CN112497788A - Carbon glass composite FRP optical cable reinforced core and production method thereof - Google Patents
Carbon glass composite FRP optical cable reinforced core and production method thereof Download PDFInfo
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- CN112497788A CN112497788A CN202011257181.8A CN202011257181A CN112497788A CN 112497788 A CN112497788 A CN 112497788A CN 202011257181 A CN202011257181 A CN 202011257181A CN 112497788 A CN112497788 A CN 112497788A
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- 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
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
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- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
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- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
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- 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
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0075—Light guides, optical cables
Abstract
The invention discloses a carbon glass composite FRP optical cable reinforced core and a production method thereof, and the production method comprises the following steps: the carbon fibers and the glass fibers pass through the resin spraying area, and resin is sprayed on the carbon fibers and the glass fibers; carbon fibers and glass fibers penetrate through the resin soaking area along a preset track and are soaked in the ultraviolet curable resin, and the preset track is a broken line; the carbon fibers and the glass fibers are leached in the flash area to remove redundant resin on the surfaces of the carbon fibers and the glass fibers; the carbon fibers and the glass fibers penetrate through the forming area and are extruded into the carbon-glass composite material with a preset shape; the carbon glass composite material irradiates ultraviolet light in an ultraviolet curing system, and ultraviolet curable resin in the carbon glass composite material is cured to obtain the carbon glass composite FRP optical cable reinforcing core. The invention aims to reduce the breaking force of a product while ensuring enough modulus by utilizing a carbon fiber and glass fiber compounding mode. And a light-cured resin system is used, so that the production efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of production methods, in particular to a carbon glass composite FRP optical cable reinforced core and a production method thereof.
Background
At present, most optical cable products in the market improve the breaking force of the optical cable, but along with the development of the communication field, the application fields and application scenes of the optical cable are more and more, and some application scenes need to be broken in time at a specific moment due to the requirement of safety.
Disclosure of Invention
In order to solve the technical problems, the invention provides a carbon glass composite FRP optical cable reinforced core and a production method thereof.
According to one aspect of the application, a production method of a carbon glass composite FRP optical cable reinforced core is provided and is carried out in a composite FRP optical cable reinforced core production line, wherein the composite FRP optical cable reinforced core production line comprises a gum dipping system, an ultraviolet curing system and a winding device; the gum dipping system comprises a resin spraying area, a resin soaking area, a flash area and a forming area which are sequentially arranged along the direction of the production line; the resin infiltration area is filled with ultraviolet curable resin; the method comprises the following steps: (1) the carbon fibers and the glass fibers penetrate through the resin spraying area, resin is sprayed to the carbon fibers and the glass fibers by the resin spraying area, and the resin is sprayed to the surfaces of the carbon fibers and the glass fibers and permeates into the fibers; (2) the carbon fibers and the glass fibers penetrate through the resin infiltration area along a preset track and are infiltrated in the ultraviolet curable resin, and the preset track of the carbon fibers and the glass fibers penetrating through the resin infiltration area is a broken line; (3) the carbon fibers and the glass fibers pass through the flash area along the flash area, and redundant resin on the surfaces of the carbon fibers and the glass fibers is drained in the flash area; (4) the carbon fibers and the glass fibers pass through the molding area and are extruded into the carbon-glass composite material with a preset shape; (5) the carbon glass composite material penetrates through the ultraviolet curing system, ultraviolet light is irradiated in the ultraviolet curing system, and ultraviolet curable resin in the carbon glass composite material is cured to obtain the carbon glass composite FRP optical cable reinforcing core.
Optionally, a plurality of rows of fiber guide roller sets perpendicular to the fiber advancing direction are arranged in the resin infiltration area, each fiber guide roller set comprises a plurality of horizontally arranged fiber guide rollers, adjacent fiber guide rollers are spaced at a preset distance, and the arrangement heights of the adjacent fiber guide roller sets are the same or different; in step (2), carbon fibers and glass fibers enter the resin impregnation zone and sequentially pass through a plurality of rows of fiber guide roller sets.
Optionally, the step (2) specifically includes: the carbon fibers and the glass fibers enter a resin impregnation area of an impregnation system, pass through a plurality of fiber guide roller sets with gradually reduced heights, then pass through a plurality of fiber guide roller sets with the same height, and finally pass through a plurality of fiber guide roller sets with gradually increased heights; the predetermined trajectory of the carbon and glass fibers through the resin impregnation zone comprises, in sequence, a first path progressively downward in the direction of travel of the fibers, a second path progressively horizontal in the direction of travel of the fibers, and a third path progressively upward in the direction of travel of the second path.
Optionally, a plurality of nozzles are uniformly arranged at the bottom of the resin spraying area; the step (1) further comprises the following steps: carbon fibers and glass fibers enter a resin spraying area, and a plurality of nozzles spray resin to the carbon fibers and the glass fibers from bottom to top; wherein, the resin sprayed by the resin spraying area is the same as the resin in the resin wetting area.
