Study on interfacial adhesion of the aramid fibers/rubber matrix by grafting mercapto hyperbranched polysiloxane

2020 ◽  
Vol 81 ◽  
pp. 106259 ◽  
Author(s):  
Xuan Yang ◽  
Qunzhang Tu ◽  
Xinmin Shen ◽  
Chengming Jiang ◽  
Ming Pan ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Rubber Matrix ◽  
Aramid Fibers ◽  
Hyperbranched Polysiloxane

Unique surface modified aramid fibers with improved flame retardancy, tensile properties, surface activity and UV-resistance through in situ formation of hyperbranched polysiloxane–Ce0.8Ca0.2O1.8 hybrids

2015 ◽  
Vol 3 (23) ◽  
pp. 12515-12529 ◽  
Author(s):  
Xiaoling Zhu ◽  
Li Yuan ◽  
Guozheng Liang ◽  
Aijuan Gu
Keyword(s):  
Tensile Properties ◽  
Surface Activity ◽  
Flame Retardancy ◽  
Uv Resistance ◽  
Aramid Fibers ◽  
Hyperbranched Polysiloxane ◽  
In Situ Formation ◽  
Surface Modified ◽  
Unique Surface

Unique aramid fibers with hyperbranched polysiloxane–Ce0.8Ca0.2O1.8 hybridized coating were prepared, which have outstanding flame retardancy, tensile properties, surface activity and UV-resistance owing to the nature and synergistic effect of hybrids.

scholarly journals Microwave induced hierarchical nanostructures on aramid fibers and their influence on adhesion properties in a rubber matrix

2017 ◽  
Vol 410 ◽  
pp. 145-153 ◽  
Author(s):  
S. Palola ◽  
E. Sarlin ◽  
S. Kolahgar Azari ◽  
V. Koutsos ◽  
J. Vuorinen
Keyword(s):  
Rubber Matrix ◽  
Aramid Fibers ◽  
Adhesion Properties ◽  
Hierarchical Nanostructures

scholarly journals A Novel Method for Deposition of Multi-Walled Carbon Nanotubes onto Poly(p-Phenylene Terephthalamide) Fibers to Enhance Interfacial Adhesion with Rubber Matrix

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 374 ◽  
Author(s):  
Xuan Yang ◽  
Qunzhang Tu ◽  
Xinmin Shen ◽  
Pengxiao Zhu ◽  
Yi Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Interfacial Adhesion ◽  
Polar Solvent ◽  
Contact Angles ◽  
Rubber Matrix ◽  
Chemical Structures ◽  
Multi Walled Carbon Nanotubes ◽  
Novel Method ◽  
Walled Carbon Nanotubes ◽  
Epoxy Groups

In order to enhance the interfacial adhesion of poly(p-phenylene terephthalamide) (PPTA) fibers to the rubber composites, a novel method to deposit multi-walled carbon nanotubes (MWCNTs) onto the surface of PPTA fibers has been proposed in this study. This chemical modification was performed through the introduction of epoxy groups by Friedel–Crafts alkylation on the PPTA fibers, the carboxylation of MWCNTs, and the ring-opening reaction between the epoxy groups and the carboxyl groups. The morphologies, chemical structures, and compositions of the surface of PPTA fibers were characterized by scanning electron microscope, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The results showed that MWCNTs were uniformly deposited onto the surface of PPTA fibers with the covalent bonds. The measurement of contact angles of the fibers with polar solvent and non-polar solvent indicated that the surface energy of deposited fibers significantly increased by 41.9% compared with the untreated fibers. An electronic tensile tester of single-filament and a universal testing machine were utilized to measure the strength change of the fibers after modification and the interfacial adhesion between the fibers and the rubber matrix, respectively. The results showed that the tensile strength had not been obviously reduced, and the pull-out force and peeling strength of the fibers to the rubber increased by 46.3% and 56.5%, respectively.

scholarly journals Enhancing the Interfacial Adhesion with Rubber Matrix by Grafting Polydopamine-Carbon Nanotubes onto Poly(p-phenylene terephthalamide) Fibers

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1231 ◽  
Author(s):  
Xuan Yang ◽  
Qunzhang Tu ◽  
Xinmin Shen ◽  
Qin Yin ◽  
Ming Pan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Interfacial Adhesion ◽  
Testing Machine ◽  
Rubber Matrix ◽  
Step Method ◽  
Single Filament ◽  
Chemical Structures ◽  
Pull Out ◽  
One Step ◽  
The One

To enhance the interfacial adhesion between poly(p-phenylene terephthalamide) (PPTA) fibers and a rubber matrix without damaging the fiber structures, aminated carbon nanotubes (NH2-CNTs) were mildly deposited onto the fiber surface by combining the biomimetic modification of dopamine via the Michael addition reaction. Furthermore, differences between the “one-step” method and the “two-step” method were researched through adjusting the addition sequence of NH2-CNTs. The surface morphologies and chemical structures of PPTA fibers before and after modification were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The mechanical properties of fibers and the adhesive properties with rubber were tested using an electronic tensile tester of single-filament and universal testing machine, respectively. After modification by the “one-step” method for 24 h, the single-filament tensile strength of the modified fibers increased by 16.5%, meanwhile, the pull-out force of the modified fibers to rubber increased by approximately 59.7%. Compared with the “two-step” method, the “one-step” method had superiority due to the short reaction time and the large deposition rate of CNTs.

