WO2011094973A1

WO2011094973A1 - Rubber tyre extender oil for improving low hysteresis loss of rubber tyre and preparation method thereof

Info

Publication number: WO2011094973A1
Application number: PCT/CN2010/072321
Authority: WO
Inventors: 宫相勤; 徐伟; 史延明; 乔显荣; 刘顺光
Original assignee: Gong Xiangqin; Xu Wei; Shi Yanming; Qiao Xianrong; Liu Shunguang
Priority date: 2010-02-03
Filing date: 2010-04-29
Publication date: 2011-08-11
Also published as: CN102140190A; CN102140190B

Abstract

A rubber tyre extender oil for improving low hysteresis loss of the rubber tyre and preparation method thereof are disclosed. The rubber tyre extender oil is made of following materials: 30-60 weight parts of saturated isoparaffinic oil, 20-50 weight parts of LAL saturated hydrocarbon oil, 5-50 weight parts of naphthenic oil, and 0-35 weight parts of saturated aromatic oil. The preparation method of the rubber tyre extender oil comprises: all the material are blended and subjected to crosslinking reaction, and then the product with a bromine value less than 15 is obtained, finally it is cooled and discharged. The rubber tyre extender oil meets the demand of EU environmental protection, and has low hysteresis loss, a wide range of viscosity and rubber-friendly property and other physical properties. The rubber tyre extender oil has good low hysteresis loss property, so it can effectively improve the performance and quality of tyre when it is used in the production of tyre.

Description

Rubber tire filling oil for improving rubber tire low hysteresis loss and preparation method thereof

The present invention relates to a rubber tire filling oil, and more particularly to a rubber tire filling oil for improving the low hysteresis loss of a rubber tire and a preparation method thereof, and belongs to the production field of rubber tires. Background technique

From January 1, 2010, if the tires do not comply with the European Commission (Directive 2005/69/EC), they cannot enter the European market. Due to the high content of polycyclic aromatic hydrocarbons and polycyclic aromatic compounds, they are traditionally used. The main product of tire rubber-filled oils (ie, aromatic oils (DAE)) does not meet the requirements of the new regulations and therefore needs to be replaced with less toxic alternatives.

The European Union and the world have proposed alternatives to aromatic oils, and proposed to reduce tire rolling resistance by 50% in the next 10 years to achieve low carbon targets. At present, tire formulations urgently require a new material operating oil with low lag and loss of environmental protection. Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a rubber tire filling oil which is less toxic and can effectively improve the low hysteresis loss of rubber tires.

The technical problem to be solved by the present invention is achieved by the following technical solutions: A rubber tire filling oil which improves the low hysteresis loss of a rubber tire, and comprises the following raw materials in the following parts by weight:

30-60 parts of saturated isoparaffin oil, 20-50 parts of LAL saturated hydrocarbon oil, 5-50 parts of naphthenic oil, 0-35 parts of saturated aromatic oil;

Preferably, the parts by weight of each raw material are: 40-60 parts of saturated isomeric hydrocarbon oil, 20-30 parts of LAL saturated hydrocarbon oil, 8-12 parts of naphthenic oil, and 2-28 parts of saturated aromatic oil; The saturated isomeric terpene hydrocarbon oil is obtained by treating the isomeric terpene hydrocarbon by de-heterocyclic refining treatment; the isoparaffin is derived from the refinery vacuum distillate oil (reduced pressure 2-3 line), isoparaffin The hydrocarbon composition is: linear linear n-alkane accounts for 20%, and branched isomeric alkanes accounts for 80%.

The method for processing the deheterocyclic refining treatment comprises: refining: adsorbing and separating the isoparaffin with white clay; hydrotreating: hydrotreating the purified isoparaffin, and the condition of the hydrotreating is preferably : In the presence of metallic nickel, the temperature is maintained at 180-300 ° C, the pressure is 0.8-1 MPa, and the time is 10-20 hours.

