A kind of organosilicon connection coating suitable for various substrates and its preparation and application method
A silicone and coating technology, applied in the field of coatings, can solve problems such as poor recoatability, poor substrate adhesion, and inconvenient actual use, and achieve excellent connection, increase system toughness, and expand molecular weight.
Active Publication Date: 2020-02-04
XIAMEN SUNRUI SHIP COATING
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Problems solved by technology
This antifouling mechanism brings the following defects in low surface energy silicone antifouling coatings: poor adhesion to the substrate, poor recoatability
[0005] Invention patent CN201410550964.3 discloses a silicone intermediate connecting paint, which is composed of hydroxyl silicone oil, silane coupling agent, silane crosslinking agent and organotin catalyst, and consists of three parts, A, B, and C, which is inconvenient for actual use; And the adhesion strength on the anti-rust primer is only 1.18MPa
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[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all Example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0030] The present invention is further described by the following examples. Table 1 and Table 2 are respectively the A component and the B component of the three preferred embodiments provided by the present invention.
[0031] Table 1
[0032]
[0033] Table 2
[0034]
[0035] Preparation method of component A: disperse hydroxyl polysiloxane resin, cyanuric acid epoxy resin and solvent at 2500rpm, stir evenly; add defoamer,...
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Abstract
The invention provides an organosilicone connecting coating suitable for various substrates and a preparation and use method thereof. The organosilicone connecting coating suitable for the various substrates is mainly prepared from the following raw materials in parts by weight: a component A and a component B, wherein the component A comprises 40 to 44 parts of hydroxy terminated polydimethylsiloxane, 4 to 8 parts of cyanuric acid epoxy resin, 1.6 to 2 parts of thixotropic agent, 0.4 to 0.8 part of defoaming agent, 0.3 to 0.5 part of dispersant, 8 to 10 parts of pigment, 16 to 20 parts of filler and 6 to 7.2 parts of solvent; the component B comprises 2 to 2.2 parts of crosslinking agent, 0.5 to 1 part of adhesion force accelerant, 3.2 to 6.4 parts of curing agent, 0.3 to 0.5 part of catalyst, and 7.4 to 7.9 parts of solvent. The organosilicone connecting coating suitable for the various substrates has the advantages that after curing, the adhesion strength of a coating layer to the substrate is 2.2MPa or above; after curing, the connecting strength to the dirt-release type anti-pollution paint is higher than 1.0MPa, or is greater than the cohesion force of the anti-pollution coating.
Description
technical field [0001] The invention relates to coating technology, in particular to an organic silicon connection coating suitable for various substrates and a preparation and application method. Background technique [0002] Fouling-release antifouling paint is a non-release antifouling agent and environmentally friendly paint. It uses the low surface energy characteristics of the paint surface itself to make it difficult for marine organisms to adhere; even if marine organisms adhere, the low elastic modulus The attachments are easily removed under the shear force of water or high-pressure water washing when the ship is sailing. This antifouling mechanism brings the following defects in low surface energy silicone antifouling coatings: poor adhesion to the substrate and poor recoatability. [0003] Due to the above-mentioned defects of the fouling-release antifouling paint, if it is directly coated on the epoxy antirust coating or metal substrate, the antifouling coating...
Claims
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IPC IPC(8): C09D183/06C09D163/00C09D7/61C09D7/62C09D7/63C09D5/16
CPCC08K2003/2241C08K2003/2272C08L2205/03C09D5/16C09D183/06C08L63/00C08L77/00C08K13/02C08K3/22C08K3/346C08K3/34C08K5/544C08K3/36C08K13/06
Inventor 王胜龙刘轶龙方大庆苏雅丽吴堃
Owner XIAMEN SUNRUI SHIP COATING