AATCC 134-2006 Electrostatic Propensity of Carpets.
2.1 Build-up of a static charge on a person walking across a carpet under conditions of low atmospheric humidity has been recognized as a classic example of the triboelectric effect, whereby a separation of electrical charges is produced when two dissimilar surfaces in contact are separated. The magnitude of the charge separation and the resultant voltage on the person vary under the influ ence of many factors. The most important factors for the purpose of this test are: (a) the chemical and physical charac- teristics of the two materials brought into contact, rubbed and separated; i.e., the shoe soles and carpet; (b) the surface contamination on one or both; (c) the nature of the rubbing and/or separation, i.e., the method of walk, including the height of the shoe above the carpet; and (d) the ambient conditions (especially the relative humidity).
2.2 A carpet brought to moisture equilibrium at controlled atmospheric conditions is walked on by a test operator in a specified manner with specified shoe soles and heels. The static charge, which builds up on the operator, is monitored continuously by a voltage indicator with a recorder.
2.3 The maximum voltage, generated on the person by the accumulated charge, measured during the test period is defined as the static-generating propensity of the carpet under the conditions of the test.
3.1 electrostatic propensity, n.—the ability to produce and accumulate an electrostatic charge. NOTE: For the purposes of this test, it is the resultant voltage on a person walking across the surface of a textile floor covering under specified conditions, which has been caused by the accumulation of an electrostatic charge on the body.
4. Safety Precautions NOTE: These safety precautions are for information purposes only. The precautions are ancillary to the testing procedures and are not intended to be all inclusive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufacturers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommenda- tions. All OSHA standards and rules must also be consulted and followed.
4.1 Good laboratory practices should be followed. Wear safety glasses in all laboratory areas.
4.2 All chemicals should be handled with care.
4.3 Isopropyl alcohol is a flammable liquid and should be stored in the laboratory only in small containers away from heat, open flames and sparks.
4.4 Manufacturer’s safety recommendations should be followed when operating laboratory testing equipment.
4.5 Ground all electrical equipment.
4.6 High-voltage sources should have an internal impedance of not less than 1 × 10 8 ohm (or the maximum output current limited to 1 milliampere) to avoid shock haz- ard in calibration of the detection system.AATCC 134 pdf download.