GB/T 1685.2-2019: Rubber, vulcanized or thermoplastic -- Determination of stress relaxation in compression -- Part 2: Testing with temperature cycling

Delivery: 9 seconds. Download (and Email) true-PDF + Invoice.
Get Quotation: Click GB/T 1685.2-2019 (Self-service in 1-minute)
Newer / historical versions: GB/T 1685.2-2019

Preview True-PDF

Scope

This Part of GB/T 1685 specifies two methods for determining the decrease in
compressive force of vulcanized or thermoplastic rubber, that has been compressed to
and maintained at a constant strain, under temperature cycling conditions.
Method A. The test temperature alternates between high and low temperatures at set
intervals; the rubber material's aging resistance is evaluated at the high-temperature
phase, while its sealing performance is evaluated at the low-temperature phase.
Method B. The test temperature alternates continuously between high and low
temperatures, to induce internal thermal stress within the rubber material.
The compressive force is measured, using a continuous monitoring system.
Specimens may be cylindrical or annular (ring-shaped). Results vary depending on the
different shape and size of the specimens; test results are comparable only when
obtained from specimens of the same shape and size.
Annular specimens are particularly suitable for determining stress relaxation in liquid
environments.

Basic Data

Standard ID	GB/T 1685.2-2019 (GB/T1685.2-2019)
Description (Translated English)	Rubber, vulcanized or thermoplastic -- Determination of stress relaxation in compression -- Part 2: Testing with temperature cycling
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G40
Classification of International Standard	83.060
Word Count Estimation	14,164
Date of Issue	2019-12-10
Date of Implementation	2020-11-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration