CN202482711U - Sleeper - Google Patents
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- CN202482711U CN202482711U CN2012200285661U CN201220028566U CN202482711U CN 202482711 U CN202482711 U CN 202482711U CN 2012200285661 U CN2012200285661 U CN 2012200285661U CN 201220028566 U CN201220028566 U CN 201220028566U CN 202482711 U CN202482711 U CN 202482711U
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Abstract
The utility model discloses a sleeper which comprises an inner core and an outer surface layer. The inner core is one kind or several kinds of concrete, glass fiber reinforcement unsaturation polyester resin compound materials, a wood residue reinforcement phenolic resin matrix composite material and a rubber composite material. The outer surface layer of the compound sleeper is glass fabric cloth treated by a coupling agent and soaked by polyurethane resin. The sleeper is good in elasticity, easy to process, corrosion-resistant and insulating. The sleeper can resolves the technical problems that an existing sleeper is short in service life, poor in elasticity, easy to crack and easy to break.
Description
Technical field
The utility model relates to by a kind of sleeper, is specifically related to a kind of sleeper that contains composite material, belongs to field of compound material.
Background technology
Sleeper often is used to carrying object, is indispensable material in railway construction, the laying of dedicated track traveling equipment and the load bearing equipment field.According to the difference of its composition material, sleeper mainly is divided into wooden crossties, steel concrete sleeper, steel sleeper and composite material sleeper.But all have the self-defect problem, though steel sleeper firm and durable, cost high heavy being difficult for moves, and elasticity is little; Though the wooden good springiness of wooden pillow is in light weight, make simply, good insulation preformance easy-weathering cracking, corrosion resistance is relatively poor, and application life is short, and wood consumption is big; Though steel concrete sleeper long service life, good stability but because its poor flexibility, the silencing and damping effect is also poor, and is prone to the crack in use for some time, influences safety of railway traffic.
Along with the development of technology, at present the composite material sleeper becomes emerging material sleeper, and this composite material sleeper produces the performance of weight when having than stronger absorption train driving such as wooden crossties, thereby has obtained paying close attention to widely in the railway construction field.Kind according to composite material is different, and it mainly is divided into rubber and plastic composite sleeper, glass fiber reinforced plastic composite sleeper and polyurethane synthesis wooden sleeper.
The rubber and plastic composite sleeper is with junked tire or reclaims thermoplastic elastomer (TPE) that plastics the make shell as sleeper that with the inner core of concrete as sleeper, adopt expressing technique to make, it has shock resistance, corrosion-resistant, high-intensity characteristics.Though it can be with a large amount of junked tires and waste plastics recovery utilization on technical application; Has environment protection significance; But this product processes is complicated; Of paramount importance is with above-mentioned source and unsettled waste old with reclaim the shell of plastics as sleeper, so whether have weatherability and resistance to ag(e)ing is difficult to confirm for this kind sleeper.
The glass fiber reinforced plastic composite sleeper is made up of glass fiber reinforced plastic cylindrical shell and the packing material that is arranged in the glass fiber reinforced plastic cylindrical shell; Wherein, the glass fiber reinforced plastic cylindrical shell is to be raw material with unsaturated polyester resin, fibre glass roving, powder filler, adopts technologies such as winding, pultrusion, hand paste to be made, and packing material generally adopts high strength foam materials and methods of making.The glass fiber reinforced plastics composite material sleeper that makes has excellent mechanical property; But because so it adopts technology production efficiencys such as winding, pultrusion, hand paste extremely low; Because the sleeper of the type adopts unsaturated polyester resin as raw material; And the stability of unsaturated polyester resin and weatherability are poor, so cause the product stability of this kind glass fiber reinforced plastic composite sleeper and weatherability all relatively poor.
