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Phenolic resin for friction material Back

Powder resins are essentially modified or unmodified solid phenolic novolacs that are ground with the crosslinking agent, mainly hexamethylenetetramine (Hexamine) , to a powder consistency and mixed with other additives depending on the application needs.

Parameter

Sp.BKL

3508

Sp.BKN

 2509

Sp.GWH 3520

Sp.GWL

1818

Unit

Appearance

White to pale brown, free flowing powder

 

Moisture content

 1 max

%

Melting point

70 - 90

0C

Pass from 200 mesh

90 min

%

Volatile content

1500c

4 max

%

2000c

5 max

%

Free phenol

0.5 max

%

Ash content

0.2 max

0.2 max

7 - 9

7 max

%

Hexamine content

7 - 9

7 - 9

16 - 20

13 - 16

%

Pellet flow @1250c

30 - 55

20 - 50

30 - 50

8 - 15

mm

Curing time @ 1500c

60 - 90

60 - 90

75 - 95

75 - 95

sec

  •   Brake linings & Clutch Facing.
  • Processing and reinforcement for rubbers like natural nitrite and SBR etc.
  • Heat resistance brake linings.
  • Grinding wheel.
  • Shell moulding for making foundry moulds and cores.
  • Bonding of cinema arc carbon & cinema electrodes.
  • Lamp capping cement.

 

Packing:
  • 25Kgs. nett laminated polyethylene bags.
Handling:
  • It is advisable to wear a dust musk while emptying the bags. Hands should be thoroughly washed at the end of the working day and before meals.  
Storage:
  • Storage in cool and dry place at 250c gives stability for 6 months.