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

Yang, Xuan; Tu, Qunzhang; Shen, Xinmin; Jiang, Chengming; Pan, Ming; Zhu, Pengxiao; Li, Yang; Hu, Caibing; Zhang, Qiong

doi:10.1016/j.polymertesting.2019.106259

Cited by 32 publications

(26 citation statements)

References 42 publications

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“…Thanks to the presence of the Si-H bond, it is possible to attach all kinds of substituents, e.g. amino [1][2][3][4], epoxycarbo [5][6][7], aryl and methacrylic [8,9] or polyether [4,10,11] groups. Modification of polysiloxanes with organic groups provides a wide range of hybrid materials combining the properties of polysiloxanes (thermal resistance, oxidation resistance, gas permeability, low surface tension, excellent dielectric properties, physiological neutrality and moisture resistance) with those of organic functional groups.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of Trisiloxane Surfactant Adsorption and Aggregation Processes

Karasiewicz

Krawczyk

2020

Molecules

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The trisiloxane polyether surfactant (3-[3-(hydroxy)(polyethoxy)propyl]-1,1,1,3,5,5,5 -heptamethyltrisiloxane) (TS-EO12) was successfully synthesized by a hydrosilylation reaction in the presence of Karstedt catalyst. The structural analysis of the surfactant was done by 1H-NMR, 13C-NMR, 29Si-NMR and FT-IR analysis. In addition the thermal stability of TS-EO12 was studied by the thermogravimetric measurements. On the one hand the surface properties of TS-EO12 at the water-air interface were investigated by surfactant aqueous solutions surface tension measurements carried out at 293 K, 303 K and 313 K, and on the other the aggregation properties were analyzed based on the solubilization properties of TS-EO12 aggregates at different temperatures. On the basis of the obtained thermodynamic parameters of adsorption and micellization of studied surfactant the temperature impact on its surface and volume properties were deduced. It was proved that the tendency of the studied surfactant molecules to adsorb at the water-air interface and to form micelles weakens with decreasing temperature. It was also concluded that the structure of the adsorption layer changes with temperature. Optical microscopy measurements were used for the TS-EO12 micelle morphology determination.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of Trisiloxane Surfactant Adsorption and Aggregation Processes

Karasiewicz

Krawczyk

2020

Molecules

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Section: Introductionmentioning

confidence: 99%

“…19 Among those methods, dopamine treatment is a versatile surface modification approach with significant advantages such as simple ingredients, mild reaction conditions, and applicability to various materials regardless of types or sizes. [20][21][22][23][24][25] During a simple deposition process, the oxidative selfpolymerization of dopamine occurs on the substrates to form thin layers, which act as a secondary reaction platform for further increase of surface activity or functionality. For instance, PDA and KH-560 26 were introduced on the surface of PBO fibers and the interlaminar shear strength of PBO/dicyanate ester wave-transparent laminated composites increased by 39.8%.…”

Section: Introductionmentioning

confidence: 99%

Understanding the self-polymerization mechanism of dopamine by molecular simulation and applying dopamine surface modification to improve the interfacial adhesion of polyimide fibers with epoxy resin matrix

Zhang³

et al. 2021

High Performance Polymers

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The object of this paper is to interpret the self-polymerization mechanism of dopamine by molecular simulation and use dopamine polymerization to modify the surface properties of polyimide fibers for improving its interfacial adhesion strength with the epoxy resin matrix. Theoretically, the molecular simulation results of calculated energy band gaps and infrared spectrum of the intermediate products generated in the dopamine self-polymerization process confirmed that the spontaneity of self-polymerization of dopamine and the occurrence of intramolecular cyclization and intermolecular polymerization in the self-polymerization process of dopamine. Moreover, the interaction between polyimide and poly(dopamine) was simulated, and the calculated results showed that the interaction between them depended on hydrogen bonding and was verified by ultrasound treatment. Experimentally, the effect of dopamine treatment concentration on the surface properties of polyimide fibers was investigated. Obviously, after a relatively high dopamine concentration treatment, the surface roughness and surface energy of polyimide fibers were largely improved and the number of active groups on polyimide fibers surface were increased, which were altogether conducive to enhance the adhesion strength of polyimide fibers with the epoxy resin matrix.

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“…The rubber-fiber composite has become the most preferred type of skeleton in the rubber industry. This is due to its excellent mechanical properties, as can be seen in common rubber products such as tires, air springs, and transport belts [ 1 , 2 , 3 , 4 ]. Researchers can design different rubber-fiber composite products according to their wishes, but the actual performance of these composites can be far from desired.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Constitutive Modeling of the Uncured Rubber Compound Based on the DMA Strain Scanning Method

Sun

Zhang

et al. 2020

Polymers

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Existing research tends to focus on the performance of cured rubber. This is due to a lack of suitable testing methods for the mechanical properties of uncured rubber, in particular, tensile properties. Without crosslinking by sulfur, the tensile strength of uncured rubber compounds is too low to be accurately tested by general tensile testing machines. Firstly, a new tensile stress testing method for uncured rubber was established by using dynamic thermomechanical analysis (DMA) tensile strain scanning. The strain amplitude was increased under a set frequency and constant temperature. The corresponding dynamic force needed to maintain the amplitude was then measured to obtain the dynamic force-amplitude curve observed at this temperature and frequency. Secondly, the Burgers model is usually difficult to calculate and analyze in differential form, so it was reduced to its arithmetic form under creep conditions and material relaxation. Tensile deformation at a constant strain rate was proposed, so the Burgers model could be modified to a more concise form without any strain terms, making mathematical processing and simulating much more convenient. Thirdly, the rate of the modified Burgers model under constant strain was in good agreement with the test data, demonstrating that the elastic stiffness was 1–2 orders of magnitude less than the tensile viscosity. In the end, it was concluded that large data dispersion caused by the universal tensile test can be overcome by choosing this model, and it may become an effective way to study the tensile modeling of uncured rubber compound.

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

Cited by 32 publications

References 42 publications

Thermodynamic Analysis of Trisiloxane Surfactant Adsorption and Aggregation Processes

Thermodynamic Analysis of Trisiloxane Surfactant Adsorption and Aggregation Processes

Understanding the self-polymerization mechanism of dopamine by molecular simulation and applying dopamine surface modification to improve the interfacial adhesion of polyimide fibers with epoxy resin matrix

Experimental Investigation and Constitutive Modeling of the Uncured Rubber Compound Based on the DMA Strain Scanning Method

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