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Perfluoropolyether type rubber sealing grease and preparation method thereof

A rubber sealing, perfluoropolyether technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of weak rubber surface adhesion, increase labor costs, human harm and other problems, achieve excellent performance, good compatibility, formula simple effect

Inactive Publication Date: 2018-02-23
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two types of protective agents can protect the rubber surface. However, the protective agent of the spray type often contains a large amount of solvent, which is very volatile when used and causes harm to the human body; Multiple coatings are required, which virtually increases labor costs
[0004] As for the perfluoropolyether sealing grease, due to its molecular structure characteristics, the existing perfluoropolyether sealing grease has the defect that the adhesion to the rubber surface is not strong

Method used

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  • Perfluoropolyether type rubber sealing grease and preparation method thereof
  • Perfluoropolyether type rubber sealing grease and preparation method thereof
  • Perfluoropolyether type rubber sealing grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1) Weigh 55g of branched-chain fluorine-containing base oil (m=16, n=0, R in this embodiment) as shown in formula (I) f1 For—CF 3 , R f2 for-C 2 f 5 ), 45g thickening agent (the thickening agent is Japanese Daikin M112 in the present embodiment), 0.01g additive (its structural formula is shown in formula (Ⅲ), wherein Rf structure is shown in formula (Ⅳ), wherein m =10, n=3) placed in a container with a stirring and vacuuming device, and the container was placed in an oil bath and heated to 80°C;

[0058] 2) Turn on the mechanical stirring, and stir the mixture until it becomes a white ointment for 2 hours to ensure uniform mixing;

[0059] 3) Stop stirring, turn on the vacuuming device, stop vacuuming when there are no bubbles on the surface of the ointment, keep warm at 50°C for 2 hours, and fully thicken;

[0060] 4) Place the mixture in step 3) on a grinding device and grind it repeatedly for 3 times to prepare a perfluoropolyether type rubber sealing grease.

...

Embodiment 2

[0063] 1) Weigh 55g of branched-chain fluorine-containing base oil (m=16, n=0, R in this embodiment) as shown in formula (I) f1 For—CF 3 , R f2 for-C 2 f 5 ) and 45g thickening agent (the thickening agent is Daikin M112 in Japan in this embodiment) are placed in a container with stirring and vacuuming device, and the container is placed in an oil bath and heated to 80°C;

[0064] 2) Turn on the mechanical stirring, and stir the mixture until it becomes a white ointment for 2 hours to ensure uniform mixing;

[0065] 3) Stop stirring, turn on the vacuuming device, stop vacuuming when there are no bubbles on the surface of the ointment, keep warm at 50°C for 2 hours, and fully thicken;

[0066] 4) Place the mixture in step 3) on a grinding device and grind it repeatedly for 3 times to prepare a perfluoropolyether type rubber sealing grease.

[0067] The blended samples were tested for 1 / 4 working cone penetration, water shower resistance, extreme pressure performance, low te...

Embodiment 3

[0069] 1) Weigh 55g of straight-chain fluorine-containing base oil (m=15, n=6, in this embodiment, R f1 For—CF 3 , R f2 for-C 3 f 7 ), 45g thickening agent (the thickening agent is Japanese Daikin M112 in the present embodiment), 0.01g additive (its structural formula is shown in formula (Ⅲ), wherein Rf structure is shown in formula (Ⅳ), wherein m =13, n=5) placed in a container with a stirring and vacuum device, and the container was placed in an oil bath and heated to 80°C;

[0070] 2) Turn on the mechanical stirring, and stir the mixture until it becomes a white ointment for 2 hours to ensure uniform mixing;

[0071] 3) Stop stirring, turn on the vacuuming device, stop vacuuming when there are no bubbles on the surface of the ointment, keep warm at 50°C for 2 hours, and fully thicken;

[0072] 4) Place the mixture in step 3) on a grinding device and grind it repeatedly for 3 times to prepare a perfluoropolyether type rubber sealing grease.

[0073] The blended samples...

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Abstract

The invention provides perfluoropolyether type rubber sealing grease and a preparation method thereof. The perfluoropolyether type rubber sealing grease comprises the following components in percentages by weight: 55-85% of fluorine-containing base oil, 15-45% of a densifier, and 0-2% of an additive. The perfluoropolyether type rubber sealing grease has a simple formula, the product is smeared onthe surface of a rubber piece in order to improve sealing performance of rubber, and the product has good sealing and protecting effects for rubber.

Description

technical field [0001] The invention relates to the field of rubber sealing, in particular to a perfluoropolyether type rubber sealing grease and a preparation method thereof. Background technique [0002] With the rapid development of the vehicle industry, rubber products are widely used in important parts such as door seals and roof windows. However, during molding, long-term storage and use of rubber and rubber products, they are extremely susceptible to the effects of oxygen, ozone, variable-valence metal ions and other chemical substances, resulting in the rubber gradually becoming soft and sticky or hard and brittle, cracked and poor in physical properties. Reduced, that is, the rubber aging phenomenon in the traditional sense. At present, at home and abroad, the anti-aging performance of rubber products is usually improved by adding specific additives in the rubber molding process, and this practice has gradually matured. However, due to the harsh daily operating en...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/06C10N30/12C10N30/08C10N30/10C10N40/34C10N50/10
CPCC10M169/041C10M2213/0606C10M2213/062C10M2217/06C10N2030/06C10N2030/08C10N2030/10C10N2030/12C10N2030/26C10N2030/36C10N2030/56C10N2040/34C10N2050/10C10N2020/02
Inventor 李京亚辛虎徐敬瑞
Owner CHINA PETROLEUM & CHEM CORP