Dissertation > Excellent graduate degree dissertation topics show

The Study on the Relationship Between Rheological Characterization and Mechanical Properties of Nylon1212/Functional Elastomer Blends

Author: SongXianLing
Tutor: ChenJinZhou; LiXinFa; WangWanJie
School: Zhengzhou University
Course: Packaging Materials and Engineering
Keywords: nylon1212 reactive blending super-toughness point gel point
CLC: TQ320.1
Type: Master's thesis
Year: 2013
Downloads: 17
Quote: 0
Read: Download Dissertation


Nylon is a kind of thermoplastics engineering plastics used widely at home and abroad. It has good abrasion resistance, fatigue resistance, corrosion resistance, oil resistance and other excellent properties, but the relatively low impact strength restricts it to use in some fields. The super-toughness material can be prepared by reactive blending nylon with functional elastomers (usually maleic anhydride functionalized elastomer). But the optimal compositions of super-toughness nylon are often acquired based on orthogonal design method, considering various factors and making a lot of orthogonal experiment. How to use a simple experimental method and determine effectively the optimal compositions of super-toughness nylon is an important and considerable problem. This study try to establish the corresponding relationship between the key mechanical parameters and characteristic rheological parameters through investigating the effects of elastomer types, concentration, the graft ratio on dynamic rheological behavior and mechanical properties of the double number nylon/functional elastomer reactive blends. We have prepared three types nylonl212/POE-g-MAH, nylon1212/EPDM-g-MAH and nylon1212/SEBS-g-MAH blends and investigated their mechanical, rheological behaviors and morphologies.The results could be summarized as follows:(1) With the addition of functional elastomer, the impact strength of blends increased greatly. The highest notched Izod impact strength of blends attained to90kJ/m2.(2) The reactive blends exhibited the liquid-solid transitions with the increase of functional elastomer content. G’curves of blends showed obvious "second plateau" in the low frequency region.(3) The blends of nylon1212/POE-g-MAH and nylon1212/EPDM-g-MAH showed one "gel point" within the concentration investigated, and the blends corresponding to gel point show the highest Izod impact strength. The "gel point" acquired from dynamic rheological data and "super-toughness point" of mechanical properties had the corresponding relationship. The special "network" morphology was observed at gel point. (4) The blends of nylon1212/SEBS-g-MAH showed two "gel point" within the concentration investigated, and the blends corresponding to the first gel point didn’t show the highest Izod impact strength. The similar special "network" morphology was still observed at this gel point.

Related Dissertations

  1. Synthesis and Compatibilizing Efficiency of Block Polymer Anhy-PS-Br and Anhy-PS-Anth,O631.3
  2. Studies on the Exchange Reaction between PBS and PA6IcoT and Its Products,O631.3
  3. Preparation of NBR/PP Thermoplastic Elastomers and Their Morphology, Structure and Properties,TQ334
  4. Study of Polymer Reactive Blending Process,O631.3
  5. Preparation of Isocyanate Functionalized SEBS and Its Blending with Polyamide 6,O631.3
  6. Synthesis, Structure and Properties of the Graft-polymer of Poly (Styrene-alt-maleic Anhydride) and Polyurethane,O632
  7. Preparation of Isocyanate Functionalized Polyolefin and Study on Compatibility of Polyolefin/Nylon 6 Blends,O631.3
  8. Modeling Free Radical Graft Polymerization of VAc from PEG and Vinyl/Divinyl Atom Transfer Radical Copolymerization with Crosslinking,O631.5
  9. Theoretical Study on the Synthesis and Properties of the Gradient Copolymer,O631.3
  10. Preparation and Rheological Study of Ionic-Crosslinked Konjac Glucomannan Gels,O631.3
  11. Study on the Preparation, Morphology and Properties of Reactive Organic Modified Clay/Polymer Nanocomposites,TB383.1
  12. Study on the Reactive Blending of PET/PEN by Chain-Extension,TQ326
  13. Study on Structure and Properties of PHB/PEN、PEN and Their Reactive Blends,TB332
  14. Rheological Behaviors during Phase Separation in Thermoplastic Modified Epoxy Systems,O631.3
  15. Preparation of the Amine-terminated Polyethylene-glycol and Its Blends with Polyolefin,O631.3
  16. Study on the Nylon1212by Filling Wollastonite、Sericite,TQ323.6
  17. Effect of setting and molecular weight of nylon 1212Mark-Houwink parameters on the crystallization behavior,TQ342.1
  18. Study on the Degradation of Unsaturated Polyester Resin and Fiber Reinforced Polymer in Hot Compressed Water,TQ320.1
  19. Synthesis and Performance Study of Bisphenol AP-based Polybenzoxazines,TQ320.1
  20. The Studying of Temperature Distribution and Control Technique during Polymer Sheet Heat Process,TQ320.6
  21. Analysis of the Injection Molding and Mold Design of the Small Car Plastic Parts,TQ320.662

CLC: > Industrial Technology > Chemical Industry > Synthetic resins and plastics industry > General issues > Basic theory
© 2012 www.DissertationTopic.Net  Mobile