CN106945371A - A kind of TPO antiseepage composite and preparation method thereof - Google Patents
A kind of TPO antiseepage composite and preparation method thereof Download PDFInfo
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- CN106945371A CN106945371A CN201710039319.9A CN201710039319A CN106945371A CN 106945371 A CN106945371 A CN 106945371A CN 201710039319 A CN201710039319 A CN 201710039319A CN 106945371 A CN106945371 A CN 106945371A
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- 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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
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- 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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
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- 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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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Abstract
The present invention provides a kind of TPO antiseepage composite, belongs to technical field of seepage-proof material, and it can solve existing impervious material pliability not enough, the problem of not directly exposure is applied to seepage control of dam.The TPO antiseepage composite of the present invention includes the TPO composite bed and geotextile layer being combined by cross-laminated polyolefin layer, thermoplastic polyolefin layer.The composite has excellent paracentesis resistance energy, and its resistance to bursting strength is high, resistance to hydrostatic pressure is high, thermal weld excellent performance, can bear the impact of more than 200m hydraulic pressure, meet high antiseepage head hydroelectric project application.Any plasticizer, and the pliability with rubber like material are free of in the composite of the present invention, can directly expose and use, service life is long.
Description
Technical field
The invention belongs to technical field of seepage-proof material, and in particular to a kind of TPO antiseepage composite and its system
Preparation Method.
Background technology
There is falling rocks or special-shaped sharp protrusion in construction or running, inevitably in concrete rolled rockfill dam
Thing, these falling rocks or special-shaped sharp protrusion thing can puncture the geosynthetics impervious material for being directly exposed to and using thereon, cause
Leakage preventing structure is destroyed.
High density polyethylene (HDPE) (HDPE) geo-membrane material has excellent paracentesis resistance energy, extremely low water vapo(u)r transmission energy
With good resistance to chemical corrosion, but this product modulus is high, partially firmly, requires high to basic unit's planarization, while HDPE is geotechnological
The not directly exposed application of film.Preferably, adaptation protrusion deformation characteristic is good for PVC geomembranes pliability, but inside PVC geomembranes
Containing a large amount of plasticizer, plasticizer is easily migrated in long-term exposure application, and application life is relatively low.
The content of the invention
The present invention not enough, not directly exposes the problem of being applied to seepage control of dam for existing impervious material pliability,
There is provided a kind of pliability good, puncture-resistant excellent performance, it is adaptable to dam, reservoir, embankment, cofferdam, water channel, tunnel, nuclear power station
Etc. newly-built and maintenance water power hydraulic engineering TPO antiseepage composite and preparation method thereof.
Solving the technical scheme that is used of present invention problem is：
A kind of TPO antiseepage composite, including TPO composite bed and geotextile layer；It is described
TPO composite bed includes cross-laminated polyolefin layer and thermoplastic polyolefin layer.
Preferably, the antiseepage composite can include two layers of geotextile layer, and one layer of TPO is combined
Layer, the TPO composite bed is between two layers of geotextile layer.
It is further preferred that the TPO composite bed includes two layers of thermoplastic polyolefin layer and one layer cross-laminated
Polyolefin layer, the cross-laminated polyolefin layer is located between thermoplastic polyolefin layer described in two layers.Most preferably, every layer of institute
Geotextile layer grammes per square metre is stated for 100~1000g/m2。
Wherein, the effect of geotextile layer is that to protect thermoplastic polyolefin layer to keep out irregular convex in the basic unit of applied environment
The destruction of thing, Rolling Stone and the extraneous factor generation such as lack of standardization of constructing is played, while can also improve the chi of thermoplastic polyolefin layer
Very little stability, mechanical strength, gradient stability etc., additionally it is possible to be used as draining and exhaust passage.
Preferably, the width of the cross-laminated polyolefin layer is 0.8-5m；The cross-laminated polyolefin layer is by thickness
The film for spending 0.01-0.3mm is formed through longitude and latitude braiding lamination；Or by thickness 0.01-0.3mm film co-extrusion it is cross-laminated and
Into.
