Preparation, characterization and properties of fiber reinforced composites using silicon-containing hybrid polymers

Abstract

A novel glass fiber reinforced composite was prepared by using silicon‐containing hybrid polymers, poly(methylhydrogen‐diethynylsilyene) (PMES) and poly(phenylethynyl‐silyloxide‐phenylborane) (APABS), as matrix resins. The curing behavior and rheological properties of the matrix resins were investigated by differential scanning calorimetry (DSC) and rotational rheometer. The dynamic viscoelastic properties, mechanical properties, and microstructures of the composites were studied by dynamic mechanical analysis (DMA), universal testing machine (UTM), and scanning electron microscopy (SEM), respectively. The results show that the composite can be well cured between 200 and 300 °C through reactive groups like Si‐H, N‐H, and C≡C units, the possible thermosetting mechanism is also proposed. The composites exhibit excellent mechanical properties with bending strength reach up to 261 and 178 MPa before and after heat‐treating, respectively. SEM analysis clearly indicates that crack in the matrix, matrix/fiber interface debonding, and fiber pull out are predominate failure mechanism for the composites which are heat‐treated in different temperatures. All these obtained results can give theoretical guiding reference for their further applications. Copyright © 2016 John Wiley & Sons, Ltd.

Preparation, flame retardancy, and mechanical properties of flame-retardant glass fibre reinforced epoxy composites

“…For GFRP-M/0.0 (Figure 5(a)), a lot of matrix/fibres were exposed and pulled out, leaving large holes in the fracture surfaces. However, it could be observed that the fracture surfaces of GFRP-M/2.5 (Figure 5(b)) showed a few exposed fibres and the matrix firmly adhere to the surface of fibres, indicating that the interfacial bonding interactions between the fibres and the matrix were strong and very stable [20]. Although there were some fibres exposed for the fracture surfaces of GFRP-M/5.0 (Figure 5(c)), the fibres still remain embedded in the matrix.…”

Characterization of a novel silicon‐containing hybrid polymer by thermal curing, pyrolysis behavior, and fluorescence analysis

“…[1][2][3][4][5] Various kinds of silicon-containing polymers with reactive C C or Si H linkages have been reported as functional materials, which show excellent high temperature resistance, processability, mechanical, and optical properties as a result of their highly crosslinked network structures formed during thermal curing reaction. [6][7][8][9] Guo et al 10 investigated the thermal curing and degradation behavior of silicon-containing aryacetylene (PSAS) with different substituents (such as Si H and Si CH CH 2 ). They found that the crosslinked structures of PSAS mainly contained phenyl rings and aromatic fused rings, which formed from cyclotrimerization and Diels-Alder reaction of C C and Si C C. Kolel-Veetil et al 11 synthesized a novel kind of poly(carborane-siloxane-arylacetylene) (PCSAA), namely m-PCSAA and p-PCSAA by the reaction of the dimagnesium salts of m-diethynylbenzene or p-diethynylbenzene with 1,7-bis(chlorotetramethyldisiloxyl)-mcarborane.…”

“…Novel silicon‐based organic hybrid polymers have attracted intensive and varied interest due to their widely applications in the areas of ceramic precursors, optical materials, solar cells, conducting materials, composite materials, and so forth . Various kinds of silicon‐containing polymers with reactive CC or SiH linkages have been reported as functional materials, which show excellent high temperature resistance, processability, mechanical, and optical properties as a result of their highly crosslinked network structures formed during thermal curing reaction . Guo et al .…”