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PRODUCTS
  • PRODUCTS NAME: H level GHG prepreg
  • NO.: H level GHG
  • ADD TIME: 2013-08-19
  • Views : 211

一、Product introduction
H level GHG preimpregnation material is made by baking with composition of polyimide film and alkali-free glass and soak B step H level resin liquid.
H level GHG epoxy preimpregnation materials have advantages like good machinery and heat-resisting performance, long storage life and convenient forming process.
H level GHG epoxy preimpregnation material is applied to H level dry-type transformer low-voltage line insulation and open-type transformer’s low-tension insulation of electrical machine, laminated tube and suppresses other insulation parts.

 

Table 1 the curing time under different temperatures of the prodcut: 

 

Temperature(℃)

 130

150

 160

Curing time(h)

  5

 4 

 3

五、General performance

 

Serial number

performance

unit

  requirement
1
Thickness

mm

  0.20±0.03

0.25±0.03 

 0.30±0.03

2

 Ration

 g/m2

  250±30  

 330±40 

360±40
3
Resin content
g/m2
70±20 
80±20 
90±20
4

Volatile matter content

% 

≤2.0
5
Tensile strength lengthways6

 N/10mm

≥180

 ≥200

   ≥220

6
Breakdown voltage

 KV  

 ≥5.0 
7
Curing temperature

 ℃ 

130-160
8

Curing time

h

 3-5 
9
Temperature index
 ≥180 

Note:If there is any other requirement, please have a negotiation

六、Testing, packaging, sign, transportation and storage
4.1、The predelivery test items of product are the 2nd, 3rd, 4th, 5thand 6th requirements of the products standards.
4.2、The product should be stored below 25℃ in a dried, clear and good drafty storeroom, and don’t approaching the combustion source and avoid solar radiation.
4.3、The storage life of the product is half a year after the date of production, if it exceeds the storage life, it can be used only after being tested qualified according to the product standard.
4.4、The product will be baling and each one is 20 to 60kg, and it generally I continuous segments, the breadth can be as wide as 1500mm and it also can be divided into the tape spool according to the customers’ requirements.
4.5、If there is any other requirement, please have a negotiation
4.6、Others should be accord with relevant standard of GB5591.1
七、Application reference technology (coil baking technological condition) 

 

Temperature change

time

80℃--130℃/130℃

   0.5~1h/1h

130℃--160℃/160℃

   0.5~1h/4h

160℃--130℃/130℃ 

  1h/1h

130℃--80℃/80℃

   0.5h/1h

As the diversity of production and application of various transformers, the date above can be adjusted according to the producers’ situation.

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