CN113563951A - Lubricating grease for gas stove sealing and preparation method thereof - Google Patents

Abstract

The invention discloses a gas stove sealing lubricating grease and a preparation method thereof, and relates to the technical field of gas stove sealing lubricating grease. The grease is prepared by thickening special synthetic oil with an inorganic thickening agent and adding a special structure improver, a solid lubricant, an antirust agent and an antioxidant; adopting normal-pressure double-planet dispersing equipment, adding synthetic base oil, a hydroxyl structure improver and a cosolvent according to a specified weight ratio, heating to 75-85 ℃ to remove the cosolvent, heating to 150-160 ℃ at most to dissolve the hydroxyl structure improver, preserving heat for 5-10 minutes, cooling to below 100 ℃, adding an inorganic thickening agent, uniformly stirring, adding a solid lubricant, an antioxidant, an antirust agent and the like, taking out of a kettle, grinding and packaging; the invention has good lubrication and sealing performance; the acid and alkali resistance is good, and the equipment is prevented from being corroded; the rubber has good rubber compatibility, and the rubber is prevented from expanding or contracting; the mechanical stability is good, and the service life is long; has good high and low temperature performance, and the use temperature can reach-40 to 200 ℃.

Description

Lubricating grease for gas stove sealing and preparation method thereof

Technical Field

The invention relates to the technical field of gas stove sealing lubricating grease, in particular to lubricating grease for lubricating, sealing and protecting a gas stove and a preparation method thereof.

Background

The industrial segmentation of gas range parts and complete gas range in our country has been completed in approximately 90 years. This is marked by the emergence of manufacturers of key components of a controller (stopcock assembly), burner, pulse igniter and panel light. Through the first 15 years of development in this century, parts have passed through the maturity stage, and the threshold of the maturity stage begins to be stepped, and industrial clusters with large bead triangles and long triangles and respective characteristics are formed.

At present, the popularization of middle-grade and low-grade gas stove products is primarily finished in most areas of China. However, the difference of the distribution of market areas with different grades, such as high grade, medium grade and low grade, and the difference of the sales quantity are also extremely obvious. The component industry belonging to subordinate status is greatly influenced by the industrial pattern of the whole machine.

As the living standard of people is improved, the demand of medium and high-grade products is gradually improved, the pattern of the whole gas stove industry is changed, more markets are brought to the part industry, and the gas plug valve has a larger prospect as one of the parts.

Therefore, a lubricating grease for lubricating, sealing and protecting the gas plug valve is needed.

Disclosure of Invention

Technical problem to be solved

The invention aims to provide a gas stove sealing lubricating grease and a preparation method thereof, aiming at solving the problem of the requirement in the background technology that the lubricating grease for lubricating, sealing and protecting a gas plug valve is prepared by thickening special synthetic oil by an inorganic thickening agent and adding a special structure improver, a solid lubricant, an antirust agent, an antioxidant and the like, and has good lubricating property, sealing property and protecting property.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the lubricating grease for gas stove sealing is prepared with special synthetic oil thickened with inorganic thickener and through adding special structure improver, solid lubricant, antirust agent and antioxidant in the following weight proportion:

synthetic oil: 70-80 parts;

inorganic thickener: 10-15 parts of;

a structure-improving agent: 3-5;

cosolvent: 10-15 parts of;

antioxidant: 1-5;

antirust agent: 0.1-0.5.

As a further improvement of the invention, the synthetic base oil is silicon synthetic oil with the kinematic viscosity of 900-1100mm at 25 DEG C²/s。

As a further improvement of the invention, the inorganic thickener is white amorphous silica gel powder with a BET surface area of 170 +/-30 m 2/g.

As a further improvement of the invention, the structure improver is a hydroxyl silanol product, and the hydroxyl content of the hydroxyl improver is more than or equal to 12.5.

As a further improvement of the invention, the cosolvent refers to an alcohol compound.

As a further development of the invention, the antioxidant is 3, 5-bis (1, 1-dimethylethyl) -4-hydroxy-C7-9 branched alkyl phenylpropionate, liquid octyl, butyldiphenylamine or nonyl-N- (nonylphenyl) aniline, or a mixture thereof.

As a further improvement of the invention, the antirust agent is benzotriazole, imidazoline derivative or N-acyl sarcosine, or a mixture thereof.

