PUR1618 High Performance Two Component Polyurethane Potting Gel

Product features and applications

PUR 1618 is a two-component-free-free room temperature or a heat-curable polyurethane gel for two-component sealing and filling. The raw material does not contain heavy metals, green environmental protection, wide process, high finished physical

properties, and good binding properties. The room temperature and heating curing can be deeply cured, and the two groups have a good fluidity after mixing, the hardness is extremely low, the flexibility is excellent, and the low temperature resistance is excellent. It is used in communication equipment,

transformers, control power, ignition Pouring and potting of controllers, electronic sensors, medical insoles etc.

* Low viscosity, strong operability

* Excellent low temperature characteristics, excellent weather resistance

* Excellent electrical insulation, stability

* Good waterproof, moistureproof, very low water absorption

Packaging

PUR 1618 polyurethane potting Gel，

purchasing code: A 1618012， B 1618022;

a) Part A: Packing 10 kg/drum, b) Part B: Packing 10 kg/drum

Storage conditions

a) Unused raw materials should be stored in well-sealed barrels to avoid moisture intrusion and affect raw material quality. The opened material should be sealed and stored, and used up as soon as possible.

b) It is recommended to store in a cool area, avoid direct sunlight.

c) Storage temperature: 10-30℃ , storage period of material A is 12 months, and material B is 6 months.

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PUR1618 Two Component Polyurethane Potting Gel

$9.00

$180.00 per 20 Kilograms

Color: Clear Yellow

Quantity

Test items       Unit and condition       Test standard

Appearance   A
B
Visual   Visual   Yellow transparent fluid
           Visual   Yellow transparent fluid

Viscosity   A
B
A+B

25℃ mPa·s   GB/T 10247-2008   100-200
           GB/T 10247-2008   50-200
           GB/T 10247-2008   300-800

Density   A
B
A+B

25℃ g/cm3   GB/T 15223-1994   0.95±0.05
           GB/T 15223-1994   1.00±0.05
           GB/T 15223-1994   1.00±0.05

Operating time   25℃ , minutes, 150g, Viscosity up to twice   GB/T 10247-2008   8~15
   25℃ , minutes, 150g,
Viscosity up to 100,000cps   GB/T 10247-2008   20~40
Gel time   25℃ , minutes, 150g,   GB/T 10247-2008   40~70
Mixed ratio   Weight ratio   ----   A ：B=100 ： 100
Curing condition   ℃/h   ----   25℃/ 24 h or 70℃/2h
Characteristics after curing
Version 1.01 / 2025-07 / PUR 1618 A/B PU Potting Gel www.shmaxtech.com

Items   Unit and condition   Test standard
Color   Visual   Visual   Yellow transparent
Hardness   Shore 00   GB/T 4985-2010   45±10
Water absorption rate   24hrs, 25℃ , %   GB/T 8810-2005   <0.02
Thermal Conductivity   W/m.K   GB/T 10297-1998   0.10
Glass transition temperature, Tg   ℃   GB/T 11998-1989   -70
Volume resistivity   25℃ , Ω·cm   GB/T 1692-92   2.5*1014
Dielectric strength   25℃ , kV/mm   GB/T 1695-2005   >25
Dielectric constant   50Hz ，25℃   GB/T 1693-2007   2.7
Dielectric loss   50Hz ，25℃   GB/T 1693-2007   0.002
Linear thermal expansion   μm/（ m ，℃ )   GB/T 20673-2006   230
Application temperature   ℃   GB/T 20028-2005   -80～120
How to use
a) Use: The raw material of material A contains functional resin, before taking the material, pay attention to the detection package is intact. After the filler is completed, it is sealed to prevent the original packaging to prevent excess of moisture. After the rubber is exposed to the air time, it may cause the AB material to bubbling the phenomenon.
b) Operation: B material is exposed to water absorption in the atmosphere, and the phenomenon is turbid until agglomeration, and the A material also needs to be stored, so as not to solidify excessive bubbles. The environment in which the curing process needs to control the humidity as low as possible, and the relative humidity should not exceed 60%.
c) Preheat: The cast device is taken from 70 to 80 ° C for 1 to 2 hours. It can also reduce the temperature to extend the heating time to remove the device moisture.
d) Defoulating: Vacher for A \ B buckets, simultaneously, to ensure that the A \ B glue is vacuum- free.
e) Pouring: Put the mixture into the device through a static mixer, the gel time is approximately within 60 mins.
f) Curing: 25℃ / 24 hrs. The environmental humidity should be controlled at <70%, and the temperature is low to extend the curing time as appropriate.
As a manufacturer, we would like to share with you what we have learned about the different types of potting compounds and their characteristics.
The potting compounds on the market vary in viscosity, requirements for cure conditions, among other factors. Compounds such as polyurethane, silicone, and epoxy are widely used in a variety of applications.
Silicone Potting Compounds are soft and flexible, silicone potting compounds and encapsulating materials possess a good level of elongation.Silicone potting compound can also withstand a wide range of temperatures. Most silicone materials are able to operate at temperatures between -40°C and 200°C.
Epoxy potting compounds generally perform as a better adhesive, high-temperature resistance, and chemical resistance and have better adhesion to a wide variety of substrates and typically do not need primers.
Polyurethane Potting Compounds generally have better flexibility, elongation, and abrasion resistance.
Acrylic Potting Compounds are UV and heat-hardening materials, with fast hardening, adequate chemical resistance, and clear appearance.

PUR1618 Two Component Polyurethane Potting Gel

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