Polymer-based composite material sensing civil engineering structure super-deformation, and preparation method and application thereof

A technology of civil engineering structures and composite materials, which is applied in the field of polymer-based composite materials and its preparation, can solve the problems of small deformation and unreported research on material sensitization, and achieve the effects of easy acquisition, convenient preparation, and easy realization

Active Publication Date: 2015-07-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reports seen so far focus on the pull-sensitivity research of conductive silicone rubber, and the deformation is small; but the pull-sensitivity research of the material of the present invention has not yet been reported

Method used

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  • Polymer-based composite material sensing civil engineering structure super-deformation, and preparation method and application thereof
  • Polymer-based composite material sensing civil engineering structure super-deformation, and preparation method and application thereof

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Experimental program
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specific Embodiment approach 1

[0024] Embodiment 1: This embodiment provides a polymer-based composite material capable of sensing super large deformation in civil engineering and its preparation method. The deformation sensing performance and preparation method of the composite material will be described one by one below.

[0025] 1. Preparation of composite materials

[0026] The preparation steps of materials, the consumption of each material and the preparation process are described as follows in the present embodiment:

[0027] In the raw materials used in the composite material in this embodiment, water: polyacrylamide: montmorillonite = 10:3:5, carbon fiber in carbon-based materials: carbon nanotubes: carbon black = 3:15:20, the amount of methyl cellulose The amount of polyacrylamide and montmorillonite is 0.4% of the total amount of polyacrylamide and montmorillonite, the amount of polyvinylpyrrolidone is 20% of carbon nanotubes, and the amount of carbon-based materials is 2.8% of the total amount o...

specific Embodiment approach 2

[0035] Embodiment 2: The difference between this embodiment and Embodiment 1 is that water: polyacrylamide: montmorillonite=10:3:4, carbon fiber in carbon-based materials: carbon nanotubes: carbon black=2:10: 25. The amount of methylcellulose is 0.3% of the total amount of polyacrylamide and montmorillonite, the amount of polyvinylpyrrolidone is 18% of carbon nanotubes, and the amount of carbon-based materials is 2.6% of the total amount of polyacrylamide and montmorillonite %.

specific Embodiment approach 3

[0036]Specific embodiment three: the difference between this embodiment and specific embodiment one is that water: polyacrylamide: montmorillonite = 10:4:3, carbon fiber in carbon-based materials: carbon nanotubes: carbon black = 4:20: 15. The amount of methyl cellulose is 0.5% of the total amount of polyacrylamide and montmorillonite, the amount of polyvinylpyrrolidone is 22% of carbon nanotubes, and the amount of carbon-based materials is 3.2% of the total amount of polyacrylamide and montmorillonite %.

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Abstract

The invention discloses a polymer-based composite material sensing civil engineering structure super-deformation, and a preparation method and an application thereof. The polymer-based composite material is prepared from the raw materials of polyacrylamide, montmorillonite, water, methyl cellulose, polyvinyl pyrrolidone and a carbon-based material. With the adhesiveness of polyacrylamide after absorbing water, montmorillonite is added in polyacrylamide, such that a polymer-based material with adjustable flexibility and large deformation is prepared; and the carbon-based material is doped in the polymer substrate, such that the composite material with good conductivity is prepared. According to the strain-sensing composite material provided by the invention, polymer is adopted as a substrate, and the material is flexible, such that the material can sense the super-deformation of a civil engineering structure. The raw materials needed in the preparation are easy to obtain. The preparation method and needed instrument are easy to realize.

Description

technical field [0001] The invention relates to a deformation-sensing polymer-based composite material and its preparation method and application, in particular to a polymer-based composite material capable of sensing super-large deformation of civil engineering structures, its preparation method and application. Background technique [0002] Civil engineering structures involve all aspects of human life, and the monitoring of structures is of great significance. Civil engineering structures refer to various engineering facilities built on the ground or underground, on land or in water, directly or indirectly serving human life, production, military affairs, and scientific research, such as houses, roads, dams, bridges, power stations, airports, and protective engineering . In recent years, a large number of buildings, bridges and other public facilities have caused irreversible major life and economic losses due to structural damage. If the structure can be well monitored,...

Claims

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Application Information

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IPC IPC(8): C08L33/26C08K9/04C08K7/06C08K7/24C08K3/04C08K3/34
Inventor 乔国富杨会苗洪毅关新春欧进萍
Owner HARBIN INST OF TECH
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