GB/T 2914-2008 English PDFUS$94.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 2914-2008: Plastics -- Homopolymer and copolymer resins of vinyl chloride -- Determination of volatile matter (including water) Status: Valid GB/T 2914: Historical versions
Basic dataStandard ID: GB/T 2914-2008 (GB/T2914-2008)Description (Translated English): Plastics -- Homopolymer and copolymer resins of vinyl chloride -- Determination of volatile matter (including water) Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G32 Classification of International Standard: 83.080.20 Word Count Estimation: 5,552 Date of Issue: 2008-05-15 Date of Implementation: 2008-11-01 Older Standard (superseded by this standard): GB/T 2914-1999 Adopted Standard: ISO 1269-2006, IDT Regulation (derived from): National Standard Approval Announcement 2008 No.8 (Total No.121) 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 two measuring vinyl chloride homopolymer and copolymer resins volatiles approach. GB/T 2914-2008: Plastics -- Homopolymer and copolymer resins of vinyl chloride -- Determination of volatile matter (including water)---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. Plastics. Homopolymer and copolymer resins of vinyl chloride. Determination of volatile matter (including water) ICS 83.080.20 G32 National Standards of People's Republic of China GB/T 2914-2008/ISO 1269.2006 Replacing GB/T 2914-1999 Plastics - Vinyl chloride homopolymer and copolymer resins Determination of volatile matter (including water) (ISO 1269.2006, IDT) Posted 2008-05-15 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard is identical with ISO 1269. "Determination of vinyl chloride homopolymer and copolymer resins volatile matter (including water) of" 2006 (E) (English Chinese Version). For ease of use, this standard made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) use a decimal point instead of a decimal comma ",". ","; c) Remove the preface to the international standards. This standard replaces GB/T 2914-1999 "vinyl chloride homopolymer and copolymer resins volatile matter (including water) of the determination." This standard GB/T 2914-1999 and the main technical differences are as follows. --- Modify the balance requirements (1999 version 3.3, this version 3.1.3); --- Modified heating constant weight requirements (1999 version 4.3, this version 4.1); --- Increasing the method B (this standard 3.2,4.2,5.2); --- Added "deviation" chapter (Chapter 6 of this standard). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee of plastic PVC resin product Club (SAC/TC15/SC7) centralized. This standard was drafted. Jinxi Chemical Industry Research Institute, Qingdao Haijing Chemical Group Co., Ltd., Fujian Southeast Electrochemical Co., Ltd., China Petrochemical Qilu Company Ltd. chlor-alkali plants. The main drafters of this standard. Lijuan, Zhang Yingmin, Hao Jing, Zhao, Di Huaiji. This standard was first published in 1982, the first revision in 1999. Please note that some of the content of this standard may involve patents, the issuing authority of this standard should not bear the responsibility to identify these patents. GB/T 2914-2008/ISO 1269.2006 Plastics - Vinyl chloride homopolymer and copolymer resins Determination of volatile matter (including water)1 ScopeThis standard specifies two measuring vinyl chloride homopolymer and copolymer resins in volatile matter (including water) method. Principle 2 The resin sample tile in a predetermined size weighing dish, at a suitable temperature to constant mass.3 Instrument3.1 Method A (using an oven and balance) 3.1.1 The oven can be controlled at (110 ± 2) ℃ and a weak natural ventilation or with a low speed circulation fan. 3.1.2 weighing dish diameter of about 80mm, a height greater than 5mm, glass, aluminum or stainless steel (preferred) made of shallow cover weighing dish. 3.1.3 scales, accurate to 0.001g. 3.1.4 drier, filled with a suitable desiccant. 3.2 Method B (using automatic thermal gravimetric analysis balance) 3.2.1 oven can be controlled at (110 ± 2) ℃. 3.2.2 Automatic thermal gravimetric analysis balance, including a precision balance and an infrared or halogen heating chamber. Automatic thermal gravimetric analysis balance By testing the quality of the readings automatically volatiles were evaporated to constant mass. 3.2.3 weighing dish diameter of about 100mm, height is greater than 5mm, aluminum. 3.2.4 scales, accurate to 0.001g. 3.2.5 drier, filled with a suitable desiccant. Step 4 4.1 Method A Adjust oven (3.1.1) to (110 ± 2) ℃. Heated lid weighing dish (3.1.2) in the oven for about 1h, when you open the lid on the warming heating Box. Out in a desiccator (3.1.4) to cool to room temperature and then weighed weighing dish and lid to the nearest 0.005g. Approximately 5g of the sample spread evenly in the bottom of the weighing pan, cover weighing, accurate to 0.005g. Push the complete dish was placed in an oven (110 ± 2) ℃, open the lid but placed in an oven and heated for about 1h. The dish was removed from the oven, close the lid. After cooling in a desiccator to room temperature and weigh to the nearest 0.005g. Follow the same steps, then a half-hour cycle of heating in an oven, until two successive weighing results no greater than 0.005g. NOTE. (110 ± 2) ℃ prolonged heating may cause some thermal degradation of the resin. In this case, it is recommended to control the evaporation process at (105 ± 2) ℃. On the same samples were assayed. 4.2 Method B Adjust oven (3.2.1) to (110 ± 2) ℃. Heating aluminum weighing dish (3.2.3) about 1h, out of the desiccator (3.2.5) and cooled To room temperature. The dish was placed in automatic thermal gravimetric analysis balance (3.2.2) the tare. Based on resin type, (5 ~ 15) g of the sample spread evenly in the bottom of the weighing dish, weighing, accurate to 0.005g. GB/T 2914-2008/ISO 1269.2006 ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 2914-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 2914-2008_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 2914-2008?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 2914-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
