CN110497666A - A kind of high intensity buffer shock-absorbing device and preparation method thereof - Google Patents

A kind of high intensity buffer shock-absorbing device and preparation method thereof Download PDF

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Publication number
CN110497666A
CN110497666A CN201910789097.1A CN201910789097A CN110497666A CN 110497666 A CN110497666 A CN 110497666A CN 201910789097 A CN201910789097 A CN 201910789097A CN 110497666 A CN110497666 A CN 110497666A
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CN
China
Prior art keywords
layer
buffer shock
elastic protective
protective layer
absorbing device
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910789097.1A
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Chinese (zh)
Inventor
石雅琳
苏丽丽
徐庆辉
张永
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Liming Research Institute of Chemical Industry Co Ltd
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Liming Research Institute of Chemical Industry Co Ltd
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Publication date
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Priority to CN201910789097.1A priority Critical patent/CN110497666A/en
Publication of CN110497666A publication Critical patent/CN110497666A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E01B19/003—Means for reducing the development or propagation of noise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Railway Tracks (AREA)

Abstract

The invention discloses a kind of high-intensitive buffer shock-absorbing devices and preparation method thereof, are made of three kinds of elastic protective layer, toughening layer and vibration reduction and cushioning layer structural material；The elastic protective layer is in backing plate lowest level, is non-foamed polyure-thane elastomeric material, elastic protective layer's material property are as follows: 90 ± 5A of hardness, intensity >=35Mpa, elongation >=300%；The toughening layer is set between elastic protective layer and vibration reduction and cushioning layer；Buffer shock-absorbing layer is in backing plate top layer, and material is identical as elastic protective layer.The buffer shock-absorbing device is composite material, and intensity is high, the service life is long, anti-puncture effect is good, reduces the rigid collision of sleeper and stone, and then reduce tiny fragments of stone, coal, etc. mountain flour.