Optionally, a flash area of the dipping system is provided with a plurality of grid plates perpendicular to the fiber advancing direction, and the grid plates comprise a plurality of rows of grids which are horizontally arranged; in the step (3), the carbon fibers and the glass fibers pass through the grids of the grid plates in the flash area, and excess resin on the surfaces of the carbon fibers and the glass fibers is removed.
Optionally, the molding zone is provided with a pultrusion die, the pultrusion die comprises a first cavity and a second cavity with a predetermined cross section along the fiber advancing direction, and the size of the second cavity is smaller than that of the first cavity; in the step (4), the carbon fibers and the glass fibers enter the molding area and sequentially pass through the first cavity and the second cavity of the pultrusion die to be extruded into the carbon-glass composite material with the section in the preset shape.
Optionally, the production line further comprises a creel arranged before the impregnation system; the creel comprises a plurality of yarn lattices used for placing fiber rolling materials and a plurality of tension adjusting mechanisms respectively arranged corresponding to the yarn lattices, and the tension adjusting mechanisms are used for adjusting the tension of the fibers conveyed out of the yarn lattices; step (1) is also preceded by step a): one end of carbon fiber and glass fiber which are arranged on a creel according to a preset rule penetrates through a gum dipping system and an ultraviolet curing system of a composite FRP optical cable reinforced core production line and is connected to a winding device; the tension of the carbon fibers and the tension of the glass fibers are respectively adjusted through a plurality of tension adjusting mechanisms, the tension of the carbon fibers is adjusted to be in a first range, the tension of the glass fibers is adjusted to be in a second range, and the first range is larger than the second range; the winding device rotates the carbon fibers and the glass fibers at a preset speed to continuously enter a composite FRP optical cable reinforced core production line.
Optionally, the production line further comprises a heating system arranged between the creel and the impregnation system, wherein water vapor with a preset temperature flows in the heating system, and the conveying direction of the water vapor is opposite to the advancing direction of the carbon fibers and the glass fibers; step b) is also included between step 1): the carbon fibers and the glass fibers are driven to pass through the heating system, and enter the heating system to exchange heat with water vapor in the heating system in a convection manner, so that the surface temperature and humidity of the carbon fibers and the glass fibers are improved.
Optionally, the production line further comprises a cooling and shaping system arranged between the ultraviolet curing system and the coiling device, wherein cold water with a preset temperature flows in the cooling and shaping system, and the flowing direction of the cold water is opposite to the advancing direction of the carbon-glass composite FRP optical cable; step (6) is also included after step (5): and the carbon glass composite FRP optical cable reinforcing core enters the cooling and shaping system and is cooled by cold water in the cooling and shaping system in a convection manner.
As another aspect of the invention, the invention provides a carbon glass composite FRP optical cable reinforced core which is prepared by the production method.
The invention increases the tension of the carbon fiber by using a carbon fiber and glass fiber composite mode so as to improve the modulus of the optical cable reinforced core obtained by pultrusion.
According to the invention, the tension of the carbon fiber is greater than that of the glass fiber, the impregnation path is adjusted by improving the impregnation device so as to keep the tension of the carbon fiber and the glass fiber unchanged in the impregnation process, so that the tension of the carbon fiber and the glass fiber in the optical cable reinforced core obtained by pultrusion is different, the stress of each fiber is different, the breaking force of the carbon-glass composite FRP optical cable reinforced core is reduced, and the product breaking force is reduced while the product has enough high modulus.
The optical cable reinforced core is obtained by adopting ultraviolet curable resin to soak fibers and then quickly curing the fibers after being irradiated by ultraviolet light emitted by an ultraviolet curing system. The production method shortens the curing speed and greatly improves the production efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart showing a method for producing a reinforcing core for a carbon glass composite FRP cable according to an embodiment;
FIG. 2 is a flow chart of a method for producing a reinforced core of a carbon glass composite FRP cable according to an embodiment;
FIG. 3 is a schematic view of a production line for reinforcing cores of composite FRP cables in a specific embodiment;
FIG. 4 is a schematic illustration of the path of the fibers from the resin-wetted zone in an exemplary embodiment;
FIG. 5 is a schematic diagram of a gum dipping system in an embodiment;
FIG. 6 is a schematic view of a pultrusion die in a particular embodiment;
fig. 7 is a schematic structural view of a creel in an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that, in the embodiments and examples of the present application, the feature vectors may be arbitrarily combined with each other without conflict.
At present, most optical cable products in the market improve the breaking force of the optical cable, but along with the development of the communication field, the application fields and application scenes of the optical cable are more and more, and some application scenes need to be broken in time at a specific moment due to the requirement of safety.
