How to enhance the adhesive degree of epoxy silicone resin? Epoxy silicone resin is a very excellent modified silicone resin. On the basis of silicone resin, a certain degree of structural change has been carried out to enhance the performance and expand the application.
1. Use membranous epoxy glue
Membranous epoxy adhesive is referred to as epoxy film. Bisphenol A solid epoxy resin and multifunctional epoxy resin with high relative molecular weight are mostly used in manufacturing. When bonding, the film is easy to ensure that the thickness of the adhesive layer is uniform, so the bonding strength is very high.
2, add reinforcing filler
The addition of filler reduces the coefficient of thermal expansion and curing shrinkage, and reduces the internal stress. When the crack occurs under overload, the adhesive layer with filler can also prevent the crack propagation, so as to improve the bonding strength.
3. Inorganic whisker enhancement
Whisker is a fiber with very small diameter grown in the form of single crystal under special conditions. It has a highly ordered atomic arrangement structure, so it can approach the theoretical strength of interatomic valence bonds, and has great potential for strengthening epoxy adhesives. Available whiskers include zinc oxide whisker, calcium sulfate whisker, calcium carbonate whisker, aluminum borate whisker, titanium based whisker, hydroxyapatite whisker, magnesium hydroxide whisker, basic magnesium sulfate whisker, silicon carbide whisker, etc.
4. Fiber reinforcement
Glass fiber, carbon fiber, aromatic polyamide fiber (Kevlar fiber), vinylon fiber, polyvinyl alcohol fiber, polyphenylene sulfide fiber, stainless steel fiber, basalt fiber, diole stone fiber and so on can strengthen the epoxy adhesive.
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