CN102153872B - Seal wax composition for train end connector of motor train unit and preparation method thereof - Google Patents
Seal wax composition for train end connector of motor train unit and preparation method thereof Download PDFInfo
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- CN102153872B CN102153872B CN 201110024279 CN201110024279A CN102153872B CN 102153872 B CN102153872 B CN 102153872B CN 201110024279 CN201110024279 CN 201110024279 CN 201110024279 A CN201110024279 A CN 201110024279A CN 102153872 B CN102153872 B CN 102153872B
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Abstract
The invention discloses a seal wax composition for a train end connector of a motor train unit. The seal wax composition comprises the following components in percentage by weight: 62-70% of wax material, 1-10% of tackifier, 15-25% of fire retardant, 5-15% of hydroxyl-terminated polydiorgaonsiloxane polymer, 1-5% of siloxane cross-linking agent and 0.1-3% of catalyst. The invention also discloses a preparation method of the seal wax composition. The seal wax composition prepared by the method contains no solvent and has good initial adhesion and favorable sealing, waterproofing, insulating and antiflaming properties; and the seal wax composition does not flow at the high temperature of 100 DEG C and does not crack at the low temperature of -35 DEG C, is in a paste state at room temperature and can be filled in a hose with a sharp mouth to be extruded, thereby facilitating construction. More importantly, the surface of the wax coating is not tacky and can become properly tackier along with elapse of time; the surface of the wax coating is in a plastic or rubber state, but the inside of the wax is still in a semi-solid state; and the original signal line can be replaced with a new one by simply removing the wax around the signal line and then refilling the seal wax.
Description
Technical field
The present invention relates to a kind of sealing wax composition, especially a kind of sealing wax composition and method of making the same for EMUs car terminal adapter.
Background technology
Chinese Railway the sixth time speed-raising, on-line running all be EMUs (Harmony), original name CRH series, CRH is China Railway High-speed(China Railway High-speed) abbreviation, respectively from state's import of advanced technology such as Japanese, German, French, digest and assimilate and domesticize, become the EMUs product line of " having China's independent intellectual property right ", technology belongs to the leading level in the world at present.The domestic CRH3 motor train unit train that has at present 80 multiple rows moves, the high ferro project of now building, and the Train experiment speed per hour has been created world record, reaches 487 kilometers/hour.Tens signal wires between the EMUs two joint compartments all are to connect (on the car terminal adapter module by car terminal adapter module, the every independent slot of signal wire, the metal joint of signal wire only need insert slot can finish connection), discovery in service, because the temperature difference between car internal-external temperature difference and the operation area, cause water of condensation occurring on the signal wire jacket surface, in the train accelerator, water of condensation can flow in the slot of connector modules along the signal wire jacket surface, cause ponding, the metal joint that signal wire in the slot is exposed like this is just under water, the signal transmission abnormality probably occurs.In order to stop any potential safety hazard that may occur, so be badly in need of suitable material signal wire joint and connector modules adhering and sealing are lived, reach the waterproof purpose; But because will often change the compartment or change signal wire, so sealing material can't be installed in connector modules in advance, can not be adhesively fixed signal wire and connector modules fully again; In addition, signal wire slot diameter only has 5mm, and spacing only has 2mm between the slot, needs the sealing material good fluidity, can finish the sealing of slight gap.Therefore selecting which kind of material is comparatively crucial problem as sealing substrate.
Summary is as using the sealing material on EMUs car terminal adapter must satisfy simultaneously following requirement:
1, sealing is bonding: metal, pottery, three kinds of materials of cable are had good bonding; In coating the junctor installation process of sealing material, or the vibrations in the train operation can not produce, and trim breaks away from or cracking.
2, waterproof: material is without wetting ability;
3, insulation: do not affect electrical signal;
4, fire-retardant: as to satisfy the fire-retardant requirement of train material;
5, heatproof: the temperature Product Status that can satisfy-35-100 ℃ is constant;
6, sagging will surpass 5mm, because maximum sealing-gap is 5mm, can fill by facade;
7, corrodibility: without copper corrosion;
8, can not heat: the signal wire temperature should not surpass 80 ℃, and namely sealing material can not heat fused or exothermic heat of reaction;
Convenient when 9, using, can satisfy the sealing of slight gap; Structural strength is moderate after using, and when train accelerates at a high speed, can not make because of inertia the sealing wax displacement; But intensity can not be too high, so that can not change signal wire.
