Polycarbonate as well as preparation method and application thereof

Abstract

The invention relates to polycarbonate as well as a preparation method and application thereof, and the preparation method comprises the following steps: firstly, preparing a ureido pyrimidinone typediisocyanate from a first compound and a second compound; and reacting a third compound with the prepared ureido pyrimidinone type diisocyanate to prepare the polycarbonate. The polycarbonate is usedfor replacing a metal scratch-resistant material, so that the defects of signal shielding and overlarge self weight, easiness in generating static electricity in winter and the like when the metal scratch-resistant material is used can be avoided, and the self-repairing performance of the material is realized; and a shell prepared from the polycarbonate shell has good heat resistance, thus internal components can be well protected.

Description

technical field [0001] The invention relates to the field of preparation of self-repairing materials, in particular to a polycarbonate, its preparation method and its application. Background technique [0002] The current mobile phone case will inevitably produce force majeure external force damage during use, thereby shortening the service life of the mobile phone case. Because the use of metal scratch-resistant materials to make mobile phone cases has the disadvantages of signal shielding and excessive weight, and it is easy to generate static electricity in winter, so most of the currently used mobile phone case materials tend to be alloys and plastics. Alloys are often not the best choice because of their large weight, so choosing plastics is an emerging direction in the future. However, plastics are often easily disturbed by the external environment, such as poor heat resistance and easy to be scratched, which will cause a huge waste of resources, so it is difficult to...

AI Technical Summary

Problems solved by technology

[0005] At present, more studies are made on the use of microcapsule self-healing materials coated with repairing agents. Although this repairing material has a certain self-repairing ability, it also has shortcomings, such as: each repairing agent corresponds to a limited matrix and is limited in the material. Each place has only one repair ability; the stability of the microcapsules in the base material is poor, and they cannot exist stably in the base material for a long time; when the material cracks, the release of the repair agent cannot be guaranteed every time the microcapsules break

Self-healing materials based on hydrogen bonds, because the hydrogen bonds are reversible, the materials have multiple repair capabilities in each place and the materials are easy to process; but the bond energy of ordinary hydrogen bonds is low, and the properties of the prepared hydrogen bond polymer materials poor

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