Chemically resistant PEP special plastic pipe
By installing a protective structure consisting of chlorinated flame retardant, glass fiber, and epoxy resin layers on the outer wall of the PEP special plastic pipe, and a polytetrafluoroethylene coating on the inner wall, the problems of corrosion and mechanical damage to the plastic pipe are solved, resulting in a longer service life and higher conveying efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU AIFULONG NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-21
AI Technical Summary
Existing PEP special plastic pipes have shortcomings in terms of outer and inner wall protection, leading to corrosion and mechanical damage, which affects service life and transportation efficiency.
A protective structure consisting of a chlorinated flame retardant coating, a fiberglass layer, and an epoxy resin layer is installed on the outer wall of the plastic pipe, while a polytetrafluoroethylene coating is installed on the inner wall, providing flame retardant, reinforcement, and corrosion protection, respectively.
It improves the wear resistance and corrosion resistance of plastic pipes, enhances structural integrity and conveying efficiency, extends service life and improves safety.
Smart Images

Figure CN224533698U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PEP special plastic pipe technology, specifically a chemical corrosion resistant PEP special plastic pipe. Background Technology
[0002] PEP special plastic pipes can be used for gas transportation, with good pressure resistance and safety. They are also used in oil transportation. When transporting materials, a chemically resistant PEP special plastic pipe is required.
[0003] Currently, most plastic pipes are difficult to protect on their outer walls. During use, this lack of protection leads to prolonged exposure of the pipe's outer wall to soil and groundwater in industrial environments. This causes gradual corrosion, compromising structural integrity and shortening the pipe's lifespan. Furthermore, the pipe may suffer mechanical damage from impacts and pressure, resulting in cracks, scratches, and leaks. This further reduces the pipe's lifespan and practicality. Similarly, the difficulty in protecting the inner wall of the pipe during material transport means that materials containing corrosive substances can corrode the pipe's interior, leading to leaks over time. Additionally, the high viscosity of the plastic pipe during transport can reduce efficiency, further shortening its lifespan and reducing transport efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a chemically resistant PEP special plastic pipe to solve the problems raised in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a chemically resistant PEP special plastic pipe, comprising a plastic pipe body, a protective mechanism provided on the outer wall of the plastic pipe body, the protective mechanism comprising a chlorinated flame retardant coating, the outer wall of the plastic pipe body being provided with a chlorinated flame retardant coating, the outer wall of the chlorinated flame retardant coating being provided with a glass fiber layer, and the outer wall of the glass fiber layer being provided with an epoxy resin layer.
[0006] As a preferred technical solution, a polyethylene layer is provided on the outer wall of the epoxy resin layer, and the shape and size of the epoxy resin layer match the shape and size of the polyethylene layer.
[0007] As a preferred technical solution, the shape and size of the chlorinated flame retardant coating match the shape and size of the plastic pipe body, and the shape of the chlorinated flame retardant coating is annular.
[0008] As a preferred technical solution, the shape and size of the glass fiber layer match the shape and size of the chlorinated flame retardant coating, and the shape of the glass fiber layer is annular.
[0009] As a preferred technical solution, the shape and size of the glass fiber layer match the shape and size of the epoxy resin layer, and the epoxy resin layer is annular in shape.
[0010] As a preferred technical solution, the inner wall of the plastic tube body is provided with a polytetrafluoroethylene coating, and the shape and size of the plastic tube body match the shape and size of the polytetrafluoroethylene coating.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. This utility model, through the design of a protective mechanism, achieves the function of protecting the exterior of the plastic pipe. During use, a chlorinated flame retardant coating gives the plastic pipe a certain flame-retardant property; a glass fiber layer enhances the strength of the plastic pipe, making it more resistant to external forces and less prone to deformation or damage; an epoxy resin layer resists external corrosive media and prevents chemical corrosion; and a polyethylene layer gives the plastic pipe good wear resistance and corrosion resistance. This avoids the situation where the outer wall of the plastic pipe is exposed to soil and groundwater for a long time in an industrial environment, which would gradually corrode the outer wall, destroying its structural integrity, shortening its service life, and potentially causing damage from mechanical forces such as impacts and compression, leading to cracks, scratches, and leaks. Therefore, this invention ensures the service life and practicality of the plastic pipe.
[0013] 2. This utility model, through the application of a polytetrafluoroethylene (PTFE) coating, can protect the inner wall of the plastic pipe. During use, the PTFE coating prevents the transported materials from corroding the inner wall of the plastic pipe, while also making the inner wall smoother and improving its transport efficiency. This avoids the situation where it is difficult to protect the inner wall of the plastic pipe, which may lead to corrosive substances in some materials. These corrosive substances can corrode the inside of the plastic pipe, causing leakage and other problems with long-term use. Additionally, the high viscosity of the plastic pipe itself may result in low transport efficiency during transport. This invention ensures the service life and transport efficiency of the plastic pipe. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present utility model;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the plastic pipe body of this utility model;
[0016] Figure 3 This is a schematic diagram of the side cross-sectional structure of the plastic pipe body of this utility model.
[0017] The components are: 1. Plastic pipe body; 2. Protective mechanism; 201. Chlorinated flame retardant coating; 202. Glass fiber layer; 203. Epoxy resin layer; 204. Polyethylene layer; 3. Polytetrafluoroethylene coating. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Example: Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides the following technical solution, including a plastic tube body 1, a protective mechanism 2 provided on the outer wall of the plastic tube body 1, and a polytetrafluoroethylene coating 3 provided on the inner wall of the plastic tube body 1.
