CN105296055A - Sealing paste - Google Patents
Sealing paste Download PDFInfo
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- CN105296055A CN105296055A CN201510825336.6A CN201510825336A CN105296055A CN 105296055 A CN105296055 A CN 105296055A CN 201510825336 A CN201510825336 A CN 201510825336A CN 105296055 A CN105296055 A CN 105296055A
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Abstract
The invention discloses a sealing paste, and belongs to the technical field of chemical engineering in order to solve the problem of influence of unable formation of a thick and stable oil film due to poor adhesiveness of present sealing pastes on the sealing performance of devices. The sealing paste comprises a common grease and a copper-based composite powder material uniformly dispersed in the common grease, a mass ratio of the copper-based composite powder material to the common grease is 0.5-20:100, and the particle size of the copper-based composite powder material does not exceed 30[mu]m. The sealing paste can greatly improve the adhesion performance of the sealing paste on the working surface of a machine to form a thick and stable oil film in order to improve the sealing performance.
Description
This application claims the right of priority that the Chinese Patent Application No. submitted on November 25th, 2014 is 2014106901783 and 2014106917103.
Technical field
The invention belongs to chemical technology field, relate to adhesion sealing material, specifically, is a kind of sealing compound that can be used in sealing machine equipment space.
Background technology
Sealing compound is can the crosslinked polysulfide sealing compound of self-vulcanizing under the formulated normal temperature of base-material with liquid polysulphide rubber, to the material such as metal and concrete, there is good cementability continuous flexible, under vibration and high temperature, keep good resistance to air loss and water-repellancy, and oil resistant, solvent resistant, weather resistance are excellent.
Because sealing compound includes the lubricating grease of semi-solid state, therefore it has the following advantages compared to the sealing oil tool primarily of lubricating oil: 1, can under static state keep its original form, unlikely gravitate and automatically running off, kinestate is not subject to centrifugal action at present and gets rid of leakage; 2, the adsorptive power on metallic surface is more much bigger than sealing oil, and can form the oil film of comparatively robust, bears higher working load; 3, for the working part that complicated structure, accuracy requirement are higher, sealing compound can prevent dust from entering working-surface, avoids impurity to be mixed into wearing and tearing mechanical component, plays sealing process; For the machinery that wearing and tearing roughness ratio is larger, sealing compound not only plays sealing process, also plays lubrication simultaneously.
With engine, cylinder and piston, piston ring and annular groove and all there is certain interval between valve and valve seating, can ensure like this can not clamping stagnation between each kinematic pair.But these gaps can cause cylinder pressurization ratio bad, the situations such as combustion chamber gas leakage, thus reduce cylinder pressure and engine output.The sealing membrane that sealing compound is formed in these gaps, ensure that the stopping property of cylinder, keeps cylinder pressure and engine output, and waste gas can be stoped to scurry into crankcase downwards.
But sealing compound of the prior art mainly comprises with organosilicon (silicone, polysiloxane), urethane, the poly-principal item such as sulphur, sulfonated polyethylene, its performance sticked on mechanical surface is strong not enough, and oil film thickness cannot seal large gap.
Summary of the invention
The adhesion property existed for sealing compound in prior art is poor, thicker, comparatively to stablize the larger gap of oil film seal problem cannot be formed, the invention provides one and can improve sealing compound adhesion property, increase oil film forming thickness and adhesion stability, thus the sealing compound of lift-off seal performance.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is as follows:
A kind of sealing compound, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat, the mass ratio of described copper based composite powder material and common lubricant fat is 0.5 ~ 20:100, and the particle diameter of copper based composite powder material is no more than 30 μm.
Preferably, the mass ratio of described copper based composite powder material and common lubricant fat is 2 ~ 10:100.
Preferably, the mass ratio of described copper based composite powder material and common lubricant fat is 5:100.
Preferably, the particle diameter of described copper based composite powder material is 0.01 ~ 10 μm.
Preferably, the particle diameter of described copper based composite powder material is 0.01 ~ 5 μm.
Preferably, described copper based composite powder material be copper, the oxide compound of copper, organise in copper powder or copper-bearing alloy powder one or more.
Preferably, described copper based composite powder material is one or more in copper powder in submicro, copper nanoparticle, technical grade copper powder, cupric oxide or Red copper oxide.
