CN101454150A - UV resistant multilayered cellular confinement system - Google Patents

Abstract

The present disclosure generally relates to a polymeric cellular confinement system which can be filled with soil, concrete, aggregate, earth materials, and the like. More specifically, the present disclosure concerns a cellular confinement system characterized by improved durability against damage generated by UV light, humidity, and aggressive soils, or combinations thereof.

Description

The multilayered cellular confinement system of anti-UV

The cross reference of related application

The application relates to: that submit to, that be entitled as " GEOTECHNICAL ARTICLES " simultaneously U.S. Patent application No. (PRSI 200003); That submit to, that be entitled as " HIGHPERFORMANCE GEOSYNTHETIC ARTICLE " simultaneously U.S. Patent application No. (PRSI 200004); That submit to, that be entitled as " WELDING PROCESS ANDGEOSYNTHETIC PRODUCTS THEREOF " simultaneously U.S. Provisional Patent Application No. (PRSI 200005); And that submit to, that be entitled as " PROCESS FOR PRODUCINGCOMPATIBILIZED POLYMER BLENDS " simultaneously U.S. Provisional Patent Application No. (PRSI 200006).The full text of all these 4 parts of patent applications is all incorporated this paper into way of reference at this.

Background technology

The disclosure relates generally to can be filled with soil, concrete, gather materials, the polymer cellular confinement system of earth material etc.More particularly, the disclosure relates to a kind of cellular confinement system, it is characterized in that, for having the durability of raising by ultraviolet light, humidity, corrosive ground and their destruction that combination produced.

Be used to reinforce the plastic products of soil, cellular confinement system (CCS) particularly is used to strengthen bearing capacity, steadiness and corrosion resistance by the geotechnological material of described CCS supporting (for example soil, rock, sand, stone, mud, clay, concrete, gather materials and earth material).

CCS has many high density polyethylene (HDPE)s (HDPE) band in distinctive honeycomb three-dimensional structure.In the position that separates, these bands are welded to one another, thereby form above-mentioned structure.In CCS or by CCS, geotechnological material can be strengthened with firm.In this article, geotechnological material firm by described CCS and that strengthen is called geotechnological reinforcing material (GRM).The surface of CCS can be through mold pressing, thus increase the friction of itself and GRM and reduce CCS and GRM between relatively move.

Because hoop tensile strength, the passive drag of adjacent lattice chamber and the effect of the friction between CCS and the GRM of lattice locular wall, the result makes CCS by increasing its shear strength and hardness GRM be strengthened.Under the situation of load, CCS can produce the frictional force between powerful side direction reinforcement edge and the soil dative locular wall.These mechanism have formed has the high flexural strength and the bridge structure of hardness.The improved effect of bridge the performance of permanent load distortion of ordinary granular filler, and make the thickness of structural support member and weight reduce sharp, reduction can be up to 50%.CCS can be used for support load purposes (, united tranport station field firm such as roadbed, be arranged under the rail with stablize ballast aggregate, retaining wall, protection GRM or vegetation and be set up on the slope with raceway groove in).

Hereinafter, term " HDPE " is meant and it is characterized by density greater than 0.940g/cm ³Polyethylene.Term " polyethylene of intermediate density (MDPE) " is meant and it is characterized by density greater than 0.925g/cm ³, and be less than or equal to 0.940g/cm ³Polyethylene.Term " linear low density polyethylene (LLDPE) (LLDPE) " is meant that it is characterized by density is 0.91g/cm ³To 0.925g/cm ³Polyethylene.

The plastic wall of CCS in use and in the process of using under the environment of UV light, heat and humidity (UHH) may be damaged.This damage can cause producing fragility, and flexible, toughness, resistance to impact and puncture resistance all can reduce impart tear variation, and variable color.Particularly, in the high temperature area on earth, the infringement that heat causes CCS is tangible.As used herein, term " high temperature area " is meant the zone that is positioned at both sides, equator 42 degree latitudes, particularly along the zone of desert belt.The high temperature area comprises (for example): north African, Spain south, the Middle East, the Arizona State of the U.S., Texas, Louisiana and Florida State, Central America, Brazil, most of area of India, SOUTHERN CHINA, Australia, and some areas of Japan.The high temperature area experiences the temperature more than 35 ℃ regularly, and every day, strong daylight sustainablely reached 14 hours.The temperature that is exposed to the dark surface of the plastics under the direct sunlight can be up to 90 ℃.

Industrial some strategies that adopted are avoided damaging by the polymer that constitutes plastic wall is handled with the protection plastic wall.For the product (for example, the product of black or Dark grey) of dark color, can introduce carbon black to stop UV light and to remove free radical.Yet, use carbon black and a shortcoming producing is attractive in appearance for influencing it.In with the application of CCS, seldom adopt the CCS of black as the part of landscape structure.The CCS that second shortcoming is black tends to absorb daylight, thereby is heated.When HDPE and MDPE were heated to more than 40-50 ℃, they tended to take place creep.As a result, particularly in pad and the thin position of wall construction, creep may be quickened sharp, thereby causes structural deterioration potentially.

CCS is fixed on the GRM usually, perhaps by wedge, rib, rod or tie thing and be anchored on the GRM.When CCS was used to upgrade a slope, this fixedly was particular importance.Described wedge, rib, rod or tie that thing normally is fabricated from iron and since the effect of direct sunlight its may be heated to temperature above 60-85 ℃.The high conductance of iron also conducts heat in the hidden parts of CCS.These anchor points become the serious stress center.Under the situation of not carrying out the UHH protection, in observing the remainder of CCS, take place before any tangible damage, these anchor points may lose efficacy.

Place, welding position between the band that constitutes CCS also can produce stress.Stress can be by causing with downforce: the pressure that is produced when for example the people walks on CCS in installation process, before loading GRM and the pressure of loading the pressure that produced in the GRM or being produced when GRM being deposited on the CCS so that loading the lattice chamber.When GRM became wet or the water among the GRM has freezed under cold climate, then GRM also may expand.In addition, the thermal coefficient of expansion of GRM (CTE) than the low about 5-10 of thermal coefficient of expansion of the HDPE that is used to make described band doubly.Therefore, HDPE will expand manyly than GRM, and this can cause producing stress along the CCS wall, particularly produces stress at the place, welding position.

Number of C CS is dyed the similar tone of GRM that supports to them.This comprises light-coloured prods and traditional CCS (custom-shaded CCS) that repaiies look, for example the similar CCS of the similar CCS of color and soil, color and grass and color and the similar CCS of mud.

For CCS, need special additive (that is the material of other except carbon black) so that with their property retention 20 years or longer time.Effective additives is: UV absorbent, for example benzotriazole and Benzophenone class; Free radical scavenger, for example hindered amine as light stabilizer (HALS); And antioxidant.Usually, the additive more than a kind " packing " is offered described polymer.Described additive is introduced in the described polymer with following form usually, for example additive dispersions and/or the additive solution in masterbatch or holkobatch, polymer support or the paraffin carrier.

The amount of additive that is used for making the polymer of CCS depends on the desired life-span of CCS.The amount of the additive that needs for the protection that about 5 years are provided will be less than need be provided 10 years or the amount of the additive of the protection of longer time and needs.Because additive can or can be evaporated or take place hydrolysis by extracting in the described polymer with the passing of time, thus for the actual amount of protecting needed additive for a long time be to protect about 2 to 10 times of amount of needed additive in order to carry out short-term.In other words, the amount that joins the additive in the described polymer must compensate the additive that loses owing to extracting, evaporation and hydrolysis, and the amount of the additive that therefore long-term protection is required is apparently higher than the amount of the required additive of short-term protection.In addition, along with increasing of heat in the environment that uses CCS and humidity, need more additive to join in the described polymer to keep its protection level.

Usually, described additive is dispersed or dissolved in the entire cross section that runs through the polymeric tapes that is used for making CCS quite equably.But, additive and cause that major part between the reagent that UHH destroys interacts and occur in the outmost part of polymeric tapes or polymer film, that is, and 10 microns to 200 microns part.

Some high temperature areas, particularly torrid areas also can experience high humility and heavy rain.High humility and thermal can the acceleration protection additive in polymeric tapes hydrolysis, extracting and be evaporated.Be apparent that most the loss of UV absorbent (for example Benzophenone class and benzotriazole) and heat stabilizer (particularly hindered amine as light stabilizer (HALS)).In case these additive losses fall, described polymeric tapes will be easy to be attacked, and its performance can quick deterioration.

