CN107540963A - A kind of composite material of airtight layer of tire and preparation method thereof - Google Patents
A kind of composite material of airtight layer of tire and preparation method thereof Download PDFInfo
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- CN107540963A CN107540963A CN201710626897.2A CN201710626897A CN107540963A CN 107540963 A CN107540963 A CN 107540963A CN 201710626897 A CN201710626897 A CN 201710626897A CN 107540963 A CN107540963 A CN 107540963A
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Abstract
The present invention relates to a kind of composite material of airtight layer of tire and preparation method thereof, belongs to high-performance all-steel radial tyre field.The present invention by nitrile rubber by introducing the airtight layer formula of brombutyl, substantially increase air-tightness, suitable compatilizer has been selected to carry out capacity increasing modifying to BIIR and NBR, nanoclay is mixed into dispersed phase, and stretched surely by adding polar micromolecules plasticizer regulation sizing material, air-tightness, resistance to ozone, flex fatigue property and the mechanical property of material are further improved, disclosure satisfy that the performance requirement of high-performance radial-ply tyre inner liner.In addition, the present invention also has the advantages that equipment is simple, simple to operate, controllability is good, cost is low, amplified beneficial to industrialization.
Description
Technical field
The invention belongs to all-steel load-bearing radial field of automobile tires, and in particular to a kind of composite material of airtight layer of tire and
Its preparation method.
Background technology
All-steel radial truck tire air-tight layer sizing material is mainly brombutyl (BIIR) at present, because it has preferably
Air-tightness and excellent flex fatigue property.But BIIR processing characteristics is poor, parks 3,4 days and prevulcanization easily occurs, make
Decline into elastomeric compound bond properties, extreme difficulties are brought to production scheduling.Ensureing the good combination property of tyre airtight layer
Under the premise of, the dosage for reducing inner liner BIIR as far as possible is significant for actual production.
The air-tightness of tubeless radial-ply tyre inner liner sizing material is particularly important for the normal use of tire, such as air-tightness not
Good, tire often in deficency state downward driving, is also easy to produce earlier period damage.Therefore high flexing fatigue performance and resistance to can kept
On the basis of ozone performance, air-tightness is improved, is particularly important to tubeless tyre.
The content of the invention
In view of the above-mentioned problems, the purpose of the present invention is a kind of composite material of airtight layer of tire of design, it can keep good comprehensive
The airtight layer formula of performance, and the rubber compounding method of appropriate design, applied to all-steel load-bearing radial tire, reach gas
The good requirement of close property height, flex fatig resistance, ozone-resistant aging property.
An object of the present invention is to provide a kind of composite material of airtight layer of tire, for high airtight all-steel radial tyre
Inner liner rubber, it is prepared by the raw material including following components, in parts by weight：
Brombutyl and the parts by weight of nitrile rubber 100；
Wherein, brombutyl is 50-90 parts by weight, preferably 50-80 parts；Nitrile rubber is 10-50 parts, preferably 20-
50 parts；
Composite material of airtight layer of tire provided by the invention, it is with brombutyl (BIIR) and nitrile rubber (NBR)
Rubber, wherein brombutyl are as continuous phase, and nitrile rubber is as dispersed phase.
The nitrile rubber is using nitrile rubber commonly used in the art in the prior art, high acrylonitrile in can selecting
With the nitrile rubber of middle acrylonitrile content, it is all suitable in wider acrylonitrile content scope, and have preferable effect.
In order to improve the compatibility of brombutyl and nitrile rubber, using modified pitch as bulking agent, improve
Two-phase is disperseed, and improves the flex fatigue property and physical and mechanical properties of composite.
Modified pitch existing in the prior art may be selected in the modified pitch, as rubber modified asphalt, resin modified drip
Blue or green, mineral-filled material modified pitch etc..
The size of the nanoclay is in below 100nm, optional nanoclay existing in the prior art.In butyronitrile rubber
Glue mutually melts and is mixed into nanoclay, further improves the gas barrier property and ozone-resistant aging property of composite.
