CN103302929A - Solid rubber-micropore foamed rubber composite material and preparation method thereof - Google Patents
Solid rubber-micropore foamed rubber composite material and preparation method thereof Download PDFInfo
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- CN103302929A CN103302929A CN2013102498765A CN201310249876A CN103302929A CN 103302929 A CN103302929 A CN 103302929A CN 2013102498765 A CN2013102498765 A CN 2013102498765A CN 201310249876 A CN201310249876 A CN 201310249876A CN 103302929 A CN103302929 A CN 103302929A
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Abstract
The invention discloses a solid rubber-micropore foamed rubber composite material. The solid rubber-micropore foamed rubber composite material comprises a solid rubber layer and a micropore foamed rubber layer, wherein the solid rubber layer and the micropore foamed rubber layer are manufactured into an intergrated structure through a sulfurization shaping mode; a rubber damping base plate manufactured by the solid rubber-micropore foamed rubber composite material provided by the invention can enable the solid rubber layer and the micropore foamed rubber layer to form the inalienable whole through a chemical crosslinking reaction, and meanwhile, the characteristics of a solid rubber base plate and a micropore foamed rubber base plate are utilized; the requirements on high strength, high elasticity, stable performance and long service life of products are fully guaranteed, and a condition that the traditional solid rubber layer and the micropore foamed rubber layer can generate a series of problems because a bonding agent fails or has faults in a binding operational process is solved; the stability and security of heavy-duty railway transportation are guaranteed, and meanwhile, the technical problems that the single solid rubber base plate and the single micropore foamed base plate can not meet the heavy-duty railway transportation are solved.
Description
Technical field
The present invention relates to a kind of advanced composite material (ACM) and preparation method thereof, relate in particular to a kind of solid rubber and microporous foam rubber composite and preparation method thereof.
Background technology
Owing to expanding the needs of energy, China's heavy haul railway begins to retransmit exhibition by the 25T axle is heavy to the heavy even higher axle of 30T axle at present.Along with the heavy increase of axle, the heavy haul railway transportation is very serious to the destruction of track structure, and this just requires railway is undergone technological transformation.For example change II type pillow with III type pillow, replace the 60Kg/m rail with the 75Kg/m rail, these measures can increase track structure intensity and improve track stability, bear increasing wheel rail force to reduce the destruction to track structure, but meanwhile, Track Structure Stiffness has increased also.Under other condition same case.When adopting 75 kg/m rail.The vertical bending rigidity of rail has increased by 39.5% than 60 kg/m; The integral rigidity of track has increased by 8.6%.In other words, adopt 75 kg/m rail after, the flexibility decrease of track 8.6%.Since the decline of track integral, flexible, the acceleration that can impel conversely again track structure to destroy.Therefore, adopt 75kg/m rail replacement 60 kg/m rail simultaneously, should change rubber shock-absorbing backing plate under the long pillow of high strength, high resiliency, stable performance, life-span to remedy original just not enough track elasticity.
But the lower yielding rubber backing plate major part of the pillow of railway in the market is single solid rubber backing plate or single microporous foam rubber mat plate.Under the heavy heavy haul railway transportation of 30T axle, single solid rubber backing plate can't provide enough elasticity to reach the purpose of damping, and single microporous foam rubber mat plate can't guarantee that ballast aggregate, rubble etc. namely can't guarantee its serviceability and service life to the physical damage of himself under huge wheel rail force effect.
For the high resiliency, high strength, stable performance and the life-span that guarantee the rubber shock-absorbing backing plate long, adopted solid rubber layer and the composite molding of microporous foam rubber layer.Main method is to use binding agent that solid rubber layer and microporous foam rubber layer are bonded together at present, but this kind method is difficult to guarantee the uniformity of the rigidity of rubber shock-absorbing backing plate, simultaneously, prolongation along with the time, the impact of amblent air temperature, the flaw that tack coat easily lost efficacy or the bonding operating process occurs makes solid rubber layer and microporous foam rubber layer peel off focusing under the railway transportation effect, this moment, Rubber shock-absorbing pad panel stiffness and performance changed, and then affected stability and the security of heavy haul railway transportation.
Summary of the invention
In view of above-mentioned weak point, the object of the present invention is to provide a kind of characteristics that can take into account simultaneously solid rubber backing plate and microporous foam rubber mat plate, the integrated solid rubber that is applicable to the lower yielding rubber backing plate of railway pillow that intensity is high, good springiness, stable performance, life-span are long-microporous foam rubber composite and preparation method thereof.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of solid rubber-microporous foam rubber composite, comprise solid rubber layer and microporous foam rubber layer, solid rubber layer and microporous foam rubber layer are made as integrative-structure by the mode of sulfidization molding.
