Using Epoxidized Solution Polymerized Styrene-Butadiene Rubbers (ESSBRs) as Coupling Agents to Modify Silica without Volatile Organic Compounds

Liu, Chaohao; Guo, Mingming; Zhai, Xiaobo; Ye, Xin; Zhang, Liqun

doi:10.3390/polym12061257

Cited by 18 publications

(20 citation statements)

References 49 publications

(54 reference statements)

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“…The results show the decrease of G’ with increasing strain for all oil types, representing the destruction of silica network with increasing strain [ 27 , 35 ]. Generally, the difference in G´ values at low and high strains (ΔG’) is used to indicate the degree of filler–filler interaction [ 33 , 36 , 37 ]. Apparently, due to the poorer silica dispersion, the NTO-containing compound has higher ΔG’ indicating a greater magnitude of filler–filler interaction.…”

Section: Resultsmentioning

confidence: 99%

New Vegetable Oils with Different Fatty Acids on Natural Rubber Composite Properties

et al. 2021

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Owing to the toxicity of polycyclic aromatic (PCA) oils, much attention has been paid to the replacement of PCA oils by other nontoxic oils. This paper reports comparative study of the effects of new vegetable oils, i.e., Moringa oil (MO) and Niger oil (NO), on rheological, physical and dynamic properties of silica–filled natural rubber composite (NRC), in comparison with petroleum–based naphthenic oil (NTO). The results reveal that MO and NO exhibit higher thermal stability and better processability than NTO. Cure characteristics of the rubber compounds are not significantly affected by the oil type. It is also found that the NRCs containing MO or NO have better tensile strength and lower dynamic energy loss than the NRCs containing NTO. This may be because both MO and NO improve filler dispersion to a greater extent than NTO as supported by storage modulus and scanning electron microscopy results. Consequently, the present study suggests that MO and NO could be used as the alternative non–toxic oils for NRC without any loss of the properties evaluated.

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Section: Resultsmentioning

confidence: 99%

New Vegetable Oils with Different Fatty Acids on Natural Rubber Composite Properties

et al. 2021

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“…As a result, the surface of the nano-silica changed from hydrophilic to hydrophobic. 32 In addition, the coupling agent on the surface of the nano-silica blocked the agglomeration of particles, improving the dispersibility of the material, as shown in Figure 4 . Moreover, asymmetric stretching vibration absorption peaks of the −OH bond appeared at 3421 and 3600 cm –1 in the spectrum of the washed MNS.…”

Section: Resultsmentioning

confidence: 99%

Characterization and Performance Testing of an Intumescent Nanoinhibitor for Inhibiting Coal Spontaneous Combustion

et al. 2022

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Considering disadvantages such as the low thermal stability and environmental pollution of existing gel inhibitors, a green and stable intumescent nanoinhibitor (INI) was prepared and tested. First, polyacrylamide (PAM), nano-silica, and intumescent flame retardant (IFR) were selected as raw materials. The INI was prepared by nanoparticle modification and cross-linking polymerization. Then, the structure and physical properties of INI were tested by Fourier transform infrared spectroscopy, scanning electron microscopy, and rheological experiments. Meanwhile, the inhibition performance of INI was studied through thermogravimetric analysis-Fourier transfer infrared spectroscopy (TGA-FTIR) analysis. The results suggest that the nanomodification improved the dispersibility of INI particles. The addition of modified nano-silica (MNS) and IFR enhances the strength of the reticular structure, thereby improving the transport convenience and covering ability of the INI gel. At high temperatures, IFR can generate a porous foamed carbon layer that further coats the coal. After INI inhibition treatment, the characteristic temperature and activation energy of coal were significantly improved, and the production of carbon monoxide and carbon dioxide decreased. Hence, irrespective of physical properties, physical inhibition performance, or chemical inhibition performance, INI performed well. Research results can provide valuable references for the preparation and performance study of a coal spontaneous combustion inhibitor.

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“…The maximum torque (MH) values of the composites with PEG are quite higher than that of the PEG 0 composite without PEG, owing to the increase of the polymer–filler interaction. The delta torque values (MH–ML) give an indication for the overall crosslink density [ 34 , 35 ], including the polymer–polymer, the polymer–silane–silica and the filler–filler interactions. The difference between MH and ML for the PEG composites are larger than PEG 0 composite, indicating that the interactions increase in the presence of interfacial modifier PEG in the composites.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Effect by Polyethylene Glycol as Interfacial Modifier in Silane-Modified Silica-Reinforced Composites

Han

Tin

et al. 2021

Polymers

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The viscoelastic behavior and reinforcement mechanism of polyethylene glycol (PEG) as an interfacial modifier in green tire tread composites were investigated in this study. The results show a clear positive effect on overall performance, and it significantly improved all the parameters of the “magic triangle” properties, the abrasion resistance, wet grip and ice traction, as well as the tire rolling resistance, simultaneously. For the preparation of the compounds, two mixing steps were used, as PEG 4000 was added on the second stage in order to avoid the competing reaction between silica/PEG and silanization. Fourier transform infrared spectroscopy (FTIR) confirmed that PEG could cover the silanol groups on the silica surface, resulting in the shortening of cure times and facilitating an increase of productivity. At low content of PEG, the strength was enhanced by the improvement of silica dispersion and the slippage of PEG chains, which are chemically and physically adsorbed on silica surface, but the use of excess PEG uncombined with silica in the compound, i.e., 5 phr, increases the possibility to shield the disulfide bonds of bis(3-(triethoxysilyl)-propyl) tetrasulfide (TESPT), and, thus, the properties were deteriorated. A constrained polymer model was proposed to explain the constrained chains of PEG in the silica-loaded composites on the basis of these results. An optimum PEG content is necessary for moderately strong matrix–filler interaction and, hence, for the enhancement in the mechanical properties.

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Using Epoxidized Solution Polymerized Styrene-Butadiene Rubbers (ESSBRs) as Coupling Agents to Modify Silica without Volatile Organic Compounds

Cited by 18 publications

References 49 publications

New Vegetable Oils with Different Fatty Acids on Natural Rubber Composite Properties

New Vegetable Oils with Different Fatty Acids on Natural Rubber Composite Properties

Characterization and Performance Testing of an Intumescent Nanoinhibitor for Inhibiting Coal Spontaneous Combustion

Synergistic Effect by Polyethylene Glycol as Interfacial Modifier in Silane-Modified Silica-Reinforced Composites

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