Momentive TSE3941-W Flame-Retardant Electronic Adhesive Sealant
Basic Properties
| PROPERTY | VALUE | CONDITION |
| Uncured Properties |
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| Appearance | Non-flowable paste, white | - |
| Tack-free time | 5 min | 23°C |
| Cured Properties |
| 3 days @ 23°C, 50% RH |
| Density | 1.71 g/cm³ | - |
| Hardness (Type A) | 76 | JIS K 6249 |
| Tensile Strength | 4.2 MPa {43 kgf/cm²} | - |
| Elongation | 80% | - |
| Adhesion Strength | 2.0 MPa {20 kgf/cm²} | Aluminum lap shear, 7 days |
| Volatile Siloxane (D3-D10) | 0.005 wt% | In-house test method |
| Thermal Conductivity | 0.7 W/(m·K) {1.7×10⁻³ cal/(cm·s·°C)} | - |
Product Introduction
Momentive TSE3941-W is a one-component, non-corrosive, low volatile silicone adhesive sealant that cures with atmospheric moisture to form an elastic, flame retardant silicone rubber. Key features include fast tack-free time (5 min @23°C), UL94V-0 certification (File E56745), non-corrosivity to metals, and low odor alcohol vapor release during cure.
Advanced Technical Properties
Flame Retardancy & Electrical Properties: UL94V-0 certified for high-voltage applications. Stable electrical performance with initial volume resistivity of 2.3×10¹⁵ Ω·cm, maintained at 6.3×10¹⁵ Ω·cm after 1000h@150°C and 2.1×10¹⁵ Ω·cm after 500h@60°C/90%RH.
Adhesion & Heat Resistance: Excellent adhesion to aluminum, copper, epoxy resin (see table below), but poor to polyethylene/PTFE. After 500h@150°C, copper adhesion strength retains 1.6 MPa (initial: 2.1 MPa).
| Substrate | Adhesion (No Primer) |
| Aluminum | O (Cohesive failure) |
| Copper | O |
| Epoxy resin | O |
| Polyethylene | X (Adhesive failure) |
| PTFE | X |
Application Scenarios
High-voltage parts: Flame retardant bonding for power modules and transformers (e.g., telecom base station power units).
Waterproof sealing: Moisture-proof sealing for communication device housings and sensor ports (e.g., 5G antenna sealing).
Industrial flame retardancy: Fireproof encapsulation for EV battery pack high-voltage wire connections (industry-verified same model application).
High-temperature sealing: Motor coil fixation and insulation protection in 150°C environments.
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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