Preferably, the raw material of the cross-laminated polyolefin layer includes the polymer containing polyethylene structure unit, institute
State the polymer containing polyethylene structure unit and include but is not limited to polyethylene, ethylene-butene copolymer, ethylene-octene, second
It is any in alkene-propylene-octene Copolymer, COPP, polyolefin elastomer (POE, Polyolefin elastomer)
One or more of mixtures.Wherein, POE refers to there is narrow molecular weight distribution and uniform by catalyst of metallocene
Short-chain branch distribution thermoplastic elastomer (TPE).Specifically, POE may be selected from the POE products of Dow Chemical Company.
Wherein, the effect of cross-laminated polyolefin layer is to assign the higher impact strength of product, fracture strength, resist and wear
Pierce intensity and impact strength and each to homogeneity etc..
Preferably, the raw material of the cross-laminated polyolefin layer also includes the first auxiliary agent, light stabilizer, described containing poly-
The polymer of ethylene chain construction unit, the first auxiliary agent, the parts by weight ratio of light stabilizer are：(91-99)：(0.3-4)：(0-
5)。
Wherein, the effect of light stabilizer is to improve the weatherability of polyethylene layer in cross-laminated polyolefin layer；Described
The effect of first auxiliary agent is to improve processing characteristics, corrosion resistance.First auxiliary agent includes antioxidant, Antibacterial accessory ingredient etc..
Preferably, the raw material of the thermoplastic polyolefin layer includes thermoplastic polyolefin resin, the thermoplastic polyolefin
The bending modulus of hydrocarbon resin is：2-300MPa, shore hardness is：Shao 10-50 D.
The thermoplastic resin includes thermoplastic component and elastic component；The thermoplastic component include HOPP,
It is one or more of mixed in the polymeric blend of polypropylene and ethylene-propylene copolymer, polypropylene mixture alloy, EP rubbers
Close, the elastic component includes ethylene-butene copolymer, ethylene-octene copolymer, ethylene-alpha-olefin copolymer, wherein described
The infrared absorption spectroscopy of thermoplastic polyolefin layer is in wave number 2800-3000cm-1And 1300-1500cm-1There is vibration absorption peak at place.
Wherein, thermoplastic polyolefin layer is the antiseepage body layer of composite, and not only imparting composite bed is excellent, Er Qiefu
Give the excellent high and low temperature resistance of composite bed (- 50 DEG C still keep pliability) and processing characteristics and welding procedure performance so that
Material can preferably adapt to the deformation of applied environment and realize the raised bursting characteristic of resistance.
Preferably, the raw material of the thermoplastic polyolefin layer also includes filler, the second auxiliary agent, light stabilizer, the heat
Plasticity vistanex, filler, the second auxiliary agent, the parts by weight ratio of light stabilizer are：(70-90)：(8-30)：(0.5-5)：
(0.1-5)。
Preferably, the geotextile layer is knitted including polypropylene-base geotextile, polyester geotextile, polyamide geotechnique
Any one or a few in thing.
Preferably, the width of the thermoplastic polyolefin layer is 0.8-5m；The thickness of the TPO composite bed
Spend for 0.5-10mm；And the width of the TPO composite bed is more than the width of the geotextile layer, wherein described
It is overlap edge at the position of the non-composite geotextile layer in edge of TPO composite bed, the width of the overlap edge is 5-
15cm。
The present invention also provides a kind of preparation method of above-mentioned TPO antiseepage composite, including following step
Suddenly：
(1) raw material of cross-laminated polyolefin layer is placed in the first Screw Extrusion unit after melting extrusion, warp loom,
Stretching-machine, lamination station obtain cross-laminated polyolefin layer；
(2) raw material of thermoplastic polyolefin layer is placed in melting extrusion in the second Screw Extrusion unit and obtains thermoplastic polyolefin
Hydrocarbon layers；
(3) cross-laminated polyolefin layer, thermoplastic polyolefin layer are delivered to same three roll-ins arranged in oblique L-type jointly
In ray machine, In-situ reaction lamination obtains TPO composite bed；
(4) geotextile is combined with TPO composite bed, forms TPO antiseepage composite.
Preferably, also include obtaining thermoplastic polyolefin layer using Tri-screw Extrusion in the step (2)；The step
Suddenly also it is combined in the lump including Tri-screw Extrusion is obtained into thermoplastic polyolefin layer when (3) situ is laminated.
