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The triboelectric charge tester for medical clothing is used to test the electrostatic properties of textile products, such as protective clothing, after they have been charged in the form of friction under laboratory conditions. QINSUN is the manufacturer, and welcome customers who need Call in time.
Advantages and features:
1. The company has been engaged in instrument testing for more than ten years and has a after-sales service team;
> 2. Can be different
3. Spare parts are available to solve the problem of long delivery time for spare parts ordering;
4. Provide outsourced maintenance services;
5. Long-term supply of various commonly used test instruments;
6. Keep up with the update of industry standards and care for test instruments that meet the new standards in time.
In addition, there are 6 test methods introduced in IOS 12703-1991 for the medical clothing friction electrification tester, which mainly introduces As follows:
Method A (half-life method) :
Use +10kV high voltage to discharge the sample on the rotating metal platform for 30 seconds and measure the half-life (s) of the induced voltage. FZ/T 01042 Textile Materials - Electrostatic Properties - Determination of Half-Life of electrostatic voltage is equal to *. This method can be used to evaluate the electrostatic attenuation characteristics of substances, but the contact state of the sample with conductive fibers on the grounded metal platform cannot be checked. When the conductive fibers are in good contact with the platform, the charge leaks quickly, and when the contact is poor, the damping rate is the same as that of ordinary textiles. Similarly, the test results of the sameThe sample is quite different under different placement conditions, so it is not suitable for the evaluation of fabrics containing conductive fibers.
Method C (Charge Area Density Method):
After the sample is rubbed in a specific way under specified conditions with nylon standard cloth, the charge is measured with a Faraday cylinder. to the sample size Obtain the surface charge density (µC/m2). Besides minor changes in friction cloth specifications, sample pre-treatment, friction bar diameter, friction times, etc., FZ/T 01069 Method for determining the friction charge density of substances is the same. The charge surface density method is suitable for evaluating the difficulty of various fabrics, including fabrics containing conductive fibers, to build up static electricity through friction. The measured results are closely related to the degree of dust absorption of the sample. Since the frictional electrification between the sample and the standard cloth is realized by manual operation, the consist of the test conditions, the accuracy and repeatability of the test results are easily affected by the operating methods.
Method D (clothing charging method when undressing):
After rubbing the work clothes and chemical fiber underwear in a specific way, take off the work clothes and put them in a Faraday cage, and obtain the charge (µC/piece). The test object of this method is limited to clothing, and the material of underwear is not specified, and the rubbing method is difficult to be consistent and not comparable.
Method E (friction charge method for workwear):
Use a drum dryer (45 RPM or greater) lined with nylon or polypropylene standard cloth to triboelectrify the workwear sample for 15 minutes, place in a Faraday cup to measure the electrical charge of the coverall (µC/piece). This method essentially corresponds to the method of measuring the loadwhich is specified in the product standard IOS 12014 anti-static workwear and is suitable for the friction load test of clothing; the technical essence is also consistent with the C method (charge areal density method).
F method (inter-electrode equivalent resistance method):
The tissue sample is in good contact with the grounded conductive rubber plate, and the special electrodes are clamped on the sample according to the specified distance and pressure, Apply a voltage after short circuit discharge, and get the equivalent resistance between electrodes (Ω) according to the current value. When the fabric containing conductive fibers comes into contact with the conductive rubber sheet, it causes a short circuit between the local areas where the conductive fibers are exposed, and it is difficult to measure the actual equivalent resistance. FZ/T 01044 Electrostatic properties of textile materials - Determination of fiber leakage resistanceand other resistance test methods mainly detect fibers.
