Introduce:
- DELO-GUM is a one-component, solvent-free, heat-resistant base on modified silicone adhesive (RTV-1 Heat Resistant Silicone) used in a wide range of adhesive and sealing applications;
- The heat resistance of DELO-GUM glue is usually from -50 to +180 oC, especially DELO-GUM 3699 glue can withstand heat up to 300 oC;
- DELO-GUM is widely used in bonding metal, plastic, rubber, glass, and many other materials;
- Glue can self-cure when contact with environmental humidity, polyaddition to create polysiloxane bonds, and by-products are oxime, amine, or acetic acid depending on the glue composition;
- All DELO-GUM glues can be stored at room temperature, most of the shelf life committed to the user is at least 12 months (except CR3010 which is 6 months);
- All products meet RoHS standards according to directive 2015/863/EU.
Application:
- Adhesive to many materials such as metal, plastic, and glass, need high adhesion, DELO-GUM 3697 should be used;
- For applications requiring high-temperature resistance up to 300 oC, DELO-GUM 3699 is recommended;
- For casting applications, encapsulant electronic components, should choose a low viscosity, more flexible type such as DELO-GUM CR3010, denser, use DELO-GUM SJ3097;
- Sealing large gaps requires a high viscosity, and a strong adhesive such as DELO-GUM 3697, if more heat resistance is required, DELO-GUM 3699 is more suitable.
Some applications using DELO-GUM glue:
Bonding the silicone gasket seals of the freezer
Bond the silicone gaskets seals of the freezer with DELO-GUM 3697 adhesive
Requirements and tests for adhesives:
- Good adhesion to silicone;
- Cured glue should be soft and elastic;
- Temperature resistant -40 to +130 °C;
- Airtight;
- Do not damage food and pharmaceutical products.
Additional benefits of DELO adhesive for users:
- No need for surface treatment;
- Single component adhesive and easy to apply directly by hand;
- The properties of silicone sealants and gaskets are similar.
User manual:
Surface cleaning:
Surface Activation:
Dispensing:
Curing:
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Specifications:
DELO-GUM Silicone | |||||
Decomposition by-products | Oxime | Amine | Acetic acid | ||
Product code | |||||
Color (1mm thick glue layer after curing) | Milky white, transparent | Milky white, transparent | Gray recording | Milky white, transparent | Red |
Density (g/cm 3 ) (DIN 53479, 23 o C) | 1,0 | 1,0 | 1,4 | 1,1 | 1,2 |
Viscosity (mPa.s) (Brookfield, 23 o C) | 17000 | 119000 | Pasty | 350000 | Pasty |
Processing temperature (oC) | 5~35 oC | ||||
Skin formation time (minutes) | ~11 | ~8 | ~7 | 10~20 | ~5 |
Curing speed (23 o C, 50% rh) | 2mm/24h | ||||
Tensile strength (MPa) (DIN ISO 527) | 0,2 | 0,4 | 1,2 | 5 | 3 |
Elongation at tear (%) | 110 | 280 | 300 | 500 | 300 |
Shore hardness | A 18 | A 16 | A 18 | A 28 | A 35 |
Shrinkage (%vol.) | ~3 | ~3 | ~3 | ~3 | ~3 |
Water absorption (%wt) | 0,06 | 0,14 |
| 0,06 | 0,2 |
Volumetric Resistance (Ohm.cm) | - | - | - | 1x1013 | - |
Surface Resistance (Ohm.) | 2x1014 | - | - | - | - |
Dielectric strength (kV/mm) | - | 15 | - | 21 | - |
Dielectric constant in the range 50~70 Hz | - | - | - | 3,1~3,0 | - |
Shelf life | 06 months, temperature from 15~30 o C | 12 months, temperature from 15~30 o C | |||
Special properties | Compliant VOC limit standards for adhesives according to GB33372-2020, neutral crossing, do not corrosives components. | Self-spreading glue layer, tensile-equalizing, good electrical insulation. | Weather-resistant, anti-aging, tensile-equalizing. | Self-leveling glue layer, balanced tensile force, high mechanical properties, good electrical insulation. | Heat resistant to 300 o C, cover large gaps, high elasticity, tensile-equalizing. |
CR= Casting Resin, SJ = Structure Joining
For more detailed information, please contact us.
HUST Vietnam is proud to be the exclusive distributor of adhesive products, dispensing and curing systems, and technology transfer from DELO in Vietnam!