1.Introduction
1.1FVMQ (Fluorosilicone Rubber) rubber is a special synthetic rubber material that combines the properties of fluorine rubber and silicone rubber. It has the excellent chemical resistance of fluorine rubber and the excellent high temperature performance of silicone rubber, so it is widely used in specific application fields.
2.Performance characteristics of FVMQ rubber
2.1 High temperature resistance
2.1.1 High temperature stability: FVMQ rubber has excellent high temperature stability and can maintain the elasticity and mechanical properties of the material under extreme temperature conditions. Its temperature resistance range is usually -60°C to +200°C, or even higher. In contrast, general silicone rubber will harden and lose elasticity at high temperatures, while FVMQ rubber can maintain stable performance at higher temperatures.
2.1.2 Resistance to thermal oxidative aging: It has good resistance to thermal oxidative aging. Thermo-oxidative aging refers to the phenomenon of oxidation and aging of rubber materials under the conditions of high temperature and the presence of oxygen. By adding special antioxidants and stabilizers, FVMQ rubber can effectively delay the occurrence of thermal oxidative aging and improve its service life in high temperature environments.
2.1.2 Low coefficient of thermal expansion: The coefficient of thermal expansion is relatively low, which means that its size changes less at high temperatures. This feature is very important for seals that need to maintain dimensional stability at high temperatures to avoid leakage or failure caused by thermal expansion.
2.1.3 Excellent thermal conductivity: FVMQ rubber has high thermal conductivity and can conduct heat from the sealed area to the surrounding environment faster. This helps lower the temperature of the seal in high-temperature environments, reduces the accumulation of thermal stress, and improves the stability and life of the seal.
2.1.4 Thermal shock tolerance: FVMQ rubber has a strong ability to withstand thermal shock (rapid changes in temperature). In some applications, seals may frequently experience drastic changes in temperature, such as engine components, high-temperature fluid transfer systems, etc . Able to adapt to this transient high temperature change, maintain sealing effect and prevent leakage.
2.2 Chemical resistance
2.2.1 Acid resistance: FVMQ rubber has good corrosion resistance to most acidic media. Whether it is a strong acid or a weak acid, FVMQ rubber can maintain stable performance under long-term contact without significant dissolution, swelling or hardening. This makes FVMQ Rubber is widely used in sealing applications in acidic environments, such as chemical processing equipment, acid storage tanks, etc.
2.2.2 Alkali resistance: It also shows good alkali resistance. In alkaline media, FVMQ rubber maintains its mechanical properties and chemical stability without significant dissolution or swelling. This makes FVMQ rubber widely used in alkaline environments, such as chemical pipelines, pharmaceutical equipment, etc.
2.2.3 Solvent resistance: It has excellent solvent resistance and can withstand the erosion of various organic solvents. For example, it can maintain its performance stably when exposed to petrochemical solvents such as petroleum, gasoline, diesel, and lubricants. This makes FVMQ rubber widely used in seal applications in the automotive industry, petrochemical industry and other fields.
2.2.4 Oil resistance: FVMQ rubber has good oil resistance to various lubricants and lubricants. It can maintain its elasticity and mechanical properties when in contact with lubricating media such as oil and grease, without significant dissolution, swelling or hardening. This makes FVMQ rubber widely used in lubrication system seals, engine parts and other fields.
2.3 Low temperature flexibility
2.3.1 Acid resistance: FVMQ rubber has good corrosion resistance to most acidic media. Whether it is a strong acid or a weak acid, it can maintain stable performance under long-term contact without obvious dissolution, swelling or hardening. It is also widely used in sealing applications in acidic environments, such as chemical processing equipment, acid storage tanks, etc.
2.3.2 Alkali resistance: FVMQ rubber also shows good alkali resistance. In alkaline media, FVMQ rubber maintains its mechanical properties and chemical stability without significant dissolution or swelling. This makes FVMQ rubber widely used in alkaline environments, such as chemical pipelines, pharmaceutical equipment , etc.
