Oleamide-containing compound lubricant for organic-inorganic composite material and preparation method thereof

Abstract

The invention relates to the technical field of lubricants, and particularly discloses an oleamide-containing compound lubricant for organic and inorganic composite materials and a preparation method. The lubricant is mainly prepared from the following raw materials in parts by weight: 60-70 parts of stearic acid, 10-20 parts of glyceryl tristearate, 4-6 parts of pentaerythritol stearate, 7-9 parts of oleamide compounds, 3-5 parts of calcium stearate and 2-4 parts of an antioxidant. The oleamide compound is prepared from diethylenetriamine, oleic acid and 3-trimethoxy silane propyl acrylate. Through mutual cooperation of the raw materials, the lubricant has the characteristics of good lubricating effect, excellent dispersibility and high compatibility, is suitable for organic and inorganic composite materials, and meets market requirements.

Description

Technical Field

[0001] This application relates to the technical field of lubricants. More specifically, it relates to a lubricant containing oleic acid amide compounds for organic-inorganic composite materials and a preparation method thereof. Background Art

[0002] With the rapid development of the domestic economy, organic-inorganic composite materials have been widely used in many fields such as aviation, aerospace, electronics, automotive, and construction due to their excellent mechanical properties, chemical stability, flexibility, processability, etc. Organic-inorganic composite materials usually consist mainly of organic materials and inorganic materials, and additives such as antioxidants and lubricants are added to obtain organic-inorganic composite materials. As one of the important common additives in organic-inorganic composite materials, the main function of the lubricant is to endow the organic-inorganic composite materials with lubricity, increase fluidity, reduce friction, improve the extrusion amount and the smoothness of the extrusion surface, and reduce surface defects on the extrusion surface. For the lubricants of the prior art, their raw materials are mainly stearic acid, glyceryl tristearate, and pentaerythritol stearate. When applied to organic-inorganic composite materials, the extrusion amount is about 33 g / min, that is, the lubrication effect of the lubricant is average and needs to be further improved. Summary of the Invention

[0003] In order to improve the lubrication effect of the lubricant in organic-inorganic composite materials, this application provides a lubricant containing oleic acid amide compounds for organic-inorganic composite materials and a preparation method thereof.

[0004] In the first aspect, this application provides a lubricant containing oleic acid amide compounds for organic-inorganic composite materials, adopting the following technical solution: A lubricant containing oleic acid amide compounds for organic-inorganic composite materials is mainly made from the following raw materials in parts by weight: 60 - 70 parts of stearic acid, 10 - 20 parts of glyceryl tristearate, 4 - 6 parts of pentaerythritol stearate, 7 - 9 parts of oleic acid amide compounds, 3 - 5 parts of calcium stearate, and 2 - 4 parts of antioxidant; the oleic acid amide compounds are prepared from diethylenetriamine, oleic acid, and 3-(trimethoxysilyl)propyl acrylate.

[0005] The lubricant containing oleic acid amide compounds for organic-inorganic composite materials of this application, through the mutual cooperation of the raw materials, when applied to organic-inorganic composite materials, can effectively improve compatibility, increase the lubrication effect, reduce friction, lower the adhesion performance, enhance the extrusion amount of the organic-inorganic composite materials and the smoothness of the extrusion surface, the extrusion amount > 45 g / min, the smoothness of the extrusion surface is excellent, reduce surface defects such as pinholes and sand holes on the surface, and moreover, it does not affect the tensile strength of the organic-inorganic composite materials. The lubricant has the advantages of good lubrication effect, good dispersibility, and high compatibility, meeting the market demand.

[0006] The oleic acid amide compound of the present application is prepared by using diethylenetriamine, oleic acid, and 3-(trimethoxysilyl)propyl acrylate. First, diethylenetriamine and oleic acid react to obtain an intermediate, and then the intermediate and 3-(trimethoxysilyl)propyl acrylate react to obtain the oleic acid amide compound. The oleic acid amide compound contains an amide group, a tertiary amine group, an ester group, and a siloxy group. Through the interaction of each group, its compatibility with the organic-inorganic composite material is increased, so that the lubricant is uniformly dispersed in the organic-inorganic composite material, and the extrusion amount and the extrusion surface smoothness of the finished organic-inorganic composite are improved, the influence on the tensile strength is reduced, and the use effect of the lubricant is improved.

