CN106496658B - A kind of natural rubber and preparation method thereof of superfined flyash filling - Google Patents
A kind of natural rubber and preparation method thereof of superfined flyash filling Download PDFInfo
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- CN106496658B CN106496658B CN201610874130.7A CN201610874130A CN106496658B CN 106496658 B CN106496658 B CN 106496658B CN 201610874130 A CN201610874130 A CN 201610874130A CN 106496658 B CN106496658 B CN 106496658B
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- 239000010881 fly ash Substances 0.000 title claims abstract description 80
- 244000043261 Hevea brasiliensis Species 0.000 title claims abstract description 50
- 229920003052 natural elastomer Polymers 0.000 title claims abstract description 50
- 229920001194 natural rubber Polymers 0.000 title claims abstract description 50
- 238000011049 filling Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 32
- 229920001971 elastomer Polymers 0.000 claims abstract description 29
- 239000005060 rubber Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000006229 carbon black Substances 0.000 claims abstract description 25
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 24
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 238000012986 modification Methods 0.000 claims abstract description 16
- 125000003118 aryl group Chemical group 0.000 claims abstract description 14
- 230000004048 modification Effects 0.000 claims abstract description 13
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000005864 Sulphur Substances 0.000 claims abstract description 12
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 12
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 12
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000008117 stearic acid Substances 0.000 claims abstract description 12
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 239000010883 coal ash Substances 0.000 claims abstract description 11
- 238000004073 vulcanization Methods 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 238000013019 agitation Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims 1
- 239000000084 colloidal system Substances 0.000 claims 1
- 239000005062 Polybutadiene Substances 0.000 abstract description 22
- 229920002857 polybutadiene Polymers 0.000 abstract description 22
- 239000000203 mixture Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000000227 grinding Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 32
- 239000002994 raw material Substances 0.000 description 11
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 8
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 8
- 238000009826 distribution Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 229910000077 silane Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical compound N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
Abstract
The invention discloses a kind of natural rubbers and preparation method thereof of superfined flyash filling.The superfined flyash being modified through terminal hydroxy liquid butadiene rubber is added, is that terminal hydroxy group is added by silane coupling agent Si 69 to form along fourth liquid rubber post-modification；By silane coupling agent Si 69 it is evenly dispersed be added drop-wise in superfined flyash, terminal hydroxy liquid butadiene rubber is added after stirring, obtain modified superfined flyash, carbon black is added in aromatic naphtha, it is uniformly mixed grinding, the mixture of natural rubber, zinc oxide, stearic acid, anti-aging agent, carbon black and aromatic naphtha, the superfined flyash of modification and accelerating agent are successively sequentially added in mixer, are kneaded uniform；Then sulphur is added on a mill, thin logical rear bottom sheet obtains after being vulcanized after parking.The present invention can assign the performances such as rubber product high maximum elongation, high tensile, high-tear strength by modified coal ash filling natural rubber, while reduce pollution of the flyash to environment, have the characteristics that preferable economic benefit and energy conservation and environmental protection.
Description
Technical field
The present invention relates to a kind of natural rubber and preparation method thereof, more particularly to a kind of natural rubber of superfined flyash filling
Glue and preparation method thereof.
Background technology
Natural rubber has very outstanding physicochemical characteristics, such as excellent resilience, insulating properties, water-resisting property and plastic
Property etc., also there are the properties such as oil resistant, acidproof, alkaline-resisting, heat-resisting, cold-resistant, pressure-resistant, wear-resisting after proper treatment, have extensive
Purposes.The addition of filler and supporting material can improve intensity, the hardness of rubber, be one of the primary raw material of rubber work, dosage
It is almost suitable with rubber itself, and the performance of many preciousnesses of rubber can be assigned.The price of common reinforcing rubber material carbon black compared with
For costliness, requirement of the every profession and trade to rubber economic cost, pattern is had been unable to meet.Inorganic mineral filler is inexpensive with its, has work(
Can property and it is in an increasingly wide range of applications in rubber product.The density of the mineral reinforcing fillers used in rubber industry is basic
On all in 2.4g/cm3More than, all it is higher than the density (1.8g/cm of the supporting materials such as carbon black3), their addition makes rubber product
Density increase, constrain use of the inorganic mineral supporting material in rubber to a certain extent.Therefore, a kind of density is found
Low, filler that is cost-effective and can improving rubber performance has become an active demand of rubber industry.Flyash it is close
Degree is very low, has raw material sources wide as reinforcing rubber filling filler, process for producing is simple, small investment, at low cost to wait spies
Point.Using flyash filled rubber, carbon black can be not only saved, but also new approach can be provided for the comprehensive utilization of flyash, improve powder
The economic value added of coal ash can also solve problem of environmental pollution, have significant economic benefit and social benefit.
