Qingdao University of Technology

Jianlin Luo

Jigang Zhang

Zuquan Jin

Song Gao

Zhiqing Li

Fei Teng

Xueqing Zhu

Yibo Gao

Huarong Nie

Min Zhu

Xiaoyang Zhou

Qiuyi Li

A method for preparing a static/dynamic three-dimensional (3D) microcrack propagation sensor, a sensor and equipment, belongs to the field of sensor technology. The preparation method includes: preparing a piezoresistive/piezoelectric sensing functional component dispersed material, and then coating the dispersed material to the surface of a fiber cloth substrate to obtain a piezoresistive/piezoelectric sensing fiber cloth; performing a pre-stretching treatment on the piezoresistive/piezoelectric sensing fiber cloth to obtain a piezoresistive/piezoelectric sensing 3D microcrack fiber cloth; ablating the piezoresistive/piezoelectric sensing 3D microcrack fiber cloth by microwave to remove the fiber cloth substrate, then obtaining a piezoresistive/piezoelectric sensing 3D microcrack functional skeleton; coating a conductive layer on both surfaces of the piezoresistive/piezoelectric sensing 3D microcrack functional skeleton, thereby forming an electrode; polarizing the piezoresistive/piezoelectric sensing 3D microcrack functional skeleton with the formed electrodes on the surfaces; and, encapsulating the piezoresistive/piezoelectric sensing 3D microcrack functional skeleton to obtain a static/dynamic 3D microcrack propagation sensor.

Method for preparing static/dynamic 3D microcrack propagation sensor, sensor and equipment

An anti-corrosive concrete grouting material for coastal structure connection and a method for preparing the same, belonging to the technical field of anti-corrosion of coastal assembled structure connectors. The grouting material includes the following components: expansible compound cement, slag sand, fly ash (FA), polyvinyl alcohol (PVA) (containing an oxidant and a catalyst), graphene oxide (GO), a water reducer, an adjusting admixture, a defoaming agent, a mineral admixture and water. A shrinkage-free effect of the grouting material is realized through internal curing of GO-PVA hydrogel, micro-expansion of the compound cement and shrinkage reduction effect of the FA; an energy storage effect of a GO-PVA hydrogel micro-capacitor is exerted to avoid formation of a reinforcement corrosion micro-battery in a grouting material sleeve, a reinforcement corrosion self-immune effect is achieved, seawater corrosion resistance of the grouting material is improved by the slag sand, and it has huge economic and environmental protection benefits.

Anti-corrosive concrete grouting material for coastal structure connection and method for preparing the same

A carbon nanotube (CNT) assembled thin film modified steel wire array electrode, a preparation method and application thereof. The array electrode includes: a surface of a steel wire is negatively modified, and the surface of the steel wire is assembled with a plurality of layers of CNT thin films; one end of the steel wire is welded to a conductor, and a welding position between the steel wire and the conductor is wrapped with an insulating heat shrinkable tube; and the insulating template and the steel wire are encapsulated and cured by using an epoxy resin. The preparation method of the array electrode of the invention mainly includes the following steps: first, performing negative modification on a steel wire, then, assembling CNT thin films on the steel wire, and preparing the modified array steel wire into the CNT assembled thin film modified steel wire array electrode.

CNT assembled thin film modified steel wire array electrode, preparation method and application thereof

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Qingdao, China

Jianlin Luo