CN213402338U

CN213402338U - Antistatic enhanced hot-melt connecting pipe fitting and hot-melt connecting structure of pipe fitting

Info

Publication number: CN213402338U
Application number: CN202022798686.7U
Authority: CN
Inventors: 吴新裕; 吴佳妮
Original assignee: Jiangsu Zhong Tong Pipe Industry Co ltd
Current assignee: Jiangsu Zhong Tong Pipe Industry Co ltd
Priority date: 2020-11-28
Filing date: 2020-11-28
Publication date: 2021-06-08
Anticipated expiration: 2030-11-28

Abstract

The utility model discloses a pipe fitting is connected to antistatic enhancement mode hot melt, for antistatic composite tube structure, composite tube structure from interior to exterior includes random copolymerization polypropylene inlayer, fine reinforcing random copolymerization polypropylene sandwich layer of glass and random copolymerization polypropylene top layer, is provided with between fine reinforcing random copolymerization polypropylene sandwich layer of glass and the random copolymerization polypropylene top layer and hinders wet layer. This antistatic enhancement mode hot melt connection pipe fitting adopts multilayer composite construction, through increasing the wet layer of hindering, reduces because of the fine reinforcing polyethylene layer probability that absorbs water and lead to local mechanical strength to reduce, makes the mechanical properties of the pipe fitting junction on fine reinforcing polypropylene layer more tend towards reliable and stable, guarantees the life of pipe fitting. The utility model also discloses a pipe fitting hot melt connection structure.

Description

Antistatic enhanced hot-melt connecting pipe fitting and hot-melt connecting structure of pipe fitting

Technical Field

The utility model relates to a tubular product technical field, concretely relates to pipe fitting and pipe fitting hot melt connection structure are connected to antistatic enhancement mode hot melt.

Background

The hot melting connection process of the power pipeline made of polyethylene materials is as follows: the method comprises the following steps of horizontally clamping an electric power pipeline on a positioning seat, placing a planer tool in an interval between end faces of the electric power pipeline to plane the end faces, removing the planer tool, placing heating plates in the interval, adjusting the end faces of the electric power pipeline to be in contact with the heating plates, removing the heating plates after the end faces of the electric power pipeline absorb heat and soften, driving the end faces of the two pipelines to move relatively and extrude by using a clamping piece of the pipeline on the positioning seat, enabling molten polypropylene materials on the end faces to overflow under the action of pressure and forming convex rings on connecting parts, and planing the convex rings to form the integrally connected polypropylene pipeline.

The common reinforced power pipeline in the prior art is generally of a two-layer or three-layer structure, such as CN201639215U, CN202930886U, and CN207028122U, the material of the middle layer contains reinforcing fibers, and the glass fiber reinforced pipe has better rigidity, shrinkage, stress cracking performance, tensile strength, and compressive strength. Because the glass fiber needs to be added in a certain length to play the reinforcing effect, a coupling agent and the like are usually added into the polypropylene material to improve the compatibility of the glass fiber and the polypropylene material, and the addition of the glass fiber and the auxiliary agent can enhance the moisture absorption performance of the polyethylene material, which is unfavorable for the ionization pipeline. In addition, the hot melt connection process easily leads to the fine polyethylene layer of glass reinforcing to turn up, and then reduces the interval between fine polyethylene material of glass reinforcing and the pipe outer wall, though the polypropylene has the enhancement layer of good kneck and absorbs moisture more easily, influences tubular product life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide an antistatic enhancement mode hot melt connection pipe fitting, hot melt connection pipe fitting hinders bonding between the wet layer, avoids absorbing water because of the enhancement layer and influences the problem of local mechanical strength of pipeline and life.

Realize above-mentioned technological effect, the utility model discloses a technical scheme does: the utility model provides an antistatic enhancement mode hot melt connecting pipe fitting, is antistatic composite tube structure, composite tube structure from inside to outside includes random copolymerization polypropylene inlayer, glass fibre reinforcing random copolymerization polypropylene sandwich layer and random copolymerization polypropylene top layer, be provided with between glass fibre reinforcing random copolymerization polypropylene sandwich layer and the random copolymerization polypropylene top layer and hinder wet layer.

The preferable technical scheme is that a random copolymerization polypropylene core layer is further arranged between the glass fiber reinforced random copolymerization polypropylene core layer and the random copolymerization polypropylene surface layer, the random copolymerization polypropylene core layer is connected with the glass fiber reinforced random copolymerization polypropylene core layer in an adhering mode, and the moisture resistance layer is clamped between the random copolymerization polypropylene core layer and the random copolymerization polypropylene surface layer. The random copolymerization polypropylene core layers of the butt-jointed pipelines are in hot-melt connection, and the glass fiber reinforced random copolymerization polypropylene core layers are protected by the low water absorption of polypropylene.

The preferable technical scheme is that the random copolymerization polypropylene inner layer and the random copolymerization polypropylene surface layer are antistatic layers.

The preferred technical scheme is that the random copolymerization polypropylene inner layer, the glass fiber reinforced random copolymerization polypropylene core layer and the random copolymerization polypropylene surface layer are antistatic layers.

The preferable technical scheme is that the material of the moisture barrier layer is ethylene-vinyl alcohol copolymer. The ethylene-vinyl alcohol copolymer and the polypropylene material can be directly compounded, not only has good moisture resistance, but also has stronger oil resistance, organic solvent resistance, wear resistance, weather resistance and antistatic property, and is beneficial to improving the overall performance of the pipe.

