GB/T 4738.1-1984Test method for acid, alkaline resistance for ceramic materials of daily use (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

This standard replaces GB/T 4738.1-1984 "ceramic materials of daily acid and alkali performance measurement method (block method)" and GB/T 4738.2-1984 "ceramic materials of daily acid and alkali performance measurement method (particle method)." This standard GB/T 4738.2-1984 based, integrated Part of GB/T 4738.1-1984, compared with GB/T 4738.2-1984 main technical changes are as follows.

--- Modify the scope of the standard (see Chapter 1);

--- Modify the standard principle (see Chapter 3, Chapter 1, 1984 edition);

--- Modifies the concentrated sulfuric acid is sulfuric acid solution (10%) (see 41, 1984, version 3.1.);

--- Modify the sample filtering (see 58, 1984 version 2.9.);

--- Modify the sample after etching using a cleaning liquid indicator (see 751, 752, 1984 edition of 5.5.1,5.5.2...);

--- Modified after etching sample drying apparatus (see 7.6, 1984 edition 5.6).

The standard proposed by China National Light Industry Council.

This standard by the national daily-use ceramics Standardization Technical Committee (SAC/TC405) centralized.

This standard was drafted. People's Republic of China Exit Inspection and Quarantine Chaozhou, Guangdong Fengxi Ceramics Industry Research Institute, Shandong Zibo Huaguangtaoci technological and cultural Ltd. of Guangdong Stone Group Co., ceramics Chaozhou Rongchang Industrial Co., Ltd., Guangdong East Noble Group Ltd., Guangdong Chun Sheng Ceramics Co., Ltd. Chaozhou City, Guangdong influx of energy-saving technology advisory services center.

1 Scope

This standard specifies the method for determination of ceramic materials of daily acid and alkali resistance.

This standard applies to glazed, unglazed ceramic products for daily use, it does not apply to the determination of glazed ceramic ware acid and alkali resistance.

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.

Basic dimensions GB/T 6005-2008 Test sieves - Metal wire cloth, perforated plate and electroformed sheet mesh Principle 3 Prescribed method of preparing a sample in sulfuric acid solution (10%) or sodium hydroxide solution (10%) medium boil 1h, after etching the sample quality and the percentage ratio of the initial mass of the sample, that is, ceramic materials of daily acid (base) degrees.

4 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.

5 Apparatus

5.1 Balance. dividing the value of 0.0001g.

5.2 electric oven. capable of temperature control (110 ± 5) °C.

5.3 Adjustable furnace. maximum power 1000W.

5.4 Serpentine condenser. Length 300mm ~ 500mm.