Thermoset — Process Challenge

Kopplungsmittel für gefüllte Duroplaste

Verbesserung der Füllstoffdispersion, Viskositätsreduktion und Steigerung der mechanischen Eigenschaften in gefüllten Duroplasten durch Silan- und Titanat-Kopplungsmittel
Updated Jun 2026
Lösungsansatz

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
Polymer & Process Definition
Identify the resin and process (extrusion, molding, film) and the targets — thermal stability, clarity, flame retardance, slip, or color.
2
Additive Selection
Match stabilizers, antioxidants, plasticizers, lubricants, flame retardants, or masterbatch carriers to the polymer and processing temperatures.
3
Compounding Trial
Confirm loading and dispersion on a compounding or molding trial, checking processability, mechanicals, and aesthetics against the control.
4
Validation & Scale-Up
Verify long-term performance (heat aging, migration, weathering) and lock the formulation, packaging, and lot specs for production.
Recommended Chemistries (9)
3-glycidoxypropyltrimethoxysilane (GPTMS)
CAS 2530-83-8
Silane & Organosilane
Primary epoxy silane
Epoxy silane couples mineral filler to epoxy/anhydride thermoset; the glycidoxy group reacts into the resin network while silanols bond the filler, raising strength and cutting viscosity
Vapor Pressure: 0.002
Schnellansicht
Alle Details
3-glycidoxypropyltriethoxysilane (GPTES)
CAS 2602-34-8
Silane & Organosilane
Ethoxy epoxy silane
Ethoxy epoxy silane with slower hydrolysis for longer working time during filler treatment
Physical Description: Flüssig
Schnellansicht
Alle Details
3-aminopropyltriethoxysilane (APTES)
CAS 919-30-2
Silane & Organosilane
Primary amino silane
Amino silane couples fillers into amine-cured epoxies and anhydride systems for improved dispersion and interfacial adhesion
Schmelzpunkt:-70 °C   Siedepunkt:217 °C   Dichte:0.94 at 25 °C
Schnellansicht
Alle Details
Hydrophobic Modified Fumed Silica
CAS 68909-20-6
Silane & Organosilane
Treated silica for non-polar systems
Pre-treated reinforcing filler showing the dispersion/viscosity benefit of a hydrophobized surface in resin systems
Schnellansicht
Alle Details
3-aminopropyltrimethoxysilane
CAS 13822-56-5
Silane & Organosilane
Methoxy amino silane
Trimethoxy (faster-hydrolyzing) analog of the already-listed APTES; primary amine bonds mineral filler into the amine/epoxide-cured epoxy and anhydride thermosets explicitly named on the page. Same role, same problem.
Physical Description: Clear to straw-colored liquid with an ammoniaca…
Schnellansicht
Alle Details
Vinyltris(2-Methoxyethoxy)Silane
CAS 1067-53-4
Silane & Organosilane
Moisture-cure systems
A-172 vinyl coupling agent; vinyl group radical-copolymerizes into the styrene crosslink of the peroxide-cured unsaturated polyester and vinyl ester resins named on the page, coupling mineral fillers in exactly those in-scope systems.
Schnellansicht
Alle Details
Vinyltrimethoxysilan
CAS 2768-02-7
Silane & Organosilane
PE crosslinking and polyester
A-171 vinyl silane; radical-copolymerizes with the unsaturated polyester / vinyl ester matrix during peroxide cure to bond treated mineral filler. Page names both polyester and vinyl ester, so scoped to filler coupling here it is a genuine fit (distinct from its PE-crosslinking use, which is a different page).
Schmelzpunkt:ˆ'97°C   Siedepunkt:123°C at 1013 hPa (converted to 101.3 kPa) (760…   Dichte:Specific Density: 0.94 (water = 1)
Schnellansicht
Alle Details
3-(2-Aminoethylamino)propyltrimethoxysilane
CAS 1760-24-3
Silane & Organosilane
Enhanced adhesion
DAMO / A-1120 / Z-6020 diamino silane; two reactive amines give stronger filler-to-resin coupling in the epoxy and anhydride thermosets on the page versus monoamino silanes. Genuine same-use complement to APTES.
Physical Description: Light yellow liquid   Vapor Pressure: 0.03
Schnellansicht
Alle Details
3-glycidoxypropyl methyldiethoxy silane
CAS 2897-60-1
Monoalkyl epoxy silane
Epoxy-functional coupling agent; glycidoxy reacts into the epoxy/anhydride matrix on the page, and the methyl (difunctional) substituent deliberately builds a lower-crosslink, more flexible filler interphase. Documented coupling-agent use, complementary to the listed trifunctional GPTMS/GPTES.
Schnellansicht
Alle Details

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