AS LG Chem 82TR
AS LG Chem 82TR
Product Introduction AS LG Chem 82TR is a high‑transparency, high‑flow acrylonitrile‑styrene copolymer (SAN) resin. It features good rigidity, heat resistance, chemical resistance and excellent processability.
Main Applications
Daily‑use Articles & Food Containers: Refrigerator internal fruit‑vegetable boxes, food containers, food boxes, tableware such as food‑grade cutlery, cosmetic packaging, pen housings e.g. ball‑point pen shells, lighter housings, trash bins, toothbrush handles, 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, cold‑water reservoirs for coffee makers, etc. Favorable electrical insulation performance and mechanical strength meet component requirements.
Automotive Industry: Used for manufacturing automotive parts.
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 Condition / Standard |
|---|---|---|---|
| Physical Properties | Density | 1.07 g/cm³ | ASTM D792 |
| Melt Flow Rate (MFR) | 4.0 g/10min | 200°C /5 kg, ASTM D1238 | |
| Melt Flow Rate (MFR) | 40 g/10min | 220°C /10 kg, ASTM D1238 | |
| Molding Shrinkage | 0.2‑0.6 % or 0.4‑0.7 % | ASTM D955 | |
| Saturated Water Absorption | 0.14 % | ISO 62 | |
| Mechanical Properties | Tensile Strength (Yield) | 66.7 MPa or 700 kg/cm² | ASTM D638 |
| Flexural Strength (Yield) | 108 MPa or 12000 kg/cm² | ASTM D790 | |
| Flexural Modulus | 3600 MPa or 34000 kg/cm² | ASTM D790 | |
| Izod Notched Impact Strength | 1.5 kg·cm/cm (1/4") | ASTM D256 | |
| Rockwell Hardness (R‑Scale) | 122 R or 124 R | ASTM D785 | |
| Elongation at Break | 6.0 % | ASTM D638 | |
| Thermal Properties | Heat‑Deflection Temperature (HDT) | 89‑90.0 °C | ASTM D648, 1.82 MPa (18.5 kg/cm²), un‑annealed, 6.35 mm /1/4" specimen |
| Vicat Softening Temperature | 101‑107 °C | ASTM D1525 (1000g) | |
| Glass‑Transition Temperature | 110 °C | ISO 11357‑2 | |
| Other Properties | Flammability Rating (UL 94) | HB (1.59 mm, 3.18 mm) | UL 94 |
| Relative Temperature Index (RTI) | 50.0 °C | UL 746 |
Injection‑Molding Parameters
| Process Parameter | Reference Range | Remarks & Instructions |
|---|---|---|
| Drying Treatment | 80.0‑90.0 °C, 2.0‑4.0 hours | AS resin is hygroscopic. Sufficient drying is required (moisture content below 0.1% recommended), otherwise silver streaks and bubbles may occur on molded‑part surfaces. |
| Barrel Temperature | Rear zone:170‑190℃ (reference) Middle zone:180‑200℃ (reference) Front zone:190‑210℃ (reference) Nozzle:190‑220℃ (reference) |
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| Melt Processing Temperature | 190‑230 °C | ‑ |
| Mold Temperature | 40.0‑80.0℃ | 50‑60°C for high‑precision molded parts; 60‑80°C for high‑gloss and heat‑resistant parts. |
| Injection Pressure | Adjust according to flow length and product structure | AS exhibits slightly lower flowability than PS, hence relatively higher injection pressure is required. |
| Holding Pressure | 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 | Moderate back‑pressure | Ensures uniform plasticization and degassing. Insufficient back‑pressure may trap air and cause internal defects in molded articles. |
| Screw Speed | Adjust to ensure uniform plasticization only | ‑ |
Note: All data above is for reference only.
