For organic silica gel, it is widely used in the power battery PACK link, and the silica gel foam interface sealed in the box is easy to loosen, deform, etc., resulting in water ingress into the box. Starting from strengthening the stickiness of the adhesive at the interface, it has become the choice of domestic silica gel enterprises to overcome this problem.

Organic silica gel is widely used in the power battery PACK link, either for heat conduction and heat dissipation, or for structural bonding, or for box sealing... Although the amount is small, it is indispensable, and plays a very good role in helping the power battery box and even the safety of the whole vehicle.   

We take "Tesla" as an example. The silicone product application scheme of its model model series is a case that many OEMs and silicone manufacturers in the industry compete to learn from. Behind the competition is the comprehensive reflection of the contradiction between the low entry threshold of silicone products in the new energy vehicle industry and the high difficulty of actual matching requirements.   

Take the case sealing as an example. Due to its good hydrophobicity, high and low temperature resistance, small compression deformation and other characteristics, silicone foam cotton is widely used in the case sealing of new energy vehicle battery packs. However, the specific surface area of silicone is small, and the adhesion of ordinary glue is weaker and weaker over time, When a new energy vehicle is operating in a complex actual working condition environment, affected by high and low temperatures, vibration and other factors, it is easy to lead to the collapse or even rotting of the interface after long-term compression, which will lead to water ingress into the box, ranging from scrapping of the battery pack to short circuit, fire and explosion of the battery pack, and ultimately affect the safe use of the whole vehicle.   

Therefore, what kind of adhesive or other processes should be used to strengthen the cohesiveness and sealing of the interface of silicone foam becomes a test of the technical strength of silicone enterprises.

Overcome the bonding problem of silicone foam interface

Combined with customer and market demand, through the continuous efforts of our rubber R&D personnel, the following arguments are combined:

    1. Excellent mechanical properties: large tensile strength and elongation at break, very suitable for bonding of silicone foam;   

    2. Aging resistance: after long-term aging test, the performance degradation rate is very small;   

    3. Low permanent compression deformation rate: good long-term use effect, no water seepage at the interface, good sealing effect, It can meet the life requirements of battery pack for long-term safe use;   

    4. Short curing time and high production efficiency;   

    5. Non toxic and harmless, meeting all environmental requirements including the quality system.  

Focus on power battery system sealing and thermal management

Here are the solutions:

1. Sealing buffer Foam has the lightness of foam and the same sealing property as traditional rubber sponge. At the same time, this material is not fragile and will not corrode metal. It is the main brand of box sealing and battery core buffering for mainstream electric vehicle manufacturers at home and abroad.  

2. Thermal conductivity Take thermal conductive gel as an example. Before curing, the product maintains good thixotropic fluidity, and can easily penetrate into gaps or holes through assembly methods such as dispensing/coating/printing. It is a good solution for fragile components or uneven assembly to link radiators.      

3. Thermal insulation and fire protection ，。 Aerogel felt is a combination of nano aerogel and inorganic fiber. Its thermal insulation effect is 2-5 times that of traditional thermal insulation materials, and its service life is longer; The thickness is only a fraction of that of traditional materials, but the same thermal insulation effect can be achieved; The material is hydrophobic as a whole, which can effectively prevent moisture from entering the pipeline and equipment, and has A1 grade fire resistance; Easy to construct and light in weight, easy to cut and sew to adapt to various shapes of pipes, thermal insulation materials and equipment, and less time and manpower required for installation; Less package volume and lighter weight can greatly reduce transportation costs.