TWI704195B - Anti-corrosion fluorocarbon composition - Google Patents

Abstract

Disclosed is an anti-corrosion fluorocarbon composition which includes the first ingredient and the second ingredient. The first ingredient includes 40-70 percent by weight of the FEVE fluorocarbon, 5-30 percent by weight of the ether, 5-30 percent by weight of the alcohol, 0.2-2.5 percent by weight of the surface conditioning agent, 0.3-2.5 percent by weight of the defoamer and 0.2-2.5 percent by weight of the thixotropic agent. The second ingredient includes 3-30 percent by weight of the isocyanate. The weight percentage of the first ingredient and the second ingredient is from 6:1 to 16:1. The anti-corrosion fluorocarbon composition of the invention can dry at the room temperature by the combination of various ingredients and specific contents and possesses the effects of excellent corrosion resistance, chemical resistance and weather resistance after completely drying.

Description

Anti-corrosion fluorocarbon composition

The present invention relates to an anti-corrosion composition, in particular to an anti-corrosion fluorocarbon composition

Many structures are mainly made of metal. When they are in an environment with high corrosion factors, the metal will corrode and greatly reduce its original performance. Therefore, the structure will be protected against corrosion to extend the metal structure. Life.

The conventional anti-corrosion methods mainly include electroplating, coating, hot dipping, cathodic protection, etc. Among them, the coating method is to coat the paint on the surface of the object to form a thin film to achieve the effect of protecting the surface of the object. Including epoxy resin, grease paint and latex paint.

However, the above-mentioned coatings all have disadvantages in their use. For example, epoxy resin is not easy to dry, grease paint has low corrosion resistance, is not easy to dry, soft, and latex paint has poor flexibility and adhesion, which limits its application. In summary, the conventional paint has its need for improvement.

For this reason, the purpose of the present invention is to provide an anti-corrosion fluorocarbon composition that can be used conveniently and improve its anti-corrosion effect.

The technical means adopted by the present invention to solve the problems of the prior art is to provide an anticorrosive fluorocarbon composition comprising a first component, including 40 to 70 weight percent of a FEVE fluorocarbon resin, and 5 to 30 weight percent of an ether Type, 5 to 30 weight percent of an alcohol, 0.2 to 2.5 weight percent of a surface modifier, 0.3 to 2.5 weight percent of a defoaming agent, and 0.2 to 2.5 weight percent of a thixotropic agent; and a second component , Including 3 to 30 weight percent of an isocyanate, wherein the weight percent of the first component and the second component is 6:1 to 16:1.

In the anticorrosive fluorocarbon composition of an embodiment of the present invention, the first component includes a master pigment not exceeding 15% by weight.

In the anticorrosive fluorocarbon composition of an embodiment of the present invention, the first component includes a catalyst not exceeding 2.5% by weight.

In the anticorrosive fluorocarbon composition of an embodiment of the present invention, the second component includes not more than 30 weight percent of monoethers.

In the anticorrosive fluorocarbon composition of an embodiment of the present invention, the second component includes not more than 30 weight percent of an alcohol.

In the anticorrosive fluorocarbon composition of an embodiment of the present invention, the weight percentage of the FEVE fluorocarbon resin is 50-60.

In the anticorrosive fluorocarbon composition of an embodiment of the present invention, the weight percentage of the isocyanate is 5-15.

In the anticorrosive fluorocarbon composition of an embodiment of the present invention, the ether is ethylene glycol butyl ether.

In the anticorrosive fluorocarbon composition of an embodiment of the present invention, the alcohol is n-butanol.

Another technical means adopted by the present invention to solve the problems of the conventional technology is to provide an anticorrosive fluorocarbon composition as a metal anticorrosion application.

Through the technical means adopted by the present invention, the anticorrosive fluorocarbon composition can be self-dried at room temperature through the cross-linking and bridging of the first component and the second component, and has high corrosion resistance and high resistance after being completely dried. Chemical and high weather resistance. Moreover, the anticorrosive fluorocarbon composition can be cured at room temperature or high temperature, and is convenient to use. In addition, according to the applied substrate material and environmental factors, the content of each component of the first component and the second component can be adjusted accordingly to achieve the best effect.

