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CN-122006773-A - Composite material capable of continuously releasing anions, removing formaldehyde and peculiar smell and having high far infrared emissivity and preparation method thereof

CN122006773ACN 122006773 ACN122006773 ACN 122006773ACN-122006773-A

Abstract

The invention relates to a multifunctional environment-purifying composite material, in particular to a composite material which does not depend on rare earth oxide, can release negative ions continuously, can remove formaldehyde and peculiar smell efficiently and has high far infrared emissivity and a preparation method thereof. The composite material comprises the following raw materials, by mass, 25-50% of silicon carbide, 20-45% of titanium dioxide, 10-25% of zinc oxide and 10-25% of a composite negative ion accelerator, wherein the composite negative ion accelerator is formed by compounding germanium-containing mineral powder or rare earth mineral powder and alkaline earth metal carbonate according to a mass ratio of (0.5-2): 1. The invention can realize stable negative ion release (more than or equal to 5000 ions/cm < 3 >), high far infrared emissivity (more than or equal to 0.90) and efficient formaldehyde degradation (more than or equal to 90% in 24 hours) under normal temperature and normal pressure through the synergistic effect of the components. The product has the advantages of easily available raw materials, low cost and simple process, is suitable for various base materials such as paint, ceramics, plastics, textiles and the like, and has wide application prospect.

Inventors

  • JING JIECHUN

Assignees

  • 青岛阿兰贝尔科技发展有限公司

Dates

Publication Date
20260512
Application Date
20260128

Claims (10)

  1. 1. The composite material capable of continuously releasing anions, removing formaldehyde and peculiar smell and having high far infrared emissivity is characterized by comprising, by mass, 25-50% of silicon carbide, 20-45% of titanium dioxide, 10-25% of zinc oxide and 10-25% of a composite anion accelerator, wherein the composite anion accelerator is formed by compounding germanium-containing mineral powder or rare earth mineral powder and alkaline earth metal carbonate according to a mass ratio of (0.5-2): 1.
  2. 2. The composite material of claim 1, wherein the silicon carbide has a particle size D50 of 1-10 μm and the boron nitride has a particle size D50 of 1-10 μm.
  3. 3. The composite material according to claim 1, wherein the titanium dioxide has a particle diameter D50 of 0.1 to 1 μm and the zinc oxide has a particle diameter D50 of 0.1 to 1 μm.
  4. 4. The composite material according to claim 1, wherein the composite negative ion accelerator has an overall particle diameter d50≤5 μm.
  5. 5. A method of preparing a composite material according to any one of claims 1 to 4, comprising the steps of: S1, raw material preparation, namely weighing the raw materials according to a proportion, and premixing natural germanite powder or purified rare earth tailing composite powder and calcium carbonate according to a mass ratio of 1:1 to prepare a composite negative ion accelerator; s2, premixing, namely adding silicon carbide, boron nitride, titanium dioxide, zinc oxide and the composite negative ion accelerator prepared in the step S1 into a mixer, and mixing at a low speed for 20-30 minutes; s3, grinding, namely transferring the premixed materials into a ball mill, wherein the ball-material ratio is 2:1, and grinding at the rotating speed of 50 rpm; And S4, sieving, namely sieving the ground material through a 200-mesh screen to obtain the composite material.
  6. 6. The method according to claim 5, wherein the mixing in step S2 is performed by using a V-type mixer, and the mixing speed is controlled to 20-30rpm.
  7. 7. The method according to claim 5, wherein the grinding medium in the step S3 is zirconia balls, and the temperature of the material is controlled to be less than or equal to 40 ℃ by a cooling measure in the grinding process.
  8. 8. Use of a composite material according to any one of claims 1-4 for the preparation of an environmental purification or health care functional article, wherein the article comprises one or more of a paint, a lacquer, an ink, a ceramic, a plastic, leather, wallpaper or a textile.
  9. 9. The use according to claim 8, wherein when the article is a coating, paint or ink, the composite is added in an amount of 1-5% of the total mass of the substrate.
  10. 10. Use according to claim 8, wherein the composite material is mixed with the substrate in use by mechanical stirring at 500-1000rpm for 10-20 minutes.

