It is used to realize buffering energy absorption between battery
pack cells.
Refractory silicone rubber composite layer of ultra-high strength
stubborn fabric makes it have high mechanical strength;
It can maintain solid structural integrity at high temperatures or
flame, and has excellent electrical insulation;
Low smoke, low flame and low smoke toxicity during combustion;
- It can be processed to ultra-thin thicknesses and has excellent
flexibility.
Silicone foam insulation has emerged as a superior solution for
battery protection and thermal management systems in the rapidly
evolving field of new energy vehicles (NEVs). This article delves
into the inherent advantages of silicone foam insulation,
highlighting its unique capabilities and why it surpasses
traditional materials. By understanding its benefits, we can
explore its critical role in enhancing NEV battery performance,
safety, and longevity.
Excellent Resilience:
Silicone foam insulation boasts exceptional resilience, making it
an ideal choice for battery protection. Experimental data reveals
that even after undergoing 8,000 cycles of compression, the
material experiences minimal deformation, with less than 5% change.
This outstanding rebound property ensures long-term effectiveness
and reliability, safeguarding NEV batteries throughout their
operational lifespan.
Comprehensive Prtection:
Silicone foam insulation provides more than just insulation. It
offers additional advantages, including dustproofing,
waterproofing, heat dissipation, and shock absorption. These
properties are pivotal for NEV battery protection systems,
shielding the battery pack from external contaminants, preventing
moisture ingress, efficiently managing heat generated during
operation, and minimizing the impact of vibrations and shocks. Such
comprehensive protection contributes to the overall performance,
safety, and durability of NEV batteries.
Unyielding Performance under Extreme Conditions:
Silicone foam insulation undergoes rigorous testing to evaluate its
performance under harsh environmental conditions. Experimental data
from stress relaxation tests conducted at 85°C and 85% relative
humidity for 1,000 hours demonstrates that the material exhibits a
stress relaxation rate of only 20.98%. This exceptional result
attests to its ability to maintain mechanical integrity and provide
consistent performance, even in demanding situations. NEV batteries
can rely on silicone foam insulation to deliver unwavering
protection, regardless of challenging operating conditions.
Superior Compression Resistance:
Silicone foam insulation has excellent resistance to crushing and
retains its shape and performance even after extensive use. The
material exhibits a consistently low compression set, ranging from
0.34% to 0.72% in a 10,000-belt 1 million compression cycle test,
ensuring its long-lasting durability and effectiveness in
protecting new energy vehicle batteries.
These results highlight the material's resilience and ability to
maintain its shape and performance, even after prolonged use. NEV
batteries benefit from the long-lasting durability provided by
silicone foam insulation.
Minimal Water Absorption:
Silicone foam insulation exhibits an impressively low water
absorption rate of only 0.266%. This characteristic is crucial in
NEV battery protection, as it ensures the material remains stable
and unaffected by moisture. The low water absorption rate prevents
any adverse effects on the battery pack's performance, even in
humid environments. It further reinforces the material's
suitability for NEV applications.
As the NEV industry continues to advance, silicone foam insulation
emerges as the optimal choice for battery protection and thermal
management systems. Its exceptional resilience, comprehensive
protection features, unyielding performance under extreme
conditions, superior compression resistance, and minimal water
absorption set it apart from traditional materials. Silicone foam
insulation plays a pivotal role in enhancing NEV battery
performance, safety, and longevity. Its numerous advantages make it
a compelling solution that should be widely adopted in the NEV
industry, driving innovation and ensuring the continued success of
new energy vehicles.
