CN112127346A - Carbon fiber-based geogrid complex and manufacturing method thereof - Google Patents

Carbon fiber-based geogrid complex and manufacturing method thereof Download PDF

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Publication number
CN112127346A
CN112127346A CN202011109786.2A CN202011109786A CN112127346A CN 112127346 A CN112127346 A CN 112127346A CN 202011109786 A CN202011109786 A CN 202011109786A CN 112127346 A CN112127346 A CN 112127346A
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China
Prior art keywords
carbon fiber
geogrid
polypropylene filament
filament spun
fiber
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Inventor
梁训美
陆诗德
王继法
李克朋
满续文
于花
王景红
赵文洁
董霏
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Shandong Road Engineering Materials Co ltd
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Shandong Road Engineering Materials Co ltd
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Priority to CN202011109786.2A priority Critical patent/CN112127346A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/16—Reinforcements
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00—Foundations for pavings
    • E01C3/04—Foundations produced by soil stabilisation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0084—Geogrids
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0085—Geotextiles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0085—Geotextiles
    • E02D2300/0087—Geotextiles woven

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Abstract

The invention relates to a carbon fiber-based geogrid composite and a manufacturing method thereof, wherein the carbon fiber-based geogrid composite comprises an upper polypropylene filament spun-bonded geotextile, a carbon fiber geogrid and a lower polypropylene filament spun-bonded geotextile which are sequentially arranged from top to bottom, and the upper polypropylene filament spun-bonded geotextile, the carbon fiber geogrid and the lower polypropylene filament spun-bonded geotextile are integrally fixed through bonding. According to the invention, the carbon fiber geogrid and the polypropylene filament spun-bonded geotextile are compounded, so that the synthetic body has the advantages of the carbon fiber geogrid and the polypropylene filament spun-bonded geotextile, the carbon fiber geogrid and the polypropylene filament spun-bonded geotextile have very low elongation and high tensile strength, stress concentration at a joint or a crack of a road surface can be effectively eliminated, the expansion and upward reflection of the crack in the road surface are reduced, and the generation of a reflection crack is delayed.

Description

Carbon fiber-based geogrid complex and manufacturing method thereof
Technical Field
The invention relates to the technical field of geotechnical materials, in particular to a geosynthetic material for infrastructure construction, and specifically relates to a carbon fiber-based geogrid complex and a manufacturing method thereof.
Background
Geogrids and geotextiles are common geotechnical materials and are widely applied to the fields of road surfaces, road beds, dam revetments and the like. Chinese patent publication No. CN 206570632U discloses a glass fiber composite grid in 2017, 10 and 20, which is technically characterized in that: the utility model provides a glass fiber composite grid, through design transformation on the basis of original glass fiber grid, through add frame, connecting piece on the grid body, improve grid concatenation and fixed efficiency and stability, through the inner structure who reforms transform the check strip and be provided with the non-woven fabrics layer in grid body upper end, the tearing resistance of reinforcing grid, holistic intensity and its filtering quality further improve its life. The glass fiber composite grid comprises a grid body formed by vertically weaving lattice strips, wherein the lattice strips sequentially comprise a glass fiber woven layer, an anticorrosive layer, an anti-tearing layer and a covering layer from inside to outside. The glass fiber braided layer is arranged in the anti-corrosion layer, the reinforcing rib is arranged between the anti-corrosion layer and the anti-tearing layer, and the lower end of the reinforcing rib is connected with the glass fiber braided layer; the grid body is provided with air holes, the periphery of the grid body is provided with a frame, and a connecting piece is arranged at the intersection of the frame and the air holes.
The scheme of the patent enables the grid to have the advantages of two products at the same time through the compounding of the glass fiber and the geotextile, but the structure is complex, the compounding process is complex, and the improvement of the overall performance of the product is limited by the performance of the glass fiber and the geotextile which are composite materials.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the geogrid composite based on the carbon fiber, which has light weight, simple structure and composite process and easy manufacture.
The invention is realized through the following technical scheme, and provides a geogrid complex based on carbon fibers, which comprises an upper polypropylene filament spun-bonded geotextile, a carbon fiber geogrid and a lower polypropylene filament spun-bonded geotextile which are sequentially arranged from top to bottom, wherein the upper polypropylene filament spun-bonded geotextile, the carbon fiber geogrid and the lower polypropylene filament spun-bonded geotextile are integrally fixed through bonding.
The scheme adopts a structure of 'two-cloth-one-grid', two layers of polypropylene filament spun-bonded geotextile are combined with the carbon fiber geogrid, the characteristics of small specific gravity, high strength, high impact resistance and low elongation of the carbon fiber geogrid are utilized to improve the impact resistance and tensile strength of the whole complex, and meanwhile, the weight is reduced, and the elongation at break is reduced; the polypropylene filament spun-bonded geotextile is used for filtering and isolating to protect the internal carbon fiber grating, so that the integral tear resistance is improved, and the filtering effect is enhanced; the upper polypropylene filament spun-bonded geotextile, the carbon fiber geogrid and the lower polypropylene filament spun-bonded geotextile are fixed into a whole through bonding, so that the displacement among the upper polypropylene filament spun-bonded geotextile, the carbon fiber geogrid and the lower polypropylene filament spun-bonded geotextile is avoided.
As optimization, the carbon fiber geogrid comprises a plurality of transverse fiber belts and a plurality of vertical fiber belts which are woven together, two adjacent transverse fiber belts and two adjacent vertical fiber belts surround a grid hole, the transverse fiber belts comprise four transverse carbon fiber bundles which are parallel to each other, and a strip hole is formed between two adjacent transverse carbon fiber bundles in the same transverse fiber belt; the auxiliary membrane body is fixedly connected with the vertical fiber band, can be sewn and connected, and can also be bonded, the side, facing the strip hole, of the auxiliary membrane body is provided with air bubbles extending into the strip hole, and the height of the air bubbles is consistent with the thickness of the transverse carbon fiber bundle. The carbon fiber geogrid weaving process of the optimized scheme is simple, and the auxiliary membrane body is convenient to arrange by arranging the strip holes in the transverse fiber belts; the auxiliary membrane body of this optimization scheme has improved the kiss-coating ability of grid through setting up the bubble, for the firm bonding when follow-up pressfitting provides the assurance, the bubble is damaged by the pressure when the pressfitting to avoid influencing the bonding of grid and geotechnological cloth.
As optimization, the side face, far away from the strip hole, of the auxiliary membrane body is provided with a plurality of grooves, and the extending direction of the grooves is consistent with the extending direction of the vertical fiber strips. This optimization scheme has increased the supplementary membrane body and has kept away from the kiss-coating effect of the foraminiferous side of strip through setting up the recess to further guaranteed the bonding effect, set up the extending direction of recess into and erect fibre area extending direction unanimously, form the kiss-coating of two directions with the horizontal carbon fiber bundle of its both sides, further strengthen the kiss-coating effect.
Preferably, the vertical fiber belt comprises four parallel vertical carbon fiber bundles, and the four vertical carbon fiber bundles in the same vertical fiber belt are sequentially attached. This optimization scheme's setting is selecting supplementary diaphragm and is passing through the bonding when fixed with perpendicular fibrous zone, conveniently concentrates the daub on perpendicular fibrous zone and fixes supplementary diaphragm, has avoided because there is the colloid dispersion problem that the gap leads to between the perpendicular carbon fiber bundle.
The scheme also provides a manufacturing method of the geogrid complex, which comprises the following process flows of:
