A detection method for chemical bonding at the interface of tie paint/antifouling paint organic coating

Abstract

The invention provides a method for detecting chemical bonding of a connection paint / anti-fouling paint organic coating interface, and relates to a detection method, wherein the method comprises: preparing a modified isocyanate polymer solution, brushing the modified isocyanate polymer solution, ultrasonically cleaning, analyzing chemical products in the connection paint / anti-fouling paint organic coating interface, analyzing characteristic element representation of the chemical reaction products in the organic coating interface, and analyzing probability representation of the chemical bonding of the organic coating interface, to implement detection of the chemical bonding of the connection paint / anti-fouling paint organic coating interface. The method not only can detect probability of chemical bonding of a liquid / solid interface, but also prolongs service life of an antifouling coating system, has high economic benefit. The method provided by the invention has advantages of simple manner, rapidness, high efficiency and accurate evaluation, and has guidance meaning on theory research.

Description

[0001] 【Technical field】 [0002] The invention relates to a detection method, in particular to a detection method for organic coating interface chemical bonding, in particular to a detection method for connecting paint / antifouling paint organic coating interface chemical bonding. [0003] 【Background technique】 [0004] It is known that the research on interfacial chemical bonding is involved in the fields of metal interface, ceramic interface and composite materials. The current research on metal interface chemical bonding is to use modified epoxy to form a chemical bond with the metal surface, thereby improving the organic coating on the metal substrate. Surface adhesion, but the bonding form still stays in the infrared spectrum characterization, and the bonding probability cannot be detected; after searching, it is found that the published patent documents involve the research of interface chemical bonding. In terms of ceramic interface research, US Patent CN101496112, 2009....

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Problems solved by technology

[0004] It is known that the research on interfacial chemical bonding is involved in the fields of metal interface, ceramic interface and composite materials. The current research on metal interface chemical bonding is to use modified epoxy to form a chemical bond with the metal surface, thereby improving the organic coating on the metal substrate. Surface adhesion, but the bonding form still stays in the infrared spectrum characterization, and the bonding probability cannot be detected; after searching, it is found that the published patent documents involve the research of interface chemical bonding. In terms of ceramic interface research, US Patent CN101496112, 2009.7. 29 It is disclosed that a chemically bonded oxide-phosphate ceramic cement matrix is ​​formed by cold sintering, but the detection method of its chemical bonding probability is not indicated; in the aspect of composite material interface research (fiber composite material, 2000.01, high-strength polyethylene Research on the interface of fiber-reinforced composite materials - the chemical bonds and effects of multifunctional compounds in the interface), Yu Muhuo et al. used the carboxyl groups on the surface of polyethylene fibers oxidized by potassium dichromate as reaction points, and introduced multifunctional amine alcohols Compounds, the oxidation reaction and the existence of multifunctional compounds on the fiber surface have been proved by using FTIR spectroscopy and functional group quantitative analysis, but the grafting rate of multifunctional compounds on the fiber surface has not been given; in terms of organic coating interface, especially Using chemical bonding at the interface of antifouling / connecting paint coatings to improve interlayer adhesion, and there is no public report on the detection method of the bonding probability of chemical bonds participating in the reaction at the interface

[0005] Commonly used antifouling coatings generally use polyester hydrolyzable resin as the base material, and its components contain -NCO active groups, and epoxy acrylate is modified by cyanate esters. Oxyacrylate side chain -OH reacts chemically, therefore, the connecting coating rich in active hydroxyl groups can chemically bond with the polyester hydrolyzed antifouling coating, thereby improving the adhesion between layers and achieving firmness between coatings Combination; After searching, it is found that the disclosed patent documents relate to the modification method of isocyanate. French patent CN1688662 discloses that the isocyanate group of triisocyanate reacts with the terminal functional group of aliphatic chain to prepare the aliphatic side chain containing at least 15 carbon atoms. Modified isocyanate; Chinese patent CN101948409A discloses the use of hydroxyethyl methacrylate, isophorone diisocyanate, hydroquinone, dibutyltin dilaurate, etc. to prepare hydroxyethyl methacrylate modified isophor Alone diisocyanate; U.S. Patent CN101367907 discloses a kind of diphenylmethane diisocyanate modified by allophanate; The method of isocyanate has no public reports; although the method of modifying epoxy acrylate by cyanate can make the link coating rich in active hydroxyls chemically bonded with the polyester hydrolysis type antifouling coating, but The chemical reaction that occurs at the interface of the organic coating is extremely difficult to detect, not only is it difficult to find the bonding interface, but it is also impossible to prove that the interface has been chemically bonded

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