Low-compressive-deformation fluororubber material of high-temperature-resistant lubricating oil and preparation method of low-compressive-deformation fluororubber material

A high-temperature-resistant lubricating oil and fluororubber technology, applied in the field of rubber materials, can solve the problems of seal leakage and low compression set, and achieve the effect of solving seal leakage, low compression set performance and reducing maintenance costs

Active Publication Date: 2015-01-14
宁波精科机械密封件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a high-temperature-resistant lubricating oil-resistant low-pressure variable fluorine rubber material and its preparation method, which solves the problems that the existing fluorine rubber is easily swelled and corroded by high-temperature lubricating oil, causing seal leakage, etc. The service life of the sealing product reduces the maintenance cost caused by frequent replacement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] With the fluorine rubber of 1000g (by mass percent, fluorine content is 67%, Mooney viscosity ML 1+10 45 under the test condition of 121°C) Put it into the internal mixer and knead for 2 minutes, add 40g of high-activity magnesium oxide (iodine value 160), 60g of calcium hydroxide, dispersing flow agent WS28020g after mixing for 3 minutes, add 200g of barium sulfate, chromium oxide Green 50g and then knead for 5min, the discharge temperature is 100°C. Add 20g of bisphenol AF and 5g of benzyl triphenylphosphorus chloride to the open mill, mix evenly, thin pass 10 times with a 0.5mm roll distance, and cool down the lower film with a 4mm roll distance; the film is parked for 24h and then thinly passed on the open mill for 10 times The second time, the lower sheet was cooled with a 4mm roll distance; the process parameters of the first stage of vulcanization were 175°C and 10min; the process parameters of the second stage were 232°C and 16h.

Embodiment 2

[0021] With the fluorine rubber of 1000g (by mass percent, fluorine content is 67%, Mooney viscosity ML 1+10 45 under the test condition of 121°C) put into the internal mixer and knead for 2 minutes, add 50g of high-activity magnesium oxide (iodine value 160), 60g of calcium hydroxide, 25g of carnauba wax and mix for 3 minutes, add 150g of barium sulfate, chromium oxide Green 60g and then knead for 5min, the discharge temperature is 100°C. Add 20g of bisphenol AF and 5g of benzyl triphenylphosphorous chloride on the open mill and mix evenly, thin pass 12 times with a 0.5mm roller distance, and cool down the lower film with a 4mm roller distance; the film is parked for 25h and then thinly passed on the open mill for 12 The second time, the lower sheet was cooled with a 4mm roll distance; the process parameters of the first stage of vulcanization were 175°C and 10min; the process parameters of the second stage were 232°C and 16h.

Embodiment 3

[0023] With the fluorine rubber of 1000g (by mass percent, fluorine content is 67%, Mooney viscosity ML 1+10 50 under the test condition of 121°C) Put it into the internal mixer and knead for 2 minutes, add 55g of high-activity magnesium oxide (iodine value 170), 80g of calcium hydroxide, dispersing flow agent WS28030g after mixing for 3 minutes, add 250g of barium sulfate, chromium oxide Green 65g was mixed for another 5 minutes, and the discharge temperature was 100°C. Add 22.4g of bisphenol AF and 5.6g of benzyl triphenylphosphorous chloride to the open mill, mix evenly, pass 10 times with a 0.5mm roller distance, and cool down the lower film with a 4mm roller distance; the film is parked for 24 hours and thinned again on the open mill. Pass 10 times, 4mm roller distance, and the lower sheet is cooled for use; the process parameters of the first stage of vulcanization are temperature 175°C, and the vulcanization time is 10min; the process parameters of the second stage vulc...

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PUM

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Abstract

The invention discloses a low-compressive-deformation fluororubber material of high-temperature-resistant lubricating oil and a preparation method of the low-compressive-deformation fluororubber material. The low-compressive-deformation fluororubber material comprises the following components in parts by weight: 100 parts of fluororubber, 4-6 parts of magnesium oxide, 3-10 parts of calcium hydroxide, 2-3 parts of a processing auxiliary agent, 15-25 parts of a reinforcing agent, 5-10 parts of a pigment and 2.2-3 parts of a vulcanizing agent. The low-compressive-deformation fluororubber material prepared by using the method disclosed by the invention has excellent resistance and tolerance to mineral oil such as the high-temperature lubricating oil with the temperature of 200 DEG C and hydraulic oil, and also has extremely low compression permanent deformation performance. By adopting the low-compressive-deformation fluororubber material disclosed by the invention, the problems that existing fluororubber is easily subjected to swelling corrosion by the high-temperature lubricating oil to cause sealing leakage and the like can be solved; and meanwhile, because the low-compressive-deformation fluororubber material is extremely low in compression permanent deformation performance, the service life of a sealed product can be greatly prolonged, and the maintenance cost caused by frequent replacement can be reduced.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, and relates to a high-temperature lubricating oil-resistant low-pressure variable fluorine rubber material and a preparation method thereof. Background technique [0002] Gear oil is an important lubricating oil prepared mainly from mineral base oil or synthetic base oil, adding extreme pressure anti-wear agent and oily agent. It is used in various gear transmission devices to prevent tooth surface wear and abrasion , sintering, etc., to prolong its service life, improve the efficiency of power transmission, and reduce power loss. Due to the long-term or high-speed operation of the gear system, the temperature of the lubricating oil gradually increases, resulting in a decrease in the viscosity of the lubricating oil. At the same time, due to the increase in the temperature of the operating system, the sealing performance of the sealing parts of the lubricating oil will also change, such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08K13/02C08K3/22B29C35/02
CPCC08K3/22C08K13/02C08K2003/2206C08K2003/222C08L27/12C08L2201/08C08L2312/00C08L91/06
Inventor 戴志能何斌波
Owner 宁波精科机械密封件制造有限公司
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