Jiaxing Rota-Ropa Insulating Material Co., Ltd.
Main products:potting resin,insulation material
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  • Contact Person : Mr. shi Nikhi
  • Company Name : Jiaxing Rota-Ropa Insulating Material Co., Ltd.
  • Tel : 86-573-83188888
  • Address : Zhejiang,Jiaxing,Fengqiao
  • Country/Region : China

Fast dry epoxy dipping resin R-831-7

Fast dry epoxy dipping resin R-831-7
Product Detailed
impregnating varnish R-831-7 1.Easy to use 2.good manufacturability 3.low cost 4.high mechanical strength

Brief Introduction

R-831-7 is a two component dipping resin which is formed by epoxy resin, curing agent and styrene. The two component (part A and part B) is 1/1 by weight ratio.It’s heat-resistant grade is B,F. It passed the UL attestation, and it correspond the RoHS environmental protection requirement.

Features

Easy to use, low cost, good manufacturability and insulation property, high mechanical strength.

Applications

Be used for fast drying impregnation, continuous immersion and vacuum impregnation of small stator coils and windings. Like fan motors, air-condition motors, electrical tools motors and water pump motors.

Qualification (as the Q/R 101-2010 company standard)

No.

Test Item

Test Method

Unit

Value

 

1

Appearance

Test Tube

-

Brown uniform liquid, no mechanical impurities

 

2

Viscosity

4#cup, 23±1°C

s

11-13

 

3

Drying Time

120±2°C

min

≤30

 

4

Solids content

120±1°C,1h

%

28-32

 

5

Curing in thick layer

45×45×25mm

90°C 1h

110°C 1h

125°C 2h

 

No less than S1U1I4.2

 

6

Power Frequency Electric Strength

Normalcy

MV/m

≥70

 

After immersion in water

 

≥50

 

7

Volume Resistivity

Normalcy

Ω·m

≥1×1012

 

130±2°C

≥1×107

 

After immersion in water

≥1×1010

 

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 2-3 hours at 115-125°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

120-130°C

(4)curing temperature

125-135°C

Fast dry epoxy dipping resin R-831-7



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