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Hardening liquid and preparation method thereof

A hardening liquid and curing resin technology, which is applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of incomplete surface modification of particles, poor dispersion and mechanical properties, and limited improvement of coating mechanical properties And other issues

Inactive Publication Date: 2021-08-27
广东海浦倍尔新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, on the one hand, the mechanical force of the magnetic stirrer used in the modification is weak, and it is difficult to open the nanoparticle aggregates, resulting in incomplete modification of the particle surface; on the other hand, the selection of the modifier is only for dispersion. The combination between the particles and the organic matrix is ​​not tight. When the coating resists external loss, the nanoparticle solvent slips or falls off, so the mechanical properties of the coating are limited.
[0005] As a kind of coating, UV curing liquid has attracted extensive attention due to its characteristics of environmental protection and energy saving. However, as mentioned above, UV curing liquid also has the dispersibility existing in existing coatings. and poor mechanical properties

Method used

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  • Hardening liquid and preparation method thereof
  • Hardening liquid and preparation method thereof
  • Hardening liquid and preparation method thereof

Examples

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Effect test

Embodiment 1

[0065] An embodiment of the modified inorganic nanoparticles contained in a hardening solution of the present invention, the modified inorganic nanoparticles of this embodiment are prepared by the following method:

[0066] (1) Pre-hydrolysis: according to H 2 The ratio of O: γ-methacryloxytrimethoxysilane (KH570): ethanol = 13.5: 9: 27g, first mix the ethanol and water, then add γ-methacryl while stirring with a magnet Oxytrimethoxysilane (KH570), continue to stir for 3 minutes after adding, then add acetic acid dropwise, adjust the pH value to 4 (pH meter test), the water bath temperature is 50 degrees, and hydrolyze for 3 hours;

[0067] (3) Pre-mixing: add isopropanol to 400g in the hydrolyzed solution for later use, this is solution A;

[0068] (4) Grinding and modifying: the zirconium beads with a diameter of 0.6mm are filled in the grinding cavity of a 0.3L sand mill, and the volume filling rate of the zirconium beads in the grinding cavity is 80%; Pour in, start the ...

Embodiment 2

[0071] An embodiment of the modified inorganic nanoparticles contained in a hardening solution of the present invention, the modified inorganic nanoparticles of this embodiment are prepared by the following method:

[0072] (1) Pre-hydrolysis: according to H 2 The ratio of O: γ-methacryloxytrimethoxysilane (KH570): ethanol = 13.5: 9: 27g, first mix the ethanol and water, then add γ-methacryl while stirring with a magnet Oxytrimethoxysilane (KH570), continue to stir for 3 minutes after adding, then add acetic acid dropwise, adjust the pH value to 4 (pH meter test), the water bath temperature is 50 degrees, and hydrolyze for 3 hours;

[0073] (2) Pre-mixing: add isopropanol to 400g in the hydrolyzed solution for later use, this is solution A;

[0074] (3) Grinding and modifying: then the zirconium beads of 0.6 mm in diameter are filled into the grinding cavity of the 0.3L sand mill, and the volume filling rate of the zirconium beads in the grinding cavity is 80%; Pour it into ...

Embodiment 3

[0077] An embodiment of the modified inorganic nanoparticles contained in a hardening solution of the present invention, the modified inorganic nanoparticles of this embodiment are prepared by the following method:

[0078] (1) Pre-hydrolysis: according to H 2 O: KH560: ethanol = 13.5: 9: 27g ratio, first mix ethanol and water, then add KH560 while stirring with a magnet, continue stirring for 3 minutes after adding, then add acetic acid dropwise, adjust the pH value to 4( pH meter test), water bath temperature is 50 degrees, hydrolysis 3h;

[0079] (2) Pre-mixing: add isopropanol to 400g in the hydrolyzed solution for later use, this is solution A;

[0080] (3) Grinding and modifying: the zirconium beads with a diameter of 0.6mm are filled in the grinding cavity of a 0.3L sand mill, and the volume filling rate of the zirconium beads in the grinding cavity is 80%; Pour in, start the sand mill, and gradually add nano-silica powder, wherein the ratio of powder to modifier is S...

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Abstract

The invention discloses a hardening liquid. The hardening liquid comprises the following components in percentage by mass: 1-70% of modified inorganic nanoparticles, 30-99% of curable resin or oligomer, 0-5% of an additive and 0-65% of a solvent, the modified inorganic nano particles comprise inorganic nano particles and surface grafting modified chain segments bonded with the inorganic nano particles; the surface grafting modified chain segment comprises at least one polymerizable group; and the surface grafting modification chain segment is bonded with the inorganic nano particles through a-SiR1R2-group and / or-R1OTiOR2-group, wherein R1R2 is at least one of alkyl, alkoxy, alkynyl, aryl, acrylic acid group, ester group, ether group and carboxyl. According to the hardening liquid, the usage amount of the dispersing agent can be reduced, even the inorganic nano particles can be stably dispersed without adding the dispersing agent, and a coating of the hardening liquid has good mechanical performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a hardening solution and a preparation method thereof. Background technique [0002] Coating is a complex multi-phase dispersion system composed of film formers, dispersion media, fillers and additives. Each component plays its role in the process of forming a coating. The fillers are dispersed in the film formers in a fine solid state. To increase the mechanical strength of the coating, etc. During the dispersion process, the filler opens the aggregates with the help of mechanical force, and at the same time interacts with the dispersion medium and the film-former—the process of wetting, dispersion, and stabilization to form a stable dispersion system. Therefore, the dispersibility of the filler is related to its crystal form, particle size and particle size distribution, and more importantly, its surface properties - surface tension, polar groups and water content. Different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/62C09D4/02C09D4/06C09D127/12C09D163/00C09D175/04C09D167/00C09D133/04C09D175/14C09D183/08
CPCC09D7/62C09D4/06C09D127/12C09D163/00C09D175/04C09D167/00C09D133/04C09D175/14C09D183/08
Inventor 邹新艺祝邦瑞秦晓光
Owner 广东海浦倍尔新材料有限公司
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