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Thermochromic material, preparation method thereof and application of thermochromic material in cigarette paper

A temperature-induced discoloration and cigarette paper technology, applied in the field of tobacco, can solve the problems of unfavorable temperature-induced discoloration, long time, unfavorable temperature-induced discoloration, etc., to achieve obvious thermochromism effect, fast temperature-induced discoloration, and protective effect obvious effect

Active Publication Date: 2021-11-16
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when cresyl red-boric acid is loaded on fibrous silica, its color changes from orange red to rose red when it is heated to 60°C, and then it changes completely to rose red at 80°C. The discoloration temperature is relatively high; the discoloration system is cooled After that, it takes 10 minutes for the color to return to the initial orange-red color, which takes a long time; it is not conducive to the indication of thermochromism
For the study on the temperature-induced change of cresyl red-boric acid loaded on the amino-modified fibrous silica system, the color changes from yellow to rose red, and the color change is obvious when heated to 80°C, and it is completely transformed into rose red at 120°C. The temperature is higher; after the discoloration system is cooled, it takes 210s to return to the original yellow color, which takes longer and is not conducive to the indication of thermochromism
In addition, fibrous silica is used as a carrier, and the loaded cresyl red-boric acid is easy to lose, and the dispersion is not uniform enough, which is not conducive to the indication of temperature-induced discoloration

Method used

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  • Thermochromic material, preparation method thereof and application of thermochromic material in cigarette paper
  • Thermochromic material, preparation method thereof and application of thermochromic material in cigarette paper
  • Thermochromic material, preparation method thereof and application of thermochromic material in cigarette paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1: Preparation of temperature-discolored materials of the system of hollow-boric acid in the hollow mesh silica, and the preparation of coated roll paper. Proceed as follows:

[0046] 1. Synthesis template polystyrene microspheres (PS microspheres).

[0047] 1.0g Polyvinylpyrrolidone K-30 (PVP), ultrasonic dispersion at 100.0 ml of anhydrous ethanol and 10.0 ml of deionized water; mechanical stirring (250 rpm) and bubbles 10 min in nitrogen; 0.158 g of azo 2 Isobutyronitrile (AIBN), dissolved in 11.0 mL (10.0 g) styrene, then added in the above-mentioned alcohol aqueous solution; after 10 min, the temperature was raised to 70 ° C, and after 24 h, it was cold to room temperature, The product was centrifuged, and three times were washed three times with ethanol, and the dried gas drying tank was placed in a gas drying tank; ie the PS microspheres.

[0048] 2, synthetic PS @ SiO 2 Microspheres.

[0049] Two reaction solutions were first formulated. The reaction liquid ...

Embodiment 2

[0064] Example 2: Preparation of a temperature-discolored material of a system of amino modified hollow diaphragm silica loaded phenol red-boric acid, and the preparation of coated roll paper. Proceed as follows:

[0065] Step 1-3 as in Example 1.

[0066] 4. Preparation of the amino-modified hollow mesoporous silica.

[0067] 1.0g of hollow mesoporous silica H-SIO 2 In the single mouth round bottom flask, 50.0 ml of toluene was added, and the ultrasonic dispersion was dissociated; 2.0 ml of 3-aminopropyltriethoxysilane (APTES) was added to 115 ° C with a magnetic stirring; and reflux 10 h. The product was then centrifugally isolated, washed 3 times with 75% ethanol, and then dried in a 50 ° C blast drying box, i.e., the amino-modified hollow mesoperin silica (H-SiO) 2 -NH 2 ),spare.

[0068] 5, cresol red - boric acid preparation.

[0069] Step 4 of Example 1.

[0070] 6, cresol red-borate load in H-SiO 2 -NH 2 superior.

[0071] Trying step 4 H-SIO 2 -NH 2 The product 500 mg ult...

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Abstract

The invention discloses a thermochromic material, which is a system of hollow mesoporous silica loaded cresol red-boric acid, or a system of amino-modified hollow mesoporous silica loaded cresol red-boric acid. The invention further discloses a preparation method of the thermochromic material and application of the thermochromic coating material in cigarette paper. The thermochromic material disclosed by the invention has a prompting effect on temperature.

Description

Technical field [0001] The present invention belongs to the field of tobacco, and more particularly to a method of preparing a temperature-discolored material and a use of cigarette paper. Background technique [0002] Most of the prior art cigarette paper is white, and some cigarette paper is colored. These rolls cannot be changed with color changes as the temperature changes before and after suction of the cigarette, that is, the cigarette paper does not function in the combustion process. Because there are many consumers who fail to completely smoke, they are discarded, even half of the cigarettes that are burning, which will bring greater safety hazards. Although the fire of the cigarette burner can prompt whether the cigarette is completely extinguished, some of the burning ends of some cigarettes do not open fire and the inner tobacco is still burning, so that they are discarded still have a safety hazard. [0003] Current discoloration of the cigarette paper can visually p...

Claims

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Application Information

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IPC IPC(8): C09K9/00C09K9/02D21H23/22D21H27/00
CPCC09K9/00C09K9/02D21H27/00D21H23/22
Inventor 余婷婷程量王旭胡月航王浩谢姣岳保山张莹李赓詹建波
Owner CHINA TOBACCO YUNNAN IND
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