U.S. Patent No. 6,953,828 disclose a kind of film, comprise the stable geotechnique of UV is used film.This patent relates to the composition of polypropylene and very low density polyethylene, and said composition is effectively as film, but said composition is not actually used in CCS.Polypropylene is highly brittle under sub-zero temperature.Because creep often takes place in very low density polyethylene under medium load, be very unstable so use it among the CCS.In case creep takes place CCS, the globality of CCS and GRM will be destroyed, and structural behaviour then can take place irreversibly to damage.In addition, polypropylene need add a large amount of additives to overcome the problem of extracting and hydrolysis, and this makes that this polymer is uneconomic.

U.S. Patent No. 6,872,460 have instructed a kind of double-layer polyester membrane structure, wherein one deck or two-layer in add UV absorbent and stabilizing agent arranged.Usually, the polyester of different brackets is applied in the GSZ, and these GSZs are two fiber products (for example, strengthening the matrix of rib) that are used to reinforce soil.GSZ is embedded in underground usually, therefore can not be exposed under the UV light.Different therewith is that CCS is three-dimensional, and can partly be exposed on the ground usually, therefore can be exposed under the UV light.Polyester is usually higher owing to its hardness, relatively poor with puncture resistance in the resistance to impact under the environment temperature (particularly in sub-zero temperature), hydrolytic resistance (particularly when its with such as concrete when alkaline medium the calcined earth directly contacts) be moderate extremely relatively poor degree and the higher CCS of not being suitable for of totle drilling cost.And polyester need add a large amount of additives to overcome the problem of extracting and hydrolysis, and this makes that this polymer is uneconomic.

For the polymeric tapes of thin (can be characterized by thickness less than about 500 microns), the actual amount of required additive is consistent with the theoretical aequum that calculates usually.But in the band of thicker (can be characterized by thickness greater than about 750 microns, that is, strengthen under the situation of element (for example CCS) as structural geotechnique usually), the actual total amount of required additive is high more a lot of than the aequum that theory calculates usually.For for about 1.5mm or the thicker high-performance CCS (wherein need to have intensity, toughness, flexible, anti-tearing property, puncture resistance and low temperature retention), the amount of the required additive that required additive total amount calculates than theory usually is high 5 to 10 times for thickness.For polymer, the cost of UHH protective additive is very expensive.Therefore; most manufacturer according to the end amount of the required interpolation level that calculates with theory (promptly; minimum) addition of more approaching unanimity provides additive, rather than according to providing additive with the required higher addition of the long-term protection of 50 years or longer time.In addition, the barrier properties of HDPE and MDPE (preventing that harmful ion and molecule from entering in the described polymer) and prevent that additive is all relatively poor by the performance of extracting and evaporation in the described polymer.For above-mentioned reasons, in fact, most manufacturer can not guarantee all that at present the thick polymeric tapes that they produce has long durability.Used HALS and the UV absorbent of 0.1 weight % to 0.25 weight % among the present CCS, they are dispersed in the whole polymeric tapes.

Relevant with outdoor durable is the type that is used for the polymer of CCS on the other hand.The appropriate polymer that selection is used for this purposes is result compromise between economic aspect (that is cost of material) and long durability.In this regard, since polyethylene (PE) in cost, intensity, to be low to moderate flexible under-60 ℃ the temperature and the ease of processing in the standard extrusion equipment relatively more balanced aspect these, so polyethylene is one of most popular use material.In addition, polyethylene has the photosensitiveness of anti-UV and the hear resistance of appropriateness.But under the situation of not adding additive, polyethylene was degraded easily in 1 year and is reached the degree that is not useable for commercial use.Even PE is highly stable, with respect to for the polymer of the more anti-UV vinyl-acrylate copolymer and the terpolymer, PE still is weaker.

On the other hand, from the viewpoint of anti-UHH, show higher anti-UV and stable on heating polymer such as acrylate copolymer and methacrylate copolymer and terpolymer (particularly vinyl-acrylate copolymer and terpolymer) and be highly suitable for commercial the application.But these polymer phases have limited their being extensive use of in CCS uses to higher cost and relatively low modulus and strength characteristics.

People need provide the polymeric tapes of a kind of cost-effective and anti-UHH and have the CCS of this polymeric tapes, particularly similar to GRM light band and CCS thereof.(particularly outdoor application) all has tolerance to this CCS to harsh conditions under the weather of arid, the torrid zone, subtropical zone to the arctic, and has 50 years or service life for more time.

Summary of the invention

The disclosure relates to can show the Earthwork Products, particularly cellular confinement system (CCS) that UV light, heat and humidity is had the height durability in the time at least 2 years.In specific embodiment, CCS showed described durability at least 10 years.In another specific embodiment, CCS showed described durability at least 20 years and maximum 100 years.Durability is meant not can efflorescence or cracking, and keeps initial color, surperficial globality, intensity, modulus, elongation at break, puncture resistance, creep resistant and weld strength.

In an exemplary, CCS has many polymeric tapes.Every polymeric tapes all has at least one polymer inner layer and at least one polymeric outer layer.Compare with described at least one polymer inner layer, described at least one polymeric outer layer tolerates UV light, humidity or heat (UHH) more.Each polymeric layer all contains at least a polymer.Described at least one polymeric outer layer also contains UV absorbent or hindered amine as light stabilizer (HALS).Described UV absorbent stops and the UV light that prevents to be harmful to is penetrated in described at least one polymer inner layer.Described HALS makes the harmful free radical inactivation that produces in the described skin, thereby can not be diffused in the internal layer of described polymeric tapes.

In other embodiments, polymeric layer contains the additive that is selected from antioxidant, pigment and dyestuff.

In other embodiments, at least one polymeric layer can contain filler.In specific embodiment, described filler has higher heat conductivity than the polymer in the described polymeric layer.

In other embodiments, one deck at least of described polymeric tapes contains pigment or dyestuff.Preferably, described layer has the similar color of GRM that is supported to described CCS.Preferably, described color is not black or Dark grey.

Described CCS can be used for strengthening GRM.

Other CCS and device are also disclosed.The method of making and use described polymeric tapes and/or CCS also is provided.Hereinafter will be described in detail described these and other embodiment.

Description of drawings

Below be the accompanying drawing summary, these accompanying drawings are listed for the purpose that exemplary disclosed herein is described, rather than in order to limit the present invention.

Fig. 1 is the stereogram of individual layer CCS.

Fig. 2 is the stereogram that the lattice chamber of geotechnological reinforcing material (GRM) is housed.

Fig. 3 is the stereogram that contains the lattice chamber of GRM and wedge.

Fig. 4 is the stereogram that contains the lattice chamber of rib.

Fig. 5 is the stereogram that comprises the lattice chamber of rib and locker.

Fig. 6 is the stereogram that comprises the exemplary of the lattice chamber that strengthens wall part.

Fig. 7 is the figure of the exemplary polymer band that uses in CCS of the present disclosure.

Detailed Description Of The Invention

Provide following detailed Description Of The Invention so that make those of ordinary skill in the art can make and use embodiment disclosed herein, and following detailed Description Of The Invention has been listed the preferred forms of implementing these embodiments expectations.Yet multiple alter mode is conspicuous for the person of ordinary skill of the art, and should be considered within the scope of the present disclosure.

With reference to accompanying drawing, can understand part disclosed herein, technology and device more completely.These figure only are based on convenient and are easy to illustrate of the present disclosure schematically showing, and therefore, these figure have no intention to illustrate the relative size and the size of device or its part, and/or the scope of definition or qualification exemplary.

The disclosure relates to cellular confinement system (CCS), and it has many polymeric tapes and has the long durability of height when using out of doors.Every band all has at least one polymeric outer layer and at least one polymer inner layer.Described polymeric outer layer more tolerates UHH than described polymer inner layer.Particularly, described polymeric outer layer tolerates UV light, humidity or heat (UHH) more than original HDPE.Term " original HDPE " is meant any HDPE that is obtained by the reactant before mixing with any UV absorbent or HALS additive.It should be noted that any polymer that is obtained by reactant has contained the antioxidant of 200ppm-1000ppm usually.

