PP Shanghai Secco S1003 Resin

Material Introduction: PP Shanghai Secco S1003 is widely‑used spinning‑grade homopolymer polypropylene. It features good rigidity, balanced mechanical properties and favorable heat resistance, making it an ideal choice for many finished products.

Main Applications

Woven products: woven bags for grain, fertilizer and cement packaging, packing straps, ropes, brushes, net‑type products, carpet base fabrics.

Injection‑molded products: automotive interior parts (seat frames, interior panels), home‑appliance housings (computer cases, TV housings), household articles (plastic chairs, tables, storage boxes) and daily‑use goods.

Performance Parameters

Performance Category	Test Item	Test Condition	Reference Value	Unit	Reference Standard	Remarks & Interpretation
Basic Properties	Melt Flow Rate(MFR)	230℃/2.16kg	3.0	g/10 min	ASTM D1238	Spinning‑grade homopolymer PP.
	Density	‑	0.905	g/cm³	ASTM D1505	‑
Mechanical Properties	Tensile Yield Strength	‑	35.3	MPa	ASTM D638	‑
	Flexural Modulus	‑	1470	MPa	ASTM D790	‑
	Elongation at Break	‑	＞200	%	ASTM D638	‑
	Izod Impact Strength	23℃	29	J/m	ASTM D256	Room‑temperature impact property.
	Rockwell Hardness	R‑scale	94	‑	ASTM D785	Surface hardness.
Thermal Properties	Heat‑Distortion Temperature(HDT)	0.46 MPa, non‑annealed	100	℃	ASTM D648	Low‑load heat resistance.
Other Properties	Yellow Index	‑	2	‑	ASTM D1925	Color‑stability index.

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	30‑70℃，recommended 40‑60℃	Crystallization mainly determined by mold temperature. Poor surface, weld‑line and flow‑mark defects may occur at low temperature; warpage easily occurs at high temperature.
Injection pressure	80 MPa	Optimal tensile performance observed under this pressure for S1003.
Holding pressure	90 MPa	Optimal tensile performance observed under this holding pressure for S1003.
Injection speed	20 mm/s	Optimal tensile performance observed under this injection speed for S1003.
Screw speed	Adjust according to product cooling time	Avoid excessive shear heat leading to material degradation.

Disclaimer: All above data is for reference only.