CN1699053A - Composite shaped body - Google Patents
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- CN1699053A CN1699053A CN 200510070682 CN200510070682A CN1699053A CN 1699053 A CN1699053 A CN 1699053A CN 200510070682 CN200510070682 CN 200510070682 CN 200510070682 A CN200510070682 A CN 200510070682A CN 1699053 A CN1699053 A CN 1699053A
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Abstract
To provide a composite molded product capable of suitably suppressing molding failure.
Description
Technical field
The present invention relates to be used for for example weather strip, luggage case sealing strip, expose the composite shaped body of automobile components such as flange panel.
Background technology
As existing composite shaped body, weather strip for example possesses the installation portion on the flange of the door opening periphery that is installed in vehicle body and is subjected to the butt of door and produces the hollow seal portion of strain.This weather strip is made of composite shaped body, and this composite shaped body possesses solid parts that forms aforementioned installation portion and the spongy parts that form the aforementioned hollow sealing.As this composite shaped body, structure as follows is well-known.For example the spy opens the 2002-160327 communique, discloses lightweight solid parts and sponge member are engaged the composite shaped body that forms.This lightweight solid parts and sponge member are formed by the rubber composition foaming that contains ethylene-propylene-non-conjugated diene hydrocarbon rubbers (EPDM) respectively.The proportion of lightweight solid parts is 0.8～1.0, and the proportion of sponge member is less than or equal to 0.45.This composite shaped body makes every effort to improve the tensile strength characteristics of the faying face of lightweight solid parts and sponge member.
Summary of the invention
Yet, in above-mentioned existing composite shaped body,, can enumerate problem shown below corresponding to the composition that contains of the rubber composition of lightweight solid parts.That is, as shown in Figure 5, there is such situation in the composition that contains corresponding to the rubber composition of lightweight solid parts, that is, after the rubber composition foaming of sponge member was finished, the rubber composition of lightweight solid parts just began sulfuration.In this case, to remain in the possibility of faying face of two parts very high for the bubble that is produced by the foaming of the rubber composition of sponge member.So, as shown in Figure 6,, carry out the sulfuration of the rubber composition of two parts 101,102 having on the faying face of lightweight solid parts 101 and sponge member 102 under the residual state of bubble 103.Its result, at the residual position of bubble, lightweight solid parts 101 and sponge member 102 are peeled off easily, might cause moulding bad.
The problem points that the present invention is conceived to these prior aries existence proposes, and purpose provides and can suppress the bad composite shaped body of moulding well.
To achieve these goals, the composite shaped body of technical scheme 1 described invention, be to possess the 1st layer and be laminated to the 2nd layer composite shaped body on the 1st layer, its main points are, aforementioned the 1st layer is made of the 1st rubber composition that contains ethylene-propylene-alkadiene rubber and acrylonitrile-butadiene rubber, aforementioned the 2nd layer of the 2nd rubber composition that produces bubble by when sulfuration constitutes
In the bubble generation field when aforementioned the 2nd rubber composition vulcanizes, the viscosity height of aforementioned the 2nd rubber composition of ratio of viscosities of aforementioned the 1st layer rubber composition.
Constitute thus, the 1st rubber composition contains the outstanding acrylonitrile-butadiene rubber of sulfuration property.That is to say that produce the field at aforementioned bubble, the 1st rubber composition has begun sulfuration, the 1st rubber composition is hardened to a certain degree.So, producing the field at aforementioned bubble, the viscosity of the 1st rubber composition becomes than the viscosity height of the 2nd rubber composition.Therefore, can be suppressed at aforementioned bubble and produce the field, the bubble that produces during the foaming of the 2nd rubber composition makes the 1st layer to produce distortion and remain on this faying face on the faying face of layers 1 and 2.Therefore, in technical scheme 1 described invention, on the faying face of layers 1 and 2, do not have bubble residual and with both the sulfuration.Its result, the moulding that has suppressed composite shaped body well is bad.
The composite shaped body of technical scheme 2 described inventions, main points are that in technical scheme 1 described invention, aforementioned bubble generation field is 90～180 ℃.
Constitute thus, in 90～180 ℃ scope, the 2nd rubber composition foaming beginning produces bubble thereupon.That is to say that in 90～180 ℃ scope, the viscosity of the 1st rubber composition becomes than the viscosity height of aforementioned the 2nd rubber composition.