The polyurethane synthesis wooden sleeper is by foaming polyurethane resin dipping continuous glass fibre, makes thin sheet material earlier through continuous forming process, afterwards again with its range upon range of being bonded.Wherein polyurethane (be called for short PU) is the polymer of being processed by raw materials such as chain extender such as polyisocyanates and PPG or PEPA or little molecular polylol, polyamine or water or crosslinking agents.Through changing raw material type and composition, can change product form and performance thereof significantly, obtain from softness to hard final products.That this kind sleeper has is in light weight, corrosion-resistant, good insulation preformance, be convenient to the characteristics of field machining and construction.CN101314931A discloses a kind of novel synthesis wooden sleeper in the prior art; This sleeper is made up of the long glass fibres of polyurethane foam and unidirectional array; Wherein long glass fibres is evenly arranged on the sleeper length direction, is distributed in the polyurethane foam matrix.In this prior art, the arrangement of glass fiber is single vertical arrangement in this composite material sleeper, and the lateral attitude that the shearing arrangement of reinforcement therefore is not set is easily because of the crooked destruction that causes interlaminar shear, thereby makes sleeper the crack global failure occur.In addition; CN101323701A discloses the hard polyurethane synthetic material sleeper that a kind of long glass fibres strengthens in the prior art; In the preparation of this sleeper; Need glass fiber be wrapped in the said mould,, thereby form polyurethane sleeper by the glass fiber parcel again to said dies cavity spraying polyurethane compound.Wherein, Because the winding of said glass fiber is to adopt winding technology of the prior art; So it all is to adopt single vertical arrangement mode, so the sleeper that utilizes this method of the prior art to prepare exists such as the technical problem among the CN101314931A too.
In addition; The sleeper that a kind of composite material is processed is also disclosed at U.S. Pat 6605343B1; This sleeper also constitutes at the material outer layer parcel spumescence thermosetting resin that constitutes with filler and thermosetting resin; Wherein, described spumescence thermosetting resin longitudinally is arranged in long glass fibres on the thermosetting resin and forms.The destruction of interlaminar shear when so there is meeting equally owing to the stressed bending of sleeper in it, thereby the problem that causes the sleeper breaking-up to be lost efficacy.
The utility model content
The utility model first technical problem to be solved is that single vertical arrangement mode is all adopted in the arrangement of glass fiber in the polyurethane synthesis wooden sleeper of the prior art; Easily the stressed destruction that deforms and cause interlaminar shear owing to the lateral attitude that the shearing arrangement of reinforcement is not set during bending of sleeper; Make the sleeper global failure, and then provide a kind of and can not occur the composite sleeper that interlaminar shear destroys when crooked stressed.
For realizing above-mentioned purpose; The utility model provides a kind of sleeper; Said sleeper comprises inner core and extexine; Said inner core is that concrete, glass fiber reinforced unsaturated polyester resin composite material, wooden residue strengthen phenolic resin-base composite or composite rubber-plastic material, and the extexine of said composite sleeper be through the glass fabric after the polyurethane resin infiltration again after the coupling agent surfacing.
Wherein, between said inner core and said extexine, also be provided with sandwich of layers, said sandwich of layers be vertically lay through the woven glass roving fabric after said polyurethane resin soaks into again after the coupling agent surfacing.Said coupling agent is a silane coupler.
The line density of said woven glass roving fabric is 4800～9600g/km, and filament diameter is 10～40 μ m.
Offering a plurality of grooves that are used to strengthen adhesion between said glass fabric and the said inner core on the said inner core.
Said groove is along the length direction setting of said sleeper.
Said glass fabric be the glass fiber multiaxis to cloth, said glass fiber multiaxis is alkali-free glass fibre three axial cloth or four-axial cloth to cloth, the grammes per square metre of said alkali-free glass fibre three axial cloth or four-axial cloth is 600～1200g/m
2
Said polyurethane resin is made up of following raw materials by weight percent: polyalcohol 29.9～59.5%, isocyanates 40～70%, blowing agent 0.1～0.5%.
The expansion ratio of said polyurethane resin is 2.0～4.0, and the gel time under the room temperature condition is 1～10min.
The thickness of said extexine is 1～5mm, and the thickness of said sandwich of layers is 10～20mm.
