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Preparation method of gas sample in vinyl gas chromatography analysis of 110 methylvinyl silicone rubber

A methyl vinyl silicon, gas chromatography technology, applied in the direction of analysis of materials, material separation, instruments, etc., can solve problems such as large errors and poor operation of gas sample preparation, achieving small errors, short testing time, and time-consuming short effect

Active Publication Date: 2012-07-11
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the national 110 methyl vinyl silicone rubber industry product analysis refers to the industry standard HG / T 3312- -2000 "110 methyl vinyl silicone rubber", but when the gas chromatography in this industry standard tests the vinyl content, the gas sample preparation is not enough Works well, but the error is large

Method used

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  • Preparation method of gas sample in vinyl gas chromatography analysis of 110 methylvinyl silicone rubber
  • Preparation method of gas sample in vinyl gas chromatography analysis of 110 methylvinyl silicone rubber
  • Preparation method of gas sample in vinyl gas chromatography analysis of 110 methylvinyl silicone rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of gas sample in 110 methyl vinyl silicone rubber vinyl gas chromatography analysis, the steps are as follows:

[0032] a. Sample handling:

[0033] Weigh 0.0190g of the sample into the bottom of a dry and clean headspace sample bottle, add 0.1g of potassium hydroxide, and then use a capper to press the matching cap on the headspace sample bottle to seal it, and place the sample bottle at 200°C Keep the temperature in an electric drying oven for 10 minutes to completely crack the sample, and collect the generated ethylene gas in a sample bottle. `

[0034] b. Processing of standard samples

[0035] Weigh 0.0190g of a standard sample of methyl vinyl silicone rubber with known vinyl content into the bottom of a dry and clean headspace vial, add 0.1g of potassium hydroxide, and press the matching cap on the headspace with a capper Seal the sample bottle, put the standard sample bottle in an electric drying oven at 200°C for 10 minutes at a constan...

Embodiment 2

[0056] The preparation method of gas sample in 110 methyl vinyl silicone rubber vinyl gas chromatography analysis, the steps are as follows:

[0057] a. Sample handling:

[0058] Weigh 0.0200g of the sample into the bottom of a dry and clean headspace sample bottle, add about 0.1g of potassium hydroxide, then use a capper to press the matching cap on the headspace sample bottle to seal it, and put the sample bottle into 200 ℃ in an electric heating oven for 10 minutes to completely crack the sample, and collect the generated ethylene gas in a sample bottle. `

[0059] b. Processing of standard samples

[0060] Weigh 0.0200g of a standard sample of methyl vinyl silicone rubber with known vinyl content into the bottom of a dry and clean headspace sample bottle, add about 0.1g of potassium hydroxide, and then press the matching cap on the top with a capper. Seal the empty sample bottle, place the standard sample bottle in an electric drying oven at 200°C for 10 minutes at a co...

Embodiment 3

[0081] The preparation method of gas sample in 110 methyl vinyl silicone rubber vinyl gas chromatography analysis, the steps are as follows:

[0082] a. Sample handling:

[0083] Weigh 0.0210g of the sample into the bottom of a dry and clean headspace sample bottle, add 0.1g of potassium hydroxide, then use a capper to press the matching cap on the headspace sample bottle to seal, and place the sample bottle at 200°C Keep the temperature in an electric drying oven for 10 minutes to completely crack the sample, and collect the generated ethylene gas in a sample bottle. `

[0084] b. Processing of standard samples

[0085] Weigh 0.0210g of a standard sample of methyl vinyl silicone rubber with known vinyl content into the bottom of a dry and clean headspace sample bottle, add 0.1g of potassium hydroxide, and then press the matching cap on the headspace with a capper Seal the sample bottle, put the standard sample bottle in an electric drying oven at 200°C for 10 minutes at a ...

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Abstract

The invention relates to a preparation method of a gas sample in vinyl gas chromatography analysis of 110 methylvinyl silicone rubber. The preparation method comprises the following steps of: adding potassium hydroxide to a sample under certain conditions for pyrolysis to generate an ethylene gas; collecting the gas with a head-space sample bottle; detecting the gas by a hydrogen flame ionization detector through adopting a gas chromatography; and quantifying the gas by an external standard method. The preparation method of the gas sample, disclosed by the invention, is simple in preparation method, short in test time and reduced in analyst body health damage caused by poisonous and harmful reagents and pollution to environment caused by recycling and discharging of waste liquor and meets the requirements of production and detection.

Description

technical field [0001] The invention relates to a 110 methyl vinyl silicone rubber vinyl gas chromatography analysis, in particular to a method for preparing a gas sample in the 110 methyl vinyl silicone rubber vinyl gas chromatography analysis. Background technique [0002] At present, the national 110 methyl vinyl silicone rubber industry product analysis refers to the industry standard HG / T 3312- -2000 "110 methyl vinyl silicone rubber", but when the gas chromatography in this industry standard tests the vinyl content, the gas sample preparation is not enough It works well, but the error is large. Contents of the invention [0003] The invention provides a method for preparing gas samples in 110 methyl vinyl silicone rubber vinyl gas chromatography analysis. The gas sample preparation method is simple, the test time is short, the test error is small, and the health of analysts is reduced due to toxic and harmful reagents. And the pollution caused by the recovery and di...

Claims

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Application Information

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IPC IPC(8): G01N30/06G01N30/88
Inventor 吴红李莉
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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