Methyl MDT Silicone Resin
Methyl MDT Silicone Resin is a high-performance silicone resin made of M, D, and T units. Its 3D structure provides excellent heat resistance, adjustable refractive index, and strong insulation. It’s ideal for LED encapsulation, high-temp coatings, electronic potting, and mold release.
Product Overview
Methyl MDT Silicone Resin is a high-performance organopolysiloxane resin composed of monofunctional (M), difunctional (D), and trifunctional (T) siloxane units. This uniquely balanced MDT structure forms a highly cross-linked, three-dimensional molecular network, offering exceptional thermal stability, customizable optical refractive index, and outstanding electrical insulation.
With its tunable properties and compatibility with various systems, Methyl MDT Silicone Resin is ideal for demanding applications such as LED encapsulation, high-temperature coatings, electronic potting, and mold release systems.
Key Properties
Tunable Refractive Index
Ideal for optical-grade encapsulants in LED and photonics applications, enabling better light output and minimal internal reflection.Superior Thermal Resistance
Withstands continuous high temperatures, making it suitable for industrial coatings, PCB protection, and electric insulation.Outstanding Dielectric Properties
Delivers high volume resistivity and dielectric strength, essential for electronic insulation materials.Excellent Film-Forming Ability
Forms tough, clear, hydrophobic films with high hardness and weather resistance.Hydrophobic and UV Resistant
Protects surfaces from moisture, chemical corrosion, and UV degradation, even in outdoor and high-humidity environments.Improved Mold Release and Surface Protection
Acts as a semi-permanent release agent for thermoplastics, rubbers, and adhesives.
Typical Specifications
| Parameter | Typical Value |
|---|---|
| Appearance | White to light yellow powder / flake |
| Chemical Structure | Methyl MDT polysiloxane |
| Solid Content | ≥97% (powder); 50–60% (solution) |
| Thermal Resistance | Up to 600 °C (depending on formulation) |
| Refractive Index | Customizable (1.41–1.55) |
| Dielectric Strength | ≥10¹³ Ω·cm (volume resistivity) |
| Solubility | Soluble in xylene, toluene, and silicone oils |
| Storage Stability | 12–24 months (sealed at ≤25°C) |
Recommended Applications
LED Encapsulation & Optoelectronics
Used as a base resin in high-transparency, high-RI LED encapsulants, improving light extraction efficiency.High-Temperature Protective Coatings
Offers excellent film integrity and thermal stability for industrial ovens, motors, and heat-resistant surfaces.Electronic Potting & Conformal Coatings
Ideal for protecting electronic components such as transformers, PCB boards, and power modules from heat and moisture.Advanced Mold Release Formulations
Provides lasting release effect under elevated temperatures; suitable for injection molding and adhesive systems.Silicone Rubber Reinforcement
Acts as a reinforcing additive in LSR and RTV systems, improving mechanical strength and clarity.Weatherproof Architectural Coatings
Enhances gloss, hardness, and UV resistance in building sealants and protective topcoats.
Recommended Silico® Grades
| Grade Code | Unit Composition (M:D:T) | Refractive Index | Functionality | Application Highlights |
|---|---|---|---|---|
| Silico® MDT‑NE | ~0.30 : 0.30 : 0.40 | 1.42 – 1.46 | Non-reactive | Clear coatings, film additives for esthetic gloss |
| Silico® MDT‑V | As above + ≤3 mol% vinyl | ~1.44 ± 0.02 | Vinyl-functional (Si–Vi) | Addition-cured silicone elastomers, adhesives |
| Silico® MDT‑H | As above + ≤0.5 wt% Si–H | ~1.44 ± 0.02 | Hydride-functional (Si–H) | Platinum-cure crosslinkers, optical-grade sealants |
Usage Guidelines
Addition Level: 1%–50% depending on desired thermal, optical, or dielectric performance
Processing: Can be used as powder, flakes, or solvent dispersion; curing by heat or catalyst is recommended for crosslinking
Compatible Systems: Silicone rubber, epoxy, acrylic, alkyd, and hybrid resin formulations
Packaging & Storage
Packaging Options:
Powder/flake: 25kg or 50kg fiber drums
Solution: 40kg plastic drums
Storage Conditions:
Store in a sealed, dry environment below 25°C
Avoid moisture exposure
Shelf life: 12–24 months when unopened
Transportation:
Non-hazardous chemical; follow standard industrial transport protocols
Why Choose Our Methyl MDT Silicone Resin?
Optimized MDT ratio for balanced mechanical, thermal, and optical performance
Proven compatibility with electronic, optoelectronic, and industrial coatings
Strong hydrophobic and weather-resistant performance
Custom formulation support and technical guidance available
Jessica G.
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