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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Main Raw Material: unsaturated polyester
  • Usage: Electrical Insulating Varnish
  • Application Method: impregnation
  • State: Liquid Coating
  • Brand Name: rongtai
  • Model Number: R-1140-3

Packaging & Delivery

Packaging Details Seal packing is 16kg/drum or 180kg/drum

Introduction

R-1140-3 fast curing solvent-free impregnating resin is made from unsaturated polyester resin, curing agent and thinner etc. It presents in one-component form and with thermal class F. It has gained UL certification (No.: E227128) and comply with the RoHS environmental requirements.

 

R-1140-3 is widely used and suitable for impregnation of small types of motors and apparatus coils, recommend for Y2 series motor, water pump motor, electric tool motors, and air-condition motor etc. It can be used by fast drying immersion, continuous immersion and VPI method of application.

 

Qualification

No.

Test Item

Test Method

Unit

Value

1

Appearance

Test Tube

-

Red brown transparent liquid, no mechanical admixture

2

Viscosity

4#cup, 23±1°C

s

20-50

3

Gel time

130±2°C

min

3-8

4

Curing in thick layer

2h/130±2°C

-

No worse than S1U1I3,2,

4

Power Frequency Electric Strength

Normalcy

MV/m

≥20

5

Volume Resistivity

Normalcy

Ω·m

≥1×1012

After immersion in water

≥1×1011

155°C

≥1×107

 

 Usage

1. Fast drying impregnation process

1.1 Preheat unit for 1-3 hours at 100-120°C.

1.2 Allow unit to cool to 60°C before dipping into varnish, dip unit in varnish for 2-15 mins until basically no bubble.

1.3 Drain unit for 30-60 mins.

1.4 Bake unit for 2-4 hours at 120-130°C.

2. Continuous immersion process

Flow chart

Start

preheat

cool

immersion

Drain

cure

off

rhythm

2

2

1

2

13-17

(1)rhythm time

3-7 mins

(2)preheating temperature

125-135°C

(3)gel temperature

125-135°C

(4)curing temperature

130-140°C

        

3. Vacuum impregnation process

3.1 Preheat: Rise temperature up to 50-60°C and keep for 30 mins, vacuumize above -0.09MPa and keep 2-5 mins then input resin.

3.2 Vacuum impregnation: Close the vacuum valve, input the resin at least 50mm above the unit, keep the vacuum of -0.08MPa for 3-5 mins.

3.3 Returning resin.

3.4 Drain unit for 30-60 mins.

3.5 Clean: Input thinner into the bottom of tank with pump and keep 5 mins.

3.6 Bake at 120-130°C for 2 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!

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