List of PS Modified Formulas
Publish Time: 2024-10-07 Origin: Site
1. PS blending
PS/LDPE blend modified materials:
Formula | Mass percentage |
PS resin | 100 |
Compatibilizer HPB-g-PS | 10 |
LDPE | 20 |
Process:
PS is stirred in a high-speed mixer at a certain temperature for 5 minutes, and the extrusion temperature is 160-165°C.
Material properties:
Tensile Strength | 20.8～23.6MPa |
Elongation at break | 4.5%～5.8% |
Impact strength | 12.5～14.3 J/m |
2. Flame retardant reinforced toughened PS/PBT blended alloy material
Formula | Mass percentage |
PS resin | 43 |
Reinforcement fiberglass（10-20μm） | 11 |
PBT( L2100) | 16 |
Flame retardant tris(tris-bromophenyl)cyanurate (FR245) | 11 |
Compound toughener | 10 |
Anti-drip agent Styrene-acrylonitrile resin coated polytetrafluoroethylene (SN3300) | 0.8 |
Antioxidants( Ultranox626) | 0.2 |
Compatibilizer Styrene-maleic anhydride copolymer (SMA218) | 8 |
Process:
The extruder L/D is 40, the extruder barrel temperature is: 180~190℃ in the first zone, 200~210℃ in the second zone, 220~230℃ in the third zone; the machine head temperature is 210℃; the screw speed is 350~450r/min .
Material properties:
Tensile Strength | 112MPa |
Bending strength | 167MPa |
Vertical flammability | UL-94 V-0级 |
This material has excellent strength and toughness as well as good flame retardant properties, and has broad application prospects in electronic and electrical equipment and other fields. | |
3. PS flame retardant
General grade c:
Formula | Mass percentage |
PS resin | 100 |
Flame retardant bis(dibromopropyl)phosphate | 3 |
Toughening agent polybutadiene rubber | 8 |
Sb2O3 | 3 |
Process:
The extruder L/D≥28, the barrel temperature is controlled at 170~200℃, and the screw speed is 80~100r/min.
Material properties:
Oxygen Index | ≥26% |
Combustion performance | UL-94 V-0级 |
Tensile Strength | 22～26MPa |
Bending strength | 34～38MPa |
Elongation at break | 1.8%～2.1% |
Impact strength | 11～15kJ/m2 |
Heat distortion temperature (1.82MPa) | 89～100℃ |
4. Halogen-free flame retardant modified HIPS
Formula | Mass percentage |
HIPS resin | 100 |
Coupling agent KR-212 | 0.5 |
Flame retardant Al(OH)3 | 50 |
Toughening agent SEBS | 5 |
Mg(OH)2 | 10 |
Lubricant HSt | 0.5 |
Coated red phosphorus | 3 |
Process:
Stir the PS for 5 to 10 minutes, then put it into a twin-screw extruder for melting and extrusion. The extruder screw L/D is ≥ 25, the extrusion temperature is 170 to 200°C, and the screw speed is 100 to 140 r/min.
Material properties:
Oxygen Index | 27%～29% |
Combustion performance is self-extinguishing | UL-94 V-0级 |
Tensile Strength | 38～42MPa |
Bending strength | 50～60MPa |
Elongation at break | 1.0%～2.0% |
Notched impact strength is (23℃) | 45～55 J/m |
Heat distortion temperature (under 1.82MPa load) | 100～110℃ |
5. PS foaming
PS micro-foamed imitation wood plastic:
Formula | Mass percentage |
PS resin | 100 |
Nucleating agent CaCO3 | 2.5 |
Foaming agent AC | 0.7 |
Lubricant HSt | 0.4 |
Cross-linking agent DCP | 0.15 |
Pigment brown purple | 1-2 |
Regulator ethanolamine | 0.1 |
Process:
PS is mixed in a high-speed mixer for 5 to 10 minutes, and the mixing temperature is 100 to 110°C. The second extrusion foaming should be performed at low temperature. The temperature of each section of the barrel should be controlled within the range of 100-185°C; the screw speed should be 40-50r/min.
Material properties:
Density | 0.1～0.4 g/cm3 |
PS micro-foamed imitation wood panel has an appearance and inner quality similar to wood, and the material can be nailed, sawed, and planed. The surface is smooth, light and has certain rigidity. | |
6. Low foaming HIPS plastic paper
Formula | Mass percentage |
HIPS resin | 100 |
Nucleating agent CaCO3 | 2.5 |
Foaming agent EVA foaming masterbatch | 2-3 |
Lubricant HSt | 0.2 |
Cross-linking agent DCP | 0.2 |
Process：
The L/D of the extruder is 25; the temperature of each section of the barrel: 100~120℃ in the first zone, 130~145℃ in the second zone, 115-130℃ in the third zone; the temperature of the machine head is 90~130℃.
Material properties:
Products extruded using EVA foaming masterbatch as the foaming agent have uniform cells, good surface gloss, low density and good mechanical properties. They are widely used in promotional imitation paper, food trays, boxes and their products.
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