Clean-Room Garment Fabrics Modification By Low-Temperature Plasma Grafting To Improve Anti-Static Property

Clean-room garment ,also called as anti-static and dust-free clothing ,was currently and widely used in medicine ,microelectronics ,precision instrument ,precision machinery ,food industry ,life engineering ,fine chemical industry .It was not a dust emission source ,and could prevent dust generated by the human skin from running out .In addition, it had a important role in preventing static electricity .At present ,enterprises were to improve its anti-static property by embedding conductive fibers basically ,which not only had good washfastness, but also adapted to low humidity environment.With scientific and technological development ,such as electric products ,which went toward miniaturization ,integrated direction ,so higher requirements for static electricity were put forward .If by increasing the amount of conductive fiber to deal with the problem, which would lift their costs greatly ,and affecting the appearance of garment. Although the way the fabric covered by anti-static agent may reduce the amount of frictional charge generation and promote charge leakage ,its washing fastness was poor ,its anti-static property depended on outside humidity level greatly. In view of this ,the subject tried to synthesize both approaches and learn from each other ,grafted hydrophilic monomer on the clean-room garment fabric by initiation of low-temperature plasma.The experiment processed the fabric by the two steps : 1) atmospheric pressure air plasma induced grafting;2)crosslinked reaction , to further improve its anti-static electricity.Grafted parts: 1) discussed how plasma treatment process parameters, monomer concentration, photoinitiator and crosslinker dosage affected the fabric friction voltage by the single factor analysis. The results showed that: With the extension of the plasma processing time, the processed fabric friction voltage dropped, but when more than 5min,which were on the rise; plate spacing had the same trend as plasma processing time on the impact of the proceeded fabric 's friction voltage; the mixture of air and argon plasma processing benefited the reduction of fabric better than single air plasma ,but the costs were higher, so air plasma was selected ;Degree of vacuum was up ,which was good to reduce the friction voltage of the processed fabric , but a relatively high requirements for equipment, which was not good to continuous production, therefore, this experiment selected the atmospheric pressure.2)adopted orthogonal experiment to analyze processing parameters and the results showed which was consistent with single-factor analysis, and the plasma treatment time on the fabric friction voltage of the greatest impact, cross-linking second, the smallest photoinitiator.3)With infrared and electron microscopy to characterize the grafted fabric. Results showed that: the success of the grafting monomer to the fibers of molecular chain, and discussed the principles of grafting.Cross-linked parts: it discussed how the monomer concentration, crosslinker dosage, cross-linking time and cross-linking temperature influenced the fabric friction voltage. The results showed that: cross-linking treatment could significantly reduced the friction voltage of the fabric;when monomer concentration of 50g / L, amount of 4% crosslinking agent, crosslinking temperature of 95℃, crosslinking time 6min, the processed fabric had the smallest friction voltage.Finally, it was studyed that how air relative humidity affected the anti-static property of grafted and cross-linked fabric,and washing fastness , whiteness and fracture performance.