GB/T 41935-2022 (English Version) PDF

Standard No.: GB/T 41935-2022
Language: Chinese, Available in English version
Release Date: 2022
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 41935-2022

Scope: This document describes test methods for artificial weathering of plastics used in heavily polluted outdoor environments. This document does not apply to life predictions for plastics used in heavily polluted outdoor environments. This document describes two different exposure methods, with the test method chosen depending on the type of plastic product being evaluated. Method A is a short-term spraying of strong acidic solution (5), which is suitable for damage forms dominated by surface degradation. Method B is a longer period of weakly acidic pH 1. solution spraying (5), which is suitable for situations where the acid can penetrate deeply into the product, such as geotextiles and related products. pH3. This document does not cover the effects of special chemicals (such as pesticides).

GB/T 41935-2022 Referenced Document

ISO 291 Plastics - Standard atmospheres for conditioning and testing
ISO 4582 Plastics — Determination of changes in colour and variations in properties after exposure to glass-filtered solar radiation, natural weathering or laboratory radiation sources
ISO 4892-1 Plastics - Methods of exposure to laboratory light sources - Part 1: General guidance