The application provides a production method of a carbon-glass composite FRP optical cable reinforcing core, which utilizes a carbon fiber and glass fiber composite pultrusion mode to ensure that the breaking force of the reinforcing core is reduced while the sufficient modulus of the reinforcing core is ensured.
The production method of the carbon glass composite FRP optical cable reinforced core is carried out in a composite FRP optical cable reinforced core production line, wherein the composite FRP optical cable reinforced core production line comprises a gum dipping system, an ultraviolet curing system and a winding device; the gum dipping tank comprises a resin spraying area, a resin soaking area, a flash area and a forming area which are sequentially arranged along the production line direction; the resin impregnation area is filled with ultraviolet curable resin, the carbon fibers and the glass fibers are impregnated with the ultraviolet curable resin in the impregnation system and then are pultruded together with the ultraviolet curable resin to form the carbon-glass composite material, and the resin in the carbon-glass composite material is rapidly cured after being irradiated by ultraviolet light emitted by the ultraviolet curing system to obtain the optical cable reinforcing core. The production method shortens the curing speed and greatly improves the production efficiency.
The production method of the carbon glass composite FRP optical cable reinforced core is carried out in a composite FRP optical cable reinforced core production line, as shown in figures 3 and 4, the composite FRP optical cable reinforced core production line comprises a gum dipping system 30, an ultraviolet curing system 40 and a winding device 60; the impregnation system 30 comprises a resin spraying area 310, a resin soaking area 320, a flash area 330 and a molding area 340 which are sequentially arranged along the production line direction; the resin-impregnated region 320 contains an ultraviolet curable resin.
As shown in fig. 1, the method for producing the carbon glass composite FRP optical cable reinforced core of the present application includes the following steps:
s1 the carbon fibers and glass fibers pass through the resin spraying region 310, the resin spraying region 310 sprays resin to the carbon fibers and glass fibers, and the resin sprayed to the surfaces of the carbon fibers and glass fibers penetrates into the fibers.
S2 carbon fibers and glass fibers are impregnated in the ultraviolet curable resin through the resin-impregnated region 320 along a predetermined trajectory, which is a broken line.
S3 the carbon fibers and glass fibers pass through the flash area 330, and excess resin on the surfaces of the carbon fibers and glass fibers is drained off in the flash area 330.
S4 carbon fibers and glass fibers pass through the forming zone 340, and the carbon fibers and glass fibers are extruded through the forming zone 340 into a carbon glass composite material of a predetermined shape.
S5 the carbon glass composite material passes through the ultraviolet curing system 40, ultraviolet light is irradiated in the ultraviolet curing system 40, and ultraviolet curable resin in the carbon glass composite material is cured to obtain the carbon glass composite FRP optical cable reinforced core.
As an example, as shown in fig. 3 and 4, the composite FRP optical cable reinforced core production line includes a creel 10, a heating system 20, a dipping system 30, an ultraviolet curing system 40, a cooling and sizing system 50, and a winding device 60, which are arranged in sequence.
As shown in fig. 7, the creel 10 includes a plurality of yarn lattices 11 for placing the fiber roll and a plurality of tension adjusting mechanisms 12 respectively disposed corresponding to the plurality of yarn lattices 11, and the tension adjusting mechanisms 12 are configured to adjust the tension of the fiber conveyed from the yarn lattices 11. Preferably, a winding drum for winding the fibers is placed in each yarn lattice 11 of the yarn supply system 1, a yarn guide magnetic eye is arranged on one side of the yarn lattice 11 facing the pultrusion direction, the fibers on the winding drum pass through the yarn guide magnetic eye, and a tension adjusting mechanism 12 is arranged at each yarn guide magnetic eye outlet. The tension adjusting mechanism 12 includes a reed tensioner and a roller tensioner.
Water vapor of a predetermined temperature flows in the heating system 20, and the water vapor is transported in a direction opposite to the traveling direction of the carbon fibers and the glass fibers.
The impregnation system 30 comprises a resin spraying area 310, a resin soaking area 320, a flash area 330 and a molding area 340 which are sequentially arranged along the production line direction; the resin-impregnated region 320 contains an ultraviolet curable resin. The bottom of the resin spray area 310 is uniformly provided with a plurality of nozzles.
The resin infiltration area 320 is provided with a plurality of fiber guide roller groups 01 which are vertical to the fiber advancing direction, each fiber guide roller group 01 comprises a plurality of fiber guide rollers which are horizontally arranged, adjacent fiber guide rollers are spaced at a preset distance, and the arrangement heights of the adjacent fiber guide roller groups 01 are the same or different. The resin-impregnated region 320 contains an ultraviolet curable resin.
The overflow area 330 of the dipping system 30 is provided with a plurality of grid plates 02 perpendicular to the fiber advancing direction, and the grid plates 02 comprise a plurality of rows of grids horizontally arranged.
