Effect and origin of the structure of hyperbranched polysiloxane on the surface and integrated performances of grafted Kevlar fibers

Zhang, Hongrui; Yuan, Li; Liang, Guozheng; Gu, Aijuan

doi:10.1016/j.apsusc.2014.09.145

Cited by 16 publications

(3 citation statements)

References 61 publications

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“…Second, the selection of methacryloxy propyltrimethoxysilane (MAPS) as the silane precursor for HBPSi is based on the ethylene groups of MAPS can be copolymerized with MMA; thus, the structure of the hybrid materials can be adjusted through molecular engineering. At the same time, HBPSi with different structures can be rapidly and economically synthesized by the self‐hydrolysis of MAPS or co‐hydrolysis with other silanes, making it possible to prepare highly transparent PMMA with different performance requirements to meet different application scenarios 15,20,32,33 . Finally, high‐energy γ‐ray‐radiation‐induced polymerization at room temperature solves the shortcomings caused by the large sample size and high content of HBPSi during the curing process.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, HBPSi with different structures can be rapidly and economically synthesized by the self-hydrolysis of MAPS or cohydrolysis with other silanes, making it possible to prepare highly transparent PMMA with different performance requirements to meet different application scenarios. 15,20,32,33 Finally, high-energy γ-ray-radiation-induced polymerization at room temperature solves the shortcomings caused by the large sample size and high content of HBPSi during the curing process. The morphology and characteristics of PMMA-HBPSi hybrid, including its thermal, optical, and dielectric properties, were systematically investigated.…”

Section: Introductionmentioning

confidence: 99%

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Poly(methyl methacrylate)/hyperbranched polysiloxane hybrid prepared by gamma‐radiation polymerization: Thermal stability, optical transparence, and UV shielding

Dong,

Mao,

Liang

et al. 2023

J of Applied Polymer Sci

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It is challenging to endow poly(methyl methacrylate) (PMMA) with good dielectric properties and UV absorption capacity while simultaneously overcoming its poor heat resistance. Herein, we report for the first time a novel organic–inorganic hybrid (PMMA‐HBPSi) derived from methyl methacrylate (MMA) and hyperbranched polysiloxane (HBPSi) fabricated via γ‐radiation curing. The typical properties (thermal stability, optical characteristics, and dielectric properties) of the hybrids were systematically investigated and discussed. The results demonstrated that the incorporation of HBPSi into the PMMA resin not only increased the thermal resistance, dimensional stability, and dielectric properties but also remarkably reduced the UV transmittance. Specifically, in comparison with pure PMMA, the initial degradation temperature (Tdi) of PMMA‐HBPSi increased by 31°C, with no phase transition occurred in a temperature range of 60–230°C, thus illustrating a significant improvement in the glass‐transition temperature. Moreover, the thermal expansion coefficient decreased by 86.9% at temperatures exceeding 118°C. The UV transmittance of PMMA was also found to decrease by 80% at 295 nm after the introduction of HBPSi. These attractive features of PMMA‐HBPSi demonstrate that the new approach proposed here is suitable for developing high‐performance organic glasses for optical, aviation, and electronic applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Poly(methyl methacrylate)/hyperbranched polysiloxane hybrid prepared by gamma‐radiation polymerization: Thermal stability, optical transparence, and UV shielding

Dong,

Mao,

Liang

et al. 2023

J of Applied Polymer Sci

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“…Extensive research has been devoted to the surface treatment of Kevlar fibers. Among the applied techniques, chemical grafting exhibits promising potential [ 5 , 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Properties of Kevlar Fabric/Epoxy Composites Containing Aluminosilicates Modified with Quaternary Ammonium and Phosphonium Salts

Oliwa

2020

Materials

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We investigated the effect of modified aluminosilicates, including bentonite from Armenia (BA) modified with quaternary ammonium salts (BAQAS) and phosphonium salts (BAQPS), on the mechanical properties and morphology of Kevlar/epoxy composites. The Kevlar/epoxy composites containing 1.0 or 3.0 wt.% modified bentonites were fabricated using the hand lay-up technique. The mechanical properties, including the tensile, flexural, and in-plane shear strength, were tested. Based on the obtained results, we found that the mechanical properties increased with modified bentonite loading. The best results were obtained for composites containing 3 wt.% BAQAS, as most of the mechanical properties were significantly improved (tensile strength 302.9 MPa (+30%), Young’s modulus 16.3 GPa (+17%), flexural modulus 23.4 GPa (+12.5%), in-plane shear strength 22.8 MPa (+24.5%), and in-plane shear modulus 677.2 MPa (+42%)). The obtained improvements in the mechanical properties are attributed to the uniform dispersion of the filler, which was confirmed by the highest increase in the intergallery spacing, from 28.3 Å for BAQAS to 45.1 Å for the composite with 3 wt.% BAQAS. Scanning electron microscopy (SEM) analysis of the brittle fracture surface indicated that the addition of modified bentonite to the epoxy matrix changed the morphology of the Kevlar/epoxy/organoclay composites and improved the fiber–matrix interfacial adhesion.

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Building unique surface structure on aramid fibers through a green layer-by-layer self-assembly technique to develop new high performance fibers with greatly improved surface activity, thermal resistance, mechanical properties and UV resistance

Zhou¹,

Yuan²,

Guan³

et al. 2017

Applied Surface Science

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Effect and origin of the structure of hyperbranched polysiloxane on the surface and integrated performances of grafted Kevlar fibers

Cited by 16 publications

References 61 publications

Poly(methyl methacrylate)/hyperbranched polysiloxane hybrid prepared by gamma‐radiation polymerization: Thermal stability, optical transparence, and UV shielding

Poly(methyl methacrylate)/hyperbranched polysiloxane hybrid prepared by gamma‐radiation polymerization: Thermal stability, optical transparence, and UV shielding

The Mechanical Properties of Kevlar Fabric/Epoxy Composites Containing Aluminosilicates Modified with Quaternary Ammonium and Phosphonium Salts

Building unique surface structure on aramid fibers through a green layer-by-layer self-assembly technique to develop new high performance fibers with greatly improved surface activity, thermal resistance, mechanical properties and UV resistance

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