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■ PRODUCT DESCRIPTION

- NILBURN NP is a phosphorus/nitrogen based halogen free intumescent flame retardant for polyethylene, polypropylene and their copolymers. It is specially formulated with surface treated phosphorus and nitrogen chemicals of high heat stability and high flame retardancy.  It has good compatibility with polymer.

 

■ CHARACTERISTICS

- High  heat stability

- Low smoke and toxicity

- Low affect on polymers’ mechanical properties

- High efficiency - UL.94 VO at 1.6 mm in polypropylene at 30% loadings.

- Enables the compounding of Flame Retardant polyolefins with low density, high elongation and high
   impact strength.

- Limited water solubility.

- Small particle size.

- Neutral pH in aqueous solution.


TECHNICAL DATA

 

Appearance
white powder
Particle size
> 400mesh
Bulk density
0.59±0.05
Phosphorus content
18
Nitrogen content
16
Decomposition
> 250℃



 

THERMAL STABILITY
-
Thermogravimetric analysis ( TGA ) at 20℃/min  

       1% weight loss    
250℃
      9% weight loss     
300℃
      53% weight loss    
400℃



TYPICAL APPLICATIONS

-
Low density flame retardant polyolefins with high elongation and impact resistance can be achieved with
  NILBURN.NP.

- VThe following flame retardant performance was obtained on formulating a compound of NILBURN NP with
  polypropylene (PROPATHENE. GYM621).

NILBURN NP
18
21.00
24.00
27.00
30.00
LOI(ASTM D2863)
28.70
29.40
30.40
32.40
34.20
UL.94 3.2 mm
V-2
V-2
V-0
V-0
V-0
UL.94 1.6 mm
V-2
V-2
V-2
V-0
V-0

[ PROPATHENE. is a registered trade mark of ICI ].

 

- The following flame retardant performance was obtained on formulating a compound of NILBURN NP with polyethylene (BP LDPE Grade LM1620 AA).

NILBURN NP
27.00
30.00
33.00
LOI(ASTM D2863)
27.60
29.20
30.20
UL.94 3.2 mm
V-2
V-0
V-0
UL.94 1.6 mm
NR
V-0
V-0

 

■ SUGGESTIONS

- It is suggest to use mineral oil to improve wetting if granular PP is used.

- It is suggest to add about 1% of TiO2 or 3% silica in the formulation to enhance flame retardancy
   and improve the luster.

- It is also suggest to add in about 1% PTFE to enhance flame retardancy if possible.

- The processing temperature is prefereably at 180-200℃.

 
■ PACKING

NILBURN NP is available in 20 kg drum.

 

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