In the middle of existing sealing material, the patented product introduction of many types is arranged, but does not have a energy to satisfy above whole requirement:
The first kind: need to install in advance, as changing, then will destroy original sealing material midway.Such as patent " ZL200410005103.3 halogen-less low density fireproof putty ", be applicable to build hole, the fire proof seal of the cable tray of warship, steamer, aircraft; Patent " (application number) 94111223.3 electrically insulated sealing rubber washers " is applicable to the insulated enclosure of low tension wire busbar and all kinds of electric exposed joints; Patent " (application number) 200910144745.4 1 kinds of non-toxic and fireproof rubber sealing strip for doors and windows of vehicles running on rails and preparation method thereof " is applicable to the sealing of doors and windows of vehicles; Patent " (application number) 200680014622.3 sealing materials and using method thereof ", this class sealing material adhering and sealing is good, but usually can only disposablely use in advance, and follow-up replacing then will all seal again.
Equations of The Second Kind: non-structure intensity or structural strength are inadequate during use.Such as patent (90102223.3) " normal temperature is filled thixotropic cable filler and preparation ", waterproof, sealing, insulation, it is also convenient to use, but can not solidify non-structure intensity, when train accelerates, under inertia effect, the body of paste sealing intensity is inadequate, can break away from sealing station, lose waterproof action, be not suitable as the sealing material of EMUs car terminal adapter.
The 3rd class: structural strength is too large, bonding force is too strong.Such as tackiness agent, can pollute other material of contact during use, and signal wire is fixed in the connector modules after solidifying, and can't change, if hot melt adhesive also needs to use after the heat fused, can damage signal wire.
The 4th class: bonding force is not enough, and easy delamination loses sealing function in the vibrations.In recent years, silicone rubber kinds sealing agent development is very fast, and purposes relates to all trades and professions, the rubber composition of many room-temperature-curables known in the art particularly, its can room temperature under by contacting curing with the moisture content of air.The rubber composition of so-called dealcoholizing-type room-temperature-curable obtains widespread use (referring to such as patent 200680026901.1 " organosiloxane compositions " in from the sealing compositions of electronics and electrical means to the scope of tackiness agent and structural sealant, patent 200910129196.3 " film forming organic polysiloxane emulsion composition ", patent ZL02810846.9 " rubber composition of room-temperature-curable ", patent ZL200610052090.4 " flame-proof silicone sealant for electronics and manufacture method thereof " etc.).But the composition of these types and the poor adhesion of matrix, particularly with vinyon class material poor adhesion, bonding persistence is low, constantly will lose stopping property in the vibrations process.
The present invention considers above factor, and having developed and having adopted wax class material is the sealing wax composition of material of main part, in particular for a kind of sealing wax composition of EMUs car terminal adapter.
Wax has advantages of that moisture sealed is good, antioxidant anticorrosive is good, stable chemical nature, relative low price, that use technique is simple, environmental friendliness is nontoxic etc. is very outstanding, the over-all properties of great satisfaction that has other material to possess can be selected the exploitation EMUs car terminal adapter sealing wax take wax as base mateiral.
Also there are some to play the Wax composition of exclusion seal in the prior art, for example Chinese patent (ZL97116401.0) " a kind of protective wax composite for automobile inner cavity and preparation method thereof " is by wax, resin, cere improving agent, rust-preventive agent, thixotropic agent, solvent composition, the tool thixotropy, the pliable and tough densification of the cere of moulding, not easy to crack, but this wax contains solvent, flow during construction, can't carry out facade fills, and very thin cere has the trickling situation after solidifying in the time of 80 ℃, therefore is not suitable as EMUs car terminal adapter sealing wax; Chinese patent (ZL200410042842.X) " a kind of pill wax composition for sealing " and patent (ZL01131367.6) " the anti-cracking pill wax composition for sealing that does not contain beeswax " can prepare waterproof article, also can be used for electric insulation wax, but heat filling, the one, the unsuitable high temperature of signal wire, the 2nd, be liquid after the heating, can't carry out face seal and facade and fill, also without mentioning fire-retardant situation.Therefore all be not suitable as the sealing wax of EMUs car terminal adapter.
