Enhancing fatigue properties of styrene butadiene rubber composites by improving interface adhesion between coated aramid fibers and matrix

Zhong, Jincheng; Luo, Zhu; Zhi, Hao; Guo, Yuanlong; Zhou, Zongtao; Li, Peng; Bai, Xue

doi:10.1016/j.compositesb.2019.05.091

Cited by 62 publications

(38 citation statements)

References 35 publications

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“…The strength of AF was not obviously altered at the treatment time no more than 2 hr. [ 20,27 ] Therefore, the treatment time of AF in the LiCl aqueous solution was selected as 2 hr in this study.…”

Section: Resultsmentioning

confidence: 99%

Construction of an in situ interfacial layer for aramid fiber reinforced styrene butadiene rubber composites

Luo

Yang

Xiang

et al. 2020

J of Applied Polymer Sci

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In this work, the in situ interface layer composite was prepared by using the coating agent dispersion. Aramid fiber (AF) was modified with lithium chloride aqueous solution, and then coated with the blends of a low‐molecular weight maleated polybutadiene liquid rubber (MLPB), the epoxy resin (E51), and 2‐ethyl‐4‐methylimidazole (2E4MZ). The in situ interface layer was formed via the reaction of epoxy group with anhydride group in the presence of the accelerator 2E4MZ and covulcanization of MLPB with styrene butadiene rubber (SBR) in the process of preparing vulcanized AF reinforced SBR. It can be seen from analysis of scanning electronic microscopy, attenuated total reflection Fourier transform infrared, and thermogravimetric analysis that the in situ interfacial layer was a uniform and dense interfacial layer on the fiber surface and was not be destroyed during processing. The results of the dynamic mechanical analysis and mechanical properties showed that the in situ interface layer formed in processing had higher flexibility and better integrity than the interface layer prepared before processing, which is favorable for stress relaxation, and the in situ interface layer imparts better tensile strength and tear strength to the composite. The 100% modulus of composites with in situ interface layers was 14.6% higher than that of composites prepared without uncoated AF.

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Section: Resultsmentioning

confidence: 99%

Construction of an in situ interfacial layer for aramid fiber reinforced styrene butadiene rubber composites

Luo

Yang

Xiang

et al. 2020

J of Applied Polymer Sci

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“…Finally the rheometer (M2000FAN, High Speed Rail Technology Co. Ltd., China) was used to determine cure time (tc90) at 150°C, and the gross rubber was cut into a mold‐sized template, placed in the mold, and formed it in a press vulcanizer (XLB, 25 t, Jiangdu Pearl Experiment Machine Factory, China) at 150°C for the standard Tc90. [ 17 ]…”

Section: Experimental Methodsmentioning

confidence: 99%

“…[16] Finally the rheometer (M2000FAN, High Speed Rail Technology Co. Ltd., China) was used to determine cure time (tc90) at 150 C, and the gross rubber was cut into a mold-sized template, placed in the mold, and formed it in a press vulcanizer (XLB, 25 t, Jiangdu Pearl Experiment Machine Factory, China) at 150 C for the standard Tc90. [17] 2.4 | Measurements and characterization 2.4.1 | Fourier infrared spectroscopy FTIR (NEXUS 670, Thermo Company, USA) was used to analyze the functional group changes on the surface of the unmodified and modified AF in the spectral range from 600-3600 cm −1 at room temperature. The fiber sample was carried out ATR-FTIR for spectra analysis.…”

Section: Preparation Of the Sbr/af Vulcanized Compositementioning

confidence: 99%

The reinforcement of styrene butadiene rubber composites with simple environmentally friendly aramid fiber modification

Liu

Luo

et al. 2020

Polymer Composites

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The surface treatment of aramid fiber (AF) improved the properties of reinforced composites. However, many AF modification methods were difficult to apply to the mass production of reinforced composites due to drawbacks, such as processes that were complex and not environmentally friendly. This paper described three simple and environmentally friendly methods for AF surface treatment and their effects on the properties of reinforced aramid fiber/carbon black/butadiene benzene ethylene rubber (AF/CB/SBR) composites. The AF was treated by thermal oxidation and coated with butadiene‐styrene‐pyridine rubber latex (VPL) or maleated polybutadiene liquid rubber. Then, AF/CB/SBR composites were produced when the modified AF was introduced into the SBR matrix. The results showed that compared with that of the composite with untreated AF, the interfacial bonding between the modified AF and the rubber matrix was improved, especially for tensile modulus elongations of 100% and 300%, and the tear strength of the composites was enhanced. Compared with those for the rubber composites with the AF treated by thermal oxidation, the mechanical properties of the rubber composites with the coated AF showed a greater improvement, but the heat generation was higher. Moreover, the thermal oxidation method not only improved the constant elongation stress and tear strength but also reduced the heat generation of the materials.

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“…This was because the addition of DBTH could increase the crosslink density of the composites, leading to the enhancement of the binding force of rubber chains, which increased the storage modulus. 33 After thermal oxidative aging at 100 C for 48 h, the change range of storage modulus of NR/CB/0.5D and F I G U R E 9 SEM images of the filler dispersion of NR/CB composites before (a-c) and after (d-f) thermal oxidative aging NR/CB-dS/0.5D was less than that of NR/CB, which meant better thermal oxidative stability of the NR/CB composites containing DBTH.…”

Section: Mechanical Properties Of Nr/cb Composites After Thermal Oxidative Agingmentioning

confidence: 99%

Improving thermal oxidative aging resistance and anti‐reversion property of natural rubber by adding a crosslinking agent

Jiang

Zhang

2021

J of Applied Polymer Sci

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The reversion during the curing and the poor thermal oxidative aging resistance of natural rubber are two main problems for its use as a tire tread. To solve the problems, a crosslinking agent, 1,6-bis(N,N 0 -dibenzyl thiocarbamoyl dithio)-hexane (DBTH), is added into natural rubber/carbon black composites.DBTH can increase the crosslink density, improve the mechanical properties and thermal oxidative aging resistance of the composites. The composites with DBTH can maintain good wet-skid resistance after thermal oxidative aging. When 0.2 phr DBTH is used to substitute 0.1 phr sulfur and 0.1 phr accelerator in a natural rubber/carbon black composite, the reversion during the curing is reduced and the DIN abrasion decreases by 6%, while the modulus and hardness of the composite keep close to the original. Besides, after thermal oxidative aging at 100 C for 48 h, the rate of change of stress at 300% strain of the composite decreases by 27% with the substitution of DBTH.

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Enhancing fatigue properties of styrene butadiene rubber composites by improving interface adhesion between coated aramid fibers and matrix

Cited by 62 publications

References 35 publications

Construction of an in situ interfacial layer for aramid fiber reinforced styrene butadiene rubber composites

Construction of an in situ interfacial layer for aramid fiber reinforced styrene butadiene rubber composites

The reinforcement of styrene butadiene rubber composites with simple environmentally friendly aramid fiber modification

Improving thermal oxidative aging resistance and anti‐reversion property of natural rubber by adding a crosslinking agent

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