Kaolin-p-aminobenzamide ferroelectric compound and preparation method of kaolin-p-aminobenzamide ferroelectric compound

A technology of aminobenzamide and ferroelectric compounds, applied in the field of new compounds, can solve the problems of limited application range, low Curie temperature, poor fatigue resistance, etc., achieve good piezoelectric and electrostrictive effects, and increase storage density , the effect of high thermal stability

Inactive Publication Date: 2017-06-13
ANQING NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the best ferroelectric materials are inorganic substances, especially lead-containing series ferroelectric ceramics, such as PZT and its doped series, etc., but due to its low Curie temperature, poor fatigue resistance and lead toxicity, etc., The scope of application is limited, and it is necessary to develop new ferroelectric materials
In recent years, with the deepening of related research, organic-inorganic hybrid ferroelectric materials have gradually received attention, especially crystalline hybrid ferroelectric materials. The basic idea is to use various ligands that are commercially available or synthesized in the laboratory as raw materials. , synthesized by functional complex technology, but there are also problems in the preparation process, such as expensive raw materials, many ligand synthesis steps, reagent pollution, and long test cycle.

Method used

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  • Kaolin-p-aminobenzamide ferroelectric compound and preparation method of kaolin-p-aminobenzamide ferroelectric compound
  • Kaolin-p-aminobenzamide ferroelectric compound and preparation method of kaolin-p-aminobenzamide ferroelectric compound
  • Kaolin-p-aminobenzamide ferroelectric compound and preparation method of kaolin-p-aminobenzamide ferroelectric compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 10g of kaolin, 100 ml of dimethyl sulfoxide and 10 ml of deionized water were sealed in a 250 ml stainless steel reactor at 100°C for 5 hours to obtain a K-DMSO precursor; 1 g of the precursor and 1 g of p-aminobenzamide Seal it in a 25 ml stainless steel reaction kettle, react at 180 °C for 5 hours, cool down, add 10 ml of ethanol, filter with suction, wash, and dry to obtain K-PABA.

Embodiment 2

[0032] 10g of kaolin, 100 ml of dimethyl sulfoxide and 5 ml of deionized water were sealed in a 250 ml stainless steel reactor at 90°C for 6 hours to obtain a K-DMSO precursor; 1 g of the precursor and 1 g of p-aminobenzamide Seal it in a 25 ml stainless steel reaction kettle, react at 190°C for 8 hours, cool down, add 20 ml of ethanol, filter with suction, wash, and dry to obtain K-PABA.

Embodiment 3

[0034] 10g of kaolin, 100 ml of dimethyl sulfoxide and 15 ml of deionized water were sealed in a 250 ml stainless steel reactor at 70°C for 8 hours to obtain a K-DMSO precursor; 1 g of the precursor and 1 g of p-aminobenzamide Seal it in a 25 ml stainless steel reaction kettle, react at 200°C for 6 hours, add 15 ml of ethanol, filter with suction, wash, and dry to obtain K-PABA.

[0035] The characterization of kaolin-p-aminobenzamide ferroelectric compound of the present invention:

[0036] (1) X-ray diffraction characterization

[0037] see figure 1 , The powder diffraction data were collected on a Bruker D8 ADVANCE diffractometer with an operating current of 40 mA and a voltage of 40 kV. Copper target X-rays using graphite monochromatization. Data collection was done using 2q / q scan mode, with continuous scans ranging from 3° to 70° at a scan rate of 0.1° / sec with a step size of 0.01°. Such as figure 1 As shown, after DMSO intercalation, the 001 diffraction peak of kao...

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Abstract

The invention relates to a new compound and a preparation method of the new compound and in particular relates to a kaolin-p-aminobenzamide ferroelectric compound and a preparation method of the kaolin-p-aminobenzamide ferroelectric compound. The preparation method comprises the following steps: 1) putting kaolin, dimethyl sulfoxide and a certain amount of water into a stainless steel kettle, keeping the heat at 70 DEG C to 100 DEG C and reacting for 5h to 8h to obtain a precursor; 2) taking p-aminobenzamide and the precursor (at the mass ratio of 1 to 1) to react in the stainless steel kettle to react at 180 DEG C to 200 DEG C for 5h to 10h; realizing intercalation replacement through self-supercharging of a reaction system; 3) washing with ethanol, filtering and drying to obtain a target product with a chemical formula of Al2Si2O5(OH)4.(PABA)0.25, wherein PABA is the p-aminobenzamide. The compound provided by the invention has a two-dimensional lamellar structure and relatively high heat stability; p-aminobenzamide molecules in interlamination have a great dipole moment to and polarity reversal can be realized under the effect of an external electric field to embody ferroelectricity; the kaolin-p-aminobenzamide ferroelectric compound can be used as a novel mineral ferroelectric material.

Description

technical field [0001] The invention relates to a new compound, in particular to a ferroelectric compound prepared from kaolin as a raw material, and also provides a preparation method of the compound. Background technique [0002] Ferroelectric materials are a special class of functional materials, characterized by the presence of spontaneous polarization inside, and the spontaneous polarization can be reversed with an external electric field. They have important applications in many fields such as condensed matter physics and solid-state electronics. Typical Common ferroelectrics include BaTiO3 and KH2PO4, etc. At present, most of the best ferroelectric materials are inorganic substances, especially lead-containing series ferroelectric ceramics, such as PZT and its doped series, etc., but due to its low Curie temperature, poor fatigue resistance and lead toxicity, etc., The scope of application is limited, and it becomes necessary to develop new ferroelectric materials. ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C07C231/12C07C237/30
CPCC07C231/12C07C237/30C07C315/04C07C317/04
Inventor汪婕朱苗苗冯小亮赵顺平徐衡郭玉陈太杰
OwnerANQING NORMAL UNIV