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Preparing method of fluororubber/nanofiller composite material

A nano-filler and composite material technology is applied in the preparation of fluororubber/nano-filler composite materials and the field of fluororubber. Effect

Active Publication Date: 2017-02-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method is only suitable for rubber latex, not for block solid rubber

Method used

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  • Preparing method of fluororubber/nanofiller composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In terms of mass percentage, the consumption of each raw material is as follows:

[0035] Viton 95%

[0036] Montmorillonite 2% (montmorillonite: deionized water = 1:20)

[0037] Zinc Oxide 1%

[0038] Triallyl Isocyanurate 1%

[0039] Dicumyl peroxide 1%

[0040] First add montmorillonite to deionized water (the mass ratio of montmorillonite to deionized water is 1:20), mechanically stir for 60min, and the speed is 3000r min -1 , ultrasonic dispersion for 30min, power 1500w, to obtain montmorillonite hydrosol.

[0041] The fluororubber raw rubber was masticated with a rubber internal mixer at a temperature of 50 °C and a rotor speed of 40 r min -1 , masticating for 3min, set the temperature of the rubber internal mixer to 120°C, and the rotor speed to 40r·min -1 , slowly drop the montmorillonite hydrosol for 15 minutes. During this process, a large amount of water vapor appears at the top bolt. After the montmorillonite hydrosol is added, lower the top bolt and con...

Embodiment 2

[0044] In terms of mass percentage, the consumption of each raw material is as follows:

[0045] Viton 88%

[0046] Montmorillonite 2% (montmorillonite: deionized water = 1:20)

[0047] Sodium dodecylbenzenesulfonate (SDBS) 1%

[0048] Zinc Oxide 5%

[0049] Triallyl isocyanurate 3%

[0050] Dicumyl peroxide 1%

[0051] First add montmorillonite to deionized water (the mass ratio of montmorillonite to deionized water is 1:20), then add surfactant sodium dodecylbenzene sulfonate (SDBS), stir mechanically for 60min, and rotate at a speed of 3000r min -1 , ultrasonic dispersion for 30min, power 1500w, to obtain montmorillonite pre-dispersion.

[0052] The fluororubber raw rubber was masticated with a rubber mixer at a temperature of 50 °C and a rotor speed of 40 r min -1 , masticating for 3min, set the temperature of the rubber internal mixer to 120°C, and the rotor speed to 40r·min -1 , slowly drop the montmorillonite pre-dispersion solution for 15 minutes. At this time, ...

Embodiment 3

[0055] In terms of mass percentage, the consumption of each raw material is as follows:

[0056] Viton 88%

[0057] Montmorillonite 2% (montmorillonite: deionized water = 1:20)

[0058] Cetyltrimethylammonium bromide (CTAB) 1%

[0059] Zinc Oxide 5%

[0060] Triallyl isocyanurate 3%

[0061] Dicumyl peroxide 1%

[0062] First add montmorillonite to deionized water (the mass ratio of montmorillonite to deionized water is 1:20), then add surfactant cetyltrimethylammonium bromide (CTAB), mechanically stir for 60min, 3000r·min -1 , ultrasonic dispersion for 30min, power 1500w, to obtain montmorillonite pre-dispersion.

[0063] The fluororubber raw rubber was masticated with a rubber mixer at a temperature of 50 °C and a rotor speed of 40 r min -1 , masticating for 3min, set the temperature of the rubber internal mixer to 120°C, and the rotor speed to 40r·min -1 , slowly drop the montmorillonite pre-dispersion, the dropping time is 15min, a large amount of water vapor appea...

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Abstract

The invention discloses a preparing method of a fluororubber / nanofiller composite material. The method comprises the steps of firstly preparing nanofiller hydrosol or nanofiller pre dispersion liquid; then using a rubber internal mixer to conduct plastify on the fluororubber, raising the temperature of the internal mixer to 120-200 DEG C after plastification, gradually adding the nanofiller hydrosol or the nanofiller water pre dispersion liquid into the rubber internal mixer, mixing, and adopting hot air to dry the material after evaporation of water finishes so as to prepare fluororubber / nanofiller mixture; adding the fluororubber / nanofiller mixture, zinc oxide, triallyl isocyanurate, dicumyl peroxide in a rubber mix mill, mixing evenly, conducting out slice, and stopping putting so as to prepare a fluororubber / nanofiller rubber compound; conducting vulcanization of the fluororubber / nanofiller rubber compound on a press vulcanizer to prepare the fluororubber / nanofiller composite material. The preparing method of the fluororubber / nanofiller composite material is simple in technology, free of pollution of solvent, free of dust flying upward, green and environmentally friendly, and capable of being applied to various recombination of nanofiller and rubber and being popularized.

Description

technical field [0001] The invention relates to fluororubber, in particular to a method for preparing a fluororubber / nano-filler composite material, and belongs to the technical field of rubber nanocomposite materials. [0002] technical background [0003] Fluorine rubber is an elastomer containing fluorine atoms on the carbon atoms of the molecular main chain or side chain. The introduction of fluorine atoms endows fluorine rubber with excellent heat resistance, chemical medium resistance, oil resistance and weather resistance, so fluorine rubber can be used as High-performance sealing materials for automobiles, machinery, aviation, aerospace and other fields. However, the mechanical strength of fluororubber itself is not high, and the high-temperature mechanical properties drop seriously. Therefore, adding nano-fillers to fluororubber can make fluororubber nanocomposites have better mechanical properties and gas barrier properties. [0004] At present, the preparation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08K13/02C08K3/34C08K3/22C08K5/3492C08K5/14C08K13/06C08K9/04C08K3/04C08K3/38C08K7/24B29B7/74B29C35/02
CPCB29B7/005B29B7/7461B29C35/02C08K3/04C08K3/22C08K3/346C08K3/38C08K5/14C08K5/34924C08K7/24C08K9/04C08K9/08C08K13/02C08K13/06C08K2003/2296C08K2003/385C08K2201/011C08L27/16
Inventor 郭建华高伟曾幸荣
Owner SOUTH CHINA UNIV OF TECH
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