A Two-component Silicone and Polyurethane gap filler for every need

SEPNA thermally conductive liquid gap fillers are highly flexible solutions for consistent thermal conductivity, high insulation, and effective electrical isolation.

Chemically tunable gap fillers can be specified to highlight every important characteristic you need.

Designed for EV and energy storage battery applications
 

• Thixotropic fluid ensures complete module coverage, prevents excessive stress in finished parts, and avoids air entrapment and the associated re-work
• Colored material allows for an immediate quality check during mixing
• These chemically tunable liquid gap fillers are available with semi-structural strength, or for low or no adhesion so they can be peeled off for easy reworkability

The model SS268 is a Two-component paste silicone gap filler, mixed 1:1 by mass and cured to a high-performance elastomer that molds to the structure's shape, providing the best structural suitability and surface fit of structural components. It meets the needs of low stress and high compression modulus and can be automated. Low contact thermal resistance and high electrical insulation when assembled with electronic products. Healthy and environmentally friendly, RoHS compliant.

Efficiency in automation
 

• With a mixing ratio of 1:1, these thermally conductive liquid gap fillers make for a robust process that uses the same interchangeable machine parts for all equipment

 

• They apply at room temperature with no pre-heating of equipment and tubes for reduced time and energy expenses

 

• SEPNA thermally conductive gap fillers support fully automated dispensing with high throughput

 

• Form-in-place curing eliminates processing and die-cutting and accommodates large and exacting tolerance stack requirements

Enabling supply chain flexibility
 

• SEPNA Two-component (2K) material (polyurethane and silicone)can be transported without refrigeration and delivers a long shelf life

 

• It is mixed at the point of application, which helps reduce waste and eliminates the need to circulate each part before use

 

• Instead of multiple products, order one solution to meet a wide range of specifications

SEPNA thermally conductive liquid gap fillers silicone gel for energy storage battery module PACK box between the cooling plate

Different thermal conductivity can be customized

( Thermal conductivity :( 0.3-3.0 W/m.k )

 

0.3 W/m.k For SP280.SP281.SP282.SP283

1.2 W/m.k For SP284.SP286.SP261

1.5 W/m.k For SP263.SP287

2.0 W/m.k For SP265.SP268.SP285

3.0 W/m.k For SS269
 

Two-component thermally conductive silicone gap filler


The bonding strength has high, medium, and low strength and is Removable (when the future battery pack is bad after replacing the new battery).


Excellent aging resistance and chemical resistance

Light-weight

Total vehicle weight is tied inextricably to the range of electric vehicles.
The battery pack is a major contributor, typically weighing between 600 and 700 kilograms for the average battery electric vehicle (BEV).

Smart lightweight designs can counterbalance part of this, and Sepna's engineering expertise and partnership with RLE International are fundamental for optimizing aluminum structures per crash standards and passenger safety.

  

Specification of Part-A (resin)
Items	Standard	Specification	Typical value
Colour	Visual	Blue	Blue
Viscosity (mPa.s) (Brookfield, 7# 10rpm)	GB/T 2794	120000-200000	120000
Density (g/cm3)	GB/T 13354	1.9 ± 0.1	1.93

 

Specification of Part-B (hardener)
Items	Standard	Specification	Typical value
Colour	Visual	Yellow	Yellow
Viscosity (mPa.s) (Brookfield, 7# 10rpm)	GB/T 2794	120000-20000	125000
Density (g/cm3)	GB/T 13354	1.90 ± 0.1	1.93

 

Specification after mixture
Items	Standard	Specification	Typical value
Mixing ratio	Volume ratio	A: B=1:1	/
Colour	Visual	Green	Green
Viscosity (mPa.s) (Brookfield, 7# 10rpm)	GB/T 2794	120000-20000	122500
Density (g/cm3)	GB/T 13354	1.9 ± 0.1	1.93
Pot life (min)	/	40 - 60 (adjustable)	60

Specification after cured
Items	Standard	Specification	Typical value
Hardness (Shore A)	GB/T 531	60 ± 10	60
Tensile strength (MPa)	GB/T 528	≥0.15	0.153
Elongation (%)	GB/T 528	≥50	55
Dielectric constant @100kHz	GB/T 1409	≤ 7.0	7
Breakdown voltage KV/mm	GB/T 1408.1	≥10	10
Thermally conductivity (W/m.k)	ASTM D 5470	2.0 ± 0.1	2.05
Flame retardant (UL-94)	ANSI/UL-94	V-0	V-0
Service temperature (ºC)	/	-40 ~ +80	/
Note: The above typical values were all detected at 25 ºC;

 

The product can be cured with heating, the curing time under different temperatures refer to the following table (non-specified value)
Curing temperature	25ºC	80ºC	100ºC
Curing time	480min	30min	20min

 


 

SEPNA focuses on the R&D and production of advanced new materials. Headquartered in Shanghai, the factory is located in Qidong High-tech Zone, Jiangsu Province. It is a modern technology factory with an area of 20000 square meters.

SEPNA factory uses an advanced MES automatic quality control system and a full-process ERP management system for strict quality control. 

SEPNA factory and products have passed many international system certifications. Such as ISO9001-2015, SGS, 16949, and other certificates.

SEPNA adheres to the values of being "customer-centric, take technology as the blood, and focus on high-quality", adheres to the development concept of "DEVELOP DEPEND ON THE TECHNICAL INNOVATION, LIVE DEPEND ON THE QUALITY,"; Focus on providing customers with more accurate and safe products with "bonding, sealing and protection" functions.

SEPNA product lines, from flexible sealing, and fixed bonding to the development of multiple curing forms products, can fully match the production and manufacturing processes of different customers, and SEPNA can provide all customers with more options, higher efficiency, and better quality product solutions, as well as omnidirectional customized services and support.

SEPNA closely connects customers/suppliers/employees/partners with the mission of "Zero SL Bonds Us Together! ". 
And continues to promote technology and product innovation, service innovation, and talent innovation, better combine the value of products, services, and talents to make products more perfect, make industrial manufacturing more efficient, and provide more valuable products and service solutions for the high-end and high-end manufacturing industry!

2. OEM / ODM AVAILABLE (Professional design team providing package design solutions for OEM / ODM customers free of charge.
3. Free Samples.
4. Imported Raw Materials and Test Equipment.







5. Strict quality control (We have passed GB/T 19001-2016, IS09001:2015, and IATF 16949:2016 quality system authentication, and we can provide ROHS/SGS/ MSDS certification of products).
6. Deliver in 7-15 Days after payment.
7. Excellent QC Team and R&D Team.


8. Provide professional application technology solutions.
9. Complete the after-sales service system.
10. Partners with Top 500 Global Companies.

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