Momentive TSE3996 Conformal Coating and LED Moistureproofing Silicone
Basic Properties
| Property | Value | Test Condition |
| Appearance | Flowable | Visual |
| Viscosity (23°C) | 1.7 Pa·s / 17 P | JIS K6249 |
| Tack-Free Time | 10 min | 23°C, 50% RH |
| Hardness (Type A) | 23 | 7 days @23°C/50% RH |
| Tensile Strength | 1.2 MPa / 12 kgf/cm² | 7 days @23°C/50% RH |
| Elongation | 150% | 7 days @23°C/50% RH |
| Volume Resistivity | 2.0×10¹⁵ Ω·cm | 7 days @23°C/50% RH |
Product Introduction
TSE3996 is a one-component, low volatile silicone coating that cures rapidly upon exposure to atmospheric moisture, forming an elastic silicone rubber. It exhibits exceptional primerless adhesion to metals (copper, steel, aluminum), plastics, ceramics, and glass, while releasing minimal alcohol vapor during curing (<0.028% volatile siloxane). Its solventless formulation ensures low odor and non-corrosive performance, complying with MIL-A-46146B standards.
Enhanced Attributes
- Low Volatility: Volatile siloxane (D3-D10) content ≤0.028 wt% (in-house test)
- Fast & Mild Cure: Tack-free within 10 min @23°C; alcohol-based vapor only
- Corrosion Safety: Passes MIL-A-46146B corrosion test on copper/steel
- Critical Adhesion Data:
- Without Primer: Cohesive failure on copper, steel, glass (100%)
- Challenging Substrates:
- Polypropylene (PP): Requires XP80-A5363 primer (△ adhesion)
- PTFE: Poor adhesion even with primers (✕)
Application Scenarios
- Conformal Coating for PCBs
- Protects electronic circuits against moisture/dust (Volume resistivity: 2×10¹⁵ Ω·cm)
- Used in automotive sensors & industrial controllers (per Momentive case studies)
- LED Display Potting
- Encapsulates LED modules with 0.18 W/(m·K) thermal conductivity
- Applied in outdoor signage due to UV stability
- Thin-Section Potting
- Fills gaps <1mm in connectors (Flowable viscosity: 1.7 Pa·s)
FAQ
1. Who are we?
We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).
2. What products do you offer?
we supply high-performance adhesives and sealants from global leaders including:
Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.
3. How do you guarantee product quality?
Quality assurance through:
Mandatory pre-production samples approval
Final inspection by QC team before shipment
International certifications: SGS, UL, FDA, RoHS, REACH
4. Why choose us over other suppliers?
Reliable Supply:Authentic products from top manufacturers
Expert Support:Technical guidance for product selection
Global Compliance:Certifications meeting target market standards
Efficient Service:Customized solutions & professional support
5. What services do you provide?
Delivery:EXW/FOB/CIF
Payment:USD/EUR/CNY/HKD via T/T, L/C
Support:Technical consultation & logistics coordination
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