GB/T 20028-2005 (English Version) PDF

Standard No.: GB/T 20028-2005
Language: Chinese, Available in English version
Release Date: 2005
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 20028-2005

Scope: This standard expounds the principles and procedures for calculating the service life and maximum service temperature of vulcanized rubber or thermoplastic rubber using the Arrhenius diagram. This standard applies to different test methods for rubber, but when testing rubber for stress or strain (creep, relaxation, etc.), it may not be easy to separate the physical (or viscoelastic) changes of the material from the chemical changes. In this case, the Arrhenius equation is no longer the only suitable model, and the WLF (Willams, Landel, Ferry) equation may be more suitable to express the function of material performance change and time.

GB/T 20028-2005 Referenced Document

GB/T 2941 Rubber. General procedures for preparing and conditioning test pieces for physical test methods*， 2006-09-01 Update
GB/T 3512 Rubber, vulcanized or thermoplastic.Accelerated ageing and heat resistance tests.Air-oven method*， 2014-12-22 Update
GB/T 7142 Determination of time-temperature limits for plasties after prolonged exposure to heat

2005 GB/T 20028-2005 Rubber,vulcanized or thermoplastic.Estimation of life-time and maximum temperature of use from an Arrhenius plot