TiO2 giant electrorheological fluid and application thereof

Abstract

The invention relates to a TiO2 giant electrorheological fluid and application thereof. The preparation method of the TiO2 giant electrorheological fluid comprises the steps of: S1: mixing deionized water and anhydrous ethanol in a volume ratio of 3:100, and performing stirring to obtain a solution A, mixing butyl titanate and anhydrous ethanol in a volume ratio of 10:100, and performing stirring to obtain a solution B; S2: adding the solution B into the solution A under stirring, carrying out full reaction, and then conducitng centrifugation, washing and drying to obtain TiO2 particles, wherein the deionized water and butyl titanate are in a volume ratio of 1:5; S3: subjecting the TiO2 particles obtained by S2 to heat treatment at 120-200DEG C for 2h; and S4: mixing the TiO2 particles obtained in S3 with silicone oil to obtain TiO2 giant electrorheological fluid, which has a TiO2 particle solid content of not less than 1.0g / mL. The TiO2 giant electrorheological fluid provided by the invention has the advantages of simple preparation process, high electrorheological efficiency and small leakage current density, and can be used in a wide temperature range. Under optimal conditions, the electrorheological efficiency is up to 2000 times and the leakage current density is less than 20microA / cm<2>, therefore the TiO2 giant electrorheological fluid is suitable for industrial application.

Description

technical field [0001] The invention belongs to the field of new intelligent materials, more specifically, relates to a TiO 2 Giant electrorheological fluid and its application. Background technique [0002] metal oxide TiO 2 With a high dielectric constant, it is a typical electrorheological fluid raw material with great research and development potential. But pure TiO 2 The yield strength of electrorheological fluid is very small, which cannot meet the requirements of industrialization. People focus on its modification. Common modification methods include doping, polar molecule coating, and changing specific surface area. These modification methods have achieved good results, so that the yield strength can reach more than 100kPa at a lower electric field strength, and the leakage current is also controlled within a reasonable range, but the preparation of TiO by modification 2 The preparation process of electrorheological fluid is complicated, and there are many experi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome TiO in the prior art 2 Electrorheological fluid preparation process is complicated, the operating temperature range is narrow, the durability is weak, and the actual industrial application is difficult, providing a TiO 2 giant electrorheological fluid

Images