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High temperature steam and oil resistant fluororubber pad

A rubber gasket, high temperature resistant technology, applied in the field of sealing gasket, can solve the problem of poor steam resistance of F26 compound rubber, and achieve the effect of prolonging the service time

Active Publication Date: 2005-11-30
蒋惠成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, in the domestic oil production process line, many of them use boiler high-temperature steam (about 180°C) and power plant residual steam (about 180°C) to heat oil, but F26 compound rubber has poor steam resistance and can only be heated at <160°C. use at ℃

Method used

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  • High temperature steam and oil resistant fluororubber pad
  • High temperature steam and oil resistant fluororubber pad
  • High temperature steam and oil resistant fluororubber pad

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Step 1. Prepare F26 rubber compound:

[0030] Take 100 parts of 26-type fluororubber, 2 parts of vulcanizing agent hexafluorobisphenol A, 0.7 parts of vulcanizing agent benzyl triphenyl phosphorus chloride, 30 parts of filler spray carbon black, 6 parts of vulcanization accelerator magnesium oxide, accelerator hydrogen 6 parts of calcium oxide, 2.2 parts of polyethylene wax, placed in a container, stirred and mixed evenly for later use;

[0031] Step 2. Preparation of HNBR rubber compound:

[0032] Take 100 parts of hydrogenated nitrile rubber, 48 parts of spray carbon black, 32 parts of 539 quick extruded carbon black, 2.6 parts of dicumyl peroxide, 1.5 parts of triallyl cyanurate, 0.2 parts of polyethylene wax, paraffin wax 3 parts of oil, put in a container, stir and mix evenly for later use;

[0033] Step 3. Prepare the mixed rubber gasket:

[0034] Take 70 parts of F26 compound rubber and 30 parts of HNBR compound rubber, put them in a container, stir and mix th...

Embodiment 2

[0036] Step 1. Prepare F26 rubber compound:

[0037] Take 100 parts of 26-type fluororubber, 2.2 parts of hexafluorobisphenol A, 0.5 parts of benzyl triphenylphosphorous chloride, 35 parts of spray carbon black, 5 parts of magnesium oxide, 7 parts of calcium hydroxide, and 2 parts of polyethylene wax , placed in a container and stirred evenly for later use;

[0038] Step 2. Preparation of HNBR rubber compound:

[0039] Take 100 parts of hydrogenated nitrile rubber, 52 parts of spray carbon black, 28 parts of 539 quick extruded carbon black, 2.8 parts of dicumyl peroxide, 1.3 parts of triallyl cyanurate, 0.3 parts of polyethylene wax, paraffin wax 2 parts of oil, put in a container, stir and mix evenly for later use;

[0040] Step 3. Prepare the mixed rubber gasket:

[0041] Take 75 parts of F26 compound rubber and 25 parts of HNBR compound rubber respectively, put them in a container, stir and mix them evenly, mold them into shape, and treat them with hot air twice to get h...

Embodiment 3

[0043] Step 1. Prepare F26 rubber compound:

[0044] Take 100 parts of 26-type fluororubber, 2.1 parts of hexafluorobisphenol A, 0.6 parts of benzyltriphenylphosphorous chloride, 33 parts of spray carbon black, 5.5 parts of magnesium oxide, 6.5 parts of calcium hydroxide, and 2.1 parts of polyethylene wax , placed in a container and stirred evenly for later use;

[0045] Step 2. Preparation of HNBR rubber compound:

[0046] Take 100 parts of hydrogenated nitrile rubber, 50 parts of spray carbon black, 30 parts of 539 quick extruded carbon black, 2.7 parts of dicumyl peroxide, 1.4 parts of triallyl cyanurate, 0.25 parts of polyethylene wax, paraffin wax 2.5 parts of oil, put in a container, stir and mix evenly for later use;

[0047] Step 3. Prepare the mixed rubber gasket:

[0048] Take 72 parts of F26 rubber compound, 28 parts of HNBR rubber compound and 2 parts of thickening aid, put them in a container, stir and mix them evenly, mold them, and heat them for the second ti...

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Abstract

The invention relates to a thermostable viton gasket, which is mainly used as sealing element in plate exchanger using high temperature steam and heating oil. The viton gasket comprises 70-75 wt% of F26 ready-mixed glue and 25-30 wt% of HNBR ready-mixed glue. Said F26 ready-mixed glue comprises 100 wt% of 26-style rubber, 2-2.2 wt% of hexaflurate bisphenol A and so on. HNBR ready-mixed glue comprises 100 wt% of hydrogenated rubber, 48-52 wt% of black pigment and so on. The invention can resist high temperature steam and oil.

Description

Technical field: [0001] The invention relates to a sealing gasket, in particular to a high-temperature steam-resistant and high-temperature oil-resistant fluororubber gasket. It is mainly used as a seal in plate heat exchangers that use high-temperature steam to heat oil in oil production lines. It belongs to the technical field of seals. Background technique: [0002] The plate heat exchanger consists of three major components: heat exchanger frame, heat exchange fins and fluororubber sealing gaskets. The gasket is also one of the most critical components of the plate heat exchanger. Before the present invention was made, the traditional sealing gaskets used as plate heat exchangers were made of F26 compound rubber series fluorine rubber. The performance of the sealing gasket is relatively good in oil-to-oil exchange, which is determined by the performance of the F26 compound itself. But at present, in the domestic oil production process line, many of them use boiler hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12
Inventor 蒋惠成
Owner 蒋惠成
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