收藏 分享(赏)

ASTM_D_1003_-_13.pdf

上传人:益****师 文档编号:184175 上传时间:2023-03-04 格式:PDF 页数:7 大小:160.33KB
下载 相关 举报
ASTM_D_1003_-_13.pdf_第1页
第1页 / 共7页
ASTM_D_1003_-_13.pdf_第2页
第2页 / 共7页
ASTM_D_1003_-_13.pdf_第3页
第3页 / 共7页
ASTM_D_1003_-_13.pdf_第4页
第4页 / 共7页
ASTM_D_1003_-_13.pdf_第5页
第5页 / 共7页
ASTM_D_1003_-_13.pdf_第6页
第6页 / 共7页
亲,该文档总共7页,到这儿已超出免费预览范围,如果喜欢就下载吧!
资源描述

1、Designation:D100313Standard Test Method forHaze and Luminous Transmittance of Transparent Plastics1This standard is issued under the fixed designation D1003;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A

2、number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.This test method replaces Method 3022 of Federal Test Method Stan

3、dard 406.1.Scope*1.1 This test method covers the evaluation of specificlight-transmitting and wide-angle-light-scattering properties ofplanar sections of materials such as essentially transparentplastic.Two procedures are provided for the measurement ofluminous transmittance and haze.Procedure A use

4、s a hazeme-ter as described in Section 5 and Procedure B uses a spectro-photometer as described in Section 8.Material having a hazevalue greater than 30%is considered diffusing and should betested in accordance with Practice E2387.1.2 The values stated in SI units are to be regarded asstandard.NOTE1

5、For greater discrimination among materials that scatter a highpercent of light within a narrow forward angle,such as is the case withabraded transparent plastics,adjust the hazemeter and perform measure-ments in accordance with Test Method D1044.1.3 This standard does not purport to address all of t

6、hesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE2This test method is not equivalent to ISO 13468-1 andISO/DIS 14782.

7、2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD1044 Test Method for Resistance of Transparent Plastics toSurface AbrasionE259 Practice for Preparation of Pressed Powder WhiteReflectance Factor Transfer Standards for

8、Hemisphericaland Bi-Directional GeometriesE284 Terminology of AppearanceE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE2387 Practice for Goniometric Optical Scatter Measure-ments2.2 ISO Standards:3ISO 13468-1 PlasticsDetermination of the Total Lumi-n

9、ous Transmittance of Transparent MaterialsISO/DIS 14782 PlasticsDetermination of Haze of Trans-parent Materials3.Terminology3.1 DefinitionsTerms applicable to this test method aredefined in Terminologies D883 and E284.3.2 Definitions of Terms Specific to This Standard:3.2.1 haze,nin transmission,the

10、 scattering of light by aspecimen responsible for the reduction in contrast of objectsviewed through it.The percent of transmitted light that isscattered so that its direction deviates more than a specifiedangle from the direction of the incident beam.3.2.1.1 DiscussionIn this test method,the specif

11、ied angleis 0.044 rad(2.5).3.2.2 luminous,adjweighted according to the spectralluminous efficiency function V()of the CIE(1987).3.2.3 luminous transmittance,nthe ratio of the luminousflux transmitted by a body to the flux incident upon it.4.Significance and Use4.1 Light that is scattered upon passin

12、g through a film orsheet of a material can produce a hazy or smoky field whenobjects are viewed through the material.Another effect can beveiling glare,as occurs in an automobile windshield whendriving into the sun.4.2 Although haze measurements are made most commonlyby the use of a hazemeter,a spec

13、trophotometer may be used,provided that it meets the geometric and spectral requirements1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.40 on Optical Properties.Current edition approved Nov.15,2013.Published November 2

14、013.Originallyapproved in 1949.Last previous edition approved in 2011 as D1003-111.DOI:10.1520/D1003-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Doc

15、ument Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshoho

16、cken,PA 19428-2959.United States1 of Section 5.The use of a spectrophotometer for haze mea-surement of plastics can provide valuable diagnostic data onthe origin of the haze,4and Procedure B is devoted to the useof a spectrophotometer.4.2.1 Procedure A(hazemeter)test values are normallyslightly higher and less variable than Procedure B(spectropho-tometer)test values.4.3 Regular luminous transmittance is obtained by placing aclear specimen at some distance from the entrance port of theintegrating

展开阅读全文
相关资源
猜你喜欢
相关搜索

当前位置:首页 > 专业资料 > 国外标准

copyright@ 2008-2023 wnwk.com网站版权所有

经营许可证编号:浙ICP备2024059924号-2