油墨测试项目.doc

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 on a Centrotherm 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 for comparative 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 is completely fused. The 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. The 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 0.1%. 标准规格：取决于釉料类型，但通常小于0.1%. Scratch resistance: 耐刮度（附着力）： Scratch resistance is tested using a Braive instruments sclerometer with a tungsten carbide tip. It features a set of calibrated springs with different strengths. The standard test is performed at 16N, guaranteed is better than 15N. Below a picture of the sclerometer in use at Johnson Matthey. 利用带碳钨合金头的硬度计测量附着力。该硬度计有一系列不同强度的弹簧。测试标准为以16N的力作用于样品上，通常应保证其作用力不小于15N。 Typical specification: 15N 标准：15N. Fineness of paste: 油墨细度： The fineness of the paste is determined using a Hegmann gauge. See the picture below for the equipment used at Johnson Matthey b.v. to dete