Hybrid multi-scale thermoplastic composites reinforced with interleaved nanofiber mats using in-situ polymerization of cyclic butylene terephthalate

2019 ◽  
Vol 12 ◽  
pp. 91-97 ◽  
Author(s):  
Yong Zhao ◽  
Xiaojing Ma ◽  
Tao Xu ◽  
David R. Salem ◽  
Hao Fong
Keyword(s):  
In Situ Polymerization ◽  
Thermoplastic Composites ◽  
Butylene Terephthalate ◽  
Multi Scale ◽  
Cyclic Butylene Terephthalate ◽  
Nanofiber Mats

Preparation and Characterization of In Situ Polymerized Cyclic Butylene Terephthalate and its Composites

2015 ◽  
Vol 813 ◽  
pp. 258-264
Author(s):  
Lu Zhang ◽  
Li Min Zhou ◽  
Ji Feng Zhang ◽  
Bin Yang ◽  
Shao Hua Fan
Keyword(s):  
Mechanical Property ◽  
In Situ Polymerization ◽  
Thermoplastic Composites ◽  
Degree Of Crystallinity ◽  
Fiber Volume ◽  
Melt Viscosity ◽  
Butylene Terephthalate ◽  
Cyclic Butylene Terephthalate ◽  
The Matrix

A fatal disadvantage of continuously reinforced thermoplastic composites is the high melt viscosity of the matrix which hampers impregnation. However, the melt viscosity of low molecular weight CBT resin can reach extremely low value, which simplifies impregnation and enables the use of thermoset production methods. The thermal analysis, rheological analysis and mechanical property on the polymerization and crystallization of CBT into poly (cyclic butylene terephthalate) (PCBT) at different ratios of catalyst were investigated in this paper. The continuous glass fiber (GF) reinforced PCBT composite with over 70% fiber volume content was prepared via in situ polymerization, and the mechanical property of the PCBT was studied. The best impregnation time was decreased and the degree of crystallinity was increased respectively with catalyst fraction increasing. The tensile/flexural strength and modulus of PCBT resin and GF/PCBT composites were enhanced when the catalyst fraction increased from 0.3% to 0.6%.

EVA/PBT nanostructured blends synthesized by in situ polymerization of cyclic cBT (cyclic butylene terephthalate) in molten EVA

Polymer ◽  
2009 ◽  
Vol 50 (12) ◽  
pp. 2527-2534 ◽  
Author(s):  
Walid Bahloul ◽  
Véronique Bounor-Legaré ◽  
Françoise Fenouillot ◽  
Philippe Cassagnau
Keyword(s):  
In Situ Polymerization ◽  
Butylene Terephthalate ◽  
Cyclic Butylene Terephthalate

Rheological and Ultrasonic Monitoring of the In-situ Polymerization of Cyclic Butylene Terephthalate

2008 ◽  
Author(s):  
Abdessalem Derdouri ◽  
Jacques Tatibouet ◽  
Pierre Sammut ◽  
Albert Co ◽  
Gary L. Leal ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Ultrasonic Monitoring ◽  
Butylene Terephthalate ◽  
Cyclic Butylene Terephthalate

Mechanical Properties of Thermoplastic Composites via In Situ Polymerization from Cyclic Oligomers

2013 ◽  
Vol 750-752 ◽  
pp. 7-10
Author(s):  
Kou An Hao ◽  
Zhen Qing Wang ◽  
Li Min Zhou
Keyword(s):  
Mechanical Properties ◽  
In Situ Polymerization ◽  
High Viscosity ◽  
Thermoplastic Composites ◽  
Thermoplastic Matrix ◽  
Polymerization Catalyst ◽  
Short Beam ◽  
Beam Shear ◽  
Cyclic Oligomers

Fiber impregnation has been the main obstacle for thermoplastic matrix with high viscosity. This problem could be surmounted by adapting low viscous polymeric precursors Woven basalt fabric reinforced poly (butylenes terephthalate) composites were produced via in-situ polymerization at T=210°C. Before polymerization, catalyst was introduced to the reinforcement surface with different concentration. DSC is used to determine the polymerization and crystallization. SEM is used to detect whether the catalyst existed on surface. Both flexural and short-beam shear test are employed to study the corresponding mechanical properties.

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