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CN-118667381-B - Black organic-inorganic hybrid ink and preparation method and application thereof

CN118667381BCN 118667381 BCN118667381 BCN 118667381BCN-118667381-B

Abstract

The invention discloses a black organic-inorganic hybrid ink and a preparation method and application thereof, and belongs to the technical field of ink, wherein the black organic-inorganic hybrid ink is prepared from, by weight, 40-50 parts of organic-inorganic hybrid resin, 5-10 parts of organic silicon resin, 8-10 parts of diluted film forming control auxiliary agent, 5-10 parts of mica powder, 20-26 parts of black pigment, 1-3 parts of filler, 0.5-1.5 parts of leveling agent, 2-4 parts of anti-settling agent and 0.2-0.5 part of defoaming agent, wherein the black pigment is prepared by dissolving 5-8 parts of carbon black, 8-10 parts of copper-chromium black, 5-8 parts of aluminum dihydrogen phosphate and 1-2 parts of kaolin in a mixed solution of water and ethanol, heating, dispersing and drying. The black organic-inorganic hybrid ink belongs to the category of medium-temperature ink, has easily obtained raw materials and high temperature resistance of 500 ℃, can avoid the problems of ink peeling, carbonization, blushing and the like after long-term use, and is suitable for various base materials and various printing processes.

Inventors

  • WU HAIZHONG
  • Jia Renqiang

Assignees

  • 宁波海燕新材料有限公司

Dates

Publication Date
20260508
Application Date
20240619

Claims (6)

  1. 1. The black organic-inorganic hybrid ink is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of organic-inorganic hybrid resin; 5-10 parts of organic silicon resin; 8-10 parts of diluted film forming control auxiliary agent; 5-10 parts of mica powder; 20-26 parts of black pigment; 1-3 parts of filler; 0.5-1.5 parts of leveling agent; 2-4 parts of anti-settling agent; 0.2-0.5 part of defoaming agent; The black pigment is prepared by dissolving 5-8 parts of carbon black, 8-10 parts of copper-chromium black, 5-8 parts of aluminum dihydrogen phosphate and 1-2 parts of kaolin in a mixed solution of water and ethanol, heating, dispersing and drying; the organic-inorganic hybrid resin is organic silicon hybrid resin or polyester modified organic silicon resin; The organic silicon resin is methyl phenyl polysiloxane resin; In the preparation process of the black pigment, the heating temperature is 50-100 ℃ and the heating time is 1-1.5h, and a dispersing machine is used for stirring to prevent caking in the dispersing process; The anti-settling agent is aerosil and/or bentonite.
  2. 2. The black organic-inorganic hybrid ink according to claim 1, wherein the diluted film forming control auxiliary agent is ethylene glycol tertiary butyl ether, xylene or n-butyl ester.
  3. 3. The black organic-inorganic hybrid ink according to claim 1, wherein the filler is boron carbide, silicon nitride or spodumene.
  4. 4. A method for preparing a black organic-inorganic hybrid ink according to any one of claims 1 to 3, comprising the steps of: Mixing the organic-inorganic hybrid resin, the organic silicon resin, the diluted film forming control auxiliary agent, the mica powder, the black pigment, the filler, the flatting agent, the anti-settling agent and the defoaming agent according to the selected weight parts, stirring and dispersing at a high speed, and grinding to prepare the black organic-inorganic hybrid ink.
  5. 5. Use of a black organic-inorganic hybrid ink according to any of claims 1-3 in the printing field.
  6. 6. A method for printing by using the black organic-inorganic hybrid ink according to any one of claims 1-3, which is characterized in that a printing base material is soda lime glass or high borosilicate glass, the black organic-inorganic hybrid ink is subjected to screen printing by using 200-500 meshes, the printing thickness is maintained at 5-10 mu m, and then the printing is completed by curing and forming at a high temperature of 280-330 ℃ for 25-35 min.