As shown in fig. 5 and 6, the forming area 340 is provided with a pultrusion die 03, and along the fiber traveling direction, the pultrusion die 03 comprises a first cavity 031 and a second cavity 032 with a predetermined cross section, and the size of the second cavity 032 is smaller than the size of the first cavity 031.
In the production line direction, the uv curing system 40 comprises a first light emitting unit 41 for emitting uv light of a first wavelength and a second light emitting unit 42 for emitting uv light of a second wavelength.
Cold water of a predetermined temperature flows in the cooling and setting system 50, and the flow direction of the cold water is opposite to the fiber traveling direction.
In this example, as shown in fig. 2, the method for producing the reinforced core of carbon glass composite FRP optical cable of the present application includes the following steps:
step a: one end of carbon fiber and glass fiber which are arranged on a creel 10 according to a preset rule passes through a heating system 20, a gum dipping system 30, an ultraviolet curing system 40 and a cooling and shaping system 50 of a production line and is connected to a coiling device 60, the tension of the carbon fiber and the glass fiber is respectively adjusted through a plurality of tension adjusting mechanisms 12, the tension of the carbon fiber is adjusted to a first range, the tension of the glass fiber is adjusted to a second range, and the first range is larger than the second range; the winding device 60 drives the carbon fibers and the glass fibers to continuously enter the production line of the reinforced core of the composite FRP optical cable at a preset speed.
Step b: carbon fibers and glass fibers pass through the heating system 20, the carbon fibers and the glass fibers enter the heating system 20 and exchange heat with water vapor in the heating system 20 in a convection manner, the temperature of the water vapor in the heating system 20 is 50-60 ℃, and in the process, the surface temperature and humidity of the carbon fibers and the glass fibers are improved, so that resin is sprayed on the surfaces of the carbon fibers and the glass fibers when the subsequent carbon fibers and glass fibers enter the resin spraying area 310 of the impregnation system 30, the carbon fibers and the glass fibers are tightly combined with the resin on the surfaces, the resin permeates into the fibers, and the permeation efficiency of the resin is improved.
Step S1 the carbon fibers and glass fibers enter the resin spray area 310 and several nozzles spray resin from bottom to top onto the carbon fibers and glass fibers. The resin spray area 310 sprays the same resin as the resin-impregnated area 320.
Step S2, the carbon fibers and the glass fibers enter the resin impregnation area 320 and sequentially pass through gaps between the fiber guide rollers of the fiber guide roller sets 01, the arrangement positions of the fiber guide roller sets 01 limit the traveling tracks of the carbon fibers and the glass fibers, and the traveling tracks of the carbon fibers and the glass fibers in the resin impregnation area 320 are zigzag. The carbon fibers and the glass fibers are fully soaked in the resin soaking area 320, the straightness of the carbon fibers and the glass fibers is maintained by walking along the broken line track, and the tension of the carbon fibers and the tension of the glass fibers are maintained, so that the tension of the carbon fibers is maintained in a first range, the tension of the glass fibers is maintained in a second range, the tension of the carbon fibers and the tension of the glass fibers in the FRP optical cable reinforcing core obtained by production are different, and the FRP optical cable reinforcing core has low breaking force.
S3 carbon fibers and glass fibers enter the flash area 330 and sequentially pass through the grid plates 02, the carbon fibers and the glass fibers pass through the grids of the grid plates 02, redundant resin on the surfaces of the carbon fibers and the glass fibers is removed, and meanwhile, bubbles in the resin are extruded out, so that the resin content in the FRP optical cable reinforced core obtained by production is reduced, and the bubbles are prevented from being present inside the FRP optical cable reinforced core after being cured.
S4 the carbon fibers and the glass fibers enter the forming area 340, and sequentially pass through the first cavity 031 and the second cavity 032 of the pultrusion die 03 to be extruded into the carbon glass composite material with the predetermined cross-section. The size of first cavity 031 is greater than the size of second cavity 032, can reduce the friction when reducing carbon fibre and glass fiber multistrand yarn and getting into pultrusion mould 03, effectively maintains fibrous complete degree, helps carbon fibre and glass fiber to pass smoothly from pultrusion mould 03 simultaneously.
S5 the carbon glass composite material enters the ultraviolet curing system 40 and passes through the first light emitting unit 41 and the second light emitting unit 42 in sequence, the carbon glass composite material is irradiated by ultraviolet light with the first wavelength and ultraviolet light with the second wavelength, and the ultraviolet curable resin in the carbon glass composite material is cured and firmly combined with the carbon fiber and the glass fiber to form the carbon glass composite FRP optical cable reinforcing core.
