PP Zhenhai Refining & Chemical Z30S Resin

Material Introduction: PP Zhenhai Refining & Chemical Z30S is fiber‑grade homopolymer polypropylene with high melt flow rate, mainly used for spinning and fiber manufacturing.

Main Applications

Man‑made fiber & spinning: Traditional and primary application for high‑speed spinning low‑denier man‑made fibers. Good flowability and strength make it well‑suited for spinning purposes.

Injection‑molded products: Though it supports injection‑molding processing, this grade is optimized for spinning and fiber production. It is not the best option for injection‑molded parts, especially complex or thin‑wall articles.

Performance Parameters

Performance Category	Test Item	Typical Value	Test Condition / Reference Standard	Remarks & Interpretation
Physical Properties	Melt Flow Rate(MFR)	25 g/10min	230℃/2.16kg, ASTM D‑1238L	High‑flow fiber‑grade homopolymer PP
Mechanical Properties	Tensile Yield Strength	32 MPa	ASTM D‑638	‑
	Flexural Modulus	1500 MPa	Mal 7074	‑
	Izod Notched Impact Strength	30 J/m	23℃, ASTM D‑256	‑
	Rockwell Hardness	R‑95	ASTM D‑785	‑
	Yield Elongation	10 %	ASTM D‑638	‑
Thermal Properties	Heat‑Distortion Temperature(HDT)	95 ℃	0.46N/mm², ASTM D‑648	‑
	Vicat Softening Point	154 ℃	1kg, ASTM D‑1525	‑

Processing Parameters

Processing Item	Reference Range (General PP)	Remarks for Z30S high‑flow feature
Drying Treatment	Normally not required	PP absorbs negligible moisture. Drying is unnecessary under proper storage. Dry at 80 ℃ for 1‑2 h if material gets damp.
Barrel Temperature	180‑260℃	Homopolymer PP melting point:165‑170℃. For high‑MFR Z30S, adopt medium‑low temperature range (190‑240℃) to prevent thermal degradation caused by excessive shear heat.
Mold Temperature	40‑80℃	Recommended:50‑60℃. Higher mold temperature improves surface gloss and dimensional stability; lower mold temperature shortens molding cycle.
Injection Pressure	60‑100 MPa	Adjust based on flow length and part structure. Appropriately lower injection pressure due to high flowability to avoid flash defects.
Injection Speed	Medium‑high speed	Take advantage of high flowability with higher injection speed; watch for gas marks and weld‑lines and tune parameters according to actual conditions.
Holding Pressure	30%‑60% of injection pressure	Sufficient holding pressure reduces shrinkage and sink marks. Avoid overly long holding time to prevent excessive internal stress.
Back Pressure	0.5‑1.0 MPa	Moderate back‑pressure improves melt homogenization and venting; high back‑pressure is not required.
Screw Speed	Medium speed	Avoid excessive screw speed to prevent shear‑induced overheating.

Disclaimer: All above data is for reference only.