The present invention is used in combination using traditional rubber plastizing agent and polar micromolecules plasticizer, wherein traditional rubber plastizing agent
At least one of plasticizer existing in the prior art, preferred paraffinic oils, aromatic naphtha, retinal, coal tar may be selected.
Polar micromolecules plasticizer existing in the prior art may be selected in polar micromolecules plasticizer in the present invention, preferably
For dioctyl phthalate (DOP), dibutyl phthalate (DBP), tricresyl phosphate (TCP), dioctyl adipate
(DOA), at least one of dioctyl azelate (DOZ).
The present invention is by BIIR and the glue of NBR two and uses and is applied to tyre airtight layer formula first, due to NBR have compared with
High air-tightness, nanoclay and nitrile rubber blending after and brombutyl and air-tightness be better than pure BIIR it is airtight
Layer；Due to NBR's and use can cause flexing fatigue hydraulic performance decline, and the present invention proposes to improve by reducing sizing material hardness and stretching surely
The fatigue behaviour of system, but traditional rubber plastizing agent (paraffin oil, aromatic naphtha etc.) is little to NBR plasticization effect, and the present invention will
Polar micromolecules plasticizer introduces rubber compounding, because polar micromolecules plasticizer has well to the cyano group on NBR main chains
Shielding action, therefore effectively improve due to NBR and with the excessive high hardness problem brought, the flex fatig resistance of sizing material greatly improved
Performance；NBR ozone resistance is mixed into nanoclay lamella slightly poorer to BIIR, the present invention by being melted in dispersed phase NBR, and one
Aspect improves ozone resistance (being attributed to iris action of the clay layer to ozone molecule), on the other hand further increases
The air-tightness of sizing material.In addition nitrile rubber mutually can form fine dispersion in brombutyl phase after adding modified pitch,
Be advantageous to improve combination property.
Activating agent existing in the prior art, preferably zinc oxide, magnesia, stearic acid may be selected in activating agent in the present invention
At least one of.
The optional age resistor existing in the prior art of age resistor in the present invention, preferably antioxidant 4010NA (N- phenyl-
N'- isopropyls p-phenylenediamine), anti-aging agent RD (2,2,4- trimethyl -1,2- dihyaroquinolines polymer), antioxidant A W (6- second
Epoxide -2,2,4- trimethyl -1,2- dihyaroquinolines), (N- (1,3- dimethylbutyls)-N '-phenyl is to benzene two for antioxidant 4020
Amine), antioxidant A (N- phenyl-α-naphthylamines), antioxidant D (N- phenyl-β-naphthylamines), age resistor TMPPD (2,4,6- tri--(N-1,4
Dimethyl amyl group-p-phenylenediamine) -1,3,5- triazines) in two or more.
Accelerator existing in the prior art, preferably altax (curing benzene may be selected in accelerator in the present invention
And thiazole), accelerant CZ (N cyclohexyl 2 benzothiazole sulfenamide), accelerator NS (N- tert-butyl groups benzothiazole time sulphonyl
Amine), Vulcanization accelerator TMTD (tetramethylthiuram disulfide), TM monex TM (tetramethylthiuram monosulfide), diphenylguanidine TDM
(dithio morpholine), accelerant NOBS (N- oxygen diethylene -2-[4-morpholinodithio sulfenamide), the accelerator DZ (hexamethylene of N, N- bis-
Base -2-2 benzothiazole sulfonamides) in one or more.
In the composite material of airtight layer of tire of the present invention, it can be needed to add vulcanizing agent, vulcanizing activator etc. according to processing
Various auxiliary agents, its dosage are conventional amount used, or are adjusted according to the requirement of actual conditions.
The two of the object of the invention are to provide a kind of preparation method of composite material of airtight layer of tire, comprise the following steps：
Nitrile rubber is weighed by the dosage rubber master batch material is made with nanoclay, mixed with brombutyl and modified pitch
Refining, sequentially adds the group including activating agent, age resistor, carbon black, plasticizer, polar micromolecules plasticizer, accelerator, sulphur
Point, it is kneaded uniform after cure.