S6 convection of cold water entering the cooling and shaping system 50 and the cooling and shaping system 50 is carried out on the carbon glass composite FRP optical cable reinforcing core, the temperature of the cold water in the cooling and shaping system 50 is 4-8 ℃, the temperature of the carbon glass composite FRP optical cable reinforcing core is reduced, and the quenching and shaping of the carbon glass composite FRP optical cable reinforcing core solidified by ultraviolet light are beneficial to keeping the shape stability of the carbon glass composite FRP optical cable reinforcing core.
Preferably, in the step a, the tension of the carbon fibers is adjusted to a first range by adjusting the tension of the carbon fibers and the tension of the glass fibers respectively by the tension adjusting mechanism 12, so that the tension of each carbon fiber is in the first range and different; the tension of the glass fibers is adjusted to a second range, so that the tension of each glass fiber is in the second range and is different; under the condition, the tension of each fiber in the carbon-glass composite FRP optical cable reinforced core obtained by pultrusion is different, and the breaking force of the composite FRP optical cable reinforced core is the lowest.
As an example, as shown in fig. 4 and 5, the dipping system 30 is a dipping tank, and the dipping tank includes a tank body and a tank cover, and a resin spraying area 310, a resin soaking area 320, a flash area 330, and a molding area 340 are sequentially disposed in the tank body along the production line direction. A first threading plate 350 is arranged between the resin spraying area 310 and the resin soaking area 320, and a second threading plate 360 is arranged between the resin soaking area 320 and the flash area 330.
The first end wall 301 of the tank body is used for carbon fibers and glass fibers to enter the impregnation system 30; and the second end wall 302 of the groove body is used for penetrating out the reinforced core of the carbon glass composite FRP optical cable obtained by pultrusion. The first end wall 301 of the groove body, the first threading plate 350 and the second threading plate 360 are the same array hole plate.
Adjacent fiber guide rollers of the fiber guide roller group 01 of the resin impregnation zone 320 form a threading gap for a row of carbon fibers and/or glass fibers to pass through. The row number of the threading gaps of each group of the fiber guide roller group 01 is the same as that of the array holes of the second threading plate. The number of grids of the grid plate 02 in the flash area 330 is also the same as the number of rows of the array holes of the second threading plate.
Carbon fibers and glass fibers enter a resin spraying area 310 from a first end wall 301 of the tank body, enter a resin soaking area 320 through a first yarn threading plate 350 after resin is sprayed in the resin spraying area 310, the carbon fiber and glass fiber arrays penetrate through a plurality of groups of fiber guide roller sets 01 from yarn threading gaps formed by fiber guide rollers to be dipped in glue, then enter a flash area 330 from a second yarn threading plate 360, the carbon fiber and glass fiber arrays penetrate through grids of the grid plate 02, redundant resin on the surfaces of the fibers is drained, and the carbon fiber and glass fiber arrays penetrate through a second end wall 302 of the tank body after entering a forming area 340 and being pultruded.
Based on the above example, in a possible implementation manner, the second threading plate 360 is also an array hole plate, the arrangement of the threading holes of the second threading plate 360 is the same as and corresponds to the arrangement of the threading holes of the first threading plate 350, and the aperture of the threading holes of the second threading plate 360 is smaller than that of the threading holes of the first threading plate 350. Under this condition, when carbon fiber and glass fiber passed through second threading board 360, the fiber diameter of wearing out from the threading hole of second threading board 360 was restricted through the threading hole of second threading board 360, avoided carbon fiber and glass fiber surface resin too much to influence the product modulus of carbon glass composite FRP optical cable reinforcing core.
Based on the above example, in a possible implementation manner, along the production line direction, the resin spraying area 310 is provided with a plurality of groups of fiber guide roller sets 01 perpendicular to the fiber advancing direction, and the number of threading gaps formed by the fiber guide rollers of the fiber guide roller sets 01 is the same as the array hole row number of the second threading plate 360.
Preferably, the adjacent resin spraying areas 310 in the resin spraying area 310 are different in setting height, the adjacent grid plates 02 in the flash area 330 are different in setting height, the carbon fibers and the glass fibers enter the dipping system 30, the tracks passing through the resin spraying area 310, the resin dipping area 320 and the flash area 330 are broken lines, and the tension of the whole process of spraying resin, dipping resin and glue dripping of the carbon fibers and the glass fibers is kept, so that the carbon fibers and the glass fibers of the carbon-glass composite FRP optical cable reinforcing core obtained by pultrusion are different in tension, and the carbon-glass composite FRP optical cable reinforcing core has low breaking force.