In the TPO antiseepage composite of the present invention, including by cross-laminated polyolefin layer, thermoplastic polyolefin
TPO composite bed and geotextile layer that hydrocarbon layers are composited.The composite have excellent high and low temperature resistance,
Paracentesis resistance energy, resistance to bursting strength are high, resistance to hydrostatic pressure is high, each to homogeneous performance, thermal weld excellent performance, can bear 200m with
Upper hydraulic pressure impact, meets high antiseepage head hydroelectric project application.Any plasticizer is free of in the composite of the present invention, and is had
The pliability of rubber like material, can directly expose and use, service life is long.In addition, the composite processing that the present invention is provided
Technique is simple, it is convenient to construct, available for dam, reservoir, embankment, cofferdam, water channel, tunnel, man-made lake, refuse landfill, nuclear power
The newly-built and maintenance water power hydraulic engineering antiseepage such as stand.
Brief description of the drawings
Fig. 1 is the TPO antiseepage composite structure schematic diagram of embodiments of the invention 1；
Fig. 2 is the TPO antiseepage composite structure schematic diagram of embodiments of the invention 2；
Fig. 3 is the TPO antiseepage composite structure schematic diagram of embodiments of the invention 5；
Fig. 4 is infrared for the thermoplastic polyolefin layer's of the TPO antiseepage composite of embodiments of the invention 2
Abosrption spectrogram；
Wherein, reference is：1st, thermoplastic polyolefin layer；2nd, cross-laminated polyolefin layer；3rd, geotextile layer；4th, take
Edge fit.
Embodiment
To make those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further detail to the present invention.
Embodiment 1：
The present embodiment provides a kind of TPO antiseepage composite, as shown in figure 1, multiple including TPO
Close layer and geotextile layer 3；The TPO composite bed includes the TPO of the cross-laminated sum of polyolefin layer 2
Layer 1.
The TPO composite bed width 1m of the present embodiment, geotextile layer 3 is grammes per square metre 100g/m2Nonwoven poly- third
Alkene geotextiles, one end of geotextile layer 3 is used as overlap edge 4 from thermoplastic polyolefin layer's edges at two ends 5cm.
The preparation method of the TPO antiseepage composite of the present embodiment is as follows：
(1) raw material of cross-laminated polyolefin layer 2 is placed in the first Screw Extrusion unit, the second screw extruder,
Under 100 turns/min of screw speed, the first Screw Extrusion unit melting extrusion width is the longitude and latitude polyolefin that 5mm, thickness are 0.1mm
Film, then the cross-laminated polyolefin layer 2 through the width 1m that is composited through knitting device, stretching, lamination.
(2) it is 5mm thermoplastic polies to be placed in the second extruder melting extrusion to obtain thickness by the raw material of thermoplastic polyolefin layer 1
Olefin layer 1.
Wherein, the raw material weight number of cross-laminated polyolefin layer 2 is：Polyvinyl resin (manufacturer Dow, the trade mark
Versify2300) 91 parts, 4 parts of antioxidant 1010,2,020 5.0 parts of light stabilizer.
The raw material weight number of thermoplastic polyolefin layer 1 is：Reactor aggretion type polypropylene alloy (manufacturer Li Ande
Basel, resin model Hifax C721) 75 parts, 25 parts of calcium carbonate (800 mesh), 1.0 parts of antioxidant 1010, light stabilizer
2020 1.0 parts.
(3) step (1), the cross-laminated polyolefin layer 2 of (2) preparation, thermoplastic polyolefin layer 1 are delivered to jointly same
In the three-roller calendar arranged in oblique L-type, In-situ reaction lamination obtains TPO composite bed.
(4) by grammes per square metre 100g/m2Nonwoven polypropylene geotextiles and TPO composite bed be combined, form thermoplasticity
Polyolefin antiseepage composite.
Embodiment 2：
The present embodiment provides a kind of TPO antiseepage composite, as shown in Fig. 2 multiple including TPO
Close layer and upper and lower two layers of geotextile layer 3；The TPO composite bed includes cross-laminated polyolefin layer 2 and thermoplastic
Property polyolefin layer 1, the infrared absorpting light spectra of thermoplastic polyolefin layer is shown in Fig. 4.
The upper strata geotextile layer 3 of the present embodiment is grammes per square metre 500g/m2Nonwoven acupuncture polyester geotex-tile, lower floor geotechnique knits
Nitride layer 3 is grammes per square metre 1000g/m2Have the fine geotextiles of spinning polypropylene length；TPO composite bed thickness 2.5mm, width 2m；
The two ends of geotextile layer 3 are used as overlap edge 4 from the end margin 10cm of thermoplastic polyolefin layer one.
