PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
What are the characteristics and uses of PTFE turning parts?
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2022-10-10
Visits:
1.PTFEWhat are turning parts?
PTFE car parts are made of PTFE resin according to the specifications of the product molded into blanks, after turning, milling, fine.
Processed.
PTFE (PTFE/TEFLON) is a variety of fluoroplastics with a wide range of uses and quantities, with excellent comprehensive properties: resistance
High and low temperature, aging resistance, non-adhesion, high insulation, high lubrication, non-toxic. Widely used in chemical industry, machinery, bridges, electricity
power, aviation, electronics and other fields, is one of the ideal engineering materials in modern industrial civilization.
2,Characteristics of PTFE turning parts
Heat resistance: has excellent resistance to high and low temperature characteristics. generally in-180 ℃ ~ 260 ℃ can be used continuously, with good
Thermal stability, can work at freezing temperatures without embrittlement, and does not melt at high temperatures.
Corrosion resistance: almost no chemical and solvent erosion, can protect parts from any kind of chemical corrosion
Erosion.
Resistance to atmospheric aging:Long-term exposure to the atmosphere in the surface and performance remain unchanged.
Non-stick:Solid materials have a small surface tension without adhering to any substance.
Insulation:It has strong dielectric properties (dielectric strength of 10kv/mm).
Lubricity:Has a low coefficient of friction. The friction coefficient changes when the load slides, but the value is only between 0.04 and 0.15.
It is precisely because of its strong lubricity, which is very prominent. Non-toxic: with physiological inertia.
Figure 1: PTFE Turning Parts Source: Dankai
3Production process of Teflon turning parts
The production process of high-pressure PTFE turning parts includes the following production steps:
A), the production of component a: according to the mass ratio of 1:100 respectively weigh melanin and dispersed polytetrafluoroethylene emulsion, first weigh
The dispersed PTFE emulsion is added to the blender, and then the melanin is added to the dispersed PTFE emulsion.
In the process, the dispersed polytetrafluoroethylene emulsion and melanin are mixed into a paste with a mixer to prepare component A for standby.
B) making raw material B: weighing component a and polytetrafluoroethylene powder respectively according to the mass ratio of 1:50, and then mixing polytetrafluoroethylene
The powder and component A are added to the powder mixer in turn, and the mixture is taken out after stirring to prepare the raw material B.
Use.
C), baking: the above-mentioned raw material B into the oven for baking treatment, after baking, raw material B with the oven cooling, and.
Take it out.
D), extrusion granulation: the baked raw material B into the extruder, extrusion molding, cooling granulation, the preparation of granular insulation
Sub-raw materials.
E), turning parts molding: the granular insulator raw materials prepared in step d are put into the injection molding machine, and the injection molding machine is injection molded to obtain
to the finished product.
4,PTFEUse of turning parts
The main function of Teflon insulators is to achieve electrical insulation and mechanical fixation, for which a variety of electrical and mechanical properties are required.
Please. If no breakdown or flashover occurs along the surface under the specified operating voltage, lightning overvoltage and internal overvoltage;
Under the long-term and short-term mechanical loads specified, no damage and damage will occur; under the specified mechanical and electrical loads and various environments
After long-term operation under the conditions, No obvious deterioration occurs; the hardware of the Teflon insulator does not produce bright under operating voltage.
Corona discharge phenomenon, so as not to interfere with radio or television reception. Because insulators are widely used devices, they are connected to them.
The fittings also require interchangeability. in addition, The technical standards for insulators also require different types and conditions of use.
Various electrical, mechanical, physical and environmental conditions of the insulator test, to test its performance and quality
Amount.
Gasket seals and lubricating materials used in various media, as well as electrical insulation used at various frequencies. Capacitor
Dielectric, wire insulation, external insulation of electrical appliances, etc.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
PTFE, turning parts, high temperature resistance, corrosion resistance, non-stick, high insulation, aging resistance
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