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Research and development process of fabric electrostatic resistance tester

by:GESTER Instruments     2021-04-07
As a major exporter of textiles, my country exports a large number of anti-static fabrics and protective clothing. Therefore, the anti-static performance indicators of products must also comply with relevant international technical standards. In 2009, in order to further improve and upgrade the technical indicators of our national defense electrostatic clothing, the State Administration of Work Safety proposed to revise the national standard GB12014 for 'anti-static clothing' first released in 1989. After several years of attention to special textile fabrics, Shaanxi Yuanfeng has accumulated a wealth of theoretical and practical experience in domestic anti-static fabric research and product development, and its products have also accounted for a considerable market share. In view of this, Shaanxi Yuanfeng, which already has an absolute say in the field of anti-static, successfully participated in the revision of this standard. With the new 'Anti-static clothing' national standard GB12014-2009 and the new national standard GB/T22042-2008 (equivalent to European standard EN1149-1) and GB/T22043-2008 (equivalent to European standard EN1149-2) in line with international standards, comprehensive Implementation, domestic anti-static clothing requires the detection of resistance indicators of anti-static fabrics containing conductive fibers. However, my country has been referring to the technical guidelines of Japanese protective clothing for many years, using 'charge surface density' as the main indicator to evaluate the electrostatic properties of textiles, and generally adopts the method of measuring the charge density of fabric triboelectricity for testing. There is no provision for fabrics in the relevant test standards. Therefore, there are few domestic instruments involved in textile electrostatic resistance performance testing, and the applicable standards are also different. It is not suitable for the electrostatic performance testing of conductive fiber fabrics. At the same time, the current testing equipment such as 'LCK-305 fabric surface specific resistance tester' is only suitable for testing fabric surface resistivity with ring electrodes, and its test electrodes do not fully meet the requirements of the new standard. However, there is no instrument in China that can truly meet the requirements of the national standard GB12014-2009 for anti-static clothing and can be used to test the surface point-to-point resistance of anti-static fabrics. Therefore, it has become an urgent need for the implementation of the standard to develop a special testing instrument for testing the resistance performance of anti-static fabrics. After in-depth research and repeated demonstrations, the Standard Group decided to develop a multi-functional textile electrostatic resistance tester that can fully meet the test requirements of the new national standard GB12014-2009 for 'Anti-static Clothing' and can also be applied to other standards. It is a comprehensive new standard. Implement and provide new testing methods to meet the actual needs of testing instruments from the majority of domestic units engaged in the research, production and use of anti-static textile products. Success is not accidental. After the establishment of the project, Standard Group began intensive preparations. The company has given great support in terms of human, material and financial resources; arranged for professionals to conduct market and technical research; organized technical personnel related to mechanical and electrical and textile to conduct special discussions on key technologies, innovation points, technical routes, market analysis, and time schedules After reaching a consensus in terms of development costs, etc., a professional and capable project Ru0026D team began the development of textile electrostatic resistance testers. Zhao Xinping told reporters that the main difficulties encountered in the development process are the stability of test performance and the reliability of data. Stability means that the same fabric is tested repeatedly under the same conditions, and the test results are within the allowable range. Because textiles are different from metals or other non-metal materials, the surface resistance is affected by many factors, such as the fabric structure, environmental humidity, the type of conductive filament embedded, and the condition of the filament ends on the surface of the fabric, which have a considerable impact on the test results. To eliminate these influences, strict specifications on sample selection and testing operations are required. 'After repeated tests, we summarized and compiled operating specifications and instructions. We also conducted research on the optimization of the circuit of the tester and the selection of components to ensure that the tester is reliable. The data is stable but whether it is reliable or not requires comparison. We have used foreign instruments for comparison in relevant universities many times, and have obtained the approval and permission of the quality supervision and inspection management agency.' 'In order to meet the urgent needs of the market and complete the project on schedule without overtime, it can be said that most of the project team members have statutory rest days. Unpaid overtime. According to rough statistics, a total of more than 100 hours of overtime work. In other words, during the 9 months of Ru0026D time, half of our project team’s weekends and weekends are free, and there is no overtime pay. Everyone wants to complete the project and get the product as soon as possible. Come out.' Zhao Xinping continued, 'During the research and development period, in order to study the market and select high-quality components, the relevant personnel of the project team went to Shaanxi Province, Beijing, Shanghai, Tianjin, Hebei and other places for investigation and selection of materials; In order to explore the stability of instrument testing, the test personnel of the project team have done more than 300 test tests, and later conducted 3 technical exchanges and discussions at industry professional meetings to expand market influence.' With the joint efforts of the company, the textile electrostatic resistance tester was successfully developed.
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