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Stimulation responsive spiral polyyne infrared radiation material and preparation method

An infrared radiation and responsive technology, which is applied in the field of stimuli-responsive helical polyalkyne infrared radiation materials and preparation, can solve the problems of large thickness, low emission colored pigment molecule design difficulty, high infrared emissivity, etc., and achieve mild reaction conditions , good thermal stability and controllability of infrared radiation performance, and the effect of simple preparation process

Active Publication Date: 2019-11-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the current situation is concerned, it is very difficult to design low-emission colored pigment molecules. So far, there are very few colored pigments that are really obtained by synthesizing new molecules or changing molecular structures.
In addition, when the infrared stealth paint is coated, the thickness is large, resulting in a large weight, which is inconvenient to carry and apply; the coating made of infrared stealth paint has low physical and mechanical properties and adhesion, and it is difficult to withstand long-term ultraviolet radiation and exposure. Atmospheric corrosion; and the infrared emissivity of microwave and infrared compatible camouflage materials using infrared stealth coatings is high, which is difficult to meet the requirements of military materials

Method used

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  • Stimulation responsive spiral polyyne infrared radiation material and preparation method
  • Stimulation responsive spiral polyyne infrared radiation material and preparation method
  • Stimulation responsive spiral polyyne infrared radiation material and preparation method

Examples

Experimental program
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Effect test

example 1

[0025] a) Under ice bath, add 1.73g (S)-2-(6-hydroxy-2-naphthalene)propionic acid, 1.51g isobutyl chloroformate, and 1.01g N-methylmorpholine to a chamber containing 50mL of tetrahydrofuran. In the reaction kettle, 10 mL of propargylamine tetrahydrofuran solution with a concentration of 0.8 mol / L was added dropwise to the mixed solution after the reaction for 15 min. After the dropwise addition for 15 min, the reaction was continued at 30 ° C for 12 h, filtered, and the tetrahydrofuran was evaporated under reduced pressure at 60 ° C. Then extract with 30 mL of ethyl acetate each time, combine the three extractions to obtain an extraction mixture, and sequentially use 25 mL of aqueous hydrochloric acid with a mass fraction of 2 wt %, 25 mL of saturated NaHCO 3 The extract was washed with an aqueous solution and 25 mL of saturated aqueous NaCl solution, and the obtained extract was washed with 2.2 g of anhydrous MgSO 4Dry for 12h, filter, and evaporate the filtrate under reduced...

example 2

[0032] a) Under ice bath, add 2 g of (S)-2-(6-hydroxy-2-naphthalene) propionic acid, 1.8 g of isobutyl chloroformate, and 1.4 g of N-methylmorpholine to a solution containing 100 mL of tetrahydrofuran. The reaction was carried out in the reaction kettle for 20 min, and then 30 mL of propargylamine tetrahydrofuran solution with a concentration of 1.2 mol / L was added dropwise to the mixed solution. After the dropwise addition for 20 min, the reaction mixture was reacted at 30 °C for 20 h, filtered, and decompressed at 50 °C. The tetrahydrofuran was evaporated, extracted with 30 mL of ethyl acetate each time, and the extracts were combined for three times to obtain an extraction mixture, and 30 mL of aqueous hydrochloric acid with a mass fraction of 3 wt % and 30 mL of saturated NaHCO were successively used. 3 The extract was washed with an aqueous solution and 30 mL of saturated NaCl aqueous solution, and the obtained extraction mixture was washed with 2 g of anhydrous MgSO 4 Dr...

example 3

[0039] a) Under ice bath, 1.50g (S)-2-(6-hydroxy-2-naphthalene)propionic acid, 1.37g isobutyl chloroformate, 0.81g N-methylmorpholine were added to the tetrahydrofuran containing 40mL In the reaction kettle, 10 mL of propargylamine tetrahydrofuran solution with a concentration of 1.00 mol / L was added dropwise to the mixed solution after the reaction for 25 min. After the dropwise addition for 25 min, the reaction was continued at 30 °C for 18 h, filtered, and the tetrahydrofuran was evaporated under reduced pressure at 55 °C. Then extract with 20 mL of ethyl acetate each time, combine the three extractions to obtain an extraction mixture, and sequentially use 20 mL of aqueous hydrochloric acid with a mass fraction of 2 wt %, 20 mL of saturated NaHCO 3 The extract was washed with an aqueous solution and 20 mL of saturated NaCl aqueous solution, and the extracted mixture after washing was washed with 3.6 g of anhydrous MgSO. 4 Dry at 25°C for 12h, filter, and evaporate the filt...

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Abstract

The invention discloses a stimulation responsive spiral polyyne infrared radiation material which is prepared from bromine-containing alkyne copolymers and amphipathic double-bond containing monomersthrough atom transfer radical polymerization, the material has a structure formula shown in the specification, in the formula, R1 is one of formulae shown in the specification, the polymerization degree m is an integer of 1-1000, n is an integer of 1-1000, and q is an integer of 1-1000. By using an atom transfer radical polymerization method, stimulation responsive spiral polyyne infrared radiation materials of different stimulation response are prepared from the bromine-containing alkyne copolymers and the amphipathic double-bond containing monomers, and through change of temperatures and pHvalues, low infrared emission rate regulation and control at a wave band of 8-14[mu] m are achieved. Meanwhile, the material is simple and convenient in preparation process, gentle in reaction condition, and good in thermal stability and infrared radiation performance regulation and control.

Description

technical field [0001] The invention relates to a stimuli-responsive helical polyyne infrared radiation material and a preparation method, which belong to the preparation category of organic functional polymer materials and can be applied to infrared stealth materials. Background technique [0002] Polyacetylene compounds are special natural compounds with high degree of unsaturation and chemical activity. Its characteristics of low density, easy processing, corrosion resistance, large-area film formation, and electrical conductivity can be adjusted in the range of more than ten orders of magnitude. A class of materials indispensable to many advanced industrial sectors and cutting-edge technologies. [0003] At present, the research on infrared stealth materials at home and abroad is very active, such as conductive polymers, nano-films, ultra-fine particles, ferromagnetic materials, semiconductor materials, etc. From the perspective of the existing technology, researchers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F281/00C08F220/54C08F220/34C08F238/00
CPCC08F238/00C08F281/00C08F2438/01C08F220/54C08F220/34
Inventor 周钰明胡赛春王泳娟卜小海何曼贺强仲洋洋张一卫杨晓明
Owner SOUTHEAST UNIV
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