Standard No.:	GB/T 39693.8-2022
English Name:	Rubber,vulcanized or thermoplastic—Determination of hardness—Part 8:Apparent hardness of rubber-covered rollers by Pusey and Jones method
Chinese Name:	硫化橡胶或热塑性橡胶 硬度的测定 第8部分：赵氏硬度（P&J)法测定胶辊的表观硬度
Chinese Classification:	G47    Other rubber products
Professional Classification:	GB    National Standard
ICS Classification:	83.140.99 83.140.99    Other rubber and plastics products 83.140.99
Issued by:	SAMR; SAC
Issued on:	2022-12-30
Implemented on:	2023-4-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	150.00
Delivery:	via email in 1~3 business day

本文件描述了硫化橡胶或热塑性橡胶包覆辊表观硬度[以赵氏(P&J)压痕值表示]的测定方法。
赵氏(P&J)硬度计用于测量在额定压力作用下压头压入橡胶表面形成的压痕深度。压痕值与国际橡胶硬度法ISO 48-2[1]的测量值不同，在该方法中，紧邻压头的橡胶会被预先压缩。赵氏(P&J)压痕值是一种反向测量硬度值，即橡胶越硬，赵氏(P&J)压痕值越低。