Formula composition Parts by mass Resin PS 100 Compatibilizer HPB-g-PS 10 LDPE Tensile Strength 20.8～23.6MPa Elongation at break 4.5% to 5.8% Impact strength 12.5~14.3 J/m Formula composition Parts by mass Resin PS 43 Reinforcing agent glass fiber (10-20μm) 11 PBT ( L2100) 16 Flame retardant tris(tri-bromophenyl) cyanurate (FR245) 11 Composite toughener 10 Anti-drip agent styrene-acrylonitrile resin coated polytetrafluoroethylene (SN3300) 0.8 Antioxidant ( Ultranox626) 0.2 Compatibilizer styrene-maleic anhydride copolymer (SMA218) 8 Tensile Strength 112MPa Bending strength 167MPa Vertical flammability UL-94 V-0 The material has excellent strength and toughness, and has good flame retardant performance, and has broad application prospects in fields such as electrical and electronic equipment. Formula composition Parts by mass Resin PS 100 Nucleating agent CaCO3 2.5 Blowing agent AC 0.7 Lubricant HSt 0.4 Crosslinker DCP 0.15 Pigment brown purple 1-2 Ethanolamine 0.1 density 0.1 to 0.4 g/cm3 PS micro-foamed wood-like board, its appearance and internal quality resemble wood, the material can be nailed, sawed and planed. The surface is smooth, light and has a certain rigidity. Formula composition Parts by mass Resin HIPS 100 Nucleating agent CaCO3 2.5 Foaming agent EVA foam masterbatch 2-3 Lubricant HSt 0.2 Crosslinker DCP 0.2 Formula composition Parts by mass Resin PS 100 Flame retardant bis(dibromopropyl)phosphate 3 Toughener polybutadiene rubber 8 Sb2O3 3 Oxygen Index ≥26% Combustion performance UL-94 V-0 Tensile Strength 22～26MPa Bending strength 34～38MPa Elongation at break 1.8% to 2.1% Impact strength 11～15kJ/m2 Heat distortion temperature (1.82MPa) 89～100°C Formula composition Parts by mass Resin HIPS 100 Coupling agent KR-212 0.5 Flame retardant Al(OH)3 50 Toughener SEBS 5 Mg(OH)2 10 Lubricant HSt 0.5 Coated red phosphorus 3 Oxygen Index 27% to 29% Combustion performance is self-extinguishing UL-94 V-0 Tensile Strength 38～42MPa Bending strength 50～60MPa Elongation at break 1.0% to 2.0% Notched impact strength (23 ° C) 45~55 J/m Heat distortion temperature (at 1.82MPa load) 100～110°C
2. Flame retardant reinforced and toughened PS/PBT blend alloy material
Process control:
3, PS foam
Process control:
4, low foaming HIPS plastic paper
Process control:
5, PS flame retardant
Process control:
6, halogen-free flame retardant modified HIPS
PS modified formula summary
1, PS blending
PS/LDPE blending modified material:
Process control:
The PS was stirred at a constant temperature for 5 min in a high speed mixer at an extrusion temperature of 160-165 °C.
Material properties:
Extruder L / D is 40, extruder barrel temperature: 180 ~ 190 ° C in one zone, 200 ~ 210 ° C in the second zone, 220 ~ 230 ° C in the three zones; 210 ° C temperature in the head; screw speed 350 ~ 450r / min .
Material properties:
PS micro foamed wood plastic:
PS is mixed and stirred in a high-speed mixer for 5 to 10 minutes, the mixing temperature is 100-110 ° C, the second extrusion foaming is preferably low-temperature extrusion, and the temperature of each group of the barrel is controlled within the range of 100-185 ° C; the screw rotation speed is 40 ~ 50r / min.
Material properties:
The extruder L/D is 25; the temperature of each section of the barrel: 100-120 °C in one zone, 130-145 °C in the second zone, 115-130 °C in the third zone; the temperature of the head is 90-130 °C.
Material properties:
The EVA foaming masterbatch is a product extruded by a foaming agent, which has uniform cells, good surface gloss, low density and good mechanical properties, and is widely used for propaganda paper, food trays, boxes and products thereof.
General purpose PS flame retardant modification:
The extruder L/D ≥ 28, the cylinder temperature is controlled at 170 ~ 200 ° C, the screw speed is 80 ~ 100r / min.
Material properties:
Process control:
The mixture was stirred for 5 to 10 minutes, and was put into a twin-screw extruder for melt extrusion. The extruder screw L/D ≥ 25, the extrusion temperature was 170 to 200 ° C, and the screw rotation speed was 100 to 140 r/min.
Material properties: