Basic Characteristics of Hydroxyl-Terminated Fluorosilicone Oil
Hydroxyl-terminated fluorosilicone oil is a special type of organic silicone material with a unique molecular structure and excellent physical and chemical properties. Its molecular chains contain hydroxyl functional groups, which makes it highly reactive when reacting with cross-linking agents and other components, effectively forming a three-dimensional network structure. This provides condensation-type room temperature vulcanizing silicone rubber with good mechanical properties and stability. Additionally, due to the introduction of fluorine groups, hydroxyl-terminated fluorosilicone oil also has excellent oil resistance, solvent resistance, low surface tension, and low refractive index. These characteristics give it a wide range of applications in various fields.
Application as a Base Gel
In condensation-type room temperature vulcanizing silicone rubber, hydroxyl-terminated fluorosilicone oil can be used as a base gel. The base gel is one of the main components of silicone rubber and determines the basic properties and application range of the rubber. Hydroxyl-terminated fluorosilicone oil, as a base gel, can be fully mixed with reinforcing agents, cross-linking agents, catalysts, and other components to form a uniform gel. During the vulcanization process, the hydroxyl groups in the hydroxyl-terminated fluorosilicone oil molecular chains react with the cross-linking agent through condensation, generating cross-linking bonds and gradually curing the gel to form elastic and adhesive silicone rubber. This base gel made from hydroxyl-terminated fluorosilicone oil not only has good flexibility and elasticity but also has excellent high and low temperature resistance, weather resistance, and dielectric properties, maintaining stable performance over a wide temperature range (-60 to 300℃).
Application as a Diluent
In addition to being used as a base gel, hydroxyl-terminated fluorosilicone oil can also be used as a diluent in the preparation of condensation-type room temperature vulcanizing silicone rubber. In practical applications, to adjust the viscosity and fluidity of silicone rubber to make it easier to process and operate, a certain amount of diluent is usually added. Hydroxyl-terminated fluorosilicone oil, as a diluent, can effectively reduce the viscosity of the gel, improve its fluidity and coating properties, making it easier to form a uniform gel layer on various substrate surfaces. At the same time, due to the good compatibility of hydroxyl-terminated fluorosilicone oil with the base gel, adding the diluent does not affect the final properties of the silicone rubber. In the preparation of sealants and mold rubbers, by reasonably adjusting the amount of hydroxyl-terminated fluorosilicone oil, silicone rubber products with different viscosities and properties can be prepared to meet the needs of different application scenarios.
Application in Sealants
In the field of sealants, the application advantages of hydroxyl-terminated fluorosilicone oil are particularly prominent. Due to its low surface tension and good fluidity, it can effectively fill the tiny gaps and pores on various substrate surfaces, forming a dense sealing layer and providing excellent sealing performance. At the same time, the oil resistance and solvent resistance of hydroxyl-terminated fluorosilicone oil enable it to maintain stable properties when in contact with various oils and solvents, without swelling, deformation, or failure. In addition, its good weather resistance and high and low temperature resistance also ensure that the sealant will not age or crack due to environmental changes during long-term use, thus extending the service life of the sealant.
Application in Mold Rubber
In the preparation of mold rubber, hydroxyl-terminated fluorosilicone oil also plays an important role. Mold rubber needs to have good flexibility, elasticity, and demolding properties to ensure that it can accurately replicate the shape and details of the model during mold making and use, and can be easily demolded without damaging the model. Hydroxyl-terminated fluorosilicone oil, as a base gel or diluent, can provide mold rubber with excellent flexibility and elasticity, enabling it to better adapt to the shape and size changes of the model during mold making. At the same time, its low surface tension and good demolding properties also make it easier to demold the mold rubber without damaging the model. In addition, the heat resistance and chemical resistance of hydroxyl-terminated fluorosilicone oil also ensure the stability and durability of mold rubber in high-temperature and chemically corrosive environments.
Application Advantages and Prospects
The application of hydroxyl-terminated fluorosilicone oil in condensation-type room temperature vulcanizing silicone rubber has many advantages. Its excellent physical and chemical properties enable silicone rubber products to maintain stable performance in various harsh environments, meeting the demand for high-performance sealants and mold rubbers in different industries. At the same time, the application of hydroxyl-terminated fluorosilicone oil also improves the processing performance and production efficiency of silicone rubber, reducing production costs. With the continuous progress of technology and the increasing market demand, the application prospects of hydroxyl-terminated fluorosilicone oil in the field of condensation-type room temperature vulcanizing silicone rubber will be even broader. In the future, with further research and development of its properties, hydroxyl-terminated fluorosilicone oil is expected to be applied and promoted in more fields.
Anhui IOTA Silicone Oil Co., Ltd., as a professional organic silicone product manufacturing enterprise, has rich experience and advanced technology in the production and research and development of hydroxyl-terminated fluorosilicone oil. The hydroxyl-terminated fluorosilicone oil produced by the company has stable quality and excellent performance, and has been recognized and praised by a wide range of users.
