CN216843481U - Continuous fiber pre-impregnated rib plate winding reinforced composite pipe - Google Patents

Abstract

The utility model provides a continuous fiber pre-impregnated ribbed plate winding reinforced composite pipe, which comprises a composite pipe intermediate layer, a composite pipe inner layer compounded on the inner wall of the composite pipe intermediate layer and a composite pipe outer layer compounded on the outer wall of the composite pipe intermediate layer; the composite pipe middle layer comprises a hollow polyolefin pipe spirally wound on the outer wall of the composite pipe inner layer. The utility model has the advantages that: the reinforced composite pipe reinforced by the three layers can well overcome the defects of plastic material performance, can save 30 to 70 percent of raw materials compared with a solid-wall pipe, and is a novel pipeline which integrates rigidity and flexibility into a whole, is environment-friendly and energy-saving in a real sense.

Description

Continuous fiber preimpregnation ribbed slab winding reinforcing composite pipe

[ technical field ] A method for producing a semiconductor device

The utility model discloses compound pipe technical field, in particular to compound pipe of continuous fibers preimpregnation floor winding reinforcing, it is applicable to fields such as oil gas transport, well high pressure water delivery, heat preservation pipeline, agricultural drainage and irrigation, urban rain sewage discharge, low pressure water delivery, bury ground with fire control pipe network, mining wear-resisting pipeline, non-excavation pipeline, rain sewage inspection shaft well body.

[ background of the invention ]

Polyethylene is a thermoplastic plastic with good cold resistance, chemical stability, water resistance and excellent dielectric property, has good molding process and low price, and is widely applied to the pipeline industry. However, the application of the composite material in the environment with large caliber, high internal pressure and high external pressure is limited due to the problems of low strength, poor rigidity, large linear expansion coefficient, large molding shrinkage, easy generation of environmental stress cracking and the like.

At present, polyethylene is used as a matrix material and glass fiber is used as a reinforcing material in the market, namely, the polyethylene composite material is obtained by adding the glass fiber into the polyethylene material, so that the purpose of material reinforcement is achieved. When the addition of the glass fiber is 30 percent, the polyethylene composite material has the strongest impact strength, the maximum value is 16.0 KJ/square meter and is 1.19 times of pure HDPE polyethylene; when the addition of the glass fiber is 35%, the tensile strength of the polyethylene composite material reaches the maximum value, the maximum value is 31.6Mpa, and is 1.36 times of that of pure HDPE polyethylene; when the addition of the glass fiber is 40%, the hardness of the polyethylene composite material is the highest, the maximum value is 81, and the hardness is 1.35 times that of pure HDPE polyethylene; when the glass fiber is added in 40%, the elongation at break of the polyethylene composite material is 15% at least, and is reduced by 98.2% compared with pure HDPE. Experiments show that the performance of the pipe cannot be obviously improved by simple material reinforcement. In view of the above problems, the present inventors have conducted extensive studies and have made the present invention.

[ Utility model ] content

The to-be-solved technical problem of the utility model lies in providing a continuous fibers preimpregnation floor winding reinforcing composite pipe, solves the reinforcing of current simple material and can't show improvement tubular product performance, leads to the easy problem of damaging of in-process of tubular product using.

The utility model discloses a realize like this: a continuous fiber pre-impregnated ribbed plate winding reinforced composite pipe comprises a composite pipe intermediate layer, a composite pipe inner layer compounded on the inner wall of the composite pipe intermediate layer and a composite pipe outer layer compounded on the outer wall of the composite pipe intermediate layer; the middle layer of the composite pipe comprises a hollow polyolefin pipe spirally wound on the outer wall of the inner layer of the composite pipe; the outer wall of the hollow polyolefin pipe is sequentially compounded with a first plastic layer and a first continuous fiber layer from inside to outside.

Further, the inner layer of the composite pipe comprises a second plastic layer and a second continuous fiber layer compounded on the outer wall of the second plastic layer, and the hollow polyolefin pipe is spirally wound on the outer wall of the second continuous fiber layer.

Further, the outer layer of the composite pipe comprises a third continuous fiber layer compounded on the outer wall of the middle layer of the composite pipe and a third plastic layer compounded on the outer wall of the third continuous fiber layer.