Fig. 1 is the stereogram of individual layer CCS.CCS 10 has many polymeric tapes 14.Adjacent band combines by the physical engagement position 16 of separating.This combination can still realize by welding usually by engaging, sew up or welding and carry out.Part between two binding sites 16 of each band has formed the lattice locular wall 18 of single lattice chamber 20.Each lattice chamber 20 all has the lattice locular wall of being made by two kinds of different polymeric tapes.Band 14 combines, thereby forms honeycomb pattern by a plurality of bands.For example, outside band 22 combines by physical engagement position 16 with inner band 24, and wherein physical engagement position 16 is spaced apart regularly along the length direction of band 22 and 24.A pair of inner band 24 combines by physical engagement position 32.Each junction 32 is all between two binding sites 16.As a result, when with many bands 14 when the direction perpendicular to the band face trails, this band is with sinusoidal mode bending, thereby forms CCS 10.In the CCS edge that the end of two polymeric tapes 22 and 24 is met, form terminal welding 26 (also thinking to connect) in the position of distance end 28 a bit of distances, thereby form short-tail 30, it stablizes two polymeric tapes 22 and 24.

Can adopt at least two kinds of different modes that CCS 10 is strengthened with respect to ground and fix.Can on polymeric tapes, form hole 34, make these holes have a common axis.Then, can make rib 12 extend through hole 34.Rib 12 plays the effect of the anchor element (it can prevent that CCS10 from unwanted displacement taking place) of continuous whole, thereby strengthens CCS 10 and improve its steadiness.Can in the application on raceway groove and slope, use rib, provide thus, and when lower floor or natural pan soil/rock have hindered the use of stake, may need rib at gravity and hydrodynamic extra stability.Can also use wedge 36 that CCS 10 is anchored in the substrate (for example ground) of using this CCS.Wedge 36 is inserted in the substrate, till the degree of depth is enough to the effect of anchor is provided.Wedge 36 can have Any shape as known in the art (that is, term " wedge " is meant function but not shape).Shown rib 12 and wedge 36 can only be a part that is cut into the iron or the reinforcing bar of appropriate length.They can also be formed by polymeric material.They can be formed by the composition identical with the composition of CCS itself.If the rigidity of rib 12 and/or wedge 36 is higher than CCS 10, also be available.Use the rib 12 and/or the wedge 36 of sufficient amount to strengthen/firm CCS 10.It should be noted that rib and/or wedge should be always place against the lattice locular wall, rather than place against the welding position.Rib and/or wedge are concentrated in little zone high load, because the welding position is a unstable relatively point among the CCS, so rib or wedge can be increased the possibility that adds weld failure against the welding position placement.

As U.S. Patent No. 6,296,924 is described, can also comprise extra hole 34 in polymeric tapes.These extra holes increase to many 30% with the frictional engagement between polymeric tapes and the GRM; And along with the root of vegetation is grown between lattice chamber 20, these extra holes have increased the pinning effect of the root of polymeric tapes and vegetation system; In addition, band lateral drainage situation has been improved in these extra holes, thereby obtains more performance in by water saturated soil; And these extra holes have promoted healthy soil environment.In addition, can also reduce the expense of mounting cost and long-term maintenance.In addition, compare with the CCS with solid wall, above-mentioned this CCS is lighter and be easier to handle.

Fig. 2 is the stereogram that the lattice chamber 20 of geotechnological reinforcing material (GRM) is housed.Its state that may demonstrate when lattice chamber 20 is described on CCS being placed on slope (shown in the arrow A), remain in the lattice chamber 20 GRM essentially horizontally (promptly, with respect to earth surface is flat) be fixed, and the lattice locular wall 14 of CCS 10 with its on be placed with the slope A perpendicular of CCS.Because lattice locular wall 14 is not horizontal with GRM, so GRM is located substantially on the lattice locular wall of below, slope, and " dead zone " is retained on the lattice locular wall of top, slope.

Lattice locular wall 14 is subjected to the effect of power F1 and F2.Because the effect of tilting, power F1 (weight by GRM is applied) and power F2 (dead zone by lattice chamber adjacent, the below, slope is applied) are unbalanced.Power F1 is greater than power F2.This unbalanced urgent the junction 16 of defeating.In addition, GRM also applies separating force F3 to junction 16.This separating force is produced by the quality of GRM, is natural force.For example, because GRM has kept water, so during humidity, GRM will expand.For example, can experience repeatedly the cyclic process of freezing-thawing owing to be retained in water in the lattice chamber 20, so GRM also will expand and shrink.This firm welding that shows 16 places in each junction is very important.

Fig. 3 is the stereogram that contains the single lattice chamber 20 of geotechnological reinforcing material (GRM) and wedge 36.Wedge 36 on the slope the side the lattice locular wall on apply additional force F4, thereby help the power on the balance lattice locular wall 14.This additional force is applied in the part of grid locular wall on the slope, if the lattice locular wall is enough not solid and not anti-creep, then additional force may be harmful to by the plaid matching locular wall.

Figure 4 and 5 are the stereograms that contain the single lattice chamber 20 of rib 12.As indicated above, rib 12 extends through the hole 34 in the band 14, particularly can not use under those situations of wedge 36, and rib 12 can be used for firm CCS 10.Stress is confined on the band 14 on every side of hole 34.For example, rib 12 can have the CTE different with band 14.Band 14 is provided with hole 34 but does not use in the application of rib 12, and GRM or water/ice also may permeate via hole 34; Expand then, thereby increased stress, and may damage the globality of band 14.As shown in Figure 5, can use locker 38 that stress is distributed in the bigger zone, but stress still exist.Use locker 38 in prolonged application, can provide additional protection to inefficacy.

Fig. 6 is the stereogram that comprises the exemplary of the lattice chamber that strengthens wall part.Wedge 36 is positioned at the inside of lattice chamber 20.As discussing at reference Fig. 3, wedge 36 part of grid locular wall on the slope applies additional force, and if the lattice locular wall is enough not solid and not anti-creep, and then additional force may be harmful to by the plaid matching locular wall.In an exemplary of the present disclosure, its width is set between the lattice locular wall of wedge 36 and top, slope than wedge 36 wideer enhancing wall parts 40.Similar to locker 38, strengthen wall part 40 stress is dispersed in the bigger zone of lattice locular wall.In one embodiment, strengthen wall part 40 and extend to outside the upper limb of lattice locular wall, and be folded to the opposite side of lattice locular wall downwards, thereby further increased whole wedge contact intensity partly on the lattice locular wall.In other embodiments, strengthen wall part 40 and also can have hole 34 so that the application of rib 12 to be provided.

In one embodiment, use suitable bonding (for example, contact adhesive or curing adhesive) will strengthen wall part 40 attached on the lattice locular wall.In another embodiment, can will strengthen wall part 40 attached on the lattice locular wall by welding operation (particularly ultrasonic bonding) or the stitching processing that carry out at the scene.Strengthening wall part 40 can be made by any suitable material.In specific embodiment, strengthen wall part 40 and make by dative locular wall identical materials.If desired, strengthening wall part 40 can also be harder than lattice locular wall, itself can bear bigger stress thereby make.

Fig. 7 is the figure of the exemplary polymer band that uses in CCS of the present disclosure.Polymeric tapes 200 has at least one polymeric outer layer 210 and at least one polymer inner layer 220.At this, show polymeric tapes with two polymeric outer layers 210.UV absorbent 230 or hindered amine as light stabilizer 240 are dispersed at least one polymeric outer layer 210.

At least one polymeric outer layer of described polymeric tapes contains UV absorbent or hindered amine as light stabilizer (HALS).The UV absorbent can be organic UV absorbent, for example benzotriazole UV absorbers or Benzophenone UV absorbent.The UV absorbent can also be inorganic UV absorbent.Described at least one polymeric outer layer can also contain other additives.This additive is selected from heat stabilizer, antioxidant, pigment, dyestuff and carbon black.

Described polymeric tapes can have the polymeric outer layer more than 1.In specific embodiment, described polymeric tapes has first polymeric outer layer and second polymeric outer layer.Polymer inner layer is between first polymeric outer layer and second polymeric outer layer.Each polymeric outer layer all comprises than the more additive of polymer inner layer.In other embodiments, described polymeric tapes has first polymeric outer layer and second polymeric outer layer.The UV absorbent that one of them polymeric outer layer comprises and the total concentration of HALS additive are than another polymeric outer layer height.

