Self-lubricating hydrophobic silicon-acrylic emulsion, and preparation method and application thereof

A silicone-acrylic emulsion, self-lubricating technology, applied in the field of coatings, can solve the problems of cumbersome practical application, easy loss, initial release has not been paid attention to and solved, and achieves stable and low adhesion characteristics, good anti-fouling performance, long-lasting The effect of stabilizing the antifouling behavior

Active Publication Date: 2019-10-22
CARPOLY CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of these methods inject lubricant after the coating is formed, which is a bit cumbersome for practical applications (WO2018191523A1; Li J, et al. Advanced Functional Materials, 2018: 1802317)
Thanks to microcapsule technology, hydrophobic lubricants have been successfully introduced into water-based film-forming systems, but most of the purpose of doing so is to achieve ...

Method used

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  • Self-lubricating hydrophobic silicon-acrylic emulsion, and preparation method and application thereof
  • Self-lubricating hydrophobic silicon-acrylic emulsion, and preparation method and application thereof
  • Self-lubricating hydrophobic silicon-acrylic emulsion, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A self-lubricating hydrophobic silicone acrylic emulsion, in parts by weight, comprises the following components:

[0063] 90 parts of mixed monomers, 1.0 parts of hydrophobic lubricants, 1.0 parts of functional monomers, 0.5 parts of coupling monomers, 0.2 parts of crosslinking aids, 2 parts of emulsifiers, 1.0 parts of co-emulsifiers, 0.75 parts of initiators, pH buffer 0.5 parts of agent, 100 parts of deionized water; the mixed monomer includes hard monomer and soft monomer, wherein the hard monomer is styrene, and the soft monomer is butyl acrylate.

[0064] The mass ratio of the hard monomer and the soft monomer in the mixed monomer is 5.5:3.0.

[0065] The hydrophobic lubricant is polydimethylsiloxane.

[0066] The functional monomer is acrylic acid.

[0067] The coupling monomer is γ-methacryloxypropyltrimethoxysilane.

[0068] The crosslinking aid is a glycidyl ether siloxane oligomer, and its structural formula is:

[0069]

[0070] The emulsifier is all...

Embodiment 2

[0087] A self-lubricating hydrophobic silicone acrylic emulsion, in parts by weight, comprises the following components:

[0088] 100 parts of mixed monomer, 4 parts of hydrophobic lubricant, 2 parts of functional monomer, 2 parts of coupling monomer, 0.4 parts of crosslinking aid, 3 parts of emulsifier, 2 parts of co-emulsifier, 1 part of initiator, pH buffer 1 part of agent, 120 parts of deionized water; the mixed monomer includes hard monomer and soft monomer, wherein the hard monomer is methyl methacrylate, and the soft monomer is ethyl acrylate.

[0089] The mass ratio of hard monomer and soft monomer in the mixed monomer is 6:4.

[0090] The hydrophobic lubricant is polydimethylsiloxane terminated by silanol, and its viscosity is 100-500mm 2 / s (25°C).

[0091] The functional monomer is methacrylic acid;

[0092] The coupling monomer is γ-methacryloxypropyltriisopropoxysilane.

[0093] The crosslinking aid is a glycidyl ether siloxane oligomer, and its structural for...

Embodiment 3

[0112] A self-lubricating hydrophobic silicone acrylic emulsion, in parts by weight, comprises the following components:

[0113] 120 parts of mixed monomer, 6.0 parts of hydrophobic lubricant, 4.0 parts of functional monomer, 3.0 parts of coupling monomer, 1 part of crosslinking aid, 4 parts of emulsifier, 3.0 parts of co-emulsifier, 2 parts of initiator, pH buffer 2 parts of agent and 150 parts of water; the mixed monomer includes hard monomer and soft monomer, wherein the hard monomer is styrene, and the soft monomer is 2-ethylhexyl acrylate.

[0114] The mass ratio of the hard monomer and the soft monomer in the mixed monomer is 7.0:4.5.

[0115] The hydrophobic lubricant is polydimethylsiloxane.

[0116] The functional monomer is 2 parts of acrylic acid and 2 parts of methacrylic acid.

[0117] The coupling monomer is selected from 1 part of γ-methacryloxypropyl trimethoxysilane and 2 parts of γ-methacryloxypropyl triisopropoxysilane.

[0118] The crosslinking aid is a...

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Abstract

The invention discloses a self-lubricating hydrophobic silicone-acrylic emulsion. The self-lubricating hydrophobic silicone-acrylic emulsion comprises the following components in parts by weight: 90-120 parts of mixed monomers, 1.0-6.0 parts of a hydrophobic lubricant, 1.0-4.0 parts of a functional monomer, 0.5-3.0 parts of a coupling monomer, 0.2-1 part of a cross-linking aid, 2-4 parts of an emulsifier, 1.0-3.0 parts of a co-emulsifier, 0.75-2 parts of an initiator, 0.5-3 parts of a pH buffering agent and 90-180 parts of water, wherein the mixed monomer includes a hard monomer and a soft monomer, the hard monomer is at least one selected form the group consisting of styrene and methyl methacrylate, and the soft monomer is at least one selected form the group consisting of butyl acrylate,ethyl acrylate, and 2-ethylhexyl acrylate. In addition, the invention provides a waterborne anti-fouling coating including the self-lubricating hydrophobic silicone-acrylic emulsion. The self-lubricating hydrophobic silicone-acrylic emulsion of the invention has a core-shell structure, which facilitates uniform distribution and rapid release of the hydrophobic lubricant; and the waterborne anti-fouling of the invention has good mechanical properties and anti-fouling properties, small sliding angle on water and good self-cleaning performance.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a self-lubricating hydrophobic silicon-acrylic emulsion and a preparation method and application thereof. Background technique [0002] Due to its unique "repelling" characteristics, hydrophobic coatings have broad application prospects in the fields of anti-fouling, anti-fog, anti-icing, corrosion resistance, oil-water separation, fluid drag reduction, and biomedical applications. The global hydrophobic coatings market was valued at USD 1.3 billion in 2015 and is expected to reach USD 1.8 billion by 2020. In recent years, hydrophobic coatings have attracted extensive attention of researchers and have been gradually applied to the field of materials. [0003] In the self-cleaning field of construction engineering, the demand for water-based coatings to replace traditional solvent-based coatings (CN104559522A; CN104559786A; US20120107581A1) is becoming stronger and stronger. Many patents ...

Claims

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Application Information

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IPC IPC(8): C08F257/02C08F212/08C08F220/18C08F230/08C09D151/00C09D5/16
CPCC08F257/02C09D151/003C09D5/1662C08F212/08
Inventor 张浩谭振华瞿金清陈玉泉董海晖汪金
Owner CARPOLY CHEM GRP
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