CN101531858A

CN101531858A - Ocean engineering concrete anti-corrosive paint

Info

Publication number: CN101531858A
Application number: CN200910064673A
Authority: CN
Inventors: 庞顺强; 徐飞鹏
Original assignee: Luoyang Qiwei Anti-Corrosion Engineering Material Co Ltd
Current assignee: Luoyang Shuangrui Corrosion Prevention Engineering Technology Co., Ltd.
Priority date: 2009-04-17
Filing date: 2009-04-17
Publication date: 2009-09-16
Anticipated expiration: 2029-04-17
Also published as: CN101531858B

Abstract

The invention belongs to the technical field of anti-corrosive paint and provides an ocean engineering concrete anti-corrosive paint which comprises the components with the proportion as follows: 10%-15% of elastic epoxy resin, 20%-30% of E51 epoxy resin, 2%-5% of reactive diluents, 25%-30% of anti-corrosive pigment, 10%-15% of filling, 0.5%-1.0% of additive and 20%-30% of curing agent. The paint has the effects as follows: the content of solid is high and can be more than 98 percent; the paint has environmental friendliness; the paint without solvent avoids the problem that solvent of solvent type paint volatilizes during drying and causes air holes; the paint without the solvent has better resistance to chloride ion permeability; the thickness of the paint can be 500microns just by painting a layer; the paint can satisfy the requirement of the ocean engineering concrete paint protection design just by painting once, thereby reducing the construction cost and saving constructing time; and the paint has good ductility, ensures the integrality of a coating in service and realizes the long acting property of anticorrosion.

Description

A kind of ocean engineering concrete anti-corrosive paint

Technical field

The invention belongs to the protective system technical field, relate generally to a kind of ocean engineering concrete anti-corrosive paint.

Background technology

The chlorion etch causes the problem that steel bar corrosion causes the ocean engineering concrete structure durability to descend under the ocean environment, has caused the great attention of oceanographic engineering circle.Current, the effective ways that improve Steel Concrete weather resistance under the ocean environment have, and adopt methods such as high performance concrete, gunning concrete supercoat, coated reinforcement, and wherein, concrete paint is anticorrosion to be the economical and effective method that generally adopts.China has clearly stipulated the anticorrosion with coat requirement of concrete structure in the design of port and pier, bridge spanning the sea.

Concrete paint is anticorrosion can not use steel structure anti-corrosion paint.The characteristics of concrete structure are, the one, and vesicular structure, the 2nd, in use microfracture can appear.General coating uses on concrete, bubbling can occur, and crack on concrete causes coating cracking, and then causes corrosion protection coating to lose efficacy.

At present, do not see publication on the concrete protective coatings.On Chinese market, main solvent-type acrylic coating, chlorinated rubber coating and the polyurethane coal asphalt coating of using of concrete sheath coat protection.These coating are the thin thickness of construction together, needs the multiple tracks construction, and adhesive force of coatings, resistance of chloride ion penetration are poor, and elongation is low, can not satisfy the long-effective corrosion requirement of maritime concrete.

The U.S. heavy anticorrosion company of excellent dragon produces the snappiness epoxy coating, and it is anticorrosion also to be applied to prevention of marine concrete structures, but does not find the data of relevant invention.

Summary of the invention

The objective of the invention is to propose a kind of ocean engineering concrete anti-corrosive paint.

Technical scheme proposed by the invention is: each component and the proportioning of ocean engineering concrete anti-corrosive paint of the present invention are as follows:

Elastic epoxy resin 10%～15%

E51 Resins, epoxy 20%～30%

Reactive thinner 2～5%

Anti-corrosion paint 25～30%

Filler 10～15%

Auxiliary agent 0.5～1.0%

Solidifying agent 20%～30%

In order to solve that the anticorrosion floating coat of concrete paint is easily followed concrete cracking and the coating protection Problem of Failure that causes, the present invention selects the elastic epoxy grease coating material.On the one hand, well-known, the bonding force of epoxy coating is the strongest in synthetic resins, on the other hand, uses elastic epoxy resin, has improved the tracing ability of coating to concrete cracking, has improved the protection life-span of coating greatly.

Elastic epoxy resin among the present invention must possess following characteristic: can enough aliphatic amides, phenolic aldehyde amine, cashew nut shell phenol epoxy hardener react curing under normal temperature condition, itself and above-mentioned solidifying agent reaction product elongation greater than 100%.These elastic epoxy resins can be a kind of or combinations among GF-630, EP810, the NO.1-694.

Reactive thinner among the present invention can be one or more combinations in n-butyl glycidyl ether, glycidyl allyl ether, the phenyl glycidyl ether.

Anti-corrosion paint among the present invention can be a kind of or combination in iron mica, the glass flake.Filler can be a kind of or combination of talcum powder, silicon powder, mica powder.