1. placing the carbon fiber geogrid with the auxiliary membrane body on a unreeling frame in a coiled mode, unreeling the carbon fiber geogrid under constant tension, and feeding the carbon fiber geogrid into a vertical kiln for primary drying after gluing through a sizing material groove;
2. the carbon fiber geogrid after preliminary drying enters a pressure-sensitive adhesive pool to be subjected to double-sided impregnation, then enters an open kiln to be dried and shaped, and the carbon fiber geogrid after being dried and shaped enters a cloth storage rack;
3. an upper unwinding frame and a lower unwinding frame are arranged behind a cloth storage frame, an upper polypropylene filament spun-bonded geotextile roll is placed on the upper unwinding frame, a lower polypropylene filament spun-bonded geotextile roll is placed on the lower unwinding frame, the upper unwinding frame and the lower unwinding frame are synchronously unwound, a carbon fiber geogrid pulled out of the cloth storage frame, the upper polypropylene filament spun-bonded geotextile and the lower polypropylene filament spun-bonded geotextile simultaneously enter a pressing roller set for pressing, bubbles are damaged by pressure in the pressing process, and the upper polypropylene filament spun-bonded geotextile and the lower polypropylene filament spun-bonded geotextile are respectively positioned on two sides of the carbon fiber geogrid;
4. and the complex formed after pressing is rolled by a rolling device.
Preferably, a compression roller set is arranged between the pressure-sensitive adhesive pool and the flat kiln and comprises a box body, an upper compression roller and a lower compression roller which are rotatably arranged in the box body, and a driving motor for driving the upper compression roller and the lower compression roller to rotate, a grid inlet is formed in the front side surface of the box body, a grid outlet is formed in the rear side surface of the box body, a carbon fiber geogrid enters the box body through the grid inlet and bypasses the bottom of the lower compression roller, then the carbon fiber geogrid penetrates through a grid channel between the upper compression roller and the lower compression roller, is wound on the top of the upper compression roller, and finally is led out. According to the optimized scheme, the compression roller group is arranged, so that tensioning of the grating is realized, certain power is provided for movement of the grating, and the grating is fed more stably; through the arrangement of the upper and lower press rollers, the colloid adhered to the carbon fiber geogrid after gum dipping is preliminarily leveled, the thickness uniformity of sizing materials on two sides of the carbon fiber geogrid is improved, and the quality of a complex is improved.
Preferably, the grid outlet is positioned at the same height as the top of the upper pressing roller. This optimization scheme sets up the grid export at same height with the top of last compression roller, and the carbon fiber geogrid level of being convenient for gets into the open kiln, makes the distance between carbon fiber geogrid and the upper and lower heating source unanimous, is favorable to improving the homogeneity of drying.
The invention has the beneficial effects that: the carbon fiber geogrid and the polypropylene filament spun-bonded geotextile are compounded, so that the synthetic body has the advantages of the carbon fiber geogrid and the polypropylene filament spun-bonded geotextile, the carbon fiber geogrid and the polypropylene filament spun-bonded geotextile have low elongation and high tensile strength, stress concentration at a joint or a crack of a road surface can be effectively eliminated, the expansion and upward reflection of the crack in the road surface are reduced, and the generation of a reflection crack is delayed.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic view of the construction of an apparatus for manufacturing the geogrid composite of the present invention;
FIG. 3 is a schematic structural diagram according to a second embodiment of the present invention;
shown in the figure:
1. upper polypropylene filament glues and glues geotechnological cloth, 2, carbon fiber geogrid, 3, lower floor's polypropylene filament glues and glues geotechnological cloth, 4, the frame is unreeled to the grid, 5, the shaft kiln, 6, glue silo, 7, pressure sensitive adhesive pond, 8, compression roller set, 9, the open kiln, 10, store up the cloth frame, 11, go up the frame of unreeling, 12, the pressfitting roller set, 13, transfer the frame, 14, a supporting bench, 15, rolling equipment.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Example one
As shown in fig. 1, the carbon fiber-based geogrid composite is manufactured by composite manufacturing equipment and has a structure of 'two-cloth one-grid', specifically, the carbon fiber-based geogrid composite comprises an upper polypropylene filament spun-bonded geotextile 1, a carbon fiber geogrid 2 and a lower polypropylene filament spun-bonded geotextile 3 which are sequentially arranged from top to bottom, and the upper polypropylene filament spun-bonded geotextile, the carbon fiber geogrid and the lower polypropylene filament spun-bonded geotextile are fixed into a whole by bonding.
The carbon fiber geogrid comprises a plurality of transverse fiber belts and a plurality of vertical fiber belts which are woven together, wherein two adjacent transverse fiber belts and two adjacent vertical fiber belts surround a grid hole, the vertical fiber belts comprise four vertical carbon fiber bundles which are parallel to each other, and the four vertical carbon fiber bundles in the same vertical fiber belt are sequentially attached; the horizontal fiber band comprises four parallel horizontal carbon fiber bundles, and a strip hole is formed between every two adjacent horizontal carbon fiber bundles in the same horizontal fiber band.
Still include the supplementary membrane body, supplementary membrane body and perpendicular fibrous zone rigid coupling are equipped with the bubble that extends in the strip foraminiferous hole on the supplementary membrane body towards the side in strip foraminiferous hole, and the height of bubble is unanimous with the thickness of horizontal carbon fiber bundle. The side face, far away from the strip hole, of the auxiliary membrane body is provided with a plurality of grooves, and the extending direction of the grooves is consistent with the extending direction of the vertical fiber strips.
Compared with the prior art, the composite body has the characteristics of simple structure, easy composite manufacturing, high tensile strength, low elongation, uniform longitudinal and transverse deformation, high tear strength, excellent wear resistance, high water permeability, strong reverse filtration property, no long-term creep property and excellent comprehensive performance.
