CN103174127A - Warp-knitted polyester glass fiber three-dimensional slope protection soil fixation grating and preparation method thereof - Google Patents
Warp-knitted polyester glass fiber three-dimensional slope protection soil fixation grating and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a warp-knitted polyester glass fiber three-dimensional slope protection soil fixation grating and a preparation method thereof, and in particular relates to a multi-grid grating formed by weaving polyester fiber yarns and glass fiber yarns and a preparation method thereof. Transverse gratings of the grating are formed by arranging glass fiber yarns and polyester fiber yarns; longitudinal gratings of the grating are glass fiber yarns; joints of transverse gratings and longitudinal gratings of grids are bound by polyester wires; after the grating is heated, the glass fiber yarns of the transverse gratings of the grids are upwards bent and protruded from binding points on two sides to form a three-dimensional state of the grating; and a solidification layer formed by waterproof adhesive emulsion is arranged on the surface of the grating. The grating in the preparation method is easy in production and manufacture and high in efficiency; in a construction paving process, the stability of the length and the width of the grating is good; a large area of gratings are paved; the construction difficulty is low; the warp-knitted polyester glass fiber three-dimensional slope protection soil fixation grating is used on the surface of a slope body, and a slope fixing effect is good; and even if the grating is corroded by rainwater for a long time and is immersed in water, the grating still has enough strength.
Description
Technical field
The invention belongs to the water and soil conservation field, particularly a kind of through compiling solid native grid of the three-dimensional bank protection of polyester glass fibre and preparation method thereof.
Background technology
Along with the fast development of speedway and high-speed railway, the protection of protecting soil and vegetation on hillside, slope, road is more and more important.The exploitation of various mineral reserve if untimely protection can cause a lot of disasters such as landslide, mud-rock flow, causes very large loss to the country and people.
The soil property on hillside, slope, road, the quality that can become after the immersion of rainwater is soft.The domatic upper soft earth that fluffs after being soaked by rainwater, under the effect of sliding force and rain drop erosion power, as easy as rolling off a log downslide forms the landslide.Serious landslide can cause the interruption of road and the destruction of road.Grid is as a kind of novel earth working material, and kind is a lot, is of wide application.At high-speed railway, in the construction process of speedway, be used for the reinforcing of ground, play the effect of mild steel muscle, prevent subsiding of roadbed, the protection roadbed.The product of similar three-dimensional grate, roughly divided two kinds in the past.A kind of plastic grid chamber of crying take plastics as raw material, by plastic extruder, becomes ribbon with the plastics pultrusion, and then banded plastic tape being cut into length, to be about 1-2 rice long, is welded into one by one mesh with plastic welding machine, forms the lattice chambers.On the slope, soil is filled in the inside, lattice chamber, play the effect of bank protection and plantation vegetation.Another kind is the plastic optical fibre three dimensional network, that profit is take plastics as raw material equally, pass through plastic extruder, plastic extrusion is become fibrous, and plastic optical fibre carries out the random fibrous web-like that is tiled into, and then the plastic wire of fibrous web-like is sent into mould, grinding tool heats plastic fiber net, extruding forms well-regulated rough three-dimensional netted, forms the three-dimensional plastic net, plays the effect of solid soil in bank protection.
Producing the plastic grid chamber with plastic strip uses for many years.Its shortcoming: the one, to manufacture loaded down with trivial detailsly, efficient is low.At first to become plastic strip to plastics by plastic extruder, and then with plastic strip on request slices weld, welding is all adopted manual, so production efficiency is low; The 2nd, be not easy to construction.The one-tenth character chamber that welding is good is Pork-pieces junior unit, and every area only has several square metres, in large slope protection construction, want a piece docking, construction trouble not only in docking operation, and the brute force of joint can be greatly affected, thus the brute force of whole bank protection slope body affected; The 3rd, plastics (generally adopting polypropylene or the polyethylene) time itself has been grown, and its brute force has obvious decline, thereby causes the brute force of whole bank protection slope body to descend; The 4th, the plastic grid chamber is the net structure that plastic tape is welded, and the width of plastic tape is exactly the height of lattice chamber.In its plane, do not have the yarn of vertical arrangement to play humidification, in the construction process of deployment, its length and width degree poor stability, bad assurance, large tracts of land is laid, and difficulty of construction is large; The 5th, cost of production is high.
