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NBR Powder

  • Powdered-Nitrile-Butadiene-Rubber-For-Friction-Material

Powdered-Nitrile-Butadiene-Rubber-For-Friction-Material

  • CAS NO:9003-18-3
  • Molecular Formula:C21H27N3X2
  • Appearance:White or yellowish powder
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Advantages

Powdered Nitrile Butadiene Rubber(PNBR) has good bonding effect,can increase the adhesive ability of friction material system.It can improve the impact strength of pressure embryo,and provide product flexibility.So PNBR is the ideal friction material modifier,mainly used for brake pad,train brake shoe,motorcycle and other fields.The main function and effect as following:

1.Modify phenolic resin,increase its flexibility and improve the frictional properties,thereby obtain high and stable coefficient of friction.

2.Add powdered NBR in friction materials can make rubber powder particles uniformly distributed in the mixed materials,thereby reduce the abrasion of the friction material.

3.Powdered NBR has good toughening effect as the elastomer,can increase the impact strength of friction materials.

4.PNBR can reduce products hardness and braking noise to improve braking comfort.


Product Specifications


Index name

Appearance

Mooney Viscosity

Bound Acrylonitrile

Gel Content

Volatile

Sieving Rate



Main field application

Measurement Unit

ML100℃1+4

%

%

%

%


Test Condition

105±5℃

120min

Standard380μm

Top-grade180μm

Special-grade150μm


PNBR-03


White or yellowish powder


100~150


35~40


≥90


≤1.0


≥98

Disk, drum brake pad, Clutch heading, grinding wheel, Abrasives, Train brake shoe and so on


PNBR-04


≥150


35~40


≥95


≤1.0


≥98


PNBR-05


50~100


30~35


≥80


≤1.0


≥98



Applications

It's used for friction material such as disk,drum brake pad,clutch heading,grinding wheel,abrasives,train brake shoe and so on.