Research on the Influence of Extremely Cold Environment on the Performance of Silicone Rubber and Fluorinated Silicone Rubber

Wang, Shenghui; Hou, Mengchao; Ma, Kang; Li, Zhiwei; Geng, Hui; Zhang, Wenwen; Li, Nan

doi:10.3390/polym14091898

Cited by 13 publications

(4 citation statements)

References 25 publications

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“…The experiments showed that the particle size and added amount of ATH had little effect on the electrical properties of the sheds, but the mechanical properties were affected [ 14 , 15 , 16 ]. Wang et al [ 17 ] studied the properties of silicone rubber and fluorosilicone rubber under freezing conditions. In terms of the mechanical properties of silicone rubber, the maximum tensile force and tensile strength of the silicone rubber increased with increasing freezing time.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of High Temperature Vulcanized Silicone Rubber Aged in the Natural Environment

Zhang

Zhao²,

Wan³

et al. 2022

Polymers

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Composite insulators operate in harsh field environments all year round. Their various properties and states of aging require attention. It is important to study the performance changes of composite insulator sheds after aging to evaluate the life of insulators operating on grids. For this reason, 22 composite insulator sheds from different factories, with different voltage levels and different ages years were selected to conduct mechanical properties testing. The mechanical properties include hardness, tensile strength, and elongation at break, and were investigated by thermogravimetric (TGA) testing, surface morphology, and nuclear magnetic resonance (NMR) characterization. The changes in mechanical properties of high temperature vulcanization (HTV) composite insulator silicone rubber aged in the natural environment were analyzed, including the reasons for these changes. The results showed that the transverse relaxation time T2 of the sample was closely related to its aging state. The more serious the silicone rubber’s aging, the smaller was the T2. The state of the composite insulator can be evaluated by using T2 and aging years simultaneously. With the actual degree of aging in the silicone rubber intensified, its tensile strength and elongation at break generally showed a downward trend.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties of High Temperature Vulcanized Silicone Rubber Aged in the Natural Environment

Zhang

Zhao²,

Wan³

et al. 2022

Polymers

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“…On one hand, it can improve the low-temperature and processing performance of fluororubber, and on the other hand, it can improve the medium durability of silicone rubber. This replaces the expensive fluorosilicone rubber, which not only effectively reduces the cost but also realizes the improvement of economic value . Previous studies have shown that fluoroelastomers and silicone rubbers are thermodynamically incompatible systems, but they are technically compatible.…”

Section: Introductionmentioning

confidence: 99%

“…This replaces the expensive fluorosilicone rubber, which not only effectively reduces the cost but also realizes the improvement of economic value. 24 Previous studies have shown that fluoroelastomers and silicone rubbers are thermodynamically incompatible systems, but they are technically compatible. Even if there is great difficulty in working together, they can reduce phase separation through high-strength physical interactions.…”

Section: Introductionmentioning

confidence: 99%

Preparation of High-Strength and Excellent Compatibility Fluorine/Silicone Rubber Composites under the Synergistic Effect of Fillers

et al. 2023

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Fluorine/silicone composite rubber is widely used as a sealing material in aerospace, missile, automotive, petroleum, and other industries, but the traditional process does not use synergistic fillers to strengthen the composite system. In this research, fumed SiO2 and black caron (N990) were used as synergistic fillers, fluorine/silicone composite rubber was prepared by mechanical mixing process, and three different fluorine rubber systems were used to find the best composite material. The mechanical properties, thermal properties, aging properties, moderate strength properties, and microstructure of the composites were evaluated. Studies have shown that mixing the two can produce a certain interface interaction and effectively improve the compatibility. The physical properties of the material tended to decrease during the increase in the added amount of silicone rubber (MVQ). The maximum tensile strength of the hybrid material can reach 15 MPa. The optimal mixing ratio is fluororubber/silicone rubber (FKM/MVQ) = 9/1. At this time, the mechanical properties of the composite material are in the best state, and SiO2 and black caron (N990) have a reinforcing effect, which can effectively improve the mechanical properties. After the composite was kept at 200 °C for 48 h, the tensile strength and elongation of the best sample A1 were 99.5 and 97.0%, respectively, showing excellent anti-aging properties. This work provides a method to fabricate high-strength fluorine/silicone composites using synergistic fillers that may be used in heat-medium-sealed environments.

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“…However, most materials used in soft robotics are not suitable for space because of their thermal limitations, making the study of elastomers an ongoing and active field. Silicones, as an example, can resist crystallization even at -120°C [14], and their behavior at elevated temperatures is well-understood [15]. The performance of TPU in frigid conditions is under investigation [16], with its operational range believed to be between -90°C and 130°C [17].…”

Section: Introductionmentioning

confidence: 99%

Aeroelastics-aware compensation system for soft aerial vehicle stabilization

2022

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This paper describes a compensation system for soft aerial vehicle stabilization. Balancing the arms is one of the main challenges of soft UAVs since the propeller is freely tilting together with the flexible arm. In comparison with previous designs, in which the autopilot was adjusted to deal with these imbalances with no extra actuation, this work introduces a soft tendon-actuated system to achieve in-flight stabilization in an energy-efficient way. The controller is specifically designed for disturbance rejection of aeroelastic perturbations using the Ziegler-Nichols method, depending on the flight mode and material properties. This aerodynamics-aware compensation system allows to further bridge the gap between soft and aerial robotics, leading to an increase in the flexibility of the UAV, and the ability to deal with changes in material properties, increasing the useful life of the drone. In energetic terms, the novel system is 15–30% more efficient, and is the basis for future applications such as object grasping.

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Research on the Influence of Extremely Cold Environment on the Performance of Silicone Rubber and Fluorinated Silicone Rubber

Cited by 13 publications

References 25 publications

Mechanical Properties of High Temperature Vulcanized Silicone Rubber Aged in the Natural Environment

Mechanical Properties of High Temperature Vulcanized Silicone Rubber Aged in the Natural Environment

Preparation of High-Strength and Excellent Compatibility Fluorine/Silicone Rubber Composites under the Synergistic Effect of Fillers

Aeroelastics-aware compensation system for soft aerial vehicle stabilization

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