scholarly journals Rheology, morphology and mechanical properties of compatibilized poly(vinylidene fluoride) (PVDF)/thermoplastic polyurethane (TPU) blends

2008 ◽  
Vol 27 (4) ◽  
pp. 441-446 ◽  
Author(s):  
Haiying Ma ◽  
Yuming Yang
Keyword(s):  
Mechanical Properties ◽  
Vinylidene Fluoride ◽  
Thermoplastic Polyurethane ◽  
Poly Vinylidene Fluoride ◽  
Morphology And Mechanical Properties

scholarly journals Morphology and mechanical properties of polyamide 12 (PA12)/poly(vinylidene fluoride) (PVDF) blends

2009 ◽  
Vol 11 (3) ◽  
pp. 27-34 ◽  
Author(s):  
Aleksandra Ratajska ◽  
Wojciech Kulak ◽  
Artur Poeppel ◽  
Andreas Seyler ◽  
Zbigniew Roslaniec
Keyword(s):  
Mechanical Properties ◽  
Vinylidene Fluoride ◽  
Polymeric Materials ◽  
Scanning Calorimetry ◽  
Crystalline Polymers ◽  
Polyamide 12 ◽  
Poly Vinylidene Fluoride ◽  
Static Tensile ◽  
Internal Mixer ◽  
Morphology And Mechanical Properties

Morphology and mechanical properties of polyamide 12 (PA12)/poly(vinylidene fluoride) (PVDF) blends The morphology, thermal and mechanical properties of polyamide 12 (PA12)/poly(vinylidene fluoride) (PVDF) blends were investigated. These polymers are engineering, semi-crystalline polymers which are reciprocally immiscible. Differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA) and scanning electron microscopy (SEM) were used to characterize the polymeric materials. Mechanical properties were examined by static tensile test. The investigations demonstrate that blends with higher amount of PVDF, with the morphology of two co-continuous semicristalline phases, exhibit better mechanical properties. The blends with small content of PVDF and prepared by extrusion show the morphology of small separated domains of PVDF and full continuous PA phase. The morphology of these blends is different than the blends prepared by internal mixer and have better mechanical properties too. Thus they can be used in particular applications without a compatibilizing agent.

Determination of Morphology and Mechanical Properties of Polyhedral Oligomeric Silsequioxane (POSS) Based on Poly(vinylidene fluoride) Matrix

2013 ◽  
Vol 422 ◽  
pp. 15-19
Author(s):  
Yi Zhi Liu ◽  
Yi Sun ◽  
Fan Lin Zeng ◽  
Jing Cang Liu
Keyword(s):  
Mechanical Properties ◽  
Positive Reinforcement ◽  
Vinylidene Fluoride ◽  
Mechanical Analysis ◽  
Polyhedral Oligomeric Silsesquioxanes ◽  
Reinforcing Agent ◽  
Poly Vinylidene Fluoride ◽  
Pvdf Matrix ◽  
Morphology And Mechanical Properties

In this paper, different amounts of fluoropropyl polyhedral oligomeric silsesquioxanes (FP-POSS) were incorporated into the poly (vinylidene fluoride) (PVDF) matrix by the solvent evaporation method. Influence of FP-POSS on morphology and mechanical properties of PVDF matrix was investigated. Good dispersion between FP-POSS and PVDF was achieved up to 8 wt% of nanofiller. The mechanical testing and dynamic mechanical analysis showed that low FP-POSS content induced a positive reinforcement effect on mechanical property in the formed composites. The results also indicated the existence of the optimal formula for producing POSS polymer composites, and POSS owning to its unique organic-inorganic structure can act as a plasticizer or as a reinforcing agent on the basis of interactions between filler and polymer.

