ASTM D4942-20 Standard Test Methods for Water Pickup of Lithographic Printing Inks and Vehicles in a Laboratory Mixer

实验室混合器中平版印刷油墨和载体吸水率的标准试验方法

基本信息

标准号

ASTM D4942-20

标准状态

现行

发布单位或类别

美国-美国材料与试验协会(US-ASTM);

发布日期

实施日期

废止日期

CCS分类

ICS分类

87.080 涂料和颜料工业 - 墨水、油墨

研制信息

起草单位

- 展开▼

起草人

归口单位

D01.56

摘要

1.1These test methods cover two procedures for determining the amount of water picked up by lithographic printing inks in a laboratory mixer.1.2Test Method A covers single-point water pickup; Test Method B covers the rate of water pickup. Both test methods are applicable to any printing ink and vehicle intended for the lithographic printing process.1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ======3.1The lithographic printing process requires that some dampening solution be emulsified into the ink. These test methods provide a rapid means for determining water pickup under laboratory conditions. Test results may be useful for specification acceptance between the supplier and the customer.3.2In order that results be comparable, the tests must be run at the same temperature and with the same type and quantity of liquid added prior to mixing.3.3The emulsions obtained in these test methods are of larger particle size than those typically produced in printing nips. Because of these and other variables in the printing process, water pickup results do not by themselves predict lithographic printing performance. 1.1这些测试方法包括两个程序，用于确定实验室混合器中平版印刷油墨的吸水量。1.2试验方法A包括单点吸水；试验方法B包括吸水率。这两种测试方法均适用于任何用于平版印刷工艺的油墨和载体。1.3以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。1.4本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。1.5本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。====意义和用途======3.1平版印刷过程需要将一些润湿溶液乳化到油墨中。这些试验方法为在实验室条件下测定吸水率提供了快速手段。测试结果可能有助于供应商和客户之间的规范验收。3.2为了使结果具有可比性，必须在相同的温度下进行试验，并在混合前添加相同类型和数量的液体。3.3在这些试验方法中获得的乳液的粒径比通常在印刷钳口中产生的乳液的粒径大。由于印刷过程中的这些和其他变量，吸水结果本身并不能预测平版印刷性能。展开▼

关联标准

代替如下标准

1.ASTM D4942-11 Standard Test Methods for Water Pickup of Lithographic Printing Inks and Vehicles in a Laboratory Mixer (Withdrawn 2020)。

相似标准

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