Dioxaborinane group modified barium titanate with reversible cross-linked structure and preparation method of dioxaborinane group modified barium titanate

Abstract

The invention discloses dioxaborinane group modified barium titanate with a reversible cross-linked structure and a preparation method of the dioxaborinane group modified barium titanate. The method comprises the steps: firstly, reacting 4-carboxyphenylboronic acid and propylene glycol to obtain a dioxaborinane derivative, and then carrying out acylation reaction on the dioxaborinane derivative and KH550 grafted barium titanate to obtain dioxaborinane group-containing barium titanate A; secondly, reacting KH560 grafted barium titanate with phenylboronic acid to obtain barium titanate B containing a dioxaborinane group; and finally, reacting the barium titanate A with the barium titanate B by utilizing a double decomposition reaction principle of the dioxaborinane group to obtain the dioxaborinane group modified barium titanate with the reversible cross-linked structure. The dioxaborinane group modified barium titanate with the reversible cross-linked structure can be used as a high-dielectric filler of a novel Vitrimer material, so that the blank of the functional filler at home and abroad is filled.

Description

technical field [0001] The invention relates to the technical field of high dielectric resin fillers, in particular to a dioxaborane group-modified barium titanate with a reversible crosslinking structure and a preparation method thereof. Background technique [0002] Dielectric material is a kind of insulating material with excellent dielectric capacity. Due to the phenomenon of polarization, conduction, loss and breakdown under the action of electric field, dielectric material is the frontier hotspot in the field of contemporary energy storage devices and new energy research. One of (QiL, Lei C, Gadinski MR, et al. Flexible high-temperature dielectric materials from polymer nanocomposites[J]. Nature, 2015, 523: 576~579; Kumar S, SupriyaS, Kar M. Enhancement of dielectric constant in polymer -ceramic nanocomposite for flexible electronics and energy storage applications[J]. CompositesScience and Technology, 2018, 157: 48~56). Barium titanate is a high dielectric inorganic ...

AI Technical Summary

Problems solved by technology

[0007] (1) Most of the modification methods of barium titanate are to improve the polarity of the particle surface through organic modification to improve the compatibility with polymers, but such modified barium titanate usually cannot form chemical bonds with polymer molecular chains, The binding ability of barium pertitanate and polymer is not strong enough

[0008] (2) The traditional modified barium titanate for the new Vitrimer material with dioxaborane groups may destroy the cross-linking structure inside the polymer due to the lack of bonding after filling, resulting in the self-healing of the Vitrimer material and other functions disappear

Images