GB/T 31957-2015 English PDF

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GB/T 31957-2015: Test method of chemical resistance of glass fibers
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31957-2015	129	Add to Cart	3 days	Test method of chemical resistance of glass fibers	Valid

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Basic data

Standard ID: GB/T 31957-2015 (GB/T31957-2015)
Description (Translated English): Test method of chemical resistance of glass fibers
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q36
Classification of International Standard: 59.100.10
Word Count Estimation: 6,637
Date of Issue: 2015-09-11
Date of Implementation: 2016-08-01
Quoted Standard: GB/T 1033.1; GB/T 6682; GB/T 7690.5; GB/T 11415
Regulation (derived from): National Standard Announcement 2015 No.25
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 method of analysis of two glass fiber chemical resistance: Method A: the mass loss rate method; Method B: Method of mass loss per unit surface area. This Standard applies to the analysis alkali, alkali, alkali-resistant, high-strength glass fiber and other chemical resistance properties, and can also refer to the use of other fibers.

GB/T 31957-2015: Test method of chemical resistance of glass fibers

---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.
Test method of chemical resistance of glass fibers ICS 59.100.10 Q36 National Standards of People's Republic of China Media analysis fiberglass chemical resistance Issued on. 2015-09-11 2016-08-01 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 fiberglass (SAC/TC245) centralized. This standard was drafted. National Glass Fiber Product Quality Supervision and Inspection Center, Changzhou Tianma Group Co., Jushi Group Co. Division of Nanjing Fiberglass Research and Design Institute Limited. The main drafters of this standard. Li Yong, Zhou Qin, Wang Yumei, Liu Bing, Yang Yong, Wang Ling, Li Zhipeng. Media analysis fiberglass chemical resistance WARNING --- This standard is not intended to address all the safety problems associated with the use of the product. Standard responsibility of the user to establish appropriate safety Full and health guidelines, and prior to use to determine whether to apply to certain regulations limit entries.

1 Scope

This standard specifies two methods of analyzing chemical resistance of glass fiber. --- Method A. the mass loss rate method; --- Method B. Method of mass loss per unit surface area. This standard applies to the analysis alkali, alkali, alkali-resistant, high-strength glass fiber and other chemical resistance properties, and other fibers can also refer to use.

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. 1033.1 Non-plastic foam density measurement GB/T Part 1. Immersion method, liquid pyknometer method and titration method Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 7690.5 Test method for yarns Part 5. Determination of fiber diameter glass GB/T 11415 Laboratory sintered (porous) filter pore size, grade and grades

3 General

3.1 Reagent water This standard reagents used were of analytical grade and above, are in line with GB/T 6682 and two water above water requirements. 3.2 the number of trials By the same operator in the same test measured less than 2 times, the arithmetic mean as the test result. 3.3 Substance constant weight Before and after two poor quality should not exceed 0.2mg.

4 Reagents

4.1 Sodium hydroxide, solid. 4.2 acetone. 4.3 ethanol. Hydrochloric acid 4.4, ρ = 1.19g/mL. Sulfuric acid 4.5, ρ = 1.83g/mL. 4.6 HCl wash, 2g/L. Weigh 5.4g ~ 5.9g of hydrochloric acid (4.4), diluted with water to 1L. ......

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