Method for preparing powdery sample of coil paper of cigarette for thermal analysis experiment

Abstract

The invention discloses a method for preparing a powdery sample of coil paper of cigarette for thermal analysis experiment and belongs to the technical field of cigarette experiment. The method is carried out according to the following steps in sequence: (1) pulverizing a sample A of the coil paper of the cigarette to be tested into wastepaper B from 1mm*2mm to 2mm*5mm; (2) drying the wastepaper B for 0.5 hour at a temperature of 100+ / -2 DEG C; and immediately putting the wastepaper B in a blade-type pulverization mill in high-speed rotation and pulverizing the wastepaper B into powdery wastepaper C which can totally pass through a 40-mesh screen; and (3) putting the powdery wastepaper C in the blade-type pulverization mill in high-speed rotation and pulverizing the wastepaper C into wastepaper powders D which can totally pass through a 60-mesh screen, wherein the wastepaper powders D are the powdery sample of the coil paper of the cigarette for the thermal analysis experiment. The method has simple operation, time and labor conservation, even dimension and good fluidity. The prepared sample has large quantity and can meet the requirement of repeating a plurality of detections anda plurality of experimental method analysis detections.

Description

technical field [0001] The invention belongs to the technical field of cigarette experiments, and in particular relates to a new method for preparing experimental powder samples when conducting thermal analysis experiments on cigarette coil paper. Background technique [0002] The cigarette wrapping paper is the wrapping paper used to make cigarettes, and the performance of the cigarette wrapping paper has a great influence on the combustion performance of the cigarette. Therefore, it is a very important experiment to conduct a thermal analysis experiment on the cigarette wrapping paper. When doing thermal analysis experiments, it is necessary to grind the cigarette coil paper into powder. In the prior art, there are three methods for shredding cigarette paper. The first one is to cut the cigarette coil paper manually with scissors into pieces of about 1mm×1mm, but this piece cannot be in close contact with the sample cell of the thermal analyzer during the thermal analysis...

AI Technical Summary

Problems solved by technology

The first one is to cut the cigarette coil paper manually with scissors into pieces of about 1mm×1mm, but this piece cannot be in close contact with the sample cell of the thermal analyzer during the thermal analysis experiment, so the experimental sample Heat conduction has a greater impact, which directly affects the accuracy of the experiment and the in-depth discussion of the experimental results

In addition, cutting by hand is time-consuming and laborious, and cannot meet the sample preparation requirements for mass analysis of industrial samples; moreover, using this method for sample preparation, sampling is limited, the representativeness of sampling is not enough, and the prepared samples cannot be well analyzed. Represents all trays

The second method is to put the sample of cigarette paper to be shredded in the conical centrifuge test tube, then insert the scissors into the conical centrifuge test tube, and cut the paper continuously by hand to shred the paper sample. Although it can meet the requirements of subsequent thermal analysis tests, it is also very time-consuming and laborious. It takes about 1 hour to cut a 1g sample, which also cannot meet the sample preparation requirements for large-scale parallel analysis of industrial samples; The sample size is small, which cannot meet the needs of different analysis methods and detection methods for sample analysis and detection; at the same time, there is also the problem of insufficient representativeness of sampling

The sample produced by this method is in the shape of cotton fiber, has poor fluidity and low bulk density, and the sample pool for thermal analysis has a small volume and a certain volume. Therefore, the quality of the sample used is less for each thermal analysis experiment. , resulting in a relative error in weighing; when making a series of parallel samples, it is more difficult to keep the sample quality consistent, and the sample is loose, which affects the uniformity of heat transfer in thermal analysis experiments

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