Polysilazane modified epoxy one-component anti-corrosion coating slurry, coating and preparation method

A polysilazane and anti-corrosion coating technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problem that anti-corrosion coatings cannot achieve the unity of coating method, processing efficiency and anti-corrosion performance, and the impact resistance of polysilazane coatings Poor performance, unable to replace hot-dip galvanizing and other problems, to achieve the effect of stable and controllable quality, easy adjustment of thickness, stable structure and performance

Active Publication Date: 2021-11-16
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a polysilazane modified epoxy one-component anti-corrosion coating slurry, coating and preparation method, which can at least solve one of the following technical problems: (1) the existing environmental Oxygen resin anti-corrosion coatings are generally used in the form of two components. When they are mixed and formulated into dip coating solutions, reactions are prone to occur during the application process, resulting in unstable dip coating solutions and affecting later use; (2) the existing polysilazane The impact resistance of the coating is not good, and there is a risk of the coating falling off when bumping occurs; (3) The existing anti-corrosion coating cannot achieve the unity of coating method, processing efficiency and anti-corrosion performance, and cannot replace hot-dip galvanizing

Method used

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  • Polysilazane modified epoxy one-component anti-corrosion coating slurry, coating and preparation method
  • Polysilazane modified epoxy one-component anti-corrosion coating slurry, coating and preparation method
  • Polysilazane modified epoxy one-component anti-corrosion coating slurry, coating and preparation method

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preparation example Construction

[0059] In another aspect, the present invention provides a method for preparing the above-mentioned polysilazane-modified epoxy one-component anti-corrosion coating slurry, comprising the following steps:

[0060] Step 1. According to the proportion, add polysilazane modified epoxy resin to environmental solvent for mixing, and add catalyst and filler under stirring condition;

[0061] Step 2. After the mixture is uniformly dispersed, transfer it to a ball mill tank and grind it evenly to obtain polysilazane modified epoxy anticorrosion coating slurry.

[0062] It should be noted that in the above step 1, in order to facilitate stirring, the polysilazane-modified epoxy resin is firstly added into an environmentally friendly solvent for dispersion, and the catalyst and filler are added under stirring conditions.

[0063] Specifically, in the above step 1, the stirring speed is 500r / min-3000r / min, and the stirring time is 0.5h-1h.

[0064] The present invention also provides a ...

Embodiment 1

[0084] This embodiment provides a polysilazane modified epoxy resin 1, which is prepared by the following method:

[0085] Weigh 50 parts by mass of polysilazane OPZ118 and 50 parts by mass of epoxy resin E51 and mix and stir at a speed of 200 r / min, a reaction temperature of 100° C., and a reaction time of 1 h. Serve as a spare.

Embodiment 2

[0087] This embodiment provides a polysilazane modified epoxy resin 2, which is prepared by the following method:

[0088] Weigh 80 parts by mass of polysilazane OPZ118 and 20 parts by mass of epoxy resin E51 and mix and stir at a speed of 200 r / min, a reaction temperature of 120° C., and a reaction time of 1 h. Serve as a spare.

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Abstract

The invention relates to a polysilazane modified epoxy anti-corrosion one-component coating slurry, coating and preparation method, and belongs to the technical field of anti-corrosion coatings. The invention solves the problem that the existing anti-corrosion coating cannot realize the unification of coating mode, processing efficiency and anti-corrosion performance. The components of the polysilazane modified epoxy one-component anti-corrosion coating slurry include: polysilazane modified epoxy resin 1%-99%, catalyst 0.01%-0.1%, filler 1%-70% and 20% to 90% of environmentally friendly solvents. The polysilazane-modified epoxy one-component anti-corrosion coating is obtained by applying the above-mentioned polysilazane-modified epoxy one-component anti-corrosion coating slurry to the surface of the protected substrate, and then heating and curing at a medium and low temperature. . The anti-corrosion coating of the invention has good adhesion, good flexibility and excellent anti-corrosion performance.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, in particular to a polysilazane-modified epoxy anti-corrosion one-component coating slurry, coating and preparation method. Background technique [0002] Hot-dip galvanizing (galvanizing), also known as hot-dip galvanizing and hot-dip galvanizing, is an effective metal anti-corrosion method, mainly used in metal structure facilities in various industries. The hot-dip galvanizing process is to immerse the rust-removed steel parts in the molten zinc at about 500 ° C, so that the surface of the steel parts is attached with a zinc layer, so as to achieve the purpose of anti-corrosion. The specific process of hot-dip galvanizing is: pickling of finished products - water washing - adding auxiliary plating solution - drying - rack plating - cooling - chemical treatment - cleaning - polishing - hot-dip galvanizing is completed. Hot-dip galvanizing has the characteristics of high-efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D187/00C09D5/08C08G81/00
CPCC08G81/00C09D5/08C09D187/005
Inventor 张宗波邹铭王丹黄文文周晓龙徐彩虹
Owner INST OF CHEM CHINESE ACAD OF SCI
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