AS Formosa Plastics Ningbo NF2200
AS Formosa Plastics Ningbo NF2200
Product Introduction AS Ningbo Formosa Plastics NF2200 is a high‑flow, high‑transparency acrylonitrile‑styrene copolymer (SAN) resin. It features good rigidity, heat resistance and excellent processability.
Main Applications
Daily‑use Articles: Audio‑cassette cases, lighter housings, trash bins, toothbrush handles, pen barrels, cups, tableware, cosmetic packaging, etc.
Electronic, Electrical & Household‑Appliance Components: Transparent panels for electrical products, instrument casings, dashboards, battery boxes, storage‑battery enclosures, junction boxes, electric‑fan blades and other parts.
General Industrial Components: Tractor fuel tanks, packaging containers, lamp shades, building‑material products such as decorative panels.
Other Applications: Also used for certain non‑structural interior parts in the automotive industry.
Performance Parameters
| Property Category | Test Item | Typical Value | Test Condition / Standard |
|---|---|---|---|
| Physical Properties | Density | 1.07 g/cm³ | ASTM D792, 23℃ |
| Melt Flow Rate (MFR) | 2.6 g/10min | 200°C /5 kg, ASTM D1238 | |
| Melt Flow Rate (MFR) | 26 g/10min | 220°C /10 kg, ASTM D1238 | |
| Molding Shrinkage | 0.2‑0.6 % | ASTM D955 | |
| Mechanical Properties | Tensile Strength | 71 MPa (720 kg/cm²) | ASTM D638, 23℃ |
| Flexural Strength | 94 MPa (960 kg/cm²) | ASTM D790, 23℃ | |
| Flexural Modulus | 3330 MPa (34000 kg/cm²) | ASTM D790, 23℃ | |
| Izod Notched Impact Strength | 1.7‑2.1 kg·cm/cm or 17‑21 J/m | ASTM D256, 23℃, 1/4" thickness | |
| Rockwell Hardness (R‑Scale) | M‑80 or 80 M | ASTM D785, 23℃ | |
| Thermal Properties | Heat‑Deflection Temperature (HDT) | 90 °C | ASTM D648, 1.82 MPa (18.6 kg/cm²), un‑annealed |
| Vicat Softening Temperature | ‑ | ‑ | |
| Other Properties | Flammability Rating (UL 94) | HB (1/16") | UL 94 |
Injection‑Molding Parameters
| Process Parameter | Reference Range | Remarks & Instructions |
|---|---|---|
| Drying Treatment | 80°C, 2‑4 hours | AS resin is hygroscopic. Sufficient drying is required (moisture content below 0.1% recommended), otherwise silver streaks and bubbles may occur on finished‑part surfaces. |
| Barrel Temperature | Rear zone:180‑210℃ (reference) Middle zone:200‑230℃ (reference) Front zone:220‑250℃ (reference) Nozzle: Slightly lower than front‑zone temperature to prevent drooling |
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| Melt Processing Temperature | 200‑250 °C | Slightly lower temperature can be adopted for thick‑wall products. |
| Mold Temperature | 40‑80℃ | 50‑60°C for high‑precision parts; 60‑80°C for high‑gloss and high‑heat‑resistance requirements. Mold temperature directly affects appearance, shrinkage and warpage of molded parts. |
| Injection Pressure | 70‑130 MPa (approx.700‑1300 kg/cm²) | Adjust according to flow length and product structure. AS has slightly lower flowability than PS, so relatively higher injection pressure is needed. |
| Holding Pressure | 30%‑60% of injection pressure | Optimize according to wall thickness and product structure to reduce internal stress and shrinkage. |
| Injection Speed | High‑speed injection | Beneficial for good surface gloss, color performance and minimizing weld‑lines. |
| Back Pressure | Moderate back‑pressure (e.g.10‑20 MPa) | Ensures uniform plasticization and degassing. Insufficient back‑pressure may trap air and cause internal defects in molded articles. |
| Screw Speed | Medium speed (e.g.50‑80 rpm) | Sufficient for uniform plasticization; excessive speed shall be avoided to prevent shear overheating. |
Note: All data above is for reference only.
