English 
I. Advantages of core products
1. Excellent insulation performance
The surface resistivity is generally ≥10¹4Ω·cm, and the breakdown voltage is ≥20kV/mm, which can effectively isolate the high-voltage signals of electronic components (such as MOS tubes, transformers, circuit boards), eliminate the risk of short circuit and leakage, and adapt to medium and low-voltage electronic equipment scenarios below 10kV.
2. Stable operation in a wide temperature range
The tolerance temperature range is -50℃~200℃ (special formula can reach -60℃~250℃), the insulation performance change rate after high and low temperature cycle is ≤5%, and there is no brittleness and softening phenomenon. It is suitable for outdoor equipment, automotive electronics and other extreme temperature environments.
3. Flexible sealing and cushioning
The Shao hardness is adjustable from 30 to 80A, with excellent elastic resilience (compression permanent deformation ≤15%), which can closely fit the surface of shaped components, while absorbing the vibration of the equipment (such as motors and fans), and protecting fragile components such as chips and wires.
4. Resistant to environmental erosion
Anti-ageing, moisture and heat resistance (insulation resistance retention rate ≥90% in a 95% humidity environment), and no swelling reaction to oil stains, weak acids and alkalis common in electronic devices, prolonging the service life of the equipment.
5. Lightweighting and thinning
The thickness can be customised to 0.1~10mm, and the ultra-thin (0.1~0.3mm) is suitable for mobile phones, wearable devices and other miniaturised electronics. The weight is only 60% of the traditional insulating rubber, which does not increase the burden on the equipment.
II. Differentiated product characteristics
1. "Insulation + thermal conduction" integration
The special formula adds thermally conductive fillers such as aluminum oxide and boron nitride, which can achieve a thermal conductivity of 3.0~6.0W/m·K, while maintaining insulation voltage resistance ≥6000V, and solving the dual requirements of "heat dissipation + insulation" of CPU, LED lamp beads and other components.
2. High-precision customisation ability
It supports laser cutting and moulding, and the size tolerance is controlled within ±0.05mm. It can process special-shaped structures such as holes, grooves, wavy edges, etc., and adapts to the complex installation space of precision electronic modules (such as battery packs and RF modules).
3. Convenient installation design
It can be compounded single-sided/double-sided self-adhesive glue (such as 3M glue), with adhesive strength ≥0.5N/cm, which can be quickly fixed without additional fasteners, reducing the assembly process; some products have positioning holes, which is convenient for accurate installation of automated production lines.
4. Flame retardant and environmental protection compliance
The mainstream products have passed the UL94 V-0 flame retardant certification, with no dripping and low smoke when burning; they meet RoHS, REACH, FDA and other standards, and do not contain lead, mercury and other heavy metals, and are suitable for the environmental protection requirements of medical electronics and consumer electronics.
5. Long-term performance is stable
Using platinum vulcanisation process, the cross-linking density of silicone is higher, and there is no migration of small molecule silicone oil (volatile weight ≤1%), avoiding contamination of circuit boards, lenses and other sensitive parts, and the service life can reach 5 to 10 years.
III. Summary of core values
The core competitiveness of electronic insulated silicone sheets lies in ** "multi-performance integration + precise adaptation to the scene"** - not only to meet the safety bottom line of electronic equipment with high insulation, but also to solve the problem of traditional insulating materials (such as plastics, ceramics) "rigid and vulnerable, The pain point of "poor adaptability" is the key supporting material for the development of miniaturisation and high reliability of electronic devices.
FAQ:
The following are the frequently asked questions and targeted answers of electronic insulated silicone sheet products, covering core scenarios such as performance, selection and use, and helping efficient application:
I. Performance indicators and core characteristics
Q1: How to determine the insulation performance of electronic insulated silicone sheets?
The core indicators are surface resistivity (≥10¹²Ω·cm is the insulation level, and high-end products can reach 10¹4-10¹6Ω·cm) and breakdown voltage (ordinary products ≥20kV/mm, special models for high-voltage scenarios ≥30kV/mm), which need to be passed GB/T 1410-2006 (body Accumulated resistivity), GB/T 1408.1-2021 (demageout voltage) standard test.
Q2: Can the temperature-resistant range meet the needs of electronic equipment?
The temperature resistance of ordinary electronic insulated silicone sheets is **-40℃~200℃**, and the high-temperature resistance formula (with the addition of phenyl or ceramic filler) can be expanded to -60℃~250℃. In the short term (within 30 minutes), it can withstand a peak temperature of 300℃ and adapt to the long-term use of heating components such as CPU, motors and new energy batteries. Use.
