文档介绍：Johnson Matthey standard test conditions for glass enamels: 玻璃釉料标准测试条件: Firing Conditions: 烧结条件: The firing conditions are assessed ona Centro t herm belt furnace, 3 zones, time in kiln ( including cooling ) 25 minutes. Set temperature of zones 1, 2 and 3 are mentioned as firing temperature glass enamel. These values should be used parative purposes only and do not refer to firing temperatures under production circumstances 。使用 Centrotherm 三段式带式炉,将样品在炉内烧 25 分钟(包括冷却时间)评估其烧结条件。区域 1, 2和 3 的设定温度为该样品釉料的烧结条件。其值仅用作参考,而不作为实际生产条件。 Typical specification: depending on enamel type, no general specification . 标准参数:无,取决于釉料类型。 Thermal Expansion: 热膨胀: The Thermal Expansion Coefficient(TEC) is determined by measuring the expansion of the glass enamel between 20 and 320℃. The sample is prepared by pressing glass enamel powder into a mould and fire until it pletely fused. T he sample is then measured on an Electrotech dilatometer. 通过测量釉料样品在 20到 320 度之间的膨胀情况确定其膨胀系数。样品准备:将玻璃釉料粉未压入一模具内,加热直至其完全熔化。然后利用膨胀仪测量样品。 Typical specification: Depending on enamel type, but close to the TEC of glass. 标准规格: 取决于釉料类型,但必须接近玻璃的膨胀系数。 Light Transmission: 透光率(遮盖力): The light transmission (UV and Visual) are determined using a Gretag D200 optical density meter. T he printed (wet layer thickness) is 25um. 使用 D200 型光学密度计测量透光率,湿膜厚度为 25um 样品确定该釉料的遮盖力。 Typical specification: Depending on enamel type, but usually< %. 标准规格:取决