CN106906710A - A kind of preparation method of pp geo textiles/GSZ composite geotextile material - Google Patents
A kind of preparation method of pp geo textiles/GSZ composite geotextile material Download PDFInfo
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- CN106906710A CN106906710A CN201710127610.1A CN201710127610A CN106906710A CN 106906710 A CN106906710 A CN 106906710A CN 201710127610 A CN201710127610 A CN 201710127610A CN 106906710 A CN106906710 A CN 106906710A
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- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
- D04H3/105—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by needling
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- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention provides a kind of preparation method of pp geo textiles/GSZ composite geotextile material, it is characterised in that including：Feed bin is poured into after the section of high fusion index isotactic polypropylene is uniformly mixed with age resister, cooling masterbatch, feeding screw extruder, after melting, extruding, filtering, metering, input spinning manifold, thread is sprayed by the spinneret of spinning manifold, cooled down through the cross air blasting of bilateral, tow after cooling carries out air drawing through slit extension apparatus again, after sub-wire, absorption is on lace curtaining, exported to needing machine through pony press, the filament web of formation obtains polypropylene spun-bonded needle-punched geotextiles after pre-needling, main pinprick reinforcement；Above-mentioned polypropylene spun-bonded needle-punched geotextiles are combined with each other with GSZ, you can obtain the pp geo textiles/GSZ composite geotextile material for being provided simultaneously with anti-filter and enhancing performance.Gained composite geotextile material has the advantages that tensile strength high, acid and alkali-resistance, corrosion-resistant, resistance to high and cold.
Description
Technical field
The invention belongs to composite earthwork cloth technical field, more particularly to a kind of pp geo textiles/GSZ composite earth
The preparation method of work material, high-strength thick denier polypropylene geotextiles are combined with each other with GSZ, are provided simultaneously with anti-filter and are added
Muscle humidification, is particularly suited for maintenance and the enhancing treatment of the engineerings such as highway, railway, airfield runway.
Background technology
Geotextiles/GSZ composite geotextile material is composited by high-strength pulling-resisting GSZ and non-woven geotextile
New geomaterial, the advantage of GSZ and geotextiles can be given full play to, further improve the performance of geotextiles, play
Filtering, draining, it is anti-blend enhancing reinforced action, extend the service life of geotextiles.Geotextiles/GSZ composite earthwork material
Material construction when, typically by geotextiles down with lower floor's roadbed close proximity, reduce difficulty of construction, durability is good, can use extensively
In the engineering constructions such as highway, railway, airfield runway.
It is early both at home and abroad to have been carried out substantial amounts of research for the application of geotextiles/GSZ composite geotextile material.Patent
201110417329.4 composite earthwork cloths for disclosing a kind of Fibergrass polyester mat and glass fiber grid cloth and preparation method thereof, by polyester
Glass-fiber-fabric and glass fiber grid are bonded together by binding agent, with good ultimate strength and extension at break, play reinforcement road
Face, the anti-effect for blending Anti-reflective Crack of Overlaying.Patent 201320279879.9 discloses a kind of plastic tensile GSZ, by
The GSZ surface coating gum of one-off drawing shaping, adhesion layer of glass fiber non-woven fabrics is obtained geotextiles/GSZ and is combined
Earth working material, the features such as with waterproof, anti-crack, it is adaptable to the ground construction project such as various highways, railway, harbour, overcomes
The application of traditional GSZ is not enough.Patent 201520380118.1 discloses a kind of based on the grid composite earthwork for keeping soil
, with polypropylene direction earthwork grille be combined with each other non-woven polyester geotextiles by melting pressing mode by cloth, is realized to mud
The holding effect of soil, while improve the intensity of ground.As can be seen here, at present to geotextiles/GSZ composite geotextile material
Application study still to concentrate on polyester non-woven fabric or polyester glass fibre non-woven fabrics compound with GSZ, but polyester, glass without
The alkaline resistance properties of spinning cloth is poor to limit its application, and a kind of acid-alkali-corrosive-resisting, tensile strength are high, long service life composite earthwork
Material urgently occurs.
