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Halogen-free expansion flame retardant FR-1420
Introduction
FR-1420 is specially designed for PP, PE and other polyolefin, TPE, TPV and other elastomers, with phosphorus and nitrogen elements as the main flame retardant elements (the system does not include APP), mainly by the mechanism of carbon expansion flame retardant effect. Not subject to RoHS and REACH; It has the characteristics of high flame retardant efficiency, good thermal stability, no precipitation, good water resistance, light aging resistance and low smoke non-toxic. Fr-1420 flame retardant PP, add 22%-25%, flame retardant to UL 94 V-0(1.6mm), and through 70℃×168 hours immersion test (UL746C), GWIT900℃ gwire test; Fr-1420 is especially suitable for glass fiber reinforced PP, where 20% can be added to UL 94 V-0(0.8mm).
Physical and Chemical Properties
|
Item |
Unit |
Index |
|
Appearance |
—— |
White Powder |
|
Whiteness |
% |
≥95 |
|
The Content of Phosphorus |
%(W/W) |
≥19 |
|
The Content of Nitrogen |
%(W/W) |
≥21 |
|
Density |
g/cm3 |
~1.5 |
|
D50 Particle Size |
μm |
≤14 |
|
Process Condition |
℃ |
MAX. 250 |
|
Moisture |
%(W/W) |
≤0.5 |
Packing/storage: moistureproof packing, 25kg/ bag, according to the general industrial production operation, avoid dust irritation.
Recommended dosage:
|
Type of resin |
PP |
PP |
PP-7926 +20% fiberglass |
PP-7926 +30% fiberglass |
PP-7926 +20%GMT |
|
FR-1420 dosage % |
≥18 |
≥24 |
≥21 |
≥21 |
≥24 |
|
Flame retardant effect UL94 |
V-0(3.2mm) |
V-0(1.6mm) |
V-0(1.6mm) |
V-0(0.8mm) |
V-0(1.6mm) |
Processing matters needing attention :
(1) FR-1420 initial thermal decomposition temperature in the air is 280℃, so the processing temperature of the twin screw can be adjusted up according to the specific situation to strengthen dispersion and improve the effect of plasticizing. A certain vacuum degree must be kept in the process of twin-screw extrusion.
(2) When FR-1420 is used in PP, it is not recommended to use screw combinations with strong shear.
(3) FR-1420 can be customized according to customer requirements, conducive to dispersion, avoid smoke.
Application Examples
1. Formula and performance:
|
|
UL94 |
灼热丝起燃温度Ignition temperature of heating wire(℃) GWIT |
灼热丝可燃性试验Burning wire flammability test(℃) GWFI |
相比电痕化指数Compared to the tracking index(V) CTI |
拉伸强度tensile strength(MPa) |
断裂伸长率Elongation at break(%) |
无缺口冲击No gap impact(kJ/m2) |
缺口冲击Gap impact(kJ/m2) |
|
PP-7926 +25% FR-1420 |
V-0(3.2mm) V-0(1.6mm) |
900(2.0mm) |
960(2.0mm) |
600 |
18.6 |
33.1 |
24.4 |
5.7 |
|
PP-7926 +21% FR-1420 +30%fiberglass |
V-0(3.2mm) V-0(0.8mm) |
900(2.0mm) |
960(2.0mm) |
600 |
77.5 |
1.3 |
35.9 |
11.4 |
Note: All the above application data are typical values of FR-1420. The above content was compiled and interpreted by Chongqing Kejufu New Materials Co., Ltd., version date: March 19, 2022.