Said polyurethane resin and said glass fiber multiaxis are 3: 7～1: 1 to the weight ratio of cloth.
The weight of said polyurethane resin and said glass fiber multiaxis are 3: 7～1: 1 to the ratio of the gross weight of cloth and woven glass roving fabric.
The described sleeper of the utility model comprises inner core and extexine, and said inner core is composite material or concrete, and the extexine of said sleeper is through the glass fabric after polyurethane resin soaks into again after the coupling agent surfacing.Select glass fabric to be because glass fabric has the fibre strength of a plurality of directions when weaving; Wherein, the fibre strength of most critical be along the lateral tie direction axially and the longitudinal axis that axially is the direction of miter angle and axially is 90 degree to and and lateral shaft to the fibre strength of the direction that is 135 degree; Preferred in this application said glass fabric is that the glass fiber multiaxis is to cloth; Also because multiaxis uses the intensity of specific direction fiber in the fabric to make to cloth during at fiber weaving simultaneously, its along the lateral tie direction axially and the longitudinal axis that axially is the direction of miter angle and axially is 90 degree to and and the fibre strength of lateral shaft on the direction that is 135 degree show more obviously; Utilize the intensity of above-mentioned a plurality of direction fibers just because of it, so it has all obtained performance more fully on the strength and stiffness of fiber; Like this after carrying out surfacing through coupling agent; Make this multiaxis to cloth after polyurethane resin sprays; Can be so that polyurethane resin can soak into to cloth this multiaxis better; Realize the good action of glass fiber multiaxis between cloth and polyurethane resin; Thereby also, make that sleeper obtains to advocate to decompose the shearing arrangement of reinforcement of direction in the stressed flexural deformation of sleeper through utilizing aforementioned glass fabric fibration power of (it is consistent that stressed flexural deformation advocates to decompose direction with sleeper) on specific direction.
Between said inner core and said extexine, can also vertically lay sandwich of layers, said sandwich of layers be through the woven glass roving fabric after the polyurethane resin infiltration again after the coupling agent surfacing; Woven glass roving fabric is an open structure, and after polyurethane resin portion's foaming within it, just forms a material layer with certain cushioning effect, thereby make the described sleeper of the utility model can absorb noise better.Likewise, said woven glass roving fabric also is in order to make polyurethane resin to soak into this roving better through coupling agent surface-treated purpose.
Use coupling agent that above-mentioned roving or glass fabric are carried out surfacing; Promptly conventional moistened surface is handled; It mainly is that surface action through this coupling agent makes woven glass roving fabric obtain less angle of wetting; Thereby it is wetting better to make that woven glass roving fabric can obtain, and improves the combination power at its interface.Wherein, preferred said coupling agent is a silane coupler, is because the coupling agent of this type can be that the woven glass roving fabric of silica obtains better adhesion with key component.
Wherein, The line density of selecting said woven glass roving fabric is 4800～9600g/km; Filament diameter is 10～40 μ m; Be to have considered that suitable line density and filament diameter can be convenient to carrying and field machining so that the described composite sleeper of the utility model on the basis that obtains desired performance, guarantees that it has suitable weight.
Selecting said glass fiber multiaxis is alkali-free glass fibre three axial cloth or four-axial cloth to cloth, because alkali-free glass fibre can be resisted the erosion of rainwater, thereby can improve the weatherability of the composite sleeper for preparing.The grammes per square metre of preferred said three axial cloth or four-axial cloth is 600～1200g/m
2, be that if its grammes per square metre is little, it is too little to influence its thickness as the composite sleeper sealer so because select the glass fiber multiaxis of suitable grammes per square metre just can obtain sleeper performance preferably to cloth, abrasion resistance too a little less than; Grammes per square metre is too big, and correspondingly the thickness as the composite sleeper sealer will be too big, makes polyurethane resin be difficult to fully to get into said glass fiber multiaxis and in cloth, it is soaked into.
Above-described sleeper vertically be the length direction of sleeper, horizontal (also the crying radially) of said sleeper is the width of sleeper.