The composite shaped body of technical scheme 3 described inventions, main points are that in technical scheme 1 or 2 described must inventions, aforementioned the 1st layer, it is 85～95 according to JIS K 6253 with the hardness that hardometer type A measures.
Constitute thus, can obtain promptly to have guaranteed that suitable hardness has abundant flexible composite shaped body again.
By composite shaped body of the present invention, it is bad to suppress moulding well.
Description of drawings
Fig. 1 is the skeleton diagram of the composite shaped body of expression present embodiment.
Fig. 2 is the curve map of the foaming process of expression the 2nd rubber composition.
Fig. 3 is the curve map of foaming process of the 2nd rubber composition of 150 ℃ of expressions.
Fig. 4 is the curve map of foaming process of the 2nd rubber composition of 170 ℃ of expressions.
Fig. 5 is the curve map of the sulfidation of the existing composite shaped body of expression.
Fig. 6 is the skeleton diagram of the existing composite shaped body of expression.
The specific embodiment
Below, based on the description of drawings embodiment that composite shaped body of the present invention is specific.
As shown in Figure 1, the composite shaped body 11 of present embodiment is by constituting as the 1st layer solid rubber layer 12 with as the 2nd layer the sponge rubber layer 13 that is laminated on this solid rubber layer 12.This composite shaped body 11 is mainly used in weather strip, luggage case sealing strip, exposes automobile components such as flange panel.
About this composite shaped body 11, at first solid rubber layer 12 is carried out following explanation.This solid rubber layer 12 is made by the 1st rubber composition.The 1st rubber composition contains ethylene-propylene-non-conjugated diene hydrocarbon rubbers (EPDM) and acrylonitrile-butadiene rubber (NBR) as main component (component of polymer).Aforementioned EPDM by ethene, propylene, and the non-conjugated diene hydrocarbon constitute, wherein, can enumerate ethylidene norcamphane, dicyclopentadiene, 1,4-hexadiene, methyltetrahydro indenes, methyl norcamphane etc. as the non-conjugated diene hydrocarbon.These non-conjugated diene hydrocarbon can use separately, also two or more can be used in combination.As present embodiment, under the situation of composite shaped body 11, preferably adopt with the EPDM of ethylidene norcamphane as the non-conjugated diene hydrocarbon as the automobile component use.
NBR contains it in order to ensure the hardness of solid rubber layer 12.The content of this NBR preferably with respect to 100 weight portions of EPDM, is 3～40 weight portions, more preferably 5～40 weight portions, most preferably 5～20 weight portions.Under the situation that contains quantity not sufficient 3 weight portions of NBR, the possibility height that the hardness of solid rubber layer 12 can't fully guarantee.On the other hand, the content of NBR surpasses under the situation of 40 weight portions, and the compression set of solid rubber layer 12 strengthens probably, and hot strength also reduces.
Solid rubber layer 12 is 85～95 according to JIS K 6253 (ISO7619) with the hardness (hardometer A hardness) that hardometer type A measures.When the hardometer A of solid rubber layer 12 hardness less than 85, the possibility of composite shaped body 11 that can't obtain enough hardness is big.On the other hand, when the hardometer A of solid rubber layer 12 hardness surpassed 95, the possibility that the pliability of composite shaped body 11 descends was big.
In addition, as above-mentioned NBR, also can be the sex change NBR that specific monomer is polymerized.As aforementioned specific monomer, can enumerate any one compounds such as having epoxy radicals, carboxyl, hydroxyl, amino, sulfonic group, phosphate, carboxylic acid ester groups.The content of the monomer of sex change NBR is from improving its sulfuration property and improving the viewpoint of the hardness of solid rubber layer 12, preferred 1～60 mole of %, more preferably 5～60 moles of %, most preferably 10～60 moles of %.
In addition, also can be in the rubber composition that forms this solid rubber layer 12, blended natural rubber (NR), isoprene rubber isoprenoids such as (IR) rubber, butadiene rubber (BR), SBR styrene butadiene rubbers (SBR), chloroprene rubber (CR) etc.
And, in the present embodiment, preferred intermixtures such as mixed filler, softening agent, vulcanizing agent, processing aid in the rubber composition that forms solid rubber layer 12.
