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Preparation method of chromium oxide-based polishing synthetic paper

A chromium oxide-based, synthetic paper technology, applied in the field of organic-inorganic hybrid materials, can solve the problems of scratches, low grinding efficiency of polishing powder, etc., and achieve the effects of simple use process, good mechanical properties, and easy availability of materials

Inactive Publication Date: 2020-05-05
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polishing powder has low grinding efficiency, and its particle shape has a great influence on the polishing effect. The angular and irregular particles are easy to form scratches on the surface of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Weigh 5 kg of polyester-type thermoplastic polyurethane particles with a Shore hardness of 85A and 27 kg of N,N-dimethylformamide in a reactor, mix them uniformly and let stand for 72 hours to prepare a polyurethane solution;

[0025] (2) Add 5.6 kg of chromium oxide powder with a fineness of 1000 mesh to the polyurethane solution obtained in step (1), and stir evenly with a high-speed stirrer to obtain a solid-liquid mixture, and let stand for 6 hours to defoam;

[0026] (3) Apply the solid-liquid mixture obtained in step (2) evenly on the glass plate;

[0027] (4) Immerse the glass plate in a water-based styrene-acrylic emulsion with a mass percentage of 2% (at a temperature of 25°C). After the solid-liquid mixture is completely solidified and forms a film, dry it in a freeze dryer for 4 hours. The thickness of the solid-liquid mixture on the glass plate is used to control the total thickness of the film to 0.18mm, and then the film is peeled off from the glass pl...

Embodiment 2

[0032] (1) Weigh 6 kilograms of polyester thermoplastic polyurethane particles with a Shore hardness of 88A and 25.5 kilograms of N,N-dimethylformamide in a reactor, mix them uniformly and let stand for 72 hours to prepare a polyurethane solution;

[0033] (2) Add 6.3 kg of chromium oxide powder with a particle size of 1200 mesh to the polyurethane solution obtained in step (1), and stir evenly with a high-speed stirrer to obtain a solid-liquid mixture, and let stand for 6 hours to defoam;

[0034] (3) Apply the solid-liquid mixture obtained in step (2) evenly on the glass plate;

[0035] (4) Immerse the glass plate in a water-based styrene-acrylic emulsion with a mass percentage of 2% (at a temperature of 25°C). After the solid-liquid mixture is completely solidified and forms a film, dry it in a freeze dryer for 6 hours. The thickness of the solid-liquid mixture on the glass plate is used to control the total thickness of the film to 0.24mm, and then the film is peeled off f...

Embodiment 3

[0040] (1) Weigh 8.8 kg of polyether-type thermoplastic polyurethane particles with a Shore hardness of 90A, and 30.61 kg of N,N-dimethylacetamide, mix them uniformly in a reactor and let stand for 72 hours to prepare a polyurethane solution;

[0041] (2) Add 6.12 kg of chromium oxide powder with a fineness of 1500 mesh to the polyurethane solution obtained in step (1), and stir evenly with a high-speed stirrer to obtain a solid-liquid mixture, and let it stand for 8 hours to defoam;

[0042] (3) Apply the solid-liquid mixture obtained in step (2) evenly on the glass plate;

[0043] (4) Immerse the glass plate in a water-based styrene-acrylic emulsion with a mass percentage of 3% (at a temperature of 25°C). After the solid-liquid mixture is completely solidified into a film, dry it in a freeze dryer for 6 hours. The thickness of the solid-liquid mixture on the glass plate is used to control the total thickness of the film to 0.30mm, and then the film is peeled off from the gla...

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Abstract

The invention discloses a preparation method of chromium oxide-based polishing synthetic paper. The method comprises the following steps: dissolving thermoplastic polyurethane particles in a solvent to obtain a polyurethane solution, adding chromium oxide powder into the polyurethane solution, stirring at a high speed to obtain a solid-liquid mixture, carrying out vacuum defoaming treatment, coating a glass plate with the solid-liquid mixture, immersing the glass plate in a water-based styrene-acrylic emulsion, curing to form a film, drying, and stripping the film to obtain the chromium oxide-based polishing synthetic paper. The material is easy to obtain, simple and easy to implement, low in equipment requirement, safe, reliable and low in cost, the obtained synthetic paper has good mechanical property, the using process is simple and convenient, and the synthetic paper can be directly applied to polishing paper to polish the surface of a device; secondary pollution to the surface ofa polished device is avoided in the operation process, cleaning operation is not needed after the device is polished, chromium oxide particles in the obtained synthetic paper can achieve the polishingeffect of mechanical polishing on the surface of the device, and sand holes, burrs and the like on the surface of the device are effectively removed; the styrene-acrylic emulsion component in the polishing synthetic paper can generate a glazing effect on a device in the polishing process.

Description

technical field [0001] The invention relates to organic-inorganic hybrid materials, in particular to a preparation method of chromium oxide-based polished synthetic paper. Background technique [0002] Polishing refers to the use of mechanical or chemical processes to reduce the surface roughness of materials to obtain a bright and smooth surface. At present, the existing polishing means mainly utilize polishing liquid and polishing powder for polishing. The polishing liquid is mainly a water-soluble polishing agent, which has good degreasing and gloss-enhancing properties, but most polishing liquids contain acidic substances such as sulfuric acid, hydrochloric acid, and nitric acid, which have a certain corrosive effect on the surface of the material. The polishing powder has low grinding efficiency, and its particle shape has a great influence on the polishing effect. The angular and irregular particles are easy to form scratches on the surface of the material. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L75/08C08L25/14C08K3/22C08J5/18
CPCC08J5/18C08J2375/06C08J2375/08C08J2425/14C08K2003/2251
Inventor 郭霖袁正求单丹
Owner HUNAN UNIV OF SCI & TECH