Flyash belongs to inorganic polar substance, and the intrinsic hydrophilic and oleophobic property in surface makes it in the organic polymers such as rubber
Wellability it is poor, be not easy to disperse, a large amount of fillings easily lead to mechanical property of materials decline.Improve filling of the flyash in rubber
Performance and reinforcing effect, it is necessary to which the surface modification treatment for carrying out increasing surface-active to it enhances it between organic polymer
Interface compatibility.Different modifying agent is different to the modified effect of flyash, so selecting suitable surfactant, is coupled
Agent and compounded technology etc. carry out cladding processing, are the steps for improving modified effect key.
Invention content
In order to solve the problems, such as that background technology, the present invention propose a kind of natural rubber of superfined flyash filling
And preparation method thereof, after the deep processings such as ultra-fine grinding and surface modification, reinforcing property and loading have prodigious carry
It is high.
The technical solution adopted by the present invention is：
One, a kind of natural rubber of superfined flyash filling：
The superfined flyash being modified through terminal hydroxy liquid butadiene rubber is added, the additive amount of superfined flyash is natural rubber
The 10~60% of quality.
The grain size of the superfined flyash is 0.9~5 μm, specific surface area 700-1000m2/kg。
The superfined flyash is by silane coupling agent Si-69 addition terminal hydroxy groups are along fourth liquid rubber post-modification
At superfined flyash, silane coupling agent Si-69 and terminal hydroxy group are 10~60 parts along the addition quality proportioning of fourth liquid rubber：0.6
Part：2~10 parts.
The natural rubber, number-average molecular weight be 60000~80000g/mol, weight average molecular weight be 300000~
340000g/mol。
The terminal hydroxy liquid butadiene rubber, hydroxyl value 0.65-0.7mmol/g, number-average molecular weight 3000~
5000g/mol, additive amount are the 2~10% of natural rubber quality.
The Material synthesis of the following mass parts of natural rubber of the superfined flyash filling：
Two, a kind of preparation method of the natural rubber of superfined flyash filling, comprises the steps of：
1) by silane coupling agent Si-69 it is evenly dispersed be added drop-wise in superfined flyash, gentle agitation is after 3 minutes, is added
Terminal hydroxy liquid butadiene rubber stirs 5 minutes, obtains modified superfined flyash；
2) aromatic naphtha is added in carbon black, be uniformly mixed and carefully ground 5 minutes；
3) natural rubber, zinc oxide, stearic acid, anti-aging agent, carbon black and aromatic naphtha are successively sequentially added in mixer
Mixture, modification superfined flyash and accelerating agent, be kneaded uniform；Then sulphur, thin logical rear bottom sheet are added on a mill；
4) vulcanized after parking 1-3 days, the natural rubber of the superfined flyash filling is obtained after vulcanization.
Conditions of vulcanization is 4.6MPa × T90 × 150 DEG C in the step 4).
