Ocean pressure alternating sensitive supramolecular microsphere and synthesis method thereof
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A supramolecular and pressure technology, applied in the treatment of dyed low-molecular-weight organic compounds, dyed high-molecular organic compounds, chemical instruments and methods, etc. Operation, good stability, environment-friendly effect
Inactive Publication Date: 2018-06-01
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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Problems solved by technology
Existing organic coating materials are affected by the alternating pressure environment, which easily leads to the accumulation of internal stress in the coating, local deterioration, and finally the failure of the coating
Method used
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Embodiment 1
[0038] The steps of the synthetic method for preparing hydrostatic pressure-sensitive supramolecular microspheres are as follows:
[0039] Step 1, surfactant calcium dodecylbenzene sulfonate (0.4g) and hexadecyltrimethylammonium bromide (0.1g) are added template agent pyrrolidine (0.2g) and sodium hydroxide (0.1M , 25mL) of the mixed solution, continuously vigorously stir the mixed solution. Make it even. Then, silicon source tetraethyl orthosilicate (2 mL) was added, the mixture was stirred rapidly at room temperature, and the reaction continued for 24 h.
[0040] Step 2. After the reaction is completed, pour the mixed solution into a 100 mL polytetrafluoroethylene-lined stainless steel reaction kettle, put it into an oven, and react at 70° C. for 48 hours.
[0041] Step 3. Cool to room temperature, filter the obtained white leak-off solution, wash the obtained solid repeatedly with deionized water, and then vacuum-dry overnight. The obtained white powder is ultrasonicated ...
Embodiment 2
[0051] The steps of the synthetic method for preparing hydrostatic pressure-sensitive supramolecular microspheres are as follows:
[0052] Step 1, surfactant sorbitan monostearate (3g) and styrene-maleic anhydride copolymer (1g) are added template agent polyvinylpyrrolidone (5g) and sodium hydroxide (0.1M, 100mL) In the mixed solution, keep stirring the mixed solution vigorously. Make it even. Then, silicon source tetraethyl orthosilicate (4 mL) and KH550 (4 mL) were added, the mixture was stirred rapidly at room temperature, and the reaction continued for 24 h.
[0053] Step 2. After the reaction is completed, pour the mixed solution into a 100 mL polytetrafluoroethylene-lined stainless steel reaction kettle, put it into an oven, and react at 80° C. for 48 hours.
[0054] Step 3. Cool to room temperature, filter the obtained white leak-off solution, wash the obtained solid several times with deionized water, and then vacuum-dry overnight. The obtained white powder is ultras...
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Abstract
The invention belongs to the technical field of corrosion prevention of ocean self-repairing coatings and particularly relates to an ocean pressure alternating sensitive supramolecular microsphere anda synthesis method of the microsphere. The ocean pressure alternating sensitive supramolecular microsphere is prepared by wrapping a supramolecular nano mesoporous silicon dioxide sphere with a corrosion inhibitor and grafting and modifying the surface with cyclodextrin. The synthesized nano supramolecular microsphere has characteristics of a nanomaterial, is used as functional filling to prepareanti-corrosive paint, does not influence basic performance of the paint, and has an important application value. The pressure sensitive supramolecular microsphere has the characteristics of good stability, pressure sensitivity characteristic, good fusion with the paint and the like. The microsphere is environment-friendly and pollution-free in a use process. The microsphere is applicable to anti-corrosive coating filling of engineering and equipment such as ocean engineering, ships, deep-ocean engineering and underwater vehicles. The microsphere has the advantages of environmental friendliness, good controllability and easiness in operation and is easy in industrial production.
Description
technical field [0001] The invention belongs to the technical field of corrosion protection of marine self-repairing coatings, in particular to a supramolecular microsphere sensitive to alternating marine pressure and a synthesis method thereof. Background technique [0002] Marine engineering such as underwater engineering, deep-sea equipment, seaport terminals, and coastal engineering is a key area of marine science and technology in my country. However, the harsh marine corrosion environment poses serious challenges to the reliability of major infrastructure. Organic anti-corrosion coating is one of the most effective ways to slow down the corrosion of steel in marine corrosive environment. However, during the service of organic coatings, the alternating pressure of seawater leads to the initiation of cracks in the coating, which is the main reason for reducing the life of the coating. Therefore, it is imminent to develop new protective coating technology that is resi...
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