Textile and non-woven cloth plasma surface treating device

Abstract

The present invention belongs to the field of gas discharge technology, and relates to a plasma surface treatment equipment for textiles and non-woven fabric. Said plasma surface treatment equipment for textiles and non-woven fabric includes high-frequency power supply, high-voltage electrode and grounding electrode. The high-voltage electrode is at least one medium tube whose interior is filled with metal powder and sealed or one metal tube whose exterior is covered with silicone rubber, the high-voltage end of said high-frequency power supply is inserted into the medium tube interior by means of conducting wire, and the grounding electrode is a metal electrode covered with medium plate or a metal rod whose exterior is covered with silicone rubber tube, the grounding end of said high-frequency power supply is connected with metal electrode by means of conducting wire. Said invention can be used for making large-area plasma surface treatment of textiles, non-woven fabric and paper material, etc.

Description

technical field [0001] The invention belongs to the technical field of gas discharge, in particular to a plasma surface treatment device for textiles and non-woven fabrics. Background technique [0002] The low-temperature plasma generated by gas discharge contains a large number of active particles of various types. These active particles can cause etching, oxidation, reduction, cross-linking, polymerization, grafting and other reactions on the surface of the material in contact with the material, causing the surface of the material to Changes in chemical composition and physical and chemical properties, such as changing the hydrophilicity, adhesion, dyeability, shrink resistance, antifouling and electrical conductivity of the surface of the material. This surface treatment method has the characteristics of simple process, easy operation, low energy consumption, and no pollution to the environment. In the textile industry, this method is used for etching activation, graft ...

AI Technical Summary

Problems solved by technology

But for large-scale industrial production, this discharge method has two important disadvantages: ① the discharge and reaction chamber are in a low pressure state, the vacuum system is essential, and the investment and operating costs of the industrial vacuum system are relatively high; ② In the process of industrial processing, it is necessary to continuously open the reaction chamber to take out the finished product, add the test sample, and then re-evacuate, fill in the working gas and discharge. This batch processing method is difficult to achieve continuous production, and the efficiency is not high.

DBD plasma has been used for plasma surface treatment, but DBD in air or other general gases at atmospheric pressure usually consists of filamentous streamer discharges, which have energy due to their uneven spatial distribution of current. Focusing on the streamer discharge, there will be two important problems when processing materials such as fabrics or non-woven fabrics: ①The local temperature of the streamer discharge is too high, which may easily cause local burns or perforations of the material during processing; The cloth is a heterogeneous material, and the plasma is unevenly distributed on the surface of these materials. The discharge is stronger in the mesh part of the material or the thinner part of the material, and the discharge is weaker in the part that needs plasma treatment.

However, due to the uniform distribution of the electric field in the discharge gap and the high breakdown field strength of the commonly used DBD with parallel plate electrode structure, uneven filamentary discharge will be formed once the breakdown occurs, so it cannot be used to treat materials such as textiles and non-woven fabrics.

Some auxiliary measures such as gas flow, reducing gas humidity, etc. can partially improve the uniformity of this discharge, but still cannot solve the problem of non-uniformity of filament discharge and damage to materials; and the wire-surface or wire-barrel electrode structure DBD is more likely to form uneven filamentary discharge, causing local burns or perforation of fibrous materials

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