的微观结构，具有显着的补强增韧作用。同时，研究结果表明GONs对水泥复合材料的孔洞和裂缝具有自修复作用。研究结果对于GONs在提高水泥复合材料的强度/韧性和延长使用寿命方面的应用具有非常积极的意义。 (C) 2015 Elsevier Ltd. 保留所有权利。
Polycarboxylate (PC)/graphene oxide nanosheet (GON) composites are prepared by copolymerization of graphene oxide nanosheets (GONs) and PC's monomers of methacrylic acid, sodium allyl sulfonate and methacrylate polyoxyethylene ether. The test results indicate that GONs in the PC/GON copolymeric composites have smaller size and uniformly dispersed. Using of PC/GON composites in cement paste can achieve uniformly disperse GONs and eliminate the effects of GONs on the cement paste fluidity. The GONs from the composites can regulate the cement hydration products to form ordered microstructure and have significantly reinforcing and toughening effects. Meanwhile, the results research indicate that GONs have self-repairing effects for the holes and cracks for cement composites. The results have a very positive to application of GONs for improving the strength/toughness and extensing the service life of cement composites. (C) 2015 Elsevier Ltd. All rights reserved.