Negative-Poisson ratio multifunctional sponge and preparation method thereof

• Main Authors: DAI ZHAOHE, LIU LUQI, ZHANG ZHONG
• Format: Patent
• Language: English
• Published: 28.10.2015
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a negative-Poisson ratio multifunctional sponge and a preparation method thereof. The negative-Poisson ratio multifunctional sponge is loaded with a nano material, and the negative-Poisson ratio multifunctional sponge has a pore structure composed of bent fiber; the curved fiber is sunken inward. The preparation method comprises the steps that a sponge substrate is loaded with the nano material, and then the negative-Poisson ratio multifunctional sponge is obtained through hot pressing. The negative-Poisson ratio multifunctional sponge has the advantages of being high in conductivity, high in energy dissipation, excellent in hydrophobicity, and high in piezoresistive sensitivity; in addition, the inward-sunken bent fiber structure of the negative-Poisson ratio multifunctional sponge enables the negative-Poisson ratio multifunctional sponge to achieve a negative Poisson ratio and higher tensile failure strain, lateral expansion can be achieved in tension, lateral contraction can be achieved in compression, and the application prospect is wide.