PP Shanghai Petrochemical Y2600 Resin

Material Introduction: PP Shanghai Petrochemical Y2600 is fiber‑grade homopolymer polypropylene. It delivers high flowability, good mechanical strength and stable processing performance.

Main Applications

Fine‑denier staple fiber: for tobacco filter tow (cigarette filter tips).

Injection‑molded articles: also applicable for automotive parts.

Performance Parameters

Performance Category	Test Item	Test Condition	Value / Range	Unit	Reference Standard	Remarks & Interpretation
Basic Properties	Melt Flow Rate(MFR)	230℃/2.16kg	26.0±2.5	g/10 min	ASTM D1238	High‑flow homopolymer PP for fiber spinning.
Mechanical Properties	Tensile Yield Strength	‑	≥31.0‑32.0	MPa	ASTM D638	‑
	Flexural Modulus	‑	≥1.30	GPa	ASTM D790	High‑rigidity index.
	Izod Impact Strength	23℃	≥15.0‑16.0	J/m	ASTM D256	Room‑temperature impact property.
Other Properties	Isotactic Index	‑	≥96.0	%	‑	‑
	Yellow Index	‑	≤4	‑	‑	Color‑stability requirement.
	Cleanness	‑	5‑10	points/kg	‑	Impurity particle evaluation.
	Powder Ash Content	‑	≤0.02‑0.03	%	‑	‑
	Fish‑eye(0.4 mm)	‑	16‑40	pcs/1520cm²	‑	Spinning‑grade surface defect index.
	Fish‑eye(0.8 mm)	‑	4‑8	pcs/1520cm²	‑	‑

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.