In other embodiments, described polymeric tapes is the individual layer band.

Content of additive in the described polymeric outer layer is enough to provide 2 years to about 100 years protection for polymeric tapes.Word " pact " is meant that hereinafter a value is than the set-point of modifying with word " pact " high 20% or low 20%.In specific embodiment, the amount of additive is enough to provide for polymeric tapes the protection at least 2 years.In other embodiments, the amount of additive is enough to provide for polymeric tapes the protection at least 5 years.In other specific embodiments, no matter weather conditions (for example humidity, temperature and UV light intensity) how, the amount of additive is enough to provide at least 20 years to maximum 50 years protections for polymeric tapes.Term " is enough to ... protection " be meant in the time in 2 years to 100 years, with (i) color of polymeric tapes and color harmony (ii) mechanical property remain at least 50% ability of the initial color of this polymeric tapes, tone or mechanical property.Preferably, described polymeric tapes has kept at least 80% of its initial color, tone or mechanical property.

Described polymeric outer layer comprises the UV absorbent.In specific embodiment, the UV absorbent is an organic matter, and is commercially available BTA that gets or Benzophenone, for example, and Tinuvin ^TM(producing) and Cyasorb by Ciba company ^TM(producing) by Cytec company.Described polymeric outer layer can comprise hindered amine as light stabilizer (HALS) separately, perhaps comprises hindered amine as light stabilizer (HALS) and UV absorbent.The molecule of HALS can provide long-term protection at free radical and light-initiated degraded.Particularly, HALS does not contain the phenol group.Their limiting factor (s) is their extractings or the speed that is hydrolyzed.The amount of organic UV absorbent and HALS accounts for about 0.01 weight % of described outer gross weight to about 2.5 weight %.

Described polymeric outer layer can also comprise inorganic UV absorbent.In specific embodiment, the UV absorbent is the form of solid particle.This solid particle is characterised in that to have negligible volatility and have negligible dissolubility in polymer and water, therefore is not easy to move from described polymeric outer layer or separate out.Described particle can for micron particles (for example, average diameter is about 1 micron to about 50 microns), submicron particles (for example, average diameter is that about 100 nanometers are to about 1000 nanometers) or nano particle (for example, average diameter is that about 5 nanometers are to about 100 nanometers).In specific embodiment, the UV absorbent comprises that inorganic UV absorbs the solid nano particle.With organic UV absorbent (it is soluble in polymer, even still has animal migration under the situation of HMW) difference, inorganic UV absorbent has animal migration hardly, therefore extracting and/or evaporation is had great tolerance.It is still transparent in visible spectrum that UV absorbs the solid nano particle, and it is extremely even to distribute.Therefore, they can provide protection under the condition that can not produce any influence to the color or the tone of polymer.The solid particle also utmost point is insoluble in water, thereby has improved the durability of polymer.In specific embodiment, UV absorbs nano particle and comprises the material that is selected from titanium salt, titanium oxide, zinc oxide, zinc halide and the zinc salt.In specific embodiment, it is titanium dioxide that UV absorbs nano particle.The example of the commercially available UV absorbing particles that gets is SACHTLEBEN ^TMHombitec RM 130F TN (producing), ZANO by Sachtleben company ^TMZinc oxide (producing), NanoZ by Umicore company ^TMZinc oxide (producing) and AdNano Zinc Oxide by Advanced Nanotechnology Co., Ltd ^TM(producing) by Degussa company.The UV absorbing particles can exist to the load capacity of about 85 weight % with about 0.01 weight % of the weight that accounts for described polymeric layer.In a more particular embodiment, inorganic UV absorbing particles exists to the load capacity of about 50 weight % with about 0.1 weight % of accounting for described polymeric layer gross weight.In specific embodiment, described polymeric layer comprises inorganic UV absorbent, HALS and optional organic UV absorbent.

In some specific embodiments, described polymer inner layer does not contain any organic UV absorbent, inorganic UV absorbent or HALS additive.In other specific embodiments, described polymer inner layer can comprise its total amount account for described polymeric layer gross weight greater than 0 to about 0.5 weight % organic UV absorbent and HALS.Described polymer inner layer can also comprise 0 to about 0.5 weight % the inorganic UV absorbent of its amount for described polymer inner layer gross weight.

Any layer can further comprise antioxidant.Operable concrete antioxidant comprises hindered phenol, phosphite, phosphate and aromatic amine.

Any layer can further comprise pigment or dyestuff.Can use the suitable pigment or the dyestuff that can not influence the desired properties of whole polymeric tapes significantly unfriendly.In specific embodiment, one deck at least (being generally polymeric outer layer) of polymeric tapes is coloured, like this can be approaching with the color of the GRM that is supported by described polymeric tapes.Usually, described color is any color beyond the color except black or Dark grey, particularly gray level.Coloured polymeric layer needs not to be the color of homogeneous; Can also estimate the pattern (for example dummy load) of color.In specific embodiment, described polymeric tapes can have chromatic colour, as described in the CIELAB chromaticity coordinates, for example can have red, yellow, green, blue, their mixing and they and the mixing of white or black.Preferred one group of color and tint be brown (similar), yellow (similar), taupe (similar), milky with mud with sand with soil (with gather materials similar), the outward appearance of light grey (similar), green (similar) and multiple color with grass with concrete (its for that dye, spotted, veined, have intersperse or the marbling shape).This color has the CCS of making can be used for favorable characteristics in the application that CCS is visible (that is, be not hidden or hidden by filler).For example, it is in the visible platform that CCS can be used for its skin, and can be dyed and the concordant color of environment.In other specific embodiments, described polymeric tapes contains pigment or dyestuff, but does not contain carbon black.Usually, in order to reach application aims, carbon black is considered to the UV absorbent but not pigment.

Polymeric layer can further contain filler.Polymeric layer can contain about 1 weight % of accounting for this polymeric layer gross weight filler to about 70 weight %.In other embodiments, described polymeric layer comprises about 10 weight % of accounting for this polymeric layer gross weight filler to about 50 weight %, or about 20 weight % are to the filler of about 40 weight %.

Described filler can be the form of fiber, particle, thin slice or whisker (whisker).The average grain diameter of described filler is less than about 50 microns.In other embodiments, the average grain diameter of described filler is less than about 30 microns.In other embodiments, the average grain diameter of described filler is less than 10 microns.

Multiple material can be used as filler.In some embodiments, described filler is selected from: metal oxide, metal carbonate, metal sulfate, metal phosphate, metal silicate, metal borate, metal hydroxides, silica, silicate, aluminate, aluminosilicate, fiber, whisker, industry ash, concrete powder or cement and natural fiber (for example, mestha, hemp, flax, ramie, sisal hemp, printing fiber (newprint fiber), paper mill sludge, sawdust, wood powder, carbon, aramid fiber or their mixture).

In other specific embodiments, described filler is selected from: calcium carbonate, barium sulfate, dolomite, hibbsite, mica, bentonite, kaolin, wollastonite, clay and their mixture.

Can also carry out surface treatment to described filler, to strengthen the compatibility of employed polymer in itself and the polymeric layer.In specific embodiment, used surface conditioning agent comprises adhesive or coupling agent, and it is selected from: aliphatic acid, ester, acid amides, their salt, the silicones that contains polymer or oligomer, and the organo-metallic compound such as titanate, silane and zirconates.

