Method for measuring densities of cotton substances by adopting Young's modulus tensile tester

Abstract

The invention discloses a method for measuring the densities of cotton substances by adopting a Young's modulus tensile tester. The method is characterized in that the setting of a commonly-used digital display hydraulic torque Young's modulus measuring instrument is improved: liquid in a hose and a syringe is emptied and is changed into with air; a drill bit clamp of a tensile steel wire is screwed to be attached to a frame, so that the length of the tensile steel wire is prevented from being changed. According to the method disclosed by the invention, the improved Young's modulus tensile tester is adopted for measuring pressure applied for changing the volume in a device and calculating to obtain the volume of an to-be-measured object, and further the density of the to-be-measured object is obtained; the result obtained by adopting the method disclosed by the invention is close to density data measured by adopting a traditional method, and the experimental result is basically consistent with the theoretical result, so that the method has practicability; the measurement method disclosed by the invention is simple in operation and higher in accuracy, and is particularly suitable for measuring the densities of the objects such as the cotton and sponge which are difficultly measured by using a conventional method; in addition, the condition that the measured object is prevented from being damaged or wetted.

Description

technical field [0001] The invention belongs to the technical field of material physical characteristic detection, and in particular relates to a new method for measuring the density of cotton-like substances by using a Young's modulus extensometer. Background technique [0002] For a homogeneous substance, the mass per unit volume is the density. Density is an inherent property of matter, and it does not change with changes in its composition, shape, luster and other external characteristics. For geometric objects with uniform shape and regular shape, their density can be determined by measuring their basic quantities, but this method cannot be used for measurement of objects with irregular shapes, especially cotton objects with irregular shapes and stained with water or oil The exact volume cannot be measured, and there is air in the cotton fiber, which cannot be counted as the volume of cotton. No matter how squeezed and rubbed, the gas cannot be completely discharged. ...

AI Technical Summary

Problems solved by technology

[0003] In view of the current problem that it is difficult to measure the density of objects such as cotton objects that are irregular in shape and stained with water or oil, and whose accurate volume cannot be measured by conventional methods, the purpose of the present invention is to provide an experimental method for measuring Young's modulus. new method to measure the density of such objects

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