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CN-119039041-B - Fragrance slow-release ceramic material and preparation method thereof

CN119039041BCN 119039041 BCN119039041 BCN 119039041BCN-119039041-B

Abstract

The invention discloses a fragrance slow-release ceramic material and a preparation method thereof. The invention relates to the technical field of fragrance products. The preparation method comprises the steps of S1, uniformly mixing flaky alumina and calcined kaolin powder, S2, heating and stirring the powder, adding liquid paraffin and additives after thermal melting, stirring to obtain ceramic slurry, S3, vacuumizing and stirring the prepared ceramic slurry, performing hot-pressing casting to obtain ceramic green bodies, S4, embedding the ceramic green bodies into alumina sintering powder, placing the ceramic green bodies into a kiln for primary sintering, taking out the embedded ceramic blocks after cooling, then performing surface treatment, S5, soaking the ceramic blocks after the treatment, and packaging after the surface of the ceramic blocks is dried after the soaking. The invention overcomes the contradiction between the light weight and the high strength of the traditional porous ceramic by optimizing the micro-pore structure of the porous ceramic block and adopting the hot die casting molding mode, and has higher porosity.

Inventors

  • XIONG YOUHUI
  • SHANG GUOQING
  • XIANG MINGYU
  • YANG YU

Assignees

  • 四方光电股份有限公司

Dates

Publication Date
20260508
Application Date
20240816

Claims (10)

  1. 1. The preparation method of the fragrance slow-release ceramic material is characterized by comprising the following steps: s1, uniformly mixing the weighed flaky alumina and calcined kaolin powder; S2, heating and stirring the powder, adding the liquid paraffin and the additive after thermal state melting, and stirring for a period of time to obtain ceramic slurry; S3, vacuumizing, stirring and hot-pressing casting the prepared ceramic slurry to form a ceramic green body; s4, embedding the ceramic green body into alumina sintering powder, then placing the ceramic green body into a kiln for primary sintering, taking out the embedded ceramic blocks after cooling, and then carrying out surface treatment; S5, the treated ceramic blocks are subjected to fragrance impregnation, and after fragrance impregnation is finished, the surfaces of the ceramic blocks are dried and then packaged; The particle size median diameter of the flaky alumina is 3-30 mu m, the width-to-thickness ratio is 1-10, and the median diameter of the calcined kaolin is 1-3 mu m.
  2. 2. The method of claim 1, wherein the step S1 further comprises a coloring material, the mass of the coloring material is 1% -10% of the sum of the mass of the coloring material, the mass of the flaky alumina and the mass of the calcined kaolin.
  3. 3. The method for preparing a slow-release ceramic material according to claim 2, wherein the pigment is a metallic mineral phase pigment.
  4. 4. The method for preparing the fragrance slow-release ceramic material according to claim 1, wherein the mass ratio of the flaky alumina, the calcined kaolin, the paraffin and the additive in the ceramic slurry is 40-60:20-40:15-20:1-5.
  5. 5. The method for preparing a fragrance slow-release ceramic material according to claim 1, wherein in the step S2, the heating temperature is 65-90 ℃ and the stirring time is 4-8 hours.
  6. 6. The method for preparing a slow-release ceramic material according to claim 1, wherein the additive is beeswax, stearic acid or oleic acid.
  7. 7. The method for preparing the fragrance sustained-release ceramic material according to claim 1, wherein the specific operation of the step S3 is that the prepared ceramic slurry is added into a forming machine, the temperature is set to be 60-75 ℃, the ceramic slurry is vacuumized and stirred for 10-300 min, and then the ceramic slurry is formed by hot die casting, the pressure is 0.4-0.8 MPa, and the pressure maintaining time is 5-30S.
  8. 8. The method for preparing a fragrance slow-release ceramic material according to claim 1, wherein in the step S4, the primary sintering temperature is controlled to be 1200-1400 ℃.
  9. 9. The method for preparing the fragrance slow-release ceramic material according to claim 1, wherein the method is characterized in that after sintering, the product is subjected to vibration screening to remove embedded sintering powder, then the product is subjected to surface polishing treatment to remove adhered powder particles, and/or the fragrance dipping mode adopts a soaking or/and fragrance injection mode.
  10. 10. A fragrance slow release ceramic material prepared by the preparation method of any one of claims 1 to 9.