[0007] Optionally, the lubricant is mainly made of the following raw materials in parts by weight: 65 parts of stearic acid, 15 parts of glyceryl tristearate, 5 parts of pentaerythritol stearate, 8 parts of the oleic acid amide compound, 4 parts of calcium stearate, and 3 parts of antioxidant.

[0008] By adopting the above technical solution, the raw material ratio of the lubricant is optimized, the use effect of the lubricant in the organic-inorganic composite material is improved, and the extrusion amount and the extrusion surface smoothness of the organic-inorganic composite material are increased.

[0009] Optionally, the oleic acid amide compound is prepared by the following method: Under continuous stirring, diethylenetriamine and oleic acid are mixed, heated to 160 - 170 °C, kept warm for 1 - 3 h, cooled to 3 - 7 °C, 3-(trimethoxysilyl)propyl acrylate is added, heated to 50 - 60 °C, kept warm for 1 - 3 h, and then subjected to vacuum distillation to obtain the oleic acid amide compound.

[0010] Optionally, the weight ratio of diethylenetriamine, oleic acid, and 3-(trimethoxysilyl)propyl acrylate is (90 - 110):(17 - 19):(35 - 45).

[0011] By adopting the above technical solution, two amino groups in diethylenetriamine react with the carboxyl group in oleic acid to obtain an intermediate, and the intermediate contains two amide groups and a secondary amine group. Then 3-(trimethoxysilyl)propyl acrylate is added, and the carbon-carbon double bond therein reacts with the secondary amine group to obtain the oleic acid amide compound, and a tertiary amine group, an ester group, and a siloxy group are introduced. The preparation method of the present application is not only convenient for the preparation of the oleic acid amide compound, but also convenient for controlling the reaction rate, ensuring the stability and use effect of the oleic acid amide compound.

[0012] Optionally, in the preparation method of the oleic acid amide compound, the addition method of 3-(trimethoxysilyl)propyl acrylate is dropwise addition, and 3-(trimethoxysilyl)propyl acrylate is added dropwise within 20 - 40 min.

[0013] By adopting the above technical solution, 3-trimethoxysilylpropyl acrylate is added dropwise, which increases the uniformity of raw material mixing, ensures sufficient contact between the intermediate and 3-trimethoxysilylpropyl acrylate, and increases the quality and stability of the oleic acid amide compound. In multiple embodiments, 3-trimethoxysilylpropyl acrylate is added dropwise within 30 minutes, and the dropping time can also be set to 20 minutes, 23 minutes, 25 minutes, 28 minutes, 33 minutes, 35 minutes, 38 minutes, 40 minutes as needed, but is not limited to the listed values, and other unlisted values within this value range are equally applicable.

[0014] Optionally, in the preparation method of the oleic acid amide compound, the heating rate for heating to 160 - 170 °C is 2 - 5 °C / min.

[0015] By adopting the above technical solution, the heating rate of heating is limited, so that the raw materials are fully heated, and the uniformity of heat absorption of the raw materials is also increased, reducing the occurrence of local overheating, and ensuring the quality and stability of the oleic acid amide compound. In multiple embodiments, the heating rate for heating to 160 - 170 °C / min is 3 °C / min, and the heating rate can also be set to 1 °C / min, 1.5 °C / min, 2 °C / min, 2.5 °C / min, 3.5 °C / min, 4 °C / min, 4.5 °C / min, 5 °C / min as needed, but is not limited to the listed values, and other unlisted values within this value range are equally applicable.

[0016] Optionally, in the preparation method of the oleic acid amide compound, the cooling rate for cooling to 3 - 7 °C is 2 - 5 °C / min. In multiple embodiments, the cooling rate for cooling to 3 - 7 °C / min is 3 °C / min, and the cooling rate can also be set to 1 °C / min, 1.5 °C / min, 2 °C / min, 2.5 °C / min, 3.5 °C / min, 4 °C / min, 4.5 °C / min, 5 °C / min as needed, but is not limited to the listed values, and other unlisted values within this value range are equally applicable.

[0017] Optionally, in the preparation method of the oleic acid amide compound, the heating rate for heating to 50 - 60 °C is 2 - 5 °C / min.