The Material synthesis of the following mass parts of natural rubber of the superfined flyash filling：
The present invention is to keep the original technique of natural rubber in a kind of method of modified superfine flyash filling natural rubber
On the basis of constant, stearic acid, zinc oxide, all kinds of accelerating agents, antiaging agent are added in rubber mixing process, by modified place
Modified superfine flyash after reason, which is directly added together with natural rubber be fully kneaded in natural rubber, obtains raw rubber, through sulphur
The natural rubber filled by superfined flyash is made in chemical conversion type, and the additive amount of superfined flyash is generally 10%~60%, (with
On the basis of the quality of natural rubber), thus have the advantages that：
1. keeping the excellent performance of natural rubber while rubber cost is greatly lowered, elongation is pulled apart with very high
Rate, tensile strength and tearing strength.
2. raw material sources are wide, cheap, production method is simple, can make full use of existing rubber vulcanization process equipment.
3. the method for the present invention can provide another approach for the comprehensive utilization of flyash, it can both reduce handling flyash
Expense, and pollution of the flyash to environment can be reduced, rubber product high maximum elongation, high tensile, high tearing can be assigned
The performances such as intensity have opened up new application direction to improve the technology content and economic value added of flyash, have significant warp
Benefit of helping and social benefit.
Specific implementation mode
With reference to embodiment, the invention will be further described.
Embodiment 1
Its raw material forms (mass parts)：
The specific surface area 700m of superfined flyash2/ Kg, it is same by silane coupling agent Si-69 and terminal hydroxy liquid butadiene rubber
When be modified.The molecular weight of liquid cis butadiene is 3000, molecular weight distribution 2 or so.
Specific steps include：
(1) by the silane coupling agent Si-69 of 2% mass fraction it is evenly dispersed be added drop-wise in superfined flyash, slightly stir
After mixing 3 minutes, the terminal hydroxy liquid butadiene rubber of the number is added, stirs 5 minutes.
(2) aromatic naphtha is added in carbon black N330, be uniformly mixed and carefully ground 5 minutes.
(3) natural rubber national standard 1, zinc oxide and stearic acid, anti-aging agent, carbon black and aromatic hydrocarbons are successively added in mixer
Oil, liquid cis butadiene, it is silane coupler modified after flyash, accelerating agent, mixed at high speed 4min, at 90 DEG C complete to fine coal
Ash modification with mix.Sulphur, thin logical rear bottom sheet are added on a mill.
(4) the glue sample after being kneaded is vulcanized after parking 3 days, conditions of vulcanization 4.6MPa × 10min × 150 DEG C.
Embodiment 2
Its raw material forms (mass parts)：
The specific surface area 1000m of superfined flyash2/ Kg, it is same by silane coupling agent Si-69 and terminal hydroxy liquid butadiene rubber
When be modified.The molecular weight of liquid cis butadiene is 3000, molecular weight distribution 2 or so.
Specific steps include：
(1) by the silane coupling agent Si-69 of 2% mass fraction it is evenly dispersed be added drop-wise in superfined flyash, slightly stir
After mixing 3 minutes, the terminal hydroxy liquid butadiene rubber of the number is added, stirs 5 minutes.
(2) aromatic naphtha is added in carbon black N330, be uniformly mixed and carefully ground 5 minutes.
(3) natural rubber national standard 1, zinc oxide and stearic acid, anti-aging agent, carbon black and aromatic hydrocarbons are successively added in mixer
Oil, liquid cis butadiene, it is silane coupler modified after flyash, accelerating agent, mixed at high speed 2min, at 60 DEG C complete to fine coal
Ash modification with mix.Sulphur, thin logical rear bottom sheet are added on a mill.
(4) the glue sample after being kneaded is vulcanized after parking 2 days, conditions of vulcanization 4.6MPa × 10min × 150 DEG C.
Embodiment 3
Its raw material forms (mass parts)：
The specific surface area 700m of superfined flyash2/ Kg, it is same by silane coupling agent Si-69 and terminal hydroxy liquid butadiene rubber
When be modified.The molecular weight of liquid cis butadiene is 5000, molecular weight distribution 2 or so.
Specific steps include：
(1) by the silane coupling agent Si-69 of 2% mass fraction it is evenly dispersed be added drop-wise in superfined flyash, slightly stir
After mixing 3 minutes, the terminal hydroxy liquid butadiene rubber of the number is added, stirs 5 minutes.