This filler is for the hardness that improves solid rubber layer 12 or improve its rubber performance and use.As the filler that uses for the hardness that improves solid rubber layer 12, can enumerate carbon black, no silhydrite, aqueous silica etc.Wherein, preferably use carbon black with good reinforcement performance as the filler of present embodiment.On the other hand, as the filler that uses for the rubber performance that improves solid rubber layer 12, can enumerate surface treatment calcium carbonate, chalk, calcium carbonate, magnesium carbonate, surface treatment clay, clay, talcum etc.In addition, these fillers can use separately, but also two or more is used in combination.
Softening agent for the rubber composition that forms solid rubber layer 12 with plasticity and handling ease is used.As this softening agent, can enumerate petroleum-type softening agents such as paraffin class process oil (paraffin class oil), cycloalkane process oil, aromatic series generic operation oil, lubricating oil, asphalt, vaseline; Coal tar such as coal tar, coal tar asphalt oil-softener; Castor oil, linseed oil, rapeseed oil, coconut wet goods fatty oils softening agent; Wax classes such as beeswax, Brazil wax, lanolin; Aliphatic acid and soaps such as castor oil acid, palmitic acid, barium stearate, calcium stearate, zinc laurate; Synthetic high polymer materials such as Petropols, random polypropylene, coumarone-indene resin; Tall oil; Substitute ((sulfuration) factice) etc.In addition, as this softening agent, also can adopt plasticizers such as dioctyl phthalate, di-n-octyl sebacate.Two or more is used in combination but these can use also separately.In the middle of these,,, preferably use paraffin class process oil or cycloalkane process oil from controlling the pollution this point of solid rubber layer 12 well as the softening agent of present embodiment.
Vulcanizing agent uses for the rubber molecule with chain vulcanizes and gives its elasticity.As vulcanizing agent, can enumerate powder sulphur, insoluble sulfur, precipitation sulphur, colloidal state sulphur, surface treatment sulphur etc.These can use separately, but also two or more is used in combination.And, also can use the sulphur of 4,4 ' two thiobis dimorpholines, alkyl phenol disulphide, tetramethylthiuram disulfide, dipentamethylene thiuram tetrasulfide etc. is discharged the compound that obtains as this vulcanizing agent.
In addition, when preferably stating vulcanizing agent before use, mix vulcanization accelerator and vulcanization accelerator additive.These vulcanization accelerators and vulcanization accelerator additive are used for the vulcanization reaction that promotes the chain rubber molecule.As vulcanization accelerator, can enumerate compounds such as thiurams, Thiazoling type, dithiocarbamate.As vulcanization accelerator additive, can enumerate compounds such as senior aliphatic acid such as metal oxides such as zinc oxide or stearic acid.These can use separately, but also two or more is used in combination.
Processing aid uses for the mouldability that improves rubber composition.Can enumerate senior aliphatic acid such as castor oil acid, stearic acid, palmitic acid, laurate as processing aid; Senior soaps such as barium stearate, zinc stearate, calcium stearate; The ester class of senior aliphatic acid such as castor oil acid, stearic acid, palmitic acid, laurate etc.These can use separately, but also two or more is used in combination.
Secondly, carry out following explanation for sponge rubber layer 13.This sponge rubber layer 13 is the foaming bodies that obtained by the 2nd rubber composition that contains blowing agent.As the main component (component of polymer) of the 2nd rubber composition, can enumerate EPDM as hereinbefore etc.In addition in the present embodiment, do not make and contain aforesaid NBR in the 2nd rubber composition, to give sponge rubber layer 13 with flexibility.
As aforementioned blowing agent, can enumerate organic foaming agent and inorganic foaming agent.As organic foaming agent, can enumerate 4,4 '-disulfonyl hydrazide phenylate (benzene sulfonyl hydrazide) (OBSH), N, N '-dimethyl-N, N '-dinitrosoterephthalamine, N, N '-nitro compounds such as dinitropentamethylenetetramine; Azo dicarbonamide, azodiisobutyronitrile, azo dicyclo be azo-compounds such as nitrile, azo p-phenylenediamine (PPD), barium azodicarboxylate; Benzene sulfonyl hydrazide, toluene sulfonyl hydrazide, biphenyl sulphonyl-3,3 '-sulfohydrazide compounds such as inferior sulfohydrazide, Azide calcium, 4, amide compounds such as 4 '-methyl diphenylene diisocyanate, p-toluenesulfonamide etc.As inorganic foaming agent, can enumerate organic foaming agents such as sodium acid carbonate, sodium carbonate, ammonium bicarbonate, ammonium carbonate, ammonium nilrite.These can use separately, but also two or more is used in combination.In the middle of these,,, preferably adopt OBSH from obtaining suitable blowing temperature this point as the blowing agent of present embodiment.The blowing temperature of this OBSH is approximately 140 ℃.
