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МЕЖДУНАРОДНЫЙ НАУЧНЫЙ ЖУРНАЛ «СИМВОЛ НАУКИ» №4/2016 ISSN 2410-700Х
ХИМИЧЕСКИЕ НАУКИ
UDC 54
M.I. Abdullin1, A.A.Basyrov2, A.S.Gadeev3.
'Professor of department of technical chemistry and materials science 2Graduate student of department of technical chemistry and materials science 3Student of department of technical chemistry and materials science Bashkir State University. 100 Mingazhev Str., Ufa 450074, Russia,
E-mail: [email protected]
RECEIVING AND PROPERTIES OF POLYMERIC COMPOSITIONS BASED STYRENE-BUTADIENE-STYRENE BLOCK SO-POLYMER
Abstract:
Dependence of MFI of plasticizer in polymeric composition was studied. Dependence of technological properties of polymeric compositions on composition of softener PN-6 Oil and technical carbon is established. Polymeric compositions with specific for using in 3D-printing were received.
Key-words:
technical carbon, Printex XE-2B, SBS, melt flow index.
Introduction
There are a lot of problems of modern chemistry which can be decided only by using polymeric composite materials. Their using increases thanks to broad field of possibility of changing and improvement properties. Conductive polymeric composites are usually consisting of a polymer or so-polymer, as a matrix, and conductive powder.
Perspective filler for conductive polymeric composites is technical nano carbon Printex XE-2B. Chain structure of such technical carbon makes broad fields of its using in polymeric composites. However rheological properties of polymeric compositions filled with Printex XE-2B technical carbon and their recycling aren't studied.
The object of the article is receipt of polymeric materials, based on SBS and filled with Printex XE-2B technical carbon (filling 15 mass % and more) which could be recycled by using of three prototyping technology.
Experimental part
Basic materials:
1. Styrene-Butadiene-Styrene block so-polymer LG-501 granules;
2. Technical carbon (TC) Printex XE-2B;
3. Oil Plasticizer OP-6 (PN-6 Oil) Analyzed compositions (mass %):
• SBS LG-501
• SBS LG-501
• SBS LG-501
• SBS LG-501
• SBS LG-501
• SBS LG-501
• SBS LG-501
• SBS LG-501
Oil Plasticizer OP-6(PN-6 Oil)- 55:45 Oil Plasticizer OP-6(PN-6 Oil): TC Printex XE-2B - 50:45:5 Oil Plasticizer OP-6(PN-6 Oil): TC Printex XE-2B - 45:45:10 Oil Plasticizer OP-6(PN-6 Oil) : TC Printex XE-2B - 40:45:15 Oil Plasticizer OP-6(PN-6 Oil) : TC Printex XE-2B - 35:45:20 Oil Plasticizer OP-6(PN-6 Oil): TC Printex XE-2B - 30:55:15 Oil Plasticizer OP-6(PN-6 Oil): TC Printex XE-2B - 20:65:15 Oil Plasticizer OP-6(PN-6 Oil): TC Printex XE-2B - 15:70:15
_МЕЖДУНАРОДНЫЙ НАУЧНЫЙ ЖУРНАЛ «СИМВОЛ НАУКИ» №4/2016 ISSN 2410-700Х_
The specified compositions were compounded with filaments receipt (diameter 3mm).
Rheological properties of polymers were studied by capillary viscometer in the temperature interval 130-
170оС, pressure 98.9N. The method's principle is to determine in grams mass of material which was extruded in 10
minutes. Melt flow index (g/10 minutes) was calculated according to the formula:
MF/ = 600-rn
t '
where m - mass of extruded polymer's part (grams), t- time of polymer's flow.
Results and Discussion
It was established earlier that the optimum ratio electric conductance - technological effectiveness is observed at extent of filling with polymeric composition TC Printex XE-2B from 15% to 20% [8]. Nevertheless, a recycling of polymeric composites with the specified TC content is the lowest. The flow of polymers melts was estimated in the melt flow index parameter (MFI). Processing of polymeric compositions on the 3D printer requires value of MFI more than 15g/10min.
