PP Shenhua Ningmei 2500H

PP Shenhua Ningmei 2500H Resin

Material Introduction: PP Shenhua Ningmei 2500H is impact‑copolymer polypropylene produced by coal‑to‑propylene process. It possesses favorable room‑temperature and low‑temperature impact resistance, high rigidity and balanced comprehensive properties for specific‑field applications.

Main Applications

Automotive & transportation parts: components for automobiles, motorcycles and children’s vehicles; widely used for battery housings.

Daily‑use articles & industrial packaging: luggage, crates, containers, paint buckets, packing boxes and bulk containers.

Other products: extruded agricultural water pipes, hollow sheets and toys.

Performance Parameters

Performance Category	Test Item	Test Condition	Reference Value	Unit	Reference Standard	Remarks & Interpretation
Basic Properties	Melt Flow Rate(MFR)	230℃/2.16kg	1.9‑2.0	g/10 min	GB/T 3682‑2000, ISO 1133	Medium‑flow impact‑copolymer PP from coal‑based process.
	Density	‑	0.91	g/cm³	ISO 1183	Typical PP density.
Mechanical Properties	Tensile Yield Strength	‑	22.2	MPa	GB/T 1040.2‑2006, ISO 527	Tensile yield performance.
	Flexural Modulus	‑	1040‑1100	MPa	GB/T 9341‑2000, ISO 178	Rigidity index.
	Charpy Notched Impact Strength	23℃	To be confirmed	kJ/m²	GB/T 1043.2‑2008, ISO 179	Room‑temperature impact data pending.
	Charpy Notched Impact Strength	-20℃	7.2	kJ/m²	GB/T 1043.2‑2008, ISO 179	Low‑temperature impact resistance.
	Rockwell Hardness	R‑scale	81.0	‑	GB/T 3398.2‑2008, ASTM D785	Surface hardness.
Thermal Properties	Heat‑Distortion Temperature(HDT)	0.45 MPa, non‑annealed	72.3	℃	GB/T 1634‑2004, ISO 75	Heat‑resistance reference.
	Vicat Softening Temperature	‑	148	℃	ISO 306	Vicat softening point.
Other Properties	Molding shrinkage(parallel)	‑	1.5	%	GB/T 17037.4‑2003	Mold design compensation reference.
	Molding shrinkage(perpendicular)	‑	1.6	%	GB/T 17037.4‑2003	‑
	Ash content	‑	≤0.356(3556 mg/kg)	%	GB 9346.1‑2008	‑
	Yellow Index	‑	‑1.2	△Y.I.	GB 2409‑80	Color‑stability performance.
	Cleanliness(colored pellet)	‑	0	pcs/kg	SH/T 1541‑2006	High‑quality pellet grade.
	Cleanliness(black pellet)	‑	0	pcs/kg	SH/T 1541‑2006	‑
	Cleanliness(over‑size & fine pellet)	‑	0.6	g/kg	SH/T 1541‑2006	‑

Injection‑Molding Process Parameters

Process Item	Suggested Range / Description	Remarks
Drying treatment	Generally unnecessary; dry at 80℃ for 1‑2 h if damp due to poor storage	Low‑moisture‑absorption feature of PP.
Melt temperature	190‑230℃	Optimized range to prevent thermal degradation.
Mold temperature	40‑60℃	Crystallization depends largely on mold temperature. Low temperature: poor surface, weld‑line & flow‑mark risks; high temperature leads to warpage.
Injection pressure	60‑80 MPa	Raise pressure for thin‑wall or complex‑structure parts.
Holding time	10‑20 s	Prevent sink mark and excessive shrinkage.
Injection speed	20‑30 mm/s	Adopt high‑speed injection for thin‑wall packaging containers.
Screw speed	Medium speed	Avoid excessive shear‑heat induced material degradation.

Disclaimer: All above data is for reference only.