Also can make in aforementioned the 2nd rubber composition, contain filler same as described above, softening agent, vulcanizing agent, vulcanization accelerator, vulcanization accelerator additive and processing aid.
The modulation of above-mentioned the 1st rubber composition and the 2nd rubber composition uses the hermetic type mixer to carry out.
It is as shown in Figure 1 lamination shape with various rubber composition extrusion modlings that the composite shaped body 11 of present embodiment uses single lead screw ex truding briquetting machines.When carrying out this moulding, be in the UHF sulfur tank, various rubber compositions to be carried out heat treated.At this moment, in 90～180 ℃ scope, the foaming of the 2nd rubber composition.Here, in 90～180 ℃ scope, the viscosity of the 1st rubber composition becomes than the viscosity height of the 2nd rubber composition.That is to say that the 1st rubber composition vulcanizes in aforementioned range.Therefore, under the 1st rubber composition hardened to a certain degree state, the 2nd rubber composition foamed.
As mentioned above, under the 1st rubber composition hardened to a certain degree state, the bubble that produces during the foaming of the 2nd rubber composition can not flow to the faying face of two rubber layers 12,13.Just can not produce bubble, and bubble can not remain in this faying face at the faying face of two rubber layers 12,13.Therefore,, as shown in Figure 1, remain in state in the sponge rubber layer 13 equably, carry out the sulfuration of two rubber compositions with bubble 14 by present embodiment.Therefore, different with the composite shaped body of prior art, can obtain to suppress the bad composite shaped body of moulding well.
As described below by the effect that aforementioned embodiments produces.
When the 1st rubber composition is vulcanized, promote vulcanization reaction by NBR.Its result, in the bubble generation field of the 2nd rubber composition, the 1st rubber composition vulcanizes, and its viscosity becomes than the viscosity height of the 2nd rubber composition.Therefore, compare with the composite shaped body that the 2nd rubber composition has foamed before the sulfuration of the 1st rubber composition of prior art, in the present embodiment, the bubble that produces during foaming is difficult to flow to faying face.Therefore, by the composite shaped body 11 of present embodiment, can residual bubble at the faying face of solid rubber layer 12 and sponge rubber layer 13, two rubber layers 12,13 are engaged well, so it is bad to suppress moulding.
The 1st rubber composition and the 2nd rubber composition cure in the UHF sulfur tank.That is to say, because these rubber composition heats are conducted equably, so can bring into play the action effect of NBR well.
[embodiment]
Next, enumerate embodiment and comparative example, above-mentioned embodiment is carried out more specific description.
The foaming process of＜the 2 rubber composition 〉
Modulation contains ethylene-propylene-ethylidene norcamphane polyrubber as EPDM, as the OBSH of blowing agent and the 2nd rubber composition of various compounding ingredients.Then, the 2nd rubber composition is carried out heat treated with certain programming rate, observe the process of its foaming.Its result as shown in Figure 2.
As shown in Figure 2, confirm that the 2nd rubber composition produces the moisture gasification of EPDM in 90～125 ℃ scope.In addition, the 2nd rubber composition significantly rises from its blow pressure, foams in 140～170 ℃ scope.Therefore, the bubble of the 2nd rubber composition generation zone is divided into moisture gasification zone (90～125 ℃) and these two zones of foamed zones (140～170 ℃).
In addition, in this foamed zones, produce from the 2nd rubber composition under the situation of excessive bubble, the moulding that occurs the composite shaped body that bubble thus produces easily is bad.So, being enough to suppress the bad an amount of bubble of moulding in order to produce, the expansion ratio of the sponge rubber layer that is formed by the 2nd rubber composition is decided to be 1.85～1.91 or 1.92～2.3.