In other specific embodiments, the thermal conductivity of described filler is higher than the thermal conductivity of the polymer in the polymeric layer.Usually, in the weather of heat, in the lower polymeric layer of thermal conductivity, because convection current and make the temperature of polymeric layer with respect near air raise significantly (that is, the temperature of polymeric layer will be higher more than 30 ℃ than air themperature) to the absorption of direct sunlight.If polymeric layer has high thermal conductivity, then its temperature is with respect near the just rising a little of temperature (that is, than high about 1 ℃ to 30 ℃ of air themperature) of air.Quicken dynamics according to the Arrhenius type, the temperature of this rising can be quickened the degraded of polymer, and in addition, the temperature of this rising also can be quickened evaporation, hydrolysis and/or the extracting of additive.Because most polymers (particularly MDPE and HDPE) has lower thermal conductivity, so the accelerated degradation that is caused by thermal conductance can have influence on the life-span of the Earthwork Products (particularly CCS) of using these polymer unfriendly.Surprisingly, have been found that the thermal conductivity of polymer and thermal capacitance can raise when mineral filler and these mixed with polymers.This can reduce the speed of the accelerated degradation that is caused by thermal conductance significantly, thereby makes the life-span be prolonged, and the degraded that UV causes is had higher stability.In addition, the raising of thermal conductivity tends to improve the creep resistance that is under mechanical load and the UHH condition.The raising of thermal conductivity is a particular importance for the geotechnique surpass 70 ℃ or higher zone in the surface temperature of CCS in uses.Usually, on the earth 42 latitudes to the north of the equator and on the south the equator high temperature area between 42 latitudes have this temperature extremes.In addition, the raising of thermal conductivity also can reduce the degree of degraded (it has the Arrhenius one-level usually and quickens dynamics).In specific embodiment, polymeric layer comprises the high filler of thermal conductivity, and this filler is selected from: the mineral of metal carbonate, metal sulfate, metal oxide, metal, metallic cover and oxide, aluminosilicate and mineral filler.

The adding mineral filler also can reduce the CTE of polymer.Aspect reduction CTE, whisker and fiber are the most effective.In polymeric layer, introduce the processing characteristics that mineral filler also can improve polymeric layer.When having filler in the melt, can be in melt kneading, extrude in the process with moulding by reducing moment of torsion and reduce heat and generate.This is a particular importance in the process of melt kneading, and the melt kneading process is an exothermal process, and this process can make depolymerization.Surprisingly, when having introduced filler, with respect to unloaded HDPE or MDPE, only need less mechanical energy just can carry out melt kneading to the compound of unit mass, therefore the relative output of per unit of power increases, and the heat in the described compound of extruder generates minimizing.In addition, in mixing and extrusion, the resistance of shearing is lower than HDPE.As a result, produced less gel, and the degraded of less generation polymer.This can have at extruder produces thin band under the condition of same torque, and has therefore improved productive rate (its unit length by time per unit is measured).

In addition, be surprisingly found out that,, can produce cooperative effect, thereby make loss speed and the degradation rate of UV absorbent or HALS all reduce when polymeric layer comprises mineral filler and comprises any a time among UV absorbent or the HALS.Because mineral filler makes thermal conductivity improve, the heat that above-mentioned cooperative effect helps to reduce in the polymeric layer generates.

Polymeric layer can further comprise and stop particle (barrier particle).The described particle that stops is the inorganic particle with high barrier properties (barrier property).Term " barrier properties " is meant the ability of the following aspect that inorganic particle has: (1) reduces the speed that additive is spread in its surrounding environment by polymeric layer, (2) reduce the speed that the hydrolysing agent such as water, proton and hydroxide ion is spread in polymeric layer by surrounding environment, and/or (3) reduce free radical and/or the generation/migration of ozone in polymeric layer.In the life span of polymeric tapes, the main cause of additive losses is because diffusion, erosion, hydrolysis or evaporation.(except that other reasons) depended in this diffusion or the degraded of additive: the molecular weight of additive, the structure of main chain, the miscibility in polymer substrate, ion have situation and a temperature.Therefore, the barrier properties that improves polymeric tapes will improve the durability of polymeric tapes.Preferably, stop that particle is a nano particle.In specific embodiment, stop that particle is selected from: the ceramic sheet and the glass flake of clay, organically-modified clay, nanotube, sheet metal, ceramic sheet, metallic cover.Preferably, stop that particle is that the surface area of per unit mass reaches maximum thin slice.Comprising the polymeric layer that stops particle is characterised in that: with respect to not having the polymeric layer that stops particle, all slow down in the speed of the extracting that comprises additive described in the polymeric layer that stops particle, evaporation and hydrolysis.Stop that particle can exist to the load capacity of about 85 weight % with about 0.01 weight % of accounting for polymeric layer weight.In a more particular embodiment, stop that particle can exist to the load capacity of about 70 weight % with about 0.1 weight % of accounting for polymeric layer.Comprise the polymeric layer that stops particle molecular weight be lower than the permeability of about 1000 daltonian molecules, than make by same combination but do not comprise the permeability low at least 10% of the polymeric tapes that stops particle.Comprise the polymeric layer that stops particle molecular weight be lower than the permeability of about 1000 daltonian molecules, than make by HDPE but do not comprise the permeability low at least 25% of the polymeric tapes that stops particle.

It should be noted that each polymeric layer all comprises polymer.In specific embodiment, described polymer is selected from HDPE and medium density polyethylene (MDPE).In other embodiments, compare with original polyethylene, described polymer itself has the anti-UHH performance of improvement.Described this polymer is selected from: (i) vinyl-acrylate copolymer and terpolymer; (ii) ethylene-methyl acrylate copolymer and terpolymer; (iii) acrylate copolymer and terpolymer; (iv) aliphatic polyester; (v) fatty polyamide; (vi) aliphatic polyurethane; Their mixture; They and at least a polyolefinic mixture.Commercially available vinyl-acrylate copolymer that gets and terpolymer comprise Elvaloy ^TM(producing) or Lotryl by Du-Pont company ^TM(producing) by Arkema company.In specific embodiment, each polymeric layer in the polymeric tapes is all by identical polymer.

Polymeric layer can further comprise the overall structure that increases frictional force.The increase of frictional force can reduce moving of GRM that polymeric tapes supports with respect to it.The structure of this increase frictional force normally forms by mold pressing.This structure can comprise following pattern, and this pattern is selected from: pattern, embossed pattern, eyelet, finger-like extension, hair-like extension, corrugated extension, coextrusion lines, point, coarse patterns and their combination of band texture.

The gross thickness of described polymeric tapes can for about 0.1mm to about 5mm, overall width is extremely about 5 for about 10mm, 000mm.Usually, HALS, organic UV absorbent and the mean concentration of inorganic UV absorbent in polymeric outer layer, higher about 1.2 times to about 10 times than HALS, organic UV absorbent and inorganic UV absorbent in the mean concentration that runs through in the whole band (that is, comprising polymer inner layer).

Some embodiments of the polymeric tapes that is used to make disclosure CCS have been described above.Described polymeric tapes can be the single or multiple lift band.In specific embodiment, described polymeric tapes has at least one polymer inner layer and at least one polymeric outer layer.Described polymeric outer layer is exposed under the daylight of direct projection, and polymer inner layer then is not exposed under the daylight of direct projection.In other specific embodiments, described polymeric tapes has two polymeric outer layers.As indicated above, each layer all comprises polymer, additive, the filler of anti-UHH and/or stops particle.Now, further describe some specific embodiments.

A specific embodiment is the polymeric tapes of the anti-UHH of individual layer.This polymeric tapes comprises polymer, UV absorbing particles and HALS.Described polymer can be polyolefin or polymer of anti-UHH and their combination.Described polymeric tapes can further comprise filler, pigment, dyestuff and/or stop particle, thereby guarantees that polymer is stable under the UHH condition.Described polymeric tapes has chromatic colour.Even comprise multiple additives, the color of described polymeric tapes is mainly decided by pigment that is used to form color or dyestuff.

In another specific embodiment, the polymeric tapes of described anti-UHH is a multi-layer tapes, and have at least one such layer, this layer comprise the MDPE of 100% (w/w) at the most or HDPE, at the most the linear low density polyethylene (LLDPE) of 50% (w/w) (LLDPE), the additive that is selected from UV absorbent and HALS of filler, 0.005% to 5% (w/w) of 70% (w/w) and 0.005% to 50% (w/w's) stops particle at the most.

In another specific embodiment, the polymeric tapes of described anti-UHH is a multi-layer tapes, and have at least one such layer, this layer comprise the MDPE of 100% (w/w) at the most or HDPE, at the most the copolymer of the ethylene-acrylate of 100% (w/w) or methacrylate or terpolymer, the additive that is selected from UV absorbent and HALS of filler, 0.005% to 5% (w/w) of 70% (w/w) and 0.005% to 50% (w/w's) stops particle at the most.

In another specific embodiment, the polymeric tapes of described anti-UHH is a multi-layer tapes, and has at least one and comprise among polymer, filler and UV absorbent or the HALS any one layer.This layer can further comprise the particle that stops of 0.005% to 50% (w/w).With respect to comprising identical additive and having for the HDPE layer of same size, extracting, evaporation and/or the hydrolysis rate of UV absorbent all reduce by 10% at least in the described layer.

