ANSI/ASTM D6342:1998
聚氨酯生胶材料惯例:用近远红外光谱测量仪测定聚合物溶胶的羟基值

Practice for Polyurethane Raw Materials: Determining Hydroxyl Number of Polyols by Near Infrared (NIR) Spectroscopy


 

 

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标准号
ANSI/ASTM D6342:1998
发布
1998年
发布单位
美国国家标准学会
当前最新
ANSI/ASTM D6342:1998
 
 
适用范围
This standard covers a practice for the determination of hydroxyl numbers of polyols using NIR spectroscopy. Definitions, terms, and calibration techniques are described. Procedures for selecting samples, and collecting and treating data for developing NIR calibrations are outlined. Criteria for building, evaluating, and validating the NIR calibration model are also described. Finally, the procedure for sample handling, data gathering and evaluation are described. The implementation of this standard requires that the NIR spectrometer has been installed in compliance with the manufacturer's specifications. This 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 and health practices and determine the applicability of regulatory limitations prior to use. Note 1 -There is no equivalent or similar ISO standard.

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