Polypropylene spun bonding needling non-woven geotextiles are, with polypropylene as raw material, to be made through spun-bonded needle punched technique, are had
Light specific gravity, tensile strength are high, acid-alkali-corrosive-resisting, good penetrability the advantages of, can play preferable filtering, isolation, draining, antiseepage,
Enhancing and reinforcement effect, it is adaptable to underground acid and alkali-resistance environment and extremely frigid zones engineering construction.But polypropylene spun bonding acupuncture is non-
Weaving geotextiles ageing resistace is poor, and thick denier filament irregularity is higher, therefore the country lacks to polypropylene spun bonding pin always
The application study of non-woven geotextiles.In fact, the ageing-resistant performance of polypropylene spun bonding needling non-woven geotextiles and
Long filament irregularity can add age resister or cooling masterbatch and then improvement by spinning early stage, preceding with huge application
Scape.High-strength thick denier polypropylene spun-bond process needling non-woven geotextiles are combined with each other with GSZ, lifting earth working material is whole
While body tensile strength is with resistance to acids and bases, its filtering, isolation and antiseepage function are assigned.
The content of the invention
It is an object of the invention to provide a kind of preparation method of pp geo textiles/GSZ composite geotextile material.
The composite geotextile material prepared by the method has the advantages that tensile strength high, acid and alkali-resistance and long service life.
In order to achieve the above object, present invention employs following technical scheme：
A kind of preparation method of pp geo textiles/GSZ composite geotextile material, it is characterised in that including：
The first step：Material is poured into after the section of high fusion index isotactic polypropylene is uniformly mixed with age resister, cooling masterbatch
Storehouse, sends into screw extruder, after melting, extruding, filter, measure, is input into spinning manifold, by the spinneret ejection of spinning manifold
Thread, is cooled down through the cross air blasting of bilateral, and the tow after cooling carries out air drawing through slit extension apparatus again, from slit
α is impinged upon on sub-wire piece and oscillatory type pendulum wire plate extension apparatus tow out at a certain angle, reaches uniform sub-wire, and long filament is in net
Uniform adsorption is on lace curtaining in the presence of lower air draught, is exported to needing machine through pony press, the filament web of formation through pre-needling,
Polypropylene spun-bonded needle-punched geotextiles are obtained after main pinprick reinforcement；
Second step：Above-mentioned polypropylene spun-bonded needle-punched geotextiles are combined with each other with GSZ, you can obtain and have simultaneously
Standby anti-filter and the pp geo textiles/GSZ composite geotextile material for strengthening performance.
Preferably, the melt index of described isotactic polypropylene is 25~60g/10min, and weight average molecular weight is 15~35W.
Preferably, the age resister in the described first step is that benzophenone ultraviolet absorbent, hindered amines light are steady
Determine the compounding use of one or more in agent, antioxidant 1098 or irgasfos 168.
Preferably, the cooling masterbatch in the first step is A-490 type PP cooling masterbatch, the mass fraction of addition for 1~
4%.
Preferably, described slit extension apparatus is narrow slit extension apparatus, and slit width is 0.005~0.02m.
Preferably, the cooling cross air blasting wind speed in the first step is 1~2m/s, and temperature is 10~40 DEG C, is dried wet
Spend is 40~80%.
Preferably, drawing-off pressure used by the air drawing in the first step is 0.02~0.1MPa, and draft speed is
1000~3000m/min.
Preferably, the angle α between the tow out of the narrow slit extension apparatus in the first step and sub-wire piece is 30
~60 °.
Preferably, the amplitude of oscillation of the oscillatory type pendulum wire plate in the first step is 10~30 °, and motion frequency is 500~1500
Secondary/min.
Preferably, the lapping speed in the first step is 5~20m/s.
Preferably, the filament number of the polypropylene spun-bonded needle-punched geotextiles in the first step is 6~12dtex, and grammes per square metre is
100~1000g/m2, vertical/horizontal fracture strength >=70Nm-1/gsm。
Preferably, the polypropylene spun-bonded needle-punched geotextiles in the first step have excellent acid and alkali-resistance, ageing resistace,
The service life of product was up to 30~50 years.
Preferably, the GSZ in the second step is two-way/Unidirectional stretched plastic geogrid, glass geotechnique's lattice
One or more in grid, steel plastic geogrid and polyester warp-knitting polyester GSZ.
Preferably, the complex method in described second step is for braiding sewing, adhesive composite algorithm or heats composite algorithm
In one or more.