The present invention compared to existing technology, has following beneficial effect:
1, the molecule that copper based composite powder material is formed in lubricating grease has very large specific surface area and stable adhesion property, a large amount of oil molecules can be adsorbed, coat sealing compound between kinematic pair space after, it can be filled space and adhere to and form thicker, more stable oil lamella, thus improve its resistance to air loss and water-repellancy, realize static sealing.When kinematic pair works, because copper based composite powder material stably can stick to movement pair surface, this ensures the dynamic adhesion stopping property of sealing compound.
2, the molecule that copper based composite powder material is formed in lubricating grease can fill up metal asperity face, realizes the automatic reparation of abrading section, can reduce movement clearance equally, improves and adheres to stopping property.
Embodiment
In order to make those skilled in the art, the present invention may be better understood, further illustrates below to technical solution of the present invention.
General lubricating grease is mainly made up of base oil, viscosifying agent, additive three part, is in base oil, with the addition of the material that some can play densification, liquid is become semi-solid product.
Base oil accounts for about 65% 98% in lubricating grease, is the dispersion medium of viscosifying agent.The selection of base oil directly has influence on the oilness of lubricating grease, vapo(u)rability, low temperature properties and the consistency etc. with sealing material.
Viscosifying agent accounts for about 2% 35% in lubricating grease, is generally be dispersed in liquid lubricant with colloidal state to form space net structure, or is only dispersed in base oil with the form of disperse phase, plays the effect of absorption and the flowing of restriction base oil.The selection of viscosifying agent directly affects the performance such as mechanical stability, high thermal resistance, colloid stability, water resisting property of lubricating grease.
Additive accounts for about 0 10% in lubricating grease, can improve some use properties of lubricating grease.According to the performance requriements of lubricating grease, structure activator, oxidation inhibitor, metal passivator, rust-preventive agent, extreme pressure agent, oiliness improver, anti-wear agent, wire drawing agent etc. can be added.
The invention provides a kind of sealing compound, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat.Described common lubricant fat is general lubricating grease well known to those skilled in the art or the semisolid oil smectic product at least with dynamic/static sealing performance.
Copper based composite powder material can reduce adsorption effect very little, affect sealing property, due to common lubricant fat originally semi-solid state high viscosity product, what therefore copper based composite powder material should not add is too many, therefore the mass ratio of copper based composite powder material and common lubricant fat is 0.5 ~ 20:100, preferably 2 ~ 10:100, more elects 5:100 as.
The particle diameter of copper based composite powder material is crossed conference and is reduced specific surface area, and affect adsorption effect, reduce sealing property, therefore the particle diameter of copper based composite powder material is for being no more than 30 μm, is preferably 0.01 ~ 10 μm, is more preferably 0.01 ~ 5 μm.
It should be noted that, copper based composite powder material can be the Cu-base composites of powdering, also can be through stirring dispersion after the Cu-base composites of non-powder adds common lubricant fat.
In the present invention, described copper based composite powder material be preferably copper, copper oxide compound, organise in copper powder or copper-bearing alloy powder one or more, be more preferably one or more in copper powder in submicro, copper nanoparticle, technical grade copper powder, cupric oxide or Red copper oxide, be more preferably copper powder in submicro.The source of the application to described copper based composite powder material does not have special restriction, adopts the commercial goods of above-mentioned copper based composite powder material well known to those skilled in the art.
Below in conjunction with embodiment, sealing compound provided by the invention and performance thereof are described in detail, but they can not be interpreted as limiting the scope of the present invention.
Embodiment 1:
A kind of sealing compound, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat, the mass ratio of described copper based composite powder material and conventional grease is 2.5:100, and the particle diameter of copper based composite powder material is 0.01 ~ 20 μm.
Embodiment 2:
A kind of sealing compound, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat, the mass ratio of described copper based composite powder material and conventional grease is 1:100, and the particle diameter of copper based composite powder material is 0.01 ~ 1 μm.
Embodiment 3:
A kind of sealing compound, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat, the mass ratio of described copper based composite powder material and conventional grease is 4:100, and the particle diameter of copper based composite powder material is 0.01 ~ 0.6 μm.
Embodiment 4:
A kind of sealing compound, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat, the mass ratio of described copper based composite powder material and conventional grease is 12:100, and the particle diameter of copper based composite powder material is 0.01 ~ 15 μm.
Embodiment 5:
A kind of sealing compound, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat, the mass ratio of described copper based composite powder material and common lubricant fat is 9:100, and the particle diameter of copper based composite powder material is 0.01 ~ 4 μm.
