Ice adhesion shearing strength measuring device

Abstract

The invention provides an ice adhesion shearing strength measuring device which comprises a base, a bearing and a central shaft which are connected in sequence by an arm of force, wherein the base is rectangular; two guide rails are arranged at two sides of the central axis in the length direction of the rectangular base; the cross sections of the guide rails are trapezoid; a trapezoid sliding block is adhered to each guide rail; rectangular grooves are formed below the sliding blocks; the sliding blocks can slide on the corresponding guide rails along the length direction of the base; the bearing is arranged in the middle of the base; the inner wall of the bearing is connected with the central shaft; the central shaft can rotate freely and is connected with the arm of force; a structure capable of being matched with a torque spanner is arranged at the top end of the central shaft; arc-shaped shapes are arranged on two ends of the sliding blocks and the arm of force, so that adhesion shearing force between ice and a material coating can be measured relatively accurately; water absorption sponge is adhered to an arc-shaped support of the arm of force, so that the integration of an ice layer can be ensured. By using the device, the adhesion strength between the ice and the surface of a material can be conveniently measured; compared with the prior art, the device is used for solving the influence of non-integration of the interior of the ice layer to the measurement result, and is simple in structure and easy to operate.

Description

technical field [0001] The invention relates to a device for measuring adhesion strength, in particular to a device for measuring ice adhesion shear strength. Background technique [0002] At present, there are many methods for measuring the adhesion strength of ice and coating surfaces, but they lack uniform standards and stability, and related instruments also have various deficiencies. For example, the patent "An Ice-coated Mold, Device and Method for Measuring Ice-coated Shear Force" (China Patent Database, Publication No.: CN103760106A, Publication Date 2014-04-30), this invention uses a pull-thrust tester that will use The frozen ice cubes in the mold are pushed away to measure the adhesion shear force between ice and material. This device is expensive and cannot guarantee that the thrust direction is in the same plane as the shear plane, resulting in inaccurate measurement. For example, the centrifugal ice adhesion measurement device (Ice adhesion on super-hydrophobi...

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Problems solved by technology

For example, the patent "An Ice-coated Mold, Device and Method for Measuring Ice-coated Shear Force" (China Patent Database, Publication No.: CN103760106A, Publication Date 2014-04-30), this invention uses a pull-thrust tester that will use The frozen ice cubes in the mold are pushed away to measure the adhesion shear force of ice and materials. This device is expensive and cannot guarantee that the thrust direction is in the same plane as the shear plane, resulting in inaccurate measurement.

For example, the centrifugal ice adhesion measurement device (Ice adhesion on super-hydrophobic surfaces, Applied Surface Science, Volume 255, Issue 18, 30 June 2009, Pages8153-8157) freezes water droplets on the material, which needs to be trimmed and then rotated at high speed, Until the ice breaks away, this process requires high-speed cameras to monitor the whole process, and the equipment is expensive and dangerous

For example, scrape-off measurement method (Reducing ice adhesion by hierarchical micro-nano-pillars Applied Surface Science, Volume 305, 30 June 2014, Pages 589-595, Yang He, Chengyu Jiang, Xiaobao Cao, Jun Chen, Wei Tian, ​​Weizheng Yuan) passed The probe moves the ice droplets scraped off the surface of the ice material, and the probe is connected with a mechanical sensor to obtain the ice adhesion force. This device cannot guarantee that the force applied by the probe is parallel to the ice adhesion plane, and lacks the stability of the test results.

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