Preferably, the described braiding sewing be with loop bonding line the warp of GSZ, weft yarn with it is polypropylene spun-bonded
The fiber interlayer of needle-punched geotextiles is walked repeatedly, is knitted three and is integrated；Described adhesive composite algorithm is to be applied in grid surface
Water-soluble or heat-fusible adhesive is covered, polypropylene spun-bonded needle-punched geotextiles are placed on it, heated, drying, pressure rolling, it is cooled to
Type；The hot melt composite algorithm will GSZ through baking oven Far-infrared Heating, polypropylene spun-bonded needle-punched geotextiles and geotechnological lattice
Grid are forced together to form pp geo textiles/GSZ composite geotextile material through deflector roll.
Preferably, the form of the pp geo textiles/GSZ composite geotextile material in the 3rd step is one layer of soil
The spunbond pin of a compound layer polypropylene in the middle of the compound layer polypropylene spunbonded needle-punched geotextile of work grid surface or two-layer GSZ
Thorn geotextiles.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) composite geotextile material of the invention is used using high-strength pulling-resisting GSZ as enhancing base materials, in its table
Face is combined acid and alkali-resistance, anti-aging high-strength thick denier polypropylene spunbonded needle-punched geotextile, and gained composite geotextile material has very high
Tensile strength and relatively low elongation percentage, and there is acid and alkali-resistance, resistance to high and cold, long service life, can play filtering, isolation,
Draining, antiseepage, enhancing and reinforcement effect, are particularly suited for the engineering construction of acid and alkali-resistance environment and extremely frigid zones, can play preferably
Filtering, isolation, draining, antiseepage, enhancing and reinforcement effect.
(2) nonwoven layer uses that high-strength thick denier polypropylene is spun-bonded needle punched non-to be knitted in composite geotextile material of the invention
Producing material material, the vertical/horizontal tensile strength >=70Nm of made polypropylene spun-bonded needle fabric-1/ gsm, anti acid alkali performance fracture
Strength retention >=90%, compared to polyester or glass geotextiles, its range of application is wider, and service life is longer, can meet work
The requirement that journey is used.
Brief description of the drawings
Fig. 1 is the part preparation principle schematic diagram of pp geo textiles/GSZ composite geotextile material, respectively including spray
Filament plate 1, through the precursor 2 of bilateral quenching, cools down wind 3, drawing-off wind 4, drawing-off slit 5, slit drafting system 6, sub-wire piece
7, oscillatory type pendulum wire plate 8, fibre web 9, air intake device off the net 10 and into lace curtaining 11.Angle [alpha] be narrow slit extension apparatus out
Angle between tow and sub-wire piece.
Specific embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.It should be understood that
These embodiments are only illustrative of the invention and is not intended to limit the scope of the invention.In addition, it is to be understood that reading the present invention
After the content of instruction, those skilled in the art can make various changes or modifications to the present invention, and these equivalent form of values equally fall
In the application appended claims limited range.
The melt index of isotactic polypropylene used is 25~60g/10min in embodiment 1~3, and weight average molecular weight is 15
~35W；Benzophenone ultraviolet absorbent C81 and hindered amine light stabilizer Tinuvin770 are purchased from German BASF stock
Part company；Antioxidant 1098 and irgasfos 168 are purchased from Songyuan City of South Korea；A-490 type PP cooling masterbatch is purchased from Shenzhen gold complete works section
Skill Co., Ltd；VAE binder CW40-716 is purchased from SINOPEC Sichuan Vinylon Factory；Polyester warp-knitting polyester geotechnique's lattice
Grid, Glass Fibre Earth Grid, Biaxially oriented polypropylene GSZ are purchased from Tai'an Jia Lutong engineering materials Co., Ltd.
