CN102199012A

CN102199012A - Self-migration rust inhibitor and its preparation method

Info

Publication number: CN102199012A
Application number: CN 201010130369
Authority: CN
Inventors: 韦静; 苏新国; 鲍传富; 马友成
Original assignee: BEIJING XINQIAO TECHNOLOGY DEVELOPMENT Ltd
Current assignee: BEIJING XINQIAO TECHNOLOGY DEVELOPMENT Ltd
Priority date: 2010-03-23
Filing date: 2010-03-23
Publication date: 2011-09-28

Abstract

The invention relates to a self-migration rust inhibitor and its preparation method. The self-migration rust inhibitor, which is a novel rust inhibitor product developed by the inventor, has very strong penetration and migration capability, can migrate from the surface layer of asphalt concretes to the surface of steel bars inside cement concretes, and has remarkable rust-resistant effect. The main components of the self-migration rust inhibitor are sodium molybdate, diethylenetriamine and the like. The rust inhibitor for steel bars has no adverse impact on concrete properties, has high-efficient steel bar rust-resistant performance, and can be widely applied in new reinforced concrete structures of sea port engineering, coastal buildings, civil buildings and the like. By the usage of the self-migration rust inhibitor, the service life of steel bars can be substantially raised, the maintenance period of roads and bridges can be prolonged, and the engineering cost can be reduced.

Description

From migration rust inhibitor and preparation method thereof

Affiliated technical field

The present invention relates to a kind of rust inhibitor material and preparation method thereof that moves certainly, the rust inhibitor of making of this kind technology of migration certainly has the gentle corruption effect of the rust of reinforcing bar resistance preferably.

Background technology

Since new China sets up, 30 years since the reform and opening-up particularly, the economic construction of China has obtained significant progress, has obtained significant achievements highly visible.Under the drive of economic construction, road construction of China and highway bridge construction have all obtained corresponding fast development.The highway of China total kilometrage that is open to traffic has only 8.07 ten thousand kilometers during foundation, and by 2008, the highway in China total kilometrage that is open to traffic has reached 3,580,000 kilometers, and wherein the total kilometrage that is open to traffic of motorway has just reached 6.03 ten thousand kilometers, and the motorway total kilometrage occupies the second place of the world.Meanwhile, the construction of highway in China bridge is also maked rapid progress, and to the end of the year 2008, the highway bridge number of China has reached about 500,000, seat surplus the bridge of the building that goes into operation every year is about 10,000, and the technology of building bridge has reached advanced international standard.

Highway is the major path of the national economic development, and The coast is clear not only all plays crucial effects to the individual and even to entire society.In case the generation traffic jam, its harm and dangerous apparent.This not only influences normal life of people and safety, even development and national economy is produced and then had influence in influence.At the beginning of 2008 1 the middle ten days to 2 month, Anhui Province recurs 5 the whole province's property snowfalls, is the snow disaster that the time length is the longest since the establishment of the nation, accumulated snow is the darkest, scope is maximum, the condition of a disaster is the heaviest.Long-time accumulated snow, freezing traffic to Anhui Province, electric power, communication, industrial and agricultural production and people's life bring and have a strong impact on.So, in order to eliminate the accumulated snow accumulated ice apace, guaranteeing the unimpeded and safety of road, highway administration department in Anhui Province's uses more than 20,000 ton of salt or chloride salt Snow Agent snow-removing and ice-thawing on the bridge of road surface.Several ten thousand tons salt scatters on motorway, arterial highway, and after the melting of ice and snow, salt has damaged original state of the art of road surface, bridge greatly.According to investigations, more than 150 kilometer at a high speed of Xu Bei only closed in Anhui Province, about 55 tons with regard to salting, mainly concentrates on 11 bridges, 31 jackshafts.

Show that according to up-to-date test result every cubic metre of phreatic salts contg surpasses 200 milligrams, will work the mischief to farm crop and environment.Experiment showed, that was not done the viaduct that anti-villaumite is handled, after through the villaumite snow melt, the life-span can shorten over half.The frequent salt that uses can reduce the bridge predicted life.

From above-mentioned situation, though the use of salt can the transport solution problem as can be seen, its side effect that brings also is can not be uncared-for, especially to the erosion damage of highway bridge works, not only influence the performance of its function, and strengthened the input of later stage maintenance fund.For this reason at the behaviour in service of highway bridge works, working out a kind of material can administer the salt damage problem of highway bridge under the harmless prerequisite of highway bridge and prevent, take effectively " salt damage " safeguard procedures before arriving in the winter time, avoid or alleviate salt using the consequence of bringing, have important practical significance.