The utlity model has following advantage:
(1) described sleeper employing composite material of the utility model or concrete are that extexine combines as inner core, with polyurethane resin reinforcing glass fabric; This sleeper is because the glass fiber multiaxis has been realized the shearing preparation in a plurality of directions of sleeper to being provided with of cloth; Thereby the destruction that interlaminar shear when the stressed bending of sleeper, also can not occur has very high safety and long application life.
(2) the described sleeper of the utility model can also further vertically be provided with between unsaturated polyester resin reinforcing glass fiber and the polyurethane resin reinforcing glass fabric through the woven glass roving fabric after said polyurethane resin soaks into again after the coupling agent surfacing; Thereby form a material layer, make the described composite sleeper of the utility model can absorb noise better with certain cushioning effect.
(3) the described sleeper of the utility model also offers a plurality of grooves on the core within it; Because polyurethane resin has certain foaminess; Glass fabric is after polyurethane resin soaks into, and polyurethane foam expands, thereby polyurethane resin is squeezed in these grooves in foaming process; Make the adhesion between glass fabric and the inner core improve greatly, improved the active force of inner core and extexine.
Description of drawings
Accompanying drawing 1 is the structural profile sketch map of the said sleeper of the utility model.
To be that the utility model is described further be provided with through the structural profile sketch map of the sleeper of the woven glass roving fabric sandwich of layers after said polyurethane resin soaks into again after the coupling agent surfacing accompanying drawing 2.
Accompanying drawing 3 is that the described inner core of the utility model is provided with the sleeper structural profile sketch map that sandwich of layers offers a plurality of grooves simultaneously.
Accompanying drawing 4 is sleeper structural profile sketch mapes that the described inner core of the utility model offers a plurality of grooves.
Each label is expressed as respectively in the accompanying drawing:
Inner core 1; Sandwich of layers 2; Extexine 3; Groove 4.
The specific embodiment
Below will combine accompanying drawing, and use following examples that the utility model is further set forth.
Embodiment 1
Fig. 1 is the described sleeper generalized section of the utility model; It is two-layer to see that in the figure said sleeper is divided into; Wherein, Inner most inner core 1 is that concrete, glass fiber reinforced unsaturated polyester resin composite material, wooden residue strengthen phenolic resin-base composite or composite rubber-plastic material, extexine 3 be through after the coupling agent surfacing again the glass fiber multiaxis after the polyurethane resin infiltration to cloth.
At first, selecting percentage by weight is that 30% trihydroxylic alcohol, percentage by weight are that 69.9% isocyanates, percentage by weight are 0.1% blowing agent, and it is for use that the above-mentioned raw materials mixed preparing is obtained polyurethane resin stoste.
Select the material of commercially available glass fiber reinforced unsaturated polyester resin composite material as inner core 1, it is the specification of 100～290mm that 2000～3200mm, the wide 100～230mm of being, height are grown in processing, then, is 600g/m with grammes per square metre
2Carry out the outside that surface-treated alkali-free glass fibre three axial cloth are wrapped in above-mentioned inner core 1 through silane coupler; And the above-mentioned polyurethane resin stoste for preparing is sprayed on the said alkali-free glass fibre three axial cloth; Thereby making polyurethane resin stoste soak into until forming monocoque to alkali-free glass fibre three axial cloth is extexine, and the thickness that calculates this extexine 3 is 1mm.In this process, the expansion ratio of polyurethane resin is 2.0, and to carry out the time that gel forms monocoque be 1min to said polyurethane resin under the room temperature.
Can obtain the described composite sleeper of being made up of inner core and extexine of the utility model, the weight ratio of polyurethane resin and alkali-free glass fibre three axial cloth is 3: 7 in this composite sleeper.
Selecting percentage by weight is that 59.5% trihydroxylic alcohol, percentage by weight are that 40.0% isocyanates, percentage by weight are 0.5% blowing agent, and it is for use that the above-mentioned raw materials mixed preparing is obtained polyurethane resin stoste.In addition, adopt lytic agent styrene that said unsaturated polyester resin is diluted, the lysate that obtains unsaturated polyester resin is for use.