As a further improvement of the invention, the solid lubricant is molybdenum disulfide, polytetrafluoroethylene or colloidal graphite, or a mixture thereof.

The invention also discloses a preparation method of the sealing grease for the gas stove, which comprises the following steps:

(1) adopting normal-pressure double-planet dispersing equipment, adding synthetic base oil, a hydroxyl structure improver and a cosolvent according to a specified weight ratio, and heating to 75-85 ℃ to remove the cosolvent;

(2) heating to 150-;

(3) cooling to below 100 deg.C;

(4) adding an inorganic thickening agent and stirring;

(5) after being stirred uniformly, the solid lubricant, the antioxidant and the antirust agent are added, and then the mixture is taken out of the kettle, ground and packaged.

(III) advantageous effects

Compared with the prior art, after the technical scheme is adopted, the invention has the beneficial effects that:

1. has good lubrication and sealing performance: the silicon synthetic oil has good viscosity-temperature performance, and ensures the sealing performance of the lubricating grease.

2. The acid and alkali resistance is good, and the equipment is ensured not to be corroded: the silicon synthetic oil has good acid and alkali resistance, and can ensure the corrosion of C0, methane and the like in the fuel gas.

3. Has good rubber compatibility and prevents rubber from expanding or shrinking: excellent rubber compatibility, and avoids the expansion or contraction of the sealing ring.

4. Has good mechanical stability and long service life: the inorganic thickener is a white amorphous highly dispersed powder. The prepared lubricating grease has unstable structure and poor water resistance when being directly used as a lubricating grease thickening agent, and can obviously improve the mechanical stability, colloid stability, thermal stability and the like of the lubricating grease by adding the hydroxyl silanol structure improver for covering. Since the hydroxystilnol-type improvers are poorly soluble, a certain amount of alcohol compounds needs to be added to dissolve.

5. Has good high and low temperature performance, and the use temperature can reach-40 to 200 ℃.

Drawings

FIG. 1 is a flow chart of the manufacturing process of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

the grease is prepared by thickening special synthetic oil with an inorganic thickening agent and adding a special structure improver, a solid lubricant, an antirust agent and an antioxidant, wherein the weight ratio of each component is as follows:

synthetic oil: 70-80, preferably 80 in the embodiment;

inorganic thickener: 10-15, preferably 10 in the present embodiment;

a structure-improving agent: 3-5, preferably 3 in the embodiment;

cosolvent: 10-15, preferably 10 in the present embodiment;

antioxidant: 1-5, preferably 1.5 in this example;

antirust agent: 0.1-0.5, preferably 0.5 in this embodiment.

The preparation method of the lubricating grease for gas stove sealing comprises the following steps:

adding synthetic base oil, a hydroxyl structure improver and a cosolvent according to a specified weight ratio by adopting normal-pressure double-planet dispersing equipment, heating to 75-85 ℃ to remove the cosolvent, heating to 150-160 ℃ at most to dissolve the hydroxyl structure improver, preserving heat for 5-10 minutes, cooling to below 100 ℃, adding an inorganic thickening agent, uniformly stirring, adding a solid lubricant, an antioxidant, an antirust agent and the like, taking out of a kettle, grinding and packaging.

Example 2:

the grease is prepared by thickening special synthetic oil with an inorganic thickening agent and adding a special structure improver, a solid lubricant, an antirust agent and an antioxidant, wherein the weight ratio of each component is as follows:

synthetic oil: 70-80, preferably 75 in this embodiment;

inorganic thickener: 10-15, preferably 12 in this embodiment;

a structure-improving agent: 3-5, preferably 3.5 in this embodiment;

cosolvent: 10-15, preferably 12.5 in this example;

antioxidant: 1-5, preferably 2.5 in this example;

antirust agent: 0.1-0.5, preferably 0.5 in this embodiment.

The preparation method of the lubricating grease for gas stove sealing comprises the following steps:

adding synthetic base oil, a hydroxyl structure improver and a cosolvent according to a specified weight ratio by adopting normal-pressure double-planet dispersing equipment, heating to 75-85 ℃ to remove the cosolvent, heating to 150-160 ℃ at most to dissolve the hydroxyl structure improver, preserving heat for 5-10 minutes, cooling to below 100 ℃, adding an inorganic thickening agent, uniformly stirring, adding a solid lubricant, an antioxidant, an antirust agent and the like, taking out of a kettle, grinding and packaging.

