Modification of Rubber Particle filled Thermoplastic with High Energy Electrons

• Main Author: Sritragool, Kunlapaporn
• Other Authors: TU Chemnitz, Fakultät für Maschinenbau
• Format: Doctoral Thesis
• Language: English
• Published: Universitätsbibliothek Chemnitz 2010
• Subjects: Blend; Compatibility; Grafting agent; High energy electrons; In-stationary condition (electron induced reactive processing); Interfacial adhesion; Rubber particle; Rubber recycling; Stationary condition; ddc:620; Kompatibilität; Polypropylen
• Online Access: http://nbn-resolving.de/urn:nbn:de:bsz:ch1-201000954; http://nbn-resolving.de/urn:nbn:de:bsz:ch1-201000954; http://www.qucosa.de/fileadmin/data/qucosa/documents/6020/data/Diss_Sritragool.pdf; http://www.qucosa.de/fileadmin/data/qucosa/documents/6020/20100095.txt

In present study, high energy electrons were used to modify blends based on RP and PP under two conditions: stationary and in-stationary conditions. Modification of blend under stationary condition is a process which is established in industrial application and where required absorbed dose is applied to form parts (after molding) at room temperature and in solid state. On the contrary, the modification of blend with high energy electrons under in-stationary condition is a new process (electron induced reactive processing) where required absorbed dose is applied to a molten state during melt mixing process. The modification of blend based on RP and PP under stationary condition resulted in slightly enhancement of tensile properties while the modification of this blend under in-stationary condition resulted in deterioration of tensile properties due to degradation of the PP matrix. Thus, special grafting agent (GA) is required for improving the tensile properties. The effect of different GAs on tensile, thermal, dynamic mechanical as well as morphological properties and melt flow properties of blends based on RP and PP were determined. The optimum absorbed dose for modification of blend based on RP and PP under both conditions was evaluated. In addition, the effect of treatment parameters of electron induced reactive processing was investigated.