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What does heat-resistance mean in the adhesion?
In recent years, heat-resistance in materials and adhesion technology have become very important in the adoption of electric mobility, which is garnering growing interest. These include heat dissipation in electronic systems, efficiency improvements in air conditioners, and fast-charging of lithium-ion batteries.
When discussing “heat-resistance,” it is important to consider it from three-axes: “temperature” x “time” x “functions and attributes" of the environment.
What are the three axes of "heat-resistance?"
In terms of the first axis,“temperature,” it is necessary to determine the lowest and highest temperatures applied in the specific usage. The lowest attainable temperature, known as “absolute zero” is approximately -273°C. On the other end of the spectrum, the highest temperature ever recoded during an experiment on Earth, which occurred in 2012, reached a staggering 5.5 trillion °C (!). Even the hottest region f the sun reaches temperature of approximately 16 million °C, making it an incredibly high temperature.
The temperature range spans an immense spectrum on a cosmic scale, but within the typical manufacturing processes and applications, it generally falls between -30°C to 300°C. To begin, it is essential to establish the minimum and maximum temperature requirements for your specific application.
The second axis,“time,” can be broadly categorized into short-term (-2 hours) and long-term (-10 years) intervals. An instance of a short-term adhesion application could be: intense heat is employed during a specific phase of the manufacturing process, and then no adhesive residue is anticipated to remain on the product after peeling or removal. And, in the long term, there are applications such as fixing components to parts that heat over time such as engine parts and heater parts, and protecting surrounding parts. On the other and, long-term adhesion applications might involve affixing components to parts that experience prolonged exposure to heat, such as engine and heater components, while safeguarding adjacent parts.
Although you may be searching for a heat resistant product, and it states to endure temperatures up to a certain degree, it‘s important to note that higher temperature does not always guarantee the superior heat-resistance. In the short-term, it can withstand temperatures up to 200℃, but over the long-term, its heat-resistance may be limited to 100℃. This can vary significantly depending on the time frame considered. Understanding the appropriate time frame for your application is the second axis in finding a more suitable solution.
Regarding the third axis,“functions and attributes,” the material possesses distinctive functions and attributes such as "insulation," "oil resistance," "plasticity resistance," and "ease of removable." For instance, if you intend to utilize the material for battery peripheral components and wish to prevent any electrical interference with those components, insulation becomes essential…; if you affix soft PVC, but you anticipate it could peel off with time, then "plasticity resistance" becomes a necessary attribute....; or if your intention is product recycling, easy separation may be the optimal approach as this enhances the purity of the material. It would be helpful to identify the essential functions and attributes, including those required for usage and those aligned with product lifecycle sustainability, when seeking suitable materials.
Explore more of the details
Sekisui has developed the SELFA - high adhesion easy removable UV tape - . We also offer a range of tapes featuring heat-resistant properties suitable for use in reflow processes.
Additionally, if you intend to use the tape to an environment with sustained high-temperature conditions, we recommend considering our newly released Heat-resistant tape 5505HR & 5503HT introduced in 2023 which offers distinctive features like a thin film and enhanced surface texture.
HPPC TECHs Blog
Sekisui Mobility Solution - Design/Comfort -
The SEKISUI CHEMICAL Group provides materials that contribute to improving the design and comfort of upcoming vehicles, especially the bonding, heat dissipation, and molding technologies we have developed over time.
2023-05-31