Test technology is used in the present invention：(1) brombutyl is extracted by formula, nitrile rubber is made with nanoclay
Rubber master batch material, two kinds of glue, modified pitch are together added at 90 DEG C of banbury and are kneaded 2min, after sequentially add activating agent, age resistor,
Plasticizer, small molecule plasticizer and carbon black, 130 DEG C of dumpings of rotating speed are risen after 65r/min is kneaded moment of torsion stabilization.(2) first step is treated
After gained sizing material is cooled to 60 DEG C or so, mill bag roller is gone to, sequentially adds accelerator, sulphur, cooperation is turned over glue operation, eaten
Small powder, last clot packing, bottom sheet after being kneaded uniformly.(3) elastomeric compound is vulcanized into 30min under 151 DEG C, 15MPa, obtained
BIIR/NBR tread composites.
Beneficial effects of the present invention：
The present invention greatly improves the air-tightness of inner liner composite by brombutyl and with nitrile rubber.
The flex fatigue property of sizing material is carried out with ozone resistance test in the case where determining deformation, therefore the present invention is proposed by adjusting glue
The hardness of material and stretch surely to improve both performances, specific implementation method is to introduce small molecule plasticizer.
The composite material of airtight layer of tire meets the index of air-tightness, and air transmission coefficient is less than 0.60 × 10-17m2s- 1Pa-1, air-tightness is far superior to enterprise requirements, and (air transmission coefficient of the medium formula of Some Enterprises is 1.43 × 10-17m2s-1Pa-1)。
The composite material of airtight layer of tire has good physical and mechanical properties, excellent resistance to ozone aging and resistance to flexion tired
Labor performance, it is a kind of high-performance tubeless, the close layer material of nausea.
Brief description of the drawings
Fig. 1 is ESEM back scattering (BSE) figure of composite material of airtight layer of tire prepared by embodiment 2.
Fig. 2 is ESEM back scattering (BSE) figure of the composite material of airtight layer of tire of not increase-volume prepared by comparative example 2.
Comparison diagram 1 and Fig. 2, it is found that the blend dispersed phase size after capacity increasing modifying reduces, scattered to be more uniformly distributed.
Embodiment
Technical scheme is described further with reference to embodiment.
Embodiment 1
Formula is made up of the raw material of following parts by weight：80 parts of brombutyl BIIR, nitrile rubber NBR (3365) 20
Part, 2 parts of nanoclay, 5 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, antioxidant 4020
2 parts, 1 part of anti-aging agent RD, 10 parts of aromatic naphtha, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Preparation method：
Prepare the rubber master batch of nitrile rubber/nanoclay on a mill first, then go to banbury, add BIIR,
NBR/ nanoclays rubber master batch, modified pitch (CJ-100) and then the 2min additions after the inferior moments of torsion of 90 DEG C of rotating speed 40r/min are stable
ZnO, MgO, SA, moment of torsion add antioxidant 4020, anti-aging agent RD after stablizing 1min, the charcoal of half are added after the stable 1min of moment of torsion
Black, aromatic naphtha and DOP, moment of torsion add second half carbon black, aromatic naphtha and DOP after stablizing 1min, adjusted after the stable 1min of moment of torsion
For rotating speed to 65r/min, temperature rises to 130 DEG C of back glues, and cooling goes to the machine of beginning to pratise, and left and right is tapped rubber each 2 times after bag roller, Ran Houjia
Enter altax, left and right rubber tapping is each 2 times and then to add sulphur, after each 2 times of left and right rubber tapping clot make a call to bottom sheet after 3 triangle bags 2 times
Elastomeric compound is made.After curing curve and Mooney viscosity being surveyed after 8h, next day vulcanization.
Embodiment 2-9 preparation method is substantially the same manner as Example 1, and simply the content of each component is different, behind can arrange
Go out the constituent content of each embodiment.
