PP‑R Daqing PA14D
PP‑R Daqing Refining & Chemical PA14D Resin
Material Introduction: PP‑R Daqing Refining & Chemical PA14D is random‑copolymer polypropylene mainly for pipe application, especially suitable for cold‑hot‑water piping systems. It features good long‑term heat‑resistant & pressure‑resistant performance, excellent impact strength, favorable processability and environmental‑friendly safety.
Main Applications
Building cold‑hot‑water transmission systems: core application for domestic cold‑hot‑water pipelines.
Industrial piping systems: conveyance of certain chemical media.
Other piping applications: solar heating facilities, air‑conditioning system pipelines.
Performance Parameters
| Performance Category | Test Item | Test Condition | Test Method | Typical Value | Unit | Remarks & Interpretation |
|---|---|---|---|---|---|---|
| Basic Properties | Melt Flow Rate (MFR) | 230℃/2.16kg | ASTM D1238 | 0.33 | g/10min | Low‑flow grade for pipe extrusion. |
| Mechanical Properties | Tensile Strength | ‑ | ASTM D638 | 27.2 | MPa | Tensile mechanical property. |
| Flexural Modulus | ‑ | ASTM D790 | 78.6 | MPa | Material rigidity index. | |
| Notched IZOD Impact Strength | ‑ | ‑ | 3.9 | kj/cm² | Impact resistance performance. | |
| Other Properties | Cleanness(Color Particles) | ‑ | ‑ | 3 | pcs/kg | Raw material impurity index. |
| Yellow Index | ‑ | ‑ | 0.3 | ‑ | Color‑stability evaluation. |
Pipe Extrusion Process Parameters
- Barrel temperature: feed zone 160
250℃, nozzle zone 220300℃ - Melt temperature: typical 220‑280℃
- Mold temperature: 20‑70℃
Injection‑Molding Process Parameters
- Barrel temperature：160
300℃（from feed zone to nozzle），typical melt temperature 220280℃。 - Mold temperature：20‑70℃. Higher mold temperature improves surface gloss and dimensional stability.
- Injection pressure：80‑140 MPa（800‑1400 bar）, avoid excessive pressure; up to 180 MPa（1800 bar） for thin‑wall packaging containers.
- Holding pressure：30%‑60% of injection pressure.
- Back pressure：5‑20 MPa（50‑200 bar）.
- Injection speed：high speed for thin‑wall packaging containers; medium speed for other plastic products.
- Screw speed：high rotational speed with linear velocity up to 1.3 m/s is permitted, ensure plasticization finished before cooling cycle ends.
- Drying treatment：pre‑drying unnecessary under good storage; dry at 80℃ for 1 h under poor storage condition.
Disclaimer: All above data is for reference only.