The preparation method of the TPO antiseepage composite of the present embodiment is as follows：
(1) raw material of cross-laminated polyolefin layer 2 is placed in the first Screw Extrusion unit, 350 turns/min of screw speed melts
Melt extrusion thickness 0.01mm two layers of polyolefin film, be the cross-laminated poly- of 2m through biaxial tension, the compound width that obtains of lamination
Olefin layer 2；
(2) the present embodiment includes two layers of thermoplastic polyolefin layer 1, herein respectively by every layer of thermoplastic polyolefin layer's 1
Raw material is placed in the second Screw Extrusion unit and Tri-screw Extrusion unit, and melting extrusion respectively obtains thermoplastic polyolefin layer 1；
Wherein, the raw material weight number of cross-laminated polyolefin layer 2 is：99 parts of polyvinyl resin, antioxidant 1010 0.3
Part；The raw material weight number of every layer of thermoplastic polyolefin layer 1 is：Blending type polypropylene/90 parts of thermoplastic elastomer alloy, carbonic acid
8 parts of calcium (800 mesh), 5 parts of antioxidant 1010,2,020 5 parts of light stabilizer, 1.5 parts of titanium dioxide.
(3) thermoplastic polyolefin layer 1 for preparing cross-laminated polyolefin layer 2, the first Screw Extrusion unit conveys jointly
Into the same three-roller calendar for arranging automatic temperature-control in oblique L-type, (temperature is 50/60/70 DEG C), In-situ reaction lamination, then exist
TPO composite bed is obtained through thermoplastic polyolefin layer in Tri-screw Extrusion unit is compound.
(4) by grammes per square metre 500g/m2Nonwoven acupuncture polyester geotex-tile through unreeling, the process such as tuningout be sent between stack,
The TPO composite bed obtained with step (3) is common compound through hot pressing, after cooling, then in thermoplastic polyolefin layer 1
Upper coating hot-melt adhesive, and with grammes per square metre 1000g/m2Have spinning pp geo textiles bonding compound, after through cooling, cutting, thickness measuring,
Technique thermoplastic's polyolefin antiseepage composites such as winding.
Embodiment 3：
The present embodiment provides a kind of TPO antiseepage composite, including TPO composite bed and geotechnique
Tissue layer 3；The TPO composite bed includes cross-laminated polyolefin layer 2 and thermoplastic polyolefin layer 1.
The TPO composite bed width 2m of the present embodiment, geotextile layer 3 is grammes per square metre 1000g/m2Nonwovens Needle
Polyester geotex-tile is pierced, the two ends of geotextile layer 3 are used as overlap edge 4 from the end margin 15cm of thermoplastic polyolefin layer one.
The preparation method of the TPO antiseepage composite of the present embodiment is as follows：
(1) raw material of cross-laminated polyolefin layer 2 is placed in the first Screw Extrusion unit, 400 turns/min of screw speed,
Melting extrusion width 1.8m, thickness 0.3mm polyolefin film, through biaxial tension, lamination is compound obtains the intersection that width is 2m
It is laminated polyolefin layer 2；
(2) the present embodiment includes two layers of thermoplastic polyolefin layer 1, herein respectively by every layer of thermoplastic polyolefin layer's 1
Raw material is placed in the second Screw Extrusion unit and Tri-screw Extrusion unit, and melting extrusion respectively obtains thermoplastic polyolefin layer 1；
Wherein, the raw material weight number of cross-laminated polyolefin layer 2 is：Polyvinyl resin (Dow Versify2400) 92
Part, 3 parts of antioxidant 1010,2,020 4 parts of light stabilizer；The raw material weight number of every layer of thermoplastic polyolefin layer 1 is：Thermoplasticity
70 parts of elastomer, 30 parts of talcum powder (1250 mesh), 0.5 part of antioxidant B225,0.1 part of light stabilizer B87,1 part of carbon black.
(3) cross-laminated polyolefin layer 2, the first Screw Extrusion unit thermoplastic polyolefin layer 1 are delivered to jointly same
(temperature be 70/80/90 DEG C), In-situ reaction lamination, then through threeth are arranged in the three-roller calendar of automatic temperature-control in oblique L-type
Thermoplastic polyolefin layer is compound in Screw Extrusion unit obtains TPO composite bed.
