Method for determining content percentage in mixed oil product
A technology of percentage and oil product, which is applied in the field of determination of content percentage in mixed oil products, and can solve the problems of inaccurate control of the length of the transition roll and increased cost
Inactive Publication Date: 2016-03-23
SHOUGANG CORPORATION
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Problems solved by technology
[0004] The purpose of the present invention is to provide a method for measuring the content percentage in mixed oil products, which solves the problem that the length of the transition roll cannot be accurately controlled and the cost increases
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Embodiment 1
[0017] A method for determining the content percentage of mixed oil products, the steps are:
[0018] 1. Perform infrared absorption spectrometry for the two rust-proof oils of the mixed rust-proof oil to be tested. figure 1 As shown, for different anti-rust oils, the biggest difference appears in the relative intensity of the peak at 1750-1735 cm-1 and the absorption peak at 1300-1150 cm-1. By comparing the spectrum, we can see that the above absorption peak belongs to the characteristic absorption of ester substances. For No. A oil product, the absorption peak intensity of ester substances is higher, and for No. B oil product, the absorption peak intensity of ester substances is Very low. Integrating the area of the broad peak at 3000 cm-1 and the sharp peak at 1750-1735 cm-1 in the infrared spectrum, the comparison between the two can be regarded as the relative content of esters in the oil.
[0019] 2. Configure a series of mixed oil samples with different ratios for oil pro...
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The invention provides a method for determining the content percentage in a mixed oil product and belongs to the field of rust-proof oil. The method comprises the steps that infrared absorption spectrometry is conducted on the rust-proof oil A to be determined and the rust-proof oil B to be determined, the broad peak area at the 3000 cm-1 position and the peak area at the 1750-1735 cm-1 position are integrated, the obtained ratio value of the broad peak area to the peak area is the relative content of esters in the oil product; infrared characteristic absorption analysis is conducted on different mixed oil samples to obtain a standard curve; the mixed oils at the head portion, the middle portion and the tail portion of a transition roll for switching the oil A to the oil B in a field are obtained to be subjected to infrared spectrum detection, the broad peak position and the peak position are integrated, the ratio value is substituted into the standard curve to determine the relative content of the oil A in the mixed oil product. The method has the advantages that qualitative analysis can be conducted on organic groups in the samples according to the position where a spectral band is located, and meanwhile quantitative analysis can be conducted on corresponding organic matter according to the relative strength of the spectral band.
Description
Technical field [0001] The invention belongs to the technical field of rust preventive oils, and particularly relates to a method for determining the content percentage of mixed oils. Background technique [0002] After the automobile plate is produced, it is necessary to coat the surface of the plate with anti-rust oil to ensure the corrosion resistance of the plate surface during the production, transportation and use of the automobile plate. However, according to the different technical requirements of downstream users for automotive sheet products, there are different requirements for the brand and variety of anti-rust oil coated on the plate surface. Therefore, in actual production, different types of anti-rust oil need to be replaced in the oiling machine. After the oil is changed, the remaining oil before the replacement will be mixed with the used oil and coated on the car plate, which will affect the rust resistance and stamping properties of the car plate in the subsequ...
Claims
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Login to View More IPC IPC(8): G01N21/3577
CPCG01N21/3577
Inventor 苗雨芳赵晓非
Owner SHOUGANG CORPORATION