法国满天星《勤务秘书》,国产三级交换夫妻 电影,永久免费av无码国产,黑人巨大三根一起进在线观看,绝叫小说在线阅读,青春性事小说,小说:欲望,爱爱小说小说,幻想的发生1981满天星,国内少妇自拍第1页

老化測試設備

咨詢熱線

18566398802
首頁 > 標準大全 > ASTM D5215標準詳情
相關測試儀器

ASTM D5215

(該標準已經(jīng)被ASTM D5215 - 93(2012)替代)
  本頁面標準信息均來源于網(wǎng)絡收集,或由參與標準制定的供應商提供,只作為參考使用。我們愿意和您交流ASTM D5215標準細節(jié)信息或ASTM D5215測試方法,歡迎致電【18566398802】

ASTM D5215標準介紹

ASTM D5215是烯基地板用膠黏劑著色的儀器評定的試驗法,本標準是于1993年被采用,并且于2012年重新復審的:

1.1ASTM D5215描述準確測量由于接觸膠粘劑而發(fā)生在乙烯基地板染色程度的過程和方法。乙烯基地板樣品接觸膠粘劑和未接觸到粘合劑之間顏色差異可以從CIELAB顏色刻度測得。

1.2本試驗方法提供了可能出現(xiàn)的乙烯基地板接觸膠粘劑染色過程中的視覺評價。

ASTM D5215英文簡介

Significance and Use

Certain substances in adhesives may cause discoloration of vinyl flooring. This test method provides a means of measuring the discolorations that may occur in the vinyl as a result of contact with these adhesives. Vinyl flooring specimens, either contacting or not contacting the adhesive, are exposed to heat and UVA light to accelerate discoloration. By means of colorimeter or spectrophotometer, color differences between exposed specimens are accurately measured. Therefore, instrumental evaluation rather than personal subjective evaluation is used to determine the amount of discoloration an adhesive may produce in vinyl flooring. This test method does not attempt to simulate or duplicate the heat and sunlight conditions that may impact vinyl floor coverings while in service.

1. Scope

1.1 This test method describes procedures and instrumentation for accurately measuring the degree of staining that may occur in vinyl flooring as a result of its contact with adhesives. Measured color differences between vinyl flooring specimens contacting the adhesive and not contacting the adhesive are expressed in the CIELAB Color-Scale System.

1.2 This test method provides for visual evaluation of staining which may occur when vinyl flooring contacts adhesives.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 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.

2. Referenced Documents

ASTM Standards

D907 Terminology of Adhesives

D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates

E1347 Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry

E1349 Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45:0 or 0:45) Geometry

G53 Practice for Operating Light-and Water-Exposure Apparatus (Fluorescent UV-Condensation Type) for Exposure of Nonmetallic Materials.

溫馨提醒:本ASTM D5215可能存在更新的版本,建議尋找ASTM D5215的發(fā)行商確認。