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Epoxy resin sealant for pressure jointed pipes and its production process

A technology of epoxy resin and crimping tubes, which is applied in the direction of epoxy resin glue, chemical instruments and methods, adhesives, etc., can solve the problems of poor resistance to strong acid, difficulty in forming a continuous and complete inner coating system, etc., and achieve long operation period , Excellent adhesion, easy to use

Inactive Publication Date: 2006-11-15
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing oil and gas field gathering and transportation pipelines need internal joints when they are connected by pipe end welding, but it is difficult to form a continuous and complete internal coating system
When using the pipe crimping method to connect, the interference fit prefabricated two-socket intubation pipe ends are coated with sealant and then crimped. The existing sealants have poor resistance to strong acids and are not suitable for acid gas gathering pipelines and high-sulfur gathering pipelines. pipeline

Method used

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Examples

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Embodiment Construction

[0012] The invention relates to a method for manufacturing epoxy resin sealant for connection of crimped pipes. In a stainless steel bucket, first add 1 weight part of epoxy resin, then add 0.1 weight part of cashew nut shell oil modified epoxy resin modifier, stir and disperse at high speed for 0.5h, then add 0.2 weight part of precipitate under stirring Barium sulfate, 0.1 parts by weight of graphite, 0.1 parts by weight of polytetrafluoroethylene, 0.02 parts by weight of polyhydroxycarboxylate solution, 0.02 parts by weight of polyacrylate copolymer solution, 0.02 parts by weight of polymethylalkylsiloxane solution, 0.03 parts by weight Parts by weight of γ-(2,3-glycidyloxy)propyltrimethoxysilane, 0.08 parts by weight of polyamide wax, and then use a sand mill to circulate and grind for 0.5 to 1 hour to make liquid A; liquid B is modified from cashew nut shell oil. sex amine composition. When in use, mix and stir 1 part by weight of liquid A and 0.3 parts by weight of liqu...

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PUM

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Abstract

The invention relates to an epoxy resin sealant for crimping pipe connection and a manufacturing method thereof. The liquid A and the cashew nut shell oil are modified by epoxy resin, cashew nut shell oil modified epoxy resin modifier, auxiliary agent, pigment and filler. It is made by mixing liquid B made of sex amine. It can be quickly cured under low temperature and humidity, has a long operating period and is easy to use. Its cured coating has excellent resistance to strong acids and can withstand a mixed solution of 15% hydrochloric acid and 15% hydrofluoric acid at 50°C. It can be used for crimping pipe connection construction of acid gas gathering pipelines and high sulfur gathering pipelines with internal anti-corrosion coating.

Description

technical field [0001] The invention relates to an epoxy resin sealant for crimping pipe connections and a manufacturing method thereof, which can be used for crimping pipe connections of acid gas gathering and transportation pipelines with internal anti-corrosion coatings and high-sulfur gathering and transportation pipelines. technical background [0002] The existing oil and gas field gathering and transportation pipelines need internal joints when they are connected by pipe end welding, but it is difficult to form a continuous and complete internal coating system. When using the pipe crimping method to connect, the interference fit prefabricated two-socket pipe ends are coated with sealant and then crimped. The existing sealants have poor resistance to strong acids and are not suitable for acid gas gathering pipelines and high-sulfur gathering pipelines. pipeline. Contents of the invention [0003] The technical problem to be solved by the present invention is to avoi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09K3/10
Inventor 徐翠竹张丽萍张彦军解蓓蓓林竹王雪莹秦延龙
Owner BC P INC CHINA NAT PETROLEUM CORP
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