Description

A kind of high intensity buffer shock-absorbing device and preparation method thereof
Technical field
The invention belongs to buffer shock-absorbing field of engineering technology, relate generally to a kind of vibration attenuation pad device of polyurethane material class Part.
Background technique
With the continuous development of industrial technology, field of track traffic is in the rapid development stage, and backing plate is track structure In one of important component, backing plate reduce orbit rigidity, improve route elasticity, improve wheel track in terms of play not Alternative effect.
For existing Ballast track, although having the low advantage of construction cost, need to pass through Bed plate for sleeper simultaneously Often replacement and railway roadbed make cleaning etc. firm by ramming, cause maintenance heavy workload, it is at high cost the disadvantages of, especially in the track switch of railway Area, backing plate damping layer and the frictional force of tiny fragments of stone, coal, etc. stone are bigger, and Rail inspection destroys and tiny fragments of stone, coal, etc. mountain flourization is also even more serious.Sleeper and road It is the main reason for causing tiny fragments of stone, coal, etc. mountain flour that the rigidity of bed tiny fragments of stone, coal, etc. stone, which is touched,.By installing elastic damping layer additional under sleeper, can effectively reduce The rigid collision of sleeper and stone, and then reduce tiny fragments of stone, coal, etc. mountain flour.Used at present is rubber mat plate, but the tolerance of rubber material Property and intensity it is relatively poor, it is easy to pierced through by tiny fragments of stone, coal, etc. stone, at the same the factors such as heat, oxygen, ultraviolet light and rainwater effect under, rubber pad The service life of plate can also greatly shorten.Therefore it is badly in need of novel high-performance cushion plate, improves existing Bed plate for sleeper and subtract vibration isolating effect. Dusting when reducing train passage to railway roadbed tiny fragments of stone, coal, etc. stone, prolongs the service life, substitutes current rubber mat plate, be asking for urgent need to resolve Topic.
Summary of the invention
The invention solves first technical problem be to provide a kind of high-intensitive buffer shock-absorbing device.The buffer shock-absorbing Device is composite material, and intensity is high, the service life is long, anti-puncture effect is good, reduces the rigid collision of sleeper and stone, and then reduce the tiny fragments of stone, coal, etc. Mountain flour.
The invention solves second technical problem be to provide the preparation side of high intensity buffer shock-absorbing device a kind of Method.
To solve first technical problem, the technical solution adopted by the present invention is that: a kind of high intensity buffer shock-absorbing device, by Three kinds of elastic protective layer, toughening layer and vibration reduction and cushioning layer structural material composition；The elastic protective layer is in backing plate lowest level, is Non-foamed polyure-thane elastomeric material, elastic protective layer's material property are as follows: 90 ± 5A of hardness, intensity >=35MPa, elongation >= 300%；The toughening layer is set between elastic protective layer and vibration reduction and cushioning layer, as high-strength fiber glass felt, glass-fiber-fabric, nylon cloth, Non-woven fabrics, geotextiles, curtain cloth material etc., it is preferred that toughening layer material used in Bed plate for sleeper passes through surface modification treatment；It is slow The top layer that damping layer is in backing plate is rushed, material is identical as elastic protective layer.
Buffer shock-absorbing device thickness is adjusted according to the requirement of product, is used as track pad, general elastic protective layer Thickness≤3mm, toughening layer≤3mm.
To solve second technical problem, the present invention provides a kind of preparation method of high intensity buffer shock-absorbing device, packet It includes following steps: (1) by the temperature and mixing ratio of cast polyurethane material requirement, the mold of predetermined temperature is poured into after mixing de-bubble In, it is put into toughening layer in material process of setting, and carry out pressing mold processing, makes not solidify material and toughening layer material with good Caking property；(2) when can demould, pressuring template is taken out, is poured vibration reduction and cushioning layer material, buffer shock-absorbing layer by operating procedure (1) Thickness can be adjusted according to the requirement thickness of backing plate product；(3) solidify when material to when can demould, demoulding, be put into baking oven into Row post curing；(4) post curing is completed, and carries out moditied processing to get high-intensitive buffer shock-absorbing device finished product.
Compared with rubber material, the beneficial effects of the present invention are: high strength vibration damping device of the present invention, by resilient protection Layer, toughening layer and vibration reduction and cushioning layer three kinds of structural materials composition, the elastic protective layer be high rigidity, high intensity, high resiliency and The non-foamed polyure-thane elastomeric material of high abrasion, it is possible to provide preferably anti-puncture and wear-resisting property etc. extend the service life of backing plate； The toughening layer can be well embedded between elastic protective layer and vibration reduction and cushioning layer, can further improve backing plate toughness and anti-puncture Performance；Buffer shock-absorbing layer is in the top layer of backing plate, identical as resilient protection layer material, high rigidity, high intensity and the height of material Elasticity can provide preferably anti-puncture, wear-resisting and buffer shock-absorbing performance, be conducive to using effect.
Preparation method of the present invention, elastic protective layer, vibration reduction and cushioning layer preceding are bonded uncured with toughening layer Effect, combines together with it, and bonding is secured.
Specific embodiment
Below with reference to embodiment, invention is further described in detail.
Embodiment 1
(1) the cast polyurethane material of the T2093 trade mark produced using Liming Research Institute of Chemical Industry Co., Ltd., It keeps 80 DEG C of cast polyurethane material A component (performed polymer), 120 DEG C of B component (chain extender), in A/B ratio 100/14.7, mixing It uniformly and after deaeration pours into 100 DEG C of molds, according to material density, controls casting material quality, make it with a thickness of 2mm, in object Expect to be put into the geotextiles for cutting size in process of setting, and carry out pressing mold processing, make not solidify complete between material and geotextiles Full bonding；
(2) when can demould, pressuring template is taken out, commercially available polyurethane material adhesive Kaimoluoke is coated in geotextiles 218, it then is poured vibration reduction and cushioning layer material by operating procedure same in (1), material is identical with elastic protective layer, the high resistant of casting Buddhist nun's polyurethane materials thickness 7mm；
(3) it solidifies when material to when can demould, demoulding is put into 100 DEG C of baking ovens and carries out post curing 16 hours；
(4) after the completion of post curing, moditied processing is carried out to get composite buffering vibration attenuation pad device finished product, overall thickness 11mm.
Wherein in buffer shock-absorbing device, the buffer shock-absorbing strata urethane material property of elastic protective layer's sum are as follows: hardness Shao A93, tensile strength 43MPa, elongation 380%, rebound 40%.The backing plate exemplar carries out 300 with reference to TJ/GW103-2013 standard After ten thousand fatigues, do not occur by the puncture of tiny fragments of stone, coal, etc. stone, backing plate tearing phenomenon.
Embodiment 2
(1) the cast polyurethane material of the M4087 trade mark produced using Liming Research Institute of Chemical Industry Co., Ltd., It keeps 50 DEG C of cast polyurethane material A component (performed polymer), 40 DEG C of B component (polyalcohol), 45 DEG C of component C (chain extender), by A/ B/C ratio 100/80/13.3 is uniformly mixed and pours into 80~100 DEG C of molds after deaeration, according to material density, control casting Quality of material makes it with a thickness of 2.5mm, in material process of setting, is put into the nylon cloth for cutting size, and carry out at pressing mold Reason, makes not solidify and bonds completely between material and geotextiles；
(2) when can demould, pressuring template is taken out, commercially available polyurethane material adhesive Kaimoluoke is sprayed in geotextiles 218, it then is poured vibration reduction and cushioning layer material by operating procedure same in (1), material is identical with elastic protective layer, the high resistant of casting Buddhist nun's polyurethane materials thickness 6mm；
(3) it solidifies when material to when can demould, demoulding is put into 100 DEG C of baking ovens and carries out post curing 20 hours；
(4) after the completion of post curing, moditied processing is carried out to get composite buffering vibration attenuation pad device finished product overall thickness 11mm.
Wherein the polyurethane material performance of being hit by a bullet property of buffer shock-absorbing device protective layer and buffer shock-absorbing layer is hardness Shao A87, Tensile strength 40MPa, elongation 520%, rebound 45%.The backing plate exemplar carries out 3,000,000 with reference to TJ/GW 103-2013 standard After secondary fatigue, do not occur by the puncture of tiny fragments of stone, coal, etc. stone, backing plate tearing phenomenon.
Comparative example
Rubber mat plate with embodiment same thickness after reference TJ/GW 103-2013 standard carries out 3,000,000 fatigues, Occur significantly to tear phenomenon by the puncture of tiny fragments of stone, coal, etc. stone, material.