The preparation method of the LAL saturated hydrocarbon oil comprises:

(1) Weigh each component in the following parts by weight: styrene 40-5 parts, 茚10-25 parts, cyclopentadiene 20-30 parts, methyl styrene 0~5 parts, bis-cation aluminum trichloride 0.05-0.15 parts, adjuvant 100~150 parts; wherein the auxiliary agent may be toluene or xylene;

(2) mixing the raw materials described in the step (1) for bis-cation catalytic low temperature reaction;

(3) The product obtained in the step (2) is allowed to stand for stratification, and the lower layer liquid is taken off to remove the residual fraction to obtain a paste;

(4) Weigh each component according to the following weight: 40-50 parts of the cream obtained in the step (3), 35-45 parts of the isomeric hydrocarbon, 10-20 parts of the aromatic oil; The hydrotreating treatment is carried out; wherein, the hydrotreating treatment comprises: maintaining the temperature in the presence of metallic nickel at a temperature of 180-300 ° C, a pressure of 0.8-1 MPa, and hydrotreating for 10-20 hours.

The "isoparaffin" of the present invention is derived from a refinery vacuum distillate (reduced pressure line of 234:), and the composition of the isomeric hydrazine is: linear linear n-alkane 20%, branched isoparaffin 80%

The "aromatic hydrocarbon oil" belongs to a polycyclic aromatic hydrocarbon mixture, and the total composition thereof satisfies the requirements of the present invention as long as it contains 30 to 45 wt% of an aromatic hydrocarbon, and the aromatic hydrocarbon mainly includes cyclopentadiene-1.3. dicyclopentadiene. Ingredients such as styrene.

The saturated aromatic hydrocarbon oil is obtained by subjecting the aromatic hydrocarbon oil to deheterocyclic and saturated refining treatment; and the aromatic hydrocarbon oil is subjected to heavy hydrosaturation treatment to obtain a saturated aromatic hydrocarbon oil, and the hydrogenation treatment condition is preferably: in the presence of metallic nickel The hydrogenation treatment is carried out at a temperature of 180 to 300 ° C and a pressure of 0.8 to 1 MPa, and the treatment time is preferably 10 to 20 hours.

The cycloalkane may be a compound of the formula C _n H ₂ J in a cyclic structure, which is a five-carbon ring and a six-carbon ring, and the main body thereof is not a carbon chain but a carbocyclic ring, and may be, for example, cyclopentane or cyclohexane. Or dimethylcyclohexane and the like. The boiling point of each raw material used in the present invention preferably ranges from 200 ° C to 360 ° C.

Another technical problem to be solved by the present invention is to provide a method of preparing the rubber tire filling oil which improves the low hysteresis loss of the rubber tire described above.

Another technical problem to be solved by the present invention is achieved by the following technical solutions:

A method of preparing the above rubber tire filling oil for improving low hysteresis loss of a rubber tire, comprising:

(1) weighing each raw material by the weight portion;

(2) After mixing the raw materials, a cross-linking reaction is carried out to obtain a product having a bromine number of 15 or less, and the temperature is discharged.

Wherein, the crosslinking reaction is preferably carried out at a temperature of 50 to 400 ° C; more preferably, the crosslinking reaction is carried out under the following conditions: at a temperature of 220 to 300 ° C, stirring at a pressure of 1.5 to 2 MPa for 2 to 5 hours; wherein, while stirring, the C0 ₂ shielding gas is continuously charged (the amount of C0 ₂ added is preferably 2 kg of C0 ₂ gas per hour).

The rubber tire filling oil of the invention meets the environmental protection requirements of the European Union in environmental protection, has low hysteresis loss characteristics and wide viscosity, affinity and other physical properties. The rubber tire filling oil of the invention is used for producing tires, and has good low hysteresis loss. Features, can effectively improve the performance and quality of the tire. detailed description

The invention will be further described in conjunction with the specific embodiments, and the advantages and features of the invention will become more apparent. However, these examples are merely exemplary and do not impose any limitation on the scope of the invention. It will be understood by those skilled in the art that the details and the details of the invention may be modified or substituted without departing from the spirit and scope of the invention. 1. Preparation of each raw material used in the present invention

1. Preparation of saturated isoparaffin oil: Raw materials and sources: isomeric terpene hydrocarbons, from refinery vacuum distillate oil (reduced pressure 234 line:), isoparaffin composition: linear normal n-alkane accounted for 20%, branched isomers accounted for 80%.

