HM2S vs Ecopiren 3.5C: Performance Comparison Based on HFFR Formulations

This article presents a comparative evaluation of KMT INDUSTRY’s HM2S and Ecopiren 3.5C based on technical data and compound performance. All testing was conducted using High-Filled Flame Retardant (HFFR) formulations.

1. Powder Technical Data Comparison

Parameter	HM2S	Ecopiren 3.5C
Bulk Density (g/cm³)	0.50	0.63
Whiteness R457 (%)	95.5	94.5
Oil Absorption (%)	35	33.5
Surface Property	Hydrophobic	Hydrophobic
Specific Surface Area (m²/g)	10–14	9–11
Laser Particle Size D50 (μm)	2.5–3.5	4.30

Whiteness compare

HM2S
Ecopiren 3.5C

PSD:HM2S

Summary:

HM2S exhibits higher whiteness.
HM2S shows a finer median particle size (D50).

2. HFFR Compound Performance Evaluation

All compounds used a mixed filler system consisting of aluminum hydroxide (ATH) and magnesium hydroxide (MDH), with a total filler loading of 65% (50% ATH + 15% MDH).

Formula 1 – ATH Grade: 104 LEO

Parameter	Test Standard	HM2S	Ecopiren 3.5C
Torque (N·m)	—	2.64	2.86
Volume Resistivity (Ω·cm, 5000 V)	GB/T 1410-2006	9.59 × 10¹⁴	1.39 × 10¹⁵
Melt Flow Index (190 °C / 10 kg)	GB/T 3682 / ASTM D1238	0.38	0.25
Tensile Strength (MPa)	CB/T 32129-2015	16.9	15.4
Elongation at Break (%)	CB/T 32129-2015	139	128
Limiting Oxygen Index (LOI)	GB/T 2406.2 / ASTM D2863	40.5	40.0
Burning Drops	YES / NO	NO	YES

Key Findings: HM2S demonstrates lower torque and higher melt flow index, indicating easier processing. It also shows improved mechanical performance and achieves no burning drops in vertical burning tests.

Formula 2 – ATH Grade: KMT A1

Parameter	HM2S	Ecopiren 3.5C
Torque (N·m)	2.99	3.06
Tensile Strength (MPa)	17.3	15.7
Elongation at Break (%)	143	142
Burning Drops	NO	YES

Formula 3 – ATH Grade: 40CD

Parameter	HM2S	Ecopiren 3.5C
Torque (N·m)	2.96	3.35
Tensile Strength (MPa)	17.3	16.3
Elongation at Break (%)	130	137
Burning Drops	NO	YES

3. Overall Conclusion

Fire Performance: HM2S achieved no burning drops across all tested HFFR formulations.
Processing Behavior: Consistently lower torque values indicate easier processing.
Mechanical Properties: Higher tensile strength was observed in all formulations.
Powder Appearance: HM2S provides higher whiteness in raw material form.

Contact Information

For detailed test reports, samples, or formulation support, please contact KMT INDUSTRY.

Comments