Choosing silicone resin products that are suitable for specific needs can be comprehensively considered from the following aspects:
Performance requirements related to application scenarios
In terms of heat resistance:
If the application scenario is in high-temperature industrial environments, such as automotive engine compartment components, protective coatings for industrial boilers, etc., then it is necessary to choose silicone resins with outstanding heat resistance, such as phenyl silicone resin or methyl phenyl silicone resin. They can withstand temperatures of 300 ℃ or even higher, ensuring that there will be no decomposition, softening, or other situations that affect the use effect under high temperature conditions.
For some ordinary products used at room temperature, such as surface coatings for indoor decorations, conventional methyl silicone resin can usually meet the requirements, and its temperature range is sufficient to cope with such scenarios.
In terms of weather resistance:
When silicone resin is used for outdoor building exterior walls, outdoor billboards, and other places that are exposed to natural environments for a long time, products with excellent weather resistance, such as phenyl silicone resin and fluorosilicone resin, should be preferred. They can resist UV radiation, wind and rain erosion, temperature changes, and other factors for a long time without discoloration, powdering, cracking, and other phenomena, ensuring the long-term stability of appearance and performance.
If used in a relatively stable indoor environment, such as the packaging of indoor electronic devices, the requirements for weather resistance are relatively low. Other performance indicators can be focused on, and silicone resins with slightly weaker weather resistance may also be suitable.
In terms of electrical insulation:
In the field of electronic and electrical appliances, applications such as motor winding insulation paint and insulation protection for high-voltage electrical appliances require the selection of silicone resins with high electrical insulation performance, such as methyl silicone resin and methyl phenyl silicone resin. They have low dielectric constant and high breakdown voltage and other key electrical parameters, which can meet corresponding electrical safety standards, ensure the normal operation of electrical equipment, and avoid electrical accidents.
If it is only used in some non electrical performance dominated occasions, such as ordinary fabric finishing, the requirements for electrical insulation can be appropriately relaxed, and there is no need to focus on this indicator.
In terms of mechanical performance:
For application scenarios such as mold release agents and sealing materials that require external friction and compression, silicone resin with appropriate mechanical strength and good wear resistance should be selected. For example, methyl silicone resin has a higher hardness after curing, which can better play a role in these situations, ensuring that it will not be easily damaged during reverse use and can continue to function accordingly.
In applications such as soft fabric finishing agents that do not require high mechanical strength, silicone resin is more focused on endowing fabrics with softness, smoothness, and other hand related properties. Products such as phenyl silicone resin with good flexibility can be selected.
Adaptability of processing technology
In terms of curing conditions:
If there are conditions for heating and curing in the production process, such as in a professional paint booth in a factory, thermosetting silicone resin can be selected, which can often form coatings or products with better performance after curing; But if heating operation cannot be carried out on the construction site, it is necessary to use silicone resin products that cure at room temperature, which is convenient for construction operation and can ensure normal curing to form the required usage state.
In addition, for some production lines that have special requirements for curing speed, such as rapidly assembling electronic component packaging, silicone resin with fast curing speed should be selected to meet the efficient production rhythm; For some small-scale processing scenarios that require manual operation and relatively ample time, the requirements for curing speed are not as strict.
In terms of solubility and operability:
In the application of coatings, if spraying technology is used, it is necessary for silicone resin to dissolve well in the corresponding organic solvents to form a uniform and stable solution, which is easy to spray evenly through a spray gun; If brushing or other methods are used, the requirements for solubility will be slightly different, as long as it can ensure smooth brushing and no obvious brush marks.
In the application of adhesives, it is necessary to consider whether the viscosity of silicone resin is easy to apply during the bonding process. If it is too thick, it may not be easy to apply evenly, and if it is too thin, it may affect the bonding effect. Therefore, it is necessary to choose products that are compatible with the specific bonding process.
Environmental and safety requirements
In terms of environmental indicators:
Nowadays, many application scenarios have strict requirements for environmental protection. For example, in indoor decoration and processing of children's products, it is necessary to choose silicone resin products that meet relevant national environmental standards, such as low VOC (volatile organic compound) emissions, to reduce the impact on indoor air quality and potential harm to human health.
For non enclosed environments in some industrial fields with relatively relaxed environmental restrictions, the weight of environmental indicators can be appropriately reduced, but basic environmental regulations must also be followed.
In terms of security:
In the application of food contact materials, such as sealing materials for food packaging, it is necessary to use silicone resin that has passed food grade safety certification to ensure that harmful substances will not migrate into food and ensure food safety; When using silicone resin in places with fire prevention requirements, attention should be paid to its flame retardant performance, and products with corresponding flame retardant levels should be selected to reduce the risk of fire.
Cost factors
Regarding budget constraints:
Under the premise of meeting basic performance and quality requirements, prices of silicone resin products of different brands and specifications may vary. If it is large-scale industrial production, cost control is crucial. It is necessary to comprehensively compare the cost-effectiveness of products from different suppliers, choose silicone resins that can meet application needs and have reasonable prices, and avoid excessive pursuit of high performance, which may lead to high costs and affect the market competitiveness of products.
For some special applications that are not very sensitive to cost but have extremely high performance requirements, such as key component protection in the aerospace field, priority is given to ensuring performance, and cost considerations are relatively low.
Taking into account the above factors, it is possible to more accurately screen silicone resin products that are suitable for specific needs.
What factors can affect the electrical insulation performance of silicone resin? Is there a universal silicone resin product that can meet various needs? What is the relationship between the price and quality of silicone resin products?
Room termperature curing polysilazane, pls check
IOTA 9150, IOTA 9150K.
High termperature curing polysilazane, pls check
IOTA 9108,
IOTA 9118.