I. Manufacturing Process of Antistatic Silicone Foam
The production process of antistatic silicone foam combines traditional silicone processing technology with modern antistatic technology, consisting of several key stages:
- Main Production Process Types
Calendering Process: The foam material is rolled into thin sheets using a calender, suitable for products requiring large-area and uniform thickness, ensuring material flatness and uniformity
Molding Process: Material is placed in molds for heating and pressure forming, allowing precise control of product shape and dimensions, suitable for complex shapes like seals and cushioning pads
Extrusion Process: Continuous production of strip-shaped products through extruders, then cut to required lengths, featuring high production efficiency and low cost
Injection Molding Process: Suitable for small, complex-shaped products like buttons and seals - Detailed Production Process
Mixing Treatment: Silicone rubber, foaming agents, antistatic agents, and colorants are mixed at high speed in a foaming machine to form a foaming compound
Standing Treatment: Allows the foaming agent to take effect, with air entering the silicone rubber to form a foamed compound
Centrifugal Treatment: Excess air is separated and discharged through a centrifuge, forming a molding compound
Shaping Treatment: The compound is poured into molds to form the desired shape
Pressurization Treatment: The shaped compound is pressurized to discharge excess air from pores, forming a high-density cured foam
Polishing Treatment: The outer surface is polished after demolding to complete production - Key Raw Material Composition
Base Materials: Vinyl silicone rubber (100 parts), hydroxyl silicone oil (5-10 parts)
Functional Additives: Photo-curable platinum catalyst (0.001-0.01 parts), hydrogen-containing crosslinker (1-10 parts)
Antistatic Components: Ionically conductive antistatic agents or antistatic liquids
Other Additives: Flame retardant fillers (40-50 parts), fillers (10-20 parts)
II. Core Performance Characteristics of Antistatic Silicone Foam
The unique combination of properties enables antistatic silicone foam to be used in multiple high-end fields:
- Physical Properties
Low Density: Foamed density as low as 0.16-0.20 g/cm³, achieving lightweight
High Resilience: Can quickly return to original shape after compression, suitable for repeated use
Smooth Surface: Easy to process and use, meeting complex shape requirements - Functional Properties
Excellent Antistatic: Surface resistivity ESD prevents electrostatic accumulation that could damage electronic components
Superior Flame Retardancy: With flame retardant additives, achieves UL94-V0 rating, withstands 800°C flames
Outstanding Sealing: Closed-cell structure provides IPX7 waterproof and dustproof capability
Wide Temperature Range: Operating temperature range of -40 to +200°C, some models up to 300-350°C - Environmental Adaptability
Weather Resistance: Resistant to ozone and UV rays, suitable for long-term outdoor use
Chemical Stability: Hydrophobic and moisture-resistant, maintains performance in harsh environments
Eco-Friendly: Non-toxic, passes RoHS and other environmental certifications
III. Typical Application Scenarios of Antistatic Silicone Foam
With these performance advantages, antistatic silicone foam plays an irreplaceable role in multiple high-tech fields:
- Electronics Industry
SMT Production Lines: Used in antistatic wrist straps and conveyor belts to prevent electrostatic damage to components
Electronic Device Packaging: As tray liners, providing shock absorption and antistatic protection
Communication Equipment: Provides dustproof, waterproof (IP protection), and electromagnetic shielding for precision components - New Energy Field
Power Battery Systems: As key battery pack materials, serving as cell interval heat-resistant, structural cushioning, and casing sealing
Energy Storage Equipment: Used for battery box sealing, withstanding 500°C high temperatures to form a hard insulating layer
Charging Facilities: As sealing material to ensure waterproof and dustproof performance of charging piles - Transportation Field
New Energy Vehicles: Applied in battery interval cushioning, heat insulation, and sealing
Rail Transit: Used for vehicle body sealing, interior damping, and equipment compartment insulation
Aerospace: As lightweight material for instrument cushioning, cabin sealing, and thermal insulation - Other Professional Fields
Building Sealing: Used for curtain wall joint sealing and thermal bridge breaking to improve energy efficiency
Medical Equipment: As cushioning material for precision instruments, meeting biocompatibility requirements
Military Equipment: Used for electronic equipment protection, meeting reliability requirements in extreme environments
IV. Industry Application Cases and Solutions - Electronics Manufacturing Solutions
ESD-Sensitive Device Packaging: Custom trays using 0.3mm thick antistatic silicone foam with surface resistance 10-10Ω to prevent ESD damage
SMT Line Auxiliary Materials: High-resilience (resilience >90%) antistatic conveyor belts to reduce electrostatic accumulation during component placement - New Energy Vehicle Innovations
Battery Module Interval Heat Solution: Uses ceramic silicone foam (TC series) to form an insulating barrier during thermal runaway, delaying thermal spread
Battery Pack Sealing System: Closed-cell foam achieves IP67 protection while providing vibration cushioning - High-End Electronic Device Protection
5G Base Station Sealing: Weather-resistant antistatic foam meets -40 to +85°C operating range for outdoor reliability
Wearable Device Cushioning: Ultra-thin (0.2mm) antistatic foam balances protection with device slimness
V. Future Trends and Challenges
With technological progress, antistatic silicone foam is developing in these directions:
Multifunctional Integration: Products combining antistatic, thermal conductive, and electromagnetic shielding properties
Environmental Upgrades: Using recyclable and bio-based materials to reduce environmental footprint
Process Optimization: Adopting UV curing and other new technologies to improve production efficiency and consistency
Cost Control: Reducing high-end application costs through mass production and material alternatives
As a high-performance functional material, the continuous innovation in manufacturing processes and expanding applications of antistatic silicone foam will continue to provide critical solutions for modern industry.
Depu Technology (Shenzhen) Co., Ltd. (hereinafter referred to as DP Silicone or dpsilicone) is a comprehensive service provider of organic silicone with a rich history of 15 years. We specialize in the production and distribution of various silicone products. For example, liquid silicone foam products and silicone rubber coil sheets. Our product thickness ranges from 0.1mm to 15mm, with a width of up to 4 meters. Every year, we provide over 500000 square meters of silicone materials/rolls/sheets to over 2000 satisfied customers worldwide.
