GB/T 15252-2014 Translated English of Chinese Standard. (GBT 15252-2014, GB/T15252-2014, GBT15252-2014): Plastics and ebonite - Determination of indentation hardness by means of a duronmeter (shore hardness) [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]This Standard specifies a method for the determination of the indentation hardness of plastics and ebonite by means of durometers of two types: type A is used for softer materials and type D for harder materials (see the Note to 8.2). The method permits measurement either of the initial indentation or of the indentation after a specified period of time, or both. |
Contents
3 | |
Introduction | 5 |
Scope | 6 |
Reagents and materials | 7 |
Sampling and sample preparation | 10 |
Expression of analysis results | 11 |
Common terms and phrases
100mL of zinc absorption unit accurate to 0.1mg acetate buffer solution acetic acid acetone ADD the description All-glass extraction device Beijing Brown burette buffer solution 4.4 Chemical reagent compounded and vulcanized compounded rubber conical flask connector degree of vulcanization Determination of sulfide directly cut distilled water document drafting organization edition Erlenmeyer flask extraction bottle filter paper Gas washing bottle GB/T Glycerin hydrochloric acid hydrogen sulfide iodine solution 4.6 Iodometric method length of less less than 1mm mass fraction milliliters mL Mixture of hydrochloric MODIFY the description nitrogen pipette Reaction and absorption RECORE the volume Separating funnel side length small particles sodium thiosulfate standard Soxhlet specified standard titration solution starch solution sulfide sulfur content surfactant solution test methods test report test samples thiosulfate at titration thiosulfate standard titration titration endpoint titration solution 4.7 unit of hydrogen volume of 25.00mL volume of sodium vulcanized rubber water to 1L zinc acetate buffer