Be exactly present three-dimensional plastic net, be also take plastics as raw material (polypropylene or polyethylene), the plastic filament of extruding by plastic extruder, through continuous random tiling, finally by crossing mould, hot rolling goes out rough hole shape, difficulty of processing is relatively simple, but network-like because of its knot formation, when bearing external pull, be easy to deform, when externally pulling force is larger, as easy as rolling off a log fracture can not provide short enough brute forces to soil and slope protection, easily causes domatic not firm.In addition, the three-dimensional plastic net is also to be raw material with polypropylene or polyethylene, and its ageing-resistant degree is poor, and the time is permanent, and powerful can obviously decline descends the brute force of bank protection slope body.
Summary of the invention
The objective of the invention is to consolidate native grid and preparation method thereof for the problems referred to above proposition is a kind of through compiling the three-dimensional bank protection of polyester glass fibre, grid is combined by alkali-free glass fiber yarn and high-strength polyester long filament and forms.
To achieve these goals, technical scheme of the present invention is:
A kind of through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, weave by polyester fibers and glass fiber yarn sound of laughing the grid in many ways that form, the horizontal grid of described grid are to be rearranged by glass fiber yarn and polyester fibers, vertical grid of described grid are glass fiber yarns, and the crossbar contact of the horizontal grid of grid and vertical grid is fixing with the polyester capillaries binding; Wherein, described grid is after heat treated, and the glass fiber yarn of the horizontal grid of described grid is bent upwards the three-dimensional state that convexes to form grid, the cured layer that the surface of described grid has the water-proof binding agent emulsion to form from both sides binding point.
Further, the glass fiber yarn of described vertical grid is one 800-2400tex alkali-free glass fibre yarn at least, described horizontal grid are one 300-500tex polyester fibers at least and are that one 800-2400tex alkali-free glass fibre yarn rearranges at least, and the glass fiber yarn of the horizontal grid of described grid is 2 centimetres to 4 centimetres from the height that both sides binding point is bent upwards projection.
Further, the horizontal grid of described grid be by one 300-500tex glass fiber yarn upper and one 800-2400tex polyester fibers under rearrange.
Further, the horizontal grid of described grid are comprised of in arranged on both sides at middle and two strands of 800-2400tex polyester fibers one 300-500tex glass fiber yarn.
Further, described water-proof binding agent emulsion is a kind of in PVC or PE or PU cementing agent emulsion.
Further, described grid is that horizontal grid and vertical grid are respectively the grids of 5-10 centimetre.
A kind of through compiling the solid native grid preparation method of the three-dimensional bank protection of polyester glass fibre, described method comprises that braider forms the grid of lattice in many ways with polyester fibers and glass fiber yarn braiding, the horizontal grid of described grid are to be rearranged by glass fiber yarn and polyester fibers, vertical grid of described grid are glass fiber yarns, wherein, the knot point of the horizontal grid of grid and vertical grid is fixing with the polyester capillaries binding; The grid that weaves is carried out the water-proof binding agent emulsion to be applied, the grid that is coated with the water-proof binding agent emulsion is sent into carried out pre-heating drying in vertical drying oven, when the polyester fibers of grid is subjected to thermal contraction 70% to 75%, grid is sent into the pyrocondensation of finalizing the design of horizontal baking oven process; Enter winder from horizontal baking oven grid out, wherein, the glass fiber yarn of the horizontal grid of grid grid is bent upwards from both sides binding point the three-dimensional state that convexes to form grid.
Further, the glass fiber yarn of described vertical grid is one 800-2400tex alkali-free glass fibre yarn at least, described horizontal grid are rearranged upper at lower and one 800-2400tex alkali-free glass fibre yarn by one 300-500tex polyester fibers, and perhaps the horizontal grid of described grid are comprised of in arranged on both sides at middle and two strands of 800-2400tex polyester fibers one 300-500tex glass fiber yarn.
Further, the temperature of carrying out pre-heating drying in described vertical drying oven is 115 ℃ to 125 ℃, and the time of pre-heating drying is 9 to 11 minutes.
Further, the described horizontal baking oven temperature that pyrocondensation processes of finalizing the design is 165 ℃ to 175 ℃, and the time that the typing pyrocondensation is processed is 5 to 7 minutes.
The present invention compared with prior art has following advantage: manufacture simply, efficient is high, in the construction process of deployment, and the length and width degree good stability of grid, the difficulty of construction that large tracts of land is laid is little; Through compiling the solid native grid use of the three-dimensional bank protection of polyester glass fibre on slope surface, Gu the slope is effective; Grid is subject to the erosion of rainwater for a long time, is immersed in water, and grid still can ensure enough brute forces, and therefore, the long-term ageing-resistant degree of using is high, the brute force that the time is permanent and make bank protection powerful descend little.
