PP Ningbo Kingfa KF‑EP548R Resin

Material Introduction: PP Ningbo Kingfa KF‑EP548R is injection‑molding impact‑copolymer polypropylene. It features good rigidity, balanced mechanical properties and high flowability for multiple injection‑molding applications.

Main Applications

Automotive parts: automotive components.

Home‑appliance manufacturing: equipment components.

Household articles: household goods.

Performance Parameters

Performance Category	Test Item	Test Condition	Reference Value	Unit	Reference Standard	Remarks & Interpretation
Basic Properties	Melt Mass‑Flow Rate(MFR)	230℃/2.16kg	To be confirmed (Kingfa KF‑EP548R direct data unavailable; LyondellBasell EP548R:2127)	g/10 min	ISO 1133	Data pending confirmation.
	Density	23℃	To be confirmed	g/cm³	ISO 1183‑1	‑
Mechanical Properties	Tensile Strength	50mm/min	To be confirmed	MPa	ISO 527‑2	‑
	Tensile Strain at Break	50mm/min	To be confirmed	%	ISO 527‑2	‑
	Flexural Strength	2mm/min	To be confirmed	MPa	ISO 178	‑
	Flexural Modulus	2mm/min	To be confirmed	MPa	ISO 178	‑
Impact Property	Izod Notched Impact Strength	23℃,4.0mm	To be confirmed	kJ/m²	ISO 180	‑
Thermal Properties	Heat‑Distortion Temperature(HDT)	0.45MPa	To be confirmed	℃	ISO 75‑2	‑
Other Properties	Mold Shrinkage	‑	To be confirmed	%	‑	Mold‑design reference.

Injection‑Molding Process Parameters

Process Item	Suggested Range / Description	Remarks
Drying treatment	Generally unnecessary; dry at 80℃ for 1‑2 h if damp under poor storage condition	PP low‑moisture‑absorption feature.
Barrel rear zone(feed section)	160‑200℃	Prevent thermal degradation.
Barrel middle zone(compression section)	180‑220℃	‑
Barrel front zone(metering section)	200‑240℃	‑
Nozzle temperature	200‑240℃	‑
Mold temperature	40‑80℃, recommended 50℃	Crystallization mainly determined by mold temperature. Low temperature: poor surface, weld‑line and flow‑mark risks; high temperature will cause warpage.
Injection pressure	80‑140 MPa(800‑1400 bar)	Higher pressure for thin‑wall or complex‑structure parts.
Holding pressure	30%‑60% of injection pressure	Prevent sink mark and excessive shrinkage; holding time accounts for ~30% of cycle time.
Injection speed	Medium speed; high‑speed injection required for thin‑wall packaging containers.	‑
Screw speed	High screw speed(linear velocity 1.3 m/s) is permitted	Complete plasticization before cooling phase finishes.

Disclaimer: All above data is for reference only.