CN110682561A - Manufacturing method of continuous fiber impregnated MPP (modified Polypropylene) coated composite pipe - Google Patents
Manufacturing method of continuous fiber impregnated MPP (modified Polypropylene) coated composite pipe Download PDFInfo
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- CN110682561A CN110682561A CN201910973359.XA CN201910973359A CN110682561A CN 110682561 A CN110682561 A CN 110682561A CN 201910973359 A CN201910973359 A CN 201910973359A CN 110682561 A CN110682561 A CN 110682561A
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- mpp
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- composite pipe
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- 239000000835 fiber Substances 0.000 title claims abstract description 106
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- -1 Polypropylene Polymers 0.000 title description 6
- 239000004743 Polypropylene Substances 0.000 title description 6
- 229920001155 polypropylene Polymers 0.000 title description 5
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000007822 coupling agent Substances 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000004806 packaging method and process Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000077 silane Inorganic materials 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 238000007598 dipping method Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims 1
- 239000004677 Nylon Substances 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 229920001778 nylon Polymers 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/523—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement in the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Laminated Bodies (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a method for manufacturing a continuous fiber impregnated MPP coated composite pipe, which comprises the following steps: impregnating continuous fibers in coupling agents such as silane and titanate, drying the impregnated materials after a certain temperature and time, and removing redundant solvents and moisture; then rolling and packaging the continuous fibers; then guiding the bunched continuous fibers into an extrusion die through a certain traction device, impregnating the bunched continuous fibers with the MPP modified material in the die, extruding the bunched continuous fibers into a pipe, and cooling and shaping the pipe; finally, cutting the pipe into the MPP composite pipe with the required size in a fixed length mode. The composite pipe material of the invention adopts the continuous fibers treated by the coupling agent to be used in bundles, effectively avoids fiber breakage caused by fiber splitting, is used in bundles, enhances the average tensile strength of the fibers, reduces the potential safety hazard caused by fiber breakage, can be uniformly impregnated and distributed on the pipe material to be enhanced to replace steel, nylon and other substances, and has the advantages of high tensile strength, long service life and recyclability.
Description
Technical Field
The invention relates to the technical field of composite pipe preparation, in particular to a manufacturing method of a continuous fiber dipping MPP coated composite pipe.
Background
The composite pipe is formed by using a metal and thermoplastic plastic composite structure as a base pipe and internally lining non-metallic materials such as plastic polypropylene, polyethylene or externally welding crosslinked polyethylene and the like, has the advantages of the metal pipe and the non-metallic pipe, and has the advantages of low average tensile strength of fibers, short service life and incapability of recycling due to fiber breakage caused by fiber splitting during the preparation of the conventional composite pipe.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides a method for manufacturing a continuous fiber impregnated MPP coated composite pipe, the manufactured composite pipe adopts continuous fibers treated by a coupling agent and is used in a bundle, the fiber breakage caused by fiber splitting is effectively avoided, the fiber bundle is used, the average tensile strength of the fibers is enhanced, the potential safety hazard caused by fiber breakage is reduced, the reinforced fibers can be uniformly impregnated and distributed on the pipe to be reinforced to replace steel, nylon and other substances, and the method has the advantages of high tensile strength, long service life and recyclability.
In order to achieve the purpose, the invention provides the following technical scheme: a manufacturing method of a continuous fiber dipping MPP coated composite pipe comprises the following steps:
s1, dipping and drying: soaking the continuous fiber in coupling agents such as silane, titanate and the like, and drying the soaked material after a certain temperature and time to remove redundant solvent and moisture;
s2, rolling and packaging: then rolling and packaging the continuous fibers;
s3, extrusion molding: guiding the bunched continuous fibers into an extrusion die through a certain traction device, impregnating the bunched continuous fibers with the MPP modified material in the die, extruding the fibers into a pipe, and cooling and shaping the pipe;
s4, fixed-length cutting: and cutting the pipe into the MPP composite pipe with the required size in a fixed length manner.
According to the technical scheme, the single package fiber of the continuous fiber is 10000 meters in 1000-10000 meters so as to be distinguished from short fiber and long fiber, and the gram weight of the single fiber bundle per kilometer is between 100 grams and 800 grams.
