CN1012075B - Preservative oil for metal surfaces and method - Google Patents

Abstract

The present invention relates to a rust prevention component for a metal surface, which is composed of at least one widely known substance for protecting the metal surface from being corroded and one jojoba oil compound, wherein the amount of the jojoba oil compound is enough to form a basal body for intercepting and keeping the protection substance on the metal surface. The present invention also comprises a method for protecting the metal surface from being corroded by using the components.

Description

Preservative oil for metal surfaces and method

Corrosion of metal is that environment passes through chemistry or electrochemical process to the catastrophic explosion that metal rose, and wherein modal a kind of corrosion is by atmospheric component, as oxygen, causes with the reaction of metal.Getting rusty is exactly example of this corrosive.

Except oxygen, many pollutents are arranged in the atmosphere, as ozone, nitrogen oxide, nitric acid, sulfurous gas, sulfuric acid, carbonic acid, hydrochloric acid, tar acid or the like, these compounds make the metallic surface dissolving and form concave point one by one.

In general, relative humidity is bigger, and extent of corrosion is bigger.Metal is as under water, as is immersed in the seawater then corrosion rapidly.

Prevent that these class corrosive means from comprising paint, electroplate or using the anticorrosive metallizing, is used for protection against corrosion purpose anticorrosive as industrial chromic salt commonly used and some the zn cpds.Yet concerning many metallic surfaces, the permanent or semipermanent coating of japanning or other form is impossible, for example, and in the situation of the internal surface of oil engine.In such example; usually prevent corrosion with the lubricating oil that contains general oxidation and rust inhibitor; for the engine that resembles automobile or flyer; generally like this can satisfy; the use of these engines is well-regulated; be to use every day or used several times in every month at least, and if these engines are on the shelf for a long time, these inhibitor are invalid for the protection of the internal surface of these engines in general.

The situation that this shortage is used is for farming device, mower, and blade gas blower, snow scraper, to cover belt snowmobile, outboard motor, push away stand-by engine and the no equipment of many these long storage of military locomotive put be very typical.Although used the slushing oil that contains known corrosion inhibitor commonly used, it is very serious so that become and can not use that the inner metal surfaces of these engines still is corroded and can becomes.This is because rush-resisting material can evaporate or run off, and particularly can or run off from the evaporation of vertical surface.

The means that overcome this class etching problem comprise that a well-regulated maintenance scheme of starting and moving these engines is applied by rust-preventive agent to keep the engine internal surface as possible.This process is not only expensive, and is impossible in many cases.In military storehouse or automobile making factory, this is a truth, there is much more so locomotives and (or) engine keeps stopped status for a long time.In addition, so once in a while always fire an engine that security deposit's metal surface can fully be applied to prevent corrosion damage by rust-preventive agent.

Existing rust protection liquid for the metallic surface of other type of using these rust protection liquids too to no effect.

In order to overcome the problems referred to above, the invention provides the slushing oil that on the metallic surface, can strengthen delay.

Briefly; the invention provides a kind of antirust composition that is used for the metallic surface; it comprises at least aly knownly can play the effect of protective money metal surface and make uncorroded material and a kind of simmondsia oil cpd, and the amount of simmondsia oil cpd is enough to form a kind of matrix to hold back and to keep said at least a protection material on said metallic surface.

As following pointed, the present invention comprises that also a said constituent of usefulness prevents the method for corrosion.

Key of the present invention and main component are a kind of simmondsia oil cpds.As used herein, " a kind of simmondsia oil cpd " this term refers to simmondsia oil, because it is that partially or completely hydrogenation obtains from simmondsia (Simmodsia Chinensis).

The specific simmondsia oil type of compounds and the concentration that are used for this constituent depend on the purposes that is arranged.As, for the protective money metal surface is not subjected to seawater eroding can be with a kind of semi-solid state or solid-state simmondsia oil of being hydrogenated to.For the oil engine that during long storage, needs protection, can have partially hydrogenated simmondsia oil viscosity or the syrupy shape consistence with a kind of.In case engine starts, so a kind of oil can flow rapidly and can promptly remove from engine when needed subsequently.