(4) by grammes per square metre 1000g/m2Nonwoven acupuncture polyester geotex-tile and TPO composite bed be combined, form heat
Plasticity polyolefin antiseepage composite.
Embodiment 4：
The present embodiment provides a kind of TPO antiseepage composite, and it has the thermoplastic polyolefin with embodiment 1
The similar structure of hydrocarbon antiseepage composite, it is with the difference of embodiment 1, the bending modulus of the thermoplastic polyolefin resin
For：300MPa, shore hardness is：50 Shao D, TPO composite bed thickness 6mm, width 0.8m, geotextile layer 3 for gram
Weight 500g/m2Nonwoven acupuncture polyester geotex-tile, the one end of geotextile layer 3 is from the end margin 7cm of thermoplastic polyolefin layer one.
Embodiment 5：
The present embodiment provides a kind of TPO antiseepage composite, as shown in figure 3, multiple including TPO
Close layer and geotextile layer 3；TPO composite bed therein polyolefin layer containing two layers of thermoplastic 1, cross-laminated polyene
Hydrocarbon layers 2 are located between two layers of thermoplastic polyolefin layer 1.It is with the difference of embodiment 3, the thermoplastic polyolefin resin's
Bending modulus is：100MPa, shore hardness is：20 Shao D, TPO composite bed thickness 10mm, width 5m, geotextile
Layer 3 is grammes per square metre 500g/m2Nonwoven acupuncture polyester geotex-tile, the one end of geotextile layer 3 is from the end margin of thermoplastic polyolefin layer one
10cm。
Embodiment 1-5 TPO antiseepage composite is subjected to performance test, test result is shown in Table 1.
Test condition and as follows：
1 hardness determines identation hardness using hardometer according to GB/T2411-2008 plastics and hard rubber and tested, 5s readings；
2 fracture strengths and 3 elongation percentage are according to GB/T328.9-2007《The part of building waterproof coil test method the 5th：High score
Sub- waterproof roll tensile property》In method A tested；Rate of extension 100mm/min, testing bar number 5, averages；
4 tearing strengths are according to GB/T1376-2010《The measure of the trapezoidal tearing brute force of geosynthetics》, rate of extension
50mm/min；
The adjacent overlap edge of 5 products using hot air welding into closely knit entirety, 500 DEG C of welding temperature, speed 2.5m/min, with
Maximum peeling force is denoted as the seam peel strength of material, and method of testing is using GB/T328.21 building waterproof coils test method the
21 part polymer membranes seam peel strength tests, rate of extension 100mm/min；
6 vertical permeability coefficients are according to GB19979.2-2006《Geosynthetics barrier performance part 2：Infiltration coefficient
Measure》；
7 rise brokenly deformation ratio use adjustable pressure pressure vessel testing, aperture 75mm, pressure 2.5MPa, 30min are used for
Simulate the deformation characteristic of the lower product of product head height effect；
8 hydrostatic pressure resistants are according to GB/T19979.1-2005 geosynthetics barrier performance part 1s：Resistance to hydrostatic pressure is surveyed
It is fixed, for simulating product resistance head height；
9 bursting strengths are according to GB/T14800-2010 geotextiles bursting strength measurement of test method, speed 50mm/min；
10 low-temperature bending performances are rolled up according to the part macromolecule waterproof of GB/T328.15 building waterproof coils test method the 15th
Material low-temperature bending is tested, test bar -50 DEG C；
11 heat aging performances use heat aging test chamber, 115 DEG C ± 2 DEG C of temperature, aging 224 days；
12 artificial climate accelerated ageings test is tested according to ASTM G151 methods.
Table 1
From the data in table 1, it can be seen that embodiment 1-5 TPO antiseepage composite has excellent pliability, table
Now relatively low shore hardness (Shao 28-35 D) and higher elongation percentage, up to more than 550%.Artificial weathering aging and heat aging
Can be the good and bad key index of article durable performance, embodiment 1-5 either heat ageing (115 DEG C/224 days) or artificial climate
Aging (10080Kj/m2Irradiation) property retention rate is more than 90% and in -50 DEG C of low-temperature bending flawlesses, with excellent
Durability, application life and low-temperature resistant flexile.
