CFS-243 N-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane KH792 DAMO CAS 1760-24-3 has both organic and inorganic reactivity. CFS-243 can react with organic polymers as well as with glass or other inorganic mineral surfaces.

I、Properties
Improved adhesion; improved dry/wet tensile strength and modulus of composites; improved dry/wet flexural strength and modulus of composites; improved dry/wet compressive strength; improved compatibility of inorganic fillers with organic polymers.

II、Applications
CFS-243 is used as a coupling agent for clay-reinforced natural rubber and NBR. The physical properties and dynamic mechanical properties of clay are improved after treatment with this product compared to untreated clay.
CFS-243 can be used as a coupling agent for mineral filler reinforced nylon and PBT resins.
It is used for glass fiber reinforced phenolic resins, honey amine resins and epoxy thermosetting composites. It can be used as glass fiber treatment agent and resin additive.
Used as an additive for thermosetting resins for castings and wear parts to improve performance.
Used as coupling agent for phenolic resin, honey amine resin and other organic resins to improve the adhesion of these resins for glass, mineral fiber insulation, wear-resistant parts and film products.

III、Usage
When used as a resin additive, the amount of silane added is generally 1% of the solid weight of the resin. The optimum level of additive for each specific application should be determined by experimenting with several concentrations. When used as an additive for epoxy coatings, this product can improve the adhesion of the coating, especially in very humid environments. As with other silanes.
CFS-243 can be applied to inorganic surfaces as a dilute aqueous solution (0.1 to 0.5% silane concentration). To prepare this aqueous solution, simply add the silane to water and stir. However, inadequate stirring when adding CFS-243 to water may result in locally high concentrations, which in turn may lead to the formation of colloidal particles. It is generally recommended that the pH of the silane solution be adjusted to 3.0 to 4.5 with an organic acid such as acetic acid to achieve optimal performance of reinforcing materials such as glass fibers. After the silane has been applied to the glass or mineral surface, air drying or rapid drying at 100 to 120°C may be used to achieve complete condensation of the silanol group on the surface and to remove water and/or trace amounts of methanol from the surface due to hydrolysis. The optimum application volume and drying conditions (e.g. time, temperature, etc.) for each specific application should be determined before applying to the industrial production process.