How MQ silicone resin improves the tear resistance of silicone
MQ silicone resin improves tear resistance in silicone rubber by forming a 3D network structure through crosslinking, enhancing the strength and toughness of the material.
Here's a more detailed explanation:
MQ Silicone Resin:
MQ resins are a type of silicone resin characterized by a combination of methyl (M) and quaternary (Q) units in their structure.
Reinforcement Mechanism:
MQ resins act as reinforcing agents, improving the mechanical properties of silicone rubber.
They enhance the hardness, tensile strength, and tear strength of the silicone rubber.
The small molecular weight and high vinyl content of MQ resins allow for good compatibility and dispersion within the silicone rubber matrix.
The MQ resin molecules can chemically combine with the silicone rubber, forming a strong 3D network structure through crosslinking.
This crosslinking improves the material's ability to resist deformation and tearing under stress.
Crosslinking:
The Si-OH groups of the MQ resin can form hydrogen bonds or chemically react with the hydroxyl groups of the silicone rubber, further crosslinking with the curing agent.
This crosslinking process leads to a more robust and tear-resistant material.
Other Benefits:
MQ resins can also improve the adhesion properties of silicone rubber.
They can be used as reinforcing fillers, defoamers, and anti-sticking agents.