PP Shaoxing Sanyuan Y26SY Resin
PP Shaoxing Sanyuan Y26SY Resin
Material Introduction: PP Shaoxing Sanyuan Y26SY is random‑copolymer polypropylene with high flowability and high impact resistance.
Main Applications
Fibers & non‑woven fabrics: Primary application for turf yarn, non‑woven fabrics, disposable hygiene articles such as diapers and sanitary napkins, filter materials. Good flexibility meets above‑mentioned application requirements.
Thin‑wall injection‑molded articles: High flowability enables injection molding for thin‑wall products.
Other applications: Transparent containers, food packaging and other relevant fields.
Performance Parameters
| Performance Category | Test Item | Typical Value | Test Condition / Reference Standard | Remarks & Interpretation |
|---|---|---|---|---|
| Physical Properties | Melt Flow Rate(MFR) | 25.43 g/10min | GB/T 3682 | High‑flow random‑copolymer PP |
| Isotactic Index | 96.4 % | GB/T 2412 | ‑ | |
| Yellow Index | ‑1.9 △Y.I. | GB/T 3862 | ‑ | |
| Powder Ash Content | 120 ppm | ‑ | ‑ | |
| Mechanical Properties | Tensile Strength | 40‑60 MPa (typical PP range) | GB/T 1040 | ‑ |
| Impact Strength | Can be improved by blending modification | ‑ | ‑ | |
| Thermal Properties | Melting Point | 165‑175℃ (typical PP range) | ‑ | ‑ |
Processing Parameters
| Processing Item | Reference Range (General PP) | Remarks for Y26SY high‑flow feature |
|---|---|---|
| Drying Treatment | Normally not required | PP features extremely low water‑absorption. Dry at 80 ℃ for 1 h under poor storage condition. |
| Barrel Temperature | 180‑260℃ | Homopolymer PP melting point:165‑170℃. Adopt relatively low temperature setting for high‑flow grade to avoid shear‑thermal degradation. Zone setup example: rear 30‑50℃；Zone1:160‑250℃；Zone2:200‑300℃；Zone3:220‑300℃；Zone4:220‑300℃；Zone5:220‑300℃；Nozzle:220‑300℃. |
| Mold Temperature | 20‑70℃ | Recommended:40‑60℃. Higher mold temperature improves surface gloss and dimensional stability; lower mold temperature shortens molding cycle. |
| Injection Pressure | 80‑140 MPa | Reduce injection pressure appropriately due to excellent flowability to prevent flash. Up to 180 MPa for thin‑wall packaging containers. |
| Injection Speed | Medium‑high speed | High injection speed can take advantage of high flowability, pay attention to gas marks and weld‑lines and adjust on‑site. High‑speed injection is required for thin‑wall packaging containers. |
| Holding Pressure | 30%‑60% of injection pressure | Sufficient holding pressure reduces shrinkage and sink marks. Avoid excessive holding time to prevent high internal stress, approx. 30% of total cycle time. |
| Back Pressure | 5‑20 MPa | Proper back‑pressure improves melt homogenization and venting. Too low back‑pressure causes unstable part weight and uneven color dispersion. |
| Screw Speed | High speed permitted | High screw speed(linear velocity 1.3 m/s) is acceptable on condition that plasticizing completes before cooling phase. Avoid excessive screw speed to prevent shear overheating. |
Disclaimer: All above data is for reference only.
