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Flame Retardants
Newly halogen-free flame retardant
Flame Retardant
Flame Retardant Master
Batch
Specialized Flame
Retardant
(HT-208) Water-resistant APP

Product specification
一、Description
Ammonium polyphosphate (APP) is a kind of high efficient halogen-free flame retardant. It is tasteless, non-toxic, no corrosive gas and high heat stable. APP is widely used in intumescent coating, PE, PP, PU, Epoxy resins, rubber products, fiber board and dry powder fire extinguishing agent.
HT-208W is produced by a special method and surface modified on the basis of ammonium polyhoshate(phase II) , the special treatment attribute its better flame retardancy, excellent water resistant, good thermal stability and improve its compatibility in PP. In short, properties of water resistant APP are superior to ordinary APP.
二、Physical and Chemical properties
Item
Unit
Typical Value
Appearance
--
White powder
P
%
≥21
N
%
≥24
pH value
--
5~7












三、
Appilication
● Plastic, Rubber      ● Fiber, Coating
四、Storage
Store in dry, room temperature, moisture proof
五、Package
25kg/bag, paper & plastic bag

Application guidelines
The following boiling experiments are made under the 70 ℃, 168 hours for the different Ammonium polyphosphates to test the flame retardancy and mechanical properties according to the UL94 standard.
1. Formula
 
              No.
Formula               
1#
2#
3#
DBDPE
21
Antimony Trioxide
7
Ordinary APP
30
Water- resistant APP
30
Charring agent
PP(T30S)
52
70
70
Talk
20

2. Test Result
No.
Item
UL-94 vertical burning data
Tensile properties
(Mpa)
Elongation at Break
(%)
Impact strength
Glow wire
(℃)
CTI(V)
3.2mm
1.6mm
Notched
(KJ/m2)
Un-
notched
(KJ/m2)
Before Boiling
After Boiling
Before Boiling
After Boiling
1#
UL94
V0
V0
V0
V0
25.9
12.8
3.34
14.6
700
600
Dropping
NO
NO
NO
NO
2#
UL94
V0
NG
V2
NG
23.1
34.1
4.12
22.1
---
----
Dropping
NO
YES
YES
YES
3#
UL94
V0
V0
V2
NG
23.2
49.5
5.47
17.2
780
600
Dropping
NO
NO
YES
 
YES

Note: YES means dropping and NO means no-dropping. NG means flame retardancy lower than UL94 V2.


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