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A kind of carbon nanotube modified polysiloxane coating and preparation method thereof

A carbon nanotube modification and polysiloxane technology, which is applied in epoxy resin coatings, conductive coatings, anti-corrosion coatings, etc., can solve the problems of low stability of anti-static performance of coatings, vulnerability to weather, poor protection effect, etc. , to achieve stable antistatic performance, excellent physical and mechanical properties, and easy inspection and cleaning

Active Publication Date: 2022-06-24
IANGSU JINLING SPECIAL PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of carbon nanotube modified polysiloxane coating and preparation method thereof, to solve the common epoxy system and inorganic zinc-rich coating that adopt antistatic fillers such as conductive mica or carbon black in the prior art. The protective antistatic coating of the layer system has poor protective effect, the stability of the antistatic performance of the coating decreases over time, and the technical problems of being easily affected by the weather

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  • A kind of carbon nanotube modified polysiloxane coating and preparation method thereof
  • A kind of carbon nanotube modified polysiloxane coating and preparation method thereof

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Embodiment 1

[0036] This embodiment provides a carbon nanotube-modified polysiloxane coating, which includes a main agent and a curing agent, and the weight ratio of the main agent and the curing agent is 10:3, and is prepared by the following steps:

[0037] 1. Prepare the main agent: add 30 parts by weight of phenolic epoxy resin in the reaction kettle, add 10 parts by weight of o-xylene, 0.2 parts by weight of dispersant, and 0.2 parts by weight of defoamer in turn under uniform stirring, and keep it after high-speed dispersion is uniform. Add 0.2 parts by weight of single-walled carbon nanotubes with uniform stirring, and disperse at high speed for 20 minutes, then add 15 parts by weight of mica powder, 5 parts by weight of feldspar powder, 3 parts by weight of mica iron oxide, 10 parts by weight of glass flakes, and 10 parts by weight of titanium dioxide. , disperse at a high speed to a fineness of ≤60um, filter and pack the material to obtain the main agent, wherein the mica powder is...

Embodiment 2

[0041] The present embodiment provides a carbon nanotube-modified polysiloxane coating, which includes a main agent and a curing agent, and the weight ratio of the main agent and the curing agent is 3:1, and is prepared by the following steps:

[0042] 1. Prepare the main agent: add 45 parts by weight of phenolic epoxy resin to the reaction kettle, add 15 parts by weight of m-xylene, 0.3 parts by weight of dispersant, and 0.4 parts by weight of defoamer in turn under uniform stirring, and keep it after high-speed dispersion evenly. Add 0.3 parts by weight of single-walled carbon nanotubes with uniform stirring, and disperse at a high speed for 30 minutes, then add 10 parts by weight of mica powder, 15 parts by weight of feldspar powder, 5 parts by weight of mica iron oxide, 20 parts by weight of glass flakes, and 15 parts by weight of titanium dioxide. , disperse at a high speed to a fineness of ≤60um, filter and pack the material to obtain the main agent, wherein the mica powd...

Embodiment 3

[0046] This embodiment provides a carbon nanotube-modified polysiloxane coating, which includes a main agent and a curing agent, and the weight ratio of the main agent and the curing agent is 2:1, and is prepared by the following steps:

[0047]1. Prepare the main agent: add 40 parts by weight of phenolic epoxy resin to the reaction kettle, add 15 parts by weight of o-xylene, 0.5 parts by weight of dispersant, and 0.5 part by weight of defoamer in turn under uniform stirring, keep it after the high-speed dispersion is uniform. Add 0.4 parts by weight of single-walled carbon nanotubes with uniform stirring, and disperse at high speed for 40 minutes, then add 12 parts by weight of mica powder, 10 parts by weight of feldspar powder, 4 parts by weight of mica iron oxide, 15 parts by weight of glass flakes, and 12 parts by weight of titanium dioxide. , disperse at a high speed to a fineness of ≤60um, filter and pack the material to obtain the main agent, wherein the mica powder is 6...

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Abstract

The invention discloses a carbon nanotube modified polysiloxane coating and a preparation method thereof. The coating includes a main agent and a curing agent, and the mass ratio of the main agent to the curing agent is (10-15): (3-5) The main agent includes the following components by weight: 30-45 parts of epoxy resin, 0.2-0.5 parts of dispersant, 10-20 parts of main agent solvent, 0.3-0.8 parts of thixotropic agent, and 0.2-0.5 parts of defoamer , 0.2-0.4 parts of carbon nanotubes, 18-35 parts of flaky fillers, 10-20 parts of corrosion-resistant fillers, 10-15 parts of pigments; the curing agent includes the following components in parts by weight: amino polysiloxane resin 85- 95 parts, curing agent solvent 5 to 15 parts. The polysiloxane of the present invention can modify carbon nanotubes to effectively improve their dispersion performance, thereby forming an excellent and stable conductive network without blind spots on the coating surface, stable antistatic performance, and extremely low addition of carbon nanotubes. The color of the coating is lighter, which is convenient for inspection and cleaning; the main film-forming substance is an organic-inorganic hybrid structure of epoxy resin and silicone resin, which makes the coating have excellent physical and mechanical properties and medium resistance.

Description

technical field [0001] The invention relates to the technical field of coating coatings, in particular to a carbon nanotube modified polysiloxane coating and a preparation method thereof. Background technique [0002] Existing protective and static-conducting coatings for oil storage tanks usually use common epoxy systems and inorganic zinc-rich coating systems. [0003] Among them, ordinary epoxy systems have low solid content, low film-forming resin functionality, low cross-linking density of the coating film, and strong polar small-molecule solvents tend to penetrate into the coating, causing the coating to swell, soften, bubbling, and cracking. Damaged storage tanks, especially glass fiber reinforced plastic lined storage tanks, often swell and fall off in about 5 years, causing pollution to the storage tanks. [0004] The construction of inorganic zinc-rich primer has strict requirements on humidity and film thickness, and improper process control can easily lead to fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/04C09D183/08C09D5/08C09D5/24
CPCC09D163/04C09D183/08C09D5/08C09D5/24C08L2201/04C08K2003/2272C08L83/08C08K13/04C08K3/041C08K3/34C08K3/22C08K7/00C08K3/40C08L63/04
Inventor 周伟建周政戴海雄卞直兵马庆磊
Owner IANGSU JINLING SPECIAL PAINT CO LTD