Polyurethane Resin and Hardener R-381-8 Potting Compound
Brief Introduction
R-381-8 polyurethane embedding adhesive is made from polyurethane, hardener and filler presented in two-component form. R-381-8 cures at room temperature, and its heat-resistant grade is B. It has gained UL certification (E229550).
Features
Good manufacturability and insulation property, low shrinkage, shining appearance of condensate and excellent crack resistance.
Application/Use
Embedding, casting and potting for electronic components, motor and apparatus coils. For example: capacitors, small transformers, PCB, ignition coils of autocycle and auto etc.
Qualification (as the Q/R 101-2010 company standard)
No. |
Test Item |
Test Method |
Unit |
Value |
|
1 |
Appearance |
Test Tube |
- |
Part A is viscous liquid, Part B is brown transparent liquid, no mechanical impurity |
|
2 |
Viscosity |
Part A |
Rotary viscosimeter, 25°C |
mPa.s |
6000±1000 |
Part B |
50±10 |
||||
Mix |
800±200 |
||||
3 |
Density |
Part A |
Water=1 |
- |
1.40 |
Part B |
1.20 |
||||
Mix |
1.36 |
||||
4 |
Hardness |
Shore D |
- |
≥65 |
|
5 |
Volume Resistivity |
At room temperature |
Ω·m |
≥1×1013 |
|
After immersion in water |
≥1×1012 |
||||
6 |
Power Frequency Electric Strength |
Normalcy |
MV/m |
≥20 |
|
7 |
Pot life |
23±2°C |
h |
≥0.5 |
|
Established in 1992, Rota Group is one of the most professional manufacturers of impregnating varnish, mica tape, potting resin and embedding resin in China. Most products have been approved by ISO9001, 14000, UL, TUV, FDA, RoHS and REACH, widely used in high-voltage motors, wires and cables, household appliances, industrial pumps, and metallurgy equipments etc. We win the trust of the majority of well-known manufactures, like BOSCH, BLACK & DECKER, Fujitsu, Shibaura, REGAL, Siemens, EPCOS, N.P.V. and so on.
Professional quality, creating value for customers. Rota Group lead in the aspects of industry scale, product technology and innovation capacity, we will provide quality products and professional services for you. Welcome you!
Send Inquiry to This Supplier
You May Also Like
-
60A-100A Low-temperature High Viscosity TPU Solvent Based Adhesive MaterialUS$ 2.22MOQ: 1 Kilogram
-
50ml Loctite Screw Glue 290 Penetrating Medium Strengthanti-loose Metal Thread Locking Agent 222 243 242NegotiableMOQ: 1 Bag
-
High Grade Construction Hot Melt Adhesive for Baby DiaperUS$ 2.8 - 3.2MOQ: 1 Ton
-
2016 Zhengzhou Factory Natural Artificial Stone Mold for Making Artificial StoneUS$ 1 - 30MOQ: 1000 Pieces
-
Hot Seal de High Quality Silicon Rubber Bushing From China O RingsUS$ 0.1 - 10MOQ: 100 Pieces
-
Aluminum Foil Self-adhesive TapeNegotiableMOQ: 100 Rolls
-
Glue Stick, Hot Melt Glue Stick, Glue Gun StickUS$ 2.9 - 2.9MOQ: 100 Kilograms
-
Best Quality Cheapest Animal Shape Silicone Rubber Oven MittsNegotiableMOQ: 2000 Pieces
-
8 Pieces in a Pack Super GlueUS$ 0.33 - 0.33MOQ: 1800 Sets
-
Mmodified Corn StarchUS$ 675 - 705MOQ: 10 Tons

