Transparent Anti-Static PC Sheet ESD PC Sheet

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Product details

Transparent Anti-Static PC Sheet ESD PC Sheet

Anti-static PC sheet (antistatic polycarbonate sheet) is a functional engineering plastic sheet based on polycarbonate (PC) resin, modified by adding a permanent antistatic agent or a surface conductive coating. PC resin itself is an amorphous thermoplastic polymer synthesized through the polycondensation reaction of bisphenol A and diphenyl carbonate. It has excellent transparency, high impact strength, and heat resistance. However, the surface resistivity of ordinary PC material is as high as 10¹⁴-10¹⁶ Ω (for insulators). It is prone to static electricity accumulation (voltages can reach thousands to tens of thousands of volts) due to friction and contact separation. This can lead to dust absorption, damage to electronic components, and explosion risk (for example, in dusty environments).

Antistatic PC sheets achieve static dissipation through two main technologies:

Permanent antistatic agent modification: Conductive fillers such as carbon nanotubes, conductive carbon black, and surfactant-type antistatic agents (such as quaternary ammonium salts) are uniformly dispersed throughout the PC raw material (typically at a dosage of 3%-8%). This creates an internal conductive network, reducing the surface resistivity to 10⁶-10⁹Ω (compliant with ANSI/ESD S20.20 antistatic standards), allowing static charges to be dissipated to the ground within seconds.

Surface conductive coating: A nanoscale conductive coating (such as ITO conductive film or carbon-based coating) is applied to the surface of ordinary PC sheets. This physically creates a low-resistance layer (resistivity 10⁶-10⁹Ω), but the coating's durability is relatively low (it may wear out with long-term friction). Our mainstream products are primarily permanent antistatic modified PC sheets (for more stable performance). These sheets feature a smooth surface (haze <2%, light transmittance >85%), uniform color (transparent is common), a density of 1.20-1.22 g/cm³, thicknesses ranging from 15mm to 600mm, and widths of 1000mm or 2000mm, with custom lengths available. Based on application scenarios, these sheets are categorized into transparent antistatic grades (for electronic optics), wear-resistant antistatic grades (for industrial protection), weather-resistant antistatic grades (for outdoor equipment), and food-grade antistatic grades (FDA-compliant). These sheets are widely used in electronics manufacturing, semiconductors, medical equipment, laboratories, and industrial protection.

antistatic pc sheet

Product Performance

Antistatic Performance

Surface Resistivity: 10⁶-10⁹ Ω (permanent antistatic modification, compliant with ANSI/ESD S20.20 and IEC 61340 standards). While ordinary PC sheets are insulators (10¹⁴-10¹⁶ Ω), antistatic PC sheets quickly dissipate static charges (charge decay time <2 seconds).

Electrostatic Voltage Suppression: Surface electrostatic voltage after friction is <100V (compared to >1000V for ordinary PC sheets), effectively preventing dust absorption (such as in cleanrooms) or damage to sensitive electronic components (such as chips and circuit boards).

Mechanical Properties

Ultra-High Impact Resistance: Charpy unnotched impact strength ≥600J/m (200 times that of ordinary glass and 5-10 times that of acrylic), and Izod notched impact strength ≥80kJ/m². It can withstand severe impacts (such as equipment drops and collisions) without cracking. Medium Rigidity: Flexural strength of 80-120 MPa, elastic modulus of 2000-2400 MPa (2-3 times higher than ordinary plastics), suitable for medium-load support structures.

Fatigue Resistance: Lifespan under cyclic loading (such as repeated bending) > 1×10⁶ cycles (3-5 times higher than acrylic), suitable for dynamic use scenarios.

Optical Performance

High Transparency: Light transmittance ≥ 85% (transparent level, close to 90% of glass), haze ≤ 2% (smooth surface, no scattering), suitable for optical instruments and transparent protective covers.

Low Birefringence: Minimal optical distortion (suitable for precision optical components, such as lens protectors).

ESD PC board

Thermal Properties

Good heat resistance: Heat deflection temperature (under 1.82 MPa load) 125-135°C, long-term operating temperature range -40°C to +120°C (short-term resistance 140°C), melting point approximately 220-230°C (processing temperature must be controlled below 300°C to avoid decomposition).

Low thermal expansion coefficient: approximately 6.5×10⁻⁵/°C (30%-40% lower than aluminum), with high dimensional stability under temperature fluctuations (e.g., precision instrument components).

Chemical Properties

Moderate chemical resistance: Stable to weak acids (e.g., carbonic acid, citric acid), weak bases (e.g., soapy water), and some organic solvents (e.g., ethanol, acetone) (no significant swelling at concentrations below 30%). However, it is susceptible to corrosion by strong acids (e.g., concentrated sulfuric acid, concentrated nitric acid), strong bases (e.g., sodium hydroxide >10%), and halogenated hydrocarbons (e.g., carbon tetrachloride) (long-term contact should be avoided).

Processability

Easy to process: esd pc sheets can be formed through extrusion (sheet thickness tolerance ±0.2mm), thermoforming (temperature 180-220°C), stamping (suitable for complex shapes), and machining (turning, drilling), making it suitable for mass production. Waste is 100% recyclable (shredded and directly reused for extrusion).

Welding Compatibility: It supports hot air welding and ultrasonic welding (temperature control must be <280°C), with weld strength reaching 80%-90% of the parent material (under standard operation).