The disclosure provides the method that is used to make described polymeric layer and/or band.This method comprises the step of the melt kneading in extruder with at least a polymer and at least a additive.Described extruder can be multi-screw extruder, particularly double screw extruder.In other embodiments, described extruder is that corotation changes double screw extruder, and the ratio that particularly it is characterized by L/D is that about corotation of 20 to 50 changes double screw extruder.Described extruder can be equipped with at least one side feeder, at least one exhaust outlet (being used to remove steam and air) and optional vacuum discharge mouth (being used to discharge volatile monomers and gaseous compound).Then, the gained mixture is pumped downstream, thereby form film, band, sheet, bead, particle, powder or extruded product.

Can prepare the masterbatch that comprises multiple additives, wherein masterbatch is meant dispersion and/or the solution after the concentrating of all additives in the polymer support or portions additive.Additive masterbatch is fed in the extruder by funnel, and other composition melt kneading in composition.Then, the fused mass in the extruder is pumped into downstream in the special-purpose mixed zone.Then, filler is fed in the mixed zone by top or side loader.The air of carrying secretly and the moisture of absorption are discharged by exhaust outlet.With the further melt kneading of the mixture of gained, be dispersed in the mixture to all no longer agglomerating and uniform filling up to most agglomerate till.Volatile matter of carrying secretly and/or accessory substance can be discharged by optional vacuum discharge mouth.Then, mould is passed through in the gains pumping, thereby form bead or band or directly form final polymeric tapes.Can be for other modes of selecting for use, can be in second extruder or in make-up machine with the bead fusion once more of gained, moulding then.

In another step, in polymeric layer and/or polymeric tapes, form the overall structure that increases frictional force.Described structure can or be extruded formation by mold pressing, punching press.Particularly, can carry out embossing with calender and form embossing.

Polymer of the prior art makes in reactor.Reactor can be attached to small amounts of monomer in a kind of main chain.But the preparation polymer is different from and prepares polymer in extruder in reactor.Reactor can prepare the polymer of anti-UV, for example vinyl-acrylate copolymer and terpolymer, ethylene-methyl acrylate copolymer and terpolymer, acrylate copolymer and terpolymer.But reactor can not prepare the blend of the fine dispersion of strong heat resistant polymer and the polymer of anti-UHH.Reactor can not dispersing nanometer particle or filler.Particularly, be difficult to uniform filling be dispersed in the reactor.Yet, can easily filler, nano particle and more than one different polymer be evenly dispersed in the extruder.Extruder technology can be carried out almost unlimited mixing.Corotation changes multi-screw extruder, particularly corotation and changes double screw extruder, can disperse fine grained and different polymer very finely.Do not carry out this mixing completely, the short-term performance of resulting polymers and long-term behaviour all are relatively poor.

Three-dimensional cellular confinement system is to be made by the polymeric tapes of many anti-UHH.In general, every band seems all to present the wavy pattern with peak and paddy.The peak of a band is connected with the paddy of another root band, has formed honey comb like pattern thus.In other words, stack described band is parallel to each other, and interconnect by the physical engagement position of a plurality of separation, wherein said physical engagement position is spaced apart from each other by the part that does not connect.Described physical engagement position can be by welding, engage, sew up or they make up arbitrarily and form.In specific embodiment, weld by hyperacoustic method at described physical engagement position.In other embodiments, hyperacoustic method welding is not pressed by having in described physical engagement position.In each embodiment, the distance between the adjacent physical engagement position is extremely about 1 for about 50mm, 200mm.

Polymeric tapes of the present disclosure has multiple required performance.By adding filler, described polymeric tapes has the thermal conductivity of improvement to avoid the temperature rising and to improve welding performance.Described filler can also reduce CTE, thus the dimensional stability that can be improved.Stop particle by adding, reduced the extracting and/or the evaporation of additive, and reduced moisture, proton or hydroxide ion entering in polymeric tapes.By using the UV absorbent granules, can obtain to keep the anti-UV characteristic of the improvement that reaches 100 years.

CCS of the present disclosure has the weld strength and the durability of improvement.Compare with the polymeric tapes that is made of the original HDPE additive identical with load capacity, described weld strength exceeds at least 10%.When the band after will welding carried out permanent load, their crash rate was than the crash rate low at least 10% of the welding of belt that is made of the original HDPE additive identical with load capacity.In addition, weld cycle is than the weld cycle of the polymeric tapes that is made of the original HDPE additive identical with load capacity soon at least 10%.When adopting ultrasonic bonding, make polyethylene be difficult to comparatively speaking fetch owing to poly density, degree of crystallinity and coefficient of friction are all lower and weld, so the Weldability of this improvement is very significant by supersonic welding.

Importantly protect the welding position that deterioration does not take place.In CCS, the welding position is unstable relatively point, and in case lost efficacy in a welding position, then its load just is transferred to other welding position, thereby increased the load of these welding positions, and increased the possibility that also lost efficacy in these welding positions.The weld strength that makes the welding position have raising can prevent that above-mentioned situation from taking place.

CCS of the present disclosure has lower extracting, evaporation or hydrolysis rate.When at ambient temperature, when in water, scheduling to last about 6 months to 24 months extracting, HDPE band identical with thickness and that the mean concentration of HALS and UV absorbent is all identical in whole HDPE band (comparing with the layer among the CCS of the present disclosure) is compared, the extracting speed low at least 10% of HALS and/or organic UV absorbent in the layer of CCS of the present disclosure.Residual quantity in the polymer can be measured by GC, HPLC or similar method.

By Δ E change color and elastic loss (measuring by elongation at break) are measured, identical with thickness and in whole HDPE band all identical HDPE band of mean concentration of HALS and/or organic UV absorbent compare the degradation rate among the CCS at least low 10%.

To further specify the disclosure in following non-limiting example, it should be understood that these embodiment are illustrative, the disclosure is not subjected to the restriction of the listed material of this paper, condition, technological parameter etc.Unless otherwise mentioned, otherwise all ratios are weight percent.

Embodiment

Embodiment 1

The preparation mixture (INV1-INV5) of 5 kinds of anti-UHH and a kind are with reference to mixture.Their composition is shown in Table 1.In addition, every kind of mixture all comprises 0.5% TiO ₂Pigment (Kronos ^TM2222, produce by Kronos company) and 0.2% PV Fast Brown HFR ^TMBrown pigments (producing) by Clariant company.Polymer, additive and pigment are fed in the main funnel of the double screw extruder that corotation changes (it moves under 100-400 RPM, bucket temperature are 180 to 240 degrees centigrade condition).With the polymer fusion, and mediate dispersing additive in the district at least one.Filler is provided by the side loader.Steam and gas are discharged by the atmospheric exhaust mouth, and the product of gained is granulated in strand pelletizer.

The composition of table 1 polymer

Composition	With reference to mixture 1	INV1	INV2	INV3	INV4	INV5
							HDPE(Kg)	100	100	100	50	50	50
LLDPE(Kg)	0	0	0	0	50	50
							Ethylene-acrylate (Kg)	0	0	0	50	0	0
Mica (Kg)	0	20	20	20	20	20
							Organic UV absorbent (Kg)	0.15	0.5	0.5	0.5	0.5	0.5
Inorganic UV absorbent (Kg)	0	0	1	1	1	1
							HALS(Kg)	0.15	0.5	0.5	0.5	0.5	0.5
Nanoclay (Kg)	0	0	0	0	0	1

HDPE resin-HDPE M 5010 is produced by Dow company.

LLDPE resin-LL 3201 is produced by Exxon Mobil company.

Ethylene-acrylate resin-Lotryl ^TM29MA03 is produced by Arkema company.

Mica-lotalk ^TMUltra-fine, produce by Yokal company.

Organic UV absorbent-Tinuvin ^TM234, produce by Ciba company.

Inorganic UV absorbent-SACHTLEBEN ^TMHombitec RM 130F TN is produced by Sachtleben company.

HALS-Chimassorb ^TM944, produce by Ciba company.

Nanoclay-Nanomer ^TM131 PS are produced by Nanocor company.

