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A pressure-responsive aromatic sustained-release microcapsule, its preparation method and its application

A fragrance slow-release and microcapsule technology, which is applied in the direction of microcapsule preparation, microsphere preparation, essential oil/fragrance, etc., can solve the problems of poor fragrance release effect, waste of raw materials, and low service life

Active Publication Date: 2020-08-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a condition-triggered microcapsule that releases essence in order to overcome the defects of raw material waste, low service life and poor fragrance release effect caused by the microcapsule fragrance release without excitation process in the prior art

Method used

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  • A pressure-responsive aromatic sustained-release microcapsule, its preparation method and its application
  • A pressure-responsive aromatic sustained-release microcapsule, its preparation method and its application
  • A pressure-responsive aromatic sustained-release microcapsule, its preparation method and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for preparing pressure-responsive aromatic slow-release microcapsules, the specific steps are as follows:

[0044] (1) Preparation of porous silica powder adsorbed with plant essential oil: use porous silica powder as the adsorption material to absorb plant essential oil at 80°C for 45min, filter while hot and wash with ethanol three times, and then Dry at room temperature and -0.05MPa for 48 hours to obtain porous silica powder adsorbed with essence, wherein the average particle size of the porous silica powder is 1.0 μm, the porosity is 30%, and the specific surface area is 300m 2 / g, the mass ratio of silicon dioxide powder and plant essential oil is 1:100;

[0045] (2) Disperse the porous silica powder adsorbed with plant essential oil in deionized water whose stirring speed is 6000r / min;

[0046] (3) After adding nano-silica, natural latex and cross-linking agent XR-500 and cross-linking at 60°C for 15 minutes, cross-linking at 85°C for 10 minutes to prep...

Embodiment 2

[0058] A method for preparing pressure-responsive aromatic slow-release microcapsules, the specific steps are as follows:

[0059] (1) Preparation of porous silica powder adsorbed with grapefruit essence: use porous silica powder as the adsorption material to absorb grapefruit essence at 60°C for 25 minutes, filter while hot and wash with ethanol three times, Then dry at room temperature and -0.05MPa for 48 hours to obtain a porous silica powder adsorbed with essence, wherein the average particle diameter of the porous silica powder is 0.5 μm, the porosity is 30%, and the specific surface area is 150m 2 / g, the mass ratio of silicon dioxide powder and grapefruit essence is 1:10;

[0060] (2) Disperse the porous silica powder adsorbed with grapefruit essence in deionized water whose stirring speed is 3000r / min;

[0061] (3) After adding nano-silica, natural latex and cross-linking agent XR-500, cross-linking at 45°C for 15 minutes, and then cross-linking at 70°C for 10 minutes...

Embodiment 3

[0071] A method for preparing pressure-responsive aromatic slow-release microcapsules, the specific steps are as follows:

[0072] (1) Preparation of porous silica powder adsorbed with lemon essence: use porous silica powder as the adsorption material, after adsorbing lemon essence at 75°C for 35 minutes, filter while hot and wash with ethanol three times, then in room temperature , Dry for 48 hours under the condition of -0.05MPa to obtain porous silica powder with essence adsorbed, wherein the average particle size of the porous silica powder is 0.5μm, the porosity is 30%, and the specific surface area is 200m 2 / g, the mass ratio of silicon dioxide powder and lemon essence is 1:50;

[0073] (2) Disperse the porous silica powder adsorbed with lemon essence in deionized water whose stirring speed is 6000r / min;

[0074] (3) After adding nano-silica, natural latex and cross-linking agent XR-500, cross-linking at 60°C for 15 minutes, cross-linking at 85°C for 5 minutes to prepa...

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Abstract

The invention relates to a pressure-responsive fragrant sustained-release microcapsule, and a preparation method and an application thereof. The microcapsule comprises a core material and a wall material coated outside the core material. The preparation method comprises the following steps: dispersing an essence-adsorbed porous silicon dioxide powder into deionized water under stirring, adding nanometer silicon dioxide, natural latex and a cross-linking agent I for cross-linking so as to prepare the pressure-responsive fragrant sustained-release microcapsule. The pressure-responsive fragrant sustained-release microcapsule is applied through the following steps: adding the natural latex into the prepared microcapsule, then adding a cross-linking agent II and the deionized water, carrying out uniform dispersing, injecting a dispersion into a mold, carrying out drying, cross-linking and cooling so as to prepare an elastic material, and coating an EVA hot melt adhesive onto two sides of the elastic material so as to prepare an elastic carpet. According to the invention, the preparation method is simple; raw materials are easily-available; and the essence release speed of the fragrant sustained-release microcapsule has a certain relationship with the pressure that the fragrant sustained-release microcapsule bears, so the release effect of an essence in the interior of the microcapsule is effectively improved; the usage amount of perfumes is saved; the service life of the carpet is prolonged; and significant application prospects are achieved.

Description

technical field [0001] The invention belongs to the field of microcapsules, and relates to a pressure-responsive aromatic slow-release microcapsule, a preparation method and an application thereof. Background technique [0002] Because of its sound-absorbing and sound-insulating properties, good warmth retention, dust-proof, good safety and beautiful appearance, the carpet can bring people walking comfort and beautify the living environment at the same time. , together with furniture and other decorative equipment, constitute a harmonious and comfortable picture, bring people a good mood, and become an important material for home decoration. At present, the annual output of carpets in the world is more than 300 million square meters, and more than 65% of the output comes from China. A variety of industries, along with the improvement of people's living standards, carpet materials with various fragrances and functions are sought after by people. Elastic carpet is a new type...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/14C11B9/00C08L7/02C08K9/10C08K7/26C08K3/36
CPCB01J13/14C08K3/36C08K7/26C08K9/10C08L2205/18C11B9/00C08L7/02
Inventor 陈仕艳吴擢彤江振林王华平
Owner DONGHUA UNIV
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