Based on the above example, in a possible implementation manner, the resin infiltration zone 320 is provided with several rows of fiber guide roller sets 01 with gradually decreasing height, several rows of fiber guide roller sets 01 with the same height, and several rows of fiber guide roller sets 01 with gradually increasing height in sequence along the production line direction. The carbon fibers and the glass fibers enter a resin impregnation area 320 of the impregnation system 30, sequentially pass through a plurality of rows of fiber guide roller sets 01 with gradually-reduced heights, sequentially pass through a plurality of rows of fiber guide roller sets 01 with the same heights, and finally pass through a plurality of rows of fiber guide roller sets 01 with gradually-increased heights; the predetermined trajectory of the fibers and glass fibers through the resin impregnation zone 320 includes, in order, a first path that travels gradually downward in the direction of fiber travel, a second path that travels horizontally, and a third path that travels gradually upward along the second path.
Under the condition, each carbon fiber and each glass fiber can be ensured to be fully soaked with resin in the resin soaking area 320, the advancing path adjusts the tension of the carbon fibers and the glass fibers in advancing, the tension change of the carbon fibers and the glass fibers is avoided, the tension of each carbon fiber and each glass fiber is kept at the preset tension adjusted by the tension adjusting mechanism 12 of the creel 10, the tension of the carbon fibers subsequently entering the forming area 340 for pultrusion is in a first range, the tension of the glass fibers is in a second range, the carbon fibers and the glass fibers have tension difference, and the fiber tension in the reinforced core of the carbon-glass composite FRP optical cable obtained by pultrusion is different.
The tension of the fibers and the arrangement of the fibers influence the breaking force of the pultrusion material, the glass fibers are elastic linear bodies, the glass fibers obey Hooke's law before being broken, namely, the elongation and the tension are in direct proportion, the relation between the stress and the strain is basically a straight line, and no yield point exists.
This application adjusts the tension of every carbon fiber and every glass fiber respectively through tension adjustment mechanism 12 when carbon fiber and glass fiber are exported from creel 10, and adjust the gum dipping route of carbon fiber and glass fiber in resin infiltration zone 320, maintain carbon fiber and glass fiber's tension, make the carbon fiber tension in the compound FRP optical cable reinforced core that pultrusion obtained be greater than glass fiber, the power of breaching of optical cable reinforced core is lower, when the compound FRP optical cable reinforced core of carbon glass needs to break, exert less power to the optical cable reinforced core and make the minimum glass fiber fracture of tension in the optical cable reinforced core, continuously stretch the optical cable reinforced core, the fibre atress is inhomogeneous in the optical cable reinforced core and accelerate the continuation fracture of carbon fiber and glass fiber, make compound FRP optical cable reinforced core can the quick fracture.
As an example, as shown in fig. 6, the size of the first cavity 031 is gradually reduced from the first cavity 031 to the second cavity 032 of the pultrusion die 03 in the molding region 340, so as to reduce friction when the carbon fiber and glass fiber multi-strand yarns enter the pultrusion die 03, thereby effectively maintaining the integrity of the fibers.
As an example, a first pultrusion die, a second pultrusion die and a third pultrusion die are sequentially arranged in the molding area 340 along the production line direction. Along the production line direction, the second cavity of the first pultrusion die, the second cavity of the second pultrusion die and the second cavity of the third pultrusion die are the same in shape and sequentially reduced in size in equal proportion, the centers of the first pultrusion die, the second pultrusion die and the third pultrusion die are positioned on the same horizontal line, and carbon fibers and glass fibers horizontally and linearly advance in the molding area 340 and sequentially pass through the first pultrusion die, the second pultrusion die and the third pultrusion die to be extruded into the carbon-glass composite FRP optical cable reinforcing core with the preset shape. The number of the drawing dies 03 in the molding area 340 can be adjusted according to the requirements of the produced optical cable reinforcing core.
Based on the above example, in a possible implementation manner, in the forming area 340, a plurality of first pultrusion dies, a plurality of second pultrusion dies and a plurality of third pultrusion dies are arranged in sequence in a manner of corresponding to each other in a direction perpendicular to the fiber advancing direction. The carbon fibers and the glass fibers penetrating out of the flash area 340 enter a plurality of first pultrusion dies respectively according to a preset proportion and a preset arrangement sequence, and enter a second pultrusion die and a third pultrusion die for pultrusion, so that the production efficiency of the optical cable reinforced core is improved.
Based on the above example, in one possible implementation manner, the first light emitting unit 41 of the ultraviolet curing system 40 emits ultraviolet light with the wavelength of 320-. In step S5, the carbon-glass composite material enters the ultraviolet curing system 40, and the carbon-glass composite material is irradiated by ultraviolet light with wavelength of 320-. Adopt the ultraviolet curing resin of different wavelengths in this application, improve curing efficiency, guarantee the homogeneity of product solidification.
Based on the above example, a possible implementation manner of the production method of the present application may further include, after the step S6, the step S7: the surface of the carbon-glass composite FRP optical cable reinforced core is coated with EAA (Ethylene Acrylic Acid) hot melt adhesive, so that the friction force between the optical cable reinforced core and the optical cable sheath is increased, and the optical cable reinforced core is prevented from sliding in the using process.