Best, the thickness of described solid rubber layer accounts for the 1/3-1/2 of whole thickness of composite material.
By a large amount of evidences:
When the thickness of solid rubber layer whole solid rubber-when microporous foam rubber composite thickness proportion volume was lower than 1/3, its quiet rigidity was lower than 40kN/mm, it is poor that it bears wheel rail force, can damage track structure.
When the thickness of solid rubber layer when whole solid rubber-microporous foam rubber composite thickness proportion volume surpasses 1/2, its quiet rigidity is higher than 65kN/mm, so that the track integral, flexible descends the acceleration that can impel track structure to destroy.
The preparation method of described solid rubber-microporous foam rubber composite may further comprise the steps:
A with mould and die preheating to 60 ℃, then inserts the solid rubber glue stuff compounding for preparing first in bed die, cover T-shaped cover plate, be forced into 10MPa, then voltage stabilizing 30 seconds is opened T-shaped cover plate and is removed the sizing material of extruding, again cover T-shaped cover plate, be forced into 10MPa, voltage stabilizing 30 seconds; In this step, it is in order to allow solid sizing material form fine and close glue-line that the solid rubber glue stuff compounding is carried out respectively twice compacting, can make microporous foam rubber and solid rubber follow-up when being sulfided into complex, thereby its contact-making surface does not have the performance that gas residue also can not affect composite yet.If with the disposable 10MPa that is forced into, voltage stabilizing 60 seconds, then when being sulfided into complex, its contact-making surface will have a little gas residue, affects the conjugation of microporous foam rubber and solid rubber follow-up for microporous foam rubber and solid rubber, and finished product easily strips off;
B removes T-shaped cover plate, removes the glue limit of unnecessary extrusion, puts into the microporous foam compounding rubber sizing material for preparing, cover cover plate, be forced into 5～6MPa, be warming up to 165～175 ℃, sulfuration 15～20min opens cover plate, obtains solid rubber-microporous foam rubber composite.
Solid rubber glue stuff compounding among the present invention can adopt the solid rubber glue stuff compounding of this area routine, also can by following component (weight portion proportioning) routinely technique be prepared from:
100 parts of EPDM
6～8 parts in activator
1～2 part in age resistor
80～100 parts of fillers
15～20 parts of softening agents
3～4 parts of vulcanizing agents.
Same, the microporous foam compounding rubber sizing material among the present invention can adopt the microporous foam compounding rubber sizing material of this area routine, also can by following component (weight portion proportioning) routinely technique be prepared from:
100 parts of EPDM
7～9 parts in activator
1～2 part in age resistor
80～100 parts of fillers
20～30 parts of softening agents
3～4 parts of vulcanizing agents
1～2 part of blowing agent.
Aforementioned activator is selected from zinc oxide and/or stearic acid.
Aforementioned age resistor is selected from RD and/or 4010NA.
Aforementioned filler is selected from one or more among carbon black N220, carbon black N330, the carbon black N660.
Aforementioned softening agent is paraffin oil.
Aforementioned vulcanizing agent is selected from one or more in cumyl peroxide, sulphur, N-cyclohexyl-2-benzothiazole sulfonamide, the tetramethylthiuram disulfide.
Aforementioned blowing agent is 0BSH.
The mould that adopts among the present invention is by bed die, and the T-shaped cover plate that matches with bed die and cover plate consist of.
Under the uniform temperature, two keys and vulcanizing agent in the rubber molecule react, and make its macromolecules cross-linking by linear structure become the large molecule of space network, thereby make sizing material possess high strength, high resiliency, high abrasion, anticorrosive etc. premium properties.In the present invention, make the network structure that forms an integral body between solid rubber layer and the microporous foam rubber layer by cross-linking reaction under uniform temperature and the pressure, simultaneously under the mould of uniqueness of the present invention and preparation technology's combination, effectively discharging faying face produces because of the microporous foam vulcanization of rubber between solid rubber layer and the microporous foam rubber layer gas, to make the two composite molding be inseparable monolithic article.
The rubber shock-absorbing backing plate that utilizes the present invention to produce makes solid rubber layer and microporous foam rubber layer form an indivisible integral body by chemical crosslink reaction, take into account simultaneously the characteristics of solid rubber backing plate and microporous foam rubber mat plate, fully guaranteed goods high strength, high resiliency, stable performance, the requirement that life-span is long, solved the series of problems that flaw that traditional solid rubber layer and microporous foam rubber layer occur because of adhesive failure or bonding operating process causes, guarantee stability and the security of heavy haul railway transportation, also solved the technical problem that single solid rubber backing plate and single microporous foam backing plate can't satisfy the heavy haul railway transportation simultaneously.