The process for removing the heterocyclic refining treatment comprises: refining: adsorbing and isolating the isoparaffin with white clay; hydrotreating: hydrotreating the purified isoparaffin under the following conditions: in the presence of metallic nickel, temperature Maintain 180-300 ° C, pressure of 0.8-1 MPa, and handle for 10-20 hours.

2. Preparation of LAL saturated hydrocarbon oil:

1. Weigh each component according to the following weight: styrene fraction 40kg, bismuth fraction 25kg, cyclopentadiene fraction 30kg, methyl styrene fraction 5kg, bis-cationic aluminum trichloride (purchased from Qingdao Haijia Auxiliary Co., Ltd. Resin Research Institute, trade name "double-cationic aluminum trichloride") 0.1kg;

2. After mixing the above components, 100 kg of toluene is used as an auxiliary agent, and under the condition of being charged with C0 ₂ gas, the reaction is carried out at a temperature of 15 ° C for 30 hours;

3. The product obtained in step 2 is added to 2 kg of methanol at a temperature of 15 ° C, and stirred at 35 ° C for 3 hours at a constant temperature;

4. The product obtained in the step 3 is refined and layered at room temperature for 12 hours, and the lower layer liquid is taken off at 260 ° C to obtain a viscous liquid flowing at a temperature of 40-50 ° C.

5. Weigh each component according to the following weight: 45 kg of viscous liquid prepared in step 4, 40 kg of isomerized terpene hydrocarbon, 15 kg of aromatic hydrocarbon oil; mixing the above components together at 300 ° C for mixing reaction 4 After the hour, the hydrotreating treatment is carried out: in the presence of metallic nickel, the temperature is maintained at 180-300 ° C, the pressure is 0.8-1 MPa, and the treatment is carried out for 10-20 hours.

3. Preparation of saturated aromatic oil:

Raw material: an aromatic hydrocarbon oil, belonging to a polycyclic aromatic hydrocarbon mixture, the total composition of which contains 30-45 wt% of an aromatic hydrocarbon, wherein the aromatic hydrocarbon includes cyclopentadiene-1.3. dicyclopentadiene, methyl styrene, etc.;

The aromatic hydrocarbon oil is subjected to heavy hydrosaturation treatment to obtain a saturated aromatic hydrocarbon oil, which is hydrogenated. The conditions are as follows: Hydrogenation is carried out in the presence of metallic nickel at a temperature of 180-300 ° C and a pressure of 0.8-1 MPa for a treatment time of 10-20 hours.

4. Cyclic hydrocarbon oil: It is a cyclic structure of the formula: ^11 _{211. It} is divided into a five-carbon ring and a six-carbon ring. The main component is not a carbon chain but a carbocyclic ring. The main component is cyclopentamidine.垸 or / and dimethylcyclohexane and the like. Example 1

Weigh each raw material (unit: kg) by weight: saturated isomeric hydrocarbon oil 40, LAL saturated hydrocarbon oil 20, cyclononane oil 12, saturated aromatic oil 28;

Stir at a pressure of 1.5 MPa for 5 hours at a temperature of 300 °C. When stirring, the C0 ₂ shielding gas is continuously charged. After the bromine number is within 15, the temperature is discharged and the stable saturated oil is obtained.

Example 2

Weigh each raw material (unit: kg) according to the following weight: saturated isomeric hydrocarbon oil 60, LAL saturated hydrocarbon oil 30, cyclic hydrocarbon oil 8, saturated aromatic oil 2;

Stir at a pressure of 2 MPa for 2 hours at a temperature of 220 °C. The C0 ₂ shielding gas is continuously charged while stirring. After measuring the bromine number within 15, the temperature is discharged and the stable saturated oil is obtained.

P Example 3

Weigh each raw material (unit: kg) by weight: saturated isomeric terpene hydrocarbon 30, LAL saturated hydrocarbon oil 20, naphthenic oil 5;

The mixture was stirred at a temperature of 280 ° C for 3 hours under a pressure of 1.8 MPa. The C0 ₂ shielding gas is continuously charged while stirring. After measuring the bromine number within 15, the temperature is lowered and the stable saturated oil is obtained.

Example 4

Weigh each raw material (unit: kg) by weight: saturated isomeric hydrocarbon oil 60, LAL saturated hydrocarbon oