TF-201 Ammonium polyphosphate flame retardant APP uncoated for fireproof coating
Introduction
Ammonium polyphosphate (Phase II) is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When APP-II is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer.
Specifications
| Specification | TF-201 |
| Appearance | White powder |
| P content (w/w) | ≥31 |
| N content (w/w) | ≥14% |
| Degree of polymerization | ≥1000 |
| Moisture (w/w) | ≤0.3 |
| Solubility （25℃, g/100ml） | ≤0.5 |
| PH value (10% aqueous suspension, at 25ºC) | 5.5-7.5 |
| Viscosity(10% aqueous suspension, at 25ºC) | <10 |
| Particle size (µm) | D50,14-18 |
| D100<80 | |
| Whiteness | ≥85 |
| Decomposition temperature | T99%≥240℃ |
| T95%≥305℃ | |
| Color stain | A |
| Conductivity(µs/cm) | ≤2000 |
| Acid value(mg KOH/g) | ≤1.0 |
| Bulk density(g/cm3) | 0.7-0.9 |
Advantage
It has good stability in water.
The stability test of APP phase II in 30℃ water 15days.
|
|
TF-201 |
|
Appearance |
Viscosity slightly increased |
|
Solubility（25℃, g/100ml water） |
0.46 |
|
Viscosity（cp, 10% aq, at 25℃） |
＜200 |
Application
1. Used to prepare many kinds of high-efficiency intumescent coating, the flameproof treatment for wood, multistory building, ships, trains, cables, etc.
2. Used as the main flameproof additive for expanding-type flame retardant used in plastic, resin, rubber, etc.
3. Make into powder extinguishing agent to be used in large-area outfire for forest, oil field and coal field, etc.
4. In plastics(PP, PE, etc. ), Polyester, Rubber, and Expandable fireproof coatings.
5. Used for textile coatings.
Packing: TF-201 25kg/bag, 24mt/20’fcl without pallets, 20mt/20’fcl with pallets. Other packing as request.
Storage: in dry and cool place, keeping out of moisture and sunshine, min. shelf life one year.
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