[0018] By adopting the above technical solutions, the heating rate of the temperature rise is limited, so that the raw materials are heated evenly, the situation of local overheating is reduced, and the quality and stability of the oleic acid amide compound are ensured. In multiple embodiments, the heating rate of rising to 50-60 °C / min is 3 °C / min, and the heating rate can also be set to 1 °C / min, 1.5 °C / min, 2 °C / min, 2.5 °C / min, 3.5 °C / min, 4 °C / min, 4.5 °C / min, 5 °C / min as needed, but it is not limited to the listed values, and other unlisted values within this value range are equally applicable.

[0019] Optionally, the antioxidant is one or more of 2,6-di-tert-butyl-p-cresol, 4,4'-methylenebis(2,6-di-tert-butylphenol), tris(2,4-di-tert-butyl)phenyl phosphite, and pentaerythritol bis(2,4-di-tert-butylphenyl) diphosphite.

[0020] By adopting the above technical solutions, the antioxidant is optimized, which is convenient for the selection of the antioxidant. Moreover, the antioxidant can increase the antioxidant property of the lubricant, reduce the situation of oxidation and deterioration of the lubricant, and increase the storage time of the lubricant.

[0021] Optionally, the antioxidant is 4,4'-methylenebis(2,6-di-tert-butylphenol) and tris(2,4-di-tert-butyl)phenyl phosphite, and the weight ratio of 4,4'-methylenebis(2,6-di-tert-butylphenol) to tris(2,4-di-tert-butyl)phenyl phosphite is (1-3):(1-3).

[0022] By adopting the above technical solutions, the antioxidant is optimized to increase the use effect of the antioxidant. In multiple embodiments, the weight ratio of 4,4'-methylenebis(2,6-di-tert-butylphenol) to tris(2,4-di-tert-butyl)phenyl phosphite is 1:1, and the weight ratio can also be set to 1:2, 1:3, 2:1, 2:3, 3:1, 3:2 as needed, but it is not limited to the listed values, and other unlisted values within this value range are equally applicable.

[0023] In a second aspect, the present application provides a preparation method of a lubricant containing an oleic acid amide compound for an organic-inorganic composite material, adopting the following technical solutions: A preparation method of a lubricant containing an oleic acid amide compound for an organic-inorganic composite material includes the following steps: at a temperature of 90-100 °C, mix stearic acid, glyceryl tristearate, pentaerythritol stearate, an oleic acid amide compound, calcium stearate, and an antioxidant, and cool to room temperature to obtain the lubricant.

[0024] By adopting the above technical solutions, it is convenient for the preparation of the lubricant.

[0025] In summary, the present application has at least the following beneficial effects: 1. For the lubricant containing oleic acid amide compounds for organic-inorganic composite materials of the present application, through the mutual cooperation of raw materials, when it is applied to organic-inorganic composite materials, the extrusion amount and the smoothness of the extrusion surface are increased. The extrusion amount > 45 g / min, and the extrusion surface smoothness is excellent. The surface defects such as pinholes and sand holes on the surface are reduced, and it does not affect the tensile strength. It is beneficial to the dispersion of the lubricant in the organic-inorganic composite material, increases the lubrication effect, reduces friction, and makes the lubricant have the characteristics of good lubrication effect, excellent dispersibility, and high compatibility, meeting the market demand.

[0026] 2. For the preparation method of the oleic acid amide compounds of the present application, diethylenetriamine and oleic acid are reacted to obtain an intermediate, and then 3-(trimethoxysilyl)propyl acrylate is added for reaction to obtain the oleic acid amide compounds. It is not only convenient for the preparation of oleic acid amide compounds, but also convenient for controlling the reaction rate, and makes the oleic acid amide compounds contain amide groups, tertiary amine groups, ester groups, and siloxy groups. By utilizing the interaction between the groups, the extrusion amount and the smoothness of the extrusion surface are increased, the influence of the lubricant on the tensile strength is reduced, and the use effect of the lubricant is improved. Specific Embodiments

[0027] To make the present application easier to understand, the following will further elaborate on the present application in combination with embodiments. These embodiments are only illustrative and are not limited to the application scope of the present application. The raw materials or components used in the present application can be obtained through commercial channels or conventional methods without special instructions.

