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GB/T 41935-2022 English PDF

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US$334.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 41935-2022: Plastics - Artificial weathering including acidic deposition
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41935-2022	334	Add to Cart	4 days	Plastics - Artificial weathering including acidic deposition	Valid

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Basic data

Standard ID: GB/T 41935-2022 (GB/T41935-2022)
Description (Translated English): Plastics - Artificial weathering including acidic deposition
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080.01
Word Count Estimation: 18,179
Date of Issue: 2022-12-30
Date of Implementation: 2023-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41935-2022: Plastics - Artificial weathering including acidic deposition

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 83.080.01 CCSG31 National Standards of People's Republic of China Artificial Weathering of Plastics Containing Acidic Deposition (ISO 29664.2010, IDT) Posted on 2022-12-30 2023-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. This document is equivalent to ISO 29664.2010 "Artificial Weathering of Plastics Containing Acidic Deposition". A chapter "Terms and Definitions" has been added to this document. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15). This document was drafted by. Guangzhou Institute of Quality Supervision and Testing, Shanghai Representative Office of Copano Experimental Equipment Co., Ltd., Zhonglan Chenguang Chengdu Testing Technology Co., Ltd., Qianshi Standard Technical Service (Suzhou) Co., Ltd., Abotuo (Fujian) New Material Co., Ltd., CGN Juner (Zhejiang) Jiang) New Material Co., Ltd., Dongguan Hebiao Technology Co., Ltd., and Jilin Provincial Product Quality Supervision and Inspection Institute. The main drafters of this document. Chen Weili, Li Xiaozeng, Zhang Heng, Zhang Yanjun, Lu Ning, Fu Ping, Wei Yuanfang, Zhou Guojian, Qu Xinghe, Li Shangyu, Guo Yingying.

Introduction

This document provides a method for evaluating the performance of plastics that can be adversely affected in heavily polluted outdoor applications. Acidic deposits have a significant effect on the photoaging properties of many plastics. In some cases, the cause of this effect is acidic deposits Attack on stabilizers or fillers such as calcium carbonate used in industrial polymers. Although acidic deposits also originate from noxious gases, their The damage mechanism is different from harmful gas erosion. Due to the constant change of industrial air pollution and the randomness of wind and cloud diffusion, acid rain is sporadic. different years The outdoor climate conditions vary greatly in different parts of China, especially acid rain. Therefore, only one season of experiments cannot obtain reliable outdoor exposure results. fruit. Laboratory tests can avoid these gases in the atmosphere by controlling all artificial weathering parameters including acid deposition. fluctuations in climate parameters. The existing artificial aging test methods for plastics generally do not consider the influence of acid rain in natural conditions. Artificial Weathering of Plastics Containing Acidic Deposition

1 Scope

This document describes artificial weathering test methods for plastics used in heavily polluted outdoor environments. This document is not intended for lifetime prediction of plastics used in heavily polluted outdoor environments. This document describes two different exposure methods and the choice of test method depends on the type of plastic product being evaluated. where method A is Spraying with strong acidic solution (pH 1.5) for a short period of time is suitable for the main damage form of surface degradation. Method B is a longer time and weaker acid solution Liquid spray (pH 3.5), suitable for situations where the acid can penetrate deeply into the product, such as geotextiles and related products. This document does not address the effects of specific chemicals such as pesticides.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. Note. GB/T 2918-2018 Standard environment for conditioning and testing of plastic specimens (ISO 291.2008, MOD) ISO 4582 Determination of color and property changes of plastics after exposure to solar radiation, natural climate or laboratory radiation sources after glass filtration Note. GB/T 15596-2021 Determination of color and property changes of plastics after glass filtration by solar radiation, natural climate or laboratory radiation sources (ISO 4582.2017, IDT) ISO 4892-1 Plastics Laboratory Light Exposure Test Methods Part 1.General (Plastics-Methodsofexposure Note. GB/T 16422.1-2019 Plastic Laboratory Light Exposure Test Methods Part 1.General (ISO 4892-1.2016, IDT) ISO 4892-2 Laboratory light source exposure test method for plastics Part 2.Xenon arc lamp (Plastics-Methodsof Note. GB/T 16422.2-2014 Plastic Laboratory Light Source Exposure Test Method Part 2.Xenon Arc Lamp (ISO 4892-2.2006, IDT) ISO 4892-3 Laboratory light source exposure test methods for plastics Part 3.Fluorescent ultraviolet lamps (Plastics-Methodsofex- Note. GB/T 16422.3-2014 Plastic laboratory light source exposure test methods Part 3.Fluorescent ultraviolet lamps (ISO 4892-3.2006, IDT)

3 Terms and Definitions

This document does not have terms and definitions that need to be defined.

4 principles

Evaluation of UV radiation, temperature, humidity, wetting and acids in weathering equipment according to ISO 4892-1, ISO 4892-2 and ISO 4892-3 ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 41935-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 41935-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 41935-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 41935-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.