Embodiment 1
A kind of pp geo textiles/GSZ composite geotextile material by two-layer GSZ and one layer of geotextiles it is compound and
Into its preparation method is：
The first step：High-strength thick denier polypropylene spunbonded needle-punched geotextile is prepared, the polymer for using is high fusion index isotactic
Polypropylene, its melt index is 35g/10min, and weight average molecular weight is 18W；Raw material components are with weight fraction note, high fusion index
Isotactic polypropylene is cut into slices 100 parts, 2 parts of antioxidant, 1.5 parts of hindered amine light stabilizer Tinuvin770, benzophenone type ultraviolet
0.5 part of light absorbers C81,3 parts of PP cooling masterbatch A-490, wherein antioxidant are that antioxidant 1010 compounds system with irgasfos 168
, compound proportion is 6: 4；Feed bin is poured into after raw material is uniformly mixed, screw extruder is sent into, each section of temperature of screw extruder is such as
Under, feed zone is 190 DEG C, and melting zone is 220 DEG C, and metering zone is 210 DEG C, after melting, extruding, filtering, metering, input spinning
Casing, spinning body temperature is 210 DEG C, and melt temperature is 210 DEG C, and melt pressure is 8MPa, and melt is provided with spinning manifold
Pressure sensor requires melt pressure fluctuation≤0.1Mpa to measure melt pressure.As shown in figure 1, by the spray of spinning manifold
Filament plate 1 sprays thread, is cooled down through the cross air blasting 3 of bilateral, and wind speed is set in 1.4m/s, cools down 15 DEG C of air temperature, dries wet
Degree 60%, again through width for the narrow slit extension apparatus 6 of 0.01m carries out air drawing, drawing-off pressure is the precursor 2 after cooling
0.05MPa, draft speed is 2000m/min, and sub-wire piece 7 is impinged upon with 30 ° of α angles from narrow slit extension apparatus 6 tow out
On oscillatory type pendulum wire plate 8, uniform sub-wire is reached, the amplitude of oscillation of pendulum wire plate is 25 °, and motion frequency is 1200 times/min, and long filament exists
Into on lace curtaining 11, lapping speed is 10m/s to uniform adsorption, is exported to needing machine through pony press in the presence of air draught off the net 10,
Precompressed roller pressure is 2kPa, and temperature is 80 DEG C.Then the filament web of formation carries out pre-needling, pre-needling through a pre-needling machine
Machine is equipped with one block of upper thorn single needle plate, and value pin density is 4000 pieces/m, and punch frequency is 650 times/min.Again through three main needing machines
Reinforced, First is upper thorn single needle plate, value pin density is 5500 pieces/m, and punch frequency is 650 times/min；Under second is
Thorn crosspointer plate, value pin density is respectively 6800,6600 pieces/m, and punch frequency is 800 times/min；3rd is upper thorn crosspointer plate,
Value pin density is respectively 6800,6600 pieces/m, and punch frequency is 800 times/min.Obtained high-strength thick denier polypropylene spins after reinforcing
The filament number of viscous needle-punched geotextiles is 7dtex, and grammes per square metre is 400g/m2, vertical/horizontal fracture strength is 75Nm-1/gsm。
Second step：One polyester warp-knitting polyester GSZ is provided, is, with high-strength polyester fibers as raw material, to be oriented using warp knit
Structure weave mesh fabric, through between weft yams without case of bending, the coated GSZ for processing.High-strength thick denier is gathered
Propylene spunbonded needle-punched geotextile is combined with each other with above-mentioned polyester warp-knitting polyester GSZ by adhesive composite algorithm, i.e., poly-
Ester warp-knitting polyester GSZ surface coats VAE binder CW40-716, through deflector roll by the high-strength thick spun-bonded needle punched soil of denier polypropylene
Work cloth is combined with each other with GSZ, and deflector roll pressure is 4kPa, and temperature is 120 DEG C；Cooled down after 100 DEG C of drying 10min again
Shaping.Wherein, polypropylene spun-bonded needle-punched geotextiles two sides respectively adheres to a strata ester warp-knitting polyester GSZ, you can obtain simultaneously
Possesses the pp geo textiles/GSZ composite geotextile material of anti-filter and enhancing performance.Obtained composite geotextile material it is disconnected
Resistance to spalling is 80kN/m, and vertical permeability coefficient is 0.562cm/s, the tensile property of gained composite geotextile material by GSZ with
The joint effect of geotextiles, its tensile strength is slightly larger than GSZ, and extension at break is less than geotextiles, and water guide drainage performance master
To depend on geotextiles.