Below in conjunction with drawings and Examples, the present invention is made a detailed description.
Description of drawings
Fig. 1 is cell structure schematic diagram of the present invention;
Fig. 2 is grid preparation flow schematic diagram of the present invention;
Fig. 3 is horizontal baking oven working state schematic representation.
The specific embodiment
Embodiment 1:
A kind of through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, referring to Fig. 1, sound of laughing the grid 1 in many ways that the solid native grid of described three-dimensional bank protection is comprised of polyester fibers and glass fiber yarn braiding, the horizontal grid of described grid are to be rearranged by glass fiber yarn 1-1 and polyester fibers 1-2, vertical grid 1-3 of described grid is glass fiber yarn, and the crossbar contact 1-4 of the horizontal grid of grid and vertical grid is fixing with the polyester capillaries binding; Wherein, described grid is after heat treated, and the glass fiber yarn of the horizontal grid of described grid is bent upwards the three-dimensional state that convexes to form grid, the cured layer that the surface of described grid has the water-proof binding agent emulsion to form from both sides binding point; In embodiment refer to laterally that grid is laid on the ramp time and the direction of ramp transverse uniaxial.
In embodiment, the glass fiber yarn of described vertical grid is one 800-2400tex alkali-free glass fibre yarn at least, described horizontal grid are one 300-500tex polyester fibers at least and are that one 800-2400tex alkali-free glass fibre yarn rearranges at least, and the glass fiber yarn of the horizontal grid of described grid is 2 centimetres to 4 centimetres from the height that both sides binding point is bent upwards projection.
In embodiment, the horizontal grid of described grid be by one 300-500tex glass fiber yarn upper and one 800-2400tex polyester fibers under rearrange.
In embodiment, except above-mentioned permutation and combination, the horizontal grid of described grid are comprised of in arranged on both sides at middle and two strands of 800-2400tex polyester fibers one 300-500tex glass fiber yarn.
In embodiment, described water-proof binding agent emulsion is a kind of in PVC or PE or PU cementing agent emulsion.
In embodiment, described grid be horizontal grid and vertically grid be respectively the grid (be to determine according to the actual needs, its medium square is that horizontal grid are 10 centimetres, vertically grid are that the grid of 5 centimetres is the most often to use, and are also the schemes of best results) of 5-10 centimetre.
In embodiment, described polyester capillaries is the 250D polyester capillaries.
Below the specific descriptions of the present embodiment characteristics:
delete through compiling the solid native lattice of the three-dimensional bank protection of polyester glass fibre, take high-intensity polyphosphazene polymer ester fiber and high-intensity inorganic matter glass fiber as raw material, powerful big or small to grid according to construction party, the height of mesh size and three-dimensional projection, the designing requirements such as density of three-dimensional projection, with polyester fiber and glass fiber is regular is staggered (vertically is glass fiber, be laterally that two kinds of polyester fiber and glass fiber are arranged on request), pass through Warp Knitted Fabrics, use the 250D polyester filament, the high-strength polyester fibers yarn and the high-strength glass fibre yarn that arrange are bundled by root, form an integral body.Special anticorrosion, the waterproofing materials of outside coating, through high temperature thermal finalization, laterally high-strength polyester fibers under the effect of high temperature, shrinks gradually on request, makes horizontal glass fiber form well-regulated projection, forms 3 D stereo shape grid.According to client's construction requirement, can make 4 meters of width, the various sizes of length below 150 meters, convenient construction.Horizontal high-strength polyester fibers after pyrocondensation and vertical high-strength glass fibre, form the base cloth of vertical, horizontal vertical interlaced in three-dimensional planar, base cloth has guaranteed the longitudinal and transverse brute force of three-dimensional grate, thereby guaranteed the brute force of construction adverse grade body, the three-dimensional solid native grid of polyester glass fibre, compare with plastic grid chamber and the three-dimensional plastic net of original similar functions, raw material and processing technology are fully different, have that production efficiency is high, the rolling area is large, constructability, intensity dimensional stability are high, corrosion-resistant, ageing-resistant etc., incomparable advantage is arranged.
