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A functional coating, slow-release technology, applied in the direction of coating, etc., can solve the problems of uncontrollable color, decline of coating resistance to washing, poor stability of the mixture, etc., and achieve the effect of optimizing indoor air quality
Inactive Publication Date: 2019-12-17
SHANGHAI BIOASIA LIFE TECH
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Problems solved by technology
Natural plant fragrance substances such as petals and pollen can not control the color due to the influence of other factors such as the pH value of the paint and the environment, while natural plant essential oils cannot be stably miscible with the water phase for a long time, the mixture has poor stability and fast volatilization and other defects, resulting in certain restrictions on its application
Cylindrical or layered structure slow-release fragrance nanomaterials can effectively solve the solubility and volatilization stability of plant essential oils, and can control and adjust the color of paint, but the particle size is large and the surface is not smooth enough, which makes the paint's scrub resistance has declined, and only first-class products can be obtained directly
However, the material needs to be further pulverized, which will destroy the inclusion structure to a certain extent.
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Embodiment 1
[0065] The preparation of embodiment 1 sustained-release fragrance nanomaterial
[0067] Preparation scheme: First, take an appropriate amount of gum arabic and dissolve it in distilled water at 50-60°C. After 30 minutes, add maltodextrin into the aqueous solution of gum arabic. After dissolving, keep the temperature for 20 minutes. ℃ homogenization for 30 minutes, spray drying to obtain slow-release plant fragrance nanomaterials. Wherein, the weight ratio between gum arabic and maltodextrin is 1:1. The added amount of emulsifier is 0.3% of the mass of the whole solution. The molecular formula of the molecularly distilled monoglyceride is C 21 h 42 o 4 , the molecular weight is 358.87, and the CAS is 123-94-4.
[0068] The colloid milling method is used to prepare slow-release aromatic nanometer materials, and the spray drying method is used to prepare clathrates, which can ...
Embodiment 2～28
[0076] Example 2-28 Preparation of slow-release plant fragrance functional coating
[0077] According to the formulations in the following tables 3-1, 3-2, 3-3, prepare the slow release type plant fragrance functional coating.
[0078] The preparation method comprises the following steps:
[0079] (1) Fully stir the deionized water, dispersant, wetting agent, antifreeze, 1 / 2 defoamer, and 1 / 4 thickener in the raw material components.
[0080] (2) Under continuous stirring conditions, add titanium dioxide, 1 / 2 thickener, filler and the slow-release aromatic nanomaterial obtained in Example 1 to the material obtained in step (1), disperse at a high speed, and then transfer it to the grinder Grinding, when the product particle fineness reaches 18-22um, stop grinding.
[0081] (3) Add antifungal agent, bactericide, multifunctional additive, film-forming additive, 1 / 2 defoamer, leveling agent, 1 / 4 thickener, water-resistant environmental protectionadhesive to the material obtain...
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Abstract
The invention belongs to the technical field of coatings, and particularly relates to a microencapsulated slow-release natural plant fragrance functional coating. Natural plantessential oil is used as the main active component of a fragrance nano-material, the plantessential oil is capsulated with a natural or synthetic high-molecular material to obtain a slow-release plant fragrance nano-material, and the slow-release plant fragrance nano-material, an emulsion, a pigment and filler and a solvent aid form the slow-release natural plant fragrance functional coating. The natural plant essential oil is effectively and uniformly distributed in the coating, and is slowly released from the above encapsulated compound to realize long-time effective optimization of the indoor air quality.
Description
technical field [0001] The invention belongs to the technical field of coatings, in particular to a microcapsule slow-release natural plant fragrance functional coating. Background technique [0002] With the rapid development of today's society, people's requirements for living comfort are increasing, and people are paying more and more attention to a healthy and environmentally friendlyliving environment. According to relevant statistics, about 70% of human life is spent indoors, so indoor air quality has become a hot spot of concern. There are more than 300 kinds of indoor air pollutants that have been found, of which more than 20 are likely to cause harm to the human body, or even cause cancer, which greatly threatens the healthy life of human beings. In recent years, people pay more and more attention to the impact of indoor air quality on people's health, and pay more attention to the health and environmental protection of decoration materials. For paint products, i...
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