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Water-based adhesive for electrostatic flocking of hot-rolled coating steel plate for marine engineering

A coating steel plate, electrostatic flocking technology, applied in the direction of adhesive types, graft polymer adhesives, polymer adhesive additives, etc., can solve corrosion resistance, erosion resistance, moisture and heat resistance, Combined with problems such as fastness, waterproof performance and poor anti-oxidation performance, it can achieve the effect of protection from corrosion, stable performance and high bond strength.

Inactive Publication Date: 2015-02-11
WUXI XINDAZHONG STEEL SHEET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the flocking hot-rolled steel plate is a new type of material, there is no professional production of hot-rolled coated steel plate electrostatic flocking water-based adhesive for marine engineering in the domestic market. The atmosphere in the marine environment is rainy, high temperature, strong wind flow and high concentration of salt spray , the commercially available flocking glue, which is used in the electrostatic flocking of hot-rolled coated steel sheets in marine engineering, has poor corrosion resistance, erosion resistance, heat and humidity resistance, bonding fastness, waterproof performance and oxidation resistance.

Method used

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  • Water-based adhesive for electrostatic flocking of hot-rolled coating steel plate for marine engineering

Examples

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Effect test

Embodiment 1

[0017] Embodiment 1: A water-based adhesive for electrostatic flocking of hot-rolled coated steel sheets used in marine engineering, the preparation process is as follows, and the proportion of its components is calculated in parts by weight:

[0018] (1) Preparation of polyurethane prepolymer: Add 200 parts of adipic acid-type polyester propylene glycol, 60 parts of isophorone diisocyanate and 0.2 part of catalyst lauric acid into a stirred tank for mixing and stirring, and heat to 85°C for 2 hours of reaction. The stirring speed is 1500 rpm, the temperature is lowered to 70°C, 10 parts of dimethylolpropionic acid and 6 parts of N-methylpyrrolidone are added, and the reaction is carried out at a temperature of 60°C and a stirring speed of 1500 rpm for 4.5 hours. Cool to 40°C, add 6 parts of triethylamine, react for 20 minutes at a stirring speed of 1200 rpm, then add 300 parts of deionized water, and high-speed disperse and emulsify at a stirring speed of 2500 rpm 1 hour, fin...

Embodiment 2

[0025] Embodiment 2: The water-based adhesive for electrostatic flocking of hot-rolled coated steel sheets used in marine engineering, its preparation process is as follows, and its component ratio is calculated in parts by weight:

[0026](1) Preparation of polyurethane prepolymer: Add 350 parts of adipic acid type polyester propylene glycol, 90 parts of isophorone diisocyanate and 0.5 part of catalyst lauric acid into a stirred tank for mixing and stirring and heating to 95°C for 2.5 hours of reaction, The stirring speed is 2500 rpm, the temperature is lowered to 80°C, 20 parts of dimethylolpropionic acid and 12 parts of N-methylpyrrolidone are added, and the reaction is carried out at a temperature of 85°C and a stirring speed of 2000 rpm for 5 hours. Cool to 50°C, add 10 parts of triethylamine, react for 40 minutes at a stirring speed of 1800 rpm, then add 600 parts of deionized water, and high-speed disperse and emulsify at a stirring speed of 4000 rpm for 1.5 hour, final...

Embodiment 3

[0029] Embodiment 3: The water-based adhesive for electrostatic flocking of hot-rolled coated steel sheets used in marine engineering, its preparation process is as follows, and its component ratio is calculated in parts by weight:

[0030] (1) Preparation of polyurethane prepolymer: Add 250 parts of adipic acid type polyester propylene glycol, 70 parts of isophorone diisocyanate and 0.3 part of catalyst lauric acid into a stirred tank for mixing and stirring and heating to 90°C for 2.1 hours of reaction, The stirring speed is 2000 rpm, the temperature is lowered to 75°C, 15 parts of dimethylolpropionic acid and 8 parts of N-methylpyrrolidone are added, and the reaction is carried out at a temperature of 75°C and a stirring speed of 1600 rpm for 4.7 hours. Cool to 45°C, add 8 parts of triethylamine, react for 30 minutes at a stirring speed of 1600 rpm, then add 450 parts of deionized water, and high-speed disperse and emulsify at a stirring speed of 3000 rpm 1.2 hour, finally ...

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Abstract

The invention provides a water-based adhesive for electrostatic flocking of a hot-rolled coating steel plate for oceanographic engineering. The water-based adhesive is characterized by being prepared from the following components in parts by weight: 100 parts of acrylate modified polyurethane emulsion, 4-25 parts of iron sesquioxide, 0.04-1.5 parts of mineral oil, 0.01-0.05 part of isothiazolinone bactericide, 0.05-2.5 parts of alkyl sodium sulfonate, 0.2-3.5 parts of organic bentonite and 4-18 parts of water-based tackifying resin. The water-based adhesive is prepared by the following steps: adding acrylate modified polyurethane emulsion and iron sesquioxide into a mixing reaction tank; adding mineral oil, isothiazolinone bactericide, alkyl sodium sulfonate and organic bentonite during stirring; continuously stirring, reducing the stirring speed, and adding water-based tackifying resin to obtain the water-based adhesive. The adhesive has the advantages of high adhesion strength, good waterproofing performance, good flexibility, good corrosion resistance and good oxidation resistance, and has stable long-term using performance in an ocean environment.

Description

technical field [0001] The invention relates to a water-based adhesive used for flocking on the surface of metal sheets, in particular to a water-based adhesive for electrostatic flocking of hot-rolled coated steel plates used in ocean engineering. Background technique [0002] Flocking steel plate is a high-performance material made of continuous electrostatic flocking on raw material coils. As a relatively new flocking product, flocking steel plate has unique and excellent performance. The flocking steel plate uses a hot-rolled steel plate as the substrate, and any desired pattern can be planted on the pile surface. The production of this flocked hot-rolled steel plate required a number of requirements for the adhesive: first, the adhesive used had to have excellent substrate adhesion and not peel off like the way foam and fiberglass support materials bond; Second, the adhesive is required to meet the durability and long-term safety of the flocking hot-rolled steel sheet...

Claims

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Application Information

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IPC IPC(8): C09J151/08C09J11/04C09J11/06C09J11/08C08F283/00C08G18/75C08G18/66C08G18/42
Inventor 周明华
Owner WUXI XINDAZHONG STEEL SHEET