Summary of the invention
The purpose of this invention is to provide a kind of sealing wax composition and method of making the same that can be used in EMUs car terminal adapter.
In order to realize purpose of the present invention, the technical scheme of employing is:
A kind of sealing wax composition for EMUs car terminal adapter comprises following component according to weight percent:
(a) 62～70% wax class materials
(b) 1～10% tackifier
(c) 15～25% fire retardants
(d) 5～15% terminal hydroxy group polydiorganosiloxane polymkeric substance
(e) 1～5% silane crosslinker
(f) 0.1～3% catalyzer.
Described wax class material is selected from Microcrystalline Wax, polyethylene wax, oxidized polyethlene wax, oxidized microcrystalline wax, Vaseline or these wax class material arbitrary proportion mixtures, a kind of in preferably polyethylene wax, oxidized polyethlene wax, the oxidized microcrystalline wax or their mixture, wherein polyethylene wax is the paste wax of molecular weight ranges 800～3000.
Described tackifier are selected from the mixture of Atactic Polypropelene, polybutene, polyisobutene or these tackifier arbitrary proportions, and its molecular weight ranges is 3000～40000, and preferred molecular weight range is 3000～10000.
Described fire retardant is selected from the mixture of aluminium hydroxide, magnesium hydroxide or their arbitrary proportions.
R
N=50～2000, R is any monovalent organic radical, hydroxyl or the hydrogen of 1 to 20 carbon atom;
Described silane coupling agent is selected from vinyltrimethoxy silane, vinyltriethoxysilane, N-(beta-aminoethyl)-one or more mixtures in the γ aminopropyltriethoxy silane, gamma-amino propyl trimethoxy silicane, γ aminopropyltriethoxy silane, the preferred vinyl Trimethoxy silane.
Described catalyzer is selected from the inner complex of organic carboxyl acid tin and organotin inner complex, titanic acid ester and titanium or the mixture of above arbitrary proportion, preferred titanic acid ester.
Concrete preparation method is: at first with 140 ℃ of stirrings of control temperature in described wax class material, being heated to of the tackifier wax tank, until then all fusings move in the stirrer, cool to room temperature; Terminal hydroxy group polydiorganosiloxane polymkeric substance and fire retardant joined mediate 30～120 minutes in the kneader, join behind the cool to room temperature in the stirrer; Again silane crosslinker, catalyzer are added in the stirrer and stir together.Control stirrer vacuum tightness 0.06～0.1MPa, churning time 1～3 hour makes the sealing wax composition of finished product EMUs car terminal adapter.
Technique effect of the present invention: in EMUs car terminal adapter seal request, for fear of the infringement of signal wire, can not adopt hot melt processing, so the hot melt adhesive series products can not adopt; There are two problems in product aspect tackiness agent, and the one, before curing, can flow, can not construct; The 2nd, bonding force is too strong after solidifying, and the connector signal line can't be changed.The sealing wax composition of this patent does not contain solvent, and tack is good, the water-tight flame-resistant insulation; 100 ℃ of high temperature do not flow, and-35 ℃ of low temperature are not chapped; Be paste under the normal temperature, can be contained in the sharp afraid to speak out pipe and extrude easy construction; Thixotropy is strong, junctor install or motor-car accelerates, can delamination under the shock conditions of travelling; Main is, and the wax coating surface is sticking, suitable grow As time goes on, and the surface is plastics or rubbery state, but wax inside or semi-solid during the change signal wire, as long as also remove signal wire wax on every side, are mended packing sealing wax again and are got final product after finishing changing.
Embodiment
Further specify the present invention below by each embodiment, umber described in the embodiment is weight part.
Embodiment one: will be heated to 140 ℃ in 70 parts of polyethylene waxs, 6 parts of inputization wax of the polyisobutene tank first, stirs until then all fusings move in the stirrer, cool to room temperature, and stand-by; 12 parts of 10 parts in terminal hydroxy group polydiorganosiloxane polymkeric substance and aluminium hydroxide fire retardants are joined mediate 30～120 minutes in the kneader, join behind the cool to room temperature in the stirrer; To stir together in 1.5 parts of vinyltrimethoxy silanes, 0.5 part of adding stirrer of titanic acid ester again, control stirrer vacuum tightness 0.06MPa, churning time 2.5 hours makes finished product.
