Anti-corrosion polycarbonate sheet and preparation method thereof

A technology of polycarbonate board and polycarbonate, which is applied in the direction of anti-corrosion coatings and coatings, and can solve the problems of non-corrosion resistance and easy aging

Pending Publication Date: 2022-02-11
安徽坤涂新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polycarbonate sheet has high mechanical strength and good creep resistance. Even at low temperature, it has very high impact strength and rigid retention in a large temperature range; but it is not corrosion-resistant and easy to age. Therefore, it is provided An anti-corrosion polycarbonate sheet is a technical problem to be solved at present

Method used

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  • Anti-corrosion polycarbonate sheet and preparation method thereof
  • Anti-corrosion polycarbonate sheet and preparation method thereof
  • Anti-corrosion polycarbonate sheet and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The present embodiment provides a kind of anticorrosion coating, and preparation steps are as follows:

[0034] Step 1: Stir and mix the emulsifier, monomer and 2 / 3 of the total mass of deionized water at 25°C for 30 minutes to obtain a pre-emulsion;

[0035] The second step is to mix the remaining deionized water and sodium bicarbonate, add 1 / 3 of the pre-emulsion, heat up to 70°C, add 1 / 2 of the total mass of the initiator solution, stir and mix at a speed of 100r / min for 1h, and obtain seed emulsion;

[0036] The third step is to add the remaining pre-emulsion and initiator solution to the seed emulsion, and keep it warm at 70°C for 4 hours. After the reaction, adjust the pH value to 8 with 25% ammonia water by mass fraction, and then cool to room temperature to obtain an anti-corrosion coating. .

[0037] The emulsifier is a mixture of alkylphenol polyoxyethylene ether and sodium lauryl sulfate at a mass ratio of 1:1, and the monomers are methyl methacrylate, modi...

Embodiment 2

[0045] The present embodiment provides a kind of anticorrosion coating, and preparation steps are as follows:

[0046] Step 1: Stir and mix the emulsifier, monomer and 2 / 3 of the total mass of deionized water at 25°C for 30 minutes to obtain a pre-emulsion;

[0047] The second step is to mix the remaining deionized water and sodium bicarbonate, add 1 / 3 of the pre-emulsion, heat up to 70°C, add 1 / 2 of the total mass of the initiator solution, and stir and mix at a speed of 150r / min for 1h to obtain seed emulsion;

[0048] The third step is to add the remaining pre-emulsion and initiator solution to the seed emulsion, and keep it warm for 5 hours at 70°C. After the reaction, adjust the pH value to 8 with ammonia water with a mass fraction of 25%, and then cool to room temperature to obtain an anti-corrosion coating. .

[0049] The emulsifier is a mixture of alkylphenol polyoxyethylene ether and sodium lauryl sulfate at a mass ratio of 1:1, and the monomers are methyl methacryl...

Embodiment 3

[0057] The present embodiment provides a kind of anticorrosion coating, and preparation steps are as follows:

[0058] Step 1: Stir and mix the emulsifier, monomer and 2 / 3 of the total mass of deionized water at 25°C for 30 minutes to obtain a pre-emulsion;

[0059] In the second step, mix the remaining deionized water and sodium bicarbonate, add 1 / 3 of the pre-emulsion, heat up to 70°C, add 1 / 2 of the total mass of the initiator solution, stir and mix at a speed of 200r / min for 1h, and obtain seed emulsion;

[0060] The third step is to add the remaining pre-emulsion and initiator solution to the seed emulsion, and keep it warm for 6 hours at 70°C. After the reaction, adjust the pH value to 8 with ammonia water with a mass fraction of 25%, and then cool to room temperature to obtain an anti-corrosion coating. .

[0061] The emulsifier is a mixture of alkylphenol polyoxyethylene ether and sodium lauryl sulfate at a mass ratio of 1:1, and the monomers are methyl methacrylate,...

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Abstract

The invention relates to an anti-corrosion polycarbonate sheet and a preparation method thereof, and belongs to the technical field of sheet preparation, wherein the preparation method comprises the following steps: step 1,a polycarbonate sheet is cleaned and dried to obtain a pretreated polycarbonate sheet; step 2, the pretreated polycarbonate sheet is placed under a UVC lamp to be irradiated for 0.5 h, and a surface modified polycarbonate sheet is obtained; and step 3, the surface modified polycarbonate sheet is placed in an anti-corrosion coating, standing is conducted for 1 min, then the polycarbonate sheet is taken out and cured, and the anti-corrosion polycarbonate sheet is obtained, wherein the anti-corrosion coating is a fluorine-containing water-based acrylate coating, has the characteristics of environmental protection and health, contains a relatively long F-C chain, and can improve the hydrophobicity and corrosion resistance of the plate; modified montmorillonite is added into the anti-corrosion coating, so that the diffusion path of corrosion ions can be prolonged, corrosion liquid and oxidizing gas are prevented from entering, and the anti-corrosion performance and the anti-aging performance of the sheet are improved.

Description

technical field [0001] The invention belongs to the technical field of plate preparation, and in particular relates to an anti-corrosion polycarbonate plate and a preparation method thereof. Background technique [0002] Polycarbonate is a general term for a class of polymers containing carbonate groups (-OROCO-) in the molecular chain. With the different types of R groups, it can be divided into aliphatic, alicyclic, aromatic and other polycarbonates. , At room temperature, polycarbonate is resistant to inorganic and organic alkene acid solutions, salt solutions, saturated potassium bromide solutions; resistant to aliphatic hydrocarbons, naphthenes and most alcohols and oils. However, it is not resistant to lye, concentrated sulfuric acid, concentrated nitric acid, aqua regia and furfural, etc. The sodium hydroxide aqueous solution of alkenes can cause it to be slowly destroyed, and it will turn yellow after entering a 70% nitric acid solution at 70°C for a week, and occur....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/048C08J7/12C08L69/00C09D5/08C09D133/12C09D7/62C08F220/14C08F220/18C08F220/24
CPCC08J7/048C08J7/0427C08J7/123C09D5/08C09D133/16C09D7/62C08F220/14C08J2369/00C08J2433/12C08F220/1804C08F220/24C08F2500/26C08K9/06C08K9/04C08K3/346
Inventor 蒋勇
Owner 安徽坤涂新材料科技有限公司
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