PP Dushanzi Petrochemical K8003 Resin

Material Introduction: PP Dushanzi Petrochemical K8003 is injection‑molding block‑copolymer polypropylene. It delivers high‑impact resistance and favorable mechanical properties, widely used for industrial components.

Main Applications

Automotive parts: automotive components.

Heavy‑load parts: load‑bearing industrial components.

Daily‑use articles: baby strollers.

Other applications: home‑appliance parts, thin‑wall products.

Performance Parameters

Performance Category	Test Item	Test Condition	Reference Value	Unit	Reference Standard	Remarks & Interpretation
Basic Properties	Melt Flow Rate(MFR)	230℃/2.16kg	2.5	g/10 min	ASTM D‑1238	Low‑flow block‑copolymer PP.
	Density	‑	0.90	g/cm³	ASTM D‑1505	Typical copolymer PP density.
Mechanical Properties	Tensile Yield Strength	‑	26	MPa	ASTM D‑638	‑
	Flexural Modulus	‑	1300	MPa	ASTM D‑790A	Rigidity performance.
	Elongation at Break	‑	＞200	%	ASTM D‑638	High ductility.
	Izod Impact Strength	V‑notch,23℃	70	J/m	ASTM D‑256	Room‑temperature impact resistance.
	Rockwell Hardness	‑	75	R scale	ASTM D‑785	Surface hardness.
Thermal Properties	Heat‑Distortion Temperature(HDT)	0.46MPa, non‑annealed	93	℃	ASTM D‑648	Low‑load heat resistance.
Other Properties	Yellow Index	‑	4	‑	ASTM E313‑00	Color‑stability reference.

Injection‑Molding Process Parameters

Process Item	Suggested Range / Description	Remarks
Drying treatment	Generally unnecessary; dry at 80℃ for 1‑2 h 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.