AS LG Chem 80HF
AS LG Chem 80HF
Product Introduction AS LG Chem 80HF is a high‑transparency, high‑flow AS (acrylonitrile‑styrene copolymer) resin. It features high rigidity, transparency and excellent processability, coupled with good chemical and thermal stability.
Main Applications
Daily‑use Articles & Food Containers: Refrigerator internal fruit‑vegetable boxes, food containers, sealing cans, food boxes, tableware such as food‑grade cutlery, cosmetic packaging, pen housings e.g. ball‑point pen shells, lighter housings, etc. Its transparency and potential food‑contact compliance (subject to specific certification) make it well‑suited for these applications.
Electronic, Electrical & Household‑Appliance Components: TV bases, cassette cases, electrical sockets, housings, transparent panels for electrical products, turntable covers, electric‑fan blades, storage‑battery enclosures, junction boxes, etc. Reliable electrical insulation performance and mechanical strength meet component requirements.
Automotive Industry: Used for manufacturing automotive parts such as head‑lamp housings, reflectors, instrument panels.
General Industrial Components: Instrument casings, dashboards, battery boxes, toys, lighting fixtures such as head‑lamp housings and reflectors. High transparency and good moldability fit various industrial scenarios.
Performance Parameters
| Property Category | Test Item | Typical Value | Test Standard (Reference) |
|---|---|---|---|
| Physical Properties | Density | 1.07 g/cm³ | ASTM D792 |
| Melt Flow Rate (MFR) | 2.5 g/10min (220°C/5kg) or 25 g/10min (220°C/10kg) | ASTM D1238 | |
| Molding Shrinkage | 0.2‑0.6 % | ASTM D955 | |
| Mechanical Properties | Tensile Strength | 70 MPa | ASTM D638 |
| Flexural Strength | 120 MPa | ASTM D790 | |
| Flexural Modulus | 3400 MPa | ASTM D790 | |
| Izod Notched Impact Strength | 0.015‑0.02 kJ/m² | ASTM D256 | |
| Rockwell Hardness (R‑Scale) | 122 | ASTM D785 | |
| Elongation at Break | 6 % | ASTM D638 | |
| Thermal Properties | Heat‑Deflection Temperature (HDT) @1.82 MPa | 89 °C | ASTM D648 |
| Vicat Softening Temperature | 107 °C | ASTM D1525 | |
| Other Properties | Flammability Rating (UL 94) | HB | 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 0.01% recommended), otherwise silver streaks and bubbles may appear on molded‑part surfaces. |
| Barrel Temperature | Rear zone:170‑190℃ or 160‑210℃ Middle zone:180‑200℃ Front zone:190‑210℃ or 160‑210℃ Nozzle:190‑220℃ |
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| Melt Processing Temperature | 190‑220 °C | ‑ |
| Mold Temperature | 40.0‑70.0℃ or 40‑60℃ | 50‑60°C for high‑precision molded parts; 60‑80°C for high‑gloss and heat‑resistant parts. |
| Injection Pressure | 50‑70 kg/cm² | Adjust according to flow length and product structure. AS exhibits slightly lower flowability than PS, hence relatively higher injection pressure is required. |
| Holding Pressure | 40‑60 kg/cm² (approx.30%‑60% of injection pressure) | Optimize according to wall thickness and product structure to reduce internal stress and shrinkage. |
| Injection Speed | High‑speed injection | Delivers good surface gloss, color performance and minimizes weld‑lines. |
| Back Pressure | 5‑15 kg/cm² or 29.4‑58.8 MPa | Moderate back‑pressure ensures uniform plasticization and degassing. Insufficient back‑pressure may trap air and cause internal defects in molded articles. |
| Screw Speed | 30‑60 rpm | Ensure uniform plasticization only. |
Note: All data above is for reference only.