The Irradiation Crosslinking of Poly(vinylidene fluoride-​chlorotrifluoroethylene)

2014 ◽  
Vol 716-717 ◽  
pp. 7-10
Author(s):  
Jian Chen
Keyword(s):  
Mechanical Properties ◽  
Storage Modulus ◽  
Ultraviolet Irradiation ◽  
Vinylidene Fluoride ◽  
Loss Modulus ◽  
Great Influence ◽  
Poly Vinylidene Fluoride ◽  
Content Support

Vinylidenefluoride (VDF) and chlorotrifluoroethylene (CTFE) copolymers were crosslinked by ultraviolet irradiation, chlorotrifluoroethylene content has a great influence on the crosslinked copolymers, high CTFE content support more joint pots, the properties of the copolymer shows higher storage modulus, the loss modulus gets smaller. The copolymer mechanical properties gets much higher.

Three-Dimensional Graphite Filled Poly(Vinylidene Fluoride) Composites with Enhanced Strength and Thermal Conductivity

2020 ◽  
Vol 842 ◽  
pp. 63-68
Author(s):  
Xiao Zhang ◽  
Jian Zheng ◽  
Yong Qiang Du ◽  
Chun Ming Zhang
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Energetic Materials ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
3D Structure ◽  
Three Dimensional ◽  
3D Network ◽  
Poly Vinylidene Fluoride ◽  
Polymer Bonded Explosives

Three-dimensional (3D) network structure has been recognized as an efficient approach to enhance the mechanical and thermal conductive properties of polymeric composites. However, it has not been applied in energetic materials. In this work, a fluoropolymer based composite with vertically oriented and interconnected 3D graphite network was fabricated for polymer bonded explosives (PBXs). Here, the graphite and graphene oxide platelets were mixed, and self-assembled via rapid freezing and using crystallized ice as the template. The 3D structure was finally obtained by freezing-dry, and infiltrating with polymer. With the increasing of filler fraction and cooling rate, the thermal conductivity of the polymer composite was significantly improved to 2.15 W m-1 K-1 by 919% than that of pure polymer. Moreover, the mechanical properties, such as tensile strength and elastic modulus, were enhanced by 117% and 563%, respectively, when the highly ordered structure was embedded in the polymer. We attribute the increased thermal and mechanical properties to this 3D network, which is beneficial to the effective heat conduction and force transfer. This study supports a desirable way to fabricate the strong and thermal conductive fluoropolymer composites used for the high-performance polymer bonded explosives (PBXs).

Study on Morphology Features and Mechanical Properties of Nanofibers Films Prepared by Different Composite Electrospinning Methods

2020 ◽  
Vol 841 ◽  
pp. 70-75
Author(s):  
Chao He ◽  
Han Wang ◽  
Li Xiong Huang ◽  
Ping Wang ◽  
Wei Gao
Keyword(s):  
Mechanical Properties ◽  
Thermoplastic Polyurethane ◽  
Composite Films ◽  
Thickness Measurement ◽  
Important Process ◽  
Composite Methods ◽  
Wide Range ◽  
The Given ◽  
Composite Mode ◽  
Morphology And Mechanical Properties

Electrospinning is an important method for preparing nanofibers, which are highly promising for applications in a wide range of fields such as purification/filtration, photoelectric devices, battery separators, catalysis and tissue engineering. These applications often use composite materials and have specific requirements for mechanical properties. Therefore, how to get nanofibers films with ideal mechanical properties by changing the composite mode is an important process problem for the given two or more materials. Based on the far-field electrospinning, this study selected polyacrylonitrile (PAN) and thermoplastic polyurethane (TPU) to explore the differences of three composite methods: mixed spinning, multi-nozzle simultaneous spinning and superposition spinning. Three kinds of analysis can be seen in this study, which include morphology features, thickness measurement and mechanical properties of samples. Multi-nozzle simultaneous spinning has very limited changes. Mixed spinning and superposition spinning are beneficial to the improvement of nanofibers films morphology and mechanical properties. Among them, the composite films through superposition spinning are thinner.

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