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Ultraviolet curing magnetic roller coating with strong adhesive force and preparation method thereof

A technology with strong adhesion and UV, applied in the field of coatings, can solve the problems of large shrinkage and low adhesion of metal layers, and achieve the effect of improving adhesion

Inactive Publication Date: 2020-06-16
中山市锝力打印机设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, UV-curable coatings have a large shrinkage rate during curing, especially when high-functionality urethane acrylate is used. On the one hand, the abrasion resistance of the coating film is improved, but at the same time, the higher the cross-linking density, the greater the shrinkage rate, resulting in UV Cured paint produces less adhesion to the metal layer

Method used

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  • Ultraviolet curing magnetic roller coating with strong adhesive force and preparation method thereof

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Effect test

Embodiment 1

[0023] 25 parts of polyurethane acrylate (functionality 5), 4 parts of trimethylolpropane triacrylate, 5 parts of benzoin dimethyl ether, 15 parts of conductive carbon black, 14 parts of tin oxide, 0.7 parts of polysiloxane, polyether Modified polydimethylsiloxane leveling agent 0.6 parts, chitosan (deacetylation degree ≥ 80%, molecular weight 50KDa) 0.5 parts, glass microspheres 1.2 parts, hydroxyethyl methacrylate phosphate 2 parts, 0.15 parts of N-methylpyrrolidone BYK-410 of modified polyurea, 2.5 parts of ethylene vinyl acetate copolymer (vinyl acetate content is 12% to 24%).

[0024] Above-mentioned coating preparation method is as follows:

[0025] 1) Weigh and mix the polyurethane acrylate, trimethylolpropane triacrylate and photoinitiator in the above parts by weight, and stir at 1500 rpm for 20 minutes for later use.

[0026] 2) Weigh the above weight parts of chitosan, hydroxyethyl methacrylate phosphate and ethylene vinyl acetate copolymer and mix at 1000rpm for 2...

Embodiment 2

[0029] 20 parts of polyurethane acrylate (functionality 3), 8 parts of trimethylolpropane triacrylate, 2 parts of 1-hydroxy-cyclohexyl-phenyl ketone, 18 parts of conductive carbon black, 12 parts of tin oxide, polysilicon 0.8 parts of oxane, 0.4 parts of alkyl modified organosiloxane leveling agent, 1.2 parts of chitosan (deacetylation degree ≥ 80%, molecular weight of 100KDa), 0.5 parts of glass microspheres, hydroxyethyl methacrylate 3 parts of phosphate ester, 0.05 part of N-methylpyrrolidone BYK-410 of modified polyurea, 4 parts of ethylene vinyl acetate copolymer (vinyl acetate content is 12% to 24%).

[0030] The preparation method of above-mentioned coating is the same as embodiment 1.

Embodiment 3

[0032] 30 parts of polyurethane acrylate (functionality 4), 0.1 part of trimethylolpropane triacrylate, 6 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 12 parts of conductive carbon black, oxidation 16 parts of tin, 0.6 parts of polysiloxane, 0.8 parts of polyether modified polydimethylsiloxane leveling agent, 0.25 parts of chitosan (deacetylation degree ≥ 80%, molecular weight 150KDa), glass beads 2 1 part, 1 part of hydroxyethyl methacrylate phosphate, 0.3 part of N-methylpyrrolidone BYK-410 of modified polyurea, 1 part of ethylene vinyl acetate copolymer (vinyl acetate content is 12% to 24%).

[0033] The preparation method of above-mentioned coating is the same as embodiment 1.

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Abstract

The invention relates to coating, in particular to ultraviolet curing magnetic roller coating with high adhesive force and a preparation method thereof. The coating comprises, by weight, 15 to 35 parts of urethane acrylate, 0.01 to 10 parts of trimethylolpropane triacrylate, 1 to 8 parts of a photoinitiator, 10 to 20 parts of conductive carbon black, 8 to 18 parts of tin oxide, 0.4 to 1 part of polysiloxane, 0.2 to 1 part of a leveling agent, 0.1 to 1.5 parts of chitosan, 0.2 to 2.5 parts of glass beads, 0.5 to 5 parts of hydroxyethyl methacrylate phosphate, 0.01 to 0.4 part of modified polyurea N-methyl-2-pyrrolidone BYK-410 and 0.5 to 5 parts of an ethylene-vinyl acetate copolymer. The coating provided by the invention has the characteristics of strong adhesion to a magnetic roller substrate, good flexibility, conductivity, wear resistance and fast ultraviolet curing.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an ultraviolet curing magnetic roller coating with strong adhesion and a preparation method thereof. Background technique [0002] At present, the magnetic roller is an aluminum casing with a magnetic core inside. The outside of the casing is first sprayed with glue, then sprayed with powder, and then baked in an oven to make the surface of the casing. Now there are two new solutions. One is that the aluminum casing does not need to be sprayed with glue and powder, and the surface of the aluminum casing is directly corroded with chemicals to obtain a rough and uniform non-smooth surface of the magnetic roller. This method is environmentally friendly. The problem is relatively small; the second is direct powder spraying, which is equivalent to the integration of powder and glue. One spraying is successful, and there is no need for oven baking, and it is cured by ultraviolet radiation to ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/63C09D7/65
CPCC08L2205/035C09D7/63C09D7/65C09D175/14C08L5/08C08L23/0853C08K13/04C08K5/521
Inventor 裴永刚黄有吴猛
Owner 中山市锝力打印机设备有限公司
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