scholarly journals Investigation of Dispersion, Interfacial Adhesion of Isotropic and Anisotropic Filler in Polymer Composite

2021 ◽  
Vol 11 (18) ◽  
pp. 8561
Author(s):  
Sneha Samal ◽  
Ignazio Blanco
Keyword(s):  
Polymer Matrix ◽  
Interfacial Adhesion ◽  
Simulation Method ◽  
Spherical Particles ◽  
Rubber Matrix ◽  
Anisotropic Particles ◽  
Uniform Size ◽  
Boundary Area ◽  
Surface Features ◽  
Contact Points

The movement of isotropic and anisotropic particles of iron and graphite within the polymer matrix was predicted and examined by the COMSOL simulation method. The interfacial adhesion of filler particles within the matrix was investigated under surface features observation. Carbonyl Iron (CI) particles, considered to be regular with a uniform size of (1–5 µm), were mixed with irregular particles of graphite (20–150 µm) with 30 V% in quantity in a silicone rubber matrix. The particle–matrix and particle–particle interactions were analyzed from the inner surface features. The drag of non-spherical particles and particle Reynolds numbers (Rep) were taken into consideration in point force models for both the Stokes (Rep ≪ 1) and Newton regime for particle shape. Newton regime is based on the aspect ratio for particles with regular and irregular shapes. The boundary area of the irregular particles holds like an anchor inside the polymer matrix for strong adhesion; however, regular particles have partial attachment due to the gravitational pull of attraction from the bottom contact points. However, uniform distribution of isotropic particles has been observed in comparison to the anisotropic particles within the polymer matrix.

scholarly journals Layer-by-Layer Self-Assembly Strategy for Surface Modification of Aramid Fibers to Enhance Interfacial Adhesion to Epoxy Resin

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 820 ◽  
Author(s):  
Zhaomin Li ◽  
Baihua Liu ◽  
Haijuan Kong ◽  
Muhuo Yu ◽  
Minglin Qin ◽  
...  
Keyword(s):  
Shear Strength ◽  
Epoxy Resin ◽  
Self Assembly ◽  
Interfacial Adhesion ◽  
Layer By Layer ◽  
Resin Composites ◽  
Aramid Fibers ◽  
Before And After ◽  
Assembly Technology ◽  
Epoxy Resin Composites

In this work, the layer-by-layer self-assembly technology was used to modify aramid fibers (AFs) to improve the interfacial adhesion to epoxy matrix. By virtue of the facile layer-by-layer self-assembly technique, poly(l-3,4-Dihydroxyphenylalanine) (l-PDOPA) was successfully coated on the surface of AFs, leading to the formation of AFs with controllable layers (nL-AF). Then, a hydroxyl functionalized silane coupling agent (KH550) was grafted on the surface of l-PDOPA coated AFs. The properties such as microstructure and surface morphology of AFs before and after modification were characterized by FTIR, XPS and FE-SEM. The results confirmed that l-PDOPA and KH550 were successfully introduced into the surface of AFs by electrostatic adsorption. The interfacial properties of AFs reinforced epoxy resin composites before and after coating were characterized by interfacial shear strength (IFSS), interlaminar shear strength (ILSS) and FE-SEM, and the results show that the interfacial adhesion properties of the modified fiber/epoxy resin composites were greatly improved.

The Influence of Recycled Poly(ethylene Terephthalate) Powder on Fatigue Life, Thermal Stability, and Morphology of Halloysite Nanotubes (HNTs) and Precipitated Silica Filled Natural Rubber Composites

2011 ◽  
Vol 471-472 ◽  
pp. 628-633 ◽  
Author(s):  
H. Nabil ◽  
Hanafi Ismail ◽  
A.R. Azura
Keyword(s):  
Fatigue Life ◽  
Natural Rubber ◽  
Interfacial Adhesion ◽  
Halloysite Nanotubes ◽  
Volatile Matter ◽  
Rubber Matrix ◽  
Rubber Composites ◽  
Hybrid Filler ◽  
Degradation Temperature ◽  
Natural Rubber Composites

In this paper, the influence of recycled polyethylene terephthalate powder (R-PET) on fatigue life, thermal properties and micro-fracture surfaces of halloysite nanotubes (HNTs) and silica filled natural rubber composites have been studied. The total amount of hybrid filler in each formulation was kept constant at 20 parts per hundred rubber (phr). The final properties of HNTs/R-PET and Silica/R-PET compounds are considered separately and comparatively. Results indicated that the fatigue life of the natural rubber composites decreased with the replacement of these two fillers by R-PET powder. This observation might be due to the R-PET itself, which reduces the interfacial adhesion and wettability between rubber matrix and fillers. By replacing of HNTs and silica with R-PET powder, the thermal degradation of natural rubber composites was shifted to a lower temperature and the char residues was decreased, in which HNTs/R-PET composites expressed the higher temperature and char residues than silica/R-PET composites. This findings may be due to the HNTs/R-PET has less volatile matter than silica/R-PET that might enhance the degradation temperature of the natural rubber composites. SEM micrographs also exhibited weak interfacial adhesion when these two fillers were replaced with R-PET powder in NR composites.

Sign in / Sign up

Export Citation Format

Share Document