The foaming process of＜the 2 rubber composition under set point of temperature 〉
Here, observed the foaming process of the 2nd rubber composition in the arbitrary temp (150 ℃ and 170 ℃) in being equivalent to aforementioned bubble generation field.Fig. 3 represents the foaming process of 150 ℃ the 2nd rubber composition.As shown in the drawing, at 150 ℃, be the foamed zones of the 2nd rubber composition from the scope that begins to heat 23～75 seconds.Fig. 4 represents the foaming process of 170 ℃ the 2nd rubber composition.As shown in the drawing, at 170 ℃, be the foamed zones of the 2nd rubber composition from the scope that begins to heat 7～20 seconds.
The evaluation of＜sulfuration torque value 〉
Each composition shown in the mixture table 1, modulation formation is as the 1st rubber composition (embodiment 1～2, comparative example 1～3) of the 1st layer solid rubber layer.In addition, the numerical value unit of the content of each composition of expression table 1 is a weight portion.
Then, the viscosity when vulcanizing in order to inquire into the 1st, the 2nd rubber composition is measured sulfuration torque value separately.Just, the 1st rubber composition and form the 2nd rubber composition of the 2nd layer (sponge rubber layer, little foaming rubber layer and the 2nd solid rubber layer), adopt キ ユ ラ ス ト メ one WR type (JSR (strain) system), (150 ℃ of set points of temperature, 170 ℃), under 12 minutes the condition, measure the sulfuration torque values according to JIS K 6300.In addition, so-called little foaming rubber layer is its expansion ratio layer littler than the expansion ratio of above-mentioned sponge rubber layer.The expansion ratio of this little foaming rubber layer is 1.08～1.25.In addition, the 2nd rubber composition that forms the 2nd solid rubber layer is compared with the 2nd rubber composition that forms above-mentioned sponge rubber layer, does not contain blowing agent.
[table 1]
| | | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| ?EPDM | ????100 | ????100 | ????100 | ????100 | ????100 |
| ?NBR | ????6 | ????6 | ????- | ????- | ????- |
| Liquid PB | ????- | ????- | ????12 | ????12 | ????12 |
| Carbon black | ????120 | ????140 | ????90 | ????110 | ????140 |
| Paraffin class oil | ????20 | ????20 | ????5 | ????20 | ????20 |
| ?OBSH | ????0 | ????0 | ????0 | ????0 | ????0 |
At this moment, each composition of table 1 is as follows.
EPDM: ethylene-propylene-ethylidene norcamphane polyrubber
NBR: acrylonitrile-butadiene rubber
Liquid PB (PB Polybutene-1): Shin Nihon Oil Co., Ltd's system, B3000
Carbon black: Asahi Caton Co., Ltd.'s system, the rising sun 60
Paraffin class oil: Idemitsu Kosen Co., Ltd.'s system, PW380
OBSH: Yonghe County changes into Co., Ltd.'s system, neodymium
The evaluation of the sulfuration torque value under (1) 150 ℃
Here, measure in embodiment 1, comparative example 1,2 and various the 2nd layer, from beginning to heat after 20 seconds and the sulfuration torque value of each rubber composition after 80 seconds.In addition, by Visual Confirmation, the solid rubber layer that the rubber composition of embodiment 1 and comparative example 1,2 is formed as under the 2nd layer the situation, has or not the faying face bubble with the sponge rubber layer as the 1st layer.So-called faying face bubble refers to the bubble in the faying face generation of solid rubber layer and sponge rubber layer.These results are shown in the table 2.The unit of sulfuration torque value is N/m in this table.
[table 2]
| Sulfuration torque value after 20 seconds | Sulfuration torque value after 80 seconds | Have or not the faying face bubble | |||
| The | Embodiment | 1 | ????0.64 | ????0.90 | Do not have |
| | ????- | ????- | ????- | ||
| Comparative example 1 | ????0.64 | ????0.59 | Have | ||
| Comparative example 2 | ????0.41 | ????0.36 | Have | ||
| Comparative example 3 | ????- | ????- | ????- | ||
| The 2nd layer | The sponge rubber layer | ????0.44 | ????0.86 | ????- | |
| Little foaming rubber layer | ????0.50 ? | ????0.48 ? | ????- ? | ||
| The solid rubber layer | ????0.59 | ????0.50 | ????- |
As shown in table 2, because contain NBR among the embodiment 1, so promoted the vulcanization reaction of the 1st rubber composition, in the middle of after 20 seconds and after 80 seconds any, the sulfuration torque value of the 1st rubber composition is all than any sulfuration torque value height of the 2nd rubber composition.Just, the critical zone in foamed zones (23～75 seconds), the viscosity height of ratio of viscosities the 2nd rubber composition of the 1st rubber composition.Thereby can infer that the 1st rubber composition vulcanizes (sclerosis) in foamed zones, suppress the generation of faying face bubble thereupon well.