As an example, the production method of the present application is performed under a constant temperature condition, and the temperature of the resin impregnated in the resin spraying area 310 and the resin impregnated area 320 of the impregnation system 30 is constant at 80-90 ℃, under which condition, the resin in the resin spraying area 310 and the resin impregnated area 320 has better fluidity, and the infiltration efficiency of the carbon fibers and the glass fibers can be improved.
The carbon glass composite FRP optical cable reinforcing core prepared by the application comprises glass fiber, carbon fiber and ultraviolet light curable resin, the tension of the glass fiber and the carbon fiber is reserved, the straightness accuracy of the glass fiber and the carbon fiber is uniform, the modulus of the carbon glass composite FRP optical cable reinforcing core can reach more than 50GPA, and the breaking force is lower than 1100 MPa. When improving the compound FRP optical cable of carbon glass and strengthening the core modulus, reduced the power of rupture of strengthening the core, the compound FRP optical cable of carbon glass strengthens the core and can be in the field that requires to be high mould low strength to the cable, and the optical cable can break fast when necessary.
The invention increases the tension of the carbon fiber by using a carbon fiber and glass fiber composite mode so as to improve the modulus of the optical cable reinforced core obtained by pultrusion.
According to the invention, the tension of the carbon fiber is greater than that of the glass fiber, the impregnation path is adjusted by improving the impregnation device so as to keep the tension of the carbon fiber and the glass fiber unchanged in the impregnation process, so that the tension of the carbon fiber and the glass fiber in the optical cable reinforced core obtained by pultrusion is different, the stress of each fiber is different, the breaking force of the carbon-glass composite FRP optical cable reinforced core is reduced, and the product breaking force is reduced while the product has enough high modulus.
The optical cable reinforced core is obtained by adopting ultraviolet curable resin to soak fibers and then quickly curing the fibers after being irradiated by ultraviolet light emitted by an ultraviolet curing system. The production method shortens the curing speed and greatly improves the production efficiency.
It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.
Claims (10)
1. The production method of the carbon glass composite FRP optical cable reinforced core is characterized by being carried out in a composite FRP optical cable reinforced core production line, wherein the composite FRP optical cable reinforced core production line comprises a gum dipping system (30), an ultraviolet curing system (40) and a winding device (60); the impregnation system (30) comprises a resin spraying area (310), a resin impregnation area (320), a flash area (330) and a forming area (340) which are sequentially arranged along the production line direction; the resin wetting area (310) contains ultraviolet curable resin; the method comprises the following steps:
(1) carbon fibers and glass fibers pass through the resin spraying area (310), the resin spraying area (310) sprays resin to the carbon fibers and the glass fibers, and the resin is sprayed to the surfaces of the carbon fibers and the glass fibers and penetrates into the fibers;
(2) carbon fibers and glass fibers are soaked in the ultraviolet-curable resin along a predetermined track passing through the resin soaking area (320), and the predetermined track of the carbon fibers and the glass fibers passing through the resin soaking area (320) is a broken line;
(3) carbon fibers and glass fibers pass through the flash area (330), and excess resin on the surfaces of the carbon fibers and the glass fibers is drained in the flash area (330);
(4) carbon fibers and glass fibers pass through the molding zone (340), and the carbon fibers and the glass fibers are extruded into a carbon-glass composite material with a preset shape through the molding zone (340);
(5) and the carbon glass composite material penetrates through the ultraviolet curing system (40), ultraviolet light is irradiated in the ultraviolet curing system (40), and the ultraviolet curable resin in the carbon glass composite material is cured to obtain the carbon glass composite FRP optical cable reinforced core.
2. The method for producing the carbon-glass composite FRP cable reinforcing core as claimed in claim 1, wherein a plurality of rows of fiber guide roller sets (01) perpendicular to the fiber advancing direction are provided in the resin impregnation zone (320), the fiber guide roller sets (01) comprise a plurality of horizontally arranged fiber guide rollers, adjacent fiber guide rollers are spaced apart by a predetermined distance, and the arrangement heights of adjacent fiber guide roller sets (01) are the same or different;
in the step (2), carbon fibers and glass fibers enter the resin impregnation area (320) and sequentially pass through the fiber guide roller groups (01) in a plurality of rows.
3. The method for producing the carbon-glass composite FRP cable reinforcing core as claimed in claim 2, wherein the step (2) specifically comprises: carbon fibers and glass fibers enter the resin impregnation area (320) of the impregnation system (30), firstly pass through a plurality of fiber guide roller groups (01) with gradually reduced height, then pass through a plurality of fiber guide roller groups (01) with the same height, and finally pass through a plurality of fiber guide roller groups (01) with gradually increased height;
the predetermined trajectory of the carbon and glass fibers through the resin impregnation zone (320) comprises, in sequence, a first path progressively downward along the direction of travel of the fibers, a second path progressively horizontal and a third path progressively upward along the second path.