The present invention also once finishes the compound sulfurating stage that concentrates on of solid rubber layer and microporous foam rubber layer, and is time saving and energy saving, is beneficial to simultaneously control and adjusts goods rigidity.
Description of drawings
Fig. 1 is mould structure schematic diagram of the present invention.
Fig. 2 is that the present invention utilizes bed die and T-shaped cover plate to prepare the view of solid rubber layer.
Fig. 3 is that the present invention utilizes bed die and cover plate to prepare the view of solid rubber-microporous foam rubber composite.
Fig. 4 is the structural representation of solid rubber-microporous foam rubber composite.
Among the figure: 1. solid rubber layer; 2. microporous foam rubber layer; 3. bed die; 4.T type cover plate; 5. cover plate.
The specific embodiment
Below we will the present invention is further illustrated by specific embodiment.
I prepares the solid rubber glue stuff compounding:
Take by weighing the raw material of following weight parts proportioning: EPDM100 part, 7 parts in activator (zinc oxide and stearic acid), 1.5 parts in age resistor (RD and 4010NA), 90 parts of fillers (carbon black N220, carbon black N330 and carbon black N660), 20 parts of softening agents (paraffin oil), 3.5 parts of vulcanizing agents (cumyl peroxide, sulphur, N-cyclohexyl-2-benzothiazole sulfonamide and tetramethylthiuram disulfide).Adopt the technological means of this area routine to make the solid rubber glue stuff compounding raw material of above-mentioned weight portion proportioning, for subsequent use.
II prepares microporous foam compounding rubber sizing material:
Take by weighing the raw material of following weight parts proportioning: EPDM100 part, 8 parts in activator (zinc oxide and stearic acid), 1.5 parts in age resistor (RD and 4010NA), 90 parts of fillers (carbon black N220, carbon black N330 and carbon black N660), 25 parts of softening agents (paraffin oil), 4 parts of vulcanizing agents (cumyl peroxide, sulphur, N-cyclohexyl-2-benzothiazole sulfonamide and tetramethylthiuram disulfide), 2 parts of blowing agents (OBSH), adopt the technological means of this area routine to make microporous foam compounding rubber sizing material the raw material of above-mentioned weight portion proportioning, for subsequent use.
In conjunction with Fig. 1-shown in Figure 4, the mould that the present embodiment adopts is by bed die 3, and the T-shaped cover plate 4 that matches with bed die 3 and cover plate 5 consist of.
The preparation of III solid rubber-microporous foam rubber composite:
A is first with mould and die preheating to 60 ℃, then in bed die 3, insert the solid rubber glue stuff compounding (consumption of control sizing material that the step I prepares, so that the solid rubber that finally makes-microporous foam rubber composite, the thickness of its solid rubber layer 1 account for whole solid rubber-microporous foam rubber composite thickness 1/3), cover T-shaped cover plate 4, be forced into 10MPa, then voltage stabilizing 30 seconds is opened T-shaped cover plate 4 and is removed the sizing material of extruding, and again covers T-shaped cover plate 4, be forced into 10MPa, voltage stabilizing 30 seconds;
B removes T-shaped cover plate 4, remove the glue limit of unnecessary extrusion, put into the microporous foam compounding rubber sizing material (consumption of control sizing material that the step II prepares, so that the solid rubber that finally makes-microporous foam rubber composite, the thickness of its microporous foam rubber layer 4 account for whole solid rubber-microporous foam rubber composite thickness 2/3), cover cover plate 5, be forced into 5～6MPa, be warming up to 165～175 ℃, sulfuration 15～20min, open cover plate 5, obtain solid rubber-microporous foam rubber composite as shown in Figure 4, the prepared solid rubber of the present embodiment-microporous foam rubber composite thickness is 15mm, and wherein solid rubber layer 1 is 5mm, and microporous foam rubber layer 2 is 10mm.
The preparation method of solid rubber glue stuff compounding, microporous foam compounding rubber sizing material is with embodiment 1.
The preparation of solid rubber-microporous foam rubber composite is also identical with embodiment 1, different is that the solid rubber glue stuff compounding is different with the consumption of microporous foam compounding rubber sizing material, the prepared solid rubber of the present embodiment-microporous foam rubber composite thickness is 15mm, wherein the solid rubber layer is 6mm, and the microporous foam rubber layer is 9mm.