[0028] Preparation Examples Preparation Example 1 An oleic acid amide compound is prepared by the following method: At a rotation speed of 300 r / min, 18 g of diethylenetriamine is added to 100 g of oleic acid, stirred for 2 min, heated at a heating rate of 3 °C / min to 165 °C, and kept warm for 2 h. Then cooled at a cooling rate of 3 °C / min to 5 °C, and 41 g of 3-(trimethoxysilyl)propyl acrylate is added dropwise. The 3-(trimethoxysilyl)propyl acrylate is added dropwise within 30 min. After the dropwise addition is completed, heated at a heating rate of 3 °C / min to 55 °C and kept warm for 2 h. Then vacuum distillation is carried out to obtain the oleic acid amide compound.

[0029] Preparation Example 2 An oleic acid amide compound is prepared by the following method: At a rotational speed of 300 r / min, 17 g of diethylenetriamine was added to 110 g of oleic acid, and the mixture was stirred for 2 min. Then, at a heating rate of 3 °C / min, the temperature was raised to 160 °C and held for 3 h. At a cooling rate of 3 °C / min, the temperature was lowered to 3 °C, and 35 g of 3-(trimethoxysilyl)propyl acrylate was added dropwise. The addition of 3-(trimethoxysilyl)propyl acrylate was completed within 30 min. After the addition was completed, the temperature was raised to 50 °C at a heating rate of 3 °C / min and held for 3 h. Then, vacuum distillation was carried out to obtain an oleic acid amide compound.

[0030] Preparation Example 3 An oleic acid amide compound is prepared by the following method: At a rotational speed of 300 r / min, 19 g of diethylenetriamine was added to 90 g of oleic acid, and the mixture was stirred for 2 min. Then, at a heating rate of 3 °C / min, the temperature was raised to 170 °C and held for 1 h. At a cooling rate of 3 °C / min, the temperature was lowered to 7 °C, and 45 g of 3-(trimethoxysilyl)propyl acrylate was added dropwise. The addition of 3-(trimethoxysilyl)propyl acrylate was completed within 30 min. After the addition was completed, the temperature was raised to 60 °C at a heating rate of 3 °C / min and held for 1 h. Then, vacuum distillation was carried out to obtain an oleic acid amide compound. Example

[0031] Table 1 Content of each raw material of the lubricant (unit: ×10 g) Examples Example 1 Example 2 Example 3 Stearic acid 65 60 70 Tristearin 15 20 10 Pentaerythritol stearate 5 4 6 Oleic acid amide compounds 8 9 7 Calcium stearate 4 5 3 Antioxidant 3 2 4 Total 100 100 100 Example 1 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the raw materials and their proportioning are shown in Table 1.

[0032] Among them, the antioxidants are 4,4'-methylenebis(2,6-di-tert-butylphenol) and tris(2,4-di-tert-butyl)phenyl phosphite, and the weight ratio of 4,4'-methylenebis(2,6-di-tert-butylphenol) to tris(2,4-di-tert-butyl)phenyl phosphite is 1:1; the oleic acid amide compound is obtained by Preparation Example 1.

[0033] A preparation method of a lubricant containing an oleic acid amide compound for an organic-inorganic composite material, comprising the following steps: at a rotational speed of 300 r / min and a temperature of 90 °C, glyceryl tristearate, pentaerythritol stearate, oleic acid amide compound, calcium stearate powder, and antioxidant were added to stearic acid, and the mixture was stirred for 15 min and then cooled to 23 °C to obtain the lubricant.

[0034] Example 2 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the difference from Example 1 lies in that the raw material ratio of the lubricant is different, and the raw material ratio is shown in Table 1.

[0035] Example 3 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the difference from Example 1 lies in that the raw material ratio of the lubricant is different, and the raw material ratio is shown in Table 1.

[0036] Example 4 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the difference from Example 1 lies in that among the raw materials of the lubricant, the source of the oleic acid amide compound is different, and the oleic acid amide compound is obtained by Preparation Example 2.

[0037] Example 5 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the difference from Example 1 lies in that among the raw materials of the lubricant, the source of the oleic acid amide compound is different, and the oleic acid amide compound is obtained by Preparation Example 3.

