Preparation method of bondable polyfluortetraethylene plate anti-corrosion lining

Abstract

The invention discloses a preparation method of a bondable polyfluortetraethylene plate anti-corrosion lining. The preparation method comprises the specific steps that a polyfluortetraethylene plate is grinded with abrasive paper, is cleaned with acetone and is put into a mixed solution of sodium, naphthalene and tetrahydrofuran for surface activation treatment; the surface of the treated polyfluortetraethylene plate is coated with an epoxy resin pre-coated adhesive to obtain the treated polyfluortetraethylene plate instant to adhere; then, a steel plate and the polyfluortetraethylene plate are superposed and bonded together through an epoxy hot-melt adhesive, and the anti-corrosion lining is obtained after curing is performed for 24 hours. Due to the fact that a preparation process is simple, the construction is easy, the labor costs for construction is low, the raw materials are easy to obtain, the price is relatively cheap, and the obtained polyfluortetraethylene plate anti-corrosion lining has the advantages of high bonding tensile strength, short drying time, high in bonding stability, excellent physical and chemical properties and the like, and is expected to replace a most often used glass fiber reinforced plastic lining.

Description

technical field [0001] The invention belongs to the field of chemical anticorrosion materials, and in particular relates to a preparation method of a polytetrafluoroethylene board anticorrosion lining. technical background [0002] In many fields such as petrochemical industry, general traditional materials, such as carbon steel, copper and other metal materials, in order to reduce their corrosion degree and prolong their service life, it is necessary to take some anti-corrosion equipment and measures for corrosion protection, such as in equipment A barrier layer is set between the substrate and the chemical medium, which is the so-called "liner". [0003] Polytetrafluoroethylene (PTFE) is an ideal material in the field of chemical anticorrosion, but when pure PTFE is used in chemical equipment such as pipelines, it cannot meet the strength and stiffness requirements, and is expensive and difficult to process. Therefore, it is an economical and durable method to use a metal...

AI Technical Summary

Problems solved by technology

These methods have relatively successful cases, but the process is relatively complicated and difficult.

For example: the bonding method requires surface pretreatment of PTFE. When the technological conditions on the construction site are limited and the environment is dirty and other problems occur, it is difficult to obtain PTFE boards with good surface pretreatment effects, which will affect the lining, and Its ultimate anti-corrosion effect and service life

[0006] In the past pipes, people would choose polytetrafluoroethylene with better weather resistance as the pipe lining. However, the adhesion performance of the lining to the pipe is often ignored. Ignoring this point may lead to the overall performance of the pipe. sex decline

[0007] For example, the Chinese patent "A Manufacturing Process for Polytetrafluoroethylene Pipes and Linings" discloses a manufacturing process for polytetrafluoroethylene pipes and linings, using polytetrafluoroethylene combined with high-temperature resistant acrylic resin glue as the lining, which improves the anti-corrosion Corrosion performance, although the lining adhesion is taken into account, but the condition of external high pressure must be used, which increases the production cost

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