In recent years, some rust inhibitors had been developed abroad.As the patent No. of U.S. Cortec company application is No. 067511, No. 242069 and application number; and EP957071 number of Switzerland Sequa Corp application etc.; they can be after removing the bloated destructive concrete cover of rust; directly apply with the reinforcing bar that exposes on and expose on every side on the old concrete surface, directly handle the steel bar corrosion problem.

Summary of the invention

Provided by the invention from migration resistance rust material, its main component is Sodium orthomolybdate, diethylenetriamine etc.The reinforcing bar rust inhibitor does not have any negative impact to concrete character, and has reinforcing bar anticorrosion performance efficiently, can be widely used in harbour engineering, coastal building, covil construction etc. and newly mix skeleton construction.Can improve the work-ing life of reinforcing bar greatly, prolong the maintenance cycle of highway bridge, and save construction costs.A kind of ideal is counted by weight from moving the rust inhibitor material, comprises that following component mixes through reaction:

100 parts in water

Sodium orthomolybdate 0.01-2.5 part

Diethylenetriamine 3.5-12 part

Propenyl thiocarbamide 0.1-5.5 part

1,4-butynediol 0.1-2 part

The invention has the advantages that and have better penetrating power and suppress the effect that muriate pollutes Rust of Rebar in Concrete, the more important thing is, product of the present invention can see through brea bed and directly be penetrated into rebar surface, depth of penetration is up to 15cm, to the bridge structure thing of bituminous concrete wearing course, need not to cut brea bed can punish bridge.And construction technology is simple, fast, is low-cost, high efficiency resistance rust product.

Embodiment 1:

1 part of Sodium orthomolybdate

4 parts of diethylenetriamines

3 parts of propenyl thiocarbamides

1,0.6 part of 4-butynediol

Embodiment 2:

2 parts of Sodium orthomolybdates

6 parts of diethylenetriamines

5 parts of propenyl thiocarbamides

1,1 part of 4-butynediol

Embodiment 3:

0.8 part of Sodium orthomolybdate

8 parts of diethylenetriamines

5 parts of propenyl thiocarbamides

1,1.5 parts of 4-butynediol

Step:

(1) above-mentioned product is fetched, thin up, stirring, and fully reaction is stand-by.

(2) account for active principle that 2% of binder total amount adds or with 1kg/m ², spray use at body structure surface.

Reinforcing bar rust inhibitor uniform corrosion immersion test result in the table neutral environment

Numbering	Average corrosion rate (mm/a)	Resistance rust efficient (%)
			0%Cl-rust inhibitor 1 solution (1～No. 3 sample)	0.0541	13.12
In 0%Cl-rust inhibitor 2 solution (4～No. 6 samples)	-0.0272	143.62

In liquid rust inhibitor 3 solution of 0%Cl-(7～No. 9 samples)	-0.0499	180.09
			In 0.12%Cl-rust inhibitor 1 solution (10～No. 12 samples)	0.0558	10.38
In 0.12%Cl-rust inhibitor 2 solution (13～No. 15 samples)	-0.162	360.52
			In liquid rust inhibitor 3 solution of 0.12%Cl-(16～No. 18 samples)	-0.00585	109.39
In 1%Cl-rust inhibitor 1 solution (19～No. 21 samples)	0.0682	2.3
			In 1%Cl-rust inhibitor 2 solution (22～No. 24 samples)	0.042	32.6
In liquid rust inhibitor 3 solution of 1%Cl-(25～No. 27 samples)	0.0351	43.62
			In 3.5%Cl-rust inhibitor 1 solution (28～No. 30 samples)	0.0502	19.45
In 3.5%Cl-rust inhibitor 2 solution (31～No. 33 samples)	0.0443	28.88
			In liquid rust inhibitor 3 solution of 3.5%Cl-(34～No. 36 samples)	0.0462	25.74
In 0.06%Cl-rust inhibitor 1 solution (37～No. 39 samples)	0.0633	-1.6
			In 0.06%Cl-rust inhibitor 2 solution (40～No. 42 samples)	-0.0776	112.46
In liquid rust inhibitor 3 solution of 0.06%Cl-(43～No. 45 samples)	-0.0823	113.21

Claims

1. one kind is characterized in that superpower infiltration migration ability from moving rust inhibitor; can above brea bed, directly migrate to the rebar surface the cement concrete; reinforcing bar is protected, bridge and the building of using played the effect that effective corrosion mitigation damages and increases the service life.

2. according to the material described in the claim 1, meter comprises that following component mixes through reaction: 100 parts in water, Sodium orthomolybdate 0.01-2.5 part, diethylenetriamine 3.5-12 part, propenyl thiocarbamide 0.1-5.5 part, 1,4-butynediol 0.1-2 part by weight.

3. a method for preparing material described in the claim 1 to 2 in described ratio, after the accurate weighing of raw material, joins in the agitator successively, adds water and is stirred to and evenly promptly gets this rust inhibitor.