Prefessional 
Halogen Free Flame Retardant Manufacturer

Flame Retardant for Unsaturated Polyester - EPFR-APP231



Among the Preniphor™ EPFR-APP(Ⅱ) series of nitrogen-phosphorus inorganic flame retardants, EPFR-APP231 is a kind of high polymerization degree and crystal type Ⅱ ammonium ppolyphosphate treated with melamine. It is in high content of phosphorus and nitrogen, excellent thermal stability, near-neutral and non-toxic smoke property. With gas source and carbon source, it takes effect by char formation and intumescent mechanism.


EPFR-APP231 is treated with melamine and it is highly recommended in plastics and unsaturated polyester.


Index:

Test  Item

Unit

Target value

Whiteness

——

≥89

Density

g/cm³

～1.9

Bulk Density

g/L

～700

Polymerization Degree

——

≥1000

pH Value (25℃, 10% Suspension)

——

7.5～9.0

Viscosity (25℃, 10% Suspension)

mPa.s

≤50

Decomposition Temp.

℃

≥260

Phosphorus

% (w/w)

31.0～32.0

Nitrogen

% (w/w)

14.5～15.5

Solubility In Water

% (w/w)

≤0.5

Average Particle Size (D50)

μm

～15

Residue on Sieve

% (w/w)

    0    （60 meshes）

　

 ＜0.01%  （150 meshes）

Water/Moisture

% (w/w)

≤0.5

Toxicity And Environmental Hazard

——

Not Detected








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