Hereinafter, the embodiments of the present invention will be described based on Figs. 1a to 5b. This description is not intended to limit the implementation of the present invention, but is a kind of embodiment of the present invention.

An anticorrosive fluorocarbon composition according to an embodiment of the present invention includes a first component and a second component.

In detail, the first component includes 40 to 70 weight percent of a FEVE fluorocarbon resin, 5 to 30 weight percent of an ether, 5 to 30 weight percent of an alcohol, and 0.2 to 2.5 weight percent of a surface modifier , 0.3 to 2.5 weight percent of a defoaming agent and 0.2 to 2.5 weight percent of a thixotropic agent. The second component includes 3 to 30 weight percent monoisocyanate. The weight percentage of the first component to the second component is 6:1 to 16:1.

Preferably, the weight percentage of the FEVE fluorocarbon resin is 50-60, and the weight percentage of the isocyanate is 5-15.

In detail, the FEVE fluorocarbon resin can be a vinyl fluoride-vinyl ether copolymer resin, the ether can be ethylene glycol butyl ether, the alcohol can be n-butanol, and the defoamer can be selected from VersaFlow Base.

In addition, in other embodiments, the first component may further include a master pigment not exceeding 15% by weight and/or a catalyst not exceeding 2.5% by weight; and the second component may include a monoether not exceeding 30% by weight. And/or an alcohol with no more than 30 weight percent.

In this embodiment, the anticorrosive fluorocarbon composition of the present invention is a coating, which is coated on the surface of an object by brushing, spraying, roller coating, etc., for the purpose of anti-corrosion, especially for metal anti-corrosion. Of course, the present invention is not limited to this. The anti-corrosion fluorocarbon composition of the present invention can also be applied to other materials for anti-corrosion. In detail, the first component and the second component of the anticorrosive fluorocarbon composition of the present invention exist separately before use, and are mixed with each other during use. Preferably, the storage temperature of the first component and the second component of the anticorrosive fluorocarbon composition of the present invention should not exceed 40°C and lower than 5°C.

Referring to Figure 1a and Figure 1b, which are respectively a galvanized steel sheet with the anticorrosive fluorocarbon composition of the present invention applied (Figure 1a) and without the anticorrosive fluorocarbon composition of the present invention (Figure 1b). The salt spray test is a 2000-hour experimental test. It can be seen that the surface of the galvanized steel sheet (Figure 1b) to which the anticorrosive fluorocarbon composition of the present invention has not been applied has obvious corrosion.

Similarly, referring to Figures 2a and 2b, which are respectively a magnesium-aluminum-zinc-coated steel sheet with the anticorrosive fluorocarbon composition of the present invention applied (Figure 2a) and without the anticorrosive fluorocarbon composition of the present invention ( Figure 2b) Experimental test of 2000 hours of salt spray test. It can be seen that the surface of the magnesium-aluminum-zinc-plated steel sheet (Figure 2b) to which the anti-corrosion fluorocarbon composition of the present invention is not applied is obviously rusted.

Similarly, referring to Figures 3a and 3b, which are respectively a galvanized steel sheet with a thickness of 2.3mm that has the anticorrosive fluorocarbon composition of the present invention applied (Figure 3a) and the anticorrosive fluorocarbon of the present invention is not applied. The composition (Figure 3b) was tested in a 250-hour salt spray test. It can be seen that the galvanized steel sheet (Figure 3b) to which the anticorrosive fluorocarbon composition of the present invention has not been applied has obvious corrosion on the surface.

Similarly, referring to Figures 4a and 4b, which are respectively a 2.3mm-thick magnesium-aluminum-zinc coated steel sheet with the anticorrosive fluorocarbon composition of the present invention (Figure 4a) and without the anticorrosion of the present invention The fluorocarbon composition (Figure 4b) was tested in a 500-hour salt spray test. It can be seen that white rust is produced on the surface of the magnesium-aluminum-zinc-plated steel sheet (Figure 4b) to which the anticorrosive fluorocarbon composition of the present invention is not applied.