[0038] Comparative Example Comparative Example 1 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the difference from Example 1 lies in that among the raw materials of the lubricant, an equal amount of stearic acid is used to replace the oleic acid amide compound.

[0039] Comparative Example 2 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the difference from Example 1 lies in that among the raw materials of the lubricant, an equal amount of oleic acid amide is used to replace the oleic acid amide compound.

[0040] Comparative Example 3 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the difference from Example 1 lies in that in the preparation method of the oleic acid amide compound among the raw materials of the lubricant, an equal amount of oleic acid is used to replace 3-trimethoxysilylpropyl acrylate.

[0041] Comparative Example 4 A lubricant containing an oleic acid amide compound for an organic-inorganic composite material, the difference from Example 1 lies in that in the preparation method of the oleic acid amide compound among the raw materials of the lubricant, an equal amount of 2-hydroxyethyl acrylate is used to replace 3-trimethoxysilylpropyl acrylate.

[0042] Performance Testing Respectively take the lubricants obtained in Examples 1-5 and Comparative Examples 1-4, mix them with the raw materials of the organic-inorganic composite material, and then through melting, extrusion, and granulation to obtain the organic-inorganic composite material. And perform the following performance tests on the organic-inorganic composite material. The test results are shown in Table 2. At the same time, a blank control group is made, and no lubricant is added to the blank control group.

[0043] Among them, the organic-inorganic composite material is made of the following raw materials by weight percentage: 88% polyvinyl chloride, 10% silicon dioxide, 1.5% antioxidant, and 0.5% lubricant. And the average particle size of the silicon dioxide is 1μm; the antioxidant is 4,4'-methylenebis(2,6-di-tert-butylphenol).

[0044] The extrusion surface smoothness of the organic-inorganic composite material is divided into six levels, and the extrusion surface smoothness from high to low is: excellent, good, medium, general, passing, and failing.

[0045] According to GB / T1040.1-2018 "Determination of Tensile Properties of Plastics - Part 1: General Principles", the tensile strength of the organic-inorganic composite material is detected.

[0046] Table 2 Test Results Test items Extrusion rate / (g / min) Extrusion surface smoothness Tensile strength / (MPa) Example 1 46.7 Excellent 45.6 Example 2 46.3 Excellent 45.3 Example 3 45.1 Excellent 45.2 Example 4 46.4 Excellent 45.4 Example 5 45.6 Excellent 45.5 Comparative example 1 33.6 General 43.2 Comparative example 2 38.8 Medium 43.8 Comparative example 3 42.4 Good 44.5 Comparative example 4 40.2 Good 44.2 Blank control group 25.8 Pass 45.1 It can be seen from Table 2 that when the lubricant of the present application is applied to the organic-inorganic composite material, the tensile strength is 45.2 - 45.6 MPa. Compared with the case without adding lubricant, the tensile strength basically does not change, which makes the lubricant and the organic-inorganic material have good compatibility and does not affect the mechanical properties of the organic-inorganic composite material. Moreover, it significantly increases the extrusion amount, and the extrusion amount is 45.1 - 46.7 g / min, and the extrusion surface smoothness is excellent. That is, the lubricant of the present application, when applied to the organic-inorganic composite material, has excellent lubrication effect, compatibility, and dispersibility, showing good use effects.

[0047] Compare Example 1 with Comparative Examples 1-2. In the raw materials of the lubricant in Comparative Example 1, oleamide compounds are not added; in the raw materials of the lubricant in Comparative Example 2, oleamide is added; in the raw materials of the lubricant in Example 1, oleamide compounds are added. It can be seen from this that compared with adding oleamide in the raw materials of the lubricant, adding the oleamide compounds of the present application in the raw materials can effectively increase the extrusion amount, extrusion surface smoothness, and tensile strength, and make the lubricant show better lubrication effect and compatibility.

[0048] Examples 1 and Comparative Examples 3-4 were compared. The oleic acid amide compound of Comparative Example 3 was obtained by using diethylenetriamine and oleic acid; the oleic acid amide compound of Comparative Example 4 was obtained by using diethylenetriamine, oleic acid, and 2-hydroxyethyl acrylate; the oleic acid amide compound of Example 1 was obtained by using diethylenetriamine, oleic acid, and 3-(trimethoxysilyl)propyl acrylate. It can be seen that on the basis of the reaction of diethylenetriamine and oleic acid, further grafting 3-(trimethoxysilyl)propyl acrylate and introducing ester groups and siloxy groups are beneficial to improving the use effect of the lubricant.

