Особливості просочувально-сушильного обладнання для виготовлення препрегів

Скорочена інформація про документ
dc.contributor.authorКолосов, Олександр Євгенович
dc.contributor.authorKolosov, O. Ye.
dc.date.accessioned2016-12-04T19:13:55Z
dc.date.available2016-12-04T19:13:55Z
dc.date.issued2013
dc.description.abstractenSpecifics of technology of prepregs obtaining, namely, semi-finished composite materials which contain a predetermined amount of fibrous filler and a polymer matrix are analyzed. It was studied that they are obtained from impregnation in such a way that the most of the physical-chemical properties of the reinforcing material are realized, and to provide specified physical and mechanical performance properties. The main fields of the prepregs application, including aviation, space, nuclear industry, pipeline transportation, construction, wind energy, medicine, sports industry etc. are described. It is shown that provision of certain content of the polymer matrix in the impregnated filler is not less important than its uniform distribution over the cross section and length of the filler. This can be achieved by precise wringing of filler that is saturated with impregnating solution. However, the achieved effect of wringing is limited by forcing node capabilities on the one hand, and on the other – by saturation of filler. It is shown that the required content of the polymer binder in the fibrous fillers can also be provided by precise control of the viscosity (by varying of solvent content) of impregnating solution in combination with a certain speed of passage of the filler through the impregnator (by varying a speed of drawing through). It is ascertained that in the technological processes of impregnation and drying of the fabric viscosity and amount of applied polymeric binder, the strength of the fabric tension, the temperature and duration of drying, the amount of volatiles and other parameters are tightly controlled. It is noted that in the technology of production of prepregs a key part is impregnation-drying lines. In this case, vertical type of impregnation and drying equipment, in contrast to the impregnation and drying equipment of horizontal type, allows to save production area considerably, which is an important factor. It is shown that not less important is the achievement of power saving of basic prepregs preparation process, namely, impregnation, for example by integrated using of ultrasonic. Constructive and technological features of modern impregnation-drying equipment designed to obtain prepregs by domestic, Russian, European and Chinese manufacturers are analyzed. It is established that the modern drying and impregnating lines are large and technically complex engineering systems, which are provided with modern means of automatic control, safety, etc. Therefore, these lines require entirely different technological approach to impregnation and subsequent drying of impregnated glass cloth. It is stated that the basic requirements for the operation of these lines come to the need for provision of a continuous impregnation line operation when changing a roll, to the significant reduction in the amount of volatile solvents in the impregnation composition and the continuous monitoring of the content up to explosive concentrations of solvent vapor-air mixtures in the drying cell, and to the use of polymeric binders ensuring efficient drying modes at high speeds of impregnated filler movement in the drying chamber. Based on the analysis of available information it is shown that the aerodynamic heating method and coolant circulation in the drying zones distinguishes domestic impregnation machine MPT-3 advantageously from a number of foreign counterparts, where in a similar role synthetic oil is used, providing it with a high efficiency. Besides that, the drying chamber of impregnation machine MPT-3M consist of two rotary heat generators which provide independent heating and maintaining of the desired temperature of the coolant in each of the drying zones. Thus the two drying zones are used to dry the impregnated fabric, and the third (middle) zone is used for pre-drying of the fabric prior to its impregnation, thereby it is conducive for the better impregnation. The spheres of integrated using of ultrasonic for achieving energy-saving by basic technological process of prepregs producing, namely impregnation, were proposed. The developed results of ultrasonic technological bases can be used for determination of energy efficient modes and structural and technological parameters of produced in the present impregnation-drying machines. Along with that, according to the developed principles the energy savings is achieved through the actions of cumulative factors. Among them are improvement of the homogenization of the polymer matrix by ultrasonic, ultrasonic activation of the surface of the fibrous fillers for improvement of their wettability by the polymer binder, degassing of structure of fibrous filler right before impregnation, increase of the productivity of the process of impregnation and dosed application of the polymer binder by increasing the speed of a fiber-fill drawing, and a significant reduction of total time of preparation of prepregs along with improvement of properties of the final cured resin composite material.uk
dc.description.abstractukПроаналізовано конструктивно-технологічні особливості сучасного просочувально-сушильного устаткування, призначеного для отримання препрегів, вітчизняного, російського, європейського та китайського виробників. Запропоновані напрямки комплексного використання ультразвуку для досягнення енергозбереження базового технологічного процесу отримання препрегів, а саме просочення.uk
dc.format.pagerangeС. 5-16uk
dc.identifier.citationКолосов, О. Є. Особливості просочувально-сушильного обладнання для виготовлення препрегів / О. Є. Колосов // Вісник НТУУ «КПІ». Хімічна інженерія, екологія та ресурсозбереження : збірник наукових праць. – 2013. – № 1 (11). – С. 5–16. – Бібліогр.: 10 назв.uk
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/18220
dc.language.isoukuk
dc.publisherНТУУ «КПІ»uk
dc.publisher.placeКиївuk
dc.source.nameВісник НТУУ «КПІ». Хімічна інженерія, екологія та ресурсозбереження : збірник наукових працьuk
dc.status.pubpublisheduk
dc.subjectконструкціяuk
dc.subjectтехнологіяuk
dc.subjectмашинаuk
dc.subjectпросочуванняuk
dc.subjectсушінняuk
dc.subjectскло тканинаuk
dc.subjectепоксидuk
dc.subjectполімерuk
dc.subjectсполучнаuk
dc.subjectультразвукuk
dc.subjectенергозбереженняuk
dc.subjectconstructionuk
dc.subjecttechnologyuk
dc.subjectmachineuk
dc.subjectimpregnationuk
dc.subjectdryinguk
dc.subjectglass-clothuk
dc.subjectepoxyuk
dc.subjectpolymeruk
dc.subjectresin binderuk
dc.subjectultrasonicuk
dc.subjectenergy savinguk
dc.subject.udc535.024:620.168:678.02:678.5.059uk
dc.titleОсобливості просочувально-сушильного обладнання для виготовлення препрегівuk
dc.title.alternativeCharacteristics of impregnation-drying equipment for manufacturing of prepregsuk
dc.typeArticleuk
thesis.degree.level-uk

Файли

Контейнер файлів
Зараз показуємо 1 - 1 з 1
Ескіз
Назва:
01_Kolosov.pdf
Розмір:
1.09 MB
Формат:
Adobe Portable Document Format
Завантажити
Ліцензійна угода
Зараз показуємо 1 - 1 з 1
Ескіз недоступний
Назва:
license.txt
Розмір:
7.71 KB
Формат:
Item-specific license agreed upon to submission
Опис:
Завантажити

Зібрання

Вісник НТУУ «КПІ». Хімічна інженерія, екологія та ресурсозбереження: збірник наукових праць, № 1 (11)