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Method for analyzing C5 hydrogenation hydrocarbon resin relative molecular weight and distribution with jelly glue pervasion chromatogram

A technology of gel permeation chromatography and hydrogenated petroleum resin, which is applied in the field of chemical analysis, can solve the problems that the analysis method research is still blank, and achieve the effect of easy operation, high precision and good repeatability

Active Publication Date: 2012-07-04
SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Domestic research on the analysis method of this kind of low molecular weight petroleum resin is still blank

Method used

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  • Method for analyzing C5 hydrogenation hydrocarbon resin relative molecular weight and distribution with jelly glue pervasion chromatogram
  • Method for analyzing C5 hydrogenation hydrocarbon resin relative molecular weight and distribution with jelly glue pervasion chromatogram
  • Method for analyzing C5 hydrogenation hydrocarbon resin relative molecular weight and distribution with jelly glue pervasion chromatogram

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Embodiment Construction

[0018] (1), preparation of standard sample solution

[0019] According to the small characteristics of the molecular weight of the substance to be measured, select polystyrene standard samples of Mp=162, 250, 449, 580, 1050, 1480, 2360, 2900, 5030, 8450, 12830, 19760, 31420, 63350 as standard substances, and Dissolve the standard substance in tetrahydrofuran (THF) to a sample solution with a concentration of 0.5-2 mg / mL;

[0020] (2) Selection of chromatographic analysis conditions

[0021] 1. Chromatographic analysis conditions:

[0022] Chromatographic column: silica gel column, column length 300mm, inner diameter 7.5mm, silica gel particle size 3μm or 5μm;

[0023] Mobile phase: tetrahydrofuran;

[0024] Column temperature: room temperature;

[0025] Flow rate: 1.0 mL / min.

[0026] 2. The equipment used

[0027] PL GPC-220 gel permeation chromatography, differential refractive index detector; PL chromatography workstation

[0028] 3. Specifications of raw materials ...

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Abstract

The invention relates to an analysis method for the relative molecular mass and the distribution of C5 hydrogenation petroleum resin through gel permeation chromatography, the method selects suitable effective small molecular substance as the standard substance, then dissolving the standard substance through tetrahydrofuran (THF) to a guide sample whose concentration is 0.5 to 2mg / mL, analyzing the sample under the chromatographic condition of a PL-GPC 220 gel permeation chromatographic instrument, a differential refractive index detector, a silica gel chromatography column, and mobile phasetetrahydrofuran, wherein, the length of the silica gel chromatography column is 300mm, the inner diameter is 7.5mm, the flow velocity of the mobile phase tetrahydrofuran is 1.0mL / min, the temperature of the column is room temperature, making out a standard curve, and detecting the linearly dependent coefficient; then accurately weighing out a petroleum resin sample, preparing the tetrahydrofuran solution whose concentration is 15 to 40mg / mL, which are arranged in an auto sampler, and analyzed and detected under the chromatographic condition. The invention is convenient to operation, has good repeatability and high precision, and provides an effective analysis method for the production engineering of the C5 hydrogenation petroleum resin.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis, and relates to a method for the relative molecular mass and distribution of C5 hydrogenated petroleum resin, in particular to a method for analyzing the relative molecular mass and distribution of C5 hydrogenated petroleum resin by gel permeation chromatography. It can be used to analyze the relative molecular weight and distribution of low molecular weight polymers with a number average molecular weight of 500-1000, and can also be used as an enterprise quality inspection standard for related products, and can be used to study its polymerization mechanism. Background technique [0002] C 5 Hydrogenated petroleum resin is C cracked with ethylene 5 Distillation is a solid functional resin obtained by separating and polymerizing raw materials. It has low acid value, good miscibility, low melting point, good adhesion, water resistance, ethanol resistance, and chemical corrosion resistance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
Inventor 马翠芳杨慧明李延武克峰李启玉
Owner SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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