Description

Fragrance slow-release ceramic material and preparation method thereof Technical Field The invention relates to the technical field of fragrance products, in particular to a fragrance slow-release ceramic material and a preparation method thereof. Background At present, the common fragrance products in the market mainly have two fragrance dispersing modes, namely a liquid type and a solid type. The liquid type fragrance is quick to volatilize and obvious in smell, but the liquid type fragrance is easy to leak, has harsh storage environment and has hidden danger of possible combustion explosion at high temperature, so that the liquid type fragrance is less used on the vehicle-mounted fragrance, the solid type fragrance mainly comprises fragrance paste and fragrance carriers, namely, the fragrance is made into solid paste or the fragrance liquid is absorbed by using other carriers, so that the fragrance is slowly released, and compared with the liquid fragrance, the solid type fragrance is more free and convenient in use scene and longer in fragrance retention time. Compared with liquid perfume, the solid perfume has finer fragrance and longer fragrance dispersing time. The common fragrance paste is that the perfume is mixed with the paste and then put into a container to form paste form, which can be dispersed by natural volatilization, and the carrier products are usually carrier mediums such as gypsum, silica gel, paper sheets, ceramics and the like, through which a large amount of fragrance liquid is adsorbed and the volatilization rate is controlled, so that the fragrance can be retained for a long time. Among common carrier materials, the gypsum carrier has low strength and low fragrance absorption rate of the silica gel carrier, and the porous ceramic carrier becomes a preferable fragrance carrier material due to excellent mechanical strength, stable physicochemical characteristics, strong essence adsorptivity and excellent decorative effect. The ceramic material absorbs a sufficient amount of the fragrance liquid, so that the fragrance liquid can be slowly diffused for a long time, but after the fragrance substance is absorbed by the common ceramic, the common ceramic permeates into the ceramic product with the porous structure, and the fragrance liquid is stored by utilizing pores, but the fragrance substance is released too quickly. In addition, some high-end users require to use colored ceramic carriers, and color materials with different colors are matched with ceramics, so that the ceramic has a unique decorative effect and can be applied to different occasions. At present, the method for preparing the porous ceramics is various, such as a particle stacking method, a pore-forming agent method, an extrusion molding method, a foam dipping method, a foaming method and the like, but most of the processes are complex and the cost is high. For example, in Chinese patent, publication No. CN111807861A provides a porous ceramic, a dry pressing method is used, the manufacturing process is complicated, the final porosity and the fragrance release time of the prepared ceramic cannot be considered, meanwhile, solid fragrance substances are adopted for melting and dipping, the fragrance absorption difficulty is increased, and as in the multistage-pore fragrance slow-release ceramic disclosed in publication No. CN115893979A, a porous ceramic matrix is prepared by using a dry pressing method, whisker reinforced microporous ceramic slurry is prepared and sprayed on the surface of the porous ceramic matrix, and the composite body is obtained after drying treatment, so that the process is complex, the design of the product is complex, and the porosity of the finally obtained porous ceramic matrix is only about 30%. In addition, in order to meet the requirement of high-end users on using colored ceramic carriers, the prior art generally dyes the finished ceramic products with fragrance, but the coloring agent can be gradually decomposed along with the increase of the service time, and after the coloring material is added into the raw materials, the porosity and the fragrance absorption rate of the ceramic materials can be influenced when the coloring material participates in the sintering process. In summary, the application aims to solve the problems of complex preparation process, low porosity and low fragrance absorption rate of the fragrance ceramic material in the prior art. Disclosure of Invention The invention aims at providing a fragrance slow-release ceramic material and a preparation method thereof, aiming at the defects of the prior art. The invention relates to a preparation method of a fragrance slow-release ceramic material, which comprises the following steps: S1, uniformly mixing the weighed flaky alumina and calcined kaolin powder; S2, heating and stirring the powder, adding the liquid paraffin and the additive after thermal state melting, and stirring for a period of time to obtain ceramic slurry;