According to the above technical solution, the continuous fibers, the monofilament diameter of which is between 5 and 40 microns, are coated with a coupling agent for a period of between 3 and 60 minutes and at a temperature of between 30 and 100 ℃.
According to the technical scheme, the wall thickness of the MPP composite pipe is between 5mm and 50mm, and the outer diameter of the MPP composite pipe is between 50mm and 1000 mm.
According to the technical scheme, the continuous fiber bundles in the S3 are uniformly soaked in the MPP modified material along the pipe diameter, and the distance between the fiber bundles is 1-3 mm.
According to the technical scheme, the MPP modified material has the melt index of 0.1-20g, the thermal deformation temperature of not less than 150 ℃ and the elongation at break of 400-800%.
According to the technical scheme, the MPP composite pipe comprises an MPP modified material and continuous fibers, and the outer sides of the continuous fibers are coated with the MPP modified material.
The composite pipe material of the invention adopts the continuous fibers treated by the coupling agent to be used in bundles, effectively avoids fiber breakage caused by fiber splitting, is used in bundles, enhances the average tensile strength of the fibers, reduces the potential safety hazard caused by fiber breakage, can be uniformly impregnated and distributed on the pipe material to be enhanced to replace steel, nylon and other substances, and has the advantages of high tensile strength, long service life and recyclability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of the steps of the present invention.
Fig. 2 is a schematic structural view of the composite pipe of the present invention.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to fig. 1-2.
The embodiment is given by figure 1, and the invention provides a method for manufacturing a continuous fiber impregnated MPP coated composite pipe, which comprises the following steps:
s1, dipping and drying: soaking the continuous fiber in coupling agents such as silane, titanate and the like, and drying the soaked material after a certain temperature and time to remove redundant solvent and moisture;
s2, rolling and packaging: then rolling and packaging the continuous fibers;
s3, extrusion molding: guiding the bunched continuous fibers into an extrusion die through a certain traction device, impregnating the bunched continuous fibers with the MPP modified material in the die, extruding the fibers into a pipe, and cooling and shaping the pipe;
s4, fixed-length cutting: and cutting the pipe into the MPP composite pipe with the required size in a fixed length manner.
According to the technical scheme, the single package fiber of the continuous fiber is 10000 meters in 1000-10000 meters so as to be distinguished from short fiber and long fiber, and the gram weight of the single fiber bundle per kilometer is between 100 grams and 800 grams.
According to the above technical solution, the continuous fibers, the monofilament diameter of which is between 5 and 40 microns, are coated with a coupling agent for a period of between 3 and 60 minutes and at a temperature of between 30 and 100 ℃.
According to the technical scheme, the wall thickness of the MPP composite pipe is between 5mm and 50mm, and the outer diameter of the MPP composite pipe is between 50mm and 1000 mm.
According to the technical scheme, the continuous fiber bundles in the S3 are uniformly soaked in the MPP modified material along the pipe diameter, and the distance between the fiber bundles is 1-3 mm.
According to the technical scheme, the MPP modified material has the melt index of 0.1-20g, the thermal deformation temperature of not less than 150 ℃ and the elongation at break of 400-800%.
According to above-mentioned technical scheme, MPP composite pipe includes MPP modified material 1 and continuous fibers 2, and continuous fibers 2's the outside cladding has MPP modified material 1.
