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Novel nano-HDDA-EP system IPNS composite coating as well as preparation method and application thereof

A composite coating and surface modification nanotechnology, applied in the field of steel anti-corrosion coatings, can solve problems such as limited organic coatings, rust and corrosion of steel, threats to people's lives, etc., to achieve good mechanical properties, good corrosion resistance, and avoid wire damage The effect of processing

Active Publication Date: 2018-11-13
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Corrosion of steel has always been a problem to be solved in related fields such as anti-corrosion, because corrosion of steel will not only bring huge economic losses, but also in some buildings and mechanical parts, rust and corrosion of steel are still potential safety hazards, threatening the health of the people. life safety
[0003] The existing anticorrosion coatings mainly have the following deficiencies: (1) price: the special anticorrosion and antirust coatings on the market, especially the price of varnish coatings, are relatively high, generally around 22 yuan / kg, prepared by IPNS technology There are relatively few coatings; (2) Due to the immaturity of nanomaterial surface modification technology, there are limited organic coatings with nanomaterials added in the patent literature, and the miscellaneous and limited effects of nanomaterial modification processes also limit its application; (3) There are few related studies on adding modified nanomaterials to the interpenetrating polymer network system to form nano-IPNS composite coatings

Method used

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  • Novel nano-HDDA-EP system IPNS composite coating as well as preparation method and application thereof
  • Novel nano-HDDA-EP system IPNS composite coating as well as preparation method and application thereof
  • Novel nano-HDDA-EP system IPNS composite coating as well as preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0033] The preparation method comprises steps:

[0034] S101: Fully grind the nano silicon dioxide, and then dissolve it in xylene;

[0035] S102: under stirring, add silane coupling agent KH-560 to the mixture obtained in S101, and then stir for 25 to 35 minutes;

[0036] S103: After the stirring is completed, react in a constant temperature water bath at 70-90°C for 5-7 hours;

[0037] S104: Filter the transparent colloidal substance after the reaction, add drier DMP-30 to the filtered product; dry at 85-95° C. for 0.5-1.5 hours to obtain surface-modified nano silicon dioxide.

[0038] The present invention also provides a composite coating, the raw material components include: 40-45 parts by weight of E-44 epoxy resin, 6-8 parts by weight of talcum powder (filler), polyamide 650 (low molecular polyamide substance) 16 ~17 parts by weight, 12 parts by weight of butyl acetate (ester organic solvent), 12 parts by weight of xylene (aromatic hydrocarbon solvent), 0.8 to 0.9 par...

Embodiment 1

[0045] This embodiment provides a surface-modified nano-silica. The raw material components are calculated by mass percentage, including: 4.9% nano-silica, 2.5% silane coupling agent KH-560, 1.68% drier DMP-30, The balance is xylene.

[0046] The preparation method comprises steps:

[0047] S101: Fully grind the nano silicon dioxide, and then dissolve it in xylene;

[0048] S102: under stirring, add silane coupling agent KH-560 to the mixture obtained in S101, and then stir for 30 minutes;

[0049] S103: After the stirring is completed, react in a constant temperature water bath at 80°C for 6 hours;

[0050] S104: Filter the transparent colloidal substance after the reaction, and add a drier DMP-30 to the filtered product; dry at 90° C. for 1 hour to obtain surface-modified nano-silica.

[0051] The grafting rate of nano-silica after surface modification can reach 0.067066, and the Fourier transform infrared spectrum analysis picture is as follows figure 1 shown.

[0052]...

Embodiment 2

[0054] This embodiment provides a kind of composite coating, and raw material component comprises: E-44 epoxy resin 42 weight parts, talcum powder (filler) 7 weight parts, polyamide 650 (low molecular polyamide substance) 16.8 weight parts, acetic acid 12 parts by weight of butyl ester (ester organic solvent), 12 parts by weight of xylene (aromatic hydrocarbon solvent), 0.84 part by weight of surface-modified nano-silica, 0.02 part by weight of dibenzoyl peroxide, 1,6-hexyl 5.88 parts by weight of diol diacrylate (HDDA), 0.4 parts by weight of leveling agent and 0.10 parts by weight of defoamer.

[0055] The preparation method of composite coating comprises steps:

[0056] S1: Mix E-44 epoxy resin and polyamide 650 (low molecular weight polyamide) and stir thoroughly;

[0057] S2: Add 1,6-hexanediol diacrylate (HDDA) to the mixture obtained in S1, then add dibenzoyl peroxide, and stir thoroughly;

[0058] S3: React the mixture obtained in S2 in a water bath at 60°C for 1 hou...

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Abstract

The invention relates to a novel nano-HDDA-EP system IPNS composite coating as well as a preparation method and application thereof. The preparation method comprises the following steps: taking epoxyresin E44 and HDDA as main components and preparing an HDDA-EP interpenetrating polymer network system by adding a cross-linking agent, an initiator and the like and adopting an optimized specific process; then adding surface modified nano-silica modified by a coupling agent into the system, thus obtaining the novel nano-HDDA-EP system IPNS composite coating. The coating, due to small particle size of nanomaterials, has surface effect, small size effect and the like which do not exist in macroscopic particles, so that the penetration action is generated in the process of combining the coatingwith organic matters and mechanical strength, toughness, wear resistance, aging resistance and the like of polymer materials are greatly improved; in addition, the performance of the two substances can be integrated by constructing the HDDA-EP interpenetrating polymer network system.

Description

technical field [0001] The invention relates to the technical field of steel anticorrosion coatings, in particular to a novel nano HDDA-EP system IPNS composite coating and its preparation method and application. Background technique [0002] Corrosion of steel has always been a problem to be solved in related fields such as anti-corrosion, because corrosion of steel will not only bring huge economic losses, but also in some buildings and mechanical parts, rust and corrosion of steel are still potential safety hazards, threatening the health of the people. life safety. [0003] The existing anticorrosion coatings mainly have the following deficiencies: (1) price: the special anticorrosion and antirust coatings on the market, especially the price of varnish coatings, are relatively high, generally around 22 yuan / kg, prepared by IPNS technology There are relatively few coatings; (2) Due to the immaturity of nanomaterial surface modification technology, there are limited organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/62C09D163/00C09D135/02C09D5/08C09D7/61
CPCC08K2201/011C08L2205/04C08L2312/00C09D5/08C09D163/00C09D7/61C09D7/62C08L35/02C08K13/06C08K9/06C08K3/36C08K3/34
Inventor 冯佃臣魏新张胤胡晓燕张羊换孙学贤
Owner INNER MONGOLIA UNIV OF SCI & TECH
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