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Ionic liquid modified bar code carbon strip back coating and preparation method thereof

A technology of ionic liquid and back coating, which is used in replication/marking methods, coatings, fire-resistant coatings, etc., can solve the problems of difficult product quality control, damage to the insulation of the print head, low system viscosity, etc., and saves batching equipment. and manpower input, maintain cleanliness and insulation, and achieve uniform coating and film formation.

Inactive Publication Date: 2018-09-04
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small particle size of carbon nanotubes, they are easy to agglomerate in the back coating coating system, and the dispersion after agglomeration is extremely difficult, especially when compatible with polymer back coating materials, in order to ensure that the long chain of the polymer coating itself does not Chain breakage occurs, and high-speed shearing and stirring cannot be carried out together. The batching process is affected by the polarity of the dispersion system, temperature, humidity, and dust in the air, so it is difficult to control product quality; The concentration of the substance is as high as 6-15%, the viscosity of the system is low, and the carbon nanotubes are prone to agglomeration and sedimentation. Therefore, the coating needs to be prepared and used immediately, and it is difficult to store for a long time; Under the printing state conditions, it will inevitably fall off and stick to the printer probe, seriously damaging the insulation of the print head

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A preparation method of ionic liquid modified type bar code carbon tape back coating coating includes the following steps:

[0032] Step 1. Take 0.5-2 parts of silane coupling agent monomer, 15-30 parts of organosilicon and 13-30 parts of organic solvent into the double-layer reactor according to parts by weight, and control the temperature in the reactor under stirring conditions Raise it to 80-90℃, and carry out reflux reaction at this temperature for 1-3h, and then control the temperature in the reactor to decrease to 70-80℃;

[0033] Step 2. Take 10-50 parts of acrylic monomers and 0.5-3 parts of ionic liquid containing double bonds according to parts by weight. After mixing them evenly, add 0.5-2 parts of catalyst AIBN and 0-43.5 parts of organic solvent to them , After mixing thoroughly, the mixed additives are obtained for use;

[0034] Step 3. Keep the temperature of the reaction kettle at 70-80°C and start dripping. Add the mixed additives prepared in step 2 to the r...

Embodiment 1

[0037] Step 1. Take 200 g of acrylic triethoxy silane, 6 kg of dihydroxy polysiloxane with 1% hydroxyl content, 20 kg of butyl acetate (w): methyl ethyl ketone (w) = 3:1 mixed solvent , After mixing uniformly, heat up to 90 ℃, keep for 1 hour, and cool down to 80 ℃;

[0038] Step two, 400 g styrene, 1.2 kg cyclohexyl methacrylate, 2.2 kg methyl methacrylate, 400 g isobornyl methacrylate, 200 g 1-allyl-3-methylimidazole benzene Formate, 9.4 kg mixed solvent (the same ratio as above), 200 g AIBN, after mixing evenly, take 4 kg directly into the reaction kettle of step 1, the remaining material is added dropwise to the reaction kettle within 3 hours, continue to react for 4 hours, wait The solid content is higher than 95% of the theoretical value.

Embodiment 2

[0040] Step 1. Take 200 g of acrylic triethoxysilane, 5 kg of dihydroxy polysiloxane with 1% hydroxyl content, and 5 kg of butyl acetate (w): methyl ethyl ketone (w) = 1:1 mixed solvent , After mixing uniformly, heat up to 90 ℃, keep for 1 h, and cool down to 80 ℃;

[0041] Step two, 400 g styrene, 2.8 kg cyclohexyl methacrylate, 4.0 kg methyl methacrylate, 800 g isobornyl methacrylate, 400 g 1-allyl-3-methylimidazole ethyl Acidic acid salt, 1.2 kg mixed solvent (the same ratio as above), 200 g AIBN, after mixing evenly, take 6 kg directly into the reaction kettle of step 1, the remaining material is added dropwise to the reaction kettle within 3.5 hours, continue to react for 5 hours, wait for solidification The finished product is obtained when the content is higher than 95% of the theoretical value.

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Abstract

The invention relates to an ionic liquid modified bar code carbon strip back coating which is prepared from the following raw materials in parts by weight: 10-50 parts of an acrylic monomer, 0.5-2 parts of a silane coupling agent, 0.5-3 parts of an ionic liquid containing double bonds; 15-30 parts of organic silicon, 13-73.5 parts of an organic solvent and 0.5-2 parts of a catalyst. The inventionprovides the ionic liquid modified bar code carbon strip back coating and a preparation process. By means of block polymerization, the ionic liquid containing double bonds is introduced into a high molecular chain of the polyacrylate back coating, and the high molecular back coating with low resistivity is coated with a bar code carbon strip, so that static electricity generated and accumulated onthe carbon strip are reduced effectively, and therefore, the printing using quality of the back coating is guaranteed.

Description

Technical field [0001] The invention belongs to the technical field of thermal transfer printing, and specifically relates to a bar code carbon belt antistatic back coating paint and a preparation process thereof, and aims to provide a polymer antistatic back coating paint with stable performance and no conductive particles added. Background technique [0002] Flat-pressed barcode ribbon or side-pressed floating barcode ribbon based on 4.5 μm PET or other film materials, the non-ink layer usually needs to be coated with a smooth antistatic coating to prevent the ribbon from winding Adhesion, rapid printing and accumulating static electricity and printing burn through are called back coatings. [0003] In the process of ribbon winding, unwinding, slitting and printing, the non-ink layer side will generate static electricity due to friction, which will affect product quality and printing quality. Especially during the printing process, the print head coated with silica gel rubs agai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/24C09D133/12B41M5/42B41M5/44
CPCB41M5/423B41M5/44B41M5/443B41M2205/40C09D5/18C09D5/24C09D143/04Y02P20/54
Inventor 姚开胜赵海丽芦雷鸣卢伟伟贾录阳
Owner HENAN UNIV OF SCI & TECH
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