In modern electronics, thermal management materials must deliver not only high conductivity but also exceptional mechanical stability. Many thermal failures occur not because of a drop in thermal conductivity, but due to Compression Set under long-term thermal pressure, leading to micro-gaps at the interface. Understanding the viscoelastic nature of Thermal Silicone is vital for ensuring decadal product lifespans.
Chemical Principle: Thermal Agitation and Stress Relaxation Thermal silicone pads, as elastomers, possess both solid-like elasticity and liquid-like viscosity:
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Cross-linked Network: The durability of a Silicone pad depends on the cross-link density of its Polysiloxane chains. Lixing utilizes precise addition-curing to form a robust 3D network that resists permanent chain displacement even at high temperatures.
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Compression Set: When compressed, molecular chains undergo rearrangement (stress relaxation). If the chemical stability is insufficient, secondary cross-linking can occur in the deformed state, preventing the material from rebounding. This causes Interfacial Thermal Resistance to grow exponentially over time.
Industrial Application: Durability in 5G Base Stations and EV Battery Packs For high-reliability requirements, Lixing Composite Material provides solutions with minimal deformation rates:
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Telecom Infrastructure: In 5G outdoor base stations, where thermal cycling is extreme, Lixing’s Thermal Silicone Pads feature superior elastic memory, maintaining consistent contact force after thousands of cycles.
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Power Electronics: For modules requiring sustained bolting pressure, our reinforced Thermal Silicone Cloth effectively suppresses “Cold Flow,” ensuring that the electrical insulation layer remains thick enough to prevent dielectric breakdown.
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