Similarly, referring to Figures 5a and 5b, which are respectively a hot-rolled weathering steel applied with the anticorrosive fluorocarbon composition of the present invention (Figure 5a) and without the anticorrosive fluorocarbon composition of the present invention (Figure 5a) Figure 5b) 480 hours of experimental test after 5wt% salt water spray test. It can be seen that the surface of the hot-rolled weathering steel (Figure 5b) to which the anticorrosive fluorocarbon composition of the present invention is not applied has obvious rust.

In summary, the anticorrosive fluorocarbon composition of the present invention is convenient to use, easy to brush and spray, and can be self-dried at room temperature. It can also be rolled and baked to form a film; more importantly, the anticorrosive fluorocarbon composition of the present invention Whether the material is baked or not, as long as the paint film is completely dry, it has an excellent anti-corrosion effect.

The above descriptions and descriptions are only descriptions of the preferred embodiments of this creation. Those with general knowledge of this technology should make other modifications based on the scope of patent application defined below and the above descriptions, but these modifications should still be made. It is the inventive spirit of this creation and within the scope of rights of this creation.

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Figure 1a is a photo showing the test result of a galvanized steel sheet to which the anticorrosive fluorocarbon composition of the present invention is applied; Figure 1b is a photo showing the test result of a galvanized steel sheet to which the anticorrosive fluorocarbon composition of the present invention is not applied; Figure 2a is a photo showing the test results of a magnesium-aluminum-zinc-coated steel sheet to which the anti-corrosion fluorocarbon composition of the present invention is applied; Figure 2b is a picture of a magnesium-aluminum-zinc-coated steel sheet that does not apply the anti-corrosion fluorocarbon composition of the present invention Test result photos; Figure 3a is a photo showing the test results of a galvanized steel sheet to which the anticorrosive fluorocarbon composition of the present invention is applied; Figure 3b is a picture of a galvanized steel sheet that does not apply the anticorrosive fluorocarbon composition of the present invention Photographs of the test results; Figure 4a is a photo showing the test results of a magnesium-aluminum-zinc steel plate to which the anticorrosive fluorocarbon composition of the present invention has been applied; Figure 4b is a photo showing a magnesium plated without the anticorrosive fluorocarbon composition of the present invention Photographs of the test results of aluminum-zinc steel sheets; Figure 5a is a photo showing the test results of a hot-rolled weathering steel (copper-containing steel plate) to which the anticorrosive fluorocarbon composition of the present invention is applied; Figure 5b shows that the corrosion protection of the present invention is not applied Photograph of test results of a hot-rolled weathering steel (copper-containing steel plate) of fluorocarbon composition.

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Claims (10)

An anticorrosive fluorocarbon composition, comprising: a first component, comprising 40 to 70 weight percent of a FEVE fluorocarbon resin, 5 to 30 weight percent of an ether, 5 to 30 weight percent of an alcohol, 0.2 to 2.5 Weight percent of a surface modifier, 0.3 to 2.5 weight percent of a defoaming agent, and 0.2 to 2.5 weight percent of a thixotropic agent; and a second component, including 3 to 30 weight percent of an isocyanate, wherein the first The weight percentage of the first component to the second component is 6:1 to 16:1. The anticorrosive fluorocarbon composition according to claim 1, wherein the first component includes a master pigment not exceeding 15% by weight. The anticorrosive fluorocarbon composition according to claim 1, wherein the first component includes a catalyst not exceeding 2.5% by weight. The anticorrosive fluorocarbon composition according to claim 1, wherein the second component includes not more than 30% by weight of monoethers. The anticorrosive fluorocarbon composition according to claim 1, wherein the second component includes not more than 30 weight percent of an alcohol. The anticorrosive fluorocarbon composition according to claim 1, wherein the weight percentage of the FEVE fluorocarbon resin is 50-60. The anticorrosive fluorocarbon composition according to claim 1, wherein the weight percentage of the isocyanate is 5-15. The anticorrosive fluorocarbon composition according to claim 1, wherein the ether is ethylene glycol butyl ether. The anticorrosive fluorocarbon composition according to claim 1, wherein the alcohol is n-butanol. A use of the anticorrosive fluorocarbon composition according to any one of claims 1 to 9 as a metal anticorrosion.

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