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Capsaicin antifouling paint

A technology of antifouling coatings and capsaicin, applied in the direction of coatings, etc., can solve the problems of high cost of coatings and difficult industrial production, and achieve the effects of increasing corrosion resistance, preventing adhesion, and reducing the content of capsaicin

Inactive Publication Date: 2005-12-21
心脑合一(上海)教育科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic price of capsaicin is about 30,000 to 40,000 yuan / kg, which makes the cost of coatings too high and difficult for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 active acrylic resin synthesis

[0032] Methyl methacrylate, butyl acrylate, methacrylic acid, ethyl acrylate and hydroxypropyl methacrylate were uniformly mixed in a weight ratio of 20:20:5:5:1 to obtain 1000 g of mixed monomers.

[0033] First add 300g of mixed monomers, 400ml of n-butanol, 400ml of xylene, 3g of azobisisobutyronitrile into the reactor, heat and stir, and raise the temperature to 90-100°C. After reacting for 1.5 hours, start to drop 700g of mixed monomers and 3 g of azobisisobutyronitrile, after the dropwise addition, add 4 g of azobisisobutyronitrile, 50 ml of n-butanol, and 50 ml of xylene, and stir for 2 hours to obtain a reactive acrylic resin. The result measured by waters515-410 gel permeation chromatography is: number average molecular weight M w =9800, weight average molecular weight M w =17100, degree of dispersion D=1.75.

Embodiment 2

[0035] Use the reactive acrylic resin prepared in Example 1, and others are commercially available industrial products.

[0036] Antifouling coating formula: reactive acrylic resin 200g

[0037] Lime powder (average particle size 35μm) 400g

[0038] Lime powder (average particle size 180μm) 200g

[0039] Silica powder (average particle size 60μm) 50g

[0040] Calcium hydroxide (average particle size 100μm) 50g

[0041] Bentonite (average particle size 100μm) 100g

[0042] Capsaicin 0.55g

[0043] Operation: First add 100ml of xylene, 100ml of n-butanol and 200g of active acrylic resin into the manufacturing kettle, stir and dissolve, then add lime powder, bentonite, and silica powder (filler) of two particle sizes according to the formula dosage and the following order under stirring , calcium hydroxide, after stirring for 1 hour, add capsaicin, and then stir for 10 minutes to obtain an an...

Embodiment 3

[0046] Antifouling paint formulation: Reactive Acrylic Resin 345g

[0047]Lime powder (average particle size 40μm) 580g

[0048] Lime powder (average particle size 160μm) 295g

[0049] Calcium hydroxide (average particle size 100μm) 70g

[0050] Bentonite (average particle size 90μm) 130g

[0051] Capsaicin 1.2g

[0052] time

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PUM

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Abstract

The invention relates to a kind of capsicum alkali antifouling dope. Its materials weight proportions are: active acrylic resin 18-25%, calcareousness powderó±30-40%, calcareousness powderó�18-30%, calcium hydroxide 2-6%, capsicum alkali 0.05-0.10%, bentonite 9-14% and silica powder. It is a kind of antifouling dope which prevents sea biology from accreting with active acrylic resin as basic material, calcareousness powder and calcium hydroxide of different granularities, and capsicum alkali as driving agent. The quantity average molecular weight of active acrylic resin Mn = P800, the weight average weight Mw = 17100, and the dispersing intensity D = 1.75. Through seawater (pH = 7.5) simulating hanging board experimentation, the seeping rate of capsicum alkali of the dope stabilizes at 74 - 118 ª–gíñm-2d-1, its pH stabilizes at 9.5 - 10.0, and its effective antifouling period can get to over 3 years. The dope of the invention is non-toxic, highly effective, and low-cost.

Description

Technical field: [0001] The invention relates to an antifouling paint, in particular to a capsaicin antifouling paint. The coating uses capsaicin as a repellent, optimizes the combination with alkaline additives of different particle sizes, and under the action of an active acrylic resin matrix, an environmentally friendly antifouling coating with low cost and low price is produced. Background technique: [0002] The pollution of marine organisms has a great impact on the speed and fuel consumption of the ship. Biofouling accelerates the aging of the paint film, aggravates the corrosion of the hull, and affects the appearance. In order to achieve the purpose of antifouling, the poisons used include cuprous oxide, mercury oxide, etc., and the antifouling period is short. The developed organotin long-lasting antifouling paint has high residual poison in the paint film and low utilization rate of the poison. In the 1970s, acrylic organotin polymer self-polishing antifouling pa...

Claims

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Application Information

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IPC IPC(8): C09D133/02
Inventor 姚宝书雷鹂
Owner 心脑合一(上海)教育科技有限公司
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