4. The method for producing the carbon-glass composite FRP optical cable reinforcing core as claimed in claim 1, wherein a plurality of nozzles are uniformly arranged at the bottom of the resin spraying area (310);
the step (1) further comprises the following steps: carbon fibers and glass fibers enter the resin spraying area (310), and the plurality of nozzles spray resin to the carbon fibers and the glass fibers from bottom to top;
wherein the resin sprayed by the resin spraying area (310) is the same as the resin in the resin wetting area (320).
5. The method for producing the carbon-glass composite FRP cable reinforcing core as claimed in claim 1, wherein the flash area (330) of the dipping system (30) is provided with a plurality of grid plates (02) perpendicular to the fiber advancing direction, the grid plates (02) comprising a plurality of rows of grids horizontally arranged;
in the step (3), carbon fibers and glass fibers pass through the grids of the grid plate (02) in the flash area (330), and excess resin on the surfaces of the carbon fibers and the glass fibers is drained.
6. The method for producing the carbon-glass composite FRP cable reinforced core as claimed in claim 1, wherein the molding zone (340) is provided with a pultrusion die (03), the pultrusion die (03) comprises a first cavity (031) and a second cavity (032) with a predetermined cross section along the fiber traveling direction, and the size of the second cavity (032) is smaller than the size (031) of the first cavity;
in the step (4), carbon fibers and glass fibers enter the molding area (340) and sequentially pass through the first cavity (031) and the second cavity (032) of the pultrusion die (03) to be extruded into the carbon-glass composite material with the section in the preset shape.
7. The method for producing the carbon-glass composite FRP cable reinforcing core as claimed in claim 1, wherein the production line further comprises a creel (10) disposed before the dipping system (30); the creel (10) comprises a plurality of yarn lattices (11) for placing fiber rolling materials and a plurality of tension adjusting mechanisms (12) which are respectively arranged corresponding to the yarn lattices (11), wherein the tension adjusting mechanisms (12) are used for adjusting the tension of fibers conveyed out of the yarn lattices (11); step (1) is also preceded by step a): connecting one end of carbon fibers and glass fibers arranged on the creel (10) according to a preset rule to the winding device (60) through the impregnation system (30) and the ultraviolet curing system (40) of the composite FRP optical cable reinforced core production line;
the tension of the carbon fibers and the tension of the glass fibers are respectively adjusted through a plurality of tension adjusting mechanisms (12), the tension of the carbon fibers is adjusted to a first range, the tension of the glass fibers is adjusted to a second range, and the first range is larger than the second range;
the winding device (60) rotates the carbon fibers and the glass fibers at a preset speed to continuously enter the composite FRP optical cable reinforced core production line.
8. The production method of the carbon-glass composite FRP cable reinforcing core according to claim 7, wherein the production line further comprises a heating system (20) arranged between the creel (10) and the dipping system (30), wherein water vapor with a predetermined temperature flows in the heating system (20), and the conveying direction of the water vapor is opposite to the traveling direction of the carbon fibers and the glass fibers;
step b) is also included between step 1): the carbon fibers and the glass fibers are driven to pass through the heating system (20), and enter the heating system (20) to exchange heat with water vapor in the heating system (20) in a convection manner, so that the surface temperature and humidity of the carbon fibers and the glass fibers are improved.
9. The method for producing the carbon-glass composite FRP optical cable reinforcing core as claimed in claim 1, wherein the production line further comprises a cooling setting system (50) disposed between the ultraviolet curing system (40) and the winding device (60), wherein cold water of a predetermined temperature flows in the cooling setting system (50), and the flow direction of the cold water is opposite to the traveling direction of the carbon-glass composite FRP optical cable;
step (6) is also included after step (5): and the carbon glass composite FRP optical cable reinforcing core enters the cooling and shaping system (50) to be convectively cooled by cold water in the cooling and shaping system (50).
10. The carbon-glass composite FRP optical cable reinforced core is characterized by being prepared by the production method of any one of claims 1 to 9.
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| CN113334806A (en) * | 2021-07-06 | 2021-09-03 | 江苏德晴新材股份有限公司 | Pultrusion process of continuous ultrahigh-speed fiber reinforced composite material |
| CN113650324A (en) * | 2021-08-19 | 2021-11-16 | 江苏德晴新材股份有限公司 | Photocuring pultrusion system device |
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| CN115122694A (en) * | 2022-06-28 | 2022-09-30 | 郑州大学 | Production equipment and process of discontinuous hybrid fiber reinforced polymer rib |
| CN117283901A (en) * | 2023-09-28 | 2023-12-26 | 山东三泰非金属材料有限公司 | Gum dipping system for composite material pultrusion process |
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