(2) aromatic naphtha is added in carbon black N330, be uniformly mixed and carefully ground 5 minutes.
(3) natural rubber national standard 1, zinc oxide and stearic acid, anti-aging agent, carbon black and aromatic hydrocarbons are successively added in mixer
Oil, liquid cis butadiene, it is silane coupler modified after flyash, accelerating agent, mixed at high speed 3min, at 80 DEG C complete to fine coal
Ash modification with mix.Sulphur, thin logical rear bottom sheet are added on a mill.
(4) the glue sample after being kneaded is vulcanized after parking 2 days, conditions of vulcanization 4.6MPa × 9min × 150 DEG C.
Embodiment 4
Its raw material forms (mass parts)：
The specific surface area 700m of superfined flyash2/ Kg, it is same by silane coupling agent Si-69 and terminal hydroxy liquid butadiene rubber
When be modified.The molecular weight of liquid cis butadiene is 3000, molecular weight distribution 2 or so.
Specific steps include：
(1) by the silane coupling agent Si-69 of 2% mass fraction it is evenly dispersed be added drop-wise in superfined flyash, slightly stir
After mixing 3 minutes, the terminal hydroxy liquid butadiene rubber of the number is added, stirs 5 minutes.
(2) aromatic naphtha is added in carbon black N330, be uniformly mixed and carefully ground 5 minutes.
(3) natural rubber national standard 1, zinc oxide and stearic acid, anti-aging agent, carbon black and aromatic hydrocarbons are successively added in mixer
Oil, liquid cis butadiene, it is silane coupler modified after flyash, accelerating agent, mixed at high speed 3min, at 70 DEG C complete to fine coal
Ash modification with mix.Sulphur, thin logical rear bottom sheet are added on a mill.
(4) the glue sample after being kneaded is vulcanized after parking 1 day, conditions of vulcanization 4.6MPa × 10min × 150 DEG C.
Embodiment 5
Its raw material forms (mass parts)：
The specific surface area 700m of superfined flyash2/ Kg, it is same by silane coupling agent Si-69 and terminal hydroxy liquid butadiene rubber
When be modified.The molecular weight of liquid cis butadiene is 3000, molecular weight distribution 2 or so.
Specific steps include：
(1) by the silane coupling agent Si-69 of 2% mass fraction it is evenly dispersed be added drop-wise in superfined flyash, slightly stir
After mixing 3 minutes, the terminal hydroxy liquid butadiene rubber of the number is added, stirs 5 minutes.
(2) aromatic naphtha is added in carbon black N330, be uniformly mixed and carefully ground 5 minutes.
(3) natural rubber national standard 1, zinc oxide and stearic acid, anti-aging agent, carbon black and aromatic hydrocarbons are successively added in mixer
Oil, liquid cis butadiene, it is silane coupler modified after flyash, accelerating agent, mixed at high speed 2min, at 60 DEG C complete to fine coal
Ash modification with mix.Sulphur, thin logical rear bottom sheet are added on a mill.
(4) the glue sample after being kneaded is vulcanized after parking 3 days, conditions of vulcanization 4.6MPa × 11min × 150 DEG C.
Embodiment 6
Its raw material forms (mass parts)：
The specific surface area 700m of superfined flyash2/ Kg, it is same by silane coupling agent Si-69 and terminal hydroxy liquid butadiene rubber
When be modified.The molecular weight of liquid cis butadiene is 3000, molecular weight distribution 2 or so.
Specific steps include：
(1) by the silane coupling agent Si-69 of 2% mass fraction it is evenly dispersed be added drop-wise in superfined flyash, slightly stir
After mixing 3 minutes, the terminal hydroxy liquid butadiene rubber of the number is added, stirs 5 minutes.
(2) aromatic naphtha is added in carbon black N330, be uniformly mixed and carefully ground 5 minutes.