2.3.3 Solvent resistance: FVMQ rubber has excellent solvent resistance and can withstand the erosion of a variety of organic solvents. For example, it can maintain its performance stably when exposed to petrochemical solvents such as petroleum, gasoline, diesel, and lubricants. This makes it widely used in seal applications in the automotive industry, petrochemical industry and other fields.
2.3.4 Oil resistance: FVMQ rubber has good oil resistance to various lubricants and lubricants. It can maintain its elasticity and mechanical properties when in contact with lubricating media such as oil and grease, without significant dissolution, swelling or hardening. This makes FVMQ rubber widely used in lubrication system seals.
3.Application fields of FVMQ seals
3.1 Automobile industry
3.1.1 Engine seals: FVMQ seals can be used for sealing applications in automotive engine systems. Since FVMQ rubber has good high temperature resistance and oil resistance, it can be used for engine seals, such as valve cover gaskets, rocker chamber cover gaskets, cylinder head gaskets, etc. These seals need to work at high temperatures and in contact with lubricating media such as petroleum and lubricating oil, so they have high requirements for oil resistance and high temperature resistance.
3.1.2 Fuel system seals: Seals can also be used in seals in automobile fuel systems, such as fuel nozzle gaskets, fuel pump gaskets, etc. These seals need to be fuel and chemical resistant to ensure system tightness and reliability.
3.1.3 Exhaust system seals: FVMQ seals can be used for sealing applications in automobile exhaust systems, such as exhaust pipe gaskets, exhaust joint gaskets, etc. Seals in exhaust systems need to be resistant to high temperatures and gas erosion to maintain system sealing and emissions performance.
3.1.4 Braking system seals: Seals can also be used as seals in automobile braking systems, such as brake piston seals, brake master cylinder seals, etc. These seals need to be resistant to high temperatures, oils and brake fluids to ensure the reliability and safety of the braking system.
3.1.5 Suspension system seals: FVMQ seals can be used for sealing applications in automobile suspension systems, such as suspension ball head seals, shock absorber seals, etc. These seals need to be resistant to wear, oil, and high temperatures to keep the suspension system functioning properly and dampening.
3.2 Aerospace industry
3.2.1 Aero engine seals: FVMQ seals can be used for sealing applications in aero engine systems. The working environment of aerospace engines is extremely harsh and requires resistance to high temperatures, oils and chemicals. FVMQ seals can be used in valve cover gaskets, turbine seals, fuel nozzle gaskets, etc. to ensure engine reliability and performance.
3.2.2 Aerospace fuel system seals: Seals can also be used in seals in aerospace fuel systems, such as fuel pump gaskets, fuel valve seals, etc. These seals need to be resistant to fuel oil, liquid oxygen, and high temperatures to ensure fuel system reliability and safety.
3.2.3 Aviation hydraulic system seals: FVMQ seals can be used for sealing applications in aviation hydraulic systems, such as hydraulic cylinder seals, hydraulic pipe joint seals, etc. Hydraulic system seals need to be resistant to high pressure, high temperature and liquid erosion to ensure system sealing and performance.
3.2.4 Spacecraft seals: Seals can also be used in various parts of the spacecraft, such as spacecraft door seals, airtight cabin seals, thruster seals, etc. These seals need to be resistant to high temperature, low temperature, vacuum and radiation to ensure the safety and reliability of the spacecraft.
3.3 Medical device industry
3.3.1 Medical equipment seals: FVMQ seals can be used for sealing applications in various medical equipment, such as infusion devices, ventilators, blood analyzers, etc. These devices need to be resistant to chemicals, temperatures and disinfectants to ensure sealing and reliability.
3.3.2 Medical syringe and infusion set seals: FVMQ seals can be used for sealing applications in medical syringes and infusion sets. These seals need to be resistant to chemicals and high temperatures to ensure the sealing and safety of the liquid.
3.3.3 Medical gas transmission system seals: FVMQ seals can also be used as seals in medical gas transmission systems, such as oxygen mask seals, gas valve seals, etc. These seals need to be resistant to oxygen, chemicals and temperatures to ensure the reliability and safety of gas transfer systems.
3.3.4 Medical device sterilization seals: FVMQ seals can be used for sealing applications in the sterilization process of medical devices, such as high-temperature steam sterilizer seals, chemical sterilizer seals, etc. These seals need to be resistant to high temperatures, chemical disinfectants and pressure to ensure a tight and safe disinfection process.