Select wooden residue to strengthen the material of phenolic resin-base composite as inner core 1, it is the specification of 100～290mm that 2000～3200mm, the wide 100～230mm of being, height are grown in processing, then, is 900g/m with grammes per square metre
2Carry out the outside that surface-treated alkali-free glass fibre three axial cloth are wrapped in above-mentioned inner core 1 through silane coupler; And the above-mentioned polyurethane resin stoste for preparing is sprayed on the said alkali-free glass fibre three axial cloth; Thereby making polyurethane resin stoste soak into until forming monocoque to alkali-free glass fibre three axial cloth is extexine 3, and the thickness that calculates said extexine 3 is 3mm.In this process, the expansion ratio of polyurethane resin is 4.0, and to carry out the time that gel forms monocoque be 5min to said polyurethane resin under the room temperature.
Can obtain the described composite sleeper of being made up of inner core and extexine of the utility model, the weight ratio of polyurethane resin and alkali-free glass fibre three axial cloth is 1: 1 in this sleeper.
Certainly, through regulating the addition of above-mentioned polyurethane resin and alkali-free glass fibre three axial cloth, can also select the weight ratio of polyurethane resin and alkali-free glass fibre three axial cloth is 5: 7.
Fig. 2 is the described structural profile sketch map that the sleeper of sandwich of layers further is set of the utility model; Can see that in the figure said sleeper is divided into three layers; Wherein, Inner most inner core 1 is concrete, glass fiber reinforced unsaturated polyester resin composite material, wooden residue enhancing phenolic resin-base composite or composite rubber-plastic material; Extexine 3 is through the glass fiber multiaxis after polyurethane resin soaks into is to cloth again after the coupling agent surfacing, and above-mentioned sandwich of layers 2 between two-layer be the woven glass roving fabric after the polyurethane resin infiltration.
Selecting percentage by weight is that 29.9% trihydroxylic alcohol, percentage by weight are that 70.0% isocyanates, percentage by weight are 0.1% blowing agent, and it is for use that the above-mentioned raw materials mixed preparing is obtained polyurethane resin stoste.In addition, adopt lytic agent styrene that said unsaturated polyester resin is diluted, the lysate that obtains unsaturated polyester resin is for use.
Select the material of composite rubber-plastic material as inner core 1; It is the specification of 100～290mm that 2000～3200mm, the wide 100～230mm of being, height are grown in processing; Then; With line density be 4800g/km, filament diameter be 10 μ m carry out surface-treated woven glass roving fabric axially being layed in outside the said inner core 1 longitudinally through silane coupler, form said sandwich of layers 2.
Then, be 1200g/m with grammes per square metre
2Carry out surface-treated alkali-free glass fibre four-axial cloth through silane coupler and be wrapped in above-mentioned sandwich of layers 2 outsides; And the above-mentioned polyurethane resin stoste for preparing is sprayed on the said alkali-free glass fibre four-axial cloth; Thereby make polyurethane resin stoste soak into until forming monocoque alkali-free glass fibre four-axial cloth and woven glass roving fabric, the thickness that calculates said extexine 3 is 5mm.In this process, the expansion ratio of polyurethane resin is 3.0, and to carry out the time that gel forms monocoque be 10min to said polyurethane resin under the room temperature.
Can obtain that the utility model is described to have a sandwich of layers composite sleeper, the alkali-free glass fibre three axial cloth and the gross weight of woven glass roving fabric and the weight ratio of polyurethane resin are 1: 1 in this sleeper.
Embodiment 4
Selecting percentage by weight is that 30.7% trihydroxylic alcohol, percentage by weight are that 69.0% isocyanates, percentage by weight are 0.3% blowing agent, and it is for use that the above-mentioned raw materials mixed preparing is obtained polyurethane resin stoste.In addition, adopt lytic agent styrene that said unsaturated polyester resin is diluted, the lysate that obtains unsaturated polyester resin is for use.