Embodiment two: will be heated to 140 ℃ in 65 parts of polyethylene waxs, 3 parts of inputization wax of the polyisobutene tank first, stirs until then all fusings move in the stirrer, cool to room temperature, and stand-by; 18 parts of 12 parts in terminal hydroxy group polydiorganosiloxane polymkeric substance and aluminium hydroxide fire retardants are joined mediate 30～120 minutes in the kneader, join behind the cool to room temperature in the stirrer; To stir together in 1.5 parts of vinyltrimethoxy silanes, 0.5 part of adding stirrer of titanic acid ester again.Control stirrer vacuum tightness 0.06MPa, churning time 2.5 hours makes finished product.
Embodiment three: will be heated to 140 ℃ in 63 parts of polyethylene waxs, 2 parts of inputization wax of the polyisobutene tank first, stirs until then all fusings move in the stirrer, cool to room temperature, and stand-by; 20 parts of 12 parts in terminal hydroxy group polydiorganosiloxane polymkeric substance and flame retardant of magnesium hydroxide are joined mediate 30～120 minutes in the kneader, join behind the cool to room temperature in the stirrer; To stir together in 2 parts of vinyltrimethoxy silanes, 1 part of adding stirrer of titanic acid ester again.Control stirrer vacuum tightness 0.06MPa, churning time 2.5 hours makes finished product.
Embodiment four: will be heated to 140 ℃ in 65 parts of polyethylene waxs, 2 parts of inputization wax of the polyisobutene tank first, stirs until then all fusings move in the stirrer, cool to room temperature, and stand-by; 18 parts of 12 parts in terminal hydroxy group polydiorganosiloxane polymkeric substance and aluminium hydroxide fire retardants are joined mediate 30～120 minutes in the kneader, join behind the cool to room temperature in the stirrer; To stir together in 2 parts of vinyltrimethoxy silanes, 1 part of adding stirrer of titanic acid ester again.Control stirrer vacuum tightness 0.06MPa, churning time 2.5 hours makes finished product.
As can be seen from the above table, the sealing wax tack that the present invention makes is good, and surface drying time is fast, the water-tight flame-resistant insulation;-35 ℃ of low temperature are not chapped; To the copper sheet non-corrosiveness, be suitable for motor-car master car terminal adapter.
It should be noted that; above content is in conjunction with concrete embodiment further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; under the above-mentioned guidance of invention; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in protection scope of the present invention.
Claims (10)
1. sealing wax composition that is used for EMUs car terminal adapter is characterized in that: comprise following component according to weight percent:
(a) 62～70% wax class materials
(b) 1～10% tackifier
(c) 15～25% fire retardants
(d) 5～15% terminal hydroxy group polydiorganosiloxane polymkeric substance
(e) 1～5% silane crosslinker
(f) 0.1～3% catalyzer.
2. the sealing wax composition for EMUs car terminal adapter according to claim 1, it is characterized in that: described wax class material is selected from Microcrystalline Wax, polyethylene wax, oxidized polyethlene wax, oxidized microcrystalline wax, Vaseline or these wax class material arbitrary proportion mixtures, and wherein polyethylene wax is that molecular weight ranges is 800～3000 paste wax.
3. the sealing wax composition for EMUs car terminal adapter according to claim 1, it is characterized in that: described tackifier are selected from the mixture of polybutene, polyisobutene, Atactic Polypropelene or these tackifier arbitrary proportions, and its molecular weight ranges is 3000～40000.
4. the sealing wax composition for EMUs car terminal adapter according to claim 1, it is characterized in that: described fire retardant is selected from the mixture of aluminium hydroxide, magnesium hydroxide or their arbitrary proportions.
5. the sealing wax composition for EMUs car terminal adapter according to claim 1, it is characterized in that: described terminal hydroxy group polydiorganosiloxane polymer architecture formula is
6. the sealing wax composition for EMUs car terminal adapter according to claim 1, it is characterized in that: described silane crosslinker is selected from vinyltrimethoxy silane, vinyltriethoxysilane, N-(beta-aminoethyl)-one or more mixtures in the γ aminopropyltriethoxy silane, gamma-amino propyl trimethoxy silicane, γ aminopropyltriethoxy silane.