(3) natural rubber national standard 1, zinc oxide and stearic acid, anti-aging agent, carbon black and aromatic hydrocarbons are successively added in mixer
Oil, liquid cis butadiene, it is silane coupler modified after flyash, accelerating agent, mixed at high speed 2min, at 60 DEG C complete to fine coal
Ash modification with mix.Sulphur, thin logical rear bottom sheet are added on a mill.
(4) the glue sample after being kneaded is vulcanized after parking 3 days, conditions of vulcanization 4.6MPa × 10min × 150 DEG C.
Embodiment 7
Its raw material forms (mass parts)：
The specific surface area 700m of superfined flyash2/ Kg, it is same by silane coupling agent Si-69 and terminal hydroxy liquid butadiene rubber
When be modified.The molecular weight of liquid cis butadiene is 3000, molecular weight distribution 2 or so.
Specific steps include：
(1) by the silane coupling agent Si-69 of 2% mass fraction it is evenly dispersed be added drop-wise in superfined flyash, slightly stir
After mixing 3 minutes, the terminal hydroxy liquid butadiene rubber of the number is added, stirs 5 minutes.
(2) aromatic naphtha is added in carbon black N330, be uniformly mixed and carefully ground 5 minutes.
(3) natural rubber national standard 1, zinc oxide and stearic acid, anti-aging agent, carbon black and aromatic hydrocarbons are successively added in mixer
Oil, liquid cis butadiene, it is silane coupler modified after flyash, accelerating agent, mixed at high speed 4min, at 70 DEG C complete to fine coal
Ash modification with mix.Sulphur, thin logical rear bottom sheet are added on a mill.
(4) the glue sample after being kneaded is vulcanized after parking 1 day, conditions of vulcanization 4.6MPa × 10min × 150 DEG C.
Embodiment 8
Its raw material forms (mass parts)：
The specific surface area 700m of superfined flyash2/ Kg, it is same by silane coupling agent Si-69 and terminal hydroxy liquid butadiene rubber
When be modified.The molecular weight of liquid cis butadiene is 3000, molecular weight distribution 2 or so.
Specific steps include：
(1) by the silane coupling agent Si-69 of 2% mass fraction it is evenly dispersed be added drop-wise in superfined flyash, slightly stir
After mixing 3 minutes, the terminal hydroxy liquid butadiene rubber of the number is added, stirs 5 minutes.
(2) aromatic naphtha is added in carbon black N330, be uniformly mixed and carefully ground 5 minutes.
(3) natural rubber national standard 1, zinc oxide and stearic acid, anti-aging agent, carbon black and aromatic hydrocarbons are successively added in mixer
Oil, liquid cis butadiene, it is silane coupler modified after flyash, accelerating agent, mixed at high speed 2min, at 80 DEG C complete to fine coal
Ash modification with mix.Sulphur, thin logical rear bottom sheet are added on a mill.
(4) the glue sample after being kneaded is vulcanized after parking 1 day, conditions of vulcanization 4.6MPa × 10min × 150 DEG C.
The natural rubber of superfined flyash filling is prepared using above-mentioned all embodiments, using following methods to implementing
Example 1-8 makees the evaluation of physical mechanical property, such as following table：
1 tensile property is tested, and measuring condition is executed according to GB/T528-2009.
2 tear resistances are tested, and the condition of measurement is executed according to GB/T 529-2008.
3 hardness tests, measuring condition are executed according to GB/T 531.1-2008.
4 resiliences are tested, and measuring condition is executed according to GB/T 1681-2009.
5 abrasivities are tested, and measuring condition is executed according to GB/T 1689-1998.
6 density measurements, measuring condition are executed according to GB/T 533-2008.
Table 1
As seen from the above-described embodiment, the superfined flyash being modified through terminal hydroxy liquid butadiene rubber, superfined flyash is added
Additive amount be the 10~60% of natural rubber quality, the grain size of superfined flyash is 0.9~5 μm, specific surface area 700-
1000m2/ kg can be prepared with high tensile strength, tearing strength, the high natural rubber for stretching hardness.The present invention carries
There is the technical solution gone out it to protrude significant technique effect, can be good at the comprehensive performance of equilibrium cure rubber, basic to protect
The excellent performance for having held sulfurized natural rubber, is effectively reduced cost.
