Long-afterglow luminescent polypropylene composite material suitable for automotive upholstery and preparation method of long-afterglow luminescent polypropylene composite material
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A long afterglow luminescence technology, applied in the field of polymer material processing and modification, can solve the problem of no advantage in the light transmittance of block copolymerized PP, and achieve reduced light transmittance loss, long afterglow time, and improved Dimensional Stability and Rigidity Effects
Pending Publication Date: 2022-04-22
CHONGQNG PRET NEW MATERIAL +3
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[0003] Polypropylene (PP) is the main material for automotive interior parts, and block copolymerized PP is mainly used, but block copolymerized PP has no advantage in light transmittance
Method used
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Embodiment 1
[0035] (1) Weigh 36.5% of homopolypropylene, 25% of random copolymer polypropylene, 25% of propylene-ethylene copolymer toughening agent, 5% of nano talcpowder, 6% of long afterglow luminescent powder, Negonox DSTP 0.3 %, Irganox 10100.1%, Irgafos 168 0.1%, and compatibilizer 2%, were dry mixed in a high-speed mixer for 8 minutes to obtain a premix.
[0036] (2) Put the premix into the twin-screw extruder from the main feeding port of the screw, and cool and granulate after melting and extruding. -220°C, four zone 205-215°C; residence time 1-2min, pressure 12-18MPa.
Embodiment 2
[0038] (1) Weigh 36.5% of homopolypropylene, 25% of random copolymerized polypropylene, 25% of propylene-ethylene copolymer toughening agent, 6% of long afterglow luminescent powder, 0.3% of Negonox DSTP, 0.1% of Irganox 1010 , Irgafos168 0.1%, and compatibilizer 2% were dry mixed in a high-speed mixer for 8 minutes to obtain a premix.
[0039] (2) Add the premix into the twin-screw extruder from the main feeding port of the screw, and add glass fiber (5%) from the middle of the screw to the side feeding port into the twin-screw extruder, and cool it after melt extrusion Granules, the process is: first zone 190-200°C, second zone 200-210°C, third zone 210-220°C, fourth zone 205-215°C; residence time 1-2min, pressure 12-18MPa.
Embodiment 3
[0041] (1) Weigh 31.5% of homopolypropylene, 25% of random copolymer polypropylene, 25% of propylene-ethylene copolymer toughening agent, 5% of nano talc powder, 6% of long afterglow luminous powder, Negonox DSTP 0.3 by weight percentage %, Irganox 10100.1%, Irgafos 168 0.1%, and compatibilizer 2%, were dry mixed in a high-speed mixer for 8 minutes to obtain a premix.
[0042] (2) Add the premix into the twin-screw extruder from the main feeding port of the screw, and add glass fiber (5%) from the middle of the screw to the side feeding port into the twin-screw extruder, and cool it after melt extrusion Granules, the process is: first zone 190-200°C, second zone 200-210°C, third zone 210-220°C, fourth zone 205-215°C; residence time 1-2min, pressure 12-18MPa.
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Abstract
The invention discloses a long-afterglow luminous polypropylenecomposite material suitable for automotive upholstery and a preparation method of the long-afterglow luminous polypropylenecomposite material. The composite material is composed of the following raw materials in percentage by weight: 10-65% of homo-polypropylene; 0-45% of polypropylene random copolymer; 5-40% of a propylene-ethylenecopolymertoughening agent; 0-10% of a nano inorganic filler; 0-15% of glass fiber; 2-10% of long afterglow luminescent powder; 0.1-2% of a stabilizer; and 0-5% of other additives. In the aspect of polypropylene raw materials, high-light-transmittance homopolymerized polypropylene and high-light-transmittance polypropylene random copolymer are used for replacing traditional block copolymerized polypropylene, so that the light transmittance upper limit allowed by the composite material is improved. The propylene-ethylene copolymer flexibilizer improves the toughness of the material on one hand, and on the other hand, as the chemical composition of the flexibilizer is close to that of polypropylene, the refractive index of the flexibilizer is matched with that of the polypropylene, so that the light transmittance loss caused by mismatching of the refractive indexes of the components is reduced. The nanoscale inorganic filler and the transparent glass fiber are used for improving the dimensional stability and rigidity of the material, and meanwhile, the influence on the light transmittance performance of the material can be reduced as much as possible.
Description
technical field [0001] The invention relates to a polypropylene composite material and a preparation method thereof. The obtained material has good transmittance to visible light and long afterglow luminescence characteristics, and belongs to the technical field of polymer material processing and modification. Background technique [0002] The main function of the car ambient light is to create an atmosphere in the car under dark conditions, making the passenger compartment more luxurious and technological. However, ambient lights rely on lighting components, which means that the design and placement of ambient lights must take into account the circuit routing, so there are restrictions on the choice of location. Long afterglow luminescent materials, also known as luminous materials, can store part of the light energy when irradiated by excited light, and release the energy slowly in the form of light after the excitation stops, and the afterglow lasts up to tens of hours. ...
Claims
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