Laser foaming aid composition as well as preparation method and application thereof

Abstract

The invention discloses a laser foaming aid composition as well as a preparation method and application thereof, the laser foaming aid composition comprises boron nitride, graphene oxide, a coupling agent and a thermoplastic polymer, and the mass ratio of the boron nitride to the graphene oxide to the coupling agent to the thermoplastic polymer is 1: (1-15): (0.05-0.3): (1-30). After the laser foaming aid composition disclosed by the invention is added into various colorful polymer materials, the dispersity of the laser foaming aid in the polymer materials is greatly improved, a remarkable laser foaming effect is realized, and meanwhile, a colorful polymer foaming material with a uniform foam structure is obtained. The preparation method of the laser foaming aid disclosed by the invention is simple and efficient, can be suitable for polymer materials (including thermoplastic polymers and thermosetting polymers) with different colors, has a wide application prospect, and is very suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of polymer material additives and material processing, and in particular relates to a laser foaming additive composition and a preparation method and application thereof. Background technique [0002] Laser foaming is a new type of foaming technology that uses laser high-energy energy to irradiate the surface of the material to cause a series of complex photochemical and / or photothermal reactions to achieve local foaming of the material. Compared with traditional foaming technology, this technology has the advantages of simple process, environmental friendliness, low cost and local controllability, and it can also precisely initiate foaming in a certain area of ​​the material. [0003] Since most polymer materials (such as: polypropylene, ethylene-octene copolymer, cycloolefin copolymer, etc.) have insufficient ability to absorb laser energy, it is difficult to directly realize the surface foaming of polymer materials...

AI Technical Summary

Problems solved by technology

However, it uses metal flakes, metal oxides, and metal phosphates as laser absorber materials, which not only increases the cost of raw materials and manufacturing costs, but also causes environmental pollution and affects personnel health if long-term exposure to laser absorbers

In addition, due to the existence of the foaming agent, it is necessary to strictly control the processing temperature and / or add other additives during the production process to prevent or delay the premature reaction of the foaming agent, and there are defects such as complicated control process and high energy consumption.

[0005] Chinese patent CN108841031B discloses the application of graphene as a laser foaming agent. Adding a single graphene directly to a thermoplastic polymer material can achieve a better laser foaming effect under laser irradiation, but it cannot be used for thermosetting resins. Get better laser foaming effect

On the other hand, the color of graphene is black or dark gray, which has strong dyeing ability. When graphene is added to the polymer material, it will significantly change the background color of the polymer material, making it black, gray black or dark gray , therefore, a single graphene can only be used in black or dark polymer materials to realize its laser foaming, which cannot satisfy the laser foaming of polymer materials of different colors, which seriously limits its application field, thus industrialization restricted

[0006] Chinese patent CN106633764A discloses a laser marking additive composed of graphene and polymer, which improves the dispersion effect of graphene powder in laser marking objects, but it can only achieve laser marking of polymer after laser irradiation, and still cannot induce polymerization laser foaming

Images