Through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, be mainly used in bank protection, the effect of play simultaneously solid soil, fixing the sand.Its maximum advantage is solid soil and the bank protection on the slopes such as hillside, Sha Po, Lu Po, Hu Po.This just requires grid: the first, must have enough brute forces and dimensional stability, to guarantee the stability of slope body; The second, grid must have enough large developed area, convenient construction; Three, grid must have good 3-D effect, and grid and slope body are meshed together, and when clamping down on rainwater weather, rainwater washes away slope body earth, plays the effect of the solid soil of bank protection; Four, grid must be corrosion-resistant, ageing-resistant, is subjected to for a long time water erosion unchanged, must waterproof.To these requirements of grid, first, on raw material are selected, vertically select high-strength alkali-free glass fiber yarn (800-2400tex), laterally select two kinds, high-strength polyester long filament (300-500tex) and high-strength alkali-free glass fiber yarn (800-2400tex).Two kinds of yarns are arranged by production engineering specifications.(thickness of yarn and arrangement mode, Tex-represents thickness of yarn; It is exactly 1tex that the long yarn of 1 km weighs 1 gram).When grid used at bank protection, it vertically can be than laterally bearing larger pulling force.Vertically select the high-strength fiber glass yarn, the one, can guarantee enough brute forces of vertical grid, the 2nd, can guarantee vertical grid size stability, because the glass Flexible change is very little.Laterally adopt the high-strength polyester yarn, the one, because the defeated macromolecular fibre of polyester fiber, the aging phenomena such as its brute force, water-fast, anti-daylight solarization are more much better than polyethylene, polypropylene fibre.The 2nd, utilize chemical fibre to have the characteristic of thermal contraction, when high temperature, polyester fiber shrinks in check scope, and transversely arranged glass fiber (glass is heated and does not shrink) is become lax, forms projection, forms three-dimensional structure.The three advantages that above-mentioned grid possesses.At first be that grid bears powerful requirement.The brute force of three-dimensional solid native grid is mainly the yarn that comes from vertical arrangement in the plane, is vertically glass fibre yarn, is laterally polyester yarn.Powerful size one is that the thickness by yarn itself is tex number (same yarn tex number is larger, and the expression yarn is thicker, and its breaking strength is higher), the 2nd, lean on the density of yarn arrays.The thickness of yarn and arranging density can affect the height (thickness of grid) of three-dimensional projection and the density of three-dimensional projection.Therefore, by the thickness of adjustment yarn and the density of yarn, both take into account, guarantee the brute force of grid, three-dimensional projection height, (density of three-dimensional yarn projection can affect the firm degree of solid soil to the thread density of three-dimensional projection, general mud particles is thinner, the density of three-dimensional projection can be larger, depending on the silt geological condition of slope body).The 3rd, pass through tricot machine, all vertical, transverse yarns (to be comprised the vertical base cloth yarn and the horizontal base portion yarn that play bearing tension in three-dimensional planar, and the solid native yarn of three-dimensional bossing) knot point, (D-represents fibre fineness with high-strength polyester filament 250D.9000 meters long heavy several grams are exactly several D), bundle one by one solid one-tenth as a whole, form the solid sun-dried mud brick cloth of the package polyester glass fibre three-dimensional grate bank protection of pressing production engineering specifications width and length.
The three-dimensional projection of grid, three-dimensional height namely, if too little, the embedded quantity of grid and sandy soil is inadequate, with sandy soil, good engagement can not be arranged, and does not just have the effect of solid soil.If three-dimensional is highly excessive, the one, the production and processing cost is high, and the 2nd, volume length can diminish, and is not easy to construction and long-distance transport, and the effect of solid soil is not varied widely.Therefore, through compiling the three-dimensional height of the solid native grid of the three-dimensional bank protection of polyester glass fibre, namely the thickness of grid, be typically chosen in below 4 centimeters.Three-dimensional grate is three-dimensional highly, three-dimensional density reaches with base cloth becomes organic one, and has controllability.
Through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, use on slope surface, grid surface covers one deck soil, so that the plantation vegetation.So grid will be subject to the erosion of rainwater for a long time, is immersed in water.In order to make grid ensure enough brute forces in permanent, powerful high except selecting, outside corrosion-resistant ageing-resistant raw material, also must carry out waterproofing work to grid, utilize PVC or the water-proof emulsions such as PE, PU to be coated in grid surface, in the process that the grid high-temperature heating is shunk, applicator is solidified, wrap up yam surface, reach the effect of grid waterproof.