The hydrogenation of simmondsia oil can be carried out with the common processing method that generally is used for simmondsia oil or other oils, and its degree of hydrogenation can be dependent on the state that these products are used in preparation as discussed above: solid-state, semi-solid state or the like and changing.

Make the complete hydrogenation of simmondsia oil better, so just generated a kind of firmly, add that then a certain amount of simmondsia oil just can form a kind of adulterant with desired viscosity as cured material.

Another main component of this constituent is the mixture of a kind of known corrosion inhibitor or this class corrosion inhibitor.Commodity rut preventives for example, as Whitfield's ointment zinc salt, zinc dialkyl dithiophosphate, sodium sulfonate, calcium sulphonate, or the like.If this antirust thing itself is a kind of liquid, then a kind of simmondsia oil can mix into simply.The amount that requires anticorrosive material to add can provide the anticorrosive activity of longest term, and the those skilled in the art in this field can very fast this consumption of decision.Equally, used amount obviously is decided by to act on the severity of the environmental factors on the metal, and for example: metal exposed is in seawater, and used amount is bigger, and metal is when just standing the arid desert condition, and then used amount is just less.

Yet most convenient it seems still that with a kind of industrial lubricant as carrier, it gets up a kind of simmondsia oil and antirust material fusion.Particularly, all the more so when needs apply its internal surface for oil engine.The used lubricating oil that refers in particular to is generally to protect usefulness as engine.Therefore, for motor car engine, available SAE (SAE) 10W is to the lubricating oil of 10W-40; For wheel gearing, with the lubricating oil of SAE80W-90 to 85W-140; For turbine, be a kind of lubricating oil of about 5.0 to 9.9 centistokes with the viscosity that has at 100 ℃; For reciprocating type aircraft engine, with No. 80 to No. 120 lubricating oil.These examples with regard to can explanation problem because can obtain suitable data from the manufacturers there very soon about the optimal lubricating oil that is used for any specified engine.There meets the oils as engine oil of military technique specification, MIL-L21260 technical specification oil in addition.

Anticorrosive activity for the metallic surface except the oil engine internal surface; the mixture of a kind of simmondsia oil cpd and antirust material can come usefulness like this, promptly only according to the position of this protected metallic surface and the amount that shape decides this simmondsia oil cpd.For the surface expose the effect be subjected to corrosive liquid such as seawater and (or) this surface trends towards vertical situation, obviously the most handy simmondsia oil cpd than solid state with prevent it and run off and (or) evaporation.

Known ratio anticorrosive or protective substance and simmondsia oil cpd can in very large range change according to specific protected metallic surface.For the surface that is exposed in the salt solution, the most handy high-load protective substance, and when low humidity was just stood in protected surface, used protective substance content can be much lower.In general, the amount of simmondsia oil cpd is only required and can be formed a kind of matrix to hold back this protective substance and to make it and the metallic surface is kept in touch on the metallic surface.Simmondsia oil cpd and corrosion inhibitor thorough mixing so that corrosion inhibitor is dispersed in the whole constituent and it is trapped within the simmondsia oil cpd.This trapped substance is exactly a kind of matrix of indication here.

In general, the said composition of per 100 parts of weight just can form an effective matrix with about 5 parts of simmondsia oil cpds to 10 parts of weight.Obviously, this protection component is not needed with pump delivery and hope the such purposes of the harder protective coating of one deck is arranged, the simmondsia oil compound concentrations can improve greatly, reaches 50 parts to 90 parts weight until its content.

The adding quantity of anticorrosive material (one or more) can be according to specific protected metal, and the permanence of storage period and similar factor in very large range change.

When this active constituent will mix with application with a kind of carrier, as mixing with a kind of lubricated oil phase, with when it being joined oil system and making it come more easily internal surface with an oil engine of its coating by engine with pump, the amount of the active constituent of adding can be calculated behind the area that has determined engine to be applied very soon.