Further, the hollow polyolefin pipe is a square pipe, a round pipe, a triangular pipe or a trapezoidal pipe.

Further, the second plastic layer has a smooth inner wall.

Through adopting the technical scheme of the utility model, following beneficial effect has at least: the middle layer of the composite pipe is reinforced by the first continuous fiber layer, the inner layer of the composite pipe is reinforced by the second continuous fiber layer, and the outer layer of the composite pipe is reinforced by the third continuous fiber layer; the reinforced composite pipe reinforced by the three layers can well solve the performance defects of plastic materials, can save 30-70% of raw materials (the larger the caliber is, the more the materials are saved) compared with a solid-wall pipe, is a novel pipeline which integrates rigidity and flexibility into a whole, is environment-friendly and energy-saving in a real sense, and can completely replace the traditional cement pipe, PCCP pipe, glass steel pipe, plastic corrugated pipe, HDPE winding reinforced pipe, steel belt spiral corrugated pipe, PE pipe, nodular cast iron pipe, spiral steel pipe and the like.

[ description of the drawings ]

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of the reinforced composite pipe of the present invention taken along the length thereof;

fig. 2 is a cross-sectional view of a hollow polyolefin tube of the present invention incorporating a first plastic layer and a first continuous fiber layer.

Description of reference numerals:

100-reinforced composite pipe;

1-a composite pipe middle layer, 11-a hollow polyolefin pipe, 12-a first plastic layer, and 13-a first continuous fiber layer;

2-composite pipe inner layer, 21-second plastic layer, 211-smooth inner wall, 22-second continuous fiber layer;

3-composite pipe outer layer, 31-third continuous fiber layer, 32-third plastic layer of outer wall.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the technical solutions of the present invention will be described in detail below with reference to the drawings and specific embodiments.

It should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are only for convenience in describing the embodiments and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be configured and operated in a specific orientation. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to fig. 2, the present invention is illustrated in fig. 1 and fig. 2, and the present invention relates to a preferred embodiment of a continuous fiber pre-impregnated ribbed plate winding reinforced composite pipe 100, wherein the reinforced composite pipe 100 comprises a composite pipe intermediate layer 1, a composite pipe inner layer 2 compounded on the inner wall of the composite pipe intermediate layer 1, and a composite pipe outer layer 3 compounded on the outer wall of the composite pipe intermediate layer 1; the composite pipe middle layer 1 comprises a hollow polyolefin pipe 11 spirally wound on the outer wall of the composite pipe inner layer 2; the outer wall of the hollow polyolefin pipe 11 is compounded with a first plastic layer 12 and a first continuous fiber layer 13 from inside to outside in sequence.

The utility model discloses a design reinforcing composite pipe 100's compound tubular product intermediate level 1 include the spiral winding in the cavity polyolefin pipe 11 of compound tubular product inner 2's outer wall to it has first plastic layer 12 and first continuous fiber layer 13 to compound in proper order outside to have at the outer wall of cavity polyolefin pipe 11 from interior to exterior, because continuous fiber has high pressure resistant, high temperature resistant, corrosion-resistant, insulating properties is good, mechanical strength is high, vertical retraction rate is low, creep ratio advantage such as low, consequently can play fine reinforcing effect to compound tubular product intermediate level 1.

In the embodiment of the present invention, the composite pipe inner layer 2 includes a second plastic layer 21 and a second continuous fiber layer 22 compounded on the outer wall of the second plastic layer 21, and the hollow polyolefin pipe 11 is spirally wound on the outer wall of the second continuous fiber layer 22.

The utility model discloses a design composite pipe material inlayer 2 includes second plastic layer 21 and compounds in the second continuous fibers layer 22 of the outer wall of second plastic layer 21, because continuous fibers have high pressure resistant, high temperature resistant, corrosion-resistant, insulating properties is good, mechanical strength is high, vertical retraction rate is low, creep ratio advantage such as low, consequently can play fine reinforcing effect to composite pipe material inlayer 2.

In the embodiment of the present invention, the outer layer 3 of the composite pipe comprises a third continuous fiber layer 31 compounded on the outer wall of the middle layer 1 of the composite pipe and a third plastic layer 32 compounded on the outer wall of the third continuous fiber layer 31.

