Fluorite

Polytetrafluoroethylene (PTFE) is a high-performance synthetic polymer widely used in chemical, electronic, mechanical, and medical fields due to its excellent chemical stability, high-temperature resistance, low coefficient of friction, and insulating properties.

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Product Overview
Fluorite, with the chemical formula CaF2, holds an irreplaceable position as a raw material. It is an isometric mineral, typically exhibiting cubic, octahedral, or rhombic dodecahedral crystal forms. With a Mohs hardness of 4, it is considered a relatively soft mineral and is easily scratched. Its specific gravity is approximately 3.18, it has a vitreous luster, and often fluoresces under ultraviolet light, hence its name "fluorite." Chemically, it is insoluble in water but dissolves in strong acids, releasing hydrogen fluoride (HF). Fluorite has a melting point of approximately 1418 ℃ and exhibits high thermal stability. These physical and chemical properties give fluorite unique advantages in industrial applications.

The Role of Fluorite in PTFE Production
Polytetrafluoroethylene (PTFE) is a high-performance synthetic polymer widely used in chemical, electronic, mechanical, and medical fields due to its excellent chemical stability, high-temperature resistance, low coefficient of friction, and insulating properties. In the PTFE production process, fluorite plays a crucial role as the primary source of fluorine.
PTFE production begins with the preparation of hydrogen fluoride (HF), and fluorite is the main raw material for producing hydrogen fluoride. The specific process is as follows:

1. Decomposition of Fluorite: Fluorite reacts with sulfuric acid to produce hydrogen fluoride and calcium sulfate. The reaction equation is:
[CaF2+ H2SO4 (conc.) → CaSO4 + 2HF ↑ ] This step is fundamental to PTFE production because hydrogen fluoride is a key raw material for subsequent reactions.

2. Purification of Hydrogen Fluoride: The generated hydrogen fluoride undergoes purification to remove impurities, yielding high-purity hydrogen fluoride gas.

3. Fluorination of Chlorinated Hydrocarbons: Under the action of a catalyst, hydrogen fluoride reacts with chlorinated hydrocarbons (such as chloroform) to produce fluorinated hydrocarbons (such as trifluoromethane). These fluorinated hydrocarbons are important intermediates in PTFE production.

4. Polymerization of PTFE: Fluor inated hydrocarbons undergo free radical polymerization to produce polytetrafluoroethylene (PTFE). This process is typically carried out under high temperature and pressure, ultimately yielding PTFE resin.
Fluorite, as the starting point for PTFE production, directly affects the performance of the final product. Therefore, high-purity fluorite plays an irreplaceable role in PTFE production.

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Equipped with advanced production facilities and precision manufacturing equipment, the company specializes in the R&D and manufacturing of PTFE functional films, composite materials, and sealing products. Supported by an experienced engineering team and strong technical expertise, we ensure stable quality and efficient production across every stage of manufacturing.

Driven by independent innovation and continuous R&D, the company has obtained ISO9001 and ISO14001 certifications, multiple invention patents, and various national honors. From raw material selection to finished product inspection, strict quality control enables us to deliver reliable, high-performance material solutions for electronics, semiconductors, new energy, aerospace, and other advanced industries worldwide.

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