2 series of polymeric compositions were prepared:
1. With TC content from 0 to 20mass. % and constant content of plasticizer PN-6 oil 45mass. %.
2. With the content of PN-6 oil from 45 to 70mass. % and constant TC content of 15%.
Plasticizer content, mass.% PN-6
Filler content, mass.% TC Printex XE-2B
Fig.1. Dependence of MFI of the modified SBS-compositions on the contents: 1 - TC Printex XE-2B (150°C, 98,9N, PN-6 45mass. %); 2 - PN-6 oils (150°C, 98,9 N, TC Printex XE-2B 15mass. %)
It was established that processing of the SBS-compositions filled with technical carbon of the Printex XE-2B brand in lack of plasticizer, is impossible to be carried out already at the TC content more 5mass %. At introduction of PN-6 to structure of SBS-compositions in quantity less than 45mass % melt doesn't show flow. At increase of PN-6 oil into SBS-composition from 45 up to 70 mass % a melt flow index increases from 0,2 to 18,9 g/10min. (fig. 1). This change is connected with the fact that PN-6 oil works as SBS plasticizer, increases mobility of macromolecules of polymer and, therefore, SBS-composition melt flow.
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Temperature, oC
Fig.2. Dependence of the MFI of compositions on the basis of SBS and PN-6 (45 mass %), filled with TC PrintexXE-2B, on temperature (98,9N). Content of TC Printex XE-2B, mass %: 1 - 0; 2 - 5; 3 - 10; 4 - 15.
The comparative analysis of the received MFI dependences on temperature showed that MFI value decreases with increase of TC content. And for composition 4, with the highest TC content (15%), MFI changes slightly with increase in temperature from 130 to 170°C (fig. 2).
Temperature, oC
Fig. 3. Dependence of the MFI of compositions on the basis of SBS and TC Printex XE-2B (15 mass %), filled with PN-6 oil, on temperature (98,9N). Content of PN-6 oil, mass %: 1 - 70; 2 - 65, 3 - 55; 4 - 45.
It was established that MFI value increases with increase in the content of oil in composition (TC-15%). Composition 1 containing PN-6 oil in amount of 70 mass %, is characterized by the highest MFI value (20 g/10 min.), however the composition melt index changes to a lower extent with increase in temperature in the range from 130 to 170°C, in comparison with compositions 2 and 3. For compositions 2 and 3 in the same temperature range there is a spasmodic increase in melt flow. The sample 4 shows the lowest MFI values- less than 5 g/10 min (fig. 3).
_МЕЖДУНАРОДНЫЙ НАУЧНЫЙ ЖУРНАЛ «СИМВОЛ НАУКИ» №4/2016 ISSN 2410-700Х_
Thus, polymeric compositions with optimum electric conductance and with the corresponding technological conditions of processing on 3D - the printer were received (T> 170°C; P=98,9N; MFI>15 g/10 min), mass %:
1. SBSLG-501: PN-6 oil: TC Printex XE-2B-30:55:15;
2. SBSLG-501: PN-6 oil: TC Printex XE-2B-20:65:15;
3. SBSLG-501: PN-6 oil: TC Printex XE-2B-15:70:15.
Conclusion
The electro-conductive polymeric compositions on a basis butadiene of styrene block so-polymer of the LG-501 brand possessing necessary technological properties for using in the 3D printing are developed. It is established that of MFI value increases with increase in the content of PN-6 oil in composition. The increase in the TC content reduces a tendency to growth of MFI compositions.
References
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© Abdullin M.I., Basyrov A.A., Gadeev A.S.. 2016
УДК 541.48-14
Жуковин Сергей Вадимович Чернова Ольга Владимировна Кондратьев Денис Андреевич
канд-ты хим. наук, доценты ВятГУ,
г. Киров, РФ E-mail: [email protected]
КИНЕТИКА ВОССТАНОВЛЕНИЯ ИОНОВ ГОЛЬМИЯ ИЗ ЭКВИМОЛЬНОГО
РАСПЛАВА KCl-NaCl
Аннотация
Методами хронопотенциометрии и вольтамперометрии определены кинетические параметры (коэффициенты переноса (az), плотность тока обмена) процесса восстановления ионов гольмия в эквимольном расплаве KCl-NaCl.
