PP Shenhua Ningmei 1102K Resin

Material Introduction: PP Shenhua Ningmei 1102K is flat‑yarn homopolymer polypropylene resin. Featuring stable flowability and excellent mechanical properties, it is an ideal grade for woven‑product applications.

Main Applications

Woven products: woven bags, binding ropes, cords and other similar articles.

Injection‑molded products: general mechanical parts, corrosion‑resistant parts and insulating components.

Performance Parameters

Performance Category	Test Item	Reference Value	Unit	Reference Standard	Remarks & Interpretation
Basic Properties	Melt Flow Rate(MFR)	2.8‑3.5	g/10 min	GB/T 3682, ISO 1133	Flat‑yarn grade homopolymer PP
	Density	0.908	g/cm³	ISO 1183	‑
Mechanical Properties	Tensile Yield Strength	31.0‑34	MPa	GB/T 1040, ISO 527	‑
	Tensile Breaking Strength	33.9	MPa	GB/T 1040.2‑2006	‑
	Elongation at Break	572	%	GB/T 1040.2‑2006	‑
	Izod Notched Impact Strength	3	kJ/m²	ISO 180	‑
Thermal Properties	Heat‑Distortion Temperature (0.45 MPa)	89	℃	ISO 75‑2/B	‑
	Heat‑Distortion Temperature (1.8 MPa)	55	℃	ISO 75‑2/A	‑
	Vicat Softening Temperature	152	℃	ISO 306	‑
Other Properties	Isotactic Index	＞95	%	‑	‑

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	‑
Barrel rear zone(feed section)	160‑180℃	Prevent thermal degradation.
Barrel middle zone(compression section)	180‑200℃	‑
Barrel front zone(metering section)	200‑220℃	‑
Nozzle temperature	200‑210℃	‑
Mold temperature	40‑60℃，recommended 50℃	Low temperature may cause poor surface, weld‑lines and flow‑marks; high temperature tends to induce warpage.
Injection pressure	70‑100 MPa	Higher pressure available for thin‑wall or complex‑structure parts.
Holding pressure	50%‑60% of injection pressure	Prevent shrinkage cavity and excessive shrinkage.
Injection speed	Medium speed	High‑speed injection improves appearance yet may bring internal stress; low‑speed injection is beneficial for venting.
Screw speed	50‑100 rpm	Avoid excessive shear heat which will cause material degradation.

Disclaimer: All above data is for reference only.