The main performance parameters are shown in Table
| Serial number | Test items | Unit | Test Standard | SR No. |
| SR 35-A | SR 40-A | SR 50-A | SR 60-A |
| 1 | Hardness | Shore A | GB/T531.1-2008 | 35±7 | 40±10 | 50±10 | 60±10 |
| 2 | Density | g/cm3 | 4.3.2 | 0.8≤μ±3σ≤1.4 | 1.00≤μ±3σ≤1.51 | 1.00≤μ±3σ≤1.51 | 1.1≤μ±3σ≤1.5 |
| 3 | 25℃ Compression curve | MPa | GB/T 7757-2009 | 10%:0.12≤μ±3σ≤0.22 | 10%:0.25≤μ±3σ≤0.53 | 10%:0.25≤μ±3σ≤0.75 | 10%: 0.45≤μ±3σ≤0.80 |
| 20%:0.25≤μ±3σ≤0.45 | 20%:0.50≤μ±3σ≤0.86 | 20%:0.63≤μ±3σ≤1.77 | 20%: 0.95≤μ±3σ≤1.45 |
| 30%:0.45≤μ±3σ≤0.7 | 30%:0.68≤μ±3σ≤1.32 | 30%:1.20≤μ±3σ≤2.24 | 30%: 1.50≤μ±3σ≤2.50 |
| 4 | 25℃ Shear performance under pressure | | | Strength: µ-3σ≥0.8 | Shear strength under pressure: µ-3σ≥0.5 | Shear strength under pressure: µ-3σ≥0.2 | Shear strength under pressure: µ-3σ≥0.8 |
| Modulus: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 |
| 5 | 25℃ Tensile strength | MPa | GB/T 528-2009 | µ-3σ≥0.8 | µ-3σ≥1.1 | µ-3σ≥1.65 | / |
| 6 | -30℃ Compression curve | MPa | GB/T 7757-2009 | 10%:0.08≤μ±3σ≤.0.22 | 10%:0.25≤μ±3σ≤0.53 | 10%:0.35≤μ±3σ≤0.65 | 10%:0.55≤μ±3σ≤0.90 |
| 20%:0.25≤μ±3σ≤0.45 | 20%:0.50≤μ±3σ≤0.86 | 20%:0.90≤μ±3σ≤1.20 | 20%:1.10≤μ±3σ≤1.95 |
| 30%:0.45≤μ±3σ≤0.9 | 30%:0.68≤μ±3σ≤1.32 | 30%:1.50≤μ±3σ≤2.00 | 30%: 2.00≤μ±3σ≤3.95 |
| 7 | -30℃ Shear performance under pressure | | | Strength: µ-3σ≥0.8 | Shear strength under pressure: µ-3σ≥0.5 | Shear strength under pressure: µ-3σ≥0.2 | Shear strength under pressure: µ-3σ≥0.8 |
| Modulus: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 |
| 8 | -30℃ Tensile strength | MPa | GB/T 528-2009 | µ-3σ≥0.8 | µ-3σ≥1.1 | µ-3σ≥1.65 | / |
|
| 9 | 60℃ Compression curve | MPa | GB/T 7757-2009 | 10%:0.12≤μ±3σ≤0.22 | 10%:0.25≤μ±3σ≤0.53 | 10%:0.35≤μ±3σ≤0.70 | 10%: 0.35≤μ±3σ≤0.80 |
| 20%:0.25≤μ±3σ≤0.45 | 20%:0.50≤μ±3σ≤0.86 | 20%:0.80≤μ±3σ≤1.30 | 20%:0.65≤μ±3σ≤1.60 |
| 30%:0.45≤μ±3σ≤0.7 | 30%:0.68≤μ±3σ≤1.32 | 30%:1.00≤μ±3σ≤2.10 | 30%: 1.00≤μ±3σ≤2.50 |
| 10 | 60℃ Shear performance under pressure | | | Strength: µ-3σ≥0.8 | Shear strength under pressure: µ-3σ≥0.5 | Shear strength under pressure: µ-3σ≥0.2 | Shear strength under pressure: µ-3σ≥0.8 |
| Modulus: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 |
| 11 | 60℃ Tensile strength | MPa | GB/T 528-2009 | µ-3σ≥0.8 | µ-3σ≥1.1 | µ-3σ≥1.65 | / |
| 12 | Double 85 post-aging compression curve | MPa | GB/T 7757-2009 | 10%:0.12≤μ±3σ≤0.22 | 10%:0.25≤μ±3σ≤0.53 | 10%: 0.50≤μ±3σ≤0.70 | 10%: 0.40≤μ±3σ≤1.90 |
| 20%:0.25≤μ±3σ≤0.45 | 20%:0.50≤μ±3σ≤0.86 | 20%: 0.90≤μ±3σ≤1.30 | 20%: 1.00≤μ±3σ≤3.20 |
| 30%:0.45≤μ±3σ≤0.75 | 30%:0.68≤μ±3σ≤1.32 | 30%: 1.40≤μ±3σ≤2.10 | 30%: 1.70≤μ±3σ≤5.50 |
