Rare-earth noctilucent plastic injection molded part and its making method

Abstract

The invention discloses a rare-earth noctilucent plastic injection molded part. The rare-earth noctilucent plastic injection molded part comprises 60-90wt% of an injection-moldable plastic, 6-10wt% of a flexibilizer, 3-35wt% of rare-earth noctilucent powder, 0.1-0.5wt% of an anti-ultraviolet agent, 0.1-0.5wt% of an antioxidant, 0.1-2wt% of other assistants, and 0.02-2wt% of a paint. A novel rare-earth noctilucent plastic section bar is a sheet, and comprises the injection molded part and a paint film, and the paint film is obtained through spray-coating the paint on the unidirectional side of the inner concave surface of the injection molded part, and has a uniform thickness. The prepared plastic section bar has a good luminescent characteristic because of the adoption of the environmentally-friendly, safe and nontoxic rare-earth alkaline-earth aluminate type long-acting noctilucent powder long-afterglow luminescent material. The novel rare-earth noctilucent plastic section bar has the characteristics of long continuous luminescence time, high luminescence brightness, stable luminescence and the like. The possessing of the color-adjustable paint film makes the paint film be seen from all the surfaces except the oil paint film spray-coating surface of the novel rare-earth noctilucent plastic section bar. The original specific physical and chemical performances of the injection-moldable plastic are guaranteed.

Description

technical field [0001] The invention relates to the field of polymer technology and rare earth application technology, in particular to a rare earth luminous plastic injection molded part and a manufacturing method thereof. Background technique [0002] Polystyrene, the English name is Polystyrene, referred to as PS. It refers to the polymer synthesized by styrene monomer through free radical polycondensation reaction, and the general formula is [(CH2CHC6H5)n]. The glass transition temperature is 80-90°C, the amorphous density is 1.04-1.06 g / cm3, the crystal density is 1.11-1.12 g / cubic cm, the melting temperature is 240°C, the resistivity is 1020-1022 ohm cm, and the thermal conductivity is 30°C 0.116 W / (m·Kelvin). [0003] The usual polystyrene is an amorphous random polymer with excellent heat insulation, insulation and transparency, the light transmittance can reach more than 90%, and the long-term use temperature is 0-70°C. There are also isotactic and syndiotactic p...

AI Technical Summary

Problems solved by technology

The traditional luminous plastic technical solutions are mostly coated with luminous paint on the surface of plastic products or materials, or general-purpose plastics that are convenient for injection molding processing, and added with luminous powder that has environmental defects as the matrix and prepared by injection molding. The afterglow time and intensity of the luminescence are difficult to meet the actual needs, and the selected plastic materials have ordinary properties and are often applicable to small areas, which are not suitable for high-precision toys, advertising displays, engineering applications, etc.