Nonsolvent-assisted surface modification of silica by silane and antioxidant for rubber reinforcement

Zhong, Bangchao; Zeng, Xueqi; Chen, Wanjuan; Luo, Qiwen; Hu, Dechao; Jia, Zhixin; Jia, Demin

doi:10.1016/j.polymertesting.2019.105949

Cited by 27 publications

(15 citation statements)

References 37 publications

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“…First, SBR-1502 (100 phr) was masticated using an open two-roll mill (ZG-200L, Dongguan Zhenggong Mechanical and Electrical Equipment Technology Co., Ltd, Dongguan City, China) for 2 min. Then, zinc oxide (5 phr), stearic acid (2 phr), P-Silica/FS-SiO 2 (30 phr), antioxidant 2246 (2 phr), accelerator CZ (1.5 phr), accelerator DM (0.5 phr), and sulfur (1.6 phr) were added sequentially to the masticated SBR over 30 min until a homogeneous mixture was formed [ 29 ]. Subsequently, the SBR compounds were stored at room temperature for 16 h before the optimal cure time (Tc 90 ) was reached at 160 °C.…”

Section: Methodsmentioning

confidence: 99%

Mesoporous Spherical Silica Filler Prepared from Coal Gasification Fine Slag for Styrene Butadiene Rubber Reinforcement and Promoting Vulcanization

Zuo

et al. 2022

Polymers

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Coal gasification fine slag (CFS) is a solid contaminant produced by an entrained flow gasifier, which pollutes fields and the air in the long term. CFS is a potential polymer reinforcement filler and has been used in polypropylene and acrylonitrile butadiene styrene resins. Coal gasification fine slag mesoporous silica (FS-SiO2) was prepared by acid leaching, calcination, and pH adjustment, with a larger specific surface area and less surface hydroxyl compared to the commercial precipitated silica (P-silica). The cure characteristics, crosslink density, mechanical properties, the morphology of the tensile fractures, dynamic mechanics, and rubber processing of the prepared styrene butadiene rubber (SBR) composites filled with P-silica and FS-SiO2 were analyzed, respectively. The results indicated that FS-SiO2 was dispersed more uniformly in the SBR matrix than P-silica owing to its smaller amount of surface hydroxyl and spherical structure, resulting in a better mechanical performance and wet skid resistance. In particular, the SBR composites with a filler pH of 6.3 exhibited the highest crosslink density and tensile strength, being superior to commercial P-silica. Significantly, the curing time decreased with the increase in the pH of FS-SiO2, which caused the rubber processing to be more efficient. This strategy can reduce the cost of rubber composites and the environmental pollution caused by CFS.

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Section: Methodsmentioning

confidence: 99%

Mesoporous Spherical Silica Filler Prepared from Coal Gasification Fine Slag for Styrene Butadiene Rubber Reinforcement and Promoting Vulcanization

Zuo

et al. 2022

Polymers

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“…Since then, silica has played a more crucial role in the tire industry, because of the popular price and reduction in the rolling resistance of tires. 10,11 However, the structure of silica restricts its development. 12,13 Due to the existence of a large number of hydroxyl groups, there is a strong interaction of the silica filler, 14 leading to easy agglomeration of silica in the rubber matrix.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of natural rubber latex treatment for silica filled natural rubber composites

Wang

Luo

et al. 2023

J of Applied Polymer Sci

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Natural rubber latex filled with silica can be used to prepare low-cost green tires with low rolling resistance. However, low mixing efficiency and reduction of properties have become the major difficulty in the industry, because there are many polar groups on the surface of silica, and it is difficult to produce a strong interaction with a nonpolar rubber. In this paper, natural rubber latex masterbatch with silica was prepared, and easily mixed with natural rubber (NR) to obtain NR/silica composites. The silica after NRL treated in the rubber matrix characterized with well dispersion, good compatibility with rubber, and composites had weaker Payne effect and higher wet-skid resistance. Meanwhile, the 100% and 300% tensile modulus increased by 8.5% and 14.47%, respectively, notably decreasing heat build-up by 41.88%, compared to the composite prepared by dry mixing technology. Overall, both the dispersion and interfacial adhesion of silica in the rubber matrix have a significant synergistic effect on the properties of rubber composites. The strategy of preparing NR/silica composites provides new research avenues for the preparation of green tires and other rubber industries in the future.

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“…14,15 New antioxidants and antioxidant modified nanofillers were used to successfully improve the thermal oxidative aging resistance of NR. [16][17][18][19] Zhang et al prepared a functionalized graphene (FGE) with hindered phenol groups as an antioxidant for NR, endowing NR with excellent thermal oxidative aging resistance and high retention rate of tensile strength after aging. 20 Zheng et al prepared mixed antioxidants composed of an antioxidant and rare earth lanthanum complex, which could improve the thermal oxidative stability of NR and reduce the generation of oxidation products.…”

Section: Introductionmentioning

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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Nonsolvent-assisted surface modification of silica by silane and antioxidant for rubber reinforcement

Cited by 27 publications

References 37 publications

Mesoporous Spherical Silica Filler Prepared from Coal Gasification Fine Slag for Styrene Butadiene Rubber Reinforcement and Promoting Vulcanization

Mesoporous Spherical Silica Filler Prepared from Coal Gasification Fine Slag for Styrene Butadiene Rubber Reinforcement and Promoting Vulcanization

Preparation and performance of natural rubber latex treatment for silica filled natural rubber composites

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

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