Grease special for plastic and preparation method thereof

A grease and plastic technology, applied in the field of plastic grease, can solve the problems of lack of protection and poor high temperature resistance of plastic materials, and achieve the effect of stable colloidal stability and strong high temperature resistance.

Inactive Publication Date: 2010-11-10
福州三辰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soap grease is widely used in various fields due to its good lubricating properties, extreme pressure, anti-wear, waterproof and other advantages, such as bearing lubrication for aircraft, automobiles, machine tools and various mechanical equipment; it is also suitable for va

Method used

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  • Grease special for plastic and preparation method thereof
  • Grease special for plastic and preparation method thereof
  • Grease special for plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1: A special grease for plastics, the preparation steps are as follows:

[0034] 1. Add 40kg of polydimethylsiloxane with a polymerization viscosity of 50mPa.s at 25°C and 10kg of polymethylphenylsiloxane with a polymerization viscosity of 150mPa.s at 25°C into the reactor, and stir evenly.

[0035] 2. Add 1kg polytetrafluoroethylene, 0.5kg 2,6-di-tert-butyl-p-cresol, 0.5kg ethylene glycol, and stir well.

[0036] 3. Add 6kg and the specific surface area is 230m 2 / g The dehydrated hydrophobic silica treated by chlorosilane, stir well.

[0037] 4. Heat the reactor to 140°C and stir for 2 hours to form the base material.

[0038] 5. Grind the base material twice with a three-roll mill to form fat.

[0039] 6. Defoaming the obtained grease, vacuum for 2 hours under the condition of absolute vacuum greater than 0.08MPa, stop the vacuum, and fill the tank.

Example Embodiment

[0040] Example 2: A special grease for plastics, the preparation steps are as follows:

[0041] 1. Add 70kg of polydibutylsiloxane with a polymerization viscosity of 20000mPa.s at 25°C and 40kg of polymethylphenylsiloxane with a polymerization viscosity of 150mPa.s at 25°C into the reactor, and stir well.

[0042] 2. Add 3kg of polytetrafluoroethylene, 1kg of 4,4'-thiobis(3-methyl-6-tert-butyl)phenol, 2kg of polyethylene glycol, and stir well.

[0043] 3. Add 14kg and the specific surface area is 230m 2 / g The dehydrated hydrophobic silica treated by chlorosilane, stir well.

[0044] 4. Heat the reactor to 140°C and stir for 2 hours to form the base material.

[0045] 5. Grind the base material twice with a three-roll mill to form fat.

[0046] 6. Defoaming the grease obtained, vacuuming for 2 hours under the condition of absolute vacuum greater than 0.08MPa, stopping the vacuum, and filling the tank.

Example Embodiment

[0047] Example 3: A special grease for plastics, the preparation steps are as follows:

[0048] 1. Add 40kg of polymethylvinylsiloxane with a polymerization viscosity of 2000mPa.s at 25°C and 40kg of polymethylphenylsiloxane with a polymerization viscosity of 150mPa.s at 25°C into the reactor, and stir well.

[0049] 2. Add 2kg of molybdenum disulfide, 0.75kg of 2,6-di-tert-butyl-p-cresol, and 1kg of glycerin and stir well.

[0050] 3. Add 10kg and the specific surface area is 230m 2 / g The dehydrated hydrophobic white carbon black treated with silazane, stir evenly.

[0051] 4. Heat the reaction kettle to 140°C and stir for 2 hours to form the base material.

[0052] 5. Grind the base material twice with a three-roll mill to form fat.

[0053] 6. Defoaming the obtained grease, vacuum for 2 hours under the condition of absolute vacuum greater than 0.08MPa, stop the vacuum, and fill the tank.

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Abstract

The invention discloses grease special for plastic and a preparation method thereof. The grease comprises the following components: organopolysiloxane, an additive, a heat stabilizer, a colloid stabilizer and a thickener, wherein the additive improves lubrication of dropping points and interfaces. The grease not only has the performance of common grease, but also has the advantages of stable colloid stability, strong high temperature resistance, and a special plastic protective function.

Description

technical field [0001] The invention relates to a non-saponifiable lubricating grease material, in particular to a plastic lubricating grease with a protective effect on plastics. Background technique [0002] With the rapid development of modern industry, most of the mechanical parts have different degrees of friction during operation, such as the rotation of the shaft, the rotation of the gear, etc. In order to reduce the movement resistance and wear of the moving parts, almost all mechanical devices The rotating, sliding and rolling parts of the machine must use lubricating oil or grease. [0003] Grease can be divided into two categories according to the thickener used to prepare the grease: soap grease and non-soap grease. The thickener of soap grease is mainly fatty acid metal salt, including single soap or mixed soap and compound soap; the thickener of non-soap grease includes hydrocarbon, inorganic and organic. [0004] At present, more than 90% of the lubricating ...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10M107/50C10M177/00C10N40/34C10N30/08
Inventor 林鹏远朱学松林杨
Owner 福州三辰新材料有限公司
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