The utility model discloses an outer 3 of design composite pipe includes third continuous fiber layer 31 and compounds in the third plastic layer 32 of the outer wall of third continuous fiber layer 31, because continuous fiber has high pressure resistant, high temperature resistant, corrosion-resistant, insulating properties is good, mechanical strength is high, vertical shrinkage is low, creep ratio advantage such as low, consequently can play fine reinforcing effect to outer 3 of composite pipe. Meanwhile, the continuous fibers between the first continuous fiber layer 13 and the second continuous fiber layer 22 and between the first continuous fiber layer 13 and the third continuous fiber layer 31 are arranged in an I-shaped staggered manner, so that the overall performance of the reinforced composite pipe 100 is improved well.

In the embodiment of the present invention, the fibers of the first continuous fiber layer 13, the second continuous fiber layer 22 and the third continuous fiber layer 31 may be carbon fibers, glass fibers, steel wire fibers, aramid fibers, polyester fibers, etc.; the first plastic layer 12, the second plastic layer 21 and the third plastic layer 32 may be polypropylene, polyethylene, polybutylene, polyvinyl chloride, etc.

The utility model discloses a compound pipe 100 of reinforcing strengthens compound tubular product intermediate level 1 through utilizing first continuous fiber layer 13, utilizes second continuous fiber layer 22 to strengthen compound tubular product inlayer 2 and utilize third continuous fiber layer 31 to strengthen compound tubular product skin 3. The reinforced composite pipe 100 reinforced by the three layers has the tensile strength of 250Mpa which is more than ten times that of pure HDPE polyethylene and is close to a steel pipe, but the relative density is about 1.6 which is about 1/5 of the steel pipe, so the strength is high; the heat conductivity coefficient of the reinforced composite pipe 100 is 0.36W/(m.K), which is only 1% of that of the steel pipe, and the heat insulation performance is good; the inner wall of the reinforced composite pipe 100 is smooth, the surface roughness is 0.0053 ㎛, which is far less than the roughness of the inner wall surface of the steel pipe, and the medium flow friction is small; the reinforced composite pipe 100 has good corrosion resistance to various strong acids, strong bases, inorganic salt solutions, oxidation media, hydrogen sulfide, surfactants, polymer solutions, organic solvents and the like; the bending fatigue cycle times of the reinforced composite pipe 100 can reach more than ten thousand times, and the fatigue resistance performance is good; the working pressure of the reinforced composite pipe 100 is 0.6-25Mpa, the ring stiffness of the large-caliber reinforced composite pipe 100 can also reach more than 20 KJ/square meter, and the blank that the stiffness of a pure plastic pipeline is not enough and can be filled up well, wherein the stiffness of the pure plastic pipeline is more than 3000 mm.

The utility model discloses an in the embodiment, cavity polyolefin pipe 11 is square tubular product, circular tubular product, triangle-shaped tubular product or trapezoidal tubular product, when concrete implementation promptly, cavity polyolefin pipe 11 can adopt the arbitrary one among square tubular product, circular tubular product, triangle-shaped tubular product, the trapezoidal tubular product.

In the embodiment of the present invention, the second plastic layer 21 has a smooth inner wall 211 to reduce the friction between the fluid transported in the reinforced composite pipe 100 and the inner wall of the reinforced composite pipe 100, thereby ensuring smooth transportation of the fluid.

The utility model discloses a compound pipe 100 of reinforcing is applicable to fields such as oil gas transport, medium and high pressure water delivery, heat preservation pipeline, agricultural irrigation and drainage, urban rain sewage discharge, low pressure water delivery, bury ground with fire control pipe network, mining wear-resisting pipeline, non-excavation pipeline when specifically using.

To sum up, the utility model discloses a compound pipe of reinforcing 100 is behind the three-layer reinforcing through first continuous fiber layer 13, second continuous fiber layer 22 and third continuous fiber layer 31, not enough in the solution plastic material performance that can be fine to compound pipe of reinforcing 100 can practice thrift 30% -70% raw and other materials than the solid wall pipe (the bore is big more, the material is more economized), be a real novel pipeline that collects rigidity flexibility in an organic whole, environmental protection and energy saving, can replace traditional cement pipe, PCCP pipe, glass steel pipe, plastic corrugated pipe, HDPE winding reinforcing pipe, steel band helical bellows, PE pipe, nodular cast iron pipe, use such as spiral steel pipe completely.

