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Motor Iron Slot insulation. Switchgear, Network Connector, and Busbar coating powder. Thermistors, Varistors, and Resistors. What do they all have in common? They are all applications that use epoxy coating powder for insulation and protection.
Epoxy coating powder has been around since the 1950’s. Hysol (which stands for epoxy with high-solid content) introduced epoxy coating powder to the world with DK18-05. It was a plastic composite with world class adhesion, toughness, strength and insulation, and the market for it grew and grew.
Since then DK18-05 has been copied, adapted, and further developed by a multitude of competitors. Since the 1950’s the variety of epoxy coating powders that are available is mind-blowing. Each developed and perfected for a particular application in mind.
All epoxy powder coatings are applied electrostatically to metal parts usually in a fluidized bed or with a blow gun. A fluidized bed is better for high quantities and larger components. Electrostatic spray guns are better for lower quantities of perhaps more complicated components.
In both cases the powder is given an electrostatic charge which makes it cling to earthed components which have an opposite charge. A little like how a balloon will stick to wool. This process ensures a uniform evenly applied layer: eliminating over or under coating and unnecessary texture. The part is then heated in a kiln, oven, or induction heater where the powder coating melts and finally cures.
The cure time, hot plate gel time, and glass temperature, as well as its final cured characteristics depend on the type of epoxy resin, hardener, fillers, and additives used to create that particular epoxy coating powder.
Important characteristics to bear in mind when selecting a coating is powder are thermal conductivity, how thin or thick it can be applied, as well as how compatible it is with your equipment, and finally the regulations of the countries where it will be made and used in the end product.
If we take DK18-05 as an example we can see why it’s been one of the most successful epoxy coating powders. What made it so popular? DK18-05 is perfect for tantalum capacitors that need a low cure temperature. It’s also extremely thermal shock resistant: surviving thermal cycles of -125C to +125C. This makes it highly relevant for ceramic capacitors. It also comes in a great set of colors: blue, gold, green, and black.
But the world is a changing place and the golden days of DK18-05 are over. It’s no longer acceptable to use Halogens, which Dk18-05 is full of. Recently the EU added TMA to its list of Substances of Very High Concern (SVHC): making DK18-05 and its many copies no longer suitable for the European Market.
There is also a new trend in Tantalum capacitors to use polymer capacitors. Polymer capacitors need even lower cure temperatures that DK18-05 can provide, making it now irrelevant. Ceramic capacitors are getting bigger and DK18-05 is too brittle to meet the specifications for these larger Class 1 ceramic capacitors.
So if your searching for a new generation epoxy coating powder that is ready for the requirements of today CAPLINQ is here help. Whether you’re concerned about Pick-up temperature or Glass transition temperature CAPLINQ can help inform and guide you. At CAPLINQ we have to expertise to guide you in your epoxy coating powder product choice, adjust formulations to suit you, or create altogether completely new custom epoxy coating powder formulation together with you.
For many years CAPLINQ has supplied a range of epoxy coating powders developed for medium voltage (600V – 38,000V) bus bar and switch gear applications. CAPLINQ is one of the few epoxy coating powder manufacturers with "switch panel-rated" material, meaning that their epoxy coating powders are qualified for use in Power Distribution Switch Boards. Given the critical nature of the application, the time and costs involved to pass UL-certification, major Power Management Companies reply on CAPLINQ and their family of UL-listed epoxy coating powders. All the products offered by CAPLINQ for busbar applications are UL-listed.
CAPLINQ supplies a range of epoxy coating powders developed for motor iron armatures. From incredible bed life epoxy powders to high productivity coating powders to Class H-rated coating powders, CAPLINQ has an epoxy coating powder to meet every type of motor armature insulation application. All the products offered by CAPLINQ for motor iron armature applications are UL-listed.
CAPLINQ supplies a range of epoxy coating powders developed for electrical insulation of passive electronic devices including resistors, varistors and capacitors. From incredible thermal cycle materials for Class 1 rated Ceramic Capacitors, to low cost epoxy coating powders for film wrap capacitors, CAPLINQ products pioneered this industry and continue to push the envelope for the best performing materials on the market today. Most of the products offered by CAPLINQ for passive electronics have a UL-listing.
CAPLINQ supplies a range of epoxy coating powders developed for toroids, magnetic cores and powder cores. These products are low shrinkage and low moisture absorption coating powders which maintains the stability and inductance values of the toroid cores. These products are suitable for Molypermalloy (MPP), Iron, Sendust and other alloy powder cores. Most of the products offered by CAPLINQ for powder cores have a UL-listing.
CAPLINQ supplies epoxy coating powders developed specifically to act as an epoxy binder resin for pot cores used in inductor motors. These products have excellent green strength to allow the transport from the press to the oven. Once cured, these pot cores can be used at temperatures up to 180°C and maintain their mechanical properties as well as their magnetic properties.
Epoxy Coating Powders vary widely in their composition and application. Epoxy Coating Powders can be used for coil windings, toroids and powder cores, capacitors, resistors and varistors, busbars and switchgears or other applications that require electrical insulation. Use our Epoxy Coating Powder selector tool to help you choose the right epoxy coating powder for your application.
Epoxy Coating Powder Technical Papers, Epoxy Coating Powder Marketing Brochures, Epoxy Coating Powder Technical Data Sheets and MSDS. If these are what you are looking for, then this is where you should be.
Everyday, people just like you have questions about epoxy coating powders. At CAPLINQ, we try to help people just like you by blogging about epoxy coating powders. From epoxy coating powder prices to harmonization codes to product part numbers and leadtimes. We try to post as much information as we can on our blogs, to help you find more relevant information about epoxy coating powders.