Example 3:

the grease is prepared by thickening special synthetic oil with an inorganic thickening agent and adding a special structure improver, a solid lubricant, an antirust agent and an antioxidant, wherein the weight ratio of each component is as follows:

synthetic oil: 70-80, preferably 75 in this embodiment;

inorganic thickener: 10-15, preferably 12 in this embodiment;

a structure-improving agent: 3-5, preferably 4 in this embodiment;

cosolvent: 10-15, preferably 12 in this embodiment;

antioxidant: 1-5, preferably 1.5 in this example;

antirust agent: 0.1-0.5, preferably 0.5 in this embodiment.

The preparation method of the lubricating grease for gas stove sealing comprises the following steps:

adding synthetic base oil, a hydroxyl structure improver and a cosolvent according to a specified weight ratio by adopting normal-pressure double-planet dispersing equipment, heating to 75-85 ℃ to remove the cosolvent, heating to 150-160 ℃ at most to dissolve the hydroxyl structure improver, preserving heat for 5-10 minutes, cooling to below 100 ℃, adding an inorganic thickening agent, uniformly stirring, adding a solid lubricant, an antioxidant, an antirust agent and the like, taking out of a kettle, grinding and packaging.

The results of the analysis of the physical and chemical properties of the greases obtained according to examples 1 to 3 are given in the following table:

in conclusion, the gas stove sealing grease disclosed by the invention has good lubrication and sealing properties; the acid and alkali resistance is good, and the equipment is prevented from being corroded; the rubber has good rubber compatibility, and the rubber is prevented from expanding or contracting; the mechanical stability is good, and the service life is long; has good high and low temperature performance, and the use temperature can reach-40 to 200 ℃.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (9)

1. The sealing lubricating grease for the gas stove is characterized by being prepared by thickening special synthetic oil by using an inorganic thickening agent and adding a special structure improver, a solid lubricant, an antirust agent and an antioxidant, wherein the weight ratio of each component is as follows:

synthetic oil: 70-80 parts;

inorganic thickener: 10-15 parts of;

a structure-improving agent: 3-5;

cosolvent: 10-15 parts of;

antioxidant: 1-5;

antirust agent: 0.1-0.5.

2. The gas range sealing grease as claimed in claim 1, wherein the synthetic base oil is a silicon-based synthetic oil having a kinematic viscosity of 900-1100mm at 25 ℃²/s。

3. The gas stove sealing grease as claimed in claim 1, wherein the inorganic thickener is white amorphous silica gel powder with BET surface area of 170 ± 30 m 2/g.

4. The gas stove sealing grease as claimed in claim 1, wherein the structure improver is a product of hydroxysilanol group with a hydroxyl group content of 12.5 or more.

5. The gas stove sealing grease as claimed in claim 1, wherein the co-solvent is an alcohol compound.

6. The gas range sealing grease as claimed in claim 1, wherein the antioxidant is 3, 5-bis (1, 1-dimethylethyl) -4 hydroxy-C7-9 branched alkyl phenylpropionate, liquid octyl, butyldiphenylamine or nonyl-N- (nonylphenyl) aniline, or a mixture thereof.

7. The gas stove sealing grease as claimed in claim 1, wherein the rust inhibitor is benzotriazole, imidazoline derivative or N-acyl sarcosine, or a mixture thereof.

8. The gas stove sealing grease as claimed in claim 1, wherein the solid lubricant is molybdenum disulfide, polytetrafluoroethylene or colloidal graphite, or a mixture thereof.

9. A preparation method of sealing grease for a gas stove is characterized by comprising the following steps:

(1) adopting normal-pressure double-planet dispersing equipment, adding synthetic base oil, a hydroxyl structure improver and a cosolvent according to a specified weight ratio, and heating to 75-85 ℃ to remove the cosolvent;

(2) heating to 150-;

(3) cooling to below 100 deg.C;

(4) adding an inorganic thickening agent and stirring;

(5) after being stirred uniformly, the solid lubricant, the antioxidant and the antirust agent are added, and then the mixture is taken out of the kettle, ground and packaged.

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