Embodiment 6:
A kind of sealing compound, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat, the mass ratio of described copper based composite powder material and common lubricant fat is 6:100, and the particle diameter of copper based composite powder material is 0.01 ~ 12 μm.
Embodiment 7:
Table 1 is three kinds of dissimilar lubricating grease oil film thickness data under not being added with copper based composite powder material and with the addition of copper based composite powder material on same generator rotor shaft.
Table 1:
| Lubricating grease type | Copper based composite powder material | Resistance to compression bar under water before interpolation | Resistance to compression bar under water after interpolation |
| Mineral type | Copper powder in submicro | 8.873 | 9.98 |
| Synthesis type | Copper powder in submicro | 8.659 | 9.851 |
| Plant type | Copper powder in submicro+cupric oxide | 9.210 | 9.680 |
| Synthesis type | Cupric oxide | 8.952 | 9.654 |
| Synthesis type | Organise copper powder | 9.120 | 9.546 |
As can be seen from the above table, after adding the sealing compound that the present invention obtains, its under water compressive sealed ability significantly increase.
Above a kind of sealing compound provided by the invention is described in detail.The explanation of specific embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (7)
1. a sealing compound, it is characterized in that, comprise common lubricant fat and be dispersed in the copper based composite powder material in described common lubricant fat, the mass ratio of described copper based composite powder material and common lubricant fat is 0.5 ~ 20:100, and the particle diameter of copper based composite powder material is no more than 30 μm.
2. sealing compound according to claim 1, is characterized in that, the mass ratio of described copper based composite powder material and common lubricant fat is 2 ~ 10:100.
3. sealing compound according to claim 2, is characterized in that, the mass ratio of described copper based composite powder material and common lubricant fat is 5:100.
4. sealing compound according to claim 1, is characterized in that, the particle diameter of described copper based composite powder material is 0.01 ~ 10 μm.
5. sealing compound according to claim 4, is characterized in that, the particle diameter of described copper based composite powder material is 0.01 ~ 5 μm.
6. sealing compound according to claim 1, is characterized in that, described copper based composite powder material is copper, the oxide compound of copper, organise in copper powder or copper-bearing alloy powder one or more.
7. sealing compound according to claim 6, is characterized in that, described copper based composite powder material be copper powder in submicro, copper nanoparticle, technical grade copper powder, cupric oxide or oxygen cuprous in one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510825336.6A CN105296055A (en) | 2014-11-25 | 2015-11-24 | Sealing paste |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014106901783 | 2014-11-25 | ||
| CN2014106917103 | 2014-11-25 | ||
| CN201410690178.3A CN104449952A (en) | 2014-11-25 | 2014-11-25 | Copper-based generator sealing oil |
| CN201410691710.3A CN104403720A (en) | 2014-11-25 | 2014-11-25 | Method for improving sealing performance of sealing oil |
| CN201510825336.6A CN105296055A (en) | 2014-11-25 | 2015-11-24 | Sealing paste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105296055A true CN105296055A (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510825336.6A Pending CN105296055A (en) | 2014-11-25 | 2015-11-24 | Sealing paste |
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| Country | Link |
|---|---|
| CN (1) | CN105296055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240549A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | The method of equipment and sealing grease pouring valve with grease pouring valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153236A (en) * | 2006-09-29 | 2008-04-02 | 中国石油化工股份有限公司 | Water-resistant oleosol and method of producing the same |
| CN101250460A (en) * | 2007-04-06 | 2008-08-27 | 昆山密友实业有限公司 | Nano metal self-restoring lubricating oil for mechanical sealing element and preparation method thereof |
-
2015
- 2015-11-24 CN CN201510825336.6A patent/CN105296055A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153236A (en) * | 2006-09-29 | 2008-04-02 | 中国石油化工股份有限公司 | Water-resistant oleosol and method of producing the same |
| CN101250460A (en) * | 2007-04-06 | 2008-08-27 | 昆山密友实业有限公司 | Nano metal self-restoring lubricating oil for mechanical sealing element and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240549A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | The method of equipment and sealing grease pouring valve with grease pouring valve |
| CN108240549B (en) * | 2016-12-26 | 2023-09-26 | 中国石油天然气股份有限公司 | Device with a grease injection valve and method for sealing a grease injection valve |
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