Embodiment 2:
A kind of through compiling the solid native grid preparation method of the three-dimensional bank protection of polyester glass fibre, referring to Fig. 1, Fig. 2 and Fig. 3, described method is: at first by braider, polyester fibers and glass fiber yarn braiding are formed the grid of lattice in many ways, the horizontal grid of described grid are to be rearranged by glass fiber yarn and polyester fibers, vertical grid of described grid are glass fiber yarns, wherein, the knot point of the horizontal grid of grid and vertical grid is fixing with the polyester capillaries binding; The grid that weaves is rolled into tubular sends into post processing, tubular grid volume 2 is launched, at first send into water-proof binding agent emulsion groove 3 and carry out the coating of water-proof binding agent emulsion, the grid that is coated with the water-proof binding agent emulsion is sent into carried out pre-heating drying in vertical drying oven 4, when the polyester fibers of grid is subjected to thermal contraction 70% to 75%, grid is sent into the pyrocondensation of finalizing the design of horizontal baking oven 5 process; Enter winder 6 from horizontal baking oven grid out, wherein, the glass fiber yarn of the horizontal grid of grid grid is bent upwards from both sides binding point the three-dimensional state that convexes to form grid.
In embodiment, the glass fiber yarn of described vertical grid is one 800-2400tex alkali-free glass fibre yarn at least, described horizontal grid are rearranged upper at lower and one 800-2400tex alkali-free glass fibre yarn by one 300-500tex polyester fibers, and perhaps the horizontal grid of described grid are comprised of in arranged on both sides at middle and two strands of 800-2400tex polyester fibers one 300-500tex glass fiber yarn.
In embodiment, the temperature of carrying out pre-heating drying in described vertical drying oven be 115 ℃ to 125 ℃ (degree centigrade), during optimum temperature 120 ℃; The time of pre-heating drying is 9 to 11 minutes, and Best Times is 10 minutes.
In embodiment, described horizontal baking oven finalize the design temperature that pyrocondensation processes be 165 ℃ to 175 ℃ (degree centigrade), optimum temperature is 170 ℃; The time that the typing pyrocondensation is processed is 5 to 7 minutes, and Best Times is 6 minutes.
The present embodiment passes through tricot machine, all grids is vertical, transverse yarns (comprises the vertical base cloth yarn and the horizontal base portion yarn that play bearing tension in three-dimensional planar, and the solid native yarn of three-dimensional bossing) knot point, (D-represents fibre fineness with high-strength polyester filament 250D.9000 meters long heavy several grams are exactly several D), bundle one by one solid one-tenth as a whole, form the solid sun-dried mud brick cloth of the package polyester glass fibre three-dimensional grate bank protection of pressing production engineering specifications width and length.Then three-dimensional web-like grid grey cloth is carried out post processing processing.At first, grey cloth is carried out waterproof, anticorrosion, binding node bonding enhancing coating through water-proof binding agent emulsion soaking compartment.The grey cloth that has applied enters in vertical drying oven dries, and anticorrosion, the waterproof that applies, the moisture in the cementing agent emulsion is removed, and make it progressively to solidify, and posts at grid surface, by the effect of cementing agent, forms anticorrosion, the fish tail and waterproof layer of one deck densification.After the moisture of grid grey cloth evaporated, the grid grey cloth carried out hot preshrunk in vertical drying oven.Three-dimensional grate grey cloth after hot preshrunk out enters horizontal baking oven from vertical drying oven, carries out final pyrocondensation and processes.The crawler belt 7 with fixture is installed respectively in horizontal baking oven both sides, and the crawler belt horizontal reciprocating movement drives fixture 7-1 horizontal reciprocating and moves at horizontal baking oven.Distance between the fixture of both sides is the width that the three-dimensional grate finished product requires.Grey cloth after pre-pyrocondensation enters in horizontal baking oven, the fixture of both sides continuous motion in baking oven, and with the grey cloth clamping after pre-pyrocondensation, grid is with the horizontal movement in baking oven of fixture crawler belt.Temperature in baking oven, with the further pyrocondensation of the grey cloth after pre-pyrocondensation, tensioning in the middle of the fixture of both sides in baking oven, thus guaranteed uniformity and the uniformity of thermal contraction, also just formed the height of three-dimensional grate projection.According to the requirement of construction party to the height of three-dimensional grate projection, the width of the width of grid grey cloth and customer requirement finished product poor, be exactly total the pyrocondensation amount.The grid grey cloth is in setting up standby process, and the node of all yarns all bundles with polyester fine silk thread (250D) in length and breadth, in the pyrocondensation process, only has horizontal polyester fibers that the function of pyrocondensation is arranged.Vertically yarn is the high-strength fiber glass yarn, there is no the pyrocondensation function.At vertical glass fibre yarn tension force with under laterally by the effect of pyrocondensation yarn (polyester yarn) pyrocondensation power, laterally the glass fibre yarn projection, just forming uniform three-dimensional bulge-structure in the glass fibre yarn spacing longitudinally.The total pyrocondensation amount of the difference of grid grey cloth and finished product can be evenly distributed in two groups of vertical glass fibre yarn spacings, forms projection.Thereby guaranteed the make peace fabric width requirement of finished product of one of the three-dimensional height of projection of three-dimensional grate.