The invention firstly flattens the fiber, soaks in a soakage tank for several minutes at a certain temperature to ensure that the fiber and a coupling agent are fully soaked and reacted, grafting or coupling, the fiber is treated and wound, the wound fiber is placed on a spindle of plastic fiber extrusion compounding equipment, 20-200 fiber placing spindles are arranged according to the difference of the inner diameter and the outer diameter of a pipe, the fiber is unfolded one by one, the fiber is dragged through an extrusion pipe mould after being unfolded, a circle is uniformly distributed in the radial direction of the pipe mould, the distance between each bundle is 1-3mm, the fiber bundles are ensured not to be broken, turned over and uniformly spaced through a limiting device, an MPP plastic extruder is arranged at the position vertical to the fiber unfolding and stretching direction, the extruder is started to extrude molten plastic into the mould, the molten plastic can soak the continuous fiber and coat the continuous fiber, the MPP pipe coated with the continuous fiber is drafted through cooling and shaping, finally, the MPP-coated continuous fiber composite pipe is cut into an MPP-coated continuous fiber composite pipe in a fixed length mode, the continuous fiber refers to fibers which are continuously rolled, each roll is several kilometers in length and good in rigidity and flexibility, the fibers comprise inorganic fibers, carbon fibers and aramid fibers, the MPP refers to modified polypropylene materials, polypropylene is called PP for short, and the MPP plastic pipe is widely used in the trenchless power and communication industries. Besides high requirements for ring stiffness and toughness, the MPP pipe has high requirements for tensile strength due to the dragging pipe, and as is well known, the tensile strength of the fiber can reach 600-800MPa which is more than 20 times of the MPP, so that the wall thickness of the pipe can be reduced by adding the continuous fiber into the MPP, the tensile strength of the MPP pipe is increased, the effects of saving materials, increasing economic benefits and enhancing performance are achieved, and the waste material of the product can be crushed and added into new materials in proportion for recycling. Is an environment-friendly recyclable composite material.
The composite pipe material of the invention adopts the continuous fibers treated by the coupling agent to be used in bundles, effectively avoids fiber breakage caused by fiber splitting, is used in bundles, enhances the average tensile strength of the fibers, reduces the potential safety hazard caused by fiber breakage, can be uniformly impregnated and distributed on the pipe material to be enhanced to replace steel, nylon and other substances, and has the advantages of high tensile strength, long service life and recyclability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A manufacturing method of a continuous fiber dipping MPP coated composite pipe is characterized by comprising the following steps:
s1, dipping and drying: soaking the continuous fiber in coupling agents such as silane, titanate and the like, and drying the soaked material after a certain temperature and time to remove redundant solvent and moisture;
s2, rolling and packaging: then rolling and packaging the continuous fibers;
s3, extrusion molding: guiding the bunched continuous fibers into an extrusion die through a certain traction device, impregnating the bunched continuous fibers with the MPP modified material in the die, extruding the fibers into a pipe, and cooling and shaping the pipe;
s4, fixed-length cutting: and cutting the pipe into the MPP composite pipe with the required size in a fixed length manner.
2. The method as set forth in claim 1, wherein the continuous fiber is wrapped with 1000-10000 m of single fiber to be distinguished from short fiber and long fiber, and the single fiber has a grammage of 100-800 g/km.
3. The method as set forth in claim 1, wherein the continuous fibers having filament diameters of between 5 and 40 microns are coated with a coupling agent for a period of between 3 and 60 minutes at a temperature of between 30 ℃ and 100 ℃.
4. The method as set forth in claim 1, wherein the MPP composite tube has a wall thickness of between 5mm and 50mm and an outer diameter of between 50mm and 1000 mm.
5. The method for manufacturing the MPP coated composite pipe material by continuous fiber impregnation according to claim 1, wherein the continuous fiber bundles in S3 are uniformly impregnated in the MPP modified material along the pipe diameter, and the distance between the fiber bundles is 1-3 mm.
6. The manufacturing method of the continuous fiber impregnated MPP coated composite pipe as claimed in claim 5, wherein the MPP modified material has a melt index of 0.1-20g, a thermal deformation temperature of not less than 150 ℃, and an elongation at break of 400-800%.
7. The manufacturing method of the continuous fiber impregnated MPP coated composite pipe as set forth in claim 1, wherein the MPP composite pipe comprises MPP modified material and continuous fiber, and the outer side of the continuous fiber is coated with the MPP modified material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910973359.XA CN110682561A (en) | 2019-10-14 | 2019-10-14 | Manufacturing method of continuous fiber impregnated MPP (modified Polypropylene) coated composite pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910973359.XA CN110682561A (en) | 2019-10-14 | 2019-10-14 | Manufacturing method of continuous fiber impregnated MPP (modified Polypropylene) coated composite pipe |
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| CN110682561A true CN110682561A (en) | 2020-01-14 |
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2019
- 2019-10-14 CN CN201910973359.XA patent/CN110682561A/en active Pending
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Application publication date: 20200114 |
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