T/SASJL 0004-2021 Car interior material organic substance volatilization test
T/SASJL 0004-2021 Car interior material organic substance volatilization test
Basic Information
Scope
Scope: This document specifies the test method for the volatile organic compounds (VOCs) from non-metallic materials in automotive interiors. This document is applicable to interior components of passenger cars and after-market products. Main technical content: Samples are taken from the materials or components to be tested. If the component is composed of several different materials, the entire composite piece shall be tested. When the measured value exceeds the limit value, individual tests shall be conducted for each material, with metal parts being removed during the testing process. Samples shall be prepared from specified components and cut into small pieces weighing 10 mg to 25 mg. During sample preparation, the samples shall not be heated. For natural materials (cotton, wood, leather, wool), they shall be cut into small pieces weighing 10 mg to 25 mg before weighing. They shall be pre-dried in a desiccator containing anhydrous calcium chloride (using colorless silica gel as a basis for judging the failure of calcium chloride) for at least 24 hours at an ambient temperature of 23°C ± 2°C. The weight of the samples added to the headspace injection vial shall be determined according to the volume of the vial, which must be actually calibrated. For example, a 10 ml headspace vial shall contain 1.000 g ± 0.001 g of sample. At least three small vials of each material shall be prepared. A polytetrafluoroethylene gasket shall be added to the vial cap, then sealed with a capping machine and numbered. The prepared samples shall be placed in headspace vials and sealed with polytetrafluoroethylene caps. They shall be incubated at (120 ± 1)°C for 300 ± 5 minutes, and then directly injected into the automatic sampler for analysis. At least three parallel samples shall be analyzed for each sample. The average value obtained from at least three measurements of empty headspace vials shall be used to determine the results. During all analysis and testing processes, the volume