HY938Half flowing-seal fixing modified silane sealants
One-component modified silicone material, no solvent, no isocyanate, anti-pollution after curing, green environmental protection, excellent heat resistance and anti-aging ability. Suitable for adhesive sealing of LED lamps. This product complies with environmental protection requirements, does not contain harmful substances in GB18583 "Limitations of Hazardous Substances in Adhesives for Interior Decoration Materials", and complies with EU ROHS and REACH environmental protection standards.
Product details
Product Features
1.No solvent, no PVC, no isocyanate, non-toxic, odorless, non-polluting, neutral and environmentally friendly.
2.The surface has good paintability and is compatible with most paints. After the surface is dry, it can be sprayed without affecting the curing speed.
3.Excellent thixotropy and extrudability, suitable for wide temperature range.
4. No primer is required, and it has excellent adhesion to metals, electrophoretic steel, ABS, PC and other materials.
5. Excellent weather resistance, aging resistance, excellent tensile and compression recovery.
Curing mechanism
A solid bonding sealant, the curing method is formed by the hydrolysis of silane and moisture in the air and then condensation, which belongs to the moisture-absorbing curing glue. Once the colloid is opened, the colloid absorbs the moisture in the air, gradually solidifies from the colloid surface to the deep layer, and becomes an elastomer. The higher the temperature and humidity, the faster the cure; the slower the cure at low temperature and low humidity.
chemical resistance
The product can be resistant to fresh water, sewage, waste water, calcium carbonate aqueous solution, detergent, low acid, corrosive aqueous solution, etc. for a long time, mineral oil, vegetable oil, fat, fuel, etc.
Scope of application
Sealing and bonding of LED lamps;
Sealing, bonding and potting of electronic components;
Sealing, bonding and potting of mechanical and electrical equipment parts;
Adhesive sealing and potting in other fields of application.
Instructions
1. The bonding surface should be free of oil stains, dust, impurities, etc.;
2. Cut the sizing nozzle into the required size and shape according to the process requirements;
3. Cut off the sealant seal, install the glue nozzle, and put it into the glue gun;
4. Apply the sealant evenly on the joints, and the thinnest part is greater than 1mm; when using a pneumatic gun, the air pressure should be controlled at 0.2~0.4Mpa;
5. After the product is dry, it can be trimmed by traditional methods to remove excess glue.
Precautions
1.Avoid construction in an environment below 5℃ and humidity less than 20%
2.The pneumatic pressure is strictly prohibited to exceed 0.5 Mpa. When it exceeds, the gas will enter the hard packaging tube, causing the problem of colloidal bubbles.
1.Since the coating contains high solvent content, the surface of the glue will become soft. In order to obtain the best appearance and performance, the glue should be colored after curing for 24 hours.
2.For special chemical reactions, please contact our technical department
Packaging Specifications
Plastic tube: 300ml / tube, 50 tubes / box
Plastic drum: 2.6L/drum, 6 drums/carton
Plastic drum: 25kg/drum
Technical Parameters
| Model | HY938 Paste | HY938 Half Flowing | HY938 Flow |
| Appearance | White paste | White semi-flowing | Black self-leveling |
| Sag (mm) | ≤2 | ≤6 | -- |
| Density (g/cm3) | 1.4±0.2 | 1.4±0.2 | 1.2±0.2 |
| Surface drying time (min) | ≤50 | ≤30 | ≤30 |
| Curing speed (mm /24h) | 2.0~3.0 | 2.0~3.0 | 2.0~3.0 |
| Tensile shear strength (Mpa) | ≥1.0 | ≥0.8 | ≥0.5 |
| Tensile strength (Mpa) | ≥1.0 | ≥0.8 | ≥0.5 |
| Elongation at break (%) | ≥150 | ≥150 | ≥150 |
| Tear strength (KN /m) | ≥6 | ≥5 | ≥5 |
| Hardness (Shore A) | 20~60 | 20~60 | 20~60 |
| Thermal conductivity (W/m•K) | 0.2~0.5 | 0.2~0.5 | 0.2~0.5 |
| Temperature resistance range (℃) | -40~120 | -40~120 | -40~120 |
