GB/T 41768-2022 English PDF

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GB/T 41768-2022: Thermal insulating materials for building applications - Determination of organic content
Status: Valid

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Basic data

Standard ID: GB/T 41768-2022 (GB/T41768-2022)
Description (Translated English): Thermal insulating materials for building applications - Determination of organic content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q25
Classification of International Standard: 91.100.60
Word Count Estimation: 10,121
Date of Issue: 2022-10-14
Date of Implementation: 2022-10-12
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41768-2022: Thermal insulating materials for building applications - Determination of organic content

---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.
Thermal insulating materials for building applications -- Determination of organic content ICS 91.100.60 CCSQ25 National Standards of People's Republic of China Determination of Organic Content of Thermal Insulation Materials for Buildings (ISO 29771.2008, IDT) Published on 2022-10-12 2022-10-12 Implementation State Administration for Market Regulation Released by the National Standardization Administration

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 of Standardization Documents" drafted. This document is equivalent to ISO 29771.2008 "Determination of Organic Content of Thermal Insulation Materials for Buildings". This document adds a chapter "Normative References". The following minimal editorial changes have been made to this document. a) Incorporating the amendments to ISO 29771.2008/Amd.1.2014, the outer margins of the clauses involved are marked with vertical double Line (‖) is marked; b) Delete the note in "Scope". Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Building Materials Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Thermal Insulation Materials (SAC/TC191). This document was drafted by. Nanjing Fiberglass Research and Design Institute Co., Ltd., Anhui Zhongkunyuan New Building Materials Co., Ltd., Fujian Hongsheng Construction Group Co., Ltd., Hongcheng Kangjian (Suzhou) New Material Technology Co., Ltd., Fujian Sanjian Engineering Co., Ltd., Hunan Ronglan Intelligent Technology Co., Ltd., China Thermal Insulation and Energy-saving Materials Association, Dongfang Construction Group Co., Ltd., Xuzhou Hongda Civil Engineering Laboratory Co., Ltd., Shanghai Dayin Xisheng New Materials Co., Ltd., China 22nd Metallurgical Group Co., Ltd., and China Railway 25th Bureau Group Fourth Engineering Co., Ltd. The main drafters of this document. Qu Huili, Peng Cheng, Tao Wenzhu, Pan Yang, Zheng Bin, Yang Bin, Fang Weiran, Liu Feng, Li Yabing, Wang Zongmao, Wang Kaizhong, Ci Guoqiang and Mao Shengtai. Determination of Organic Content of Thermal Insulation Materials for Buildings

1 Scope

This document specifies the test instruments and test methods for the determination of the organic content of thermal insulation materials for buildings. This document is suitable for the determination of organic content in inorganic materials, such as thermal insulation materials with or without veneers containing a small amount of organic components. This document does not apply to the determination of the organic content of materials containing carbohydrates and/or carbonates and sulfates. This document does not apply to the determination of the organic content of products such as adhesives, veneers and coatings.

2 Normative references

There are no normative references in this document.

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 organiccontentorganiccontent woc The total amount of carbon compounds in a material or article. Note. The content of organic matter in materials or products is expressed in mass fraction.

4 Principles

The ratio of the difference between the mass of the dried sample and the mass of the sample burned at a specific temperature and a specific time to the mass of the sample is the sample. of organic matter content.

5 Instruments

5.1 Balance, the division value is 0.001g. 5.2 Electric heating blast drying oven, ventilated, constant temperature, controllable temperature at (105 ± 5) ℃ or specified in relevant product standards or technical specifications temperature. 5.3 Muffle furnace, ventilated and controllable temperature at (500±20)℃ or the temperature specified in relevant product standards or technical specifications. 5.4 The sample container, which is composed of inert material, should keep the quality unchanged during the test. Such as. porcelain crucible or aluminum tray, before the test will be tested Put the test container into the (500±20) ℃ muffle furnace and burn it at least once, and the burning time is not less than 2h. 5.5 Desiccant, a container that ensures the drying of the sample during the cooling process after burning.

6 Specimen Preparation

6.1 Sample selection The thickness of the specimen shall be the thickness of the product. If the product has veneer, coating, the veneer or coating and adhesive should be completely removed. A sample should ......

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