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In-situ polymerization technology for preparing anti-settling luminous acrylic resin

An in-situ polymerization and acrylic acid technology, which is applied to the treatment of luminescent materials, luminescent coatings, and dyed organosilicon compounds, can solve problems such as poor storage stability, easy sedimentation, and unstable luminous coatings, and achieve uniform luminous brightness. Simple, outstanding anti-sedimentation effect

Inactive Publication Date: 2010-06-16
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high density of aluminates, when they are added to the coating resin, they are prone to sedimentation, which will lead to the instability of the luminous coating, and the problem of uneven luminous brightness will appear when spraying on the surface of the product. At the same time, the storage stability is also low. poor
At present, the research on long-lasting luminescent materials mainly focuses on improving water resistance, high temperature resistance, compatibility, etc., but there are no research reports on how to improve the anti-settling property in coatings.

Method used

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  • In-situ polymerization technology for preparing anti-settling luminous acrylic resin
  • In-situ polymerization technology for preparing anti-settling luminous acrylic resin

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Embodiment 1: the surface-modified luminous powder can be obtained according to the following method:

[0033] ① Add 6 parts of 400-mesh luminous powder to 58 parts of absolute ethanol in parts by weight, disperse by ultrasonic wave for 20 minutes, add 2 parts of γ-(methacryloyloxy)propyltrimethoxysilane, stir evenly, and add concentration 1 mol / L dilute H 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 modified luminous powder.

[0034] ② 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, and add concentration 1 mol / L dilute H 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 obt...

Embodiment 2

[0036] Example 2: Take a certain proportion of acrylic acid monomer (15 parts of MMA, 10 parts of BA, 5 parts of MA), an appropriate amount of initiator BOP, and 30 parts of xylene, and react in a constant temperature heating stirrer at 80°C. First polymerize for 20 minutes to form a prepolymer; then add 1 part of modified luminous powder, continue the polymerization until the solid content of the resin is about 50%, and then discharge. All the other are with embodiment 1.

Embodiment 3

[0037] Example 3: Take a certain proportion of acrylic acid monomer (17.5 parts of MMA, 17.5 parts of BA, 5 parts of MA), an appropriate amount of initiator BOP, and 30 parts of xylene, and react in a constant temperature heating stirrer at 80°C. First polymerize for 20 minutes to form a prepolymer; then add 1 part of modified luminous powder, continue the polymerization until the solid content of the resin is about 50%, and then discharge. All the other are with embodiment 1.

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Abstract

The invention relates to a novel method for preparing anti-settling luminous acrylic resin by in-situ polymerization technology. For overcoming the defect that inorganic salt fluorescent powder (alkaline earth aluminates) is susceptible to settlement after being added in paint resin because of higher density, the method adopts a vinylsilane agent to modify the surface of the fluorescent powder first, and then prepares the acrylic resin with the fluorescent powder by using the in-situ polymerization technology. The invention has the advantages that: the luminous resin prepared by the in-situ polymerization technology makes the fluorescent powder bonded with macromolecular chains in the resin through chemical bonds so that the fluorescent powder is uniformly distributed and agglomeration is avoided and the anti-settling performance is obviously improved; and simultaneously the instability of a luminous paint is effectively improved, and the problem of nonuniform luminous brightness of the luminous coating sprayed on the surface of a product.

Description

technical field [0001] The invention belongs to the field of luminescent materials and coatings, and relates to a new method for preparing acrylic luminous resin with remarkable anti-sedimentation performance through in-situ polymerization technology. Background technique [0002] Long-lasting luminescent materials (luminous powder) represented by rare earth-doped alkaline earth aluminates are mainly used for low-light indicator lighting, decoration and arts and crafts in dark environments, and are widely used in coatings, ceramics, plastics and other industries. Due to the high density of aluminates, when they are added to the coating resin, they are prone to sedimentation, which will lead to the instability of the luminous coating, and the problem of uneven luminous brightness will appear when spraying on the surface of the product. At the same time, the storage stability is also low. poor. At present, the research on long-lasting luminescent materials is mainly focused o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/04C08F220/14C08F220/18C08F220/06C08K9/10C08K9/06C08K3/24C09C1/40C09C3/12C09K11/64C09D151/00C09D5/22
Inventor 郭斌银鹏徐杰吴俊楠
Owner NANJING FORESTRY UNIV
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