New energy flame-retardant silicone frame with aging resistance provides reliable protection for batteries and ensures driving safety

I. Raw Material Description

The sealing silicone strip adopts 40° flame-retardant silicone as the core raw material. It is a highly elastic eco-friendly silicone material with moderate hardness and excellent toughness, balancing soft conformability and structural stability. It resists deformation, cracking and aging.

This material boasts outstanding resistance to high and low temperatures. It maintains stable physical properties under extreme temperature differences: it will not harden or crack at low temperatures, nor soften or deform at high temperatures, making it suitable for a wide range of complex working conditions.

In addition, the raw material features excellent waterproof, dustproof, insulating and flame-retardant properties, with prominent sealing and cushioning shock absorption performance. It is non-toxic, odorless, eco-friendly and durable. With resistance to ultraviolet radiation, aging and corrosion, it can withstand long-term external wear including wind, rain, moisture, oxidation and mild friction, greatly extending the service life of products.

II. Raw Material Performance Parameters

III. Production Process

The product is precisely manufactured by compression molding using an industrial vulcanizer, which represents a core high-precision production process for silicone products.

During production, proportioned 40° flame-retardant silicone raw material is loaded into professional vulcanizing molds. The material undergoes high-temperature and high-pressure vulcanization molding inside the vulcanizer to enable sufficient crosslinking and curing of silicone molecules.

This process delivers prominent advantages. It ensures uniform overall density, compact texture, precise dimensions and neat profile of finished products, free of air bubbles, defects and deformation. It thoroughly avoids common drawbacks of traditional extrusion processes such as uneven thickness, poor sealing performance and insufficient elasticity. After vulcanization molding, the silicone frame achieves greatly improved elasticity, toughness, sealing property and structural stability, with more consistent physical performance.

After molding, refined procedures including trimming, grinding and quality inspection are carried out to remove burrs and impurities, ensuring smooth and flat product surfaces.

IV. Product Application Scenarios

Silicone Frame for Battery Modules / Module Enclosure Frame

Outer isolation frame and positioning frame for cell modules; separates adjacent modules and provides high-voltage insulation barrier. It slows flame spread during cell thermal runaway (UL94 V-0 self-extinguishing upon removal of flame); cushions vehicle bump vibration and absorbs thermal expansion & contraction stress.

Silicone Sealing Frame for Battery Pack Upper Cover / Housing

Full-frame sealing at the mold-closing surface of battery pack housing, achieving IP67/IP68 waterproof and dustproof performance. It prevents ingress of rainwater, muddy water and condensed moisture to avoid short circuits of high-voltage circuits.

Insulation Sealing Frame for BMS (Battery Management System) Board

Provides insulation isolation for the edge of internal control boards inside battery packs, preventing electric leakage and tracking between metal housing and circuit boards.

Perimeter Sealing of Water Cooling Plates & Thermal Insulation Cushion Frame for Modules

Eliminates risk of cooling liquid leakage, blocks heat transfer between modules and balances temperature inside the battery pack.