Solution of friction coefficient (smoothness) test of medical gloves

Abstract: friction coefficient is an important performance index of medical gloves, which is related to the convenience and antiskid of gloves In this paper, mxd-02 friction coefficient instrument developed by Jinan Languang mechanical and Electrical Technology Co., Ltd is used to test the friction coefficient of medical gloves, and the parameters, application scope and test process of the equipment are briefly described, so as to provide reference for enterprises to solve the problem of how to monitor the friction coefficient of medical gloves Key words: friction coefficient, antiskid, convenience, medical gloves, latex gloves, rubber gloves, surgical gloves, inspection gloves, friction coefficient instrument 1, significance medical gloves have the functions of clean and sanitary, preventing fingers from being cut, preventing bacteria from cross infection, etc., which are indispensable supplies in the field of medical treatment and health The friction coefficient of the inner and outer surfaces of medical gloves should have different requirements, and the inner surface should have a lower friction coefficient to meet the requirements of easy wearing of gloves, so as to prevent the inner surfaces of gloves from sticking together when contacting each other and not easy to open; the friction coefficient of the outer surface should be higher to prevent the medical staff from slipping when holding the medical equipment and not holding the equipment firmly Corresponding operation Therefore, to strengthen the monitoring of friction coefficient of medical gloves is an important factor to ensure the practicality of gloves 2 At present, medical gloves are divided into two categories: surgical gloves and inspection gloves The performance requirements of surgical gloves are higher According to different materials, medical gloves are mainly divided into latex gloves and rubber gloves At present, most of domestic medical gloves are latex gloves The test of friction coefficient of medical gloves can refer to GB 10006-1988 test method for friction coefficient of plastic film and sheet, which is applicable to the test of friction coefficient of non sticky plastic film and sheet with thickness less than 0.2mm Fig 1 medical latex, rubber gloves 3 Test sample a brand of surgical gloves This paper mainly tests the friction coefficient of the inner surface of the sample 4 This paper uses Labthink blue light mxd-02 friction coefficient instrument to test the friction coefficient of surgical gloves Fig 2 test principle of mxd-02 friction coefficient instrument 4.1 the basic basis of this test is the calculation formula of friction coefficient - the ratio of friction force to the pressure perpendicular to the contact surface The equipment applies a certain vertical pressure to the sample through a known weight, and then the static friction coefficient and dynamic friction coefficient of the sample can be obtained by testing the Zui large static friction and sliding friction produced in the process of relative static to relative sliding of the sample 4.2 equipment parameters equipment load range is 0 ~ 5N, test accuracy is 0.5 level The stroke of the equipment can be divided into 70 mm and 150 mm The standard slider of the device has a mass of 200g, and other quality sliders can be customized according to the needs of users or relevant standards The test speed of the equipment is 100 mm / min or 150 mm / min, and other test speeds can be adjusted as required The dynamic and static friction coefficients of the sample can be measured at the same time in one test The test table and test slider of the equipment are demagnetized and remanence tested, which effectively reduces the test error of the system The professional software can automatically carry out the statistical analysis of single and group test results, reanalysis of original data, superposition and comparison of group curves, and display the test results to customers in a variety of reporting modes intuitively and quickly Support Lystem TM laboratory data sharing system, and manage test reports and test results in a unified way 4.3 scope of use (1) This equipment is mainly used to measure the static friction coefficient and dynamic friction coefficient of plastic film and sheet, aluminum foil, aluminum plastic composite film, metal material composite belt for communication cable and optical cable, metal products, rubber, paper, cardboard, woven bag, textile, non-woven fabric, conveyor belt, wood, coating, brake pad, wiper, shoe material, tire and other materials when sliding, and also can be used for cosmetics , eye drops and other daily chemical products (2) the equipment meets a number of national and international standards, such as ISO 8295, GB 10006, ASTM d1894, TAPPI T816, etc 5 During the test (1) three specimens of 8 cm × 20 cm and 100 mm × 63 mm were cut from the sample surface to form three groups of samples Do not touch the test surface of the specimen by hand during cutting (2) take one 8 cm × 20 cm sample, the inner surface of the sample is upward, and fix it on the horizontal test bench Take a sample of 100 mm × 63 mm, the inner surface of the sample is exposed (that is, the outer surface is in direct contact with the slider), and fix it on the slider The test surface of the specimen shall not be touched by hand during fixing of the specimen (3) place the sliding block on the sample of the horizontal test bench without impact to ensure that the test system of the equipment is free of force, and the test direction of the sample is parallel to the moving direction of the sliding block (4) set the test speed, test stroke and other parameter information, click the test option, and the test starts After the two samples are stationary for 15 s, the relative movement starts (5) the equipment automatically records the change of force value during the test, and calculates the static friction coefficient and dynamic friction coefficient of the sample (6) repeat (2) ~ (5) until three groups of samples are tested 6 The results showed that the dynamic and static friction coefficients between the inner surface and the inner surface were 0.291 (static), 0.265 (dynamic), 0.283 (static), 0.257 (dynamic), 0.286 (static), 0.253 (dynamic), respectively 7 Conclusion mxd-02 friction coefficient tester is a professional testing equipment for testing the smoothness of materials It has the advantages of high testing accuracy and good repeatability of testing results Through monitoring the friction coefficient of medical gloves, it can ensure the convenience and practicability of gloves in use In addition to the friction coefficient tester, Labthink Languang can also provide you with tensile testing machine for glove tensile performance test, oxygen transmittance tester, water vapor transmittance tester, heat sealing performance tester and other testing equipment for film or container samples for packaging of other drugs and medical devices For specific information about the equipment, you can visit Jinan Languang company or call directly for consultation The more you understand, the more you trust! Jinan Languang Electromechanical Technology Co., Ltd is willing to take this opportunity to enhance technical exchanges and cooperation with enterprises and institutions in the industry Copyright notice: All rights reserved Jinan Languang mechanical and Electrical Technology Co., Ltd no reprint without permission!