Q3: Can thermal conduction and insulation be balanced at the same time?
OK. Thermally conductive insulating silicone sheets achieve a thermal conductivity of 0.8-6.0W/(m·K) by filling with thermally conductive fillers such as aluminum oxide and boron nitride, while maintaining the insulation performance (deathering voltage ≥15kV/mm). It is mainly used for the dual requirements of "thermal conductivity + insulation" between the chip and the radiator, such as LED driving power supply. , server motherboard.
II. Selection and customisation
Q4: How to choose the appropriate thickness according to the scene?
• Ultra-thin (0.1-0.5mm): suitable for precision electronic components (such as mobile phone FPC wiring, micro sensors), taking into account insulation and space compactness;
• Regular model (0.8-3mm): general scenarios (such as circuit board isolation, transformer gasket), balancing insulation and mechanical strength;
• Thickened (5-10mm): high-voltage equipment (such as switch cabinets, inverters) to improve breakdown voltage and impact resistance.
Q5: How to choose hardness (Shore A)?
• Low hardness (30-50A): used for irregular surface filling (such as battery module gaps), good fit;
• Medium hardness (60-70A): general insulation (such as motor end cover sealing), strong deformation resistance;
• High hardness (80-90A): scenes with high mechanical stress (such as machine tool electrical cabinet), wear resistance, compression resistance.
Q6: How to distinguish between ordinary silicone and flame-retardant silicone?
• Ordinary silicone: non-flame retardant, suitable for scenarios with low safety requirements (such as internal insulation of small household appliances);
• Flame-retardant silicone: passed UL94 V-0 certification, no dripping during combustion, self-extinguishing time ≤10 seconds, used in new energy vehicles, medical equipment, aerospace and other high-risk scenarios.
III. Installation and use
Q7: What preparations need to be made before installation?
1. Clean the surface: wipe the installation surface with alcohol or dust-free cloth to remove oil and dust to avoid affecting insulation and fit;
2. Film tearing operation: The protective film needs to be torn off one side by side to avoid the direct contact of the glue layer by the fingers, which leads to the decline of stickiness;
3. Positioning and fixing: After aligning the mounting hole or edge, press evenly for more than 30 seconds to ensure that there are no bubbles (bubbles will reduce the breakdown voltage).
Q8: Can it be used in dynamic friction scenarios?
Not recommended. The electronic insulating silicone sheet is designed for static insulation. Long-term dynamic friction (such as rotating shaft sealing) will cause surface wear and insulation damage. Wear-resistant silicone (add polytrafluoroethylene filler) or fluororubber products should be selected in such scenarios.
IV. Maintenance and failure handling
Q9: How to judge whether the silicone sheet is ageing?
It needs to be replaced in the following situations:
• Appearance: brittleness, cracking, yellowing, or surface precipitation of sticky substances (silicone oil migration);
• Performance: Use a mualtimeter to detect the surface resistivity <10¹²Ω·cm, or leakage or breakdown.
Q10: What are the reasons for ageing or failure?
• High temperature: long-term exceeding 200℃ accelerates oxidation degradation;
• Environment: moisture, acid and alkali corrosion (such as chemical workshops) cause insulation to decrease;
• Mechanical stress: long-term compression or vibration causes structural fatigue.
Q11: How to maintain it on a daily basis?
• Clean the surface dust regularly (every 3-6 months) (use a dry brush or vacuum cleaner, avoid washing with water);
• Avoid direct sunlight and high temperatures (storage temperature ≤25℃, humidity 40%-60%);
• It is forbidden to come into contact with strong acids, strong alkalis and organic solvents (such as acetone and gasoline) to prevent corrosion.
V. Certification and Compliance
Q12: What are the commonly used industry certifications?
• Insulation certification: UL 94 (flame retardant), VDE 0303 (high-voltage insulation);
• Environmental protection certification: RoHS 2.0 (restriction of heavy metals), REACH (EU chemical control);
• Special certification: FDA 21 CFR 177.2600 (food contact equipment), ISO 10993 (biocompatibility of medical equipment).
Q13: Are there any special requirements in the medical/automotive field?
• Medical field: need to pass ISO 10993 certification, and it is a sulphur-free sulphurisation process (to avoid irritating the human body);
• Automotive field: need to pass IATF 16949 certification, temperature resistance ≥150℃, oil resistance (adapt to engine compartment oil and liquid environment).
