The improvement of low-temperature plasma surface treatment machine on the surface bonding effect of PTFE materials:
PTFE material has excellent performance but it is difficult to bond with other materials. In order to improve the bonding effect of PTFE material, the traditional sodium naphthalene solution etching and the surface treatment process of low-temperature plasma surface treatment machine are the two mainstream treatment methods at present, then plasma treatment machine How to improve the bonding effect between the surface of PTFE material and other metals, plastics and other materials? In what ways can the bonding effect be tested?

1. Operation process of plasma surface modification and activation of PTFE Teflon material
Similar to other treatable materials, the low-temperature plasma surface treatment technology of the low-temperature plasma surface treatment machine can also achieve modification treatments such as cleaning, etching, activation, and grafting of PTFE polytetrafluoroethylene materials, plasma surface polymerization, plasma exchange, etc. Reactions such as coupling can change the microstructure and chemical properties of the PTFE surface to a certain extent to achieve the improvement of the surface adhesion of PTFE polytetrafluoroethylene materials.
Put the PTFE Teflon to be treated into the chamber of the plasma surface treatment equipment, turn on the vacuum pump to pump to a certain vacuum value; then pass in the process gas, turn on the plasma generator, ionization produces plasma and reacts with the surface of the material. The by-product of PTFE is pumped away by a vacuum pump, and a layer of polar substances is polymerized, grafted, and deposited on the surface; after the treatment process is completed, the plasma generator is turned off, the gas is blown back to break the vacuum, and the chamber is opened to take out the treated PTFE iron. Flon material.
Regarding the improvement of the bonding effect of the low-temperature plasma surface treatment machine on the surface of PTFE materials, it can usually be reflected by the degree of the water contact angle. The degree of the water drop angle is not constant. The same material, different processing parameters, the achievable water drop angle The number and hydrophilic aging are also different. In addition, high and low temperature thermal cycles, chemical immersion corrosion, and UV ultraviolet light irradiation decomposition tests are the main ways to verify whether the bonding performance of PTFE polytetrafluoroethylene materials fails after treatment, which tests the reliability of plasma surface treatment technology and process.
2. The basic principle of plasma surface modification and activation of PTFE Teflon
PTFE Teflon monomer is composed of four fluorine atoms symmetrically arranged on two carbon atoms, and the bond length of the CC bond and the CF bond is relatively short, so the structure of the PTFE Teflon molecule is firm and stable, and it is difficult to compare with other substances. A chemical reaction occurred.
The internal components of the plasma of the low-temperature plasma surface treatment machine are diverse and lively, with both electrical and chemical properties. When the plasma with certain energy and chemical characteristics reacts with the PTFE Teflon material, it can break the CF bond on the PTFE surface, and introduce some polar groups to fill the position where the F atom is detached, forming a bondable wetting surface.