Method for determining content of metal elements in polyvinylidene fluoride resin

A polyvinylidene fluoride resin and metal element content technology, which is applied in the field of fluoropolymer analysis and detection, can solve the problems of inability to eliminate organic interference, affect the accuracy of analysis results, high cost and maintenance costs, and achieve instrument cost and maintenance costs Low, stable and reliable results, low detection limit effect
CN112147130AInactive Publication Date: 2020-12-29JUHUA GROUP TECH CENT +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JUHUA GROUP TECH CENT
Publication Date
2020-12-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for determining the content of metal elements in polyvinylidene fluoride resin. The method comprises the following steps of heating and dissolving a polyvinylidene fluoride resin sample by using an organic solvent, and analyzing the metal element content of the polyvinylidene fluoride resin sample by using an inductively coupled plasma emission spectrometer (ICP-OES) in an organic system direct sample injection mode. The method specifically comprises the following steps of (1) preparing a polyvinylidene fluoride resin sample solution; (2) preparing a standard solution by a standard addition method; (3) setting analysis conditions of the inductively coupled plasma emission spectrometer; and (4) measuring the content of metal elements in the sample. The analysis method is high in precision, low in detection limit, capable of rapidly carrying out qualitative and quantitative detection on the inorganic metal elements in the sample, easy to operate, rapid inanalysis, stable and reliable in result, low in instrument cost and maintenance cost and easy to popularize and apply.
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Description

technical field

[0001] The invention belongs to the technical field of analysis and detection of fluorine-containing polymers, and in particular relates to a method for determining the content of metal elements in polyvinylidene fluoride resin. Background technique

[0002] Polyvinylidene fluoride (PVDF) resin is a homopolymer of 1,1-difluoroethylene (VDF) or a copolymer of VDF and other fluorine-containing vinyl monomers. PVDF resin is a thermoplastic with excellent performance, which is widely used in petrochemical, construction, food, water treatment, electrical and electronic and fluorocarbon coatings and other fields. In special application areas such as tap water pipelines, food packaging materials, and storage and transportation of high-purity chemicals in the semiconductor industry, the requirements for the content of metal elements in PVDF resin are relatively high. Therefore, it can quickly and accurately determine the content of impurity metal elements in PVDF res...

Claims

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