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Epoxy resin surface-coated with hydrophilic coating and preparation method and application thereof

A technology of hydrophilic coating and epoxy resin, applied in the direction of coating, etc., can solve problems such as complex manufacturing process, achieve the effect of simplifying the manufacturing process, simplifying the production process, and improving the firmness

Active Publication Date: 2017-06-30
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the uncured resin is usually chemically grafted and modified, and the resin needs to be treated with haloacetylation first, and then the resin is grafted and polymerized, and the production process is relatively complicated.

Method used

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  • Epoxy resin surface-coated with hydrophilic coating and preparation method and application thereof
  • Epoxy resin surface-coated with hydrophilic coating and preparation method and application thereof
  • Epoxy resin surface-coated with hydrophilic coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of preparation of the epoxy resin of surface coating hydrophilic coating, comprises the steps:

[0048] 1) Preparation of cured epoxy resin with surface grafted hydrophilic polymer

[0049] First prepare the reaction solution for later use: take 3g of acrylamide and put it into a 150ml beaker, add water until the total mass reaches 100g, stir well to dissolve. Add 0.03 g of ammonium persulfate to the reaction liquid, stir and dissolve it thoroughly, and prepare the reaction liquid.

[0050] Then cure the epoxy resin: take 5g of epoxy resin E44, dissolve it in 2g of epoxy diluent with a volume ratio of ethanol / acetone of 1:1, add 1g of m-xylylenediamine, and stir evenly. Coat the surface of the glass sheet, put it in an oven at 80°C for 2 hours, and take out the glass sheet cured with epoxy resin (hereinafter referred to as the sample sheet) and store it in a dry place for later use.

[0051] Finally, graft the epoxy resin: place the sample flat on the bottom of...

Embodiment 2

[0062] A kind of preparation of the epoxy resin of surface coating hydrophilic coating, method is the same as embodiment 1, and difference is:

[0063] In step 1), the dosage of the hydrophilic monomer is 5 g, the initiator is 0.15 g of azobisisobutylamidine hydrochloride, and the grafting reaction time is 2 h.

[0064] The final experimental results are similar to those in Example 1.

Embodiment 3

[0066] A kind of preparation of the epoxy resin of surface coating hydrophilic coating, method is the same as embodiment 1, and difference is:

[0067] The hydrophilic monomer in step 1) used 1 g of 2-propionamido-2-methylpropanesulfonic acid, the initiator used 0.01 g of potassium persulfate, and the grafting reaction time was 5 h.

[0068] In step 2), glyoxal is used as the cross-linking agent, and pH≈4 is adjusted.

[0069] The final experimental results are similar to those in Example 1.

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Abstract

The invention discloses epoxy resin surface-coated with a hydrophilic coating. The bonding mode between the hydrophilic coating and an epoxy resin layer is chemical crosslinking. The epoxy resin layer is cured epoxy resin surface-grafted with a hydrophilic polymer. The structural formula is as shown in the specification. In the formula, R1-R4 are connection points with other epoxy resin chain structures; R5-R6 are hydrophilic monomer polar groups; and n1 and n2 are natural numbers, n1 is less than or equal to 10 and greater than or equal to 1, and n2 is less than or equal to 50,000 and greater than or equal to 1. According to the method of the invention, harsh surface cleaning or coating of an intermediate bonding layer is not adopted. Through crosslinking, the cured epoxy resin surface-grafted with the hydrophilic polymer and the subsequently-coated hydrophilic coating are bonded firmly, thus achieving the purpose of firmly bonding the hydrophilic coating to the surface of an epoxy resin substrate. Different ionic monomers can be selected as a homopolymer or copolymer monomer of the hydrophilic coating. Sources of the raw materials are wide, and the hydrophilic coating with uniform surface property can be prepared.

Description

technical field [0001] The invention relates to the technical field of polymer functional surface materials. More specifically, it relates to an epoxy resin coated with a hydrophilic coating, its preparation method and application. Background technique [0002] At present, onshore oil storage and transportation mainly rely on pipelines. In alpine regions, storage and transportation mainly rely on heating and pressurization to realize the flow of crude oil. Since the temperature will gradually decrease during the flow process, the viscosity of crude oil will gradually increase. At the same time, as the temperature decreases, the waxes and other components in the crude oil will continue to precipitate and condense on the protective layer of the inner wall of the oil pipeline and the surface of the epoxy resin of the anti-rust layer, resulting in an increase in flow resistance and increasing the flow of crude oil. The pressure burden of transportation in the pipeline. Studie...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L63/00C08F283/10C08F220/56C08F220/06C08F220/58
CPCC08F283/10C08J7/0427C08J2351/08C08J2433/02C08J2433/26C08J2439/00C08F220/585
Inventor 张玉玺刘宇鹏王晨夕赵榆霞戴玉华吴飞鹏施盟泉张云龙
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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