Select the material of concrete as inner core 1; It is the specification of 100～290mm that 2000～3200mm, the wide 100～230mm of being, height are grown in processing; Then; With line density be 9600g/km, filament diameter be 40 μ m carry out surface-treated woven glass roving fabric axially being layed in outside the said inner core 1 longitudinally through silane coupler, form said sandwich of layers 2.
Then, be 1200g/m with grammes per square metre
2Carry out surface-treated alkali-free glass fibre four-axial cloth through silane coupler and be wrapped in above-mentioned sandwich of layers 2 outsides; And the above-mentioned polyurethane resin stoste for preparing is sprayed on the said alkali-free glass fibre four-axial cloth; Thereby make polyurethane resin stoste soak into until forming monocoque alkali-free glass fibre four-axial cloth and woven glass roving fabric, the thickness that calculates said extexine 3 is 5mm.In this process, the expansion ratio of polyurethane resin is 3.0, and to carry out the time that gel forms monocoque be 10min to said polyurethane resin under the room temperature.
Can obtain the described sleeper with sandwich of layers of the utility model, the alkali-free glass fibre three axial cloth and the gross weight of woven glass roving fabric and the weight ratio of polyurethane resin are 7: 3 in this sleeper.
Embodiment 5
Fig. 3 is the described structural representation that the sleeper of sandwich of layers and groove further is set of the utility model; Can see that in the figure said sleeper is divided into three layers; Wherein, Inner most inner core 1 is concrete, glass fiber reinforced unsaturated polyester resin composite material, wooden residue enhancing phenolic resin-base composite or composite rubber-plastic material; Extexine 3 is through the glass fiber multiaxis after polyurethane resin soaks into is to cloth again after the coupling agent surfacing, and above-mentioned sandwich of layers 2 between two-layer be the woven glass roving fabric after the polyurethane resin infiltration.Offer groove 4 on described inner core 1 surface and be used for the adhesion between reinforcing glass fabric and the inner core.Glass fabric has certain elasticity after polyurethane resin soaks into, improve greatly through the groove 4 of core surface and the adhesion of inner core 1.
Selecting percentage by weight is that 30.7% trihydroxylic alcohol, percentage by weight are that 69.0% isocyanates, percentage by weight are 0.3% blowing agent, and it is for use that the above-mentioned raw materials mixed preparing is obtained polyurethane resin stoste.In addition, adopt lytic agent styrene that said unsaturated polyester resin is diluted, the lysate that obtains unsaturated polyester resin is for use.
Select the material of concrete as inner core 1; It is the specification of 100～290mm that 2000～3200mm, the wide 100～230mm of being, height are grown in processing; Then; With line density be 9600g/km, filament diameter be 40 μ m carry out surface-treated woven glass roving fabric axially being layed in outside the said inner core 1 longitudinally through silane coupler, form said sandwich of layers 2.Offer groove 4 in described core surface, said groove 4 is along the length direction setting of said sleeper, and the embodiment as can conversion also can be used for the adhesion between reinforcing glass fabric and the inner core along the width setting of said sleeper.Glass fabric has certain elasticity after polyurethane resin soaks into, improve greatly through the groove of core surface and the adhesion of inner core.
Then, be 1200g/m with grammes per square metre
2Carry out surface-treated alkali-free glass fibre four-axial cloth through silane coupler and be wrapped in above-mentioned sandwich of layers 2 outsides; And the above-mentioned polyurethane resin stoste for preparing is sprayed on the said alkali-free glass fibre four-axial cloth; Thereby make polyurethane resin stoste soak into until forming monocoque alkali-free glass fibre four-axial cloth and woven glass roving fabric, the thickness that calculates said extexine 3 is 5mm.In this process, the expansion ratio of polyurethane resin is 3.0, and to carry out the time that gel forms monocoque be 10min to said polyurethane resin under the room temperature.
