Research progress on compounding agent and mechanical test method of fluororubber

Xu, Zehua; Zhang, Yanbin; Li, Anling; Wang, Jiwen; Wang, Guangfei; He, Qiang

doi:10.1002/app.50913

Cited by 34 publications

(15 citation statements)

References 77 publications

(52 reference statements)

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“…Furthermore, we explored the element composition of the sample after tests. As shown in Figure k,l, C and F are derived from the rubber molecular chain, carbon black (C), and the C 4 F 7 N gas mixture . The Zn, Mg, Ca, and Si originated from the reinforcing agents, such as zinc oxide (ZnO), magnesium oxide (MgO), calcium oxide (CaO), calcium sulfate (CaCO 3 ), and silica white (SiO 2 ). , The O element is derived from the reinforcing agent and peroxide cross-linker and its products, and S belongs to the vulcanizing agent introduced during the vulcanization process that forms sulfur–carbon cross-linking bonds in the rubber.…”

Section: Resultsmentioning

confidence: 99%

Compatibility and Interaction Mechanism between the C₄F₇N/CO₂/O₂ Gas Mixture and FKM and NBR

et al. 2023

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The C 4 F 7 N/CO 2 /O 2 gas mixture received a great deal of attention for its potential use in eco-friendly gas-insulated equipment (GIE). The evaluation of the compatibility between C 4 F 7 N/CO 2 /O 2 and sealing rubber is necessary and significant considering the high working pressure (0.14−0.6 MPa) of GIE. Herein, we explored the compatibility between C 4 F 7 N/CO 2 /O 2 and fluororubber (FKM) and nitrile butadiene rubber (NBR) for the first time by analyzing the gas components, rubber morphology, elemental composition, and mechanical properties. The interaction mechanism of the gas−rubber interface was further investigated based on the density functional theory. We found that C 4 F 7 N/CO 2 / O 2 is compatible with FKM and NBR at 85 °C, while the surface morphology changed at 100 °C, with white granular and agglomerated lumps appearing on FKM and multi-layer flakes being generated on NBR. The accumulation of the fluorine element occurred, and the compressive mechanical properties of NBR deteriorated after the gas−solid rubber interaction. Overall, the compatibility between FKM and C 4 F 7 N/CO 2 /O 2 is superior, which could be employed as the sealing material for C 4 F 7 N-based GIE.

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Section: Resultsmentioning

confidence: 99%

Compatibility and Interaction Mechanism between the C₄F₇N/CO₂/O₂ Gas Mixture and FKM and NBR

et al. 2023

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“…Due to the high C–F bond energy and the small atomic radius, there exists the strongest electronegativity of the fluorine atom and the strong electron-withdrawing effect. Fluorine rubber effectively shields and protects the C–C bond in the main chain, giving the fluorine rubber excellent high-temperature resistance, aging and stability, and so forth. , Therefore, it can be widely used as a sealing material in modern missiles, rockets, automobiles, petroleum industry, aviation, aerospace, and other fields. However, fluororubber is difficult in processing, has a high cost, and has a low-temperature performance, which limits its application in the above-mentioned fields.…”

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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“…Inspired by heat-resistant O-rings made from fluororubber (FKM), , in this work, FKM was employed as a dry adhesive to overcome the above-mentioned challenge. We first demonstrated the superior thermostability and contamination-free high adhesion at low contacting preload of the FKM film.…”

Section: Introductionmentioning

confidence: 99%

Micropatterned Fluororubber-Based Dry Adhesive for Pan-Semiconductor Production Line with Complicated Operating Conditions

Li,

Tian,

Fan

et al. 2023

Langmuir

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The efficient and safe manipulation of precision materials (such as thin and fragile wafers and glass substrates for flat panel displays) under complicated operating conditions with vacuum, high temperature, and low preload stress is an essential task for pan-semiconductor production lines. However, current manipulation approaches such as suction-based gripping (invalid under vacuum conditions) and mechanical clamping (stress concentration at the contact interfaces) are challenged to satisfy such complex requirements. Herein, fluororubber (FKM) is employed as an adhesive material to overcome such challenges due to its outstanding thermostability, availability under vacuum environments, and high adhesion at low contacting preloads. However, the adhesion of the FKM film decreases significantly with increasing temperature (decrease by 84.83% at 245 °C). Consequently, a micropatterned FKM-based dry adhesive (MFA) fabricated by laser etching is developed. The experimental results reveal that MFAs are efficient in restraining adhesion attenuation at high temperatures (minimum 15% decrease at 245 °C). The numerical analysis and in situ observations reveal the mechanism of the MFAs in restraining adhesion attenuation. The contamination-free and high adhesion at low contacting preload of MFAs can be of great interest in pan-semiconductor production lines that require complicated operating conditions on temperature, vacuum, and interface stress.

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Research progress on compounding agent and mechanical test method of fluororubber

Cited by 34 publications

References 77 publications

Compatibility and Interaction Mechanism between the C₄F₇N/CO₂/O₂ Gas Mixture and FKM and NBR

Compatibility and Interaction Mechanism between the C₄F₇N/CO₂/O₂ Gas Mixture and FKM and NBR

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

Micropatterned Fluororubber-Based Dry Adhesive for Pan-Semiconductor Production Line with Complicated Operating Conditions

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Research progress on compounding agent and mechanical test method of fluororubber

Cited by 34 publications

References 77 publications

Compatibility and Interaction Mechanism between the C4F7N/CO2/O2 Gas Mixture and FKM and NBR

Compatibility and Interaction Mechanism between the C4F7N/CO2/O2 Gas Mixture and FKM and NBR

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

Micropatterned Fluororubber-Based Dry Adhesive for Pan-Semiconductor Production Line with Complicated Operating Conditions

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Product

Resources

About

Compatibility and Interaction Mechanism between the C₄F₇N/CO₂/O₂ Gas Mixture and FKM and NBR

Compatibility and Interaction Mechanism between the C₄F₇N/CO₂/O₂ Gas Mixture and FKM and NBR