Next, 5 kinds of polymeric tapes ST1-ST5 of preparation and a kind are with reference to band.All bands are all made on the sheet material extruding production line, and wherein said sheet material extruding production line comprises and is used to extrude the main single screw extrusion machine in intermediate layer and is used to extrude two outer field single screw extrusion machines.The thickness in intermediate layer is 0.8mm, and outer field thickness is 0.20mm.The composition of band is shown in Table 2.The title of polymer is according to shown in the table 1 in each layer.

The composition of table 2 band

Band number	With reference to band A	ST1	ST2	ST3	ST4	ST5
							Outer 1	With reference to mixture 1	INV1	INV2	INV3	INV4	INV5
The intermediate layer	With reference to mixture 1	HDPE	HDPE	HDPE	HDPE	HDPE
							Outer 2	With reference to mixture 1	INV1	INV2	INV3	INV4	INV5

HDPE resin-HDPE M 5010 is produced by Dow company.Do not contain UV absorbent or HALS additive.

Estimate

By in Heraeus Xenotest 1200W WOM, be 60% in relative humidity, blackboard temperature is that 60 ℃, dry cycle time are 102 minutes and wet circulation timei to be to carry out accelerated ageing under 18 minutes the condition, estimates the anti-UHH characteristic of band.Through after 10,000 hours aging, measure relative loss ((initial elongation rate-finally percentage elongation)/initial elongation rate of color distortion (Δ E) and elongation at break).The result is summarized in the table 3.

The result of table 3 burn-in test

Band number	With reference to band A	ST1	ST2	ST3	ST4	ST5
							ΔE	22	12	10	6	10	8
The relative loss of elongation at break (%)	60	20	17	12	12	12

Embodiment 2

Prepare 5 kinds of mixture INV6-INV10 and a kind with reference to mixture.Their composition is shown in Table 4.In addition, every kind of mixture all comprises 0.5% TiO ₂Pigment (Kronos ^TM2222, produce by Kronos company) and 0.2% PV Fast Brown HFR ^TMBrown pigments (producing) by Clariant company.Polymer, additive and pigment are fed in the main funnel of the double screw extruder that corotation changes (it moves under 100-400RPM, bucket temperature are 260 to 285 degrees centigrade condition).With the polymer fusion, and mediate dispersing additive in the district at least one.Filler is provided by the side loader.Steam and gas are discharged by the atmospheric exhaust mouth, and the product of gained is granulated in strand pelletizer.

The composition of table 4 polymer

Composition	With reference to mixture 2	INV6	INV7	INV8	INV9	INV10
							The HDPE (Kg) that MA is functionalized	0	100	100	70	40	40
Original HDPE (Kg)	100	0	0	0	0	0
							LLDPE(Kg)	0	0	0	0	30	0
Ethylene-acrylate (Kg)	0	0	0	0	0	30
							The PET (Kg) of recycling	0	25	25	25	25	25
Mica (Kg)	0	20	0	20	20	20
							Organic UV absorbent (Kg)	0.15	0.35	0.15	0.15	0.15	0.15
Inorganic UV absorbent (Kg)	0	0	1	1	1	1
							HALS(Kg)	0.15	0.15	0.15	0.15	0.15	0.15
Nanoclay (Kg)	0	0	0	1	0	1

HDPE resin-HDPE M 5010 that MA is functionalized, Dow company produces, and maleic anhydride (MA) graft reaction by 0.25-0.40% in extruder obtains.

Original HDPE-HDPE M 5010 is produced by Dow company.Not functionalized through MA.

Ethylene-acrylate resin-Lotryl ^TM29MA03 is produced by Arkema company.

Mica-Iotalk ^TMUltra-fine, produce by Yokal company.

Organic UV absorbent-Tinuvin ^TM234, produce by Ciba company.

Inorganic UV absorbent-SACHTLEBEN ^TMHombitec RM 130F TN is produced by Sachtleben company.

HALS-Chimassorb ^TM944, produce by Ciba company.

Nanoclay-Nanomer ^TMI31 PS is produced by Nanocor company.

Next, 5 kinds of polymeric tapes ST6-ST10 of preparation and a kind are with reference to band.All bands are all made on the sheet material extruding production line, and wherein said sheet material extruding production line comprises the main single screw extrusion machine that is used for the intermediate layer and is used for two outer field single screw extrusion machines.The thickness in intermediate layer is 0.8mm, and outer field thickness is 0.20mm.The intermediate layer is made by HDPE M 5010 (being produced by Dow company), and skin is made by the composition in the table 4.Their composition and the composition shown in the table 2 are similar, wherein have two skins that are made of reference group compound 2 with reference to band B, and ST6 has two skins that are made of composition I NV6, or the like.

Estimate

In the high temperature area, estimate the UHH tolerance of band.Band was heated 7 days in 110 ℃ baking box, measure the relative loss of elongation at break then.This process simulation owing to the evaporation cause additive losses the time situation.

Then, in order to measure the UHH tolerance, band is experienced 7 days in 85 ℃ water hydrothermal aging process, thus make additive by extracting and hydrolysis.Then, with band in Heraeus Xenotest 1200W WOM, at relative humidity=60%, blackboard temperature=60 ℃, did circulation in 102 minutes, be exposed under the alpine light under the wet cycling condition in 18 minutes.After 10,000 hours ageing process, measure the relative loss of color distortion (Δ E) and elongation at break.The result is summarized in the table 5.

The result of table 5 burn-in test

Band number	With reference to band B	ST6	ST7	ST8	ST9	ST10
							The relative loss of elongation at break after the oven heat	44	21	25	15	16	12
Δ E behind the experience hydrothermal aging	28	12	11	10	16	9
							The relative loss (%) of elongation at break behind the experience hydrothermal aging	58	24	29	32	23	23

Then, under 20MHz, weld long 20 bands that constitute by each composition of 100mm, obtain 10 pairs of bands with ultrasonic variable amplitude bar.Select 5 pairs of bands constituting by each composition at random, measure their tensile strength (T=0) during after welding 48 hours.Then, with these 5 pairs of bands experience 21 days in 110 ℃ baking box ageing process, then, measure their tensile strength (T=21 days) once more.The mean value of measuring is as shown in table 6.

Weld strength after table 6 heat ageing

Band number	With reference to band B	ST6	ST7	ST8	ST9	ST10
							Weld strength (N) T=0	1380	1700	1550	1830	1750	1750
Weld strength (N) T=21 days (under 110 ℃)	450	1230	1240	1650	1430	1510

Although described specific embodiment, the unforeseeable at present or present alternative that possibly can't predict, alter mode, variation pattern, improvement mode and basic equivalents all may the defending party to the application or others skilled in the art's discoveries.Therefore, claims of enclosing of submission (they may be modified) are intended to contain all these alternative, alter mode, variation pattern, improvement mode and basic equivalents.

Claims (39)

1. cellular confinement system with durability, it comprises many polymeric tapes,

Wherein every polymeric tapes all comprises at least one polymeric outer layer and at least one polymer inner layer, and wherein one deck more tolerates UV light, humidity or heat (UHH) than original high density polyethylene (HDPE) (HDPE) at least; And

Wherein contain UV absorbent or hindered amine as light stabilizer (HALS) at least one polymeric outer layer.

2. the described cellular confinement system of claim 1, wherein every polymeric tapes all comprises first polymeric outer layer and second polymeric outer layer, and wherein all polymer inner layer are all between described first polymeric outer layer and described second polymeric outer layer.

3. the described cellular confinement system of claim 1 contains the additive less than 0.5 weight % of the weight that accounts for this at least one polymer inner layer in wherein said at least one polymer inner layer.

4. the described cellular confinement system of claim 1 wherein also contains at least one skin of every polymeric tapes and is selected from antioxidant, pigment, dyestuff, carbon black and stops additive in the particle.

5. the described cellular confinement system of claim 4, wherein said antioxidant is selected from hindered phenol, phosphate, phosphate and aromatic amine.

6. the described cellular confinement system of claim 4, wherein said pigment or dyestuff do not make described polymeric tapes present black or lead.

7. the described cellular confinement system of claim 4, the wherein said particle that stops is selected from: the ceramic sheet and the glass flake of clay, organically-modified clay, nanotube, sheet metal, ceramic sheet, metallic cover.

8. the described cellular confinement system of claim 1, contain the UV absorbent in wherein said at least one polymeric outer layer, this UV absorbent is the inorganic particle that comprises following material, and described material is selected from: titanium salt, titanium oxide, zinc oxide, zinc halide and zinc salt.

