EN ISO 489-1999 塑料.反射指数的测定 ISO 489-1999.pdf

标准号：EN ISO 489-1999
实施状态：现行
中文名称：塑料.反射指数的测定 ISO 489-1999
英文名称：Plastics - Determination of Refractive Index
发布日期：1999-04-01
代替标准：prEN ISO 489-1998
采用标准：DIN EN ISO 489-1999,IDT;BS EN ISO 489-1999,IDT;NF T51-064-1999,IDT;ISO 489-1999,IDT;SN EN ISO 489-1999,IDT;OENORM EN ISO 489-1999,IDTN-EN ISO 489-2003,IDT;SS-EN ISO 489-1999,IDT;UNE-EN ISO 489-2000,IDT;TS 785 EN ISO 489-2004,IDT;UNI EN ISO 489:2001-2001,IDT;STN EN ISO 489-2001,IDT;CSN EN ISO 489-2000,IDT;DS/EN ISO 489-1999,IDT;NEN-EN-ISO 489:1999 en-1999,IDT;SFS-EN ISO 489:en-2001,IDT
标准简介：This International Standard specifies two test methods for determiningThe refractive index of plastics, namely:一Method A:a refractometric method for measuringThe refraor film, by means of a refractometer. It is applicable not oopaque materials but also to anisotropic materials.Therequired. It is not applicable to powdered or granulated mat                                                        ctive index of moulded parts, cast or extruded sheet                                                        nly to isotropic transparent, translucent, coloured or                            meeria沙od‘,recommended when great accuracy is一Method B:an immersion method (making use of the Becke line phenomenon) for determiningThe refractive    index of powdered or granulated transparent materials by means of a microscope. Monochromatic light should,in  nnnnr7l     Lw  ..nww1  1...  .....:J  J:__ . __ " _ .     _ ee          }.                              _method A. It is applicable tonor to anisotropic materials.NOTE 1The refractive index is a fundamentalidentification of materials and forThe design ofindication of transition points of materials.property which can be used for checking purity and composition, forTheoptical parts.The change in refractive index with temperature may give anNOTE 2The accuracy of method B is approximatelyThemethod with extreme care (see clause 7).same as that of method A when an experienced operator usesThe
文件格式：PDF
文件大小：709.14KB
文件页数：20
（以上信息更新时间为：2019-11-29）



文档语言及版本参照下方封面截图：