3.4 Food and pharmaceutical industry
3.4.1 Food Processing Equipment Seals: Rubber may be used in sealing applications in some food processing equipment. For example, in some food processing equipment that requires high temperature resistance and oil resistance, FVMQ seals may be used to seal devices or connect pipes.
3.4.2 Pharmaceutical Equipment Seals: Rubber may be used in some sealing applications in pharmaceutical equipment. These devices may be required to provide specific sealing properties during pharmaceutical processing and production, such as resistance to high temperatures, chemicals, or cleaning agents.
4.Manufacturing process of FVMQ seals
4.1 Recipe
4.1.2FVMQ base polymer: As the main component, it provides the basic performance and characteristics of FVMQ seals.
4.1.3 Filling: Filling can improve the physical properties and processing performance of seals. Commonly used fillers include silica (SiO2), nanosilica gel, graphite, etc.
4.1.4 Oil-resistant agent: Adding oil-resistant agent can improve the oil-resistant performance of FVMQ seals. Common oil-resistant agents include molybdenum disulfide (MoS2), polytetrafluoroethylene (PTFE), etc.
4.1.5 Processing aids: Processing aids can improve the processing performance and fluidity of seals. Common processing aids include calcium stearate, paraffin, etc.
4.1.6 Vulcanizing agent: The vulcanizing agent is used to promote the vulcanization reaction of the seal and solidify it into a rubbery state. Commonly used vulcanizing agents include peroxides and mercaptans.
4.1.7 Antioxidants: Antioxidants can extend the service life of seals and prevent their degradation due to oxidation during long-term use. Commonly used antioxidants include diphenylamine compounds, phenol compounds, etc.
It should be noted that the specific formulation should be adjusted and optimized based on actual application and performance requirements. During the formulation process, experiments and testing are recommended to verify the performance and reliability of the selected materials and formulations.
4.2 Molding process
4.2.1 Material preparation: Prepare FVMQ materials according to the required formula. Ensure the quality and composition of materials meet requirements.
4.2.2 Mixing: Mix the base polymer, fillers and other additives together. This is usually done by using a rubber mixer or rubber internal mixer to ensure that the materials are mixed evenly and that the required processing properties are achieved.
4.2.3 Molding: Put the mixed materials into the molding equipment. Molding can be accomplished using a variety of methods, including compression molding, extrusion molding, and injection molding.
lCompression molding: Place the FVMQ material into a pre-designed mold, and then apply pressure to fill the entire mold cavity. The FVMQ material is then solidified into the shape of the seal through a heating and cooling process.
lExtrusion molding: The material is heated and pushed into the extrusion mold through the extruder. The extrusion die has the desired cross-sectional shape of the seal. As the material passes through the mold, it cools and solidifies into the shape of the seal.
lInjection molding: Inject heated material into the injection molding machine, and then inject the material into the mold through injection pressure. The material is then solidified into the shape of the seal through a heating and cooling process.
4.2.4 Post-processing: After molding is completed, some post-processing steps may be required. This may include trimming, flash removal, surface preparation, etc. to achieve a final compliant seal.
4.5.5 Quality inspection: Conduct quality inspection on the formed FVMQ seals, including appearance inspection, dimensional measurement, performance testing, etc., to ensure that they meet specifications and requirements.
4.3 Subsequent processing and inspection
4.3.1 Trim and remove flash: Use cutting tools or dies to trim the edges of the seal and remove possible flash or bad edges.
4.3.2 Surface treatment: As needed, special treatment is performed on the surface of the seal, such as spraying lubricant, coating with a protective layer, or performing a specific surface treatment process to improve the performance of the seal or extend its life.
4.3.3 Hardness test: Use a hardness tester to conduct a hardness test on the seal to ensure that its hardness meets the specifications.
4.3.4 Coating or coating: Depending on the needs of a specific application, seals may be coated or coated to increase their wear resistance, chemical resistance, or other special properties.
4.3.5 Appearance inspection: Inspect the appearance of the seal to ensure that there are no obvious defects, cracks, bubbles or other undesirable appearance defects.