[0049] It should be noted that the above-described embodiments are only used to explain the present application and do not constitute any limitation to the present application. The present application has been described by referring to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory words rather than limiting words. Modifications can be made to the present application within the scope of the claims of the present application, and the present invention can be revised without departing from the scope and spirit of the present application. Although the present application described therein relates to specific methods, materials, and embodiments, it does not mean that the present application is limited to the specific examples disclosed therein. On the contrary, the present application can be extended to all other methods and applications having the same function.

Claims

1. An oleic acid amide compound lubricant for organic and inorganic composite materials, characterized in that: The lubricant is mainly made of the following raw materials in parts by weight: 60-70 parts of stearic acid, 10-20 parts of tristearin, 4-6 parts of pentaerythritol stearate, 7-9 parts of oleic acid amide compounds, 3-5 parts of calcium stearate, and 2-4 parts of antioxidants; the oleic acid amide compounds are prepared by using diethylenetriamine, oleic acid, and 3-trimethoxysilane propyl acrylate.

2. The oleic acid amide compound lubricant for organic-inorganic composite materials according to claim 1, characterized in that: The lubricant is mainly made of the following raw materials in parts by weight: 65 parts of stearic acid, 15 parts of tristearin, 5 parts of pentaerythritol stearate, 8 parts of oleamide compounds, 4 parts of calcium stearate and 3 parts of antioxidant.

3. The oleic acid amide compound lubricant for organic-inorganic composite materials according to claim 1, characterized in that: The oleic acid amide compound is prepared by the following method: Under constant stirring, diethylenetriamine and oleic acid are mixed, heated to 160-170°C, kept warm for 1-3 hours, cooled to 3-7°C, 3-trimethoxysilane acrylate is added, heated to 50-60°C, kept warm for 1-3 hours, and distilled under reduced pressure to obtain oleic acid amide compounds.

4. The oleic acid amide compound lubricant for organic-inorganic composite materials according to claim 3, characterized in that: The weight ratio of diethylenetriamine, oleic acid and 3-trimethoxysilane propyl acrylate is (90-110):(17-19):(35-45).

5. The oleic acid amide compound lubricant for organic-inorganic composite materials according to claim 3, characterized in that: In the preparation method of oleic acid amide compounds, 3-trimethoxysilane propyl acrylate is added dropwise, and the addition of 3-trimethoxysilane propyl acrylate is completed within 20-40 minutes.

6. The oleic acid amide compound lubricant for organic-inorganic composite materials according to claim 3, characterized in that: In the preparation method of oleic acid amide compounds, the heating rate to 160-170° C. is 2-5° C. / min.

7. The oleic acid amide compound lubricant for organic-inorganic composite materials according to claim 3, characterized in that: In the preparation method of oleic acid amide compounds, the heating rate to 50-60° C. is 2-5° C. / min.

8. The oleic acid amide compound lubricant for organic-inorganic composite materials according to claim 1, characterized in that: The antioxidant is one or more of 2,6-di-tert-butyl-p-cresol, 4,4'-methylenebis(2,6-di-tert-butylphenol), tris(2,4-di-tert-butyl)phenyl phosphite, and bis(2,4-di-tert-butylphenol)pentaerythritol diphosphite.

9. The oleic acid amide compound lubricant for organic-inorganic composite materials according to claim 1, characterized in that: The antioxidants are 4,4'-methylenebis(2,6-di-tert-butylphenol) and tris(2,4-di-tert-butyl)phenyl phosphite, and the weight ratio of 4,4'-methylenebis(2,6-di-tert-butylphenol) and tris(2,4-di-tert-butyl)phenyl phosphite is (1-3):(1-3).

10. A method for preparing an oleic acid amide compound lubricant for an organic-inorganic composite material as claimed in any one of claims 1 to 9, characterized in that: The steps include: At a temperature of 90-100° C., stearic acid, tristearic glyceryl, pentaerythritol stearate, oleic acid amide compounds, calcium stearate and antioxidants are mixed and cooled to room temperature to obtain a lubricant.