The production method of the reinforced composite pipe 100 of the utility model comprises the following steps:

step S1, forming a second plastic layer 21 in an extrusion forming mode, and compounding a second continuous fiber layer 22 on the outer surface of the second plastic layer 21 in a hot melting mode to obtain a composite pipe inner layer 2; the second continuous fiber layer 22 can reinforce the inner layer 2 of the whole composite pipe, and the second continuous fiber layer 22 can be carbon fiber, glass fiber, steel wire fiber, aramid fiber, polyester fiber and the like; the second plastic layer 21 may be polypropylene, polyethylene, polybutylene, polyvinyl chloride, etc.

Step S2, spirally winding the prefabricated hollow polyolefin pipe 11 on the outer surface of the second continuous fiber layer 22 to obtain a composite pipe intermediate layer 1; the purpose of saving raw materials can be achieved by spirally winding the prefabricated hollow polyolefin pipe 11 on the second continuous fiber layer 22 to obtain the composite pipe intermediate layer 1.

Step S3, compounding a third continuous fiber layer 31 on the outer surface of the wound hollow polyolefin pipe 11 in a hot melting mode, and forming a third plastic layer 32 on the outer surface of the third continuous fiber layer 31 in an extrusion forming mode, so as to obtain a composite pipe outer layer 3; the third continuous fiber layer 31 can reinforce the outer layer 3 of the composite pipe, and the third continuous fiber layer 31 can be carbon fiber, glass fiber, steel wire fiber, aramid fiber, polyester fiber and the like; the third plastic layer 32 may be polypropylene, polyethylene, polybutylene, polyvinyl chloride, etc.

Step S4, cooling the reinforced composite pipe 100 after the reinforced composite pipe 100 is molded.

In the embodiment of the present invention, before spirally winding the prefabricated hollow polyolefin pipe 11 on the outer surface of the second continuous fiber layer 22, the prefabricated hollow polyolefin pipe 11 is further included, specifically including: the first plastic layer 12 is formed on the outer surface of the hollow polyolefin pipe 11 by means of extrusion molding, and the first continuous fiber layer 13 is compounded on the outer surface of the first plastic layer 12 by means of hot melting. The first continuous fiber layer 13 can reinforce the composite pipe intermediate layer 1, and the first continuous fiber layer 13 can be carbon fiber, glass fiber, steel wire fiber, aramid fiber, polyester fiber and the like; the first plastic layer 12 may be polypropylene, polyethylene, polybutylene, polyvinyl chloride, etc.

Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.

Claims (5)

1. A continuous fiber pre-impregnated ribbed plate winding reinforced composite pipe is characterized in that: the composite pipe comprises a composite pipe middle layer, a composite pipe inner layer compounded on the inner wall of the composite pipe middle layer and a composite pipe outer layer compounded on the outer wall of the composite pipe middle layer; the middle layer of the composite pipe comprises a hollow polyolefin pipe spirally wound on the outer wall of the inner layer of the composite pipe; the outer wall of the hollow polyolefin pipe is sequentially compounded with a first plastic layer and a first continuous fiber layer from inside to outside.

2. The reinforced composite pipe of claim 1, wherein: the inner layer of the composite pipe comprises a second plastic layer and a second continuous fiber layer compounded on the outer wall of the second plastic layer, and the hollow polyolefin pipe is spirally wound on the outer wall of the second continuous fiber layer.

3. The reinforced composite pipe of claim 1, wherein: the outer layer of the composite pipe comprises a third continuous fiber layer compounded on the outer wall of the middle layer of the composite pipe and a third plastic layer compounded on the outer wall of the third continuous fiber layer.

4. The reinforced composite pipe of claim 1, wherein: the hollow polyolefin pipe is a square pipe, a round pipe, a triangular pipe or a trapezoidal pipe.

5. The reinforced composite pipe of claim 2, wherein: the second plastic layer has a smooth inner wall.

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