Embodiment 2
Formula is made up of the raw material of following parts by weight：70 parts of brombutyl BIIR, nitrile rubber NBR (3365) 30
Part, 3 parts of nanoclay, 7.5 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, age resistor
4020 2 parts, 1 part of anti-aging agent RD, 10 parts of aromatic naphtha, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Embodiment 3
Formula is made up of the raw material of following parts by weight：60 parts of brombutyl BIIR, nitrile rubber NBR (3365) 40
Part, 4 parts of nanoclay, 10 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, age resistor
4020 2 parts, 1 part of anti-aging agent RD, 10 parts of aromatic naphtha, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Embodiment 4
Formula is made up of the raw material of following parts by weight：80 parts of brombutyl BIIR, nitrile rubber NBR (2865) 20
Part, 2 parts of nanoclay, 5 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, antioxidant 4020
2 parts, 1 part of anti-aging agent RD, 10 parts of aromatic naphtha, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Embodiment 5
Formula is made up of the raw material of following parts by weight：70 parts of brombutyl BIIR, nitrile rubber NBR (2865) 30
Part, 3 parts of nanoclay, 7.5 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, age resistor
4020 2 parts, 1 part of anti-aging agent RD, 10 parts of aromatic naphtha, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Embodiment 6
Formula is made up of the raw material of following parts by weight：60 parts of brombutyl BIIR, nitrile rubber NBR (2865) 40
Part, 4 parts of nanoclay, 10 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, age resistor
4020 2 parts, 1 part of anti-aging agent RD, 10 parts of aromatic naphtha, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Embodiment 7
Formula is made up of the raw material of following parts by weight：60 parts of brombutyl BIIR, nitrile rubber NBR (3365) 40
Part, 4 parts of nanoclay, 15 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, age resistor
4020 2 parts, 1 part of anti-aging agent RD, 10 parts of aromatic naphtha, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Embodiment 8
Formula is made up of the raw material of following parts by weight：60 parts of brombutyl BIIR, nitrile rubber NBR (2865) 40
Part, 4 parts of nanoclay, 15 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, age resistor
4020 2 parts, 1 part of anti-aging agent RD, 10 parts of aromatic naphtha, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Embodiment 9
Formula is made up of the raw material of following parts by weight：60 parts of brombutyl BIIR, nitrile rubber NBR (3365) 40
Part, 4 parts of nanoclay, 20 parts of modified pitch (CJ-100), 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, age resistor
4020 2 parts, 1 part of anti-aging agent RD, 15 parts of aromatic naphtha, DOP5 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
Comparative example 1
Formula is made up of the raw material of following parts by weight：Brombutyl BIIR100 parts, 3 parts of zinc oxide, magnesia 0.1
Part, 1 part of stearic acid, 2 parts of antioxidant 4020,1 part of anti-aging agent RD, 10 parts of aromatic naphtha, 60 parts of carbon black, 1.5 parts of altax,
0.5 part of sulphur.
Comparative example 2
Formula is made up of the raw material of following parts by weight：70 parts of brombutyl BIIR, nitrile rubber NBR (3365) 30
Part, 3 parts of nanoclay, 3 parts of zinc oxide, 0.1 part of magnesia, 1 part of stearic acid, 2 parts of antioxidant 4020,1 part of anti-aging agent RD, virtue
10 parts of hydrocarbon ils, DOP3 parts, 60 parts of carbon black, 1.5 parts of altax, 0.5 part of sulphur.
According to national standard, quantitative measurement is carried out respectively to embodiment 1 to embodiment 9, comparative example 1-2, it is physical
Energy index see the table below 1.
Shao A hardness determines according to GB_T 531.1-2008；100% stretches surely, 300% stretches surely, tensile strength, pulls apart elongation
Rate, tensile set determine according to GB_T 528-2009；Tearing strength determines according to GB_T529-2008；Barrier properties for gases
It can be determined according to GB/T 7755-2003/ISO2782；There is rupture time and determined according to GB/T 7762-2014 in ozone aging；
6 grades of breach numbers of flexing fatigue determine according to GB/T13934-92.
The physical performance index of the embodiment 1-9 of table 1 and comparative example 1-2 composite
Pass through comparative example 1-7 and comparative example 1, it can be deduced that conclusion, and after having used nitrile rubber, by modified pitch
After capacity increasing modifying, air-tightness is significantly improved, and flex fatigue property, ozone-resistant aging property are preferable, sizing material it is comprehensive
Close the requirement that performance meets high-air-tightness all-steel radial tire air/tight layer rubber.
