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Two-component epoxy resin core coating 7025A/B

7025A/B environmental protection series is a room temperature curing epoxy resin, which can be used for the iron core of dry-type transformers. Good insulation performance, good process performance and excellent surface gloss. It is an excellent epoxy resin coating for transformer core covering.
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Two-component epoxy resin core coating 7025A/B
1. Instructions for use
7025A/B environmental protection series is a room temperature curing epoxy resin, which can be used for the iron core of dry-type transformers. Good insulation performance, good process performance and excellent surface gloss. It is an excellent epoxy resin coating for transformer core covering.
2. Appearance and characteristics

 

 
main agent7025A 
Hardener7025B
color

 black or blue

brown or clear liquid
Viscosity40℃(mpa.s)
3.0~4.0×104 
180~270
density40℃(g/cm3
1.55~1.65
1.10~1.20

 

3. Mixing ratio
A:B=100:25 (weight ratio)
Usable time: 25 ℃ × 30-40 minutes (mixing amount of 100 grams)
Curing conditions: The surface can be dry in 4 hours at 25°C, and it can be completely cured in 24 hours.

Fourth, the operation process

1. Cleaning and processing materials;

2. Stir 7025A evenly. After adding 7025B in proportion, use a flat body to fully stir materials A and B. The stirring time is 3-5 minutes. After materials A and B are stirred evenly, they can be used.
5. Characteristics after curing

 

Compressive strength
kg/cm2  
20~23 
Bending strength
kg/cm2   
10~12 
tensile strength

kg/cm2   

16~18 

hardness        
Shored 
78~85
Volume resistance25℃     
(Ω/cm)
1015 
surface resistance25℃   

 (Ω/cm)

  1014 

 

6. Packaging
A: 24kg B: 6kg
7. Shelf life and conditions
Dry and ventilated place (shelf life: 6 months)

Eight, matters needing attention

The activation period of this product is 40-50 minutes, please use it now. Pour unused product into unmixed product. The storage period of this product is 6 months. It is normal that there may be a little precipitation during storage. Please stir well before use.

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