PP ZRCC M30RH
PP Zhenhai Refining & Chemical M30RH Resin
Material Introduction: PP Zhenhai Refining & Chemical M30RH is high‑melt‑flow, high‑impact block‑copolymer polypropylene. It combines excellent flowability, good rigidity and balanced impact resistance for wide‑range applications.
Main Applications
Home appliances: washing machine inner‑outer tubs, bases, cover plates and other components (classic application field).
Automotive parts: PP modified compounds, interior trim parts.
Industrial components: fitness equipment, electrical components.
Daily consumer goods: general‑purpose packaging, furniture, toys.
Performance Parameters
| Performance Category | Test Item | Test Condition | Reference Value | Unit | Reference Standard | Remarks & Interpretation |
|---|---|---|---|---|---|---|
| Basic Properties | Melt Mass‑Flow Rate(MFR) | 230℃/2.16kg | 30±5.0 | g/10 min | GB/T 3682 | High‑flow block‑PP for injection molding. |
| Ash content | mass fraction | 0.026 | % | GB/T 9345.1 | ‑ | |
| Mechanical Properties | Tensile Yield Stress | ‑ | 23.2 (≥21.5) | MPa | GB/T 1040.2 | Tensile yield performance. |
| Flexural Modulus | ‑ | 1180 (≥1100) | MPa | GB/T 9341 | Rigidity index. | |
| Charpy Notched Impact Strength | 23℃ | 8.8 (≥8.0) | kJ/m² | GB/T 1043.1 | Room‑temperature impact resistance. | |
| Charpy Notched Impact Strength | -20℃ | 4.5 | kJ/m² | GB/T 1043.1 | Low‑temperature toughness. | |
| Rockwell Hardness | R‑scale | 87 | ‑ | GB/T 3398.2 | Surface hardness. | |
| Thermal Properties | Heat‑Distortion Temperature(HDT) | 0.45 MPa, non‑annealed | 80 | ℃ | GB/T 1634.2 | Heat‑resistance reference. |
| Other Properties | Molding shrinkage(parallel) | ‑ | 1.0 | % | GB/T 17037.4 | Mold design reference. |
| Molding shrinkage(perpendicular) | ‑ | 0.8 | % | GB/T 17037.4 | ‑ | |
| Pellet appearance(colored pellet) | ‑ | 0 | pcs/kg | SH/T 1541 | High‑quality pellet grade. | |
| Pellet appearance(over‑size & fine pellet) | ‑ | 1 | g/kg | SH/T 1541 | ‑ |
Injection‑Molding Process Parameters
| Process Item | Suggested Range / Description | Remarks |
|---|---|---|
| Drying treatment | Normally unnecessary; dry at 80℃ for about 1 h if damp | Low moisture absorption of PP. |
| Barrel feed zone | 160‑250℃ (recommended 200℃) | Prevent thermal degradation. |
| Barrel compression zone | 200‑300℃ (recommended 220℃) | ‑ |
| Barrel metering zone | 220‑300℃ (recommended 240℃) | ‑ |
| Nozzle temperature | 220‑300℃ (recommended 240℃) | ‑ |
| Melt temperature | 220‑280℃ | Do not exceed 275℃. |
| Mold temperature | 20‑70℃ (recommended 50℃) | Crystallization depends on mold temperature. Low temp: poor surface, weld‑line & flow‑mark risk; High temp: warpage tendency. |
| Injection pressure | 80‑140 MPa(800‑1400 bar); up to 180 MPa(1800 bar) for thin‑wall packaging | Good flowability, avoid excessive injection pressure. |
| Holding pressure | 30%‑60% of injection pressure | Prevent sink mark; holding time accounts for ~30% of cycle time. |
| Back pressure | 5‑20 MPa(50‑200 bar) | ‑ |
| Injection speed | High‑speed with accumulator for thin‑wall containers; medium speed for common plastic parts. | ‑ |
| Screw speed | High screw speed(linear velocity 1.3 m/s) is permitted, complete plasticization before cooling ends. | Avoid excessive shear heat leading to material degradation. |
| Runner & gate | Pin‑point gate / multi‑point gate; hot runner systems(heated / insulated) and inner sprue sleeve are applicable. Gate shall locate at the thickest section of part to minimize shrinkage. | ‑ |
Disclaimer: All above data is for reference only.