As shown in fig. 2, the composite manufacturing equipment comprises a grid unwinding frame 4, a sizing material groove 6, a vertical kiln 5, a pressure sensitive adhesive pool 7, a flat kiln 9, a cloth storage frame 10, a press roller group 12 and a winding device 15 which are sequentially arranged along the conveying direction of the carbon fiber geogrid 2, wherein the winding device 15 is installed on a supporting platform 14, and the vertical kiln 5 is positioned above the sizing material groove. An upper unwinding frame 11 is arranged on one side of the pressing roller group 12 and used for unwinding an upper polypropylene filament spun-bonded geotextile roll, and an unwinding frame 13 is arranged on the other side and used for unwinding a lower polypropylene filament spun-bonded geotextile roll. The sizing material in the sizing material groove 6 comprises but is not limited to coating materials such as modified asphalt, PVC paste resin, chemical fiber glue and the like; the adhesive in the glue pool 7 includes, but is not limited to, pressure sensitive adhesives, hot melt adhesives, and latexes. The product of the invention has simple structure, easy implementation of the compounding process and good compounding effect.
Be provided with compression roller set 8 between pressure-sensitive adhesive pond and the open kiln, compression roller set includes the box and rotates last compression roller and the lower compression roller that sets up in the box to and drive compression roller and lower compression roller pivoted driving motor, the grid import has been seted up to the leading flank of box, the grid export has been seted up to the trailing flank of box, the grid export is located the same height with the top of last compression roller, carbon fiber geogrid gets into in the box through the grid import, and the bottom of compression roller down is walked around, then the compression roller top is gone up in the coiling after passing the grid passageway between last compression roller and the lower compression roller, is drawn forth through the grid export at last.
The manufacturing method of the geogrid composite comprises the following process flows:
s1, placing the carbon fiber geogrid provided with the auxiliary membrane body on a unreeling frame in a coiled mode, unreeling the carbon fiber geogrid under constant tension, and feeding the carbon fiber geogrid into a vertical kiln for primary drying after gluing through a glue material slot;
s2, enabling the carbon fiber geogrid subjected to primary drying to enter a pressure-sensitive adhesive pool for double-sided impregnation, then enabling the carbon fiber geogrid to enter an open kiln for drying and shaping, and enabling the carbon fiber geogrid subjected to drying and shaping to enter a cloth storage rack;
s3, arranging an upper unwinding frame and a lower unwinding frame behind a cloth storage frame, placing an upper polypropylene filament spun-bonded geotextile roll on the upper unwinding frame, placing a lower polypropylene filament spun-bonded geotextile roll on the lower unwinding frame, synchronously unwinding the upper unwinding frame and the lower unwinding frame, simultaneously feeding a carbon fiber geogrid pulled out of the cloth storage frame, the upper polypropylene filament spun-bonded geotextile and the lower polypropylene filament spun-bonded geotextile into a pressing roller set for pressing, wherein bubbles are damaged by compression in the pressing process, and the upper polypropylene filament spun-bonded geotextile and the lower polypropylene filament spun-bonded geotextile are respectively positioned on two sides of the carbon fiber geogrid;
and S4, rolling the composite body formed after pressing by a rolling device.
Example two
The difference between the embodiment and the first embodiment is that the geogrid composite body of the embodiment is in a structure of one cloth and one grid, and the polypropylene filament spun-bonded geotextile is arranged on the bottom surface of the carbon fiber geogrid 2, so that the structure is further simplified, and the geogrid composite body is suitable for being used in occasions with lower requirements so as to save cost.
Carbon Fiber is a novel high-strength high-modulus Fiber material with Carbon content of more than 90 percent, and is a novel material with excellent comprehensive performance. Has the advantages of high strength, good heat resistance, good thermal shock resistance, low thermal expansion coefficient, small thermal capacity, small specific gravity, good corrosion resistance and radiation resistance, good creep resistance, long service life and the like. The geogrid made of the carbon fibers has the characteristics of high tensile strength, low elongation at break, good creep resistance, acid resistance, alkali resistance, ultraviolet aging resistance and the like.
The polypropylene filament spun-bonded geotextile is a water-permeable geosynthetic material which is formed by spinning, drafting, lapping and needling reinforcement of a polypropylene raw material, and has the functions of isolation, reverse filtration, drainage, protection, stabilization, reinforcement and the like. The fiber is arranged into a three-dimensional structure, has good water permeability, is corrosion-resistant and ageing-resistant, can adapt to uneven base layers, can resist external construction damage and creep, can still keep the original function under long-term load, has excellent mechanical function, and is an excellent geotechnical reinforcing material.
According to the invention, the carbon fiber geogrid is compounded with the polypropylene filament spun-bonded geotextile to form the complex, so that the complex has very low elongation and high tensile strength, stress concentration at a pavement joint or a crack can be effectively eliminated, the expansion and upward reflection of the crack in the pavement are reduced, and the generation of a reflection crack is delayed. After being compounded with the asphalt mixture layer, the asphalt mixture layer can obviously improve the low-temperature shrinkage crack resistance, the high-temperature rut resistance, the fatigue crack resistance and the reflective crack delay, so the asphalt mixture layer can be used for reinforcing asphalt pavements, cement pavements and road beds, railway roadbed, dam slope protection, airport runways, sand prevention and control and the like, and can also be used for important engineering projects such as the earthquake resistance, the shear resistance, the bending resistance and the like of civil buildings, bridges, tunnels and concrete structures.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.