Embodiment 2
A kind of pp geo textiles/GSZ composite geotextile material by one layer of GSZ and one layer of geotextiles it is compound and
Into its preparation method is：
The first step：High-strength thick denier polypropylene spunbonded needle-punched geotextile is prepared, the polymer for using is high fusion index isotactic
Polypropylene, its melt index is 45g/10min, and weight average molecular weight is 13W；Raw material components are with weight fraction note, high fusion index
Isotactic polypropylene is cut into slices 100 parts, 1.5 parts of antioxidant, hindered amine light stabilizer Tinuvin7701 parts, benzophenone type ultraviolet
1 part of light absorbers C81,3 parts of PP cooling masterbatch A-490, wherein antioxidant are that antioxidant 1010 compounds system with irgasfos 168
, compound proportion is 5: 5；Feed bin is poured into after raw material is uniformly mixed, screw extruder is sent into, each section of temperature of screw extruder is such as
Under, feed zone is 200 DEG C, and melting zone is 225 DEG C, and metering zone is 215 DEG C, after melting, extruding, filtering, metering, input spinning
Casing, spinning body temperature is 215 DEG C, and melt temperature is 215 DEG C, and melt pressure is 9MPa, and melt is provided with spinning manifold
Pressure sensor requires melt pressure fluctuation≤0.1MPa to measure melt pressure, as shown in figure 1, by the spray of spinning manifold
Filament plate 1 sprays thread, is cooled down through the cross air blasting 3 of bilateral, and wind speed is set in 1.2m/s, cools down 25 DEG C of air temperature, dries wet
Degree 70%, again through width for the narrow slit extension apparatus 6 of 0.01m carries out air drawing, drawing-off pressure is the precursor 2 after cooling
0.03MPa, draft speed is 1500m/min, and sub-wire piece 7 is impinged upon with 45 ° of α angles from narrow slit extension apparatus 6 tow out
On oscillatory type pendulum wire plate 8, uniform sub-wire is reached, the amplitude of oscillation of pendulum wire plate is 15 °, and motion frequency is 800 times/min, and long filament is in net
Into on lace curtaining 11, lapping speed is 7m/s to uniform adsorption, is exported to needing machine, precompressed through pony press in the presence of lower air draught 10
Roller pressure is 2.5kPa, and temperature is 80 DEG C.Then the filament web of formation carries out pre-needling, pre-needling machine through a pre-needling machine
One block of upper thorn single needle plate is equipped with, value pin density is 4500 pieces/m, and punch frequency is 600 times/min.Enter through three main needing machines again
Row is reinforced, and First is upper thorn single needle plate, and value pin density is 6000 pieces/m, and punch frequency is 600 times/min；Second is lower thorn
Crosspointer plate, value pin density is respectively 6800,6600 pieces/m, and punch frequency is 800 times/min；3rd is upper thorn crosspointer plate, value
Pin density is respectively 6800,6600 pieces/m, and punch frequency is 800 times/min.
The filament number of obtained high-strength thick denier polypropylene spunbonded needle-punched geotextile is 9dtex after reinforcing, and grammes per square metre is 500g/
m2, vertical/horizontal fracture strength is 75Nm-1/gsm。
Second step：One Glass Fibre Earth Grid is provided, is with glass fibre as raw material, using obtained in certain loop bonding technique
Mesh material.High-strength thick denier polypropylene spunbonded needle-punched geotextile is answered with above-mentioned Glass Fibre Earth Grid by weaving sewing
It is combined, i.e., is walked repeatedly with the fiber interlayer of polypropylene spun-bonded needle-punched geotextiles in the warp of grid, weft yarn with loop bonding line, makes
Three's woollen yarn knitting is integrated, you can obtain the composite geotextile material for being provided simultaneously with anti-filter and enhancing performance.During construction, geotechnological cloth cover exists
Under, GSZ is upper.The fracture strength of obtained composite geotextile material is 60kN/m, and vertical permeability coefficient is 0.272cm/s,
By GSZ and the joint effect of geotextiles, its tensile strength is slightly larger than geotechnological lattice to the tensile property of gained composite geotextile material
Grid, extension at break is less than geotextiles, and water guide drainage performance depends primarily on geotextiles.
Embodiment 3
A kind of pp geo textiles/GSZ composite geotextile material by one layer of GSZ and one layer of geotextiles it is compound and
Into its preparation method is：
The first step：High-strength thick denier polypropylene spunbonded needle-punched geotextile is prepared, the polymer for using is high fusion index isotactic
Polypropylene, its melt index is 55g/10min, and weight average molecular weight is 9W；Raw material components are remembered with weight fraction, high fusion index etc.
