PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
Performance Comparison of PTFE Plate and Nylon Plate
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2022-12-09
Visits:
Introduction of 1. PTFE plate
PTFE plate is based on PTFE as the main raw material, after adding special substances processed, with excellent chemical stability, corrosion resistance, sealing,
High smoothness, non-stickiness, electrical insulation and outstanding anti-aging endurance. Nylon is the most important engineering plastic. Its wear resistance and tensile resistance are better. Today, we will start from the motorcycle
The rubbing performance, corrosion resistance, and temperature resistance are compared with nylon plates and PTFE plates.
1, friction performance: nylon plate has good wear resistance, its coefficient of friction is usually 0.1-0.3, about 1/4 of phenolic plastics. 1/3 of Babbt, so it is one
Self smooth data. However, the friction coefficient of PTFE plate is very low, and its deformation will be very serious.
2. Corrosion resistance: Nylon plate is not affected by chemicals, whether it is weak alkali, alcohol, ester, copper, hydrocarbon grease. While PTFE pads are important for most chemicals and
Solvent, showing the characteristics of inert, strong acid, strong alkali, boiling in aqua regia will not change, in addition to molten metal sodium and liquid fluorine. Can be used as engineering plastics, can be made
Teflon tubes, rods, belts, plates, films, etc. Usually used in high functional requirements of corrosion-resistant pipes, containers, pumps, valves and radar, high-frequency communication devices,
Radio devices, etc.
3, temperature resistance: it can adhere to a certain degree of mechanical strength at -60 degrees Celsius, heat temperature at 80-100 degrees Celsius. The PTFE gasket can be used at 250 ℃ to -180 ℃
Long time operation under temperature.
Simply put, PTFE plate is better than nylon plate in corrosion resistance and high temperature resistance. The wear resistance of nylon plate is better than that of PTFE plate.
Cold Press Sintering of 2. 5mm PTFE Plate
PTFE is one of the most popular industrial materials for many PTFE board manufacturers. Its finished PTFE board, tube, film, etc. are widely used in the machinery industry, medical
in the treatment industry. We can first understand the molding method of PTFE-cold pressing sintering method.
The cold pressing and sintering of 5mm PTFE plate is basically composed of three steps: pre forming, sintering and cooling:
1. Pre-forming is the cold pressing of the blank, the sieved resin is evenly added into the mold cavity according to the required amount of the product. For products whose pressure direction is completely similar to the wall thickness, the materials should be added all at once.
In; For products with more complex shapes, the required powder can be divided into several parts and added into the mold cavity. The amount of powder added each time should be compatible with the volume of the mold cavity filled with it, and should
Use several positive molds to pressurize the powder in different levels.
2. Sintering is a key process in the process of melting PTFE particles into a whole, and the quality of sintering directly affects the mechanical properties of the products. Sintering is generally self-
By heating in air under the state, there are also sintering under the protection of nitrogen or sintering by hot pressing.
3. The cooling process is a process in which macromolecules are transformed from amorphous state to crystalline state. The cooling rate after sintering of the product determines the crystallinity of the product, thus affecting the various items of the product.
Physical and mechanical properties.
Precautions for 3. Tubes and Fittings with Teflon Plates
To introduce several problems that need to be paid attention to when installing pipes and connectors with PTFE plates:
1. When processing PTFE materials, the general turning speed should not be too fast. Smoking must be prohibited during processing to avoid the contact of PTFE powder with fire and inhalation into the body. It is best to install the support and hanger.
At the end of the welding work in the assembly of PTFE plate. (Pipe supports and hangers).
2. To explain the PTFE plate can be used for a long time in the temperature range of -180 to 250, the friction coefficient is very low, and it is a good sliding material. (Saddle support)
3. PTFE material can not be in direct contact with open flame, when the temperature is higher than 415, it will produce thermal aging, which will quickly decompose toxic gases, so we need to use it before
Ensure that the temperature limit of aging cannot be exceeded to avoid poisoning accidents. (Pipe slide support).
4. If the above conditions are not met, during the welding process, the surface of the PTFE plate can also be covered with asbestos cloth or gas insulation material to avoid electric welding.
The slag splashed on the PTFE plate, causing unnecessary accidents and losses. (variable force spring hanger).
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
PTFE, sintering, backing plate, product, temperature, molding, cooling, friction performance, corrosion resistance, self-lubricating, strong acid and alkali, high temperature resistance
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