Product Overview
Polyester segments and hydroxyl groups grafted into the Si-N backbone trade a few hardness points (≥2H) for elastomer-class conformability. That trade unlocks lithium-battery high-voltage insulation, enameled wire and flexible cable systems, and any substrate that flexes, vibrates or thermally cycles.
Beyond electricals it serves high-strength cement products, thermal-insulation and reflective coatings, dielectric base primers, ship hull protection, and bonding duty for FRP, rigid plastics, concrete and electrical encapsulation — from -30 to 300 °C.
Key Benefits
180° bend without failure
Full flexibility under microscope examination — insulation that moves with wire, cable and flexing parts.
4-hour boiling water endurance
No blistering, delamination or cracking — validated wet-heat robustness for battery and marine duty.
Lithium-battery insulation pedigree
Purpose-designed for new-energy high-voltage insulating coatings and flexible cable systems.
Bonds difficult substrates
FRP, rigid plastics, concrete and encapsulation duty ride the same hydroxyl-rich chemistry.
Typical Applications
- High-voltage insulation for lithium batteries
- Flexible cables & enameled wire
- Cement products
- Thermal-insulation/reflective coatings
- FRP & concrete bonding
- Encapsulation
Solution guides: Electrical Insulation & Electronics ProtectionResin, Rubber & Composite Modification
Technical Data
| Test Item | Performance Indicator | Test Method |
|---|---|---|
| Appearance & Color | Colorless transparent liquid | Visual |
| Density | 0.89–0.95 g/cm³ | GB/T 1723-1993 |
| Mixed Viscosity | 21–26 s | GB/T 9286-1998 |
| Adhesion | Grade 0 | GB/T 11944-2002 |
| Water Resistance | 4 h boiling water: no blistering, delamination or cracking | GB/T 6742-2007 |
| Bending Resistance | 180° bend: no peeling or cracking under microscope | GB/T 6739-2006 |
| Pencil Hardness | ≥2H | GB/T 10125-2021 |
| Neutral Salt Spray Resistance | 30 d: no blistering, cracking or rust spots | GB/T 1865-2009 |
| Artificial Aging Resistance | 30 d: no rust, chalking or cracking, slight discoloration | GB/T 26490-2011 |
| Water Contact Angle | >110° | GB/T 1723-1993 |
| Theoretical Coverage | 10–15 m²/kg |
| Dry Film Thickness | 35–45 µm |
| Curing | Room temperature >24 h, or 140 °C / 30–40 min |
| Pot Life | 6 h |
| Recommended Service Temperature | -30 to 300 °C |
| Diluent | Aromatics, esters, ethers |
Values from the SILZ-PEPSZ technical data sheet. Complete TDS with test conditions available on request.
Curing & Processing Guidance
Prepare metals to Sa 2.5 (minimum St 3); for FRP, plastics and concrete, abrade and clean per our substrate note. Filter the one-component material through a 120-mesh sieve.
Spray at 35–45 µm dry film with a 1.0 mm nozzle; coverage runs 10–15 m²/kg. Pot life is 6 hours.
Ambient cure: surface dry >1 h, touch dry >2 h, full cure >24 h. Heat option: 140 °C for 30–40 minutes — the gentlest bake schedule in our line, chosen to respect temperature-sensitive assemblies like battery components.
Substrate Compatibility
Metals, enameled wire and cable insulation systems, FRP, rigid plastics, concrete and cementitious products, ship hulls. For battery-cell and pack components, we support withstand-voltage and flexibility validation on your part geometry.
SILZ-PEPSZ — Purchasing & Application FAQ
Why accept ≥2H hardness when other grades offer 6-8H?
Because those grades crack when bent. PEPSZ trades hardness for verified 180° flexibility and boiling-water endurance — on wire, cable, battery parts and flexing structures, that trade is the requirement, not a compromise. For rigid parts, choose a harder sibling.
Is it suitable for lithium battery pack components specifically?
High-voltage insulation for new-energy lithium batteries is a design application: ≥10¹³-class insulation behavior in a flexible, wet-heat-proof film with a gentle 140 °C bake option. Send your component drawings and withstand-voltage spec for a validation plan.
Can PEPSZ primer under other coatings?
Yes — it is used as a dielectric base primer. Its hydroxyl-functional surface accepts compatible topcoats; run an intercoat adhesion check with your system, and we will advise pairings.
TDS / SDS / COA & Samples
Technical Data Sheet, Safety Data Sheet and batch Certificate of Analysis are available for SILZ-PEPSZ, and a COA accompanies every shipment. Evaluation samples ship with starting-parameter guidance.
Packaging: Available in 1 kg, 2 kg, 5 kg and 25 kg pails. Use within the 6-hour pot life after opening.
SDS & batch COA on request · Reply within 1 business day.