Auxiliary agent among the present invention comprises wetting dispersing agent and thixotropic agent, and wherein, wetting dispersing agent can be a kind of among AT-203, the BYK-415, and thixotropic agent can be a kind of among aerosil, the BYK-405.

Solidifying agent among the present invention is a kind of in modified fatty amine 593#, phenolic aldehyde amine T31, the cashew nut shell phenol epoxy hardener.

Coating of the present invention with solidifying agent as a component independently, all the other components after mixing, disperseing as a component.Prepare in proportion during application, spray with high pressure airless spray equipment.Because of the difference of the resin that uses, solidifying agent kind, consumption, the proportioning difference of two components, concrete ratio can account for overall ratio by solidifying agent and calculate, as, solidifying agent is 20%, two component ratio 4:1.

Adopt technique scheme, coating of the present invention has following effect:

1) solids content height can reach more than 98%, has environment friendly;

2) solventless coatings has been avoided the solvent based coating pore that solvent evaporates causes in drying, and resistance of chloride ion penetration can be better;

3) application can reach 500 micron thickness together, and an application can be satisfied the design requirements of maritime concrete coating protection, reduces construction cost, saves the engineering time;

4) good ductility has guaranteed the coating integrity of floating coat under arms, has realized that rot-resistant is long-lasting.

The key technical indexes such as the table 1 of coating of the present invention.

Table 1 coating the key technical indexes

Project	Index
Project	Index	Solid content, %	≥98
Flow	500 μ m are sagging not	Solid content, %	≥98
Flow	500 μ m are sagging not	Sticking power, MPa	≥10
Unit elongation, %	≥40	Sticking power, MPa	≥10
Unit elongation, %	≥40	Behind the alkali resistance test 30d	Non-foaming, do not chap, do not shell
Resistance of chloride ion penetration, mg/cm ²·d	≤3.0×10 ^-3	Behind the alkali resistance test 30d	Non-foaming, do not chap, do not shell

Embodiment.

Embodiment 1:(component and mass percent)

The first component

Elastic epoxy resin GF-630 10%

E51 Resins, epoxy 30%

N-butyl glycidyl ether 2%

Iron mica 27.5%

Talcum powder 10%

Aerosil 0.4%

AT-203 0.1％

Component B

Phenolic aldehyde amine T31 20%

First component: component B=4:1

Embodiment 2:(component and mass percent)

The first component

Elastic epoxy resin EP810 15%

E51 Resins, epoxy 20%

N-butyl glycidyl ether 3%

Glass flake 25%

Mica powder 11%

Aerosil 0.8%

AT-203 0.2％

Component B

Cashew nut shell phenol epoxy hardener 25%

First component: component B=3:1

Embodiment 3:

The first component

Elastic epoxy resin EP810 13%

E51 Resins, epoxy 23%

Glycidyl allyl ether 3%

Iron mica 30%

Silicon powder 10%

BYK-405 0.8％

BYK-415 0.2％

Component B

Cashew nut shell phenol epoxy hardener 20%

First component: component B=4:1

Embodiment 4:

The first component

Elastic epoxy resin NO.1-694 12%

E51 Resins, epoxy 28%

Phenyl glycidyl ether 5%

Iron mica 25%

Silicon powder 15%

Aerosil 0.8%

BYK-415 0.2％

Component B

Modified fatty amine 593# 30%

First component: component B=7:3

Claims

1, a kind of ocean engineering concrete anti-corrosive paint, each component and the proportioning of described ocean engineering concrete anti-corrosive paint are as follows:

Elastic epoxy resin 10%～15%

E51 Resins, epoxy 20%～30%

Reactive thinner 2～5%

Anti-corrosion paint 25～30%

Filler 10～15%

Auxiliary agent 0.5～1.0%

Solidifying agent 20%～30%

Wherein,

Described elastic epoxy resin must possess following characteristic: can enough aliphatic amides, phenolic aldehyde amine, cashew nut shell phenol epoxy hardener react curing under normal temperature condition, itself and above-mentioned solidifying agent reaction product elongation greater than 100%; Described elastic epoxy resin is a kind of or combination among GF-630, EP810, the NO.1-694;

Described reactive thinner is one or more combinations in n-butyl glycidyl ether, glycidyl allyl ether, the phenyl glycidyl ether;

Described anti-corrosion paint is a kind of or combination in iron mica, the glass flake;

Described filler can be a kind of or combination of talcum powder, silicon powder, mica powder;

Described auxiliary agent comprises wetting dispersing agent and thixotropic agent, and wherein, wetting dispersing agent is a kind of among AT-203, the BYK-415, and thixotropic agent is a kind of among aerosil, the BYK-405;

Described solidifying agent is a kind of in modified fatty amine 593#, phenolic aldehyde amine T31, the cashew nut shell phenol epoxy hardener.