Claims (7)

1. a kind of high intensity buffer shock-absorbing device, is made of three kinds of elastic protective layer, toughening layer and vibration reduction and cushioning layer structural material； The elastic protective layer is in backing plate lowest level, is non-foamed polyure-thane elastomeric material, elastic protective layer's material property are as follows: hard Spend 90 ± 5A, intensity >=35Mpa, elongation >=300%；The toughening layer be set to elastic protective layer and vibration reduction and cushioning layer it Between；Buffer shock-absorbing layer is in backing plate top layer, and material is identical as elastic protective layer.
2. high damping buffer shock-absorbing device according to claim 1, it is characterized in that the toughening layer be high-strength fiber glass felt, Glass-fiber-fabric, nylon cloth, non-woven fabrics, geotextiles or curtain cloth material.
3. high damping buffer shock-absorbing device according to claim 1, it is characterized in that toughening layer material is modified by surface Processing.
4. high damping buffer shock-absorbing device according to claim 1, it is characterized in that elastic protective layer's thickness≤3mm, increases Tough layer≤3mm.
5. a kind of method for preparing high damping buffer shock-absorbing device described in one of Claims 1 to 4, comprising the following steps: (1) temperature and mixing ratio for pressing cast polyurethane material requirement, pour into the mold of predetermined temperature after mixing de-bubble, solidifying in material Gu being put into toughening layer in the process, and pressing mold processing is carried out, makes not solidify material and toughening layer material with good caking property； (2) when can demould, pressuring template is taken out, is poured vibration reduction and cushioning layer material by operating procedure (1), buffer shock-absorbing thickness degree is according to pad The requirement thickness of panel products can be adjusted；(3) it solidifies when material to when can demould, demoulding is put into baking oven and carries out post curing； (4) post curing is completed, and carries out moditied processing to get high-intensitive buffer shock-absorbing device finished product.
6. according to the method described in claim 5, the cast polyurethane material refers to the limited duty of dawn chemical research designing institute The trade mark of Ren company production is T2093, M4087 product.
7. according to the method described in claim 5, it is characterized in that spraying the commercially available triumphant nurse of polyurethane material adhesive on toughening layer Lip river gram 218.
CN201910789097.1A 2019-08-12 2019-08-12 A kind of high intensity buffer shock-absorbing device and preparation method thereof Pending CN110497666A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112239970A (en) * 2020-08-25 2021-01-19 中铁工程设计咨询集团有限公司 Double-layer elastic backing plate and rail fastener

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2892940Y (en) * 2005-11-28 2007-04-25 朱德功 Elastic pads under rail sleepers
CN101210406A (en) * 2006-12-26 2008-07-02 徐顺松 Road plate type railroad vibration-damping cushion
CN103541281A (en) * 2013-11-07 2014-01-29 赵炜 Railroad sleeper with multiplayer structure
CN105332324A (en) * 2015-11-25 2016-02-17 中格复合材料（南通）有限公司 Composite sleeper
CN105401492A (en) * 2015-12-22 2016-03-16 成都市新筑路桥机械股份有限公司 Waterproof vibration-damping composite structure applied to embedded track system and construction method of waterproof vibration-damping composite structure
CN108660867A (en) * 2018-07-26 2018-10-16 铁科腾跃科技有限公司 A kind of compound type polyurethane sleeper pad and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2892940Y (en) * 2005-11-28 2007-04-25 朱德功 Elastic pads under rail sleepers
CN101210406A (en) * 2006-12-26 2008-07-02 徐顺松 Road plate type railroad vibration-damping cushion
CN103541281A (en) * 2013-11-07 2014-01-29 赵炜 Railroad sleeper with multiplayer structure
CN105332324A (en) * 2015-11-25 2016-02-17 中格复合材料（南通）有限公司 Composite sleeper
CN105401492A (en) * 2015-12-22 2016-03-16 成都市新筑路桥机械股份有限公司 Waterproof vibration-damping composite structure applied to embedded track system and construction method of waterproof vibration-damping composite structure
CN108660867A (en) * 2018-07-26 2018-10-16 铁科腾跃科技有限公司 A kind of compound type polyurethane sleeper pad and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112239970A (en) * 2020-08-25 2021-01-19 中铁工程设计咨询集团有限公司 Double-layer elastic backing plate and rail fastener

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Application publication date: 20191126