Isotactic polypropylene is cut into slices 100 parts, 1.5 parts of antioxidant, hindered amine light stabilizer Tinuvin7701 parts, benzophenone ultraviolet
0.5 part of absorbent C81,2 parts of PP cooling masterbatch A-490, wherein antioxidant are that antioxidant 1010 compounds system with irgasfos 168
, compound proportion is 4: 6；Feed bin is poured into after raw material is uniformly mixed, screw extruder is sent into, each section of temperature of screw extruder is such as
Under, feed zone is 205 DEG C, and melting zone is 230 DEG C, and metering zone is 220 DEG C, after melting, extruding, filtering, metering, input spinning
Casing, spinning body temperature is 220 DEG C, and melt temperature is 220 DEG C, and melt pressure is 10MPa, and melt is provided with spinning manifold
Pressure sensor requires melt pressure fluctuation≤0.1MPa to measure melt pressure, as shown in figure 1, by the spray of spinning manifold
Filament plate 1 sprays thread, is cooled down through the cross air blasting 3 of bilateral, and wind speed is set in 1.7m/s, cools down 35 DEG C of air temperature, dries wet
Degree 50%, again through width for the narrow slit extension apparatus 6 of 0.015m carries out air drawing, drawing-off pressure is the precursor 2 after cooling
0.02MPa, draft speed is 1300m/min, and sub-wire piece 7 is impinged upon with 60 ° of α angles from narrow slit extension apparatus 6 tow out
On oscillatory type pendulum wire plate 8, uniform sub-wire is reached, the amplitude of oscillation of pendulum wire plate is 20 °, and motion frequency is 1000 times/min, and long filament exists
Into on lace curtaining 11, lapping speed is 5m/s to uniform adsorption in the presence of air draught off the net 10, is exported to needing machine through pony press, in advance
Platen pressure is 1.5kPa, and temperature is 80 DEG C.Then the filament web of formation carries out pre-needling, pre-needling through a pre-needling machine
Machine is equipped with one block of upper thorn single needle plate, and value pin density is 4000 pieces/m, and punch frequency is 600 times/min.Again through three main needing machines
Reinforced, First is upper thorn single needle plate, value pin density is 6000 pieces/m, and punch frequency is 600 times/min；Under second is
Thorn crosspointer plate, value pin density is respectively 6800,6600 pieces/m, and punch frequency is 800 times/min；3rd is upper thorn crosspointer plate,
Value pin density is respectively 6800,6600 pieces/m, and punch frequency is 800 times/min.Obtained high-strength thick denier polypropylene spins after reinforcing
The filament number of viscous needle-punched geotextiles is 12dtex, and grammes per square metre is 700g/m2, vertical/horizontal fracture strength is 70Nm-1/gsm。
Second step：One Biaxially oriented polypropylene GSZ is provided, is with isotactic polypropylene as raw material, through plastifying extrusion board
Material, punching, heating, biaxial tension are formed, and all have very big tensile strength in machine and transverse direction, are adapted to the ground of large area
Base reinforcement.High-strength thick denier polypropylene spunbonded needle-punched geotextile is compound by hot melt with above-mentioned Biaxially oriented polypropylene GSZ
Method is combined with each other, will GSZ through baking oven Far-infrared Heating to 170 DEG C, geotextiles and GSZ are combined through deflector roll
To together, you can obtain the composite geotextile material for being provided simultaneously with anti-filter and enhancing performance.During construction, geotechnological cloth cover is geotechnological under
Grid is upper.The fracture strength of obtained composite geotextile material is 90kN/m, and vertical permeability coefficient is 0.213cm/s, and gained is multiple
The tensile property of earth working material is closed by GSZ and the joint effect of geotextiles, its tensile strength is slightly larger than GSZ, breaks
Elongation is split less than geotextiles, and water guide drainage performance depends primarily on geotextiles.
Claims (10)
1. the preparation method of a kind of pp geo textiles/GSZ composite geotextile material, it is characterised in that including：
The first step：Feed bin is poured into after the section of high fusion index isotactic polypropylene is uniformly mixed with age resister, cooling masterbatch, is sent
Enter screw extruder, after melting, extruding, filtering, metering, input spinning manifold sprays thread by the spinneret of spinning manifold,
Cooled down through the cross air blasting of bilateral, the tow after cooling carries out air drawing through slit extension apparatus again, from slit drawing-off
α is impinged upon on sub-wire piece and oscillatory type pendulum wire plate device tow out at a certain angle, reaches uniform sub-wire, and long filament is in suction off the net
Uniform adsorption is exported to needing machine on lace curtaining through pony press under wind action, and the filament web of formation is through pre-needling, main pin
Thorn obtains polypropylene spun-bonded needle-punched geotextiles after reinforcing；
Second step：Above-mentioned polypropylene spun-bonded needle-punched geotextiles are combined with each other with GSZ, you can acquisition is provided simultaneously with anti-
Filter and the pp geo textiles/GSZ composite geotextile material for strengthening performance.
2. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
In the melt index of described isotactic polypropylene is 25~60g/10min, and weight average molecular weight is 15~35W.
3. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
In the age resister in the described first step is benzophenone ultraviolet absorbent, hindered amine light stabilizer, antioxidant
1098 or irgasfos 168 in one or more of compounding use.
4. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
In the cooling masterbatch in the described first step is A-490 type PP cooling masterbatch, and the mass fraction of addition is 1~4%.
5. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
In the cooling cross air blasting wind speed in the first step is 1~2m/s, and temperature is 10~40 DEG C, and blowing humidity is 40~80%.
6. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
In drawing-off pressure used by the air drawing in the first step is 0.02~0.1MPa, and draft speed is 1000~3000m/
min。
7. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
Angle α between, slit extension apparatus in first step tow out and sub-wire piece is 30~60 °.
8. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
In the amplitude of oscillation of the oscillatory type pendulum wire plate in the first step is 10~30 °, and motion frequency is 500~1500 times/min.
9. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
In the filament number of the polypropylene spun-bonded needle-punched geotextiles in the first step is 6~12dtex, and grammes per square metre is 100~1000g/
m2, vertical/horizontal fracture strength >=70Nm-1/gsm。
10. the preparation method of pp geo textiles as claimed in claim 1/GSZ composite geotextile material, its feature exists
In the complex method in described second step is to weave the one kind or several in sewing, adhesive composite algorithm or hot melt composite algorithm
Kind.
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| CN107503045A (en) * | 2017-08-31 | 2017-12-22 | 长青藤高性能纤维材料有限公司 | Superhigh molecular weight polyethylene fibers Comoposite spunbonded nonwoven production equipment |
| CN108239822A (en) * | 2018-03-14 | 2018-07-03 | 天津工业大学 | A kind of Lyocell filament nonwovens material and preparation method thereof |
| CN108559171A (en) * | 2017-12-12 | 2018-09-21 | 王敏 | A kind of preparation method of anti-aging geotextiles |
| CN110172783A (en) * | 2019-06-11 | 2019-08-27 | 安徽裕宝滤材有限公司 | A kind of sterile anti-corrosion belt non-woven fabrics and its manufacturing method |
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| CN115573103A (en) * | 2022-12-06 | 2023-01-06 | 天鼎丰聚丙烯材料技术有限公司 | Polypropylene filament geotextile for airport cement concrete pavement isolation layer and preparation method thereof |
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| CN107489081B (en) * | 2017-08-29 | 2023-04-07 | 山东鑫天河新材料科技有限公司 | Plasticization-based geogrid and preparation method |
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| CN108559171A (en) * | 2017-12-12 | 2018-09-21 | 王敏 | A kind of preparation method of anti-aging geotextiles |
| CN108239822A (en) * | 2018-03-14 | 2018-07-03 | 天津工业大学 | A kind of Lyocell filament nonwovens material and preparation method thereof |
| CN110172783A (en) * | 2019-06-11 | 2019-08-27 | 安徽裕宝滤材有限公司 | A kind of sterile anti-corrosion belt non-woven fabrics and its manufacturing method |
| CN112477321A (en) * | 2020-12-24 | 2021-03-12 | 山东诚汇金实业有限公司 | Geotextile, preparation method and application |
| CN113775030A (en) * | 2021-10-14 | 2021-12-10 | 山东路德新材料股份有限公司 | Drainage grid and manufacturing method thereof |
| CN114672084A (en) * | 2022-03-28 | 2022-06-28 | 广东特帅科技股份有限公司 | High-molecular modified material for geogrid |
| CN114672084B (en) * | 2022-03-28 | 2023-06-09 | 广东特帅科技股份有限公司 | Polymer modified material for geogrid |
| CN115573103A (en) * | 2022-12-06 | 2023-01-06 | 天鼎丰聚丙烯材料技术有限公司 | Polypropylene filament geotextile for airport cement concrete pavement isolation layer and preparation method thereof |
| CN115573103B (en) * | 2022-12-06 | 2023-02-28 | 天鼎丰聚丙烯材料技术有限公司 | Polypropylene filament geotextile for airport cement concrete pavement isolation layer and preparation method thereof |
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