Resin transfer molding of hemp fiber composites: optimization of the process and mechanical properties of the materials

Ceramic-fiber composites have important applications in protection field. In this work, the stable and reliable resin reinforced fiber-ceramic-fiber (RRFCF) composites with sandwich structure were prepared by using the vacuum assisted resin transfer molding (VARTM) process. The mechanical properties of the prepared RRFCF composites with different configurations were studied. Results showed that the thickness values of the glassfiber-reinforced plastic layers (panel thickness: ta and backplane thickness: tc) had significant influences on the unique mechanical properties of the RRFCF composites. The stress distribution of RRFCF composites with different configurations under loading was analyzed by simulation. The fatigue behaviors of Z-type (ta < tc) and F-type (ta > tc) RRFCF composites were investigated and found to be in good agreement with the simulated results. Moreover, the flexural strength and modulus of Z-type composites were obtained and found to be higher than those of F-type composites. These results have important guiding significance for the engineering application of RRFCF composites.

Download Full-text

Mechanical properties in glass fiber PVC-foam sandwich structures from different chopped fiber interfacial reinforcement through vacuum-assisted resin transfer molding (VARTM) processing

Composites Science and Technology ◽

10.1016/j.compscitech.2017.03.033 ◽

2017 ◽

Vol 144 ◽

pp. 202-207 ◽

Cited By ~ 24

Author(s):

Qihui Chen ◽

Ting Linghu ◽

Yingju Gao ◽

Zhi Wang ◽

Yaqing Liu ◽

...

Keyword(s):

Mechanical Properties ◽

Glass Fiber ◽

Sandwich Structures ◽

Resin Transfer Molding ◽

Transfer Molding

Download Full-text

Effect of Press Condition on the Mechanical Properties of GFRTP Molded by the Melted Thermoplastic-Resin Transfer Molding

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.774.367 ◽

2018 ◽

Vol 774 ◽

pp. 367-372

Author(s):

Kazuto Tanaka ◽

Akihiro Hirata ◽

Tsutao Katayama

Keyword(s):

Mechanical Properties ◽

Shell Structure ◽

Low Cost ◽

Resin Transfer Molding ◽

Outer Shell ◽

Fiber Reinforced ◽

Thermoplastic Resin ◽

Transfer Molding ◽

Reinforced Thermoplastics ◽

Fiber Reinforced Thermoplastics

The application of Fiber Reinforced Thermoplastics (FRTP) is expected to reduce the weight of automobiles. The press and injection hybrid molding method was developed to mold FRTP with high strength and high stiffness by giving complicated shapes such as ribs and bosses to the outer shell structure of FRTP with continuous fiber. However, as this method uses high-cost FRTP laminated sheets, it is necessary to develop a low-cost FRTP manufacturing process. In this study, we aim at the development of Melted Thermoplastic-Resin Transfer Molding (MT-RTM) to mold FRTP with complicated shape at low cost by injecting melted short fiber reinforced thermoplastics into dry fabric. The effects of press condition on the mechanical properties of GFRTP molded by MT-RTM were clarified by bending tests. GFRTP molded at high mold temperature and high closing speed showed high mechanical properties because of good impregnation of injection resin into continuous fabric in the outer shell structure.

Download Full-text

Dynamic mechanical properties of sisal fiber reinforced polyester composites fabricated by resin transfer molding

Polymer Composites ◽

10.1002/pc.20611 ◽

2009 ◽

Vol 30 (6) ◽

pp. 768-775 ◽

Cited By ~ 20

Author(s):

P.A. Sreekumar ◽

Redouan Saiah ◽

Jean Marc Saiter ◽

Nathalie Leblanc ◽

Kuruvilla Joseph ◽

...

Keyword(s):

Mechanical Properties ◽

Resin Transfer Molding ◽

Dynamic Mechanical Properties ◽

Sisal Fiber ◽

Fiber Reinforced ◽

Transfer Molding ◽

Dynamic Mechanical ◽

Polyester Composites

Download Full-text

Porosity Reduction in the High-Speed Processing of Glass-Fiber Composites by Resin Transfer Molding (RTM)

Journal of Composite Materials ◽

10.1177/0021998304038649 ◽

2004 ◽

Vol 38 (3) ◽

pp. 195-226 ◽

Cited By ~ 26

Author(s):

Harry J. Barraza ◽

Youssef K. Hamidib ◽

Levent Aktasb, ◽

Edgar A. O’Rear ◽

M. C. Altan

Keyword(s):

Glass Fiber ◽

High Speed ◽

Resin Transfer Molding ◽

Fiber Composites ◽

Transfer Molding ◽

Glass Fiber Composites ◽

Porosity Reduction

Download Full-text

EVALUATION OF MECHANICAL PROPERTIES OF CFRP BY VARTM AND ITS APPLICATION

International Journal of Modern Physics B ◽

10.1142/s0217979206040556 ◽

2006 ◽

Vol 20 (25n27) ◽

pp. 3896-3901 ◽

Cited By ~ 2

Author(s):

YUN-HAE KIM ◽

JIN-HO SON ◽

BYUNG-KUN CHOI ◽

YOUNG-DAE JO ◽

KUK-JIN KIM ◽

...

Keyword(s):

Mechanical Properties ◽

Physical Properties ◽

Resin Transfer Molding ◽

Mechanical Tests ◽

Resin Content ◽

Automobile Engine ◽

Transfer Molding ◽

Mechanical And Physical Properties ◽

Physical Tests ◽

Vartm Process

In the present study, we contrast the change of mechanical and physical properties between VaRTM (Vacuum Assisted Resin Transfer Molding) and hand lay-up process. In the results of mechanical tests, VaRTM specimen is stronger than hand lay-up specimen and hand lay-up specimen became delamination. In the results of physical tests, the resin content of VaRTM specimen is lower than hand lay-up specimen. On micrograph, the strength of specimen by VaRTM between fiber and resin is stronger than that of one by hand lay-up. And the specimen by hand lay-up contains more defects than one by VaRTM. So, VaRTM process can practically apply for automobile engine hood. This paper shows that VaRTM process is one of the most suitable processes for composite parts of automobile.

Download Full-text