On the other hand, in comparative example 1,2, the sulfuration torque value of (after 80 seconds) is lower than the sulfuration torque value of the 2nd rubber composition that forms sponge rubber layer 13 after the foamed zones.Just, confirm that the 1st rubber composition is not fully hardened in comparative example 1,2 in aforementioned foamed zones.This is presumably, owing in the 1st rubber composition, do not contain NBR, so vulcanization reaction is not promoted fully that the result has produced the faying face bubble.
The evaluation of (2) 170 ℃ sulfuration torque value
Here, measure in embodiment 1～2, comparative example 1～3 and various the 2nd layer, after beginning heating, after 5 seconds and the sulfuration torque value of each rubber composition after 20 seconds.In addition, by Visual Confirmation, the solid rubber layer that will be formed by each routine rubber composition as under the 2nd layer the situation, has or not the faying face bubble with the sponge rubber layer as the 1st layer.These results are shown in the table 3.The unit of the sulfuration torque value in this table is N/m.
[table 3]
| Sulfuration torque value after 5 seconds | The torque value of after cure in 20 seconds | Have or not the faying face bubble | |||
| The | Embodiment | 1 | ????0.551 | ????0.423 | Do not have |
| | ????0.515 | ????0.368 | Do not have | ||
| Comparative example 1 | ????0.346 | ????0.279 | Have | ||
| Comparative example 2 | ????0.282 | ????0.231 | Have | ||
| Comparative example 3 | ????0.246 | ????0.201 | Have | ||
| The 2nd layer | The sponge rubber layer | ????0.303 | ????0.359 | ????- | |
| Little foaming rubber layer | ????0.356 | ????0.282 | ????- | ||
| The solid rubber layer | ????0.508 | ????0.308 | ????- |
As shown in table 3,170 ℃ with aforementioned 150 ℃ coming to the same thing, in the embodiment 1,2 that contains NBR, owing to promoted the vulcanization reaction of the 1st rubber thing, it is bad that the result has suppressed moulding well.In addition, in comparative example 1～3, owing to do not contain NBR, can not fully promote the vulcanization reaction of the 1st rubber composition, it is bad that the result can't suppress moulding.
In addition, in the present embodiment, following described change also can be arranged and specialize.
Also can with adopt little foaming rubber layer as foaming body (expansion ratio: 1.08～1.25), perhaps as the 2nd solid rubber layer of non-foaming body as the 2nd layer.In this case, because form the rubber composition of the 2nd solid rubber layer as described above, compare with the 2nd rubber composition that forms above-mentioned sponge rubber layer 13, do not contain blowing agent, so supposition and this sponge rubber layer are in the same manner, get the moisture gasification that produces EPDM in the scope at 90～125 ℃.
Also can in the 1st rubber composition and the 2nd rubber composition, mix well-known antiaging agent, defoamer, antiscorching agent, incombustible agent, with stick, lubricant, pigment etc.
Also can get for UHF sulfur tank, by press cure, jar sulfuration, injection moulding, hot gas sulfuration, LCM sulfuration, PCM sulfuration etc., or by these combinations being carried out the sulfuration of each rubber composition.
The modulation of the 1st rubber composition and the 2nd rubber composition also can adopt mixing roll to carry out.
Also the composite shaped body 11 of present embodiment can be used for building rubber layers such as industrial parts such as rubber clad roller, sealing material, filler and sclerosis piece, rubber tile, pad etc.
And, be described as follows by the understandable technological thought of aforementioned embodiments.
Each described composite shaped body as technical scheme 1～3 is characterized in that, aforementioned the 2nd layer is made of foaming body, and the expansion ratio of this foaming body is less than or equal to 1.91 or be less than or equal to 2.3 more than or equal to 1.92 greater than 1.
