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A kind of salicamide zinc chelate and preparation method thereof

A technology of zinc salicylamide and chelate, which is applied in the field of zinc salicylamide chelate and its preparation, can solve problems such as high toxicity and marine environmental pollution, and achieve easy-to-obtain raw materials, easy-to-control reaction conditions, and obvious adhesion and growth The effect of inhibition

Active Publication Date: 2020-07-24
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because metal compounds such as tin, copper and mercury are too toxic, they cause great pollution to the marine environment

Method used

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  • A kind of salicamide zinc chelate and preparation method thereof
  • A kind of salicamide zinc chelate and preparation method thereof
  • A kind of salicamide zinc chelate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The technical process of the preparation method of the salicylamide zinc chelate involved in this embodiment is as follows: in the reaction flask, add 2.49 g of salicylamide, then add 20 ml of distilled water, stir magnetically, and heat the water bath to 50 ° C to obtain an aqueous solution of salicylamide; Dissolve g zinc nitrate hexahydrate in 20ml of distilled water, slowly drop the aqueous solution of zinc nitrate into the aqueous solution of salamide for hydrothermal reaction, the reaction temperature is 60°C, and the reaction time is 2h. After the hydrothermal reaction is completed, react again at room temperature Add 50ml of absolute ethanol in the bottle, shake to obtain a yellow precipitate, use a vacuum filter to carry out suction filtration, rinse with suction after 3 times, and after drying, prepare the following image 3 The salicylamide zinc chelate shown.

[0019] The salicylamide zinc chelate involved in this example is a zinc-containing benzamide compo...

Embodiment 2

[0021] This embodiment relates to the infrared characterization of the zinc salicylamide chelate, and the zinc salicylamide chelate prepared in Example 1 is tested by red light spectrum, and the results are as follows Figure 4 Shown, consistent with the molecular structure formula of embodiment 1: wherein 3407cm -1 N-H stretching vibration absorption peak, 3000-2800cm -1 is saturated C-H stretching vibration, 1645cm -1 It is the C=O stretching vibration absorption peak of amide, 1585cm -1 、1540cm -1 and 1442cm -1 Vibration for the benzene ring skeleton, 740cm -1 The strong absorption peak at is the C-H out-of-plane bending vibration of the benzene substituent, that is, the ortho-position double substitution.

Embodiment 3

[0023] This example relates to the antifouling performance test of the salicylamide zinc chelate: take the salicylamide zinc chelate prepared in Example 1 and dissolve it in water to prepare a gradient concentration solution with a concentration of 0.01-10 μg / mL; add the gradient concentration solution to to a concentration of 10 5 In the aqueous solution of small navicula diatoms / mL, the temperature was 25°C, the light intensity was 1900lux, and the light-dark cycle was 12h: 12h, and the attached diatoms were counted. 50% inhibitory concentration EC 500.3 μg / mL; the gradient concentration solution was added to the mussel test plate, 10 mussels were placed in each plate, and after 24 hours, the number of silk attached to the silk was counted, and the adhesion of the zinc salamide chelate to the silk of the mussel was calculated. The half maximal inhibitory concentration EC 50 It was 0.25 μg / mL; the gradient concentration solution was added to the barnacle larvae test cup, an...

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Abstract

The invention belongs to the technical field of marine antifouling materials, and in particular, relates to a zinc salicylamide chelate and a preparation method thereof. A molecular structure of the zinc salicylamide chelate consists of two salicylamides and zinc. The technological process of the preparation method of the zinc salicylamide chelate includes four steps: preparation of a salicylamideaqueous solution, preparation of a zinc nitrate aqueous solution, hydrothermal reaction and preparation of the zinc salicylamide chelate. The hydrothermal reaction of salicylamides and zinc nitrate is firstly carried out, then precipitation is carried out with absolute ethyl alcohol, and finally, the zinc salicylamide chelate is obtained. The inhibition experiments on marine fouling organisms show that the adherent median inhibitory concentration EC50 of the zinc salicylamide chelate on dinoflagellates, mussels byssus and barnacle larvae is 0.3 [mu]g / mL, 0.25 [mu]g / mL and 0.1 [mu]g / mL respectively, the zinc salicylamide chelate has both organic antifouling functional groups of salicylamide compounds and antifouling ability of zinc ions, shows dual antifouling properties, and has obvious adhesion and growth inhibition effects on typical fouling organisms.

Description

Technical field: [0001] The invention belongs to the technical field of marine antifouling materials, and in particular relates to a zinc salicylamide chelate and a preparation method thereof. The zinc salicylamide chelate is applied to the surface of ships and marine engineering underwater facilities to prevent and control pollution in the marine environment. Attachment of marine fouling organisms. Background technique: [0002] Fouling organisms attached to solid surfaces will cause great harm to marine facilities. As far as ships are concerned, they will increase navigational resistance, increase fuel consumption, increase carbon emissions, etc., and will also damage coatings, induce corrosion, and block sea pipelines, etc. . Severe calcareous biofouling can increase the shaft power of ships below 15 knots by more than 80% while maintaining the same speed. Applying antifouling paint is the most convenient and effective method to prevent biofouling on the hull shell and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16
CPCC09D5/1625
Inventor 郑纪勇蔺存国刘光豪孙智勇
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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