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Acidproof, alkali-proof and hydrogen-sulphide-corrosion-resistant aflas composite

A technology of tetrapropylene fluororubber and composition, which is applied in the field of acid-resistant, alkali-resistant and hydrogen sulfide-resistant tetrapropylene fluororubber compositions, and can solve the problems of decreased mechanical properties and seal failure of tetrapropylene fluororubber.

Inactive Publication Date: 2013-04-03
CHINA UNIV OF PETROLEUM (BEIJING)
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AI Technical Summary

Problems solved by technology

The vulcanization system of tetrapropyl fluororubber is composed of peroxide and co-vulcanizing agent. The peroxide is generally dicumyl peroxide (DCP), bis-tert-butyl peroxide dicumyl peroxide (BIBP) and benzene peroxide. Some peroxides such as formyl (BPO), while the co-vulcanizing agent is mainly allyl isocyanurate (TAIC) or triallyl cyanurate (TAC), etc., the crosslinking formed by the final vulcanizate The structure contains amide group, and the amide group will occur in acid environment, such as The decomposition reaction shown in Figure 1 reduces the mechanical properties of tetrapropylene fluorine rubber, resulting in seal failure

Method used

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  • Acidproof, alkali-proof and hydrogen-sulphide-corrosion-resistant aflas composite
  • Acidproof, alkali-proof and hydrogen-sulphide-corrosion-resistant aflas composite
  • Acidproof, alkali-proof and hydrogen-sulphide-corrosion-resistant aflas composite

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Embodiment 1-8 and comparative example 1

[0013] The tetrapropyl fluorine rubber (aflas100H) that adopts Asahi Glass to produce and the tetrapropyl fluorine (TP-2) that 3F company produces are main body materials, take it as 100 weight parts, coordinate preparation according to table 1 and meet the requirements of the present invention. Dicumyl oxide (DCP) is the main crosslinking agent, vinyl POSS is the auxiliary crosslinking agent, hard carbon black N330, N550 is the reinforcing material, and coumarone resin is the rubber composition of the plasticizer, namely Examples 1-8. Adopt similar coordination, make comparative example 2 with TAIC as the cross-assist agent.

[0014] The hydrogen sulfide, hydrochloric acid and sodium hydroxide corrosion tests were carried out on the vulcanized test pieces, and the results after corrosion are shown in Table 2. As can be seen from Table 2, the present invention can obtain tetrapropylene fluororubber used under hydrogen sulfide, hydrochloric acid and alkaline conditions.

[00...

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Abstract

The invention relates to an acidproof, alkali-proof and hydrogen-sulphide-corrosion-resistant aflas composite. In the composite, aflas serves as main material, organic peroxide serves as a cross linking agent, vinyl polyphenyl silsesquioxane serves as an assistant cross-linking agent, hard carbon black serves as an enhanced filler, and resin serves as a flow modifier. The composite can be used for preparing rubber products used in an acid or alkali environment, especially in the hydrogen sulfide environment.

Description

technical field [0001] The present invention relates to a kind of new anti-corrosion composition of macromolecule material, specifically, relate to a kind of tetrapropylene fluorine rubber composition that can be used under the condition that hydrogen sulfide or other class acid or alkali exist, this composition It can be used to prepare rubber products used in acidic or alkaline environments. Background technique [0002] With the continuous increase of people's demand for energy and the near depletion of easily exploitable oil and gas resources, the main body of oil and gas field development has gradually turned to resources that are difficult to exploit, such as high hydrogen sulfide content. Early 1980s. During the production process of high-sulfur oil and gas fields, high temperature and high pressure H 2 S / CO 2 The working conditions will cause strong erosion to the rubber sealing material, especially the H 2 The strong corrosiveness of S is more likely to cause se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/12C08K13/02C08K5/14C08K5/549C08K5/37C08K5/3437C08K3/04
Inventor 丛川波周琼
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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