Claims (7)

1. A geogrid complex based on carbon fibers is characterized in that: the upper polypropylene filament spun-bonded geotextile, the carbon fiber geogrid and the lower polypropylene filament spun-bonded geotextile are sequentially arranged from top to bottom, and are fixed into a whole through bonding.
2. A carbon fiber-based geogrid composite according to claim 1, wherein: the carbon fiber geogrid comprises a plurality of transverse fiber belts and a plurality of vertical fiber belts which are woven together, two adjacent transverse fiber belts and two adjacent vertical fiber belts surround to form a grid hole, the transverse fiber belts comprise four transverse carbon fiber bundles which are parallel to each other, and a strip hole is formed between two adjacent transverse carbon fiber bundles in the same transverse fiber belt;
still include the supplementary membrane body, supplementary membrane body and perpendicular fibrous zone rigid coupling are equipped with the bubble that extends in the strip foraminiferous hole on the supplementary membrane body towards the side in strip foraminiferous hole, and the height of bubble is unanimous with the thickness of horizontal carbon fiber bundle.
3. A carbon fiber-based geogrid composite according to claim 2, wherein: the side face, far away from the strip hole, of the auxiliary membrane body is provided with a plurality of grooves, and the extending direction of the grooves is consistent with the extending direction of the vertical fiber strips.
4. A carbon fiber-based geogrid composite according to claim 2, wherein: the vertical fiber belt comprises four vertical carbon fiber bundles which are parallel to each other, and the four vertical carbon fiber bundles in the same vertical fiber belt are sequentially attached.
5. A method for manufacturing the geogrid composite body according to any one of claims 1 to 4, which is characterized by comprising the following process flows:
(1) placing the carbon fiber geogrid with the auxiliary membrane body on a unreeling frame in a coiled mode, unreeling the carbon fiber geogrid under constant tension, and feeding the carbon fiber geogrid into a vertical kiln for primary drying after gluing through a sizing material groove;
(2) the carbon fiber geogrid after preliminary drying enters a pressure-sensitive adhesive pool to be subjected to double-sided impregnation, then enters an open kiln to be dried and shaped, and the carbon fiber geogrid after being dried and shaped enters a cloth storage rack;
(3) an upper unwinding frame and a lower unwinding frame are arranged behind a cloth storage frame, an upper polypropylene filament spun-bonded geotextile roll is placed on the upper unwinding frame, a lower polypropylene filament spun-bonded geotextile roll is placed on the lower unwinding frame, the upper unwinding frame and the lower unwinding frame are synchronously unwound, a carbon fiber geogrid pulled out of the cloth storage frame, the upper polypropylene filament spun-bonded geotextile and the lower polypropylene filament spun-bonded geotextile simultaneously enter a pressing roller set for pressing, and the upper polypropylene filament spun-bonded geotextile and the lower polypropylene filament spun-bonded geotextile are respectively positioned on two sides of the carbon fiber geogrid;
(4) and the complex formed after pressing is rolled by a rolling device.
6. The method of manufacturing a geogrid composite according to claim 5, wherein: the pressure roller group is arranged between the pressure sensitive adhesive pool and the flat kiln and comprises a box body, an upper pressure roller and a lower pressure roller which are arranged in the box body in a rotating mode, and a driving motor which drives the upper pressure roller and the lower pressure roller to rotate.
7. The method of manufacturing a geogrid composite according to claim 6, wherein: the grid outlet and the top of the upper press roll are positioned at the same height.
CN202011109786.2A 2020-10-16 2020-10-16 Carbon fiber-based geogrid complex and manufacturing method thereof Pending CN112127346A (en)

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