Please use this identifier to cite or link to this item: https://ea.donntu.edu.ua/jspui/handle/123456789/18476
Title: О ВОЗМОЖНОСТИ ПОЛУЧЕНИЯ ТВЕРДЫХ ПЕН НА ОСНОВЕ МОДИФИЦИРОВАННОГО КАМЕННОУГОЛЬНОГО ПЕКА
Other Titles: THE POSSIBILITY OF SOLID FOAMS OBTAINING ON A BASE OF MODIFIED COAL TAR PITCH
Authors: Крутько, Ирина Григорьевна
Колбаса, Виктория Александровна
Keywords: газообразователи
твердые пены
каменноугольный пек
модификация
газонаполненные пластмассы
blowing agents
solid foams
coal tar pitch
modification
gas-filled plastics
Issue Date: 2013
Publisher: Донецк, ДонНТУ
Series/Report no.: Наукові праці ДонНТУ.;Серія: Хімія і хімічна технологія, 2013. - Вип.2(21). - С.156-161
Abstract: В статье рассматриваются свойства каменноугольного пека как полимерного материала. Представлен механизм образования твердых пен и показана возможность получения пеноматериала на основе модифицированного каменноугольного пека.
Description: Gas-filled materials with polymeric matrix – foamed plastics - have а solidified foam structure. The foamed plastics are produced by foaming and subsequent hardening of initial liquid or viscous-plastic composition. Coal tar pitch is a hard brittle material with low mechanical strength. Coal tar pitch modification by means of active additives gives great opportunities to correct and change the properties of coal tar pitch. Modified coal tar pitch has a number of properties that allow to predict its use as the polymer matrix in the gas-filled plastics of cellular structure. Modified coal tar pitch in the temperature range of 125-155C has a viscosity of 55 - 190 Pa•sec. Therefore, for the foaming of modified coal tar pitch is advisable to use chemical foaming agents. Preliminary studies have shown that the modified coal tar pitch as a thermoplastic material that has properties of polymer, can be used for solid hydrocarbon foams production. Testing of ammonium bicarbonate and sodium mixtures, and stearic acid with chalk as chemical blowing agents to pitch showed that their decomposition with the release of gases observed in the temperature range 100 - 190C. At these temperatures the coal tar pitch has rubbery and plastic condition, i.e. has a viscosity that provides foaming. Keywords: coal tar pitch, modification, gas-filled plastics
URI: http://ea.donntu.edu.ua/handle/123456789/18476
ISSN: 2074-6652
Appears in Collections:Випуск 2(21)

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