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A kind of organosilicon/organofluorine double modified polyurethane composite UV photocuring coating and its preparation and application

A light-curing coating and double-modification technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of reduced coating body performance, difficult migration of fluorine-containing groups, opaque materials, etc., and achieve good coating adaptability , energy-saving and low-cost effects in the preparation process

Active Publication Date: 2022-05-24
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the way of physical blending, the compatibility between organic fluoropolymer and epoxy coating is poor, phase separation occurs, the material becomes opaque, and the bulk performance of the coating is also reduced; while adding small molecule fluorine-containing reactive monomers, due to Short fluorine-containing chains are easy to be embedded, and fluorine-containing groups are difficult to migrate to the surface of the material. To achieve the desired modification effect, a large amount of fluorine-containing monomers needs to be added

Method used

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  • A kind of organosilicon/organofluorine double modified polyurethane composite UV photocuring coating and its preparation and application
  • A kind of organosilicon/organofluorine double modified polyurethane composite UV photocuring coating and its preparation and application
  • A kind of organosilicon/organofluorine double modified polyurethane composite UV photocuring coating and its preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0077] (1) the preparation of containing triple double bond alcohol ester end-capped polyurethane: adding 160 parts by mass of butanone solvent, 100 parts by mass of polycaprolactone diol to the reaction that is equipped with reflux condenser, dropping funnel, thermometer and agitator , heated and stirred to 60 ℃, then added 40 parts by mass of isophorone diisocyanate, 2.5 parts by mass of catalyst dibutyltin dilaurate and 0.5 parts by mass of polymerization inhibitor (hydroquinone), then heated to 80 ℃, reacted After 6 hours, a polyurethane prepolymer was obtained, and 30 parts by mass of pentaerythritol triacrylate was added to the system, reacted for 5 hours, and the solvent was removed by rotary evaporation to obtain a three-double bond alcohol ester-terminated polyurethane. FT-IR (BrukerTENSOR27 (Germany) Fourier transform infrared spectrometer) at 1730cm -1 with 1635cm -1 There are C=O and C=C absorption peaks, respectively, 1 HNMR appears CH at 6.1ppm, 5.6ppm2 =C(CH ...

Embodiment 2

[0086] (1) the preparation of containing triple double bond alcohol ester end-capped polyurethane: 180 parts by mass of toluene solvent, 100 parts by mass of polycaprolactone diol are added in the reaction that is equipped with reflux condenser, dropping funnel, thermometer and stirrer , heated and stirred to 55 ℃, then added 45 parts by mass of isophorone diisocyanate, 2.6 parts by mass of catalyst dibutyltin dilaurate and 0.5 parts by mass of polymerization inhibitor (hydroquinone), then heated to 80 ℃, reacted 5 30 parts by mass of pentaerythritol triacrylate was added to the system, reacted for 5 hours, and the solvent was removed by rotary evaporation to obtain a three-double bond alcohol ester-terminated polyurethane. FT-IR (BrukerTENSOR27 (Germany) Fourier transform infrared spectrometer) at 1730cm -1 with 1635cm -1 There are C=O and C=C absorption peaks, respectively, 1 HNMR appears CH at 6.1ppm, 5.6ppm 2 =C(CH 3 )- proton absorption peak, indicating that there is ...

Embodiment 3

[0094] (1) The preparation of the three double bond alcohol ester-terminated polyurethane: 140 parts by mass of dioxane solvent and 100 parts by mass of polycaprolactone diol were added to be equipped with a reflux condenser, a dropping funnel, a thermometer and a stirrer In the reaction of , heating and stirring to 60 ℃, then adding 30 parts by mass of isophorone diisocyanate, 2 parts by mass of catalyst dibutyltin dilaurate and 0.4 parts by mass of polymerization inhibitor (hydroquinone), then warming up to 80 ℃ , reacted for 6 hours to obtain a polyurethane prepolymer, and then added 25 parts by mass of pentaerythritol triacrylate to the system, reacted for 4 hours, and removed the solvent by rotary evaporation to obtain a three-double bond alcohol ester-terminated polyurethane. FT-IR (BrukerTENSOR27 (Germany) Fourier transform infrared spectrometer) at 1730cm -1 with 1635cm -1 There are C=O and C=C absorption peaks, respectively, 1 HNMR appears CH at 6.1ppm, 5.6ppm 2 =C...

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Abstract

The invention discloses an organosilicon / organofluorine double modified polyurethane composite UV photocuring coating and its preparation and application. The composite UV light-curing coating of the present invention has higher molecular weight and silicon / fluorine content, introduces organic silicon into polyurethane coating, and the hydrophobicity, weather resistance, abrasion resistance, cold resistance, biocompatibility and resistance of the polyurethane coating after modification Performances such as aging can be significantly improved, and it also has the advantages of low cost, low VOC, good coating adaptability, easy cleaning of equipment, non-toxic, non-irritating, etc. In addition, a photosensitive organic fluoropolymer is added for compounding. A small amount of fluorine-containing prepolymer modified coating can make the composite UV photocurable coating have low surface energy, acid and alkali resistance, and good transparency. ; and realize the composite of organic fluorine and water polyurethane at the molecular level, maximize the modification effect of fluorine-containing prepolymer on polyurethane, and can be applied in the fields of electronic packaging, architectural coatings, metal coatings and the like.

Description

technical field [0001] The invention belongs to the field of UV light-curing coatings, and in particular relates to an organic silicon / organofluorine double modified polyurethane composite UV light-curing coating and a preparation method and application thereof. Background technique [0002] UV-curable polyurethane coatings have good adhesion, strong wear resistance, excellent optical properties and weather resistance, and are widely used in electronics, printing, woodware, home appliances and many other industries, but light-cured polyurethane coatings still have durability, resistance to The problems of acid and alkali, water resistance, and poor hardness limit the wider application of polyurethane coatings in the fields of superhydrophobic self-cleaning coatings, electronic packaging, architectural coatings, and metal coatings. [0003] Silicone materials have the characteristics of both organic compounds and inorganic compounds, and have excellent properties such as low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/62C08G18/75C08G18/42C08G18/10C08G18/67C08G18/62
CPCC09D175/14C09D7/62C08G18/755C08G18/4277C08G18/10C08G18/673C08G18/672C08G18/6279C08L2205/025C08L2205/035C08L2201/10C08L75/14C08K9/06C08K3/36C08G18/62
Inventor 刘伟区陈国阳梁利岩
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI