Method for measuring active concentration of sodium naphthalin treatment solution

Abstract

The invention discloses a testing method of sodium-naphthalene solution active concentration. In the absence of air and water, hydrochloric ether is used as dechlorinating agent to act with sodium-naphthalene solution, reaction temperature is 40-70 DEG C, reaction time is 5-15 minutes, sodium chloride is generated, at pH 6-10, sodium chloride is generated with water extraction, extraction time is1-5 minutes, titrate sodium chloride in water solution with silver nitrate titrating solution, sodium-naphthalene solution active concentration is calculated according the consumption of silver nitrate standard solution. The invention has advantages of scientific test principle, reasonable design method, simple acquired method, simple test operation, which can be completed within 10-15 minutes and fast analysis speed, the relative standard deviation is less than 2%, the test result has good reproduction quality, and the test method is effective and practical.

Description

technical field The invention relates to sodium naphthalene complexes, in particular to a method for measuring the activity concentration of sodium naphthalene treatment solution. Background technique Polytetrafluoroethylene material (hereinafter referred to as PTFE) is a polymer material with excellent performance, which has excellent chemical stability, electrical insulation, extremely low coefficient of dynamic friction, non-flammable, chemical corrosion resistance and high mechanical strength. It is considered to be one of the most suitable solid materials. However, PTFE has poor wettability and cannot be infiltrated by adhesives, which limits its application range. The chemical treatment of PTFE products with sodium naphthalene treatment solution can improve the surface activity of PTFE products, reduce the contact angle and increase the surface energy, thereby significantly improving the adhesion and wettability, thereby expanding its application range. The surface ...

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Problems solved by technology

Calculation of activity concentration of sodium naphthalene treatment solution treatment solution:

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