9. the described cellular confinement system of claim 8, wherein said UV absorbent inorganic particle are that average diameter is the nano particles of about 5 nanometers to about 100 nanometers.

10. the described cellular confinement system of claim 1 wherein also comprises filler in one deck at least.

11. the described cellular confinement system of claim 10, wherein said filler are whisker or fibrous, and its average grain diameter is less than 50 microns.

12. the described cellular confinement system of claim 10, wherein said filler is selected from: mineral filler, metal oxide, metal carbonate, metal sulfate, metal phosphate, metal silicate, metal borate, metal hydroxides, silica, silicate, aluminate, aluminosilicate, fiber, whisker, industry ash, concrete powder or cement, natural fiber, mestha, hemp, flax, ramie, sisal hemp, printing fiber, paper mill sludge, sawdust, wood powder, carbon, aramid fiber and their mixture.

13. the described cellular confinement system of claim 10, wherein said filler are the mineral that are selected from calcium carbonate, barium sulfate, dolomite, hibbsite, mica, bentonite, kaolin, wollastonite, clay and their mixture.

14. the described cellular confinement system of claim 10, wherein said filler carries out surface treatment with adhesive or coupling agent, described adhesive or coupling agent are selected from: aliphatic acid, ester, acid amides, their salt, the silicones that contains polymer or oligomer, organo-metallic compound, titanate, silane and zirconates.

15. the described cellular confinement system of claim 10, wherein said filler has high thermal conductivity, and be selected from: the mineral of metal carbonate, metal sulfate, metal oxide, metal, metallic cover and oxide, aluminosilicate, and mineral filler.

16. the described cellular confinement system of claim 1 contains BTA or Benzophenone as the UV absorbent in wherein said at least one polymeric outer layer.

17. the described cellular confinement system of claim 1, the amount of wherein said UV absorbent or described HALS are to account for about 0.01 weight % of described at least one outer field weight to about 2.5 weight %.

18. the described cellular confinement system of claim 1 also comprises 0 UV absorbent and hindered amine as light stabilizer to about 0.25 weight % of the weight that accounts for this at least one polymer inner layer in wherein said at least one polymer inner layer.

19. the described cellular confinement system of claim 1, at least one polymeric layer in the wherein said every polymeric tapes all comprises such polymer independently, and this polymer is selected from: high density polyethylene (HDPE) (HDPE), medium density polyethylene (MDPE), ethene-propionic ester copolymer and terpolymer, ethylene-methyl acrylate copolymer and terpolymer, acrylate copolymer and terpolymer, aliphatic polyester, fatty polyamide, aliphatic polyurethane, their mixture and they and at least a polyolefinic mixture.

20. the described cellular confinement system of claim 1, at least one polymeric layer in the wherein said every polymeric tapes all comprises the structure that increases frictional force, this structure is selected from: pattern, embossed pattern, eyelet, finger-like extension, hair-like extension, corrugated extension, coextrusion lines, point, the coarse patterns of band texture, and their combination.

21. the described cellular confinement system of claim 1, wherein the gross thickness of every polymeric tapes for about 0.1mm to about 5mm, overall width is about 10mm about 500mm extremely, total length is that about 10mm is extremely about 5,000mm.

22. the described cellular confinement system of claim 1, wherein every polymeric tapes all comprises first polymeric outer layer and second polymeric outer layer, and one of them polymeric outer layer has the UV absorbent and the HALS additive of higher concentration than another polymeric outer layer.

23. the described cellular confinement system of claim 1, wherein the one deck at least in every polymeric tapes all comprises: the MDPE of 100 weight % or HDPE, the linear low density polyethylene (LLDPE) of 50 weight % (LLDPE), the particle that stops that is selected from additive among UV absorbent and the HALS and 0.005 weight % to 50 weight % of mineral filler, 0.005 weight % to the 5 weight % of 70 weight % at the most at the most at the most.

24. the described cellular confinement system of claim 1, wherein the one deck at least in every polymeric tapes all comprises: the MDPE of 100 weight % or HDPE, the vinyl-acrylate copolymer of 100 weight % or terpolymer, the particle that stops that is selected from additive among UV absorbent and the HALS and 0.005 weight % to 50 weight % of mineral filler, 0.005 weight % to the 5 weight % of 70 weight % at the most at the most at the most.

25. cellular confinement system with durability, it comprises many single polymer layer bands, wherein every polymeric tapes all comprises polymer, organic UV absorbing particles and hindered amine as light stabilizer (HALS), this cellular confinement system of amount sufficient to guarantee of wherein said polymer, organic UV absorbing particles and hindered amine as light stabilizer is under the harsh climate condition, in the situation out of doors, can keep stable color and physical property at least in 2 years.

26. the described cellular confinement system of claim 25, wherein every polymeric tapes further also comprises filler, this filler is selected from: the mineral of metal carbonate, metal sulfate, metal oxide, metal, metallic cover and oxide, aluminosilicate, and mineral filler.

27. the described cellular confinement system of claim 25, wherein every polymeric tapes further also comprises and stops particle, this stops that particle is selected from: the ceramic sheet of clay, organically-modified clay, nanotube, sheet metal, ceramic sheet, metallic cover, and glass flake.

28. the described cellular confinement system of claim 25, wherein said polymer is selected from vinyl-acrylate copolymer and terpolymer.

29. the described cellular confinement system of claim 25, wherein every polymeric tapes further also comprises the structure that increases frictional force, this structure is selected from: pattern, embossed pattern, eyelet, finger-like extension, hair-like extension, corrugated extension, coextrusion lines, point, the coarse patterns of band texture, and their combination.

30. the described cellular confinement system of claim 25 further also comprises non-black or non-dimmed pigment or dyestuff.

31. a ultraviolet resistance, heat or moist cellular confinement system, it comprises many polymeric tapes,

Every polymeric tapes all comprises at least one polymeric layer that contains UV absorbent and polymer, and wherein said polymer is selected from: ethene-propionic ester copolymer and terpolymer, ethylene-methyl acrylate copolymer and terpolymer, acrylate copolymer and terpolymer, aliphatic polyester, fatty polyamide, aliphatic polyurethane, their mixture and they and at least a polyolefinic mixture;

Wherein first polymeric tapes stacks with second polymeric tapes is parallel, and first polymeric tapes is connected with described second polymeric tapes by a plurality of discrete physical engagement positions, and wherein said physical engagement position is spaced apart from each other by the part that does not connect on the described polymeric tapes.

32. the described cellular confinement system of claim 31, wherein said physical engagement position by welding, engage, sew up or they make up arbitrarily and form.

33. the described cellular confinement system of claim 31, wherein said physical engagement position forms by ultrasonic method.

34. the described cellular confinement system of claim 31, wherein the distance between the physical engagement position of Xiang Lianing is extremely about 1 for about 50nm, 200mm.

35. the described cellular confinement system of claim 31, wherein the weld strength at the physical engagement position of the polymeric tapes that is constituted with the UV absorbent that is equated with load capacity by original HDPE is compared, and the final weld strength at described physical engagement position will exceed at least 10%.

36. the described cellular confinement system of claim 31, wherein the crash rate at the physical engagement position of the polymeric tapes that is constituted with the UV absorbent that is equated with load capacity by original HDPE is compared, and the crash rate at described physical engagement position will hang down at least 10%.

37. the described cellular confinement system of claim 31, the thermal coefficient of expansion of wherein said first polymeric tapes are 150ppm/ ℃ or lower.

38. the cellular confinement system with durability, it comprises the polymeric tapes of the many light of anti-UV, humidity or heat (UHH),

Every polymeric tapes all comprises at least one polymeric outer layer and at least one polymer inner layer,

Wherein said at least one polymeric outer layer comprises following blend polymer: (a) ethylene-acrylic acid ester polymer; (i) high density polyethylene (HDPE) (HDPE) or (ii) medium density polyethylene (MDPE) one in these two; And (b) (i) UV absorbent or (ii) hindered amine as light stabilizer (HALS) one in these two.

39. the described cellular confinement system of claim 38, wherein said ethylene-acrylic acid ester polymer is selected from: vinyl-acrylate copolymer and terpolymer and ethylene-methyl acrylate copolymer and terpolymer.

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