From said system, this method of protective money metal surface is conspicuous.For inner metal surfaces,, utilize a kind of industrial lubricating oil can be by making it to realize by engine with pump as the application of the antirust composition of carrier as the engine internal surface.For other surface or the surface that exposes, the application of this antirust composition can be by being dipped in this metal wherein, or this constituent is sprayed on the metal, or this constituent brushed on the surface realize.

To further describe the present invention in conjunction with following embodiment.The setting of embodiment only is for illustrative purposes.

Embodiment 1

Prepare the soft steel sample of a series of polishings.Use the rust-proof oil that conforms with the military technology specification for one group, the MIL-L21260 oil that contains zinc salicylate applies and the same a kind of oily coating of the 100% hydrogenant simmondsia oil that contains 7% weight of another group.By being immersed in, sample realizes coating in the corresponding coating liquid.

Then, all samples was placed 24 hours in being heated to 100 synthetic sea water, stirred seawater simultaneously.

Check sample after 24 hours.Only the sample that applies with MIL-L21260 oil has the metallic surface heavy corrosion more than 60%.Sample with simmondsia oil and the coating of MIL-L21260 oil composition thing does not demonstrate corrosion.

Embodiment 2

The moist chamber method of stipulating in 5321 methods according to FTMS791 is coated the paraffin-based oil that contains 85% weight on the SAE1010 mild steel plate, the constituent of the hydrogenant simmondsia oil cpd of 10% weight and the zinc salicylate of 5% weight and calcium salicylate mixture.

After handling for five weeks with this quadrat method, the check steel plate is not found not get rusty.

Embodiment 3

A series of mild steel plate samples are exposed to San Antonio (San Antonio), and outdoor condition is following 30 days around the Texas.In that time, the temperature on daytime every day is at least 90 °F, want cool evening certainly, and these plates is exposed to be exposed to the sun and rain.

One group of plate is painted a kind of MIL-L21260 oil that contains zinc salicylate, second group of plate painted the constituent of the simmondsia oil cpd behind the hydrogenation of a kind of same MIL-L21260 oil that contains 90% weight and 5% weight, and the denseness of that constituent of back is equivalent to a kind of very light consistency of grease.

The plate that only is coated with MIL-L21260 oil began to get rusty in four days, and the plate that has been coated with same oil and this simmondsia oil cpd does not show after exposing 30 days yet and gets rusty.

Above with one preferably embodiment the present invention is described, and this is not will be restricted to scope of the present invention to go in the specific setting form, on the contrary, be to comprise as limited by the subordinate authority comprise within the spirit and scope of the present invention some changes, improve and equivalent.

Claims (5)

1, a kind of antirust composition that is used for the metallic surface contains in the constituent with per 100 parts of weight, the hydrogenation simmondsia oil of about 5 to 90 weight parts and corresponding 95 to 10 weight parts, at least a protective money metal surface be not subjected to the material of corrosive nature.

2,, contain a kind of lubricating oil as carrier as the said antirust composition of claim 1.

3, as claim 1 or 2 said antirust compositions, wherein said hydrogenant simmondsia oil is a kind of complete hydrogenant simmondsia oil.

4, the uncorroded application of a kind of protective money metal surface comprises being coated on the said surface as claim 1 or the 2 said constituents amount with enough coatings.

5; as the uncorroded application of the said protective money metal surface of claim 4; it comprises and is coated to claim 1 or 2 said constituents common with on the oil engine surface of lubricating oil with the amount of enough coatings; wherein; with pump a kind of basically by a kind of lubricating oil that accords with said engine standard; this constituent is assigned to whole engine oil oiling system, the viscosity of said constituent just in time makes it can contain the 5 parts of said simmondsia oils to 10 parts of weight of having an appointment with pump delivery and in this constituent of per 100 parts of weight to the constituent that a kind of hydrogenant simmondsia oil and a kind of corrosion inhibitor are formed through said engine.