GB/T 36691-2018 English PDF

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GB/T 36691-2018: Methyl vinyl silicone rubber -- Determination of vinyl content -- Near infrared spectroscopy
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36691-2018	199	Add to Cart	3 days	Methyl vinyl silicone rubber -- Determination of vinyl content -- Near infrared spectroscopy	Valid

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Basic data

Standard ID: GB/T 36691-2018 (GB/T36691-2018)
Description (Translated English): Methyl vinyl silicone rubber -- Determination of vinyl content -- Near infrared spectroscopy
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G40
Classification of International Standard: 83.060
Word Count Estimation: 10,146
Date of Issue: 2018-09-17
Date of Implementation: 2019-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36691-2018: Methyl vinyl silicone rubber -- Determination of vinyl content -- Near infrared spectroscopy

---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.
Methyl vinyl silicone rubber - Determination of vinyl content - Near infrared spectroscopy ICS 83.060 G40 National Standards of People's Republic of China Determination of vinyl content of methyl vinyl silicone rubber Near infrared method Published on.2018-09-17 Implementation of.2019-04-01 State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Rubber and Rubber Products Standardization Technical Committee (SAC/TC35). This standard was drafted. Hesheng Silicon Industry Co., Ltd., Shenyang Rubber Research and Design Institute Co., Ltd. The main drafters of this standard. Nie Changhong, Zeng Songhua, Kong Bo, Fang Hongcheng, Luo Wei, Peng Jinxin, Guan Lijuan, Li Wei. Determination of vinyl content of methyl vinyl silicone rubber Near infrared method

1 Scope

This standard specifies the method for determining the vinyl content (vinyl mole fraction) of methyl vinyl silicone rubber by near-infrared method. The vinyl content ranges from 0.04% to 5.00%. This standard applies to methyl vinyl silicone rubber copolymerized with a dimethylsiloxane ring and methyl vinylsiloxane.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 28610-2012 methyl vinyl silicone rubber GB/T 29858 Molecular Spectrometry Multivariate Calibration Quantitative Analysis General

3 Terms and definitions

The terms and definitions defined in GB/T 29858 apply to this document.

4 Principle

Near-infrared spectroscopy uses chemical bonds such as hydrogen-containing groups XH (X=C, N, O) at wavelengths from 780 nm to 2500 nm. The characteristic spectrum generated by vibration or rotation, the stoichiometric method is used to establish a quantitative model for predicting vinyl content, and the model is determined by model Vinyl content in vinyl-based silicone rubber.

5 instruments and calibration samples

Near-infrared spectrometer. Random software has the functions of collection, storage analysis and calculation of near-infrared spectral data, which can establish reliable settings. For the standard model, an integrating sphere module or a transmissive module is required, and an accessory with a fixed optical path quartz surface is included. Should comply with GB/T 29858 instrument Claim. Calibration sample. low vinyl content methyl vinyl silicone rubber sample with a vinyl content of 0.04% to 0.30% and 0.30%~ 5.00% high vinyl vinyl silicone rubber sample.

6 Analysis steps

6.1 Instrument preparation Before the measurement, the instrument preheating and self-testing are carried out according to the requirements of the near-infrared analyzer manual. ......

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