PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
PTFE Processing and Main Applications
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2022-12-27
Visits:
PTFE has a high melting point, high melt viscosity, and is very sensitive to shear in the amorphous state, which is prone to melt fracture, so it cannot be used for melt extrusion, injection molding, etc.
The regular thermoplastic molding process can only be sintered by a method similar to powder metallurgy.
The manufacture of filled PTFE is the same as the molding of PTFE, which can be preformed, free sintering processing, or plunger extrusion molding. The above processing technology is generally suitable
Products with a certain wall thickness are not suitable for the processing of PTFE films. In recent years, a large number of studies have been carried out in China. The more mature processing technologies include: for dispersive PTFE resins
The low hardness and good toughness of Dankai PTFE sintered products are used for metal cutting. There is also a synthetic method regular extrusion and calendering.
The extrusion process of the method, the resin is not melted and plasticized, and the raw material is processed directly.
Figure 1: PTFE tube Source: Dankai
In addition to the primary processing technology described above, there are some newly developed secondary processing technologies worthy of attention, such as PTFE vacuum forming technology, hot pressing and thermal forming.
Blow molding technology, equal pressure molding processing technology, etc. PTFE is corrosion-resistant pipe, pipe fittings, bellows, pump body, valve, kettle, tank, tower and all kinds of standard equipment
The preferred material for lining; as a sealing material in the machinery, petrochemical, transportation, textile and construction industries are widely used; Dankai PTFE can also be used as valves, bearings, pistons
Rings, guide rails, etc. require corrosion resistance and low friction parts.
According to the Dankai PTFE film after treatment with selective permeability, can be used as a separation material, selective through the gas or liquid, especially the filtration of corrosive liquids;
Ethylene has excellent biocompatibility. In recent years, many people have conducted in-depth research as a biological material. In recent years, PTFE membrane has been used as an artificial organ at home and abroad,
Such as artificial blood vessels, heart valves, etc., for example, in clinical as artificial blood vessels, nasal plastic prosthesis stent materials, have achieved good results.
According to the current situation of research, production and application at home and abroad, China should vigorously develop modified PTFE materials, so that their commercialization, serialization, high performance, especially the priority is to develop
The company has a large demand for PTFE filled with glass fiber, carbon fiber, graphite and copper powder, and makes full use of China's rare earth resources to develop rare earth filled PTFE and nano-modified PTFE.
New PTFE varieties will be the key research direction in the future.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
Ptfe, processing, molding, materials, technology, adoption, research, filling
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