Embodiment is according to production engineering specifications, from raw-material selection, is the first step to the manufacturing of tricot machine, completes the processing of three-dimensional grate grey cloth.The processing of grey cloth must accurately be calculated the pre-allowance of pyrocondensation on the basis that guarantees the powerful and three-dimensional protruding yarn density of three-dimensional grate, with the height that guarantees three-dimensional protruding yarn within the scope of controlling.The grid grey cloth applies, dries, pre-pyrocondensation, controlledly heat that to be reduced to finished product be second step.By first and second liang of step work, complete whole through compiling the manufacturing of the solid native grid finished product of the three-dimensional bank protection of polyester glass fibre.
Through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, in manufacture process, adopt special raw material and special disposable the completing of processing technology.Base cloth plays the booster action to the slope body in bank protection; Three-dimensional projection plays fixation in the body of slope.Especially the effect meeting of bringing into play in the slope body of large-scale (area is large, the gradient is large) is larger.And plastic grid chamber in the past and three-dimensional plastic net all do not play the base cloth of booster action, even if need under special circumstances the slope body is strengthened, can only first lay the common grid of one deck yet, re-lay three-dimensional plastic net or plastic grid chamber.The one, cause that difficulty of construction is large, efficiency of construction is low; The 2nd, solid the reinforcement grid of native net and laying is not an integral body of combination on the structure, just can not fully play the effect of bank protection and solid soil.
Through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, structurally, vertically adopting per share is the high-strength fiber glass yarn of 800-2400tex, 1 to 3 strand of yarn is arranged side by side, between yarn arranged side by side and yarn, spacing is 5 to 10 centimeters vertical base fabric structure in plane that form the three-dimensional grate of grid, bears the effect of supporting domatic pulling force.Laterally grid except glass fiber yarn at upper, polyester fibers lower arrangement, can also adopt horizontal direction is 2 bursts of arrangements side by side of polyester yarn of glass fibre yarn one and the 300-500tex of 800-1200tex, wherein, polyester yarn is in the both sides of glass fibre yarn.By tricot machine, will be vertically, horizontal all knot points, utilize the high-strength polyester yarn binding of 150D to 250D firmly.Form the grey cloth of three-dimensional grate.Polyester fibers consists of horizontal base fabric structure in three-dimensional inner plane, bears the lateral pull of three-dimensional grate.Laterally glass fibre yarn in the pyrocondensation process of post processing, forms three-dimensional bulge-structure.So in the Practical manufacturing process of the design of product and grey cloth, the projection with base cloth and the three-dimensional grate of three-dimensional grate organically has been combined into an integral body, this is first step work.
Second step is placed in the three-dimensional lattice grey cloth of large package on uncoil-stand, and under the effect of rolling tractive force (hauling speed is generally at 4-6 m/min), grey cloth after vertical drying oven, horizontal baking oven, is pressed fixed length (construction party appointment) rolling through applying groove.Large package three-dimensional grate grey cloth, in applying groove after gluing, the surface is coated with water-fast cementing agent emulsion, enter vertical drying oven (26 meters of vertical drying oven height, in baking oven, temperature is controlled at 120 ℃ of left and right), the water-fast and cementing agent emulsion that the surface applies is progressively dried, is solidify to form the waterproof film of larger adhesion strength under the effect of hot blast.The run duration general control of grey cloth in vertical drying oven is about 10 minutes, enter front 5 minutes after baking oven, in order to evaporate the whole moisture in grey cloth, to go out baking oven front 5 minutes, grey cloth being carried out pre-pyrocondensation (pre-pyrocondensation amount accounts for 70% left and right of whole thermal shrinking quantity).The three-dimensional grate grey cloth of drying, pre-pyrocondensation, after going out vertical drying oven, by the fixture clamping on the horizontal baking oven import both sides (distance of fixture between horizontal baking oven both sides, the width of finalizing the design after controlled exactly pyrocondensation, the width of end product namely), enter horizontal baking oven under the clamping crawler belt and traction winding tension.The temperature of horizontal baking oven is 170 ° of left and right, 15 meters of length.Temperature in horizontal baking oven is than the high 50 ° of C of the temperature in vertical drying oven left and right, (grey cloth is long running time in baking oven to guarantee that sufficient temperature, time are arranged in horizontal baking oven, horizontal baking oven will be longer, floor space can be larger), make the three-dimensional grate grey cloth, in the scope that fixture is controlled, obtain abundant pyrocondensation, thereby guarantee the height of three-dimensional grate projection fiber, then finished product (every volume length is generally 50 meters or 100 meters, is provided by construction party) is provided in the fixed length rolling.
