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Environment friendly magnesium complex and capsaicin self-polishing anti-fouling coating

An anti-fouling paint and compound technology, applied in anti-fouling/underwater paints, coatings, paints containing biocides, etc., can solve problems such as high cost and secondary seawater pollution, and achieve lasting and stable anti-fouling effects.

Inactive Publication Date: 2006-07-19
TIANJIN SHENGHUI BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-polishing antifouling coating uses too many metal elements, which is costly and easily causes secondary seawater pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Magnesium complex synthesis

[0034] According to specific acrylic resin (acid value is 36, mass average molecular weight is 10200 and dispersity D=2.0, viscosity 1.0PaS) and soybean oil (acid value 102 and molecular weight 548) molar ratio is 5: 1, constitutes ligand with six Magnesium chloride hydrate (MgCl 2 ·6H 2 Magnesium ions (Mg 2+ ) is the center ion, according to the carboxyl group (-COOH) in the ligand and the center ion Mg 2+ The molar ratio is 2:1, 4:1, 6:1 (coordination number 2, 4 and 6) feeding, the reaction temperature is controlled at about 70°C, and the material can be unloaded after 1.5h-3h of heat preservation reaction, and the magnesium complex is obtained. product. The three products with carboxyl coordination numbers 2, 4 and 6 in the ligands were detected by ultraviolet spectrophotometer, and the absorbance values ​​at 218nm were 825, 1148, 976 respectively.

Embodiment 2

[0036] Preparation of Magnesium Complex-Capsaicin Self-polishing Antifouling Coatings

[0037] Formula: magnesium complex (coordination number 4) 360kg

[0038] Zinc oxide 48kg

[0039] Iron red 48kg

[0040] Titanium dioxide 48kg

[0041] Talc powder 75kg

[0042] Barite 75kg

[0043] Modified montmorillonite 4kg

[0044] Capsaicin (over 90% total alkali content) 1kg

[0045] Operation: firstly add 330 liters of dimethyl and n-butanol into the reaction kettle, add 360 kg of magnesium complex under stirring and stir to dissolve, then add zinc oxide, iron red, titanium dioxide, talcum powder in the order of formula dosage under stirring and barite, after stirring for 10 minutes, add modified montmorillonite, after stirring for 30 minutes, put all the materials into the sand mill and sand in the sand mill for 30 minutes, then add capsaicin and continue stirring for 10 minutes, the Materials, obtain about 1000kg of antifouling paint products.

[0046] test result:

[004...

Embodiment 3

[0056] Take the magnesium complex with coordination number 6 prepared in Example 1, and the rest of the conditions and operations are the same as in Example 2.

[0057] test result:

[0058] Viscosity 130 seconds

[0059] Adhesion level 1

[0060] Fineness 35μm

[0061] Surface dry 50min

[0062] Hard work 8h

[0063] Exudation rate 100μgm -2 -d -1

[0064] Scanning electron microscope image: the coating film is as smooth as ever.

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Abstract

The invention relates to an environment-friendly magnesium complex and capsicine self-polishing anti-fouling paint, which comprises (by weight percent) soyabean oil acid and specific acrylic resin complex base-material of magnesium 50-60%, pigment 19-25%, filling material 20-27%, modified montmorillonite 0.5-5%, capsicine (total alkali content above 90%) 0.08-0.16%, the pigment includes aluminum oxide, iron-oxide red and titanium dioxide, the gasket material includes talcum powder and barite.

Description

technical field [0001] The invention relates to an environment-friendly magnesium complex and capsaicin self-polishing antifouling coating. The self-polishing antifouling coating composed of magnesium complex and capsaicin is a low-cost, non-toxic and environmentally friendly antifouling coating composed of magnesium complexes as the base material, capsaicin as the "poison material" and other additives. . Background technique [0002] The marine environment is closely related to human life activities. The adhesion of marine organisms increases the friction of navigation, affects the speed of the ship, and increases fuel consumption. At the same time, due to the fouling of marine organisms, the aging of the paint film is accelerated, and the corrosion of the hull is aggravated. The damage is astonishing. [0003] The use of organotin long-term antifouling paint plays an important role in preventing marine organisms from adhering. However, due to its great toxicity, seawate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D5/16
Inventor 姚宝书刘文惠刘文君
Owner TIANJIN SHENGHUI BIOTECH
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