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GB/T 32379-2015: Determination of mineral wool and its products formaldehyde emission
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Determination of mineral wool and its products formaldehyde emission
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GB/T 32379-2015
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Basic data | Standard ID | GB/T 32379-2015 (GB/T32379-2015) | | Description (Translated English) | Determination of mineral wool and its products formaldehyde emission | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q25 | | Classification of International Standard | 91.120.10 | | Word Count Estimation | 15,118 | | Date of Issue | 2015-12-31 | | Date of Implementation | 2016-11-01 | | Quoted Standard | GB/T 6682 | | Regulation (derived from) | State Standard Announcement 2015 No.43 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the following three kinds of determination of mineral wool and its products in the formaldehyde emission method: the dryer method; gas analysis, 1 cubic meters of climate box method. This standard is applicable to the determination of formaldehyde emission of mineral wool and its products such as rock wool, glass wool, slag cotton, aluminum silicate cotton and so on. It is also applicable to the determination of formaldehyde emission of mineral wool ceilings. | GB/T 32379-2015: Determination of mineral wool and its products formaldehyde emission---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.
Determination of mineral wool and its products formaldehyde emission
ICS 91.120.10
Q25
National Standards of People's Republic of China
Determination of mineral wool and its products formaldehyde emission
Issued on. 2015-12-31
2016-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Building Materials Federation.
This standard by the National Standardization Technical Committee heat insulating material (SAC/TC191) centralized.
This standard is drafted by. Nanjing Fiberglass Research and Design Institute Limited, the national glass fiber product quality supervision and inspection center.
The main drafters of this standard. Li Yong, Wang Ling, Wang Yumei, Wang Jiaqing, Li Zhipeng, Yang Yong, Zhou Qin, Liu Bing.
Determination of mineral wool and its products formaldehyde emission
1 Scope
This standard defines the following method for the determination of mineral wool and its products formaldehyde emission of three kinds.
--- Drier law;
--- Gas analysis;
--- 1 m3 climate chamber method.
This standard applies to mineral wool and its products - Determination of formaldehyde emission of rock wool, glass wool, slag wool, cotton, aluminum, etc., also applies to mineral
Cotton ceiling Determination of formaldehyde release.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Laboratory use specifications and test methods GB/T 6682 Analysis
3 dryer law
3.1 Principle
At the bottom of the dryer is placed crystallizing dish filled with distilled water, the upper part of the sample in a crystallizing dish, placed in a sealed environment 20 ℃, 24h after
Determination of the concentration of formaldehyde.
3.2 Reagents
The standard test water line with GB/T 6682 stipulated a water. Unless otherwise stated the following test, the dryer method used
Agents were of analytical grade and above.
a) sulfuric acid solution. 1mol/L;
b) hydrochloric acid. ρ = 1.19g/cm3;
c) ammonium acetate solution. Weigh 200g of ammonium acetate (C2H3O2NH4), dissolved in water transferred to 1000mL volumetric flask, dilute with water
Explanation to the mark, shake;
d) acetylacetone solution. 4mL/L;
e) iodine (I2 is) standard solution. 0.05mol/L, calibrated before use;
f) starch indicator. 10g/L, the time is now equipped with;
g) sodium thiosulfate (Na2S2O3) standard titration solution. 0.1mol/L, sodium thiosulfate weighed 26g in 500mL beaker, add
The freshly boiled and cooled water, completely dissolved, 0.05g of sodium carbonate (to prevent decomposition) and 0.01g mercuric iodide (preventing
Sp), and then diluted with freshly boiled and cooled water to 1L, filled in a brown bottle grinding mouth, shake and let stand 8d ~ 10d, filter
After calibration.
Calibration. Weigh in 120 ℃ drying to constant weight basis of potassium dichromate (K2CrO7) 0.10g ~ 0.15g, accurate to 0.1mg, placed 500mL
Iodine bottle, add 25mL water, shake to dissolve, plus 2g of potassium iodide and hydrochloric acid 5mL, immediately stuffed with cork, bottle liquid seal
Mouth, shake in dark place for 10min. Add water 150mL, sodium thiosulfate standard titration solution was titrated to be calibrated to the grass was green,
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