Method for detecting content of antioxidant in petroleum resin and method for establishing detection model

A technology of petroleum resin and detection model, which is applied in measurement devices, preparation of test samples, material analysis by optical means, etc., can solve problems such as low detection accuracy, and achieve high detection accuracy, easy operation and simple preparation method. Effect

Inactive Publication Date: 2018-02-02
安徽同心新材料科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] The object of the present invention is to overcome adopting existing method to be difficult to the four [beta-(3,5-di-tert-butyl-4-hydroxyl phenyl) propionic acid] pentaerythritol ester antioxidant content that is added in petroleum resin to quickly and accurately detection, and its detection accuracy is low, providing a detection method for the content of antioxidants in petroleum resins and a method for establishing a detection model

Method used

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  • Method for detecting content of antioxidant in petroleum resin and method for establishing detection model
  • Method for detecting content of antioxidant in petroleum resin and method for establishing detection model
  • Method for detecting content of antioxidant in petroleum resin and method for establishing detection model

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Embodiment 1

[0042] At present, the addition of tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester antioxidant in the applicant's own resin product is in the range of 0.2%-0.4%. The amount of additive added is small, and it is difficult to accurately detect it with existing detection methods, and the content of antioxidants required in different resin products is different, and the precise addition of antioxidants is crucial to the performance of the obtained resin products. In recent years, infrared spectrometers have gradually been used for quantitative analysis of substances, and in the quantitative detection of certain trace substances contained in polymer solid substances, the sample preparation of polymers is specified in the national standard (GB / T 32198-2015 Infrared Spectroscopy Quantitative Analysis There are many methods in General Technical Rules), generally there is the KBr tablet method, but the content ratio of the resin sample is not easy to...

Embodiment 2

[0060] In this embodiment, a liquid standard sample is used to establish a model, and the liquid solvent used is carbon tetrachloride, and a gradient content of an antioxidant is added to a certain amount of carbon tetrachloride solution, and the gradient content ranges from 0% to 1.0%, and is fully stirred and mixed. After uniformity, scan the spectrum (pay attention to the tightness of the solution during this process, scan the spectrum quickly, and do not leave it for too long), drop the mixed solution on the optical table to scan the spectrum, follow the infrared spectrum modeling process: select the classic minimum The square method (CLS), select the appropriate wavelength range, take the characteristic peak wavelength of carbon tetrachloride and antioxidant as the wavelength range of the model, and the special wavelength range is 3700-3500cm -1 ; Calculation, verification and correction of the model, after the model is established, evaluate its performance. In NIR spectr...

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Abstract

The invention discloses a method for detecting the content of an antioxidant in petroleum resin and a method for establishing a detection model, and belongs to the technical field of petrochemical industry. The method for establishing the detection model is as follows: first, producing solid resin products with different mass percentages of antioxidants as standard samples, using a medium-infraredspectrometer, selecting a reflectance mode for spectral scanning of the standard samples to obtain a standard sample spectrogram, choosing least squares method as a model algorithm to establish a quantitative model for antioxidant content detection, and using a resin product with a known antioxidant content to validate and optimize the model; and using the model to directly detect the antioxidantcontent of a petroleum resin product to be detected. The method can detect the content of the antioxidants in the petroleum resin quickly and accurately, the detection accuracy can reach 0.01-0.05%,and the method can meet the detection needs of the content of the antioxidants in the petroleum resins in different application fields.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and more specifically relates to a method for detecting antioxidant content in petroleum resin and a method for establishing a detection model thereof. Background technique [0002] Petroleum resin is a hydrocarbon petroleum resin prepared by cationic polymerization of C5-C10 hydrocarbons, which can be used in different fields such as adhesives, inks, rubbers, and coatings. Because the functional groups of petroleum resin have some unstable double bond structures, they will be oxidized when heated or in the presence of air, so that the anti-aging performance and color of the resin will deteriorate, which will greatly limit the application of petroleum resin in various fields. . In order to improve the application performance of petroleum resins in some fields and improve the stability of petroleum resin products, it is necessary to add antioxidants to petroleum resins in most indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3577G01N1/38
CPCG01N1/38G01N21/3577
Inventor 张素芳李昝赵建云高晓鹏蒋伟丽
Owner 安徽同心新材料科技有限公司
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