Can obtain the described sleeper with sandwich of layers and groove of the utility model, the alkali-free glass fibre three axial cloth and the gross weight of woven glass roving fabric and the weight ratio of polyurethane resin are 7: 3 in this sleeper.
Embodiment 6
Fig. 4 is the sleeper structural representation that the described inner core of the utility model offers a plurality of grooves.It is two-layer to see that in the figure said sleeper is divided into; Wherein, Inner most inner core 1 is that concrete, glass fiber reinforced unsaturated polyester resin composite material, wooden residue strengthen phenolic resin-base composite or composite rubber-plastic material, extexine 3 be through after the coupling agent surfacing again the glass fiber multiaxis after the polyurethane resin infiltration to cloth.Offer groove 4 on described inner core 1 surface and be used for the adhesion between reinforcing glass fabric and the inner core.Glass fabric has certain elasticity after polyurethane resin soaks into, improve greatly through the groove 4 of core surface and the adhesion of inner core 1.
At first, selecting percentage by weight is that 30% trihydroxylic alcohol, percentage by weight are that 69.9% isocyanates, percentage by weight are 0.1% blowing agent, and it is for use that the above-mentioned raw materials mixed preparing is obtained polyurethane resin stoste.
Select the material of commercially available glass fiber reinforced unsaturated polyester resin composite material as inner core 1, it is the specification of 100～290mm that 2000～3200mm, the wide 100～230mm of being, height are grown in processing, then, is 600g/m with grammes per square metre
2Carry out the outside that surface-treated alkali-free glass fibre three axial cloth are wrapped in above-mentioned inner core 1 through silane coupler; And the above-mentioned polyurethane resin stoste for preparing is sprayed on the said alkali-free glass fibre three axial cloth; Thereby making polyurethane resin stoste soak into until forming monocoque to alkali-free glass fibre three axial cloth is extexine, and the thickness that calculates this extexine 3 is 1mm.In this process, the expansion ratio of polyurethane resin is 2.0, and to carry out the time that gel forms monocoque be 1min to said polyurethane resin under the room temperature.
Can obtain that the utility model is described to be provided with the sleeper of a plurality of grooves by inner core, the weight ratio of polyurethane resin and alkali-free glass fibre three axial cloth is 3: 7 in this sleeper.
As embodiment that can conversion; The described sleeper of the utility model can be regulated ratio and the weight ratio of polyurethane resin and alkali-free glass fibre three axial cloth of gross weight of weight and the alkali-free glass fibre three axial cloth and the woven glass roving fabric of above-mentioned polyurethane resin through regulating the alkali-free glass fibre multiaxis to the amount of cloth, woven glass roving fabric and polyurethane resin; Be preferably 3: 7～1: the 1 interior arbitrary numerical value of scope, thereby satisfying the Different products demand.
The glass fiber multiaxis that said glass fabric provides in the foregoing description can also be selected fiberglass gridding cloth, glass fiber dewaxing cloth, continuous felt to cloth.
In addition, as embodiment that can conversion, the sleeper described in the foregoing description 1-4 also can be offered a plurality of grooves on said inner core 1, thereby strengthens the adhesion of said inner core 1 and said extexine 3.
In addition, the specification of sleeper can be adjusted according to the production and construction demand in the foregoing description.
Though the utility model has carried out detailed elaboration through the specific embodiment to it; But; Those skilled in the art should be understood that; Any form of being made on this basis that does not exceed the claim protection domain and the variation of details all belong to the claimed scope of the utility model.
Claims (11)
1. sleeper; It is characterized in that; Said sleeper comprises inner core and extexine; Said inner core is that concrete, glass fiber reinforced unsaturated polyester resin composite material, wooden residue strengthen phenolic resin-base composite or composite rubber-plastic material, and the extexine of said sleeper be through the glass fabric after the polyurethane resin infiltration again after the coupling agent surfacing.
2. sleeper according to claim 1; It is characterized in that; Between said inner core and said extexine, also be provided with sandwich of layers, said sandwich of layers be vertically lay through the woven glass roving fabric after said polyurethane resin soaks into again after the coupling agent surfacing.