Through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, in the solid native process of different bank protections, for example the gradient of bank protection is big or small, the factors such as silt situation of geological condition and solid soil are different, requirement to the height of the intensity of grid, three-dimensional projection, density is different, so selected raw material thickness, the arrangement mode of yarn, radical is not identical when design.The solid soil of some requirement of engineering is effective, and the density of the protruding yarn of three-dimensional grate and height will suitably increase, and fineness of yarn can suitably reduce; Some requirement of engineering increases the brute force of slope body, so just the brute force of base cloth in needs enhancing three-dimensional grate plane; Powerful and solid soil has requirement to bank protection, will both take into account.Fully understanding on the basis of construction party to the three-dimensional grate engine request, carry out technological design, different engine requests, its processing technology is different.Technological design, raw-material selection is the basis of carrying out three-dimensional grate, tricot machine equipment and equipment for after-treatment are to guarantee that technique realizes, satisfies the key of product requirement.
Through the solid native grid of the three-dimensional bank protection of volume polyester glass fibre, most crucial flow process, the one, the selection of raw material (two kinds of yarns): the first is the fiber yarn that does not possess thermal contraction performance; The second be have thermal contraction performance fiber yarn (perhaps under same temperature, a kind of fiber has reached the temperature of thermal contraction and has shunk, do not shrink and another kind of fiber also reaches the temperature of thermal contraction), but the intensity of two kinds of fibers and ageing-resistant, decay resistance will be got well.The 2nd, the design of technique, possess the fiber yarn of thermal contraction condition and do not possess the arrangement mode of the fiber yarn of thermal contraction condition, the thickness of arrangement pitches and yarn etc., with the brute force of capable of meeting requirements on three-dimensional grid, the height of three-dimensional protruding fiber and the density of three-dimensional protruding fiber.
The present embodiment is through compiling the maximum characteristics of the solid native grid of the three-dimensional bank protection of polyester glass fibre, and (plane enhancing), also have three-dimensional fixation except the performance with common grid.So in the technological process of making, the one, the raw-material difference of selecting, adopt two kinds of fiber yarns that Thermal Contraction Coefficient differs greatly through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, its purpose is exactly in the last handling process of grey cloth, at a certain temperature, the yarn that Thermal Contraction Coefficient is large shrinks, and the little yarn of Thermal Contraction Coefficient does not shrink, make original yarn in same plane, through after pyrocondensation not in same plane, the yarn projection that the pyrocondensation coefficient is little, the three-dimensional structure of formation grid plays fixation.there is no the yarn of projection still in same plane, form the base fabric structure of three-dimensional grate, play forceful action, the 2nd, the layout of yarn is fully different on tricot machine, the brute force and the size of mesh opening that just provide by the client of common planar grille carry out arranging through weft yarn, and the yarn layout of the solid native grid of the three-dimensional bank protection of polyester glass fibre, except satisfying the powerful requirement of grid, also want the height of capable of meeting requirements on three-dimensional projection yarn and the density of three-dimensional protruding yarn, size of mesh opening of base cloth etc. in the three-dimensional grate plane, and to carry out arranging of yarn by accurate pyrocondensation amount, make last finished product reach powerful, three-dimensional height of projection, the density of three-dimensional protruding yarn, size of mesh opening, fabric width reaches the requirement of design and construction, the 3rd, the control of the horizontal baking oven of increase to product pyrocondensation amount, gripping by both sides fixture in horizontal baking oven, make the three-dimensional grate grey cloth of hot preshrunk under the gripping of fixture is controlled, the pyrocondensation amount that leaves when grey cloth is produced, obtain sufficient pyrocondensation, make the size of mesh opening of three-dimensional grate, three-dimensional height of projection reaches designing requirement.
The vertical yarn of the present embodiment adopts glass fibre yarn, and on yarn arrays, the distance between every two groups of yarns will be considered the pyrocondensation amount of horizontal polyester yarn, the i.e. height of three-dimensional grate projection.The whole pyrocondensation amount that leaves (pyrocondensation amount=grey cloth width-finished width), on average assign in the distance between every two groups of yarns, guarantee three-dimensional grate height of projection and protruding uniformity.Polyester glass fibre three-dimensional grate grey cloth, when vertical drying oven preshrunk has just entered horizontal baking oven, fixture grips grey cloth place relaxed state, in order to give the fiber yarn that is subjected to pyrocondensation, leave pyrocondensation space accurately, must pyrocondensation arrive the size that technological parameter requires, pyrocondensation large (because the fixture on both sides has been controlled extremely) can not occur, can not pyrocondensation (can suitably reduce speed if pyrocondensation is not in place, or improve hot blast temperature) not in place.