Claims (6)
1. a kind of natural rubber of superfined flyash filling, it is characterised in that：It is added liquid rubber modified along fourth through terminal hydroxy group
Superfined flyash, the additive amount of superfined flyash are the 10~60% of natural rubber quality；
The superfined flyash is that terminal hydroxy group is added by silane coupling agent Si-69 to form along fourth liquid rubber post-modification, is surpassed
Fine powdered coal, silane coupling agent Si-69 and terminal hydroxy group are 10~60 parts along the addition quality proportioning of fourth liquid rubber：0.6 part：2
~10 parts；
The Material synthesis of the following mass parts of natural rubber of the superfined flyash filling：
2. a kind of natural rubber of superfined flyash filling according to claim 1, it is characterised in that：The superfine powder
The grain size of coal ash is 0.9~5 μm, specific surface area 700-1000m2/kg。
3. a kind of natural rubber of superfined flyash filling according to claim 1, it is characterised in that：The natural rubber
Glue, number-average molecular weight are 60000~80000g/mol, and weight average molecular weight is 300000~340000g/mol.
4. a kind of natural rubber of superfined flyash filling according to claim 1, it is characterised in that：The terminal hydroxy group
Along fourth liquid rubber, hydroxyl value 0.65-0.7mmol/g, 3000~5000g/mol of number-average molecular weight, additive amount is natural rubber
The 2~10% of colloid amount.
5. a kind of preparation method of the natural rubber of superfined flyash filling, it is characterised in that comprise the steps of：
1) by silane coupling agent Si-69 it is evenly dispersed be added drop-wise in superfined flyash, gentle agitation is after 3 minutes, and end hydroxyl is added
Base stirs 5 minutes along fourth liquid rubber, obtains modified superfined flyash；
2) aromatic naphtha is added in carbon black, be uniformly mixed and carefully ground 5 minutes；
3) mixing of natural rubber, zinc oxide, stearic acid, anti-aging agent, carbon black and aromatic naphtha is successively sequentially added in mixer
Object, modification superfined flyash and accelerating agent, be kneaded uniform；Then sulphur, thin logical rear bottom sheet are added on a mill；
4) vulcanized after parking 1-3 days, the natural rubber of the superfined flyash filling is obtained after vulcanization；
The Material synthesis of the following mass parts of natural rubber of the superfined flyash filling：
6. a kind of preparation method of the natural rubber of superfined flyash filling according to claim 5, it is characterised in that：Institute
It is 4.6MPa × T90 × 150 DEG C to state conditions of vulcanization in step 4).
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| CN110305374A (en) * | 2019-07-22 | 2019-10-08 | 三角轮胎股份有限公司 | Low rolling hinders all-steel radial tyre tread rubber composition |
| CN110724314A (en) * | 2019-09-26 | 2020-01-24 | 芜湖集拓实心胎有限公司 | Engineering solid tyre intermediate adhesive added with fly ash |
Citations (3)
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| CN102775816A (en) * | 2012-08-14 | 2012-11-14 | 吉林大学 | Method for preparing rubber filler by modifying coal ash waste slag obtained after extracting aluminum through acid process |
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| CN101824168A (en) * | 2009-03-03 | 2010-09-08 | 柳州市圣诺科技有限公司 | Method for preparing modified natural rubber by replacing carbon black with activated pulverized fuel ash |
| CN102010535A (en) * | 2010-12-28 | 2011-04-13 | 济南高新区工业废弃物利用研发中心 | Pulverized coal ash rubber reinforcing agent |
| CN102775816A (en) * | 2012-08-14 | 2012-11-14 | 吉林大学 | Method for preparing rubber filler by modifying coal ash waste slag obtained after extracting aluminum through acid process |
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