Difference Between PTFE and RPTFE

Thekey differencebetween PTFE and RPTFE is thatPTFE is polytetrafluoroethylene, whereas RPTFE is reinforced polytetrafluoroethylene.

The term PTFE stands for polytetrafluoroethylene, which is a polymer material containing fluorocarbon units as the repeating unit. The common name for this polymer material is Teflon. RPTFE, on the other hand, is the reinforced form ofTeflon。Reinforced means Teflon is added with some other materials to make it stronger. Generally, glass andcarbon是特氟龙的增强材料。

内容

1.Overview and Key Difference
2.What is PTFE
3.What is RPTFE
4.并排比较 - PTFE vs rptfe以表格形式
5.概括

聚四氟乙烯是什么?

PTFE is polytetrafluoroethylene. The common name for this polymer material is Teflon. It has fluorocarbon units as repeating units. It is a synthetic fluoropolymer. The general formula of this material is (C₂F₄)_n。We can show it as follows:

Figure 01: Repeating Unit of Teflon

PTFE is a high molecular weight material containing only carbon and氟atoms. It exists in the solid-state at room temperature. Water cannot wet this material because it ishydrophobic。此外，该材料被认为是非反应性的，可作为不粘涂层。由于C-F键的强度而产生这种非反应性。由于此属性，PTFE可用于制造容器和管道。此外，我们也可以将此材料用作润滑剂。作为润滑剂，它可以减少机械的摩擦和能耗。此外，这种材料几乎在所有溶剂中都易溶。

The method of Teflon production is free-radical polymerization. We can make Teflon by polymerizing tetrafluoroethylene. However, this production process requires specialized apparatus because tetrafluoroethylene tends to explosively convert into tetrafluoromethane. It is a dangerous side reaction.

在考虑其聚合物性能时，PTFE是热塑性聚合物。它在室温下以白色固体形式出现。该材料的密度约为2200 kg/m³。在很低的温度下,聚四氟乙烯hows very high strength and toughness with self-lubrication properties. At high temperatures, it has good flexibility as well. Since this material is highly unreactive, the chemical species that can make a significant effect on it includes highly reactive chemical species such as alkali metals.

What is RPTFE?

RPTFE is reinforced polytetrafluoroethylene. This material contains some added components other than polytetrafluoroethylene molecules. This is a variation of Teflon. Often, the fillers manufacturers use for the reinforcement include glass fibre, carbon, bronze, graphite, etc. Using glass fibre is the most common method, and the content of glass fibre in RPTFE can vary from 5 to 40%. This addition improves the wear properties of the material. If we are using carbon as the filler material, the content may vary from 10 to 35%. When increasing the carbon content, the addition of graphite is done.

What is the Difference Between PTFE and RPTFE?

PTFE and RPTFE are important polymer materials. The key difference between PTFE and RPTFE is that PTFE is polytetrafluoroethylene, whereas RPTFE is reinforced polytetrafluoroethylene. Due to the reinforcement, RPTFE has high strength compared to PTFE. PTFE contains only polytetrafluoroethylene units, but in RPTFE there is a reinforcing material other than polytetrafluoroethylene units. This added material is often glass fibre. However, other reinforcing components can be used for this purpose as well. Some examples include carbon, bronze, and graphite.

以下是PTFE和RPTFE之间差异的列表。

摘要 - PTFE vs rptfe

Reference:

1.“The Properties and Advantages of PTFE.” AFT Fluorotec, 19 July 2016,Available here。
2.“Reinforced PTFE.” Solutions in Plastics, 26 Apr. 2007,Available here。
3. “PTFE/RPTFE VALVE SEAL.” D.Jones & Co (P) Ltd, 25 Apr. 2018,Available here。