国际标准化组织 5630-6:2009 是 ISO 的一部分 5630 标准, 它规定了纸和纸板材料加速老化的方法. 部分 6 标准的, 标题为 “暴露于大气污染,” 描述了将纸张和纸板样品暴露于大气污染的影响下的过程，以模拟长期暴露于环境污染物的影响.

本标准的目的是评估纸和纸板材料在大气污染情况下的耐久性. This is important for applications that require long-term stability, such as file storage.

The standard Outlines a test method that involves exposing paper and cardboard samples to a controlled atmosphere of sulfur dioxide (二氧化硫) gas at a certain concentration and temperature. The specimen is exposed to the gas for a specified period of time. The standard specifies the test conditions and equipment required to perform the test.

接触后, the samples are evaluated for various properties such as color, 亮度, and intensity. The results of the tests can be used to compare the durability of different paper and cardboard materials and to predict their long-term stability when exposed to atmospheric pollution.

国际标准化组织 5630-6-2009 “纸和纸板的加速老化 – 部分 6 暴露于大气污染”

综上所述, 国际标准化组织 5630-6:2009 provides a standardized method for testing the effects of atmospheric pollution on paper and paperboard materials, which is important for applications such as archival storage, printing and packaging.

介绍
国际标准化组织 (国际标准化组织) 是国家标准机构的全球联盟 (ISO成员机构). 国际标准的制定通常通过ISO技术委员会进行. 每个对已成立技术委员会的主题感兴趣的成员机构都有权在该委员会中派代表参加. 与 ISO 联络的国际政府和非政府组织也参与了这项工作. ISO 与国际电工委员会密切合作 (国际电工委员会) 关于电气标准化的所有问题.

国际标准是按照第 2 部分给出的规则起草的。 2 ISO/IEC 指令的.

技术委员会的主要任务是制定国际标准. 技术委员会通过的国际标准草案将分发给各成员机构进行投票. 作为国际标准的出版至少需要获得批准 75% 成员机构数量.

国际标准化组织 5630-6-2009 “纸和纸板的加速老化 – 部分 6 暴露于大气污染”

请注意，本文档的某些元素可能受专利权保护. ISO 不负责识别任何或所有此类专利.

国际标准化组织 5630-6 由 ISO/TC 技术委员会编写 6 (纸, 纸板和纸浆), SC 2 Sub-committee (纸和纸板的测试方法和质量规范).

国际标准化组织 5630 consists of the following parts under the general heading “纸和纸板 – Accelerated Ageing” :

– 部分 1: Dry heat treatment at 105 ℃

– 部分 3: Moist heat treatment at 80 °C 和 65 % 相对湿度

– 部分 4: Dry heat treatment at 120 或者 150 ℃

– 部分 5: Exposure to temperatures of 100 ℃

– 部分 6: 暴露于大气污染 (nitrogen dioxide)

Note Part 2: The wet heat treatment at 90°C and 25% relative humidity was eliminated in 1992.

介绍
Paper or cardboard exposed to a harsh environment, such as some type of radiation, high temperatures or chemical contaminants, in a matter of hours can provide information about the natural changes that may occur in the material over several years.

国际标准化组织 5630-6-2009 “纸和纸板的加速老化 – 部分 6 暴露于大气污染”

This test method for accelerating aging by exposing paper to high concentrations of nitrogen dioxide is based on a method developed by ASTM [1] following an extensive research program. In the program, 15 printing and writing papers were tested, representing multiple paper types (acidic and alkaline, lignin-containing and lignin-free, and papers with and without alkaline reserves (such as calcium carbonate). This method proved to be the most relevant for judging the effect of atmospheric pollution gases on the long-term mechanical strength and optical stability of such papers. In order to fully understand the stability of paper against long-term natural aging effects, a combination of accelerated aging test methods is used.

1 范围
ISO的这一部分 5630 specifies a method to accelerate the ageing of printing and writing paper by exposure to nitrogen dioxide gas and to assess the effects on mechanical and optical properties to predict the stability of long-term natural ageing that occurs as a result of exposure to polluted air. It is suitable for all cellulose-based printing and writing paper, including coated paper and filler paper.

国际标准化组织 5630-6-2009 “纸和纸板的加速老化 – 部分 6 暴露于大气污染”

2 规范性引用文件
以下参考文件对于本文档的使用有困难或缺乏. 对于注明日期的参考文献, 仅引用的版本适用. 对于未注明日期的参考文献, 新版本的参考 (包括任何修订) 适用.

国际标准化组织 186, 纸和纸板 – 抽样以确定平均质量

国际标准化组织 187, 纸, 纸板和纸浆 – 用于调节和测试的标准大气以及用于监测样品大气和调节的程序

国际标准化组织 5626, 纸 – Determination of folding durability

国际标准化组织 5631-1, 纸和纸板 – Determination of colour by diffuse reflectance – 部分 1: indoor daylight conditions (C / 2°)