A kind of amphiphilic siloxane gel and preparation method thereof
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A kind of technology of siloxane gel, cyclic siloxane
Active Publication Date: 2022-04-05
GECKO (ZHEJIANG) BIOTECHNOLOGY CO LTD
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[0004] Therefore, the technical problem to be solved in the present invention is to overcome the defects of the prior art silicone gel as an antifouling and anti-adhesion coating, thereby providing a kind of amphiphilic silicone gel and its preparation method
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Embodiment 1
[0042] This embodiment provides an amphiphilic siloxane gel, the preparation method of which is as follows:
[0043] (1) Take 10g of octamethylcyclotetraoxosilane, add 0.5g of tetramethylammonium silanol, stir and mix evenly at 80°C, then place it in a nitrogen atmosphere at 85°C for 12 hours, and place it in an open environment at room temperature after the reaction is completed In , after cooling to room temperature, the gel substrate can be obtained, and its NMR image is as follows figure 1 Shown, at 0ppm place, the peak of obvious linking methyl group with silicon appears, and at 3.25ppm place, the peak of obvious linking methyl group with nitrogen appears;
[0044] (2) Soak the obtained gel base material in 50cst simethicone oil to balance to obtain amphiphilic silicone gel. The physical picture of the material is as follows figure 2 As shown, it can be seen that it is a translucent elastomer, and its structure is as follows image 3 As shown, it is a dynamic network. ...
Embodiment 2
[0046] This embodiment provides an amphiphilic siloxane gel, the preparation method of which is as follows:
[0047] (1) Take 20g of decamethylcyclopentasiloxane, add 0.5g of tetrabutylphosphine hydroxide, stir and mix evenly at 60°C, then place it in a nitrogen atmosphere at 100°C for 12 hours, and place it in an open environment at room temperature after the reaction is completed , the gel substrate can be obtained after cooling to room temperature;
[0048] (2) Soak the obtained gel substrate into 20 cst of simethicone oil to balance to obtain amphiphilic silicone gel.
Embodiment 3
[0050] This embodiment provides an amphiphilic siloxane gel, the preparation method of which is as follows:
[0051] (1) Take 30g of dodecamethylcyclohexasiloxane, add 0.5g of tetrabutylammonium hydroxide, stir and mix evenly at 90°C, then place it in a nitrogen atmosphere at 60°C for 20h, and place it in an open environment at room temperature after the reaction is completed In, after cooling to room temperature, the gel substrate is obtained;
[0052] (2) Soak the obtained active gel base material in 1000cst of simethicone oil to balance to obtain the amphiphilic silicone gel.
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Abstract
The invention discloses an amphiphilic siloxane gel. The gel contains active species, and the active species is one or more mixtures of organic bases with quaternary ammonium salt groups or alkyl phosphorus hydroxide groups. . The gel material also includes a cyclic silicone and a lubricating fluid. The invention also discloses a preparation method of the above-mentioned gel. The amphiphilic siloxane gel material disclosed by the invention is simple, the synthesis process is simple and easy, green and environmentally friendly, the yield is high, the preparation cost is low, and it is easy to popularize; at the same time, it has adjustable surface adhesion and mechanical properties, which can effectively reduce marine Fouling biosorption, the introduction of positively charged groups exhibits excellent antibacterial properties; the gel can adjust the chemical balance of catalytic degradation by adjusting the content of active species and the swelling degree of functional lubricating fluid to achieve the self-polishing rate of the coating It has broad application prospects in anti-marine biofouling.
Description
technical field [0001] The invention relates to the field of organic materials, in particular to an amphiphilic siloxane gel and a preparation method thereof. Background technique [0002] In order to adapt to environmental requirements, increase the life of equipment and facilities, and protect the performance of equipment and facilities, many fields have anti-pollution needs. Antifouling coating is a commonly used antifouling method, which has a wide range of application requirements in marine engineering, chemical industry and other fields. However, the existing antifouling coating technology often has a single application scenario. For example, self-polishing type is usually used in marine applications. Or bactericidal / anti-adhesive release coating, this anti-fouling method will not only involve environmental protection issues, but also cannot be applied in other application scenarios that are unexpected in the marine environment. Although a few low surface energy coati...
Claims
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