The utility model discloses a second purpose provides a pipe fitting hot melt connection structure, connects the pipe fitting based on foretell antistatic enhancement mode hot melt, connect the pipe fitting including the antistatic enhancement mode hot melt that two terminal surfaces hot melt are connected, hot melt junction circumference is provided with hinders wet coating or hydrophobic coating.

The utility model has the advantages and the beneficial effects that:

this antistatic enhancement mode hot melt connection pipe fitting adopts multilayer composite construction, through increasing the wet layer of hindering, reduces because of the fine reinforcing polyethylene layer probability that absorbs water and lead to local mechanical strength to reduce, makes the mechanical properties of the pipe fitting junction on fine reinforcing polypropylene layer more tend towards reliable and stable, guarantees the life of pipe fitting.

Drawings

FIG. 1 is a schematic view showing the structure of an antistatic reinforced hot-melt joining pipe member in example 1;

FIG. 2 is a schematic view showing the structure of an antistatic reinforced hot-melt joining pipe member in example 1;

FIG. 3 is a schematic structural view of a hot-melt joining structure of pipe members according to example 3;

in the figure: 1. an inner layer of random copolymer polypropylene; 2. a glass fiber reinforced polypropylene random copolymer core layer; 3. a random copolymerized polypropylene skin layer; 4. a moisture barrier layer; 5 a polypropylene random copolymer core layer; 6. a moisture barrier coating.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example 1

As shown in fig. 1, the antistatic reinforced hot-melt connecting pipe fitting of embodiment 1 is an antistatic composite pipe structure, the composite pipe structure includes, from inside to outside, an inner layer 1 of random copolymer polypropylene, a core layer 2 of glass fiber reinforced random copolymer polypropylene, and a surface layer 3 of random copolymer polypropylene, and a moisture barrier layer 4 is disposed between the core layer 2 of glass fiber reinforced random copolymer polypropylene and the surface layer 3 of random copolymer polypropylene.

The inner layer 1 of random copolymer polypropylene and the surface layer 3 of random copolymer polypropylene are antistatic layers.

The material of the moisture barrier layer 4 is ethylene-vinyl alcohol copolymer.

Example 2

As shown in fig. 2, example 2 is based on example 1, and is different in that a random copolymerized polypropylene core layer 5 is further disposed between the glass fiber reinforced random copolymerized polypropylene core layer 2 and the random copolymerized polypropylene skin layer 3, the random copolymerized polypropylene core layer 5 is bonded to the glass fiber reinforced random copolymerized polypropylene core layer 2, and the moisture barrier layer 4 is sandwiched between the random copolymerized polypropylene core layer 5 and the random copolymerized polypropylene skin layer 3.

The random copolymerization polypropylene inner layer 1, the glass fiber reinforced random copolymerization polypropylene core layer 2 and the random copolymerization polypropylene surface layer 3 are all antistatic layers.

Example 3

As shown in fig. 3, the hot-melt connection structure of the pipe in embodiment 3 is based on the antistatic reinforced hot-melt connection pipe in embodiment 1 or embodiment 2, and includes the antistatic reinforced hot-melt connection pipe in hot-melt connection with two end faces, and a moisture-blocking coating 6 is circumferentially disposed at a hot-melt connection position.

The hydrophobic coating is an equivalent replacement of the moisture-resistant coating 6, and is helpful for prolonging the service life of the hot-melt connecting pipe fitting.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an antistatic enhancement mode hot melt connecting pipe fitting, is antistatic composite tube structure, composite tube structure from inside to outside includes random copolymerization polypropylene inlayer, glass fibre reinforcing random copolymerization polypropylene sandwich layer and random copolymerization polypropylene top layer, its characterized in that, be provided with between glass fibre reinforcing random copolymerization polypropylene sandwich layer and the random copolymerization polypropylene top layer and hinder wet layer.

2. The antistatic reinforced hot melt connecting pipe fitting as claimed in claim 1, wherein a random copolymerized polypropylene core layer is further disposed between the glass fiber reinforced random copolymerized polypropylene core layer and the random copolymerized polypropylene surface layer, the random copolymerized polypropylene core layer is bonded with the glass fiber reinforced random copolymerized polypropylene core layer, and the moisture blocking layer is sandwiched between the random copolymerized polypropylene core layer and the random copolymerized polypropylene surface layer.

3. The antistatic reinforced hot melt joined pipe of claim 1, wherein the inner layer of random copolymer polypropylene and the surface layer of random copolymer polypropylene are antistatic layers.

4. The antistatic reinforced hot melt joined pipe according to claim 1, wherein the inner layer of random copolymer polypropylene, the core layer of glass fiber reinforced random copolymer polypropylene and the surface layer of random copolymer polypropylene are antistatic layers.

5. The hot-melt joining pipe fitting with the enhanced antistatic property according to claim 1, wherein the moisture barrier layer is made of ethylene-vinyl alcohol copolymer.

6. A pipe hot-melt connection structure is characterized in that the antistatic enhanced hot-melt connection pipe fitting based on any one of claims 1 to 5 comprises the antistatic enhanced hot-melt connection pipe fitting which is in hot-melt connection with two end faces, and a moisture-resistant coating or a hydrophobic coating is circumferentially arranged at a hot-melt connection position.