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Other advantages of toluene solvent methyl MQ silicone resin
Source:iotachem.com
PostTime:2025-07-20 22:11:06
In addition to the mentioned solubility, process adaptability, performance stability and environmental controllability of toluene solvent methyl MQ silicone resin, it also has the following technical advantages:


1. Advantages of molecular structure: three-dimensional spherical three-dimensional mesh design
The molecular structure of methyl MQ silicone resin is composed of a high-density cage-like SiO₂ core and an outer low-density methylsiloxane layer, forming a three-dimensional spherical three-dimensional mesh structure.This design gives the material a unique combination of properties:


High light transmittance: The Si-O bond energy in the molecular structure is high (460kJ/mol), and the methyl group is evenly distributed, so that the material's light transmittance can reach more than 98%, which is suitable for LED packaging, optical coating and other fields with extremely high light transmittance requirements.
Balance of mechanical strength and flexibility: The cage-shaped SiO₂ core provides rigid support, while the outer methylsiloxane layer gives the material moderate flexibility, so that the methyl MQ silicone resin can simultaneously increase the tensile strength (up to 10MPa) and tear strength (up to 30kN/m) in the reinforcement of silicone rubber, and the rubber has good fluidity before vulcanization, which is easy to process.
2. Wide temperature domain tolerance: stable application in extreme environments
The Si-O bond skeleton structure of methyl MQ silicone resin gives it excellent temperature resistance and can be used for a long time in extreme temperature environments from -60℃ to +300℃.For example:


High temperature application: In the H-class motor insulation package, methyl MQ silicone resin can withstand high temperatures of 300℃, while maintaining stable electrical insulation properties to ensure the safe operation of the motor under high temperature conditions.
Low temperature application: In the sealing of buildings in extremely cold areas, methyl MQ silicone resin can still maintain flexibility at -60℃, avoid the brittleness and cracking of the sealant, and ensure the sealing and durability of the building.
3. Surface performance advantages: outstanding water repellency and isolation
The methyl group in the molecular structure of methyl MQ silicone resin forms a dense hydrophobic layer, giving the material excellent surface properties:


Water repellent: The contact angle between the material and water is greater than 90°, which is widely used in the field of waterproof coatings.For example, in the production of daily chemical lipsticks, methyl MQ silicone resin can be used as a waterproof ingredient to enhance the durability and anti-makeup properties of lipsticks.
Isolation: Methyl MQ silicone resin can be used as a semi-permanent mold release agent to achieve efficient mold release in plastic molding.For example, in the production of polyurethane products, the use of methyl MQ silicone resin mold release agent can achieve a surface residue rate of less than 0.5% after 50 mold release cycles, which significantly improves production efficiency.
Fourth, the advantages of chemical stability: corrosion resistance and aging resistance
The Si-O bond skeleton structure of methyl MQ silicone resin makes it have excellent corrosion resistance to acids, alkalis and other chemicals, as well as good aging resistance.:


Corrosion resistance: In the chemical industry, methyl MQ silicone resin can be used as an additive for coatings and adhesives to improve the chemical resistance of coatings.For example, in the protection of marine environmental equipment, coatings with methyl MQ silicone resin can effectively resist seawater corrosion and extend the service life of equipment.
Aging resistance: The molecular structure of methyl MQ silicone resin is stable and has excellent resistance to ultraviolet radiation.In outdoor billboard coatings, after 5 years of ultraviolet irradiation, the gloss retention rate of the coating is still ≥85%, which is significantly better than traditional organic coatings.
5. Flexibility of application form: dual choice of powder and liquid
Methyl MQ silicone resin can be provided in two forms: powder and toluene solution according to application needs to meet different process requirements:


Powder form: It is suitable for adding to the system after direct heating and melting. For example, in the reinforcement of silicone rubber, the powdered methyl MQ silicone resin can be directly mixed with the silicone rubber base material, and uniform dispersion can be achieved by heating and melting.
Toluene liquid form: Suitable for adding to the system after the solvent is dispersed, such as in the field of electronic packaging, methyl MQ silicone resin can be dissolved in toluene and evenly mixed with other packaging materials to achieve effective packaging of electronic components.
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