MDSI 7333 Fast cured one component Silicone adhesive

  • One component, easy to use, short non-stick time
  • Excellent chemical resistance
  • Resistance to moisture, dirt and other atmospheric components
  • Reduces mechanical stress and tension caused by mechanical, thermal shock and vibration
  • Excellent electrical insulation and corona resistance
  • Excellent outdoor aging, service life of up to 20-30 years
  • Stable mechanical and electrical properties at -60-260℃

MDSI 7333 neutral dealcoholized silicone adhesive is a fluid hygroscopic curing silica gel, which forms a flexible rubber body after curing, fully complying with the requirements of the EU ROHS Directive. The release of alcohols during the curing process is non-corrosive to polycarbonate (PC), copper and other materials, and has good bonding and sealing performance for most materials, protecting electronic products in a stable state under harsh conditions.

Test item Test standard Units 7333B 7333B(1#) 7333B(2#) 7338W/ R 7338W(2#) 7338W(3#)
Color Visual Black Black Black White/Red White White
Viscosity GB/T 2794-2013 mPa·s 35000

±5000

50000

±5000

60000

±5000

35000

±5000

70000

±5000

100,000

±20,000

Density GB/T 15223-1994 g/cm3 1.15±0.05 1.25±0.05 1.3 5±0.05 1.15±0.05 1.40±0.05 1.40±0.05
Tack-free Time GB/T13477.5-2002 min 2-5
Post-cure characteristics
Hardness GB/T 531-2008 Shore A 30 ± 5
Thermal conductivity GB/T 10297-1998 W/m.K 0.3
Elongation at break GB/T 528-1998 % ≥200
Tensile strength GB/T 528-2009 Mpa >1.0
Shear strength GB/T 7124-2008 Mpa Iron/iron >1.0
Dielectric strength GB/T 1695-2005 kv/mm 18
Loss factor GB/T 1693-2007 (1MHz) 0.09
Dielectric constant GB/T 1693-2007 (1MHz) 2.9
Volume Resistance GB/T 1692-92 (DC500V) Ω· cm 1.00E +14
  • LED lamp seal, plastic metal shell seal; PCB board components, wiring harness fixed
  • Exquisite electronic parts, waterproof coating for electrical and communication equipment
  • Small modules, photoelectric display and circuit board, under 6mm thin layer potting, plugging
  • Lithium battery protective film bonding, shell sealing

Operation craft

  • Clean the surface: the surface of the sticky or coated material is cleaned, and the rust, dust and oil are removed with cleaning agent.
  • Sizing: Cut the nozzle to the required size and load it into the glue gun. Squeeze the glue solution onto the cleaned surface for an even distribution. When bonding, the adhesive surface can be closed and fixed.
  • Solidification: curing process is a curing process from the surface to the inside, within 24 hours (room temperature and 55% relative humidity) glue will cure 2 ~ 4mm depth, if the glue position is deep, especially not easy to access to the air, the full curing time will be extended, if the temperature is low, curing time will also be extended, It takes more than 3 days for the 6mm thick sealant to fully cure.
  • Precautions: use as much as possible once after opening, once not used up, when used again, squeeze out the cured part, continue to use, does not affect normal use.
  • Please consult MDTECHMarketing Department for the use of dispensing equipment.

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