R-381-1 epoxy potting resin is made from epoxy resin, hardener and filler presented in two-component form. R-381-1 is heating type product and it’s heat-resistant grade is B. It has gained UL certification (E229550) and UL insulation system certification (E242776).
Good manufacturability and insulation property, low shrinkage, shining appearance of condensate and excellent crack resistance.
Embedding, casting and potting for electronic components, motor and apparatus coils. For example: small transformer and instrument transformer coils, capacitor, ignition coils of autocycle and auto etc.
R-381-1 cured resin is blue, and we can provide red, black or other colors according to customers’ needs.
Qualification (as the Q/R 101-2010 company standard)
Part A is black viscous liquid, Part B is brown transparent liquid, no mechanical impurity
Rotary viscosimeter, 40°C
At room temperature
After immersion in water
Power Frequency Electric Strength
How to use
Mix part A and part B with a proportion of 4/1 by weight at room temperature.
Baking: cure at 80-100°C for 4 hours.
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!
Jiaxing Rota-Ropa Insulating Material Co., Ltd. is the biggest manufacturers of impregnating varnish in China and have 21 years history.
We have more than 100 types of products. Our leading products are impregnating varnish, potting and casting glue, mica tape, air dry varnish, enamel and so on, which can be used for kinds of motors, armatures, electronic components, LED, transformers, capacitors and PCB etc. Motors contains air-condition motors, fan motors, electric tool motors, water ...