PBT Kanghui Petrochemical KH2083
PBT Kanghui Petrochemical KH2083
PBT Kanghui Petrochemical KH2083 is a well‑balanced, unreinforced, injection‑molding general‑purpose engineering plastic. Its main advantages include good toughness, excellent electrical performance, dimensional stability and fatigue resistance.
Main Applications
Automotive industry: automotive accessory manufacturing.
Electrical & Electronics: electronic‑electrical components.
Industrial machinery: mechanical spare‑parts.
Textile field: civil & industrial textiles, such as rabbit‑hair‑like fiber, Lycra‑like fiber.
Other fields: polymer alloy & blending industry, optical cables, wigs, eyelashes.
Physical‑Mechanical‑Thermal‑Chemical Properties
| Property Category | Property Item | Test Standard / Condition | Test Data / Range | Unit |
|---|---|---|---|---|
| Physical Properties | Density | KHS 001 | 1.30‑1.32 | g/cm³ |
| Intrinsic viscosity (IV) | GB/T 14190 | 0.830±0.012 | dL/g | |
| MFR (250 °C / 2.16 kg) | ISO 1133 | 75.0±5.0 | g/10 min | |
| MFR (235 °C / 2.16 kg) | ISO 1133 | 51.0±4.0 | g/10 min | |
| Water absorption | — | ≤0.2 | % | |
| Weight per 100 pellets | — | 2.00±0.10 | g | |
| Mechanical Properties | Tensile strength | ISO 527 | ≥55 | MPa |
| Elongation at break | ISO 527 | ≥40 | % | |
| Flexural strength | ISO 178 | ≥70 | MPa | |
| Izod notched impact strength | ISO 180 | ≥4.0 | kJ/m² | |
| Thermal Properties | Melting point | — | 224.0±2.0 (measured:223.1) | ℃ |
| Chemical Properties | Terminal carboxyl group content | — | 18±4.0 (measured:16.1) | mol/t |
| Color value L | — | ≥90 (measured:95.9) | — | |
| Color value b | — | 2.0±1.0 (measured:1.7) | — | |
| Ash content | — | ≤300 (measured:145) | mg/kg | |
| Moisture content | — | ≤0.2 (measured:0.05) | % |
Injection‑Molding Parameters
| Process Stage | Parameter Item | Reference Range / Recommendation | Unit / Remarks |
|---|---|---|---|
| Pre‑treatment | Drying temperature | 110‑130 | ℃ |
| Drying time | 3‑5 h (material bed thickness＜30 mm) | h | |
| Target moisture content | ＜0.02 | % | |
| Drying equipment | Desiccant dryer recommended | — | |
| Injection Molding | Rear barrel temperature | 210‑230 | ℃ |
| Middle barrel temperature | 230‑250 | ℃ | |
| Front barrel temperature | 240‑260 | ℃ | |
| Nozzle temperature | Slightly lower than or equal to front zone | ℃ | |
| Melt temperature | 240‑260 | ℃ | |
| Mold temperature | 60‑80 | ℃ | |
| Injection pressure | 50‑100 | MPa | |
| Injection speed | Medium | — | |
| Back pressure | 10‑15 % of injection pressure | MPa | |
| Screw speed | 40‑70 | rpm | |
| Mold | Runner type | Round runner recommended | — |
| Gate type | All gate types are applicable | — | |
| Mold cooling | Uniform temperature for all positions | — | |
| Post‑processing | Annealing (if required) | Reduce residual stress, improve dimensional stability | ℃ |
| Annealing time | Adjust according to wall thickness | h |
Note: All data above is for reference only.