4.3.6 Dimensional measurement: Use measuring tools (such as calipers, projectors, coordinate measuring machines, etc.) to measure the dimensions of the seal to ensure that its geometric dimensions meet the specifications.
4.3.7 Performance testing: Perform performance testing on seals according to the requirements of specific applications. This may include compression performance testing, oil resistance performance testing, temperature resistance performance testing, chemical resistance performance testing, etc. to verify the performance specifications of the seal.
4.3.8 Tightness test: Use appropriate test methods, such as air tightness test or liquid tightness test, to verify and evaluate the sealing performance of the seal.
4.3.9 Life test: Under certain working conditions, the seal is subjected to life test to evaluate its durability and reliability in actual use.
These subsequent processing and inspection steps can be adapted and optimized according to specific application needs and product specifications. In actual production, it is recommended to formulate appropriate follow-up processing and inspection plans based on relevant standards and requirements, as well as the results of experiments and tests.
5.FVMQ seal market status and trends
5.1 Market size and growth forecast
- FVMQ seals are widely used in many industries, especially in the automotive, aerospace, energy, chemical and medical fields. As these industries develop and demand increases, the market demand for seals is growing accordingly.
- The growth forecast of FVMQ seals is affected by many factors, including industry development, technological progress, market demand, policies and regulations, etc. Generally speaking, with the application of advanced technology and the increasing demand for high-performance seals, the market prospects for seals are positive.
- In order to obtain the most accurate market size and growth forecast data, it is recommended to refer to industry reports, data and analysis from market research institutions, and information from relevant industry associations. These sources often provide detailed market data, trend analysis and forecasts, which can help you better understand the size and future development trends of the FVMQ seals market.
5.2 Technological innovation and application expansion
5.2.1 High Temperature Performance Improvement: FVMQ seals generally have excellent high temperature resistance, but there are still challenges in extreme high temperature environments. Technological innovation is committed to improving the high-temperature stability and aging resistance of seals to meet applications with higher temperature requirements.
5.2.2 Improved chemical resistance: Seals have good resistance to chemical environments, but their resistance to some special chemicals may be limited. Researchers are developing new FVMQ materials or using fillers and additives to improve their chemical resistance to expand their range of applications.
5.2.3 Low friction and low adhesion: In some applications, reducing friction and adhesion is critical to seal performance. Researchers are developing surface treatment techniques or adding specific lubricants to improve the friction and adhesion properties of FVMQ seals.
5.2.4 Miniaturization of high-performance seals: With the development of microelectronics technology and micro-nano processing, the demand for small and micro seals is increasing. Technological Innovation is committed to developing manufacturing processes and materials for micro-FVMQ seals to accommodate micro- and nanoscale applications.
5.2.5 Application expansion in emerging fields: FVMQ seals have huge application potential in emerging fields, such as new energy, biomedicine and semiconductors. As these areas develop, the applications of FVMQ seals are expanding to provide solutions to specific technical challenges.
5.3 Environmental friendliness and sustainable development
5.3.1 Durability and Long Life: FVMQ seals generally have a long service life and durability and are able to maintain their performance under a variety of harsh environmental conditions. This means the seals last longer, reducing the need for more frequent replacement and scrapping.
5.3.2 Low-energy consumption production: Production usually uses low-energy consumption processes to reduce the consumption of energy resources. In addition, the preparation and processing of FVMQ materials can also adopt more environmentally friendly methods, such as reducing the use of organic solvents and reducing waste generation.
5.3.4 Renewable resources: Silicone materials are usually used, and these materials can be obtained from renewable resources, such as silica and wood fiber. Compared with some traditional synthetic materials, the production process of FVMQ materials relies less on non-renewable resources.
5.3.5 Chemical substitution: In some applications, materials with greater environmental impact, such as fluorine rubber, can be substituted. This helps reduce the use and emissions of harmful chemicals and reduces negative impact on the environment.
5.3.6 Waste Management: Waste can be managed and disposed of effectively. For example, discarded FVMQ seals can be recycled and reused, or properly disposed of to reduce environmental pollution.
