ABS High-Rubber Powder B68
High-Rubber Powder/SAN (Dagu AS 106): 25/75
Properties | Test Conditions | Unit | Test Method | Specification | Typical Value |
Test Condition | Unit | Test Method | Standard
Requirements | Typical Value |
Physical Properties |
Specific Gravity | 23°C | g/cc | D792 | ≥1.03 | 1.038 |
Melt Mass Flow Rate | 220°C, 10 kg | g/10 min | D1238 | >15 | 30 |
Mechanical Properties |
Notched Izod Impact Strength | 1/8", 23°C | kJ/m² | D256 | ≥20 | 22 |
Tensile Strength at Break | 50 mm/min | MPa | D638 | ≥45 | 48 |
Rockwell Hardness | 750 g | R | D785 | ≥100 | 105 |
Flexural Strength | 50 mm/min | MPa | D790 | ≥60 | 65 |
Flexural Modulus | 50 mm/min | MPa | D790 | ≥1950 | 2300 |
II. Application Areas
1. General-Purpose ABS: The high-rubber powder can be directly blended with SAN and pelletized to produce general-purpose ABS. Their acrylonitrile contents are well matched, ensuring excellent compatibility in accordance with the principle of like dissolves like. The typical blending ratio is 20–25:80–75, which can achieve the desired physical properties. Other additives should be incorporated at conventional dosage levels, including approximately 0.5–1 part of EBS lubricant and approximately 0.3 part of antioxidant.
2. Modified ABS Products: Similar to general-purpose ABS production, ABS high-rubber powder needs to be blended with SAN. The main difference is that additional additives are incorporated during blending. For example, flame-retardant ABS requires the addition of flame retardants and flame-retardant synergists. A typical formulation consists of 25%–35% ABS powder and 70%–60% SAN, flame retardants, and other additives. High-rubber powder can also be added when producing heat-resistant ABS and glass-fiber-reinforced ABS.
3. Toughening of Recycled ABS, Recycled PC/ABS, and PVC Applications: Whether virgin or recycled materials are used, impact strength is largely provided by the rubber component. In recycled materials, aging of the butadiene component in the rubber phase can significantly reduce impact strength. Adding high-rubber powder can help restore and improve the impact strength of these materials.