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Terafluoroethylene-propylene rubber composition resistant to hydrogen sulfide corrosion and application thereof

A tetrapropylene fluoride rubber and hydrogen sulfide-resistant technology, which is applied in the field of polymer rubber materials, can solve the problems of low hardness, poor low temperature resistance of tetrapropylene fluorine rubber, and the inability to meet the requirements of anti-implosion and anti-extrusion deformation. The effect of excellent hydrogen sulfide corrosion, optimized vulcanization system, and excellent hydrogen sulfide corrosion resistance

Pending Publication Date: 2019-08-23
上海杜实新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN102250437B discloses a tetrapropylene fluorine rubber composition resistant to acid, alkali and hydrogen sulfide corrosion, which can be used to prepare rubber products used in hydrogen sulfide environments. The patent uses a cage-type silsesquisil Oxygen is used as a cross-linking accelerator to form a cross-linking structure with peroxide vulcanization to improve the stability of tetrapropylene fluorine rubber under acidic conditions, but the performance of the vulcanized material of the inventive composition is too low for high-pressure conditions In this case, the anti-implosion and anti-extrusion deformation requirements cannot be met
Tetrapropylene fluorine rubber with general molecular structure has poor low temperature resistance, and the glass transition temperature is only about -3°C, so it has certain limitations when used in low temperature environments.

Method used

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  • Terafluoroethylene-propylene rubber composition resistant to hydrogen sulfide corrosion and application thereof
  • Terafluoroethylene-propylene rubber composition resistant to hydrogen sulfide corrosion and application thereof
  • Terafluoroethylene-propylene rubber composition resistant to hydrogen sulfide corrosion and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of tetrapropylene fluororubber composition resistant to hydrogen sulfide corrosion

[0026] Table 1 is the formulation of No. 1 to No. 6 tetrapropylene fluororubber compositions, wherein the detailed weight ratio of each component in the raw material is shown in Table 1.

[0027] Table 1 No. 1-6 tetrapropylene fluororubber composition formula

[0028] serial number number 1 number 2 number 3 No 4 Number 5 number 6 FEPM Rubber Aflas 100S 100.00 100.00 100.00 100.00 FEPM Rubber Viton ETP600S 100.00 100.00 carbon nanotube GTR 5.00 10.00 5.00 Accelerator TAIC-S70 7.00 7.00 7.00 7.00 4.00 4.00 Crosslinker P14-40 2.50 2.50 2.50 2.50 Crosslinker 101XL-45 1.50 1.50 Zinc oxide META-Z 102 3.00 3.00 Carbon Black N990 20.00 15.00 20.00 20.00 50.00 20.00 Carbon black N774 25.00 Carbon Black N550 35.00 30.00 30.00 ...

Embodiment 2

[0030] (1) Performance test of tetrapropylene fluororubber composition

[0031] Each component was weighed according to the proportions of No. 1 to No. 6 formulations (parts by weight) in Example 1, and the tetrapropylene fluororubber was rolled on a double-bar opener, and carbon nanotubes, cross-linking agents, accelerators, suction Add the auxiliary materials such as acid agent, carbon black and processing aids into the open mill and mix with tetrapropylene fluororubber. Cut the rubber mixture on the left and right sides of the rolls 8 times each, adjust the roll distance of the mill to the smallest, roll or make triangles. The bag method is 10 times, the entire mixing time is controlled within 15 minutes, and the roll temperature of the open mill is controlled below 80 ° C, so that the rubber material is mixed evenly and then sliced ​​to obtain a tetrapropylene fluororubber compounded rubber. After the propylene fluoride rubber compound was aged for 16 hours, it was returne...

Embodiment 3

[0048] Example 3: Preparation of tetrapropylene fluororubber composition

[0049] (1) 100 parts by weight of tetrafluoroethylene-propylene polymer Aflas 100S was uniformly masticated on a two-roll mill and rolled, and then 15 parts by weight of carbon nanotubes, 1 part by weight of 1,3-bis( tert-butylperoxy) dicumylbenzene, 1 part by weight of triallyl isocyanurate, 40 parts by weight of filler carbon black N990, 1 part by weight of sodium stearate were mixed uniformly in advance, and gradually Add it to the open mill, and mix the tetrapropylene fluororubber with the auxiliary materials;

[0050] (2) After mixing the tetrapropylene fluororubber with the auxiliary materials, cut the rubber mixture on the left and right sides of the roll wrapping knives 5 times each, adjust the roll distance of the open mill to the minimum, roll or roll the triangular wrapping method 10 times, and control the whole mixing time at Between 15 minutes, the roll temperature of the open mill is cont...

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Abstract

The invention relates to polymer rubber materials, and discloses a terafluoroethylene-propylene rubber composition resistant to the hydrogen sulfide corrosion and an application thereof. The terafluoroethylene-propylene rubber composition is prepared from the following raw materials in parts by weight: 100 parts of terafluoroethylene-propylene rubber, 1-3 parts of a crosslinking agent, 1-8 parts of an accelerator, 1-5 parts of an acid absorber, 1-15 parts of carbon nanotubes, 40-60 parts of filler, and 1-3 parts of a processing auxiliary agent. The terafluoroethylene-propylene rubber composition resistant to the hydrogen sulfide corrosion has excellent anti-implosion performance, anti-extrusion performance, and excellent high-concentration hydrogen sulfide corrosion resistance, and the low-temperature resistance is also greatly improved.

Description

technical field [0001] The invention relates to a polymer rubber material, in particular to a hydrogen sulfide corrosion-resistant tetrapropylene fluorine rubber composition and its application. Background technique [0002] With the gradual increase of oil and gas drilling and production depth, the composition and pressure of oil and gas become more complex. Therefore, oil and gas drilling, transmission and processing related equipment have put forward higher requirements for related rubber sealing materials. Under high temperature and high pressure conditions, in addition to excellent physical and mechanical properties, rubber materials are proposed to resist implosion (AED, Anti-Explosive Decompression) or resist rapid gas release (RGD, Rapid Gas Decompression), and rubber materials Material anti-extrusion deformation (ER, Extrusion Resistance) and other special performance requirements. In recent decades, oil and gas fields containing hydrogen sulfide corrosive medium h...

Claims

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Application Information

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IPC IPC(8): C08L27/18C08K13/02C08K3/04C08K3/22C08K5/3492C08K5/14
CPCC08K3/04C08K3/22C08K5/14C08K5/34924C08K13/02C08K2003/2296C08K2201/011C08K3/041C08L27/18
Inventor 刘丽
Owner 上海杜实新材料科技有限公司
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