Carbon fiber-graphene filled flexible high thermal conductive insulating flame retardant plastic for LED and preparation method of plastic

Abstract

The invention discloses a carbon fiber-graphene filled flexible high thermal conductive insulating flame retardant plastic for an LED and a preparation method of the plastic. The plastic is characterized by taking magnesium oxide, boron nitride, PBT, EVA, glass fiber, 107 glue, dibutyltin dilaurate, tetraethyl orthosilicate, melamine cyanurate, zinc borate, aluminum hypophosphite, bamboo charcoal, nano SiO2, butyltin chloride dihydroxide, graphene oxide, carbon fiber, aluminum oxide, 1-butyl-3-methylimidazolium hexafluorophosphate and the like as raw material. According to the plastic, H550 surface treated silicone rubber is prepared, butyltin chloride dihydroxide serves as a catalyst, and reinforcing and toughening treatment is conducted on polybutylene terephthalate (PBT) with nano SiO2; a composite flame retardant is prepared from aluminum hypophosphite and melamine cyanurate; the carbon fiber-graphene filled flexible high thermal conductive insulating flame retardant plastic for the LED is obtained.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a flexible, highly thermally conductive, insulating, flame-retardant plastic filled with carbon fiber-graphene for LEDs, and a preparation process thereof. Background technique [0002] As an excellent photoelectric device, LED has the advantages of small size, long life, low-carbon environmental protection, energy saving and stability, etc. It is expected to become a new generation of ideal general lighting sources in the next few years. With the development of LED to high light intensity and high power, its heat dissipation problem is becoming more and more prominent, which seriously affects the light output characteristics of LED and the life of the device, and has become a key problem that must be solved for high-power LED packaging. As a housing for LED lamps, thermally conductive composite materials have the advantages of light weight, easy processing and molding, and low...

AI Technical Summary

Problems solved by technology

In her master's thesis "Research on Thermally Conductive Plastics for LED Lamps", Ma Jieling used polybutylene terephthalate (PBT) as the matrix, magnesium oxide and boron nitride as thermally conductive fillers, and ethylene-vinyl acetate copolymer. Reinforced and toughened with EVA and glass fibers, and prepared a thermally conductive composite material using a twin-screw extruder, which improves the thermal conductivity and mechanical properties of the thermally conductive composite material, but has insufficient thermal conductivity and does not have flame retardancy. performance