Trends in the improvement of methods and equipment for the assessment of flax raw material (review)

The paper presents the results of a comparative analysis of technological quality assessment of flax fiber by the main features: the yield and number of long and short fiber, the content and total fiber yield, determined by different methods of regulatory documentation. The research took place in 2001–2021 in the flax–growing regions of Russia: Tver, Smolensk, Vologda, Kostroma regions. It is established that the information value of the obtained results depends on the chosen evaluation method. The absolute deviations of the average level of the values of the signs determined by various methods are 3.55 - 9.05% for the output of a long fiber, its numbers are 0.00 - 1.64 N, the output of a short fiber is 0.20 - 11.60%, its numbers are 0.40 - 2.75 N, the content and total fiber output are 0.40–10,8%; relative deviations are for the same signs, respectively equal, 24,0–44,5%, 0,00– 13,60%, 1,80–51,60,%, 1,30–44,40%, 1,00–32,00%. The given example shows a possible variation in the assessment of the integral technological quality of flax (from number 1.25 to number 2.00) and the cost of the products produced from it (long and short fiber) (19%), subject to determination by the following two options. The first option provided for the determination of the output of a long fiber on a laboratory ribboner CMT-200M, the numbers of a long fiber - according to the change N4 GOST 10330–76, the output of a short fiber according to the method of technological evaluation of the quality of flax on the ribboner TL-40, the numbers of a short fiber according to GOST 9394- 76. The second option was to find the output of long and short fibers in production conditions on a ribboner, organoleptic evaluation of the number of the long fiber and determination of the number of the short fiber by calculation. It is concluded that it is necessary to bring the level of values of these signs determined by various methods to a single level in order to increase the informational value of assessing the technological quality of flax raw materials.

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Comparison of methods for assessing the technological quality of flax fiber products

Kudryashova

Vinogradova

Koz'yakova

2022

Sib. vestn. s-h. nauki

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The dependence of the quality of the frayed fiber on the variety of flax and the number of flax

Vinogradova¹,

Kudryashova²,

Koz'yakova³

2022

Agrarian Bulletin of The

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Abstract. The article presents information on the quality of long fiber obtained from flax of various quality of 31 varieties of flax of domestic and foreign selection during processing at flax processing enterprises of flax-growing regions of the Russian Federation. The purpose of the research is to determine the strength of the influence on the quality of the long fiber obtained during the processing of flax at processing enterprises, factors of the flax-long flax variety and the number of flax. Methods. The material for the study was flax fiber, represented by 523 batches and the long fiber obtained from it. The control developments of the flax trust were carried out according to a special methodological program with an assessment of the quality of fiber products according to the current regulatory documentation. A rating assessment of varieties by the quality of long fiber and a dispersion analysis of experimental data was carried out according to the scheme of a two-factor uneven complex. Results. Using the rating assessment of varieties by the quality of long fiber, a group of varieties characterized by its highest quality was determined when determining the number of flax on the entire evaluation scale. These include the following varieties: Al’fa, Tverskoy, Zaryanka, Dashkovskiy, Mogilevskiy 2, Tomsk 16. It is noted that in the context of the numbers of the flax trust, the set of varieties with high quality of long fiber represented by the rating varies significantly. It was found that the number of long fibers obtained during the processing of flax is more dependent on the quality of the produced flax (dispersion ratio Ff = 92.0 > Fst = 8.6) than the grade factor (Ff = 6.9 > Fst = 3.3). It is shown that the solution to the problem of improving the quality of long fiber that meets the requirements of the textile industry is primarily associated with the production of high-quality flax. The flax must have a quality of at least number 1.50. Scientific novelty. The priority of the factor of the flax seed number over the factor of the flax variety is proved, and their reliable influence on the quality of the long fiber produced at flax processing enterprises.

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Trends in the improvement of methods and equipment for the assessment of flax raw material (review)

Cited by 2 publications

References 19 publications

Comparison of methods for assessing the technological quality of flax fiber products

Comparison of methods for assessing the technological quality of flax fiber products

The dependence of the quality of the frayed fiber on the variety of flax and the number of flax

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