Description

Black organic-inorganic hybrid ink and preparation method and application thereof Technical Field The invention relates to the technical field of ink, in particular to black organic-inorganic hybrid ink, and a preparation method and application thereof. Background The printing ink is an indispensable important material in the printing process, can display patterns and characters on a printing stock through a printing or spray painting technology, and is widely applied in the printing field, the coating field, the packaging field, the household appliance field and the like. Taking the field of home appliances as an example, on one hand, the ink affects the appearance and design of the home appliances, and on the other hand, the ink is related to whether the marks of the home appliances are clear, whether the button operation is convenient or not, and the like. The use environments of household appliances are various, so that the requirements on the performances of weather resistance, wear resistance, chemical corrosion resistance and the like of the ink are also raised. In the specific home glass industry, inks used in home glass are generally classified into low-temperature, medium-temperature and high-temperature inks according to their heat resistance. The low-temperature ink is generally resistant to the temperature of within 200 ℃, and only needs to be baked at about 200 ℃ for surface drying after screen printing, so that the low-temperature ink is rich in optional colors and suitable for various scenes. The high-temperature ink has the advantages that the high-temperature ink can resist 600 ℃, does not change color after being baked for a long time, is different from other ink components, is added with a large amount of glass powder in the production process, is melted with the softened glass surface after being subjected to toughening treatment at 650-700 ℃ after screen printing, and has the characteristic of high hardness and incapability of scraping. The medium-temperature ink has the temperature resistance between that of low-temperature ink and high-temperature ink, can resist the high temperature of 250-350 ℃, and is most commonly used in printing processes of high borosilicate glass and the like of a partition board in a microwave oven. With the continuous improvement of the scientific and technical level and the development of various industries, higher requirements are put forward on the high temperature resistance, universality on various base materials and the like of the ink. Taking high borosilicate glass as an example, the heat resistance of the bottom heating wire is increased from 350 ℃ to 500 ℃, but the conventional medium-temperature ink cannot be matched with the high temperature of 500 ℃, and a series of problems such as ink peeling, carbonization, blushing and the like can be faced when the ink is used for a long time. Therefore, there is a need to develop new inks to improve the high temperature resistance of the inks and their versatility on a variety of substrates. The Chinese patent document with publication number CN104419246A discloses a high-temperature resistant ink and a preparation method thereof, wherein the raw materials comprise 15% -30% of organic resin, 3% -25% of solvent, 25% -55% of modified pigment, 1% -10% of filler, 0.1% -5% of leveling agent and 0.1% -5% of dispersing agent, and the modified pigment consists of pigment and low-melting-point lead-free glass powder coated outside the pigment and modified by a silane coupling agent. The product ink prepared by the invention can be solidified under the medium and low temperature conditions, and is matched with the processing temperature of the medium-temperature glass ink, and in actual use, the highest temperature resistance can only reach 350 ℃, and the higher temperature resistance requirement can not be met. The Chinese patent document with the publication number of CN117567902A discloses high-temperature resistant ink which comprises, by weight, 10-30 parts of silicone resin, 15-25 parts of polyester modified methyl phenyl silicone resin, 2-8 parts of mica powder, 3-15 parts of titanium dioxide, 5-7 parts of octyl phenol polyoxyethylene ether, 10-15 parts of absolute ethyl alcohol, 2-6 parts of glycol monostearate, 10-15 parts of nano SiO 2, 1.5-4 parts of talcum powder, 2-6 parts of glass powder, 7-12 parts of chitosan, 0.7-2.5 parts of adhesion promoter, 1.0-2.0 parts of antistatic agent, 5-10 parts of matting agent, 0.2-0.4 parts of defoamer, 0.5-1.0 parts of flatting agent and 1.5-3 parts of high-temperature resistant auxiliary agent. The ink has good wear resistance and adhesiveness while ensuring high temperature resistance. However, the expansion coefficient of the modified methyl phenyl silicone resin is not matched with that of the high borosilicate glass, and the modified methyl phenyl silicone resin is only limited to be applied to the spray printing technology, but cannot be applied to screen print