GMW 3259-2011 霉菌抗性的测定.pdf

WORLDWIDE ENGINEERING Test Procedure GMW3259 STANDARDS Mildew Resistance 1 Scope Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This standard shall be used to determine the resistance to mildew growth and the associated odor characteristics of an automotive material when subjected to heat and humidity. 1.2 Foreword. Not applicable. 1.3 Applicability. This procedure is applicable for use on interior automotive materials such as carpets, upholstery, insulation, etc. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additional References. None. 3 Resources 3.1 Facilities. Not applicable. 3.2 Equipment. Air circulating oven capable of maintaining the required temperature to within ± 2 °C and suitable cutting tools for preparation of test specimens. 3.3 Test Vehicle/Test Piece. The test vessel shall not contain components that either emit or absorb dampness or odors. For this reason, only containers and covers made of glass are permissible. The lid shall be sealed by means of a plain ground joint. Sealing grease or sealing rings shall not be used. Any necessary support shelves or racks within the container shall be made of glass or glazed ceramics. The use of suitable sized desiccators is recommended. The lid must form a vapor seal with the container. The test container including the lid and the insert shall be cleaned carefully prior to each test ensuring that there is no od