In the field of high-end elastomer materials, fluorosilicone raw rubber has emerged as a critical link between chemical innovation and industrial demands, leveraging its unique molecular structure and integrated performance capabilities. The MY 110-F Series of fluorosilicone raw rubber  (breaks through the performance bottlenecks of traditional rubber materials in oil resistance, temperature resistance, and flexibility) through molecular-level design of siloxane backbones and fluoroalkyl groups, achieving a leap from "usable" to "excellent" in demanding scenarios such as aerospace and semiconductor manufacturing. This article analyzes its technological core from a molecular engineering perspective and explores its empowerment pathways in strategic emerging industries.

I. Molecular Engineering: The Mechanism of Performance Breakthrough via Fluorosilicone Synergy

The superior performance of fluorosilicone raw rubber stems from its precisely regulated molecular structure network. The silicon-oxygen bond (Si-O) in the main chain has a bond energy of 452 kJ/mol, 30% higher than that of carbon-carbon bonds (C-C), enabling chain segment mobility even at 200°C. The introduction of trifluoropropyl side groups enhances performance through the following mechanisms:

(1) Molecular-Level Optimization of Oil Resistance

The electron cloud barrier formed by fluorine atoms in trifluoropropyl groups (-CF₂CF₂CF₃) significantly reduces the swelling effect of oil molecules. Experimental data shows that after immersion in aviation kerosene at 150°C for 168 hours, the volume change rate of the MY 110-F Series is <5%, while that of traditional methyl silicone rubber exceeds 20%. The high electronegativity of fluorine gives the C-F bond an energy of 485 kJ/mol, effectively resisting free radical attacks in fuel—a critical property for aerospace engine seals.

(2) Conformational Regulation of Low-Temperature Flexibility

The helical conformation of the siloxane backbone inherently provides good low-temperature performance, which the trifluoropropyl groups further enhance through a "molecular lubrication" effect. At -60°C, the Shore hardness increase of fluorosilicone vulcanizates is <15 Shore A, compared to >40 Shore A for nitrile rubber. This difference makes fluorosilicone irreplaceable in sealing equipment for polar scientific expeditions.

(3) Interface Optimization of Dielectric Properties

The uniform distribution of vinyl end groups ensures the regularity of the vulcanization network, resulting in a volume resistivity of 1×10¹⁵ Ω·cm and a stable dielectric constant (1 MHz) of 2.8±0.2. These properties enable excellent performance in high-frequency insulation components for 5G communication devices, reducing dielectric loss by 40% compared to traditional rubbers.

II. Process Innovation: Key Breakthroughs from Laboratory to Industrialization

The industrial application of the MY 110-F Series is enabled by three core process innovations that address critical challenges in fluorosilicone raw rubber processing:

(1) Gradient Control Technology for Molecular Weight Distribution

Optimization of the coordination polymerization process reduces the molecular weight distribution index (PDI) from 2.5–3.0 (traditional processes) to 1.8–2.2, decreasing melt fracture during extrusion by 70%. An aerospace seal manufacturer reduced product scrap rates from 12% to <3% and significantly improved production efficiency after adopting this technology.

(2) Low-Volatile Control Process

Molecular distillation purification technology reduces residual monomer content to <50 ppm and volatile matter (150°C×24h) to <0.8%. These meet the stringent SEMI standards in semiconductor manufacturing), preventing contamination of wafer processes by volatiles in lithography machine chamber seals and ensuring the stability of nanoscale processes.

(3) Precise Regulation of Vinyl Content

A continuous grafting process enables vinyl content control with an accuracy of ±0.05%, offering a gradient selection from 0.1%–1.0%. A new energy battery enterprise achieved 10-second rapid curing using a grade with 1.0% vinyl content via addition vulcanization, meeting the mass production requirements for power battery seals and tripling production throughput.

III. Scenario Empowerment: The Material Foundation for Strategic Emerging Industries

(1) Solutions for Extreme Environments in Aerospace

In the fuel system of the C919 airliner, seals made from the MY 110-F Series passed 1,000-hour aging tests at 180°C and maintained stable sealing performance through temperature cycles from -40°C to 120°C. Compared to traditional fluororubber seals, they reduce low-temperature leakage by 60% and weight by 25%, contributing to aircraft weight reduction and fuel efficiency.

(2) Meeting High-Purity Demands in Semiconductor Manufacturing

In an etching chamber seal for a 12-inch wafer fab, fluorosilicone raw rubber products extended the chamber cleaning cycle from 48 to 168 hours, minimizing production losses) due to cleaning. The material’s low ion precipitation (<1 ppm for both Na⁺ and Cl⁻) meets the cleanliness requirements of advanced processes, performing excellently in 7nm etching steps.

(3) Protecting Three-Electric Systems in New Energy Vehicles

In BYD’s Blade Battery sealing solution, fluorosilicone raw rubber products offer multi-dimensional advantages: <3% volume change in electrolyte (carbonates), maintaining elasticity through 150°C thermal cycles, and a breakdown strength of 10 kV/mm. Test data from a battery enterprise shows that battery packs using this material exhibited no leakage during nail penetration tests, significantly improving safety.

IV. Industry Trends: The Future Competitive Landscape of High-Performance Elastomers

(1) Technological Evolution Directions

Ultra-High Temperature Resistance Modification: Development of modified grades capable of withstanding 250°C long-term use through phenyl group introduction, targeting mass production by 2025 for aerospace engine combustion chamber seals.

Self-Healing Function Integration: Introduction of dynamic covalent bonds into the molecular network, with preliminary experiments showing 80% mechanical property recovery within 24 hours after scratching.

Nanocomposite Technology: Enhancement of thermal conductivity to 0.8 W/m·K through graphene nanoplatelet addition, meeting dual requirements for heat dissipation and sealing in 5G base stations.

(2) Market Demand Forecast

According to Grand View Research, the global fluorosilicone market will grow from $1.2 billion in 2023 to $2.1 billion by 2030, with a CAGR of 8.3%. Demand from semiconductor and new energy sectors will grow fastest, exceeding 15% annually from 2025–2030, driving rapid development toward higher purity and functionalization.

(3) Environmental Sustainability

Development of biodegradable fluorosilicone raw rubber through hydrolyzable ester bonds, achieving >70% degradation in specific environments. This innovation  (addresses the EU’s New Plastics Economy Strategy) and provides solutions for environmentally friendly e-waste processing.

From  (microscopic innovations) in molecular design to  (macroscopic transformations) in industrial applications, fluorosilicone raw rubber is driving industrial  (upgrades) through material innovation. The MY 110-F Series represents high-performance elastomers that are not only "answers" to existing engineering challenges but also "keys" to unlocking future technological possibilities. As industries increasingly demand materials for extreme environments, these advanced materials combining silicone and fluorine advantages will play strategic roles in addressing critical technological bottlenecks.


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