Description

Composite material capable of continuously releasing anions, removing formaldehyde and peculiar smell and having high far infrared emissivity and preparation method thereof Technical Field The invention relates to the technical field of environmental functional materials, in particular to a composite material capable of continuously releasing anions, removing formaldehyde and peculiar smell and having high far infrared emissivity and a preparation method thereof. Background With the improvement of indoor air quality and life health attention of people, the material demand with the environment purification function is growing. At present, the common photocatalysis material (such as nano TiO 2) in the market can effectively degrade pollutants under the irradiation of ultraviolet rays, and the efficiency is obviously reduced under the dark or weak light environment. In addition, some materials with negative ion release function are mostly dependent on rare earth oxide (such as cerium oxide) as an excitation source, but rare earth resources are rare, the price is high, and the uncertainty exists in a supply chain. Far infrared materials, such as silicon carbide, boron nitride and the like, are widely applied to the field of health care physiotherapy due to good heat radiation performance, but single far infrared materials have limited functions, and are difficult to meet the diversified environmental purification requirements. In the prior art, although the combination of the negative ion release and the far infrared function is tried, the problems of unstable negative ion release, poor environmental adaptability, single function, high cost and the like often exist. Therefore, developing a low-cost composite material which can efficiently and continuously release anions, effectively remove formaldehyde and peculiar smell and has high far infrared emissivity under the conditions of no rare earth dependence, weak light or room temperature becomes a technical problem to be solved in the field. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide a composite material which does not need rare earth oxide, has low cost and strong environmental adaptability and integrates functions and a preparation method thereof. The composite material capable of continuously releasing anions, removing formaldehyde and peculiar smell and having high far infrared emissivity comprises, by mass, 20-40% of silicon carbide, 10-30% of boron nitride, 15-30% of titanium dioxide, 10-25% of zinc oxide and 10-25% of a composite anion accelerator, wherein the composite anion accelerator is formed by compounding germanium-containing mineral powder or rare earth mineral powder and alkaline earth metal carbonate according to a mass ratio of (0.5-2): 1, preferably 30% of silicon carbide, 20% of boron nitride, 20% of titanium dioxide, 15% of zinc oxide and 15% of a composite anion accelerator. The composite negative ion accelerator is prepared by premixing natural germanite powder (or purified rare earth tailing composite powder) and calcium carbonate according to a mass ratio of 1:1. Further, the purity of the silicon carbide is more than or equal to 98%, the grain diameter D50 is 1-10 mu m, the purity of the boron nitride is more than or equal to 98%, and the grain diameter D50 is 1-10 mu m. Further, the titanium dioxide is anatase type, the purity is more than or equal to 99%, the particle size D50 is 0.1-1 mu m, the purity of the zinc oxide is more than or equal to 99%, and the particle size D50 is 0.1-1 mu m. Furthermore, the overall particle size D50 of the composite negative ion accelerator is less than or equal to 5 mu m, and the radionuclide limit meets the requirements of class A materials in GB 6566-2010 building material radionuclide limit. A method of preparing a composite material as claimed in any one of the preceding claims, comprising the steps of: S1, raw material preparation, namely weighing the raw materials according to a proportion, and premixing natural germanite powder or purified rare earth tailing composite powder and calcium carbonate according to a mass ratio of 1:1 to prepare a composite negative ion accelerator; s2, premixing, namely adding silicon carbide, boron nitride, titanium dioxide, zinc oxide and the composite negative ion accelerator prepared in the step S1 into a mixer, and mixing at a low speed for 20-30 minutes; S3, grinding, namely transferring the premixed materials into a ball mill, taking zirconia balls as grinding media, wherein the ball-material ratio is 2:1, and grinding at the rotating speed of 50rpm, preferably 2 hours; And S4, sieving, namely sieving the ground material through a 200-mesh screen to obtain the composite material. Further, the mixing in the step S2 is performed by using a V-type mixer, and the mixing rotating speed is controlled to be 20-30rpm. Further, in the step S3, the grinding medium is zirconia balls, and the temperature of the materia