The preparation method of solid rubber glue stuff compounding, microporous foam compounding rubber sizing material is with embodiment 1.
The preparation of solid rubber-microporous foam rubber composite is also identical with embodiment 1, different is that the solid rubber glue stuff compounding is different with the consumption of microporous foam compounding rubber sizing material, the prepared solid rubber of the present embodiment-microporous foam rubber composite thickness is 15mm, wherein the solid rubber layer is 7mm, and the microporous foam rubber layer is 8mm.
We send embodiment 1,2,3 products obtained therefroms and carry out hot strength, elongation rate of tensile failure, compression set, hot air aging, composition qualitative analysis, water resistance etc. with Chinese railway science institute's metal and chemistry institute and detect, and testing result all meets the industry standard regulation.
Quiet stiffness test:
The solid rubber that makes at embodiment 1,2,3 respectively-microporous foam rubber composite cuts 6 samples that are of a size of 200 * 250 * 15mm, is divided into test group, control group, three every group.The test group sample is put into the hot air aging case carry out degradation according to 100 ± 1 ℃, 72h condition, the control group sample places under the room temperature.
After the end to be aging, several groups of samples are carried out quiet rigidity test, test result is as follows.
Quiet rigidity contrast test before and after table 1 is aging
As can be seen from Table 1 the solid rubber that makes of embodiment 1,2,3-microporous foam rubber composite aging under 100 ± 1 ℃, 72h condition after, quiet rigidity increases to some extent, this is because in this stage, rubber inside has occured take cross-linked effect as main series of chemical, this just so that the crosslink density of goods further rises, causes the performance risings such as composite article hardness.When loading identical power, the decrement of sample will be than smaller before aging when carrying out quiet stiffness test, and the quiet rigidity value that calculates gained according to formula will be larger, and quiet rigidity raise after namely goods wore out.
According to table 1 calculate the solid rubber that embodiment 1,2,3 makes-microporous foam rubber composite aging before and after the quiet stiffness variation rate of sample be 11.4%, 12.8%, 7.6%, all satisfy the requirement of the quiet stiffness variation rate in aging front and back of iron section regulation≤20%.As seen use the solid rubber of this technique preparation-microporous foam rubber composite, rigidity is very stable.
The test of the railway ballast contact-making surface rib of anti-the angle:
The summit of the positive pyrometric cone of simulation rubble corner angle is pressed into is of a size of 50 * 50 * 15mm sample (this sample is 3 parts, take from respectively embodiment 1,2,3 products obtained therefroms) solid rubber aspect 5mm, behind 70 ℃, 24h heat treatment, take out, place under the room temperature behind the 1h with slide measure measure residual pressure fall into the degree of depth all≤4mm, and the surface is intact, without crack performance.
Disbonded test:
Use electronic tension tester one end to clamp the solid rubber layer, the other end is clamped the microporous foam rubber layer and is carried out disbonded test, and the destruction of sample must occur in microporous foam rubber layer itself, and can not appear at the faying face of the two.
Claims (6)
1. solid rubber-microporous foam rubber composite, it is characterized in that: comprise solid rubber layer (1) and microporous foam rubber layer (2), solid rubber layer (1) and microporous foam rubber layer (2) are made as integrative-structure by the mode of sulfidization molding.
2. solid rubber according to claim 2-microporous foam rubber composite, it is characterized in that: the thickness of described solid rubber layer (1) accounts for the 1/3-1/2 of whole thickness of composite material.
3. the preparation method of claim 1 or 2 described solid rubber-microporous foam rubber composites is characterized in that: said method comprising the steps of:
A is first with mould and die preheating to 60 ℃, then in bed die (3), insert the solid rubber glue stuff compounding for preparing, cover T-shaped cover plate (4), be forced into 10MPa, then voltage stabilizing 30 seconds is opened T-shaped cover plate (4) and is removed the sizing material of extruding, and again covers T-shaped cover plate (4), be forced into 10MPa, voltage stabilizing 30 seconds;
B removes T-shaped cover plate (4), removes the glue limit of unnecessary extrusion, puts into the microporous foam compounding rubber sizing material for preparing, cover cover plate (5), be forced into 5～6MPa, be warming up to 165～175 ℃, sulfuration 15～20min opens cover plate (5), obtains solid rubber-microporous foam rubber composite.
4. the preparation method of solid rubber according to claim 3-microporous foam rubber composite is characterized in that: meter by weight ratio, described solid rubber glue stuff compounding by following component routinely technique be prepared from:
100 parts of EPDM
6～8 parts in activator
1～2 part in age resistor
80～100 parts of fillers
15～20 parts of softening agents
3～4 parts of vulcanizing agents.
