CN104357184A - Lubricating grease material and preparation method thereof - Google Patents

Abstract

The invention discloses a lubricating grease material and a preparation method thereof. The lubricating grease material comprises components in parts by weight as follows: 70-85 parts of base oil, 10-18 parts of low density polyethylene, 3-8 parts of iron oxide nanoparticles, 3-5 parts of triethanolamine salt, 2-5 parts of sodium oleate, 0.5-2 parts of a coupling agent and 0.8-1 part of an antioxidant. The preparation method comprises steps as follows: (1), placing 70-85 parts of the base oil and 10-18 parts of the low density polyethylene into a reaction kettle, and heating the mixture to the temperature of 56-66 DEG C; (2), adding a mixture of 3-8 parts of the iron oxide, 3-5 parts of the triethanolamine salt and 2-5 parts of the sodium oleate to the product in step (1), heating the mixture to the temperature of 80-95 DEG C, then adding 0.5-2 parts of the coupling agent and 0.8-1 part of the antioxidant, stirring and heating the mixture to the temperature of 75-85 DEGC, cooling and adding the mixture to a homogenizer, and performing mixing and degassing to obtain the lubricating grease material.

Description

A kind of lubricating grease material and preparation method thereof

Technical field

The invention belongs to lubricating grease field, particularly a kind of lubricating grease material and preparation method thereof.

Background technology

Lubricating oil is generally not volatile oily lubricant, can be used on all kinds mechanically to reduce friction, protection machinery and the liquid lubricant of workpiece, lubrication, cooling, antirust, clean, seal and the excellent properties such as buffering remarkable.

Chinese patent CN 102947429 A discloses for reducing the lubricating oil composition comprising nanoporous particle rubbed.But because lubricating oil in use exists many defects, when the lubricating oil of workpiece surface stands squeezing action in moving process, often be in boundary lubrication condition between workpiece, not only cause waste but also pollute surrounding enviroment, lubrication and abrasion resistance are affected; Lubricating oil liquid is in addition inconvenient in transport, packaging, storage.

Lubricating grease is semi-fluid and the semi-solid state material with certain viscosity; in lubrication face can anti-fluid or solia particle from leaking between adjacent bonding surface and preventing introduced contaminants such as dust and moisture etc. from invading machinery equipment inside, thus proterctive equipment well runs.

Lubricating grease is used for the lubrication of the mechanical means such as iron and steel, often needs to use lubricating grease in a large number in the junction of each mechanical part.Along with the raising of mechanical efficiency, various mechanical means has all kinds of rough ambient environmental of adaptation gradually, thus while itself mechanical part has good water resistance and erosion resistance, also require the lubricating grease material of its junction to have a water resisting property and while erosion resistance, the weight of steel billet can be born under running up.Soap base grease high temperature, high loading, high speed, have water to drench severe condition under can not keep good lubrication.

Summary of the invention

For above-mentioned demand, the object of this invention is to provide a kind of lubricating grease material and preparation method thereof.

Object of the present invention can be achieved through the following technical solutions:

A kind of lubricating grease material, be made up of the component comprising following weight part:

Base oil 70-85 part,

Low Density Polyethylene 10-18 part,

Ferriferrous oxide nano-particle 3-8 part,

Tri ethanol ammonium salt 3-5 part,

Sodium oleate 2-5 part,

Coupling agent 0.5-2 part,

Oxidation inhibitor 0.8-1 part.

Described base oil is selected from paraffinic based oil or trihydroxymethylpropanyl ester.

The melting index of described Low Density Polyethylene is 6-10g/10min.

The particle diameter of described Z 250 is 10-15 nanometer.

Described coupling agent is vinyltriethoxysilane.

Described oxidation inhibitor is 2,6 ditertiary butyl p cresol.

A preparation method for lubricating grease material, the method comprises the following steps:

(1) base oil 70-85 part and Low Density Polyethylene 10-18 part are dropped in reactor, are heated to 56-66 DEG C;

(2) in the product of step 1, add the mixture of Z 250 3-8 part, tri ethanol ammonium salt 3-5 part and sodium oleate 2-5 part, be warmed up to 80-95 DEG C, then coupling agent 0.5-2 part and oxidation inhibitor 0.8-1 part is added, be heated with stirring to 75-85 DEG C, cooling, add in clarifixator, mixing, degassed, obtain lubricating grease material.

compared with prior art, its beneficial effect is in the present invention:lubricating grease material prepared by the present invention by oleic acid by more stable for ferriferrous oxide nano-particle carry out coated, the lubricating grease material being not only has satisfactory stability, and have very strong abrasion resistant extreme-pressure, grease can not be disperseed under high temperature and high speed state, meet water equal not emulsion deterioration in a long time, achieve better high temperatures, oilness and water resisting property compared to traditional lubricating grease, the lubricating requirement of high temperature, heavy loading mechanical means can be met.

