Acrylic modified polysilazane photosensitive resin EK-M04

EK-M04 Introduction:

EK-M04 uses polysilazane as its structural base, grafted with acrylate.
The resulting coating exhibits high pencil hardness and yellowing resistance. It is suitable for low- to medium-temperature bonding, road and bridge construction bonding, weather-resistant and anti-corrosion coatings, insulating and heat-resistant electrical components, transparent wear-resistant protective coatings, and mechanical protective coatings.
It can be cured by UV radiation. After curing, it forms a covalent bond with the substrate through the amino group, chemically bonding it and significantly improving the mechanical strength of the adhesive layer. It can also enhance adhesion to the substrate by adjusting the surface energy.

Applicable substrates:

Carbon steel, stainless steel, cast iron, aluminum alloy, titanium alloy, high-temperature alloy steel, glass-ceramic panels, ceramics, cement, and other materials.

Note: Different substrates require different adhesive formulations. Within a certain range, the surface energy of the substrate can be adjusted to improve the adhesive’s affinity for the substrate. Under certain conditions, chemical bonding can also be achieved through amino groups.

Applicable Temperature:

Suitable for outdoor working conditions with operating temperature below 300℃ and short-term high temperature working conditions of 500℃.
According to the temperature resistance of different substrates, the temperature resistance of the adhesive layer will vary accordingly, and it is resistant to cold and hot shocks and thermal shocks.
(Note: the corresponding products of different substrates will be different).

Product parameters:

Basic construction parameters：

Special Note:

This resin is a solvent-free resin and can be sprayed normally when the air flow rate of the spray gun is large, so it is recommended not to dilute it.

This product is a single-component UV-curing product. It must be used and stored in a place away from ultraviolet rays.
Avoid direct sunlight, windows, or desktop fluorescent lamps, etc.
It is recommended that the coating be applied in one coat, with a dry film thickness not exceeding 150µm. Otherwise, the coating performance will be degraded.

Standard Application Procedure：

Surface Cleaning → Roughening → Cleaning and Blowing → EK-M04 Treatment → Curing

Curing Method for Light-Curing Resin Coatings:

1. After spraying the board, lay it flat to allow it to defoam. After most bubbles have disappeared, if a few bubbles remain, it is recommended to remove them manually, as waiting is time-consuming.
2. Place the defoamed resin board flat in a UV curing machine at a distance of at least 15cm for 1 minute. After initial hardness, observe the hardness. If necessary, adjust the distance to approximately 3cm and continue curing for another 1 minute.
3. The UV curing lamp should have a dominant wavelength of 365nm or 405nm, and a power of 2kW is preferred.

Process Description:

1. Roughening: Before coating, polish or sandblast the substrate surface to remove rust, dust, and dirt adhering to the surface being treated. Roughening significantly affects the adhesive layer’s performance. Ideally, a Sa3 grade and a St3 grade with no scale (GB/T 30790.4-2014) are recommended, so please pay close attention.
2. Cleaning: Use a dedicated cleaning agent or degreaser to remove any remaining oil, dust, and other dirt on the roughened surface.
3. Substrate Drying: Before coating, ensure the substrate surface is dry and clean.
4. Adhesive Mixing: This product consists of resin and photoinitiator. Mix them evenly at a ratio of 100:3-4. Filter the desired amount through a 120-mesh filter (protect from light!) and set aside.
5. Adhesive Application and Bonding: Apply adhesive to the workpiece surface to be bonded and light-cure. After curing, the adhesive layer will exhibit a certain degree of hydrophobicity and oleophobicity.

Product Storage:

1. Storage must comply with national regulations. The storage environment should be dry, cool, well-ventilated, and away from heat and ignition sources. The packaging container must be kept tightly closed and carefully stored.
2. The storage temperature should be maintained between 5°C and 30°C. The shelf life is 6 months.
3. Opened but unused paint must be sealed and stored.
4. Mixed but unused paint cannot be recycled and must be disposed of in accordance with local regulations.
5. Products that have exceeded their expiration date may only be used after passing testing.

Disclaimer:

The information provided above is based solely on our knowledge gained through laboratory and practical experience. Product usage is generally beyond our control, so we can only guarantee the quality of the product itself. Products may be modified to comply with local regulations, and we reserve the right to modify this specification without prior notice. Users should consult Quartz Master New Materials for specific guidance on product suitability based on their needs and specific applications.