An organic hydrophilic coating and a manufacturing method thereof as well as an application

A hydrophilic and organic technology, applied in the field of coatings, can solve the problems of white pitting corrosion, peculiar smell, corrosion of chrome-plated steel rollers, etc., and achieve the effects of convenient use, single package and simple preparation process

Active Publication Date: 2009-09-30
GUANGZHOU HUMAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hydrophilic topcoats are usually divided into three systems: (1) inorganic topcoat systems based on sodium silicate or/and silica sol, which can be used with inorganic or organic bottoms, but such coatings contain inorganic silicon compounds , will cause abrasion to the machining mold coated with aluminum foil, and will produce peculiar smell when the air conditioner is running; (2) an organic-inorganic composite surface coating system compounded with organic resin and sodium silicate or/and silica sol, such as Chinese patent CN200410103974 .9 and CN200710038070.6, can be used with inorganic base or organic base, but this type of coating also contains inorganic silicon compounds, which will cause abrasion to the mechanical processing mold coated with aluminum foil; (3) use pure organic resin as film-forming material Pure organic topcoat systems, such as Chinese patents CN93104232.1, CN00106726.5, CN02151903,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0054] Example 1

[0055] Formula (1):

[0056] Deionized water 25.8g

[0057] Formula (2):

[0058] Acrylic acid (1.0g) sodium allyl sulfonate (4.0g) deionized water (6.0g) hydroxyethyl acrylate (20.0g) diacetone acrylamide (5.0g) tetraethylene glycol dimethacrylate (0.05g) )

[0059] Recipe (3)

[0060] Ammonium persulfate (1.5g), 30g deionized water

[0061] Recipe (4)

[0062] Carved white powder 0.1g, deionized water 6.5g

[0063] The preparation steps of water-soluble hydrophilic acrylic resin are as follows:

[0064] (1) Add the water in formula (1) into the reactor, start stirring, and raise the temperature to 80°C;

[0065] (2) Prepare the comonomer in formula (2) into a mixed monomer aqueous solution;

[0066] (3) Mix the ammonium persulfate and water in formula (3) into a 5% initiator aqueous solution;

[0067] (4) Mixing the white powder and water in formula (4) into a 1.5% reducing agent aqueous solution;

[0068] (5) At 80°C, add 95% of the total amount of the water-...

Example Embodiment

[0071] Example 2

[0072] Formula (1):

[0073] Deionized water 43

[0074] Formula (2):

[0075] Acrylic acid (25), deionized water (19.0), hydroxyethyl acrylate (3.0), polyethylene glycol (400) dimethacrylate (0.6)

[0076] Formula (3):

[0077] Potassium persulfate (0.2), deionized water 6.4

[0078] Recipe (4):

[0079] Sodium hypophosphite 0.005, deionized water 2.5

[0080] The preparation steps of water-soluble hydrophilic acrylic resin are as follows:

[0081] (1) Add the water in formula (1) into the reactor, start stirring, and raise the temperature to 80°C;

[0082] (2) Prepare the comonomer in formula (2) into a mixed monomer aqueous solution, and adjust the pH of the mixed monomer aqueous solution to 4 (measured by pH meter) with a 30% sodium hydroxide aqueous solution, and the temperature should not exceed 35°C when adjusting the pH ;

[0083] (3) Mix potassium persulfate and water in formula (3) into a 3% initiator aqueous solution;

[0084] (4) Mixing the white pow...

Example Embodiment

[0088] Example 3

[0089] Formula (1):

[0090] Deionized water 13.8

[0091] Formula (2):

[0092] Itaconic acid 0.5, maleic anhydride 3.5, acrylamide 2-propane sulfonic acid 20, deionized water (15.0), hydroxypropyl acrylate (3.5),

[0093] Vinylpyrrolidone 0.5, tetraethylene glycol dimethacrylate (0.1)

[0094] Formula (3):

[0095] Ammonium persulfate (1.4), deionized water 33.6

[0096] Recipe (4):

[0097] Carved white powder 0.09, deionized water 8.0

[0098] The preparation steps of water-soluble hydrophilic acrylic resin are as follows:

[0099] (1) Add the water in formula (1) into the reactor, start stirring, and raise the temperature to 80°C;

[0100] (2) Prepare the comonomer in formula (2) into a mixed monomer aqueous solution, adjust the pH of the mixed monomer aqueous solution to 5.5 (measured by pH meter) with a 30% sodium hydroxide aqueous solution, and the temperature should not exceed 35°C when adjusting the pH ;

[0101] (3) Mix potassium persulfate and water ...

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Abstract

The invention discloses an organic hydrophilic coating, which comprises water soluble hydrophilic acrylic resin, water soluble curing agent, leveling agent, and latent solvent. The hydrophilic coating can be packed singly to be applied to aluminum foil with antisepsis first coat coated in advance, and is provided with wide overcoatability with the first coat; abrasion to a mould coated with compound containing inorganic silicon and a mould for processing coating aluminum foil can not be caused.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an organic hydrophilic coating and its preparation method and application. Background technique [0002] Since the early 1990s, China has gradually carried out anti-corrosion and hydrophilic treatment on the aluminum foil used in household air-conditioning radiators, so as to avoid the formation of water bridges between the aluminum fins when the air conditioner is running, which will cause noise, increase energy consumption, promote white powder, and produce Odor etc. In order to achieve both anti-corrosion and hydrophilic functions, a double-drying and double-coating process is generally adopted, that is, a layer of anti-corrosion primer is applied on the degreased aluminum foil, and after drying, a layer of hydrophilic topcoat is applied on it. layer. There are usually two types of anti-corrosion primers: one is an inorganic primer, that is, a chemical conversion treatment solution; ...

Claims

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Application Information

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IPC IPC(8): C09D133/06C09D133/02F28F3/00F25B39/00
Inventor 唐靖黄光燕陈兴耀陈勇李月峰李晨隽
Owner GUANGZHOU HUMAN CHEM
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