The present embodiment has higher water pressure resistance performance, such as without infiltration under 2.5MP pressure, and the multidirectional deformation rate that rises brokenly is high
The pressure produced up to head height of 400%, the 2.5MP pressure equivalent to 250m, this fully shows that embodiment can resist 200m
The impulsive force of above head, can adapt to seepage control of dam technical requirements of the height of dam in more than 200m.
Obviously, also many modifications may be made to for the embodiment of the various embodiments described above；For example：The specific number of each raw material
Can according to circumstances it be changed, technological parameter during specific preparation can be adjusted as needed.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of TPO antiseepage composite, it is characterised in that knitted including TPO composite bed and geotechnique
Nitride layer；The TPO composite bed includes cross-laminated polyolefin layer and thermoplastic polyolefin layer.
2. TPO antiseepage composite according to claim 1, it is characterised in that the cross-laminated polyene
The width of hydrocarbon layers is 0.8-5m；The cross-laminated polyolefin layer is by thickness 0.01-0.3mm film through longitude and latitude braiding lamination
Into；Or cross-laminated formed by thickness 0.01-0.3mm film co-extrusion.
3. TPO antiseepage composite according to claim 1, it is characterised in that the cross-laminated polyene
The raw material of hydrocarbon layers include the polymer containing polyethylene structure unit, the polymer containing polyethylene structure unit include but
It is not limited to polyethylene, ethylene-butene copolymer, ethylene-octene, ethylene-propylene-octene copolymer, COPP, polyolefin
Elastomer.
4. TPO antiseepage composite according to claim 3, it is characterised in that the cross-laminated polyene
The raw material of hydrocarbon layers also include the first auxiliary agent, light stabilizer, the polymer containing Polyethylene Chain construction unit, the first auxiliary agent,
The parts by weight ratio of light stabilizer is：(91-99)：(0.3-4)：(0-5).
5. TPO antiseepage composite according to claim 1, it is characterised in that the TPO
The raw material of layer includes thermoplastic polyolefin resin, and the bending modulus of the thermoplastic polyolefin resin is：2-300MPa, shore is hard
Spend and be：Shao 10-50 D.
6. TPO antiseepage composite according to claim 5, it is characterised in that the thermoplastic resin bag
Include thermoplastic component and elastic component；The thermoplastic component includes HOPP, polypropylene and ethylene-propylene copolymer
One or more of mixing in polymeric blend, polypropylene mixture alloy, EP rubbers, the elastic component include ethene-
Butylene copolymer, ethylene-octene copolymer, ethylene-alpha-olefin copolymer, wherein the infrared absorption of the thermoplastic polyolefin layer
Spectrum is in wave number 2800-3000cm-1And 1300-1500cm-1There is vibration absorption peak at place.
7. TPO antiseepage composite according to claim 5, it is characterised in that the TPO
The raw material of layer also includes filler, the second auxiliary agent, light stabilizer, and the thermoplastic polyolefin resin, filler, the second auxiliary agent, light are steady
The parts by weight ratio for determining agent is：(70-90)：(8-30)：(0.5-5)：(0.1-5).
8. TPO antiseepage composite according to claim 1, it is characterised in that the geotextile layer bag
Include any one or a few in polypropylene-base geotextile, polyester geotextile, polyamide geotextile.
9. TPO antiseepage composite according to claim 1, it is characterised in that the TPO
The width of layer is 0.8-5m；The thickness of the TPO composite bed is 0.5-10mm；And the TPO is multiple
The width for closing layer is more than the width of the geotextile layer, wherein the non-composite earthwork in edge of the TPO composite bed
It is overlap edge at the position of tissue layer, the width of the overlap edge is 5-15cm.
10. a kind of preparation method of the TPO antiseepage composite described in any one of claim 1-9, its feature exists
In comprising the following steps：
(1) raw material of cross-laminated polyolefin layer is placed in the first Screw Extrusion unit after melting extrusion, warp loom, stretching
Machine, lamination station obtain cross-laminated polyolefin layer；
(2) raw material of thermoplastic polyolefin layer is placed in melting extrusion in the second Screw Extrusion unit and obtains TPO
Layer；
(3) cross-laminated polyolefin layer, thermoplastic polyolefin layer are delivered to the same three-roller calendar arranged in oblique L-type jointly
In, In-situ reaction lamination obtains TPO composite bed；
(4) geotextile is combined with TPO composite bed, forms TPO antiseepage composite.
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