7. the sealing wax composition for EMUs car terminal adapter according to claim 1, it is characterized in that: described catalyzer is selected from the mixture of one or both arbitrary proportions in organic carboxyl acid tin, the titanic acid ester.
8. the sealing wax composition for EMUs car terminal adapter according to claim 1, it is characterized in that: described catalyzer is selected from the mixture of one or both arbitrary proportions in organotin inner complex, the titanic acid ester.
9. the sealing wax composition for EMUs car terminal adapter according to claim 1 is characterized in that: described catalyzer is selected from the mixture of one or both arbitrary proportions in the inner complex of organotin inner complex, titanium.
10. method for preparing such as the sealing wax composition of the described EMUs car of the arbitrary claim of claim 1 to 9 terminal adapter is characterized in that:
At first described wax class material, described tackifier are heated in changing the wax tank, be controlled at 140 ℃ of temperature and stir, until then all fusings move in the stirrer, cool to room temperature; Described terminal hydroxy group polydiorganosiloxane polymkeric substance and described fire retardant joined mediate 30～120 minutes in the kneader, join behind the cool to room temperature in the stirrer; Described silane crosslinker, described catalyzer are added in the stirrer again and stir together, control stirrer vacuum tightness is 0.06～0.1MPa, and churning time is 1～3 hour, namely gets the sealing wax composition of EMUs car terminal adapter.
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| CN 201110024279 CN102153872B (en) | 2011-01-22 | 2011-01-22 | Seal wax composition for train end connector of motor train unit and preparation method thereof |
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| CN 201110024279 CN102153872B (en) | 2011-01-22 | 2011-01-22 | Seal wax composition for train end connector of motor train unit and preparation method thereof |
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| CN102382473B (en) * | 2011-09-17 | 2012-12-05 | 安徽江威精密制造有限公司 | Novel metalized film capacitor encapsulation wax |
| CN102367331B (en) * | 2011-10-27 | 2013-02-13 | 铜陵市新泰电容电器有限责任公司 | Metallized-film capacitor sealing agent |
| CN102627862B (en) * | 2012-03-21 | 2014-01-08 | 嘉兴学院 | Laminate flooring colorized solid sealing wax and preparation method thereof |
| CN105542490B (en) * | 2016-02-23 | 2018-07-03 | 柳州欧维姆机械股份有限公司 | A kind of bridge cable, anchor head resistance erosion sealing wax and preparation method thereof |
| CN106543749A (en) * | 2016-10-26 | 2017-03-29 | 安徽飞达电气科技有限公司 | A kind of capacitor encapsulating wax of excellent combination property |
| CN109628018B (en) * | 2018-11-29 | 2021-03-30 | 康威通信技术股份有限公司 | Method for applying oxidized PE wax to sealing protection of circuit board |
| CN110938334B (en) * | 2019-11-22 | 2021-08-10 | 柳州欧维姆结构检测技术有限公司 | High-dropping-point corrosion-resistant sealing wax for bridge cable and anchor head and preparation method thereof |
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| CN101263206A (en) * | 2005-07-22 | 2008-09-10 | 陶氏康宁公司 | Organosiloxane compositions |
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| US3738991A (en) * | 1971-05-13 | 1973-06-12 | Union Carbide Corp | Latex compositions |
| JPH09137002A (en) * | 1995-11-17 | 1997-05-27 | Sumitomo Bakelite Co Ltd | Thermoplastic elastomer and production thereof |
| CN1221626C (en) * | 2003-03-06 | 2005-10-05 | 成都硅宝科技实业有限责任公司 | Neutral silicone fire-retardent sealing glue and its preparing method |
| CN101586018A (en) * | 2008-12-23 | 2009-11-25 | 海龙艾默生（镇江）能源科技有限公司 | Expanded silicone fireproof seal gum and method of preparing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101263206A (en) * | 2005-07-22 | 2008-09-10 | 陶氏康宁公司 | Organosiloxane compositions |
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