Practice for Testing Pultruded Composites

2019 ◽  
Author(s):  
Keyword(s):  
2019 ◽  
Author(s):  
Liang Chen ◽  
James Thompson-Colón, ◽  
Alan Bushmire ◽  
Nathan Chaffin ◽  
Dan Williams ◽  
...  

2009 ◽  
Vol 79-82 ◽  
pp. 2223-2226
Author(s):  
Ayman S. Mosallam

One of the major limitations for wider use of pultruded fiber reinforced polymeric (PFRP) composites in the civil engineering sector has been their behavior under elevated temperature and ultimately fire. This limitation arises not only due to the reduction in mechanical properties at high temperatures, including increased propensity to creep, but also due to limitations on the continuous working temperature causing permanent damage to the material as a result of thermal and oxidative degradation. Significant gains in property retention at high temperatures with crystalline polymers have been derived from the incorporation of fibrous reinforcement, but the development of new polymer matrices is the key for further elevation of the useful temperature range. This paper presents summary results of a research project focused on characterizing the viscoelastic behavior of commercially-produced, off-the-shelf unidirectional PFRP materials subjected to elevated temperature environments.


2021 ◽  
pp. 801-808
Author(s):  
Zongjun Li ◽  
Amar Khennane ◽  
Hongxu Wang ◽  
Paul J. Hazell ◽  
Juan Pablo Escobedo-Diaz

2001 ◽  
Vol 22 (4) ◽  
pp. 555-567 ◽  
Author(s):  
K. Van Den Abeele ◽  
J. Carmeliet ◽  
K. Van De Velde

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 463 ◽  
Author(s):  
Ke Chen ◽  
Mingyin Jia ◽  
Hua Sun ◽  
Ping Xue

In this paper, glass fiber-reinforced polyamide-6 (PA-6) composites with up to 70 wt% fiber contents were successfully manufactured using a pultrusion process, utilizing the anionic polymerization of caprolactam (a monomer of PA-6). A novel thermoplastic reaction injection pultrusion test line was developed with a specifically designed injection chamber to achieve complete impregnation of fiber bundles and high speed pultrusion. Process parameters like temperature of injection chamber, temperature of pultrusion die, and pultrusion speed were studied and optimized. The effects of die temperature on the crystallinity, melting point, and mechanical properties of the pultruded composites were also evaluated. The pultruded composites exhibited the highest flexural strength and flexural modulus, reaching 1061 MPa and 38,384 MPa, respectively. Then, effects of fiber contents on the density, heat distortion temperature, and mechanical properties of the composites were analyzed. The scanning electron microscope analysis showed the great interfacial adhesion between fibers and matrix at 180 °C, which greatly improved the mechanical properties of the composites. The thermoplastic reaction injection pultrusion in this paper provided an alternative for the preparation of thermoplastic composites with high fiber content.


2002 ◽  
Vol 23 (5) ◽  
pp. 947-956 ◽  
Author(s):  
Shoujie Li ◽  
Zhongman Ding ◽  
Liqun Xu ◽  
L. James Lee ◽  
Herbert Engelen

2008 ◽  
Vol 2008 (0) ◽  
pp. _GS0202-1_-_GS0202-2_
Author(s):  
Yuya HIDEKUMA ◽  
Syunsuke TERAOKA ◽  
Asami NAKAI ◽  
Hiroyuki HAMADA
Keyword(s):  

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