Claims (10)
1. consolidate native grid through compiling the three-dimensional bank protection of polyester glass fibre for one kind, it is characterized in that, sound of laughing the grid in many ways that the solid native grid of described bank protection is comprised of polyester fibers and glass fiber yarn braiding, the horizontal grid of described grid are to be rearranged by glass fiber yarn and polyester fibers, vertical grid of described grid are glass fiber yarns, and the crossbar contact of the horizontal grid of grid and vertical grid is fixing with the polyester capillaries binding; Wherein, the glass fiber yarn of the horizontal grid of described grid is bent upwards the three-dimensional state that convexes to form grid, the cured layer that the surface of described grid has the water-proof binding agent emulsion to form from both sides binding point.
2. according to claim 1 a kind of through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, it is characterized in that, the glass fiber yarn of described vertical grid is one 800-2400tex alkali-free glass fibre yarn at least, described horizontal grid are by being one 300-500tex polyester fibers at least and being that one 800-2400tex alkali-free glass fibre yarn rearranges at least, and the glass fiber yarn of the horizontal grid of described grid is 2 centimetres to 4 centimetres from the height that both sides binding point is bent upwards projection.
3. according to claim 2 a kind ofly it is characterized in that through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, the horizontal grid of described grid be by one 300-500tex glass fiber yarn upper and one 800-2400tex polyester fibers under rearrange.
4. according to claim 2 a kind ofly it is characterized in that through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, the horizontal grid of described grid are comprised of in arranged on both sides at middle and two strands of 800-2400tex polyester fibers one 300-500tex glass fiber yarn.
5. according to claim 1 a kind ofly it is characterized in that through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, described water-proof binding agent emulsion is a kind of in PVC or PE or PU cementing agent emulsion.
6. according to claim 1 a kind ofly it is characterized in that through compiling the solid native grid of the three-dimensional bank protection of polyester glass fibre, described grid be horizontal grid and vertically grid be respectively the grid of 5-10 centimetre.
7. consolidate native grid preparation method through compiling the three-dimensional bank protection of polyester glass fibre for one kind, it is characterized in that, described method is: braider forms the grid of lattice in many ways with polyester fibers and glass fiber yarn braiding, the horizontal grid of described grid are to be rearranged by glass fiber yarn and polyester fibers, vertical grid of described grid are glass fiber yarns, wherein, the knot point of the horizontal grid of grid and vertical grid is fixing with the polyester capillaries binding; The grid that weaves is carried out the water-proof binding agent emulsion to be applied, the grid that is coated with the water-proof binding agent emulsion is sent into carried out pre-heating drying in vertical drying oven, when the polyester fibers of grid is subjected to thermal contraction 70% to 75%, grid is sent into the pyrocondensation of finalizing the design of horizontal baking oven process; Enter winder from horizontal baking oven grid out, wherein, the glass fiber yarn of the horizontal grid of grid grid is bent upwards from both sides binding point the three-dimensional state that convexes to form grid.
8. according to claim 7 a kind of through compiling the solid native grid preparation method of the three-dimensional bank protection of polyester glass fibre, it is characterized in that, the glass fiber yarn of described vertical grid is one 800-2400tex alkali-free glass fibre yarn at least, described horizontal grid are rearranged upper at lower and one 800-2400tex alkali-free glass fibre yarn by one 300-500tex polyester fibers, and perhaps the horizontal grid of described grid are comprised of in arranged on both sides at middle and two strands of 800-2400tex polyester fibers one 300-500tex glass fiber yarn.
9. according to claim 7 a kind ofly it is characterized in that through compiling the solid native grid preparation method of the three-dimensional bank protection of polyester glass fibre, the temperature of carrying out pre-heating drying in described vertical drying oven is 115 ℃ to 125 ℃, and the time of pre-heating drying is 9 to 11 minutes.
10. according to claim 7 a kind ofly it is characterized in that through compiling the solid native grid preparation method of the three-dimensional bank protection of polyester glass fibre, the described horizontal baking oven temperature that pyrocondensation processes of finalizing the design is 165 ℃ to 175 ℃, and the time that the typing pyrocondensation is processed is 5 to 7 minutes.
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| CN109383053B (en) * | 2018-10-11 | 2021-01-26 | 安徽徽风新型合成材料有限公司 | High-toughness geogrid for culvert |
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