5. the preparation method of solid rubber according to claim 3-microporous foam rubber composite is characterized in that: meter by weight ratio, described microporous foam compounding rubber sizing material by following component routinely technique be prepared from:
100 parts of EPDM
7～9 parts in activator
1～2 part in age resistor
80～100 parts of fillers
20～30 parts of softening agents
3～4 parts of vulcanizing agents
1～2 part of blowing agent.
6. the preparation method of solid rubber according to claim 3-microporous foam rubber composite is characterized in that: described mould is by bed die (3), and the T-shaped cover plate (4) that matches with bed die (3) and cover plate (5) consist of.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104523109A (en) * | 2014-12-10 | 2015-04-22 | 广州同欣康体设备有限公司 | Elastic safety rubber mat and preparation method thereof |
| CN110005082A (en) * | 2019-03-26 | 2019-07-12 | 杭州中岩工程科技有限公司 | A kind of microcellular elastomeric rubber weather strip and preparation method thereof |
| CN113043677A (en) * | 2020-02-26 | 2021-06-29 | 深圳市鑫银环保橡塑制品有限公司 | Heat-sealable silicon rubber microcellular foam material and preparation method thereof |
| CN114407458A (en) * | 2021-12-29 | 2022-04-29 | 易宝（福建）高分子材料股份公司 | Composite molded body based on EPDM (ethylene-propylene-diene monomer) foaming material and preparation method thereof |
| CN115157641A (en) * | 2022-08-17 | 2022-10-11 | 青岛科技大学 | Extension roller for preparing polarizer PVA film and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001030424A (en) * | 1999-07-16 | 2001-02-06 | Inoac Corp | Chip composite molding and its manufacture |
| CN102182121A (en) * | 2011-01-27 | 2011-09-14 | 江阴海达橡塑股份有限公司 | Elastic shim plate under rubber foamed iron shim plate |
| CN202293483U (en) * | 2011-09-13 | 2012-07-04 | 江苏东旭科技有限公司 | Viscoelastic composite damping vibration attenuation rubber plate for ship deck |
| CN102862447A (en) * | 2012-10-16 | 2013-01-09 | 北京化工大学 | Tire crown surface-layer microcellular foaming high-performance tire and manufacturing method thereof |
| CN103144244A (en) * | 2013-03-20 | 2013-06-12 | 四维尔丸井(广州)汽车零部件有限公司 | Plastic electroplating product and preparation method thereof |
-
2013
- 2013-06-21 CN CN201310249876.5A patent/CN103302929B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001030424A (en) * | 1999-07-16 | 2001-02-06 | Inoac Corp | Chip composite molding and its manufacture |
| CN102182121A (en) * | 2011-01-27 | 2011-09-14 | 江阴海达橡塑股份有限公司 | Elastic shim plate under rubber foamed iron shim plate |
| CN202293483U (en) * | 2011-09-13 | 2012-07-04 | 江苏东旭科技有限公司 | Viscoelastic composite damping vibration attenuation rubber plate for ship deck |
| CN102862447A (en) * | 2012-10-16 | 2013-01-09 | 北京化工大学 | Tire crown surface-layer microcellular foaming high-performance tire and manufacturing method thereof |
| CN103144244A (en) * | 2013-03-20 | 2013-06-12 | 四维尔丸井(广州)汽车零部件有限公司 | Plastic electroplating product and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104523109A (en) * | 2014-12-10 | 2015-04-22 | 广州同欣康体设备有限公司 | Elastic safety rubber mat and preparation method thereof |
| CN104523109B (en) * | 2014-12-10 | 2015-12-09 | 广州同欣康体设备有限公司 | Elastic safety ground cushion and preparation method thereof |
| CN110005082A (en) * | 2019-03-26 | 2019-07-12 | 杭州中岩工程科技有限公司 | A kind of microcellular elastomeric rubber weather strip and preparation method thereof |
| CN113043677A (en) * | 2020-02-26 | 2021-06-29 | 深圳市鑫银环保橡塑制品有限公司 | Heat-sealable silicon rubber microcellular foam material and preparation method thereof |
| CN114407458A (en) * | 2021-12-29 | 2022-04-29 | 易宝（福建）高分子材料股份公司 | Composite molded body based on EPDM (ethylene-propylene-diene monomer) foaming material and preparation method thereof |
| CN115157641A (en) * | 2022-08-17 | 2022-10-11 | 青岛科技大学 | Extension roller for preparing polarizer PVA film and manufacturing method thereof |
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| CN103302929B (en) | 2015-10-28 |
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