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Perfluoropolyether lubricating grease for high temperature and low volatilizing performance and preparation method

A technology of perfluoropolyether and perfluoropolyether oil, which can be used in lubricating compositions, petroleum industry, base materials, etc., and can solve the problems of many additives and complicated processes.

Pending Publication Date: 2017-11-07
东莞市欧迪斯润滑剂科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, the process is complex and there are many basic additives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Mix 20% polytetrafluoroethylene (PTFE) and 80% perfluoropolyether oil (PFPE) and stir evenly. After baking at high temperature for 2 hours, perform three-roll milling 3-4 times, and record the test data . As shown in Table 1

[0017] Table 1 is the detection performance index recorded in Example 1

[0018] project

[0019] Test results: Experiments show that 80% perfluoropolyether oil (PFPE) can be thickened with 20% polytetrafluoroethylene (PTFE) to achieve low volatility under high temperature and high pressure conditions.

Embodiment 2

[0021] Mix 25% polytetrafluoroethylene (PTFE) and 75% perfluoropolyether oil (PFPE) and stir evenly. After baking at high temperature for 2 hours, carry out three-roll milling 3-4 times, and record the test data .

[0022] As shown in Table 2

[0023] Table 2 is the detection performance index recorded in Example 2

[0024] project

[0025] Experiments show that 75% perfluoropolyether oil (PFPE) and 25% polytetrafluoroethylene (PTFE) can be thickened to achieve low volatility under high temperature and high pressure conditions.

Embodiment 3

[0027] Mix 30% polytetrafluoroethylene (PTFE) and 70% perfluoropolyether oil (PFPE) and stir evenly. After baking at high temperature for 2 hours, perform three-roll milling 3-4 times, and record the test data .

[0028] As shown in Table 3

[0029] Table 3 is the detection performance index recorded in Example 3

[0030] project

[0031] Experiments show that the thickening of 70% perfluoropolyether oil (PFPE) and 30% polytetrafluoroethylene (PTFE) can fully achieve low volatility under high temperature and high pressure conditions.

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PUM

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Abstract

The invention provides perfluoropolyether lubricating grease for high temperature and low volatilizing performance and a preparation method. The perfluoropolyether lubricating grease for high temperature and low volatilizing performance is prepared from polytetrafluoroethylene and polyethe oil. The invention further provides a preparation method of the perfluoropolyether lubricating grease for the high temperature and low volatilizing performance. The method comprises the following steps that 1, 20-35% of polytetrafluoroethylene and 65-80% of polyethe oil are prepared for use by mass; 2, the prepared materials are added into a reaction still to be slowly and uniformly stirred, and the stirring speed is 150-300 r / 30-60s; 3, the temperature is increased to 150-180 DEG C for baking for 2h, and cooling and steam removal are performed; 4, after the third step is performed, a three-roller machine is performed for grinding for 3-4 times, and the perfluoropolyether lubricating grease is obtained. The perfluoropolyether lubricating grease is simple in element and simple in technology, and the perfluoropolyether lubricating grease overcomes the defect that the volatile quantity of equipment is large under the high temperature and high vacuum condition.

Description

Technical field [0001] The invention relates to a perfluoropolyether grease, in particular to a perfluoropolyether grease used for high temperature and low volatility and a preparation method. Background technique [0002] Perfluoropolyether grease is a white perfluoropolyether grease made from polytetrafluoroethylene (PTFE) thickened highly chemically stable perfluoropolyether oil (PFPE) and added with special anti-corrosion additives. This fluorine high temperature grease is specially used for bearings in high temperature, high load, chemically corrosive environment and parts requiring life-long lubrication. It has excellent chemical inertness, durability and low volatility, applicable temperature range: -50~+280℃ . Suitable for lubrication of film stretch stenter bearings, heat setting machine conveyor belt bearings, high-temperature paint oven chain bearings, PTA centrifuge differential bearings, automobile wiper motor bearings, corrugated paper machine bearings; suitable f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M107/38C10N50/10C10N30/08
CPCC10M107/38C10M2213/0606C10M2213/0626C10N2030/08C10N2050/10
Inventor 丘长木
Owner 东莞市欧迪斯润滑剂科技有限公司
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