| 13 | Double 85 post-aging shear performance under pressure | | | Strength: µ-3σ≥0.8 | Shear strength under pressure: µ-3σ≥0.5 | Shear strength under pressure: µ-3σ≥0.2 | Shear strength under pressure: µ-3σ≥0.8 |
| Modulus: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 |
| 14 | Double 85 post-ageing Tensile strength | MPa | GB/T 528-2009 | µ-3σ≥0.8 | µ-3σ≥1.1 | µ-3σ≥1.65 | / |
| 15 | Compression curve after high and low-temperature cycle | MPa | GB/T 7757-2009 | 10%:0.12≤μ±3σ≤0.22 | 10%:0.25≤μ±3σ≤0.53 | 10%: 0.45≤μ±3σ≤0.65 | 10%: 0.50≤μ±3σ≤2.20 |
| 20%:0.25≤μ±3σ≤0.45 | 20%:0.50≤μ±3σ≤0.86 | 20%: 0.85≤μ±3σ≤1.35 | 20%: 1.00≤μ±3σ≤4.00 |
| 30%:0.45≤μ±3σ≤0.7 | 30%:0.68≤μ±3σ≤1.32 | 30%: 1.30≤μ±3σ≤2.50 | 30%: 1.80≤μ±3σ≤6.80 |
| 16 | Shear performance under pressure after high and low temperature | MPa | ASTM C273C /273M-16 | Strength: µ-3σ≥0.8 | Shear strength under pressure: µ-3σ≥0.5 | Shear strength under pressure: µ-3σ≥0.2 | Shear strength under pressure: µ-3σ≥0.8 |
| Modulus: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 | Shear modulus under pressure: Min≥0.75 |
| 17 | Tensile strength after high and low-temperature cycle | MPa | GB/T 528-2009 | µ-3σ≥0.8 | µ-3σ≥1.1 | µ-3σ≥1.65 | / |
| 18 | Flame retardant | / | UL94 | UL94 V0(2mm) | V0(t≥2mm) | V0(t≥2mm) | V0(t≥2mm) |
| V1(1≤t＜2mm) | V1(1≤t＜2mm) | V1(1≤t＜2mm) |
| HB(0.4≤t＜1mm) | HB(0.4≤t＜1mm) | HB(0.4≤t＜1mm) |
| 19 | Forbidden object | / | RoHS &REACH & ELV | RoHS &REACH & ELV | RoHS &REACH & ELV | RoHS &REACH & ELV | RoHS &REACH & ELV |
| 20 | Insulation | MΩ | 1000V DC 60s | µ-3σ≥500 | µ-3σ≥500 | µ-3σ≥500 | µ-3σ≥500 |
| 21 | Impedance | mA | 2700V DC 60s | µ+3σ≤1 | µ+3σ≤1 | µ+3σ≤1 | µ+3σ≤1 |
| 22 | Thermal conductivity | W/(m·K) | GB/T 10295-2008 | µ+3σ≤0.8 | µ+3σ≤0.8 | µ+3σ≤0.8 | µ+3σ≤0.8 |
| 23 | Specific heat capacity | J/(g·K) | ASTM E1269-2011 | µ-3σ≥0.9 | µ-3σ≥0.9 | µ-3σ≥0.9 | µ-3σ≥0.9 |
| 24 | Stress retention rate | % | GB/T1685-2008 | ≥40 | ≥40 | ≥40 | ≥40 |
| 25 | 25℃ Shear strength with double-sided adhesive | MPa | ASTM D1002 | Min≥0.8 | Min≥0.8 | Min≥1.1 | Min≥1.5 |
| 26 | -30℃ Shear strength with double-sided adhesive | MPa | ASTM D1002 | Min≥0.6 | Min≥0.8 | Min≥1.1 | Min≥1.5 |
| 27 | 60℃ Shear strength with double-sided adhesive | MPa | ASTM D1002 | Min≥0.6 | Min≥0.8 | Min≥0.6 | Min≥1.5 |
| 28 | Double 85 ageing shear strength with double-sided adhesive | MPa | ASTM D1002 | Min≥0.6 | Min≥0.8 | Min≥1.1 | Min≥1.5 |
| 29 | Shear strength after high and low-temperature cycles with
double-sided adhesive | MPa | ASTM D1002 | Min≥0.6 | Min≥0.8 | Min≥1.1 | Min≥1.5 |
|
Typical Applications
- Ev Battery Pack Structure is Fireproof and Insulated;
- Aerospace Cargo Fire Covers;
- A Protective Layer of the Brake Line of Railway Vehicles;
- Fire Barrier Between Railway Passenger Cars.
