English
Español
tiếng việt
русский
Two-component, addition-cure silicone elastomer system offering excellent flowability and low viscosity for precise mold filling.
Fast room-temperature cure with optional heat acceleration, enabling high-throughput manufacturing cycles.
Exceptional thermal stability and long-term flexibility across a wide service temperature range (–55 °C to +200 °C).
Low compression set and high elongation at break, ensuring reliable sealing and dynamic performance in demanding environments.
UL 94 V-0 rated for flame resistance and compliant with RoHS and REACH regulatory requirements.
Automotive sensors and electronic control units requiring environmental protection and vibration damping.
Industrial enclosures and housings for power electronics, including inverters and battery management systems.
Medical device potting and encapsulation where biocompatibility support and sterilization resistance are critical.
LED lighting modules requiring optical clarity, thermal management, and long-term UV stability.
Aerospace-grade conformal coatings and gasketing for avionics and flight-critical subsystems.
| Chemical Type | Platinum-catalyzed addition-cure liquid silicone rubber (LSR) |
| Product Form | Two-part kit: Part A (base) and Part B (curing agent), supplied separately |
| Appearance | Part A: Translucent, low-viscosity liquid; Part B: Clear to pale yellow liquid |
| Mix Ratio by Weight | 10:1 (A:B) |
| Cure Mechanism | Addition reaction (no by-products) |
| Shore A Hardness (Cured) | 50 ± 5 |
| Elongation at Break (Cured) | ≥ 350% |
| Primary Applications | Potting, encapsulation, gasketing, and soft-touch overmolding |
Q1: What is the primary function of the DOWSIL 3-6512 Elastomer Kit in silicone elastomer formulations?
A: The DOWSIL 3-6512 Elastomer Kit is a two-part platinum-catalyzed addition-cure system designed to formulate high-performance, heat-stable, and low-compression-set silicone elastomers—commonly used for precision molding of seals, gaskets, and medical device components.
Q2: Is this kit suitable for applications requiring biocompatibility or regulatory compliance?
A: While DOWSIL 3-6512 is formulated with high-purity raw materials and is commonly selected for healthcare-adjacent applications, final biocompatibility must be verified by the formulator through appropriate testing and regulatory evaluation—including ISO 10993 assessments—as Dow does not pre-certify end-use devices or materials.
Q3: How should the two components be mixed, and what precautions are necessary to ensure optimal cure performance?
A: Components A and B must be mixed thoroughly at the specified ratio—typically 1:1 by weight—using clean, non-contaminated equipment. Avoid exposure to inhibitors such as sulfur, amines, or tin compounds, and ensure substrates and mixing tools are free of residual oils or release agents that may interfere with platinum catalysis.
Q4: Can DOWSIL 3-6512 be post-cured, and what benefits does post-curing provide?
A: Yes, post-curing is recommended to maximize thermal stability, mechanical properties, and long-term compression set resistance. Typical post-cure conditions involve heating at elevated temperatures—for example, 150–200 °C for 2–4 hours—though exact parameters depend on part geometry and processing requirements.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