3. sleeper according to claim 1 and 2 is characterized in that, is offering a plurality of grooves that are used to strengthen adhesion between said glass fabric and the said inner core on the said inner core.
4. sleeper according to claim 3 is characterized in that, said groove is along the length direction setting of said sleeper.
5. according to claim 1 or 2 or 4 described sleepers; It is characterized in that; Said glass fabric is that the glass fiber multiaxis is to cloth; Said glass fiber multiaxis is alkali-free glass fibre three axial cloth or four-axial cloth to cloth, and the grammes per square metre of said alkali-free glass fibre three axial cloth or four-axial cloth is 600 ~ 1200g/m
2
6. sleeper according to claim 1 and 2 is characterized in that, said coupling agent is a silane coupler.
7. sleeper according to claim 2 is characterized in that, the line density of said woven glass roving fabric is 4800 ~ 9600g/km, and filament diameter is 10 ~ 40 μ m.
8. sleeper according to claim 1 is characterized in that, the thickness of said extexine is 1 ~ 5mm.
9. sleeper according to claim 2 is characterized in that, the thickness of said sandwich of layers is 10 ~ 20mm.
10. sleeper according to claim 1 is characterized in that, the weight ratio of said polyurethane resin and said glass fabric is 3:7 ~ 1:1.
11. sleeper according to claim 2 is characterized in that, the weight of said polyurethane resin and said glass fiber multiaxis are 3:7 ~ 1:1 to the ratio of the gross weight of cloth and woven glass roving fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200285661U CN202482711U (en) | 2012-01-20 | 2012-01-20 | Sleeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200285661U CN202482711U (en) | 2012-01-20 | 2012-01-20 | Sleeper |
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|---|---|
| CN202482711U true CN202482711U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200285661U Expired - Lifetime CN202482711U (en) | 2012-01-20 | 2012-01-20 | Sleeper |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866653A (en) * | 2014-02-28 | 2014-06-18 | 滕州市华海新型保温材料有限公司 | Novel sandwich structure composite sleeper and continuous pultrusion molding process thereof |
| CN103952949A (en) * | 2014-05-21 | 2014-07-30 | 张锡祥 | FRP framework type rail sleeper structure |
| CN108568980A (en) * | 2017-12-08 | 2018-09-25 | 洛阳兴隆新材料科技有限公司 | A kind of fibre reinforced composites composite sleeper and its forming method |
| CN111088727A (en) * | 2019-12-06 | 2020-05-01 | 武汉纺织大学 | High-weather-resistance and high-strength composite structure sleeper and preparation method thereof |
-
2012
- 2012-01-20 CN CN2012200285661U patent/CN202482711U/en not_active Expired - Lifetime
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| CN103866653A (en) * | 2014-02-28 | 2014-06-18 | 滕州市华海新型保温材料有限公司 | Novel sandwich structure composite sleeper and continuous pultrusion molding process thereof |
| CN103866653B (en) * | 2014-02-28 | 2016-01-20 | 滕州市华海新型保温材料有限公司 | A kind of novel sandwich structure synthesis wooden sleeper and continuously pultrusion molding process |
| CN103952949A (en) * | 2014-05-21 | 2014-07-30 | 张锡祥 | FRP framework type rail sleeper structure |
| CN103952949B (en) * | 2014-05-21 | 2015-09-23 | 张锡祥 | FRP frame type concrete sleeper |
| CN108568980A (en) * | 2017-12-08 | 2018-09-25 | 洛阳兴隆新材料科技有限公司 | A kind of fibre reinforced composites composite sleeper and its forming method |
| CN111088727A (en) * | 2019-12-06 | 2020-05-01 | 武汉纺织大学 | High-weather-resistance and high-strength composite structure sleeper and preparation method thereof |
| CN111088727B (en) * | 2019-12-06 | 2021-10-01 | 武汉纺织大学 | High-weather-resistance and high-strength composite structure sleeper and preparation method thereof |
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