A kind of forming method of composite shaped body, be pressed in layer by layer on the 1st layer the 2nd, the composite shaped body that its heat treated is obtained then, it is characterized in that, aforementioned the 1st layer is made of the 1st rubber composition that contains ethylene-propylene-alkadiene rubber and acrylonitrile-butadiene rubber, aforementioned the 2nd layer of the 2nd rubber composition that produces bubble by when sulfuration constitutes, bubble when aforementioned the 2nd rubber composition vulcanizes produces zone, the viscosity height of aforementioned the 2nd rubber composition of the ratio of viscosities of the rubber composition of aforementioned ground floor.
Claims (8)
1. composite shaped body possesses the 1st layer and be laminated on the 1st layer the 2nd layer, it is characterized in that,
Aforementioned the 1st layer is made of the 1st rubber composition that contains ethylene-propylene-non-conjugated diene hydrocarbon (EPDM) and acrylonitrile-butadiene rubber (NBR),
Aforementioned the 2nd layer of the 2nd rubber composition that produces bubble by when sulfuration constitutes.
In the bubble generation field when aforementioned the 2nd rubber composition vulcanizes, the viscosity height of aforementioned the 2nd rubber composition of ratio of viscosities of aforementioned the 1st layer rubber composition.
2. composite shaped body as claimed in claim 1 is characterized in that, aforementioned bubble generation field is 90～180 ℃.
3. composite shaped body as claimed in claim 1 or 2 is characterized in that, aforementioned the 1st layer, it is 85～95 according to JIS K 6253 with the hardness that hardometer type A measures.
4. composite shaped body as claimed in claim 1 is characterized in that, aforementioned non-conjugated diene hydrocarbon is ethylidene norcamphane, dicyclopentadiene, 1,4-hexadiene, methyltetrahydro indenes, methyl norcamphane.
5. composite shaped body as claimed in claim 1 is characterized in that, with respect to 100 weight portions of EPDM, the content of aforementioned NBR is 3～40 weight portions.
6. composite shaped body as claimed in claim 1 is characterized in that,
Aforementioned the 1st layer also contains filler,
Aforementioned filler comprises carbon black.
7. composite shaped body as claimed in claim 1 is characterized in that,
Aforementioned the 1st layer also contains softening agent,
Aforementioned softening agent comprises paraffinic process oil or cycloalkane process oil.
8. composite shaped body as claimed in claim 1 is characterized in that,
The aforementioned second layer also contains blowing agent,
Aforementioned blowing agent comprises 4, and 4 '-disulfonyl hydrazide phenylate (benzene sulfonyl hydrazide) (OBSH).
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| JP2004148248 | 2004-05-18 | ||
| JP2004148248A JP2005329571A (en) | 2004-05-18 | 2004-05-18 | Composite molded product |
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| CN100415507C CN100415507C (en) | 2008-09-03 |
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| CN108329602A (en) * | 2017-01-13 | 2018-07-27 | 杭州星庐科技有限公司 | Rubber composition and processing method, and apply its sealing element and production method |
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| 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 |
| 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 |
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| CN102002193B (en) * | 2010-11-19 | 2012-07-04 | 四川宏亿复合材料工程技术有限公司 | Foamed rubber plate and manufacturing process thereof |
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| WO1998031540A1 (en) * | 1997-01-21 | 1998-07-23 | Mitsui Chemicals, Inc. | Vulcanized molding having surface decorative layer, painted thermoplastic resin composition, and painted elastomer composition |
| SE510065C2 (en) * | 1997-08-25 | 1999-04-12 | Rehband Anatomiska Ab | Elastic laminate material without chlorine compounds, suitable for body contact |
| US6420015B1 (en) * | 2000-09-27 | 2002-07-16 | Milliken & Company | Cushioned rubber floor mat and process |
| JP4562898B2 (en) * | 2000-11-24 | 2010-10-13 | 三井化学株式会社 | Composite molded products and their uses |
-
2004
- 2004-05-18 JP JP2004148248A patent/JP2005329571A/en active Pending
-
2005
- 2005-05-18 CN CNB2005100706824A patent/CN100415507C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108329602A (en) * | 2017-01-13 | 2018-07-27 | 杭州星庐科技有限公司 | Rubber composition and processing method, and apply its sealing element and production method |
| CN109208465A (en) * | 2017-07-04 | 2019-01-15 | 北京橡胶工业研究设计院有限公司 | A kind of bridge expanssion joint rubber seal |
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005329571A (en) | 2005-12-02 |
| CN100415507C (en) | 2008-09-03 |
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