Determination method for agglomeration degree of non-ferromagnetic powder in suspension system

Abstract

The invention discloses a determination method for an agglomeration degree of non-ferromagnetic powder in a suspension system. The determination method comprises the following steps: (1) preparing different solid contents omega of powder suspension solutions; (2) utilizing pure water to respectively and serially dilute the solutions, then utilizing a nuclear magnetic resonance technology to respectively measure T2 relaxation time of the pure water and T2 relaxation time of the different gradient concentrations of diluted powder suspension solution samples and calculating out relaxation rates R2 and R2f; (3) calculating out the agglomeration degree phi (%) of powder in the suspension system; (4) drawing a corresponding relation curve between the agglomeration degrees phi (%) of the powder materials and the powder materials under different solid contents omega in the system and using the corresponding relation curve to evaluate dispersity difference of the powder materials. The determination method disclosed by the invention is simple and practical to operate, can effectively evaluate dispersity difference of powder particles in the suspension system, achieves the purpose of scientifically representing the agglomeration degrees of the powder materials and is favorable for improving powder material production technologies and product performance.

Description

technical field [0001] The invention relates to a method for measuring the degree of agglomeration of non-ferromagnetic powder in a suspension system, in particular to a method for measuring the degree of agglomeration of non-ferromagnetic powder in a suspension system using nuclear magnetic resonance technology. Background technique [0002] Powder materials with basic particle sizes at the submicron and nanometer levels endow the above materials with special properties due to small size effects, surface effects, quantum size effects, or macroscopic quantum tunneling effects. Scientifically characterizing the agglomeration state (degree of agglomeration) of the above-mentioned powder materials and establishing an agglomeration parameter that accurately describes its structure is of great significance for its application in medicine, materials, biology, environment, manufacturing, energy, food and other fields. [0003] Taking nanomaterials as an example, due to their small ...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems existing in the prior art, the present invention provides a method for measuring the degree of agglomeration of non-ferromagnetic powders in a water-based suspension system, using nuclear magnetic resonance technology to measure the degree of agglomeration of non-ferromagnetic powders in a suspension system, which is used to solve It is difficult to compare the dispersion effect of powder materials in different aqueous solution environments and different concentrations, so as to achieve the purpose of scientifically evaluating the state of powder agglomeration

Images