Processing technology
Silane coupling treatment
Uniform surface treatment
Filler surface can be treated with a silane coupling agent at the monolayer level.
Point
- ● Processing agent compatible with respective resin system is viable
- ● Reduced viscosity when mixed into resin
- ● Improved resin adhesion
● Mechanism
Surface treatment improves compatibility with resin. This can reduce resin viscosity.
● Effects
-
Difference in interface adhesion strength with resin caused
by presence/absence of the silane coupling treatment
-
Reduced resin viscosity as a result
of silane coupling treatment
Compatibility of the matrix with the silica surface and resin improves due to surface treatment.
Physical properties also improve accordingly.
● Silane coupling agent examples
| Silane coupling agent | Target resin | Silane coupling agent | Target resin |
|---|---|---|---|
| Dimethyl silane (CH3O)2Si(CH3)2 |
— | Epoxy silane |
PPS, Epoxy |
| Hexyl silane (CH3O)3Si(CH2)5CH3 |
— | Phenyl amino silane |
PS, PA, Epoxy |
| Phenyl silane (CH3O)3SiC6H5 |
Olefin, LCP, PEEK, PI | Methacry silane |
Olefin, ABS, Poly Ester, Acryl |
| Vinyl silane (CH3O)3SiCH=CH2 |
Olefin, (PEEK) | Isocyanate silane (C2H5O)3SiC3H6N=C=O |
Urethane |
Not only above silane coupling agents, but also various surface treatment agents are available.