[0020] Specifically: When the plastic tube body 1 is needed, the outside of the plastic tube body 1 needs to be protected first. The protective mechanism 2 is used to protect the outside of the plastic tube body 1. After the outside is protected, the inner wall of the plastic tube body 1 needs to be protected. The polytetrafluoroethylene coating 3 is used to protect the inner wall of the plastic tube body 1. Then the plastic tube body 1 can be used to carry out the work and complete the task.
[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a protective mechanism 2 is provided on the outer wall of the plastic pipe body 1. The protective mechanism 2 includes a chlorinated flame retardant coating 201. The outer wall of the plastic pipe body 1 is provided with a chlorinated flame retardant coating 201. A glass fiber layer 202 is provided on the outer wall of the chlorinated flame retardant coating 201. An epoxy resin layer 203 is provided on the outer wall of the glass fiber layer 202. A polyethylene layer 204 is provided on the outer wall of the epoxy resin layer 203. The shape and size of the epoxy resin layer 203 match the shape and size of the polyethylene layer 204. The shape and size of the chlorinated flame retardant coating 201 match the shape and size of the plastic pipe body 1, and the chlorinated flame retardant coating 201 is annular. The shape and size of the glass fiber layer 202 match the shape and size of the chlorinated flame retardant coating 201, and the glass fiber layer 202 is annular. The shape and size of the glass fiber layer 202 match the shape and size of the epoxy resin layer 203, and the epoxy resin layer 203 is annular.
[0022] Specifically: When the plastic pipe body 1 is required, the exterior of the plastic pipe body 1 needs to be protected. The polyethylene layer 204 provides the plastic pipe body 1 with good wear resistance and corrosion resistance, protecting it from external corrosion and providing long-term protection. The epoxy resin layer 203 provides the plastic pipe body 1 with excellent chemical corrosion resistance. The glass fiber layer 202 improves the strength and rigidity of the plastic pipe body 1, enhancing the pipe's load-bearing capacity and stability. The chlorinated flame retardant coating 201 provides the plastic pipe body 1 with certain flame retardant properties, ensuring high safety in the event of a fire, thus completing the external protection work.
[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the inner wall of the plastic tube body 1 is provided with a polytetrafluoroethylene coating 3, and the shape and size of the plastic tube body 1 match the shape and size of the polytetrafluoroethylene coating 3.
[0024] Specifically: When it is necessary to protect the inner wall of the plastic pipe body 1, the polytetrafluoroethylene coating 3 is provided to prevent the material from corroding the inner wall of the plastic pipe body 1 when it is transporting some corrosive materials. At the same time, the polytetrafluoroethylene coating 3 makes the inner wall of the plastic pipe body 1 smoother, reducing resistance and scaling during fluid transportation, thereby completing the internal protection work.
[0025] The working principle of this utility model is as follows: When the plastic pipe body 1 is needed, the exterior of the plastic pipe body 1 must first be protected. The polyethylene layer 204 provides the plastic pipe body 1 with good wear resistance and corrosion resistance, protecting it from external corrosion and providing long-term protection. The epoxy resin layer 203 provides the plastic pipe body 1 with excellent chemical corrosion resistance. The glass fiber layer 202 improves the strength and rigidity of the plastic pipe body 1, enhancing the pipe's load-bearing capacity and stability. The chlorinated flame retardant coating 2... 01 gives the plastic pipe body 1 a certain flame-retardant property, ensuring high safety in the event of a fire, thus completing the external protection work. After the external protection is done, the inner wall of the plastic pipe body 1 needs to be protected. The polytetrafluoroethylene coating 3 is set to prevent the plastic pipe body 1 from corroding the inner wall of the plastic pipe body 1 when transporting some corrosive materials. At the same time, the polytetrafluoroethylene coating 3 makes the inner wall of the plastic pipe body 1 smoother, reducing resistance and scaling during fluid transportation, thus completing the internal protection work. Then the plastic pipe body 1 can be used for work.
[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A chemically resistant PEP special plastic pipe, comprising a plastic pipe body (1), characterized in that: The outer wall of the plastic pipe body (1) is provided with a protective mechanism (2), the protective mechanism (2) includes a chlorinated flame retardant coating (201), the outer wall of the plastic pipe body (1) is provided with a chlorinated flame retardant coating (201), the outer wall of the chlorinated flame retardant coating (201) is provided with a glass fiber layer (202), and the outer wall of the glass fiber layer (202) is provided with an epoxy resin layer (203).
2. The chemically resistant PEP special plastic pipe according to claim 1, characterized in that: The outer wall of the epoxy resin layer (203) is provided with a polyethylene layer (204), and the shape and size of the epoxy resin layer (203) match the shape and size of the polyethylene layer (204).
3. The chemically resistant PEP special plastic pipe according to claim 1, characterized in that: The shape and size of the chlorinated flame retardant coating (201) match the shape and size of the plastic tube body (1), and the shape of the chlorinated flame retardant coating (201) is annular.
4. The chemically resistant PEP special plastic pipe according to claim 3, characterized in that: The shape and size of the glass fiber layer (202) match the shape and size of the chlorinated flame retardant coating (201), and the shape of the glass fiber layer (202) is annular.
5. The chemically resistant PEP special plastic pipe according to claim 4, characterized in that: The shape and size of the glass fiber layer (202) match the shape and size of the epoxy resin layer (203), and the epoxy resin layer (203) is annular in shape.
6. The chemically resistant PEP special plastic pipe according to claim 1, characterized in that: The inner wall of the plastic tube body (1) is provided with a polytetrafluoroethylene coating (3), and the shape and size of the plastic tube body (1) match the shape and size of the polytetrafluoroethylene coating (3).