PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
The properties and processing and application of PTFE
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2022-12-08
Visits:
shenzhen dankai science and technology limited company specializing in the production of ptfe rod (ptfe), ptfe plate, ptfe tube, ptfe film, as well as ptfe
Ethylene gasket and other products, product performance is stable, reliable quality, and products cover most of the domestic industry. Today, let's introduce PTFE
The performance!
1. It can be used for the production of pipes, rods, plates, raw material belts and other materials;
2. After secondary processing, it can be made into thin plates and films;
3, can be used as a lubricant, thickener;
4, can be used as rubber, plastic, ink, paint, grease and other additives;
5, can be rolled into a thin belt for pipe thread sealing material;
6, can be used for spraying, dipping coating, etc;
7. It can be used in aerospace, machinery, electronics, chemical industry, medicine and other fields;
8. It can be made into high-frequency wire and cable sheath, high-insulation electrical parts, high-cold-resistant oil pipelines, corrosion-resistant chemical vessels, etc;
9. It can make bearings, films, gaskets, tube sheet rods, chemical pipelines, pipe fittings, etc., used in chemical aviation, electrical appliances, machinery and other fields;
10. It is mainly used for corrosion-resistant, wear-resistant materials and insulating layers of power supply and signal lines in the electrical industry.
Figure 1: PTFE tube Source: Dankai
Polytetrafluoroethylene has a high melting point, high melt viscosity, and is sensitive to shear in the amorphous state, and is prone to melt fracture. Therefore, regular thermoplastic molding methods cannot be used.
methods such as melt extrusion and injection molding, and can only use similar powders. Metallurgical methods are used for sintering.
The filling of PTFE can be preformed by plunger, free sintering or extrusion. The above method is usually suitable for products with a certain wall thickness and is not suitable for processing PTFE films.
(ptfe film) In recent years, China has carried out a lot of research. More mature processing techniques include calendering for dispersible PTFE resins with low hardness and good toughness
Metal turning of PTFE sintered products, as well as extrusion processing regular the extrusion method and in the calcination method, the resin is directly subjected to raw material processing without melt plasticization.
In addition to the above-mentioned one-time processing technology, there are some newly developed secondary processing technologies that deserve attention, such as PTFE vacuum forming technology, hot press forming and hot blow forming technology,
And isostatic molding processing technology. Teflon is the preferred material for corrosion-resistant lining, suitable for corrosion-resistant pipes, fittings, bellows, pumps, valves, kettles, storage tanks, towers
Frame and various standard equipment; widely used as a sealing material in the machinery, petrochemical, transportation, textile and construction industries; Teflon can also be used as a valve, bearing, piston ring, guide rail
Wait. Corrosion-resistant and low-friction parts; according to PTFE film treatment, it has selective gas permeability and can be used as a separation material to selectively pass gases or liquids, especially for filtration
Corrosive liquid; Due to the excellent biocompatibility of PTFE, many people have conducted in-depth research as a biomaterial in recent years.
In recent years, PTFE membranes have been developed at home and abroad as artificial organs such as artificial blood vessels. Heart valves and the like have been clinically used as prosthetic vessels and prosthetic branches for rhinoplasty.
material, and has achieved good results. According to the current research and production and application status at home and abroad, China should vigorously develop modified PTFE materials to make it
Commercialization, serialization, high performance. Of particular importance is the priority development of high demand for glass fibers, carbon fibers, graphite and copper. Powder filled PTFE, fully benefit
With China's rare earth resources, the development of new varieties of rare earth filled PTFE and nano modified PTFE will become a key research direction in China.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
PTFE, for, processing, materials, technology, with, lubricity, sealing
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