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Solvent-free epoxy coating for steel sheet pile in seaport wharf and manufacture method

A technology of epoxy coating and manufacturing method, applied in epoxy resin coating, coating and other directions, can solve the problems affecting the safe use of port and wharf, collapse and damage of steel structure, local corrosion, etc., and achieve excellent constructability and storage stability , The effect of increasing leveling and fast curing speed

Active Publication Date: 2011-01-12
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The facing surface is in contact with seawater, and the corrosion is more serious. The average corrosion rate in the underwater area can reach about 0.3mm / a, and the local corrosion rate can reach as high as 1mm / a, often causing serious local corrosion or even perforation, and even truncation in severe cases. , leading to the collapse and damage of the steel structure, which seriously affects the safe use of the port wharf with a long designed service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Process for the manufacture of solvent-free epoxy coatings for steel sheet piles in seaport piers. In a stainless steel bucket, 0.07 parts of modified polyacrylate solution containing pigment affinity groups, 0.015 parts of fluorine-modified acrylate copolymer, 0.008 parts of The foam-breaking polymer and polysiloxane mixture, 0.03 parts of ether-modified silicone solution, and 0.05 parts of polymethacrylate solution are heated and controlled at 25 ° C, mixed and stirred at high speed. Add 0.025 parts of fumed silica, 0.25 parts of rutile titanium dioxide, 0.002 parts of carbon black, 0.2 parts of talcum powder, 0.3 parts of sericite powder, stir at high speed for 0.25h and grind 0.5 parts with a sand mill h to make liquid A in the coating; add 0.01 part of polyolefin wax to 1 part by weight of Mannich alkali curing agent, stir at a high speed, and mix uniformly to make liquid B in the coating. Liquid A and 0.25 parts by weight of liquid B are uniformly mixed to prepar...

Embodiment 2

[0019] In 1 part of bisphenol A epoxy resin, add 0.01 part of modified polyacrylate solution containing pigment affinity group, 0.005 part of fluorine-modified acrylate copolymer, and 0.005 part of foam-breaking polymer in parts by weight. and polysiloxane mixture, 0.005 parts of ether-modified silicone solution, and 0.01 part of polymethacrylate solution, heat them, control the temperature at 25 ° C, mix them, stir at high speed, and add 0.01 parts under stirring 1 part of fumed silica powder, 0.1 part of rutile titanium dioxide, 0.002 part of carbon black, 0.1 part of talc powder, 0.1 part of sericite powder, stirred at high speed for 0.25 hours, and then ground for 0.5 to 1 hour with a sand mill Liquid A and liquid B in the paint are Mannich alkali curing agents, and when used, 1 weight part of liquid A and 0.1 weight part of liquid B are mixed uniformly to prepare a solvent-free epoxy coating for steel sheet piles at seaports and wharves.

[0020] Table 1 shows the test re...

Embodiment 3

[0022] Add 0.15 parts of modified polyacrylate solution containing pigment affinity groups, 0.03 parts of fluorine-modified acrylate copolymer, and 0.01 part of foam-breaking polymer in 1 part of bisphenol A epoxy resin by weight. And polysiloxane mixture, 0.05 parts of ether-modified silicone solution, 0.07 parts of polymethacrylate solution, heat them, control the temperature at 25 ° C, mix them, stir at high speed, and add 0.05 parts under stirring 1 part of fumed silica powder, 0.5 part of rutile titanium dioxide, 0.01 part of carbon black, 0.3 part of talc powder, and 0.5 part of sericite powder, stirred at high speed for 0.25 hours and then ground for 0.5 to 1 hour with a sand mill Liquid A in the coating; add 0.015 parts of polyolefin wax in 1 part of Mannich base curing agent by weight, stir at high speed, mix evenly to make liquid B in the coating, and use 1 part of A in the coating Liquid and 0.3 parts by weight of liquid B are uniformly mixed to prepare a solvent-fr...

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PUM

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Abstract

The invention relates to a solvent-free epoxy coating for a steel sheet pile in a seaport wharf and a manufacture method. Liquid (A) is prepared from the following components in parts by weight: 1 part of bisphenol A epoxy resin, 0.01-0.15 part of modified poly-acrylate solution containing a paint affinity base, 0.005-0.03 part of fluorine-modified acrylate copolymer, 0.005-0.01 part of mixture of a foam-breaking polymer and polysiloxane, 0.005-0.05 part of ether-modified organic silicone solution, 0.01-0.07 part of polymethacrylate solution, 0.1-0.5 part of rutile-form titanium dioxide powder, 0.002-0.01 part of carbon black, 0.1-0.3 part of talcum powder, 0.1-0.5 part of sericite powder and 0.01-0.05 part of gas-phase silicon dioxide, and liquid (B) is prepared from the following components in parts by weight: 1 part of mannich base curing agent and 0-0.015 part of polyolefin wax, reaches the salt mist resistance over 5000 h and has good adhesion to a substrate.

Description

technical field [0001] The invention relates to a solvent-free epoxy coating for seaport wharf steel sheet piles with excellent corrosion resistance, especially excellent salt spray resistance, which can reach more than 5000 hours, and good adhesion with substrates. method. Background technique [0002] The existing steel sheet piles have a poor anti-corrosion function of the surface coating and a short service life. The back sea side of the steel sheet pile of the harbor wharf is in a buried environment. In the coastal high-saline soil environment, the steel sheet pile has an obvious tendency to corrode. The facing surface is in contact with seawater, and the corrosion is more serious. The average corrosion rate in the underwater area can reach about 0.3mm / a, and the local corrosion rate can reach as high as 1mm / a, often causing serious local corrosion or even perforation, and even truncation in severe cases. , leading to the collapse and damage of the steel structure, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D7/12
Inventor 解蓓蓓韩文礼黄桂柏邵怀启林竹张盈盈
Owner BC P INC CHINA NAT PETROLEUM CORP
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