Highly flexible silicone elastomer blend offering excellent low-temperature flexibility down to –60 °C.
Outstanding compression set resistance for long-term sealing performance in dynamic applications.
Good adhesion to common substrates including metals, plastics, and painted surfaces without priming.
Thermally stable up to 200 °C continuous service, with short-term peak resistance to 250 °C.
Low volatility and minimal outgassing, suitable for high-purity and enclosed-environment applications.
Aerospace gaskets and vibration-damping mounts requiring extreme temperature resilience.
Automotive under-hood seals, sensor housings, and electric vehicle battery module interface pads.
Industrial fluid-handling systems including pump diaphragms and valve seat seals.
Medical device components where biocompatibility support and sterilization resistance are critical.
| Chemical Type | Heat-curable silicone elastomer blend (methylvinyl-based) |
| Product Form | Two-part liquid (Part A: polymer base; Part B: platinum catalyst) |
| Appearance | Pale amber, translucent liquid (Part A); colorless to pale yellow liquid (Part B) |
| Primary Applications | High-performance static and dynamic seals, encapsulation, and thermal interface materials |
| Key Features | Low compression set, wide service temperature range, primerless adhesion |
| Benefits | Extended service life, reduced assembly steps, compatibility with automated dispensing |
| Cure System | Platinum-catalyzed hydrosilylation (addition cure) |
| Shelf Life (unopened, 25 °C) | 12 months from manufacture date |
Q1: What is the primary function of DOWSIL EL-9080 in silicone elastomer formulations?
A: DOWSIL EL-9080 is a pre-compounded elastomer blend designed to enhance processability and improve mechanical consistency in high-consistency rubber (HCR) systems. It facilitates smoother mixing, reduces viscosity during processing, and supports uniform filler dispersion without compromising final cure properties.
Q2: Is DOWSIL EL-9080 compatible with platinum-cure and peroxide-cure silicone systems?
A: Yes — DOWSIL EL-9080 is formulated for broad compatibility with both platinum-catalyzed and peroxide-cured silicone elastomers. It does not interfere with catalytic activity or scorch safety in standard processing conditions, though optimal performance should be verified within the specific formulation and cure schedule.
Q3: How should DOWSIL EL-9080 be incorporated into a silicone compound?
A: It is typically added during the masterbatch stage—after base polymer and before fillers or curatives—to ensure homogeneous distribution. For best results, use standard two-roll mills or internal mixers at moderate temperatures; avoid prolonged high-shear exposure prior to final curing.
Q4: Does DOWSIL EL-9080 affect the thermal stability or compression set performance of cured elastomers?
A: When used as recommended, DOWSIL EL-9080 helps maintain baseline thermal resistance and contributes to improved long-term compression set behavior by promoting more uniform crosslink density and reducing internal stress concentrations in the cured network.
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