The air transmission coefficient minimum performance of BIIR rubber is best in all rubber, general BIIR and with the ventilative system of other rubber
Number can all rise, but the composite of the present invention has accomplished air transmission coefficient decline, from table 1 it follows that air-tightness is best
Formula (0.45 × 10-17m2s-1Pa-1) compare BIIR formula air-tightness (0.6 × 10-17m2s-1Pa-1) 25% can be improved.
The particular content of the present invention is described in detail for above example, but the present invention is not limited to the implementation
Example, those skilled in the art can make a variety of equal replacements, such as with small powders such as different activating agents, vulcanizing agents to original
Expect the change of proportioning, raw material ratio of the present invention etc. is processed with different implementing process.These equal modifications are replaced equal
Belong to this application claims in the range of.
Claims (6)
1. a kind of composite material of airtight layer of tire, it is characterised in that the composite is prepared by the raw material including following components
And obtain, each component is in parts by weight：
2. composite material of airtight layer of tire as claimed in claim 1, it is characterised in that the composite is by including following
The raw material of component is prepared, and each component is in parts by weight：
3. composite material of airtight layer of tire as claimed in claim 1 or 2, it is characterised in that：
The size of the nanoclay is in below 100nm.
4. composite material of airtight layer of tire as claimed in claim 1 or 2, it is characterised in that：
The plasticizer is selected from least one of paraffin oil, aromatic naphtha, retinal, coal tar.
5. composite material of airtight layer of tire as claimed in claim 1 or 2, it is characterised in that：
The polar micromolecules plasticizer be selected from dioctyl phthalate, dibutyl phthalate, tricresyl phosphate, oneself
At least one of adipate, dioctyl azelate.
A kind of 6. preparation method of composite material of airtight layer of tire as described in one of Claims 1 to 5, it is characterised in that including
Following steps：
Nitrile rubber is weighed by the dosage rubber master batch material is made with nanoclay, be kneaded with brombutyl and modified pitch,
The component including activating agent, age resistor, carbon black, plasticizer, polar micromolecules plasticizer, accelerator, sulphur is sequentially added,
It is kneaded uniform after cure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710626897.2A CN107540963B (en) | 2017-07-27 | 2017-07-27 | Tire inner liner composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626897.2A CN107540963B (en) | 2017-07-27 | 2017-07-27 | Tire inner liner composite material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107540963A true CN107540963A (en) | 2018-01-05 |
| CN107540963B CN107540963B (en) | 2020-09-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396252A (en) * | 2018-04-24 | 2019-11-01 | 中国石油化工股份有限公司 | The preparation method of nanocomposite and the preparation method of vulcanized rubber |
| CN110982283A (en) * | 2019-11-15 | 2020-04-10 | 谢广 | Method for manufacturing inorganic nonmetal storage material |
| CN111745848A (en) * | 2020-06-17 | 2020-10-09 | 通力轮胎有限公司 | Pure brominated butyl rubber airtight layer and mixing method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1024493A1 (en) * | 1981-06-19 | 1983-06-23 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Полимерных Строительных Материалов | Sealing melt |
| CN103131055A (en) * | 2011-11-28 | 2013-06-05 | 北京橡胶工业研究设计院 | Apex on all-steel radial tire and tire with the same |
-
2017
- 2017-07-27 CN CN201710626897.2A patent/CN107540963B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1024493A1 (en) * | 1981-06-19 | 1983-06-23 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Полимерных Строительных Материалов | Sealing melt |
| CN103131055A (en) * | 2011-11-28 | 2013-06-05 | 北京橡胶工业研究设计院 | Apex on all-steel radial tire and tire with the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396252A (en) * | 2018-04-24 | 2019-11-01 | 中国石油化工股份有限公司 | The preparation method of nanocomposite and the preparation method of vulcanized rubber |
| CN110982283A (en) * | 2019-11-15 | 2020-04-10 | 谢广 | Method for manufacturing inorganic nonmetal storage material |
| CN111745848A (en) * | 2020-06-17 | 2020-10-09 | 通力轮胎有限公司 | Pure brominated butyl rubber airtight layer and mixing method and application thereof |
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| CN107540963B (en) | 2020-09-22 |
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