Mechanical properties of rigid polyurethane composites reinforced with surface treated ultrahigh molecular weight polyethylene fibers

Abstract

The mechanical properties of ultrahigh molecular weight polyethylene (UHMWPE) fibers reinforced rigid polyurethane (PU) composites were studied, and the effects of the fiber surface treatment and the mass fraction were discussed. Chromic acid was used to treat the UHMWPE fibers, and polyurethane composites were prepared with 0.1 to 0.6 wt% as-received and treated UHMWPE fibers. Attenuated total reflection Fourier transform infrared demonstrated that oxygen-containing functional groups were efficiently grafted to the fiber surface. The mechanical performance tests of the UHMWPE fibers/PU composites were conducted, and the results revealed that the treated UHMWPE fibers/PU composites had better tensile, compression, and bending properties than as-received UHMWPE fibers/PU composites. Thermal gravimetric analyzer showed that the thermal stability of the treated fiber composites were improved. The interface bonding of PU composites were investigated by scanning electron microscopy and dynamic mechanical analysis, and the results indicated that the surface modification of UHMWPE fiber could improve the interaction between fiber and PU, which played a positive role in mechanical properties of composites.

A review on recent advances in sandwich structures based on polyurethane foam cores

“…Consequently, it is important to manufacture polyurethane foams (PUFs) for high‐performance applications . One of the major ways of producing PUFs with superior strength in recent years has been to use reinforcements of different kinds, such as nanoparticles like carbon nanotubes, carbides, fibers, fabrics and bio additives . Depending on the type of reinforcement, the resulting Polyurethane Composites (PUCs) exhibit remarkable properties, such as high‐impact resistance, low density, high strength to weight ratio, high elasticity, and corrosion and abrasion resistance …”

Study of UHMWPE Fiber Surface Modification and the Properties of UHMWPE/Epoxy Composite

“…In Figure 8, the broad bands at 2918 cm −1 and 2850 cm −1 belong to the Asymmetric and Symmetric Stretching Absorption of -CH 2 -, respectively; the broad bands at 1465 cm −1 and 720 cm −1 belong to the bending and rocking deformation absorption of -CH 2 -, respectively [31]. Compared with unmodified UHMWPE fiber, three new absorption peaks are observed at around 1715 cm −1 , 1175 cm −1 and 1050 cm −1 in method F-b and method F-f, which belongs to the characteristic absorption of the C=O [32], C-O-C and -OH, respectively.…”

Influence of Plasma-Chemical Treatment of Uhmwpe Fibers on the Degree of Swelling of Polymeric Composite Materials Based on Polyurethane.

“…It should be noted that in most cases, PCM products do not possess the maximum level of strength properties in comparison with other materials, but in the aggregate of various parameters they surpass many others. As an example, we can cite carbon fiber plastics and fiberglass, which have a combination of lightness and strength (Meng, Li, Ma, Cao, Wang, 2018).…”