Embodiment

Below in conjunction with embodiment, the present invention is further illustrated.

Embodiment 1

(1) paraffinic based oil 85kg and melting index are in the Low Density Polyethylene 13kg input reactor of 10g/10min, are heated to 56 DEG C;

(2) in the product of step 1, add the mixture of Z 250 3kg that particle diameter is 10 nanometers, tri ethanol ammonium salt 4kg and sodium oleate 2kg, be warmed up to 80 DEG C, then vinyltriethoxysilane 0.5kg and 2 is added, 6-ditertbutylparacresol 1kg, be heated with stirring to 85 DEG C, cooling, adds in clarifixator, mixing, degassed, obtain lubricating grease material.

The performance test results of obtained lubricating grease material is as shown in table 1.

Embodiment 2

(1) trihydroxymethylpropanyl ester 80kg and melting index are in the Low Density Polyethylene 18kg input reactor of 8g/10min, are heated to 56 DEG C;

(2) in the product of step 1, add the mixture of Z 250 8kg that particle diameter is 12 nanometers, tri ethanol ammonium salt 3kg and sodium oleate 5kg, be warmed up to 95 DEG C, then vinyltriethoxysilane 2kg and 2 is added, 6-ditertbutylparacresol 0.8kg, be heated with stirring to 75 DEG C, cooling, adds in clarifixator, mixing, degassed, obtain lubricating grease material.

The performance test results of obtained lubricating grease material is as shown in table 1.

Embodiment 3

(1) trihydroxymethylpropanyl ester 70kg and melting index are in the Low Density Polyethylene 10kg input reactor of 10g/10min, are heated to 66 DEG C;

(2) in the product of step 1, add the mixture of Z 250 5kg that particle diameter is 15 nanometers, tri ethanol ammonium salt 5kg and sodium oleate 3kg, be warmed up to 85 DEG C, then vinyltriethoxysilane 2kg and 2 is added, 6-ditertbutylparacresol 1kg, be heated with stirring to 80 DEG C, cooling, adds in clarifixator, mixing, degassed, obtain lubricating grease material.

The performance test results of obtained lubricating grease material is as shown in table 1.

Embodiment 4

(1) paraffinic based oil 75kg and melting index are in the Low Density Polyethylene 14kg input reactor of 6g/10min, are heated to 60 DEG C;

(2) in the product of step 1, add the mixture of Z 250 4kg that particle diameter is 10 nanometers, tri ethanol ammonium salt 3kg and sodium oleate 2kg, be warmed up to 80 DEG C, then vinyltriethoxysilane 0.5kg and 2 is added, 6-ditertbutylparacresol 0.8kg, be heated with stirring to 85 DEG C, cooling, adds in clarifixator, mixing, degassed, obtain lubricating grease material.

The performance test results of obtained lubricating grease material is as shown in table 1.

Test event	Testing standard	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4
						Extreme pressure property (four ball), PD, N	SH/T0202	412	478	488	402
Abrasion resistance (four ball), mm	SH/T0204	0.22	0.30	0.27	0.26

Table 1.

The invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.

Claims (6)

1. a lubricating grease material, is characterized in that, is made up of the component comprising following weight part:

Base oil 70-85 part,

Low Density Polyethylene 10-18 part,

Ferriferrous oxide nano-particle 3-8 part,

Tri ethanol ammonium salt 3-5 part,

Sodium oleate 2-5 part,

Coupling agent 0.5-2 part,

Oxidation inhibitor 0.8-1 part.

2. lubricating grease material according to claim 1, it is characterized in that, described base oil is selected from paraffinic based oil or trihydroxymethylpropanyl ester.

3. lubricating grease material according to claim 1, it is characterized in that, the melting index of described Low Density Polyethylene is 6-10g/10min; The particle diameter of described Z 250 is 10-15 nanometer.

4. lubricating grease material according to claim 1, it is characterized in that, described coupling agent is vinyltriethoxysilane.

5. lubricating grease material according to claim 1, it is characterized in that, described oxidation inhibitor is 2,6 ditertiary butyl p cresol.

6. a preparation method for lubricating grease material, is characterized in that, the method comprises the following steps:

(1) base oil 70-85 part and Low Density Polyethylene 10-18 part are dropped in reactor, are heated to 56-66 DEG C;

(2) in the product of step 1, add the mixture of Z 250 3-8 part, tri ethanol ammonium salt 3-5 part and sodium oleate 2-5 part, be warmed up to 80-95 DEG C, then coupling agent 0.5-2 part and oxidation inhibitor 0.8-1 part is added, be heated with stirring to 75-85 DEG C, cooling, add in clarifixator, mixing, degassed, obtain lubricating grease material.