道路车辆内空气 第12部分：测定汽车内饰用聚氯乙烯（PVC）或聚氨酯饰材雾化特性的试验方法

[中文适用范围]： 本文件规定了用于测定汽车内饰用聚氯乙烯(PVC)或聚氨酯纺织品的雾化特性的测试方法。 该方法也可适用于制造此类内饰材料或由这些材料制成的流体、糊状、粉末状或固体原材料。该方法也可适用于其他材料和成品。 这些程序适用于在测试条件限制范围内测量玻璃表面上的雾化凝结物。这些测试不能或无法准确测量以下情况： - 凝结物的表面张力低，导致早期聚结成薄透明膜； - 凝结物数量过多，导致液滴聚结并形成厚重的油性/透明膜（这种厚重的膜会产生错误读数）。 注：在此类情况下，使用重量法。 [外文原描述]： This document specifies test methods which are intended to determine the fogging characteristics of polyvinyl chloride (PVC) or polyurethane textiles that are used as trim materials in the interior of motor vehicles. The methods can also be applied to fluid, paste, powdered or solid raw materials which are the basis for such trim materials or from which the materials are manufactured. The methods can also be applied to other materials and finished products. The procedures are applicable to the measurement of fog condensate on glass surfaces within the limits of the test conditions. These tests do not or cannot measure accurately those cases in which: — the surface tension of the condensate is low, resulting in early coalescing into a thin transparent film; — the condensate is present in such a large quantity that the droplets coalesce and form a heavy oily/clear film (this heavy film gives false readings). NOTE In such cases, the gravimetric method is used.