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High thermal conductivity halogen-free flame-retardant syndiotactic polystyrene composite material and preparation method thereof
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A polystyrene and composite material technology, applied in the field of polymer material manufacturing, can solve the problems of high cost of LED lamps, restrictions on wide use and high cost
Active Publication Date: 2022-01-25
PENGYUN ENG PLASTICS GUANGZHOU
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Since the metal aluminum bracket can only be machined individually, the cost is high, resulting in a relatively high cost of the entire LED lamp
Due to the high processing cost and material cost of lamps, even if LED lamps are energy-saving and environmentally friendly, their widespread use is limited.
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Embodiment 1
[0017] 30Kg syndiotactic polystyrene, 5Kg siliconcarbide, 5Kg aluminum nitride, 0.1Kg antioxidant 1010, 0.1Kg coupling agent KH-550, 0.2Kg lubricant PETS, 0.5Kg compatibilizer PS-g-MAH, 10Kg of magnesiumhydroxide and 5Kg of nano-montmorillonite were put into a mixer and stirred for 10 minutes, and the stirring speed was set at 150 rpm to obtain a mixture.
[0018] Put the mixture into a twin-screw extruder to melt, knead, extrude, cool, and dry to obtain a high thermal conductivity halogen-free flame-retardant syndiotactic polystyrene composite resin. The set temperature of the twin-screw extruder is 270-290° C., the screw speed is set at 300 rpm, and the feeding speed is set at 120 rpm.
[0019] Among them, the ratio of each component in parts by weight can be: syndiotactic polystyrene 30-60, siliconcarbide 5-20, aluminum nitride 5-20, halogen-free flame retardant 15-30, antioxidant 0.1~1, coupling agent 0.1~1, compatibilizer 0.5~5, lubricant 0.2~2.
[0020] After testin...
Embodiment 21
[0022] Step (1) 30Kg syndiotactic polystyrene, 5Kg silicon carbide, 5Kg aluminum nitride, 0.1Kg antioxidant 1010, 0.1Kg coupling agent KH-550, 0.2Kg lubricant PETS, 0.5Kg compatibilizer PS- g-MAH, 10Kg magnesiumhydroxide and 5Kg nano-montmorillonite were put into a mixer and stirred for 10 minutes, and the stirring speed was set at 150 rpm to obtain a mixture 1.
[0023] Step (2) Add 30Kg of syndiotactic polystyrene to the mixture 1, and stir for another 20 minutes with the stirring speed set at 500 rpm to obtain the mixture 2.
[0024] Step (3) Put the mixture 2 into a twin-screw extruder to melt, knead, extrude, cool and dry. The set temperature of the twin-screw extruder is 270-290° C., the screw speed is set at 300 rpm, and the feeding speed is set at 120 rpm. Low screw speed can make the material stay longer and plasticize better.
[0025] Among them, the ratio of each component in parts by weight can be: syndiotactic polystyrene 30-60, silicon carbide 5-20, aluminum n...
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technical field [0001] The invention belongs to the field of polymer material manufacturing, and in particular relates to a high thermal conductivity halogen-free flame-retardant syndiotactic polystyrene composite material and a preparation method thereof. Background technique [0002] Light-emitting diodes (LEDs) are widely used as lighting sources at present. They are power-saving and have high luminous efficiency. However, LEDs generate high heat during operation, and rapid heat dissipation is required to ensure the normal service life of LEDs. Usually, the brackets on the lamps that are in contact with the LEDs and play a role in heat dissipation are all made of metal materials, especially metal aluminum. Since the metal aluminum bracket can only be machined individually, the cost is high, resulting in a relatively high cost of the entire LED lamp. Due to the high processing cost and material cost of lamps, even if LED lamps are energy-saving and environmentally friendl...
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