The radiation heat dissipation sheet "PAL-350A" is a product made by coating an aluminum film with high thermal conductivity with a heat dissipation paint with high emissivity and processing it into tape.
In this article, we will take a detailed look at the features and uses of the radiation heat dissipation sheet "PAL-350A," which dissipates heat simply by sticking it on.
table of contents
・What is radiation?
・What is the radiation heat dissipation sheet "PAL-350A"?
・Features of the radiation heat dissipation sheet "PAL-350A"
・Product specifications, performance and structure of the radiation heat dissipation sheet "PAL-350A"
・How to use the radiation heat dissipation sheet "PAL-350A" and usage scenarios
・Heat dissipation effect
・summary
What is radiation?
The "radiation" in radiation heat dissipation sheet means: The phenomenon in which heat is transmitted through space by electromagnetic waves such as infrared rays emitted from the surface of an object. This refers to the following.
this is "Thermal conduction" is when heat is transferred directly between materials in contact with each other or "Convection" - Heat is carried by the flow of air or liquid is different from Methods of heat transfer It is one of them.
Transmitted even in a vacuum Because it has these characteristics and does not require air or contact, it can serve as a heat transfer path in unexpected places.
For example, if a heat-generating IC package is placed inside a sealed housing, it may cause heat build-up in adjacent components or on the inside walls of the housing. Radiant heat reaches directly If this "invisible heat" is not taken into consideration, it can lead to problems such as "not cooling as expected" and "lowered component reliability."
What is the radiation heat dissipation sheet "PAL-350A"?
The radiant heat dissipation sheet is a heat diffusion sheet that uses infrared conversion and can be attached as a heat dissipation component that we will manufacture and sell for the first time in 2024. The product is made of aluminum film with high thermal conductivity as the base material, coated with heat dissipation paint with high emissivity, and then coated with adhesive. Heat is diffused by radiant heat dissipation, which converts heat into electromagnetic wave (far infrared) energy. In addition, since the base material is aluminum film, it has a certain electromagnetic wave shielding effect and has a damping effect of about 50 dB at high frequencies (1 GHz to 6 GHz). In addition, since fluoroplastic is mixed into the heat dissipation paint with high emissivity, it is also Weatherability.
In recent years, many electronic devices have become more compact and sophisticated, and with the addition of AR and VR to high-speed, large-capacity communications, heat countermeasures for communications base stations and other equipment have become an increasingly important social issue. In order to contribute to this issue, we have developed a product that utilizes our many years of experience in fluoroplastic coating technology.
Features of the radiation heat dissipation sheet "PAL-350A"
1. By attaching it directly to a heating element, it can provide a heat diffusion effect through radiation heat dissipation.
2. With a total thickness of only about 110μm, it is thin and can reduce cooling space and weight.
3. Because it uses an aluminum film as the base material, it also provides electromagnetic wave shielding effect.
4. We can process the parts into specified shapes, and can tailor it to the object.
* KEC Measured by the method
*The above values are measured values and not standard values.
Radiation heat dissipation sheet "PAL-350A" product specifications, performance and structure
●Product Specifications
| Thickness (mm) | Standard width (mm) | Length (m) | |
|---|---|---|---|
| 0.11 | 480 | 1～45 | |
●Product performance
| Test items | PAL-350A | |
|---|---|---|
| Emissivity (ε) | 0.91 | |
| Maximum service temperature (℃) | 150 | |
Structure
How to use the radiation heat dissipation sheet "PAL-350A" and usage scenarios
All you need to do is peel off the white release paper and stick it on. We also believe that if we customize the separator to meet customer needs, it will be possible to use an existing automatic adsorption machine to peel off the separator and stick it on.
The intended use scenarios are heat-generating components such as industrial motors, control panels, heat source countermeasures in electrical boxes, and places where electromagnetic waves are undesirable. In control panels where heat sources such as inverter relays and power circuits are concentrated, in addition to coolers and fans, heat dissipation sheets are used to efficiently dissipate heat. By placing a radiant heat dissipation sheet on the inner wall of the housing or on top of the heat source components, it is possible to promote heat diffusion to the outside. Although the temperature varies depending on the type of electronic device, it is generally said that the upper limit of the operating temperature range is about 85°C even for heat-resistant specifications. Therefore, it is important to take appropriate heat dissipation measures from the design stage of the device, but electricity such as coolers and fans is used to cool electronic devices, which emits CO₂. By using our radiant heat dissipation sheet "PAL-350A" in combination with other heat dissipation materials, electricity consumption is reduced, which leads to reduced CO₂ emissions.
In addition, our heat radiation sheet can be used outdoors by taking advantage of Weatherability a characteristic of fluoroplastic, so it can be used anywhere.In addition, it can be cut or punched into specified shapes, so it can be delivered in a state that matches the object to which it will be attached.
*This image is for illustrative purposes only. The actual product may differ.
Heat dissipation effect
Our in-house testing has confirmed that the larger the size used, the greater the heat dissipation effect, and that this also results in a change in the temperature of the heating element.
1) When a 50mm x 50mm radiation heat dissipation sheet "PAL-350A" was applied to a 13mm x 13mm heating element, the heat dissipation effect was approximately 38℃. (Fig. 1, 2)
Test method: Treat the heating element as an IC chip and measure the temperature of the heating element after 10 minutes
FIG. 1
FIG2
2) The larger the size used, the greater the heat dissipation effect.
[Diagram 3]
Dimensions of the radiation heat dissipation sheet "PAL-350A" and temperature of the heating element after 10 minutes were measured.
| Dimensions of radiation heat dissipation sheet PAL-350A (mm) | Heating element temperature (℃) |
|---|---|
| No seat | 99.3(－) |
| 14×14 | 98.2(-1.1) |
| 20×20 | 86.4(-12.9) |
| 25×25 | 80.0(-19.3) |
| 30×30 | 73.4(-25.9) |
| 40×40 | 65.4(-33.9) |
| 50×50 | 61.2(-38.1) |
*These are measured values and not standard values.
Summary
The radiation heat dissipation sheet "PAL-350A" is an adhesive sheet for high temperature and heat control measures. It is a product that can be cut into specified shapes according to customer requests.
If you are interested, please feel free to contact us.
輻射放熱シート「PAL-350A」の詳細は下記をご覧ください。
https://www.chukoh.com/products/tape/pal350a/
