Macro preparation method of boron nitride epoxy resin transparent coating

A boron nitride epoxy resin and transparent coating technology, which is applied in the direction of epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of strong and difficult large-scale preparation, poor dispersion, and industrial application obstacles, and achieve sustainable Effect of long-term protective performance, high transparency and good light transmission performance

Inactive Publication Date: 2020-11-24
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the main bottlenecks that plague h-BNNSs as anti-corrosion fillers are: ① The chemical stability of h-BNNSs is excellent, the inertness is extremely strong and it is not easy to prepare on a large scale, which leads to great obstacles in industrial application, so it is necessary to be able to prepare h-BNNSs BNNSs must ensure high yield at the same time; ② h-BNNSs have poor dispersion in water or organic solvents, and the dispersion will determine the shielding effect of h-BNNSs, which is the key factor to improve its corrosion resistance

Method used

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  • Macro preparation method of boron nitride epoxy resin transparent coating
  • Macro preparation method of boron nitride epoxy resin transparent coating

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Embodiment 1

[0027] Embodiment 1 A kind of macro-preparation method of boron nitride epoxy resin transparent coating comprises the following steps:

[0028] ⑴ After mixing hexagonal boron nitride (h-BN) and polyether block amide 1657 (Pebax) at a mass ratio (g / g) of 2:13, place it in a high-temperature shear furnace and mechanically shear it at 180°C for 4 hours Finally, the mixture is extruded, and the mixture is naturally cooled to room temperature to obtain the Pebax functionalized hexagonal boron nitride nanosheet composite material, which is referred to as the Pebax-BNNSs composite material.

[0029] (2) According to the ratio of 0.01 g / mL, the Pebax-BNNSs composite material was dissolved in ethanol aqueous solution, heated to 120°C with an oil bath and fully dissolved under the action of magnetic stirring to obtain a suspension; Filtrate and disperse with an ultrasonic machine to obtain a Pebax-BNNSs dispersion. The purpose of filtering and dispersing is to filter larger particles a...

Embodiment 2

[0031] Embodiment 2 A kind of macro-preparation method of boron nitride epoxy resin transparent coating comprises the following steps:

[0032] ⑴ After mixing hexagonal boron nitride (h-BN) and polyether block amide 1657 (Pebax) at a mass ratio of 2:13, place it in a high-temperature shear furnace at 180°C for 4 hours and extrude the mixture , after the mixture is naturally cooled to room temperature, the Pebax functionalized hexagonal boron nitride nanosheet composite material is obtained, which is referred to as the Pebax-BNNSs composite material.

[0033] (2) According to the ratio of 0.02 g / mL, the Pebax-BNNSs composite material was dissolved in ethanol aqueous solution, heated to 150°C with an oil bath and fully dissolved under the action of magnetic stirring to obtain a suspension; the suspension was successively washed with a centrifuge Filtrate and disperse with an ultrasonic machine to obtain a Pebax-BNNSs dispersion. The purpose of filtering and dispersing is to fil...

Embodiment 3

[0035] Embodiment 3 A kind of macro-preparation method of boron nitride epoxy resin transparent coating comprises the following steps:

[0036] ⑴ After mixing hexagonal boron nitride (h-BN) and polyether block amide 1657 (Pebax) at a mass ratio of 2:15, place it in a high-temperature shearing furnace and mechanically shear it at 300°C for 3 hours, then extrude the mixture , after the mixture is naturally cooled to room temperature, the Pebax functionalized hexagonal boron nitride nanosheet composite material is obtained, which is referred to as the Pebax-BNNSs composite material.

[0037] (2) Dissolve the Pebax-BNNSs composite material in ethanol aqueous solution at a ratio of 0.03 g / mL, heat it to 180°C with an oil bath and stir it under magnetic force until it is fully dissolved to obtain a suspension; Filtrate and disperse with an ultrasonic machine to obtain a Pebax-BNNSs dispersion. The purpose of filtering and dispersing is to filter larger particles and obtain high-quali...

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Abstract

The invention relates to a macro preparation method of a boron nitride epoxy resin transparent coating. The macro preparation method comprises the following steps: (1) performing mixing on hexagonal boron nitride and polyether block amide 1657, and carrying out mechanical shearing, extrusion and cooling to obtain a Pebax functionalized hexagonal boron nitride nanosheet composite material, whereinthe composite material is marked as a Pebax-BNNSs composite material; (2) dissolving the Pebax-BNNSs composite material in an ethanol water solution, and performing heating in an oil bath until the Pebax-BNNSs composite material is fully dissolved to obtain a suspension; carrying out filtering and dispersing on the suspension to obtain a Pebax-BNNSs dispersion liquid; and (3) adding the Pebax-BNNSs dispersion liquid into the epoxy resin, uniformly mixing by ultrasonic and thermal stirring, removing the solvent by using a rotary evaporation method, finally adding an epoxy resin curing agent, and violently stirring for 5 minutes to obtain the boron nitride epoxy resin transparent coating. The method is simple and easy to implement, and the obtained coating has good light transmission performance, has continuous and long-acting protection performance on a metal matrix and is expected to be applied to the fields of marine mechanical equipment, ultra-precision machinery and the like.

Description

technical field [0001] The invention relates to the technical field of metal anticorrosion protection, in particular to a macro-preparation method of a boron nitride epoxy resin transparent coating. Background technique [0002] Metal materials (carbon steel, aluminum alloy and copper alloy, etc.) have good mechanical properties and good processing properties, such as casting, plastic cutting, welding, etc., and have been widely used in pipeline transportation, construction, chemical industry, petroleum industry, navigation and Aviation and other national economy and national defense fields. Because these metal materials are often exposed to strong corrosive media in different working environments, such as acid, alkali, salt, etc., they inevitably face serious corrosion problems, especially under high temperature, high pressure, and high flow conditions, corrosion problems become more prominent and serious. In addition, my country has huge marine resources. Whether it is m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
CPCC08K2003/385C08K2201/011C09D5/08C09D163/00C08K9/08C08K3/38
Inventor 于元烈安璐璐高凯雄张俊彦
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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