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Preparation method for anti-settling flocculent organic polymer clad noctilucent powder

An organic polymer, luminous powder technology, applied in chemical instruments and methods, luminescent coatings, luminescent materials, etc., can solve the problem of low anti-settling effect, and achieve the effects of enhanced water resistance and simple preparation process

Inactive Publication Date: 2010-03-31
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of inorganic coating (such as: silica coating) can improve water resistance, but it has little effect on improving anti-sedimentation; since the density of organic polymers is lower than that of inorganic salts, organic polymers are used to coat luminous powder Surface, is one of the effective ways to improve its anti-sedimentation in the coating system

Method used

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  • Preparation method for anti-settling flocculent organic polymer clad noctilucent powder
  • Preparation method for anti-settling flocculent organic polymer clad noctilucent powder

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: An anti-sedimentation cotton-like organic polymer-coated luminous powder can be obtained according to the following method: add 6 parts of 400-mesh luminous powder to 58 parts of absolute ethanol in parts by weight, ultrasonically disperse for 20 minutes, add 2 parts of γ-(methacryloyloxy)propyltrimethoxysilane, stir evenly, add dilute H at a concentration of 1 mol / L 2 SO 4 When the pH is 1, transfer to a constant temperature heating magnetic stirrer, react at 70°C for 4 hours, filter with suction, and dry at 80°C for 1 hour to obtain coated luminous powder.

Embodiment 2

[0028] Example 2: An anti-sedimentation cotton-like organic polymer-coated luminous powder can be obtained according to the following method: add 7.5 parts of 400-mesh luminous powder to 73 parts of absolute ethanol in parts by weight, ultrasonically disperse for 20 minutes, add 2.5 parts of γ-(methacryloyloxy)propyltrimethoxysilane, stir evenly, add dilute H at a concentration of 1 mol / L 2 SO 4 When the pH is 1, transfer to a constant temperature heating magnetic stirrer, react at 70°C for 4 hours, filter with suction, and dry at 80°C for 1 hour to obtain coated luminous powder.

Embodiment 3

[0029] Example 3: An anti-sedimentation cotton wool-like organic polymer coated luminous powder can be obtained according to the following method: add 9 parts of 400 mesh luminous powder to 88 parts of absolute ethanol in parts by weight, ultrasonically disperse for 20 minutes, add 3 parts of γ-(methacryloyloxy)propyltrimethoxysilane, stir evenly, add dilute H with a concentration of 1 mol / liter dropwise 2 SO 4 When the pH is 1, transfer to a constant temperature heating magnetic stirrer, react at 70°C for 4 hours, filter with suction, and dry at 80°C for 1 hour to obtain coated luminous powder.

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Abstract

The invention belongs to the fields of luminous materials and dope, and relates to a method for performing organic polymer modification on the surface of noctilucent powder (a long-afterglow luminousmaterial of an alkaline-earth aluminate system). The method aims at the defects of poor storage stability of a dope system and influence on subsequent application due to large density and easy sedimentation of the noctilucent powder; a specific vinyl silane coupling agent is adopted; an organic polymer clad body with an obvious flocculent loose structure is obtained by selecting a reaction mediumand controlling the pH value; the anti-settling performance of the organic polymer clad body is effectively improved; meanwhile, the water resistance is obviously improved; the organic polymer clad body can be widely applied to an aqueous and solvent type dope system; and moreover, the method has the wide application prospect in the fields of plastic, printing ink, chemical fiber, resin and the like.

Description

technical field [0001] The invention belongs to the field of luminescent materials and coatings, and relates to a method for polymer modification and modification on the surface of luminous powder (long-lasting luminescent material of alkaline earth aluminate system), which can effectively improve the anti-sedimentation in water-based and solvent-based coatings performance. Background technique [0002] The long-lasting luminescent material can be used as an additive pigment in various transparent or translucent media, such as plastics, paints, glazes, inks, chemical fibers, resins, etc., to prepare luminescent products. Long afterglow luminescent materials and products can show good indication effects and beautification effects in dark places, can effectively save energy, and are widely used; at the same time, the application and development of this material are also very important for the "energy saving and emission reduction" advocated by today's society. positive meanin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80C09D5/22C09D7/12
Inventor 郭斌徐杰银鹏
Owner NANJING FORESTRY UNIV
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