Novel salt spray test method

Abstract

The invention belongs to the technical field of salt spray tests, and discloses a novel salt spray test method which comprises the following steps: (1) test temperature: simulating the temperature (37DEG C) of a human body; (2) salt solution solubility: simulating the salinity concentration (0.9%) in a human body; (3) pH value: simulating the pH value in a human body, wherein the pH value is weakly alkaline and is 7.35-7.45; (4) a test process: simulating the use frequency of a medical instrument, and spraying for 1h and drying for 1h to form a cycle; and (5) testing time: cutting down the test time according to the actual use time of the medical instrument, and adopting 12 cycles for 24 hours. In combination with the existing salt spray test requirements, the corrosion influence of the environment in the human body on the medical surgical instrument is preliminarily simulated so as to carry out qualitative evaluation. The method can evaluate the quality and effectiveness of the protective covering layer and the decorative layer of the medical instrument and the material thereof, locate potential problem areas, and discover quality control defects, design defects and the like; anda preferred material and evaluation equipment are adopted.

Description

technical field [0001] The invention belongs to the technical field of salt spray test, in particular to a novel salt spray test method. Background technique [0002] At present, the salt spray test is mainly used to detect equipment exposed to the atmosphere with high salt content, such as equipment working on the coast, equipment working on ships, etc. It is suitable for evaluating equipment and its material protective covering and decorative layers Quality and effectiveness, locating potential problem areas, uncovering quality control deficiencies and design flaws, etc. The current salt spray test methods are divided into three types, which are neutral salt spray test, acetic acid salt spray test, and copper accelerated acetic acid salt spray test. The main test standards are GB / T 10125-2012 / ISO 9227:2006 "Artificial Atmosphere Corrosion Test Salt Spray Test", GB / T 2423.17-2008 "Environmental Testing for Electrical and Electronic Products Part 2: Test Method Test Ka: Sal...

AI Technical Summary

Problems solved by technology

[0009] (4) The spray and drying time of the conventional salt spray test do not match the frequency of use of surgical instruments

[0010] The significance of solving the above problems and defects is: at present, there is a certain corrosion in the actual use of surgical instruments, and if this corrosion cannot be detected and prevented early, it will lead to more serious consequences: 1) Corrosion in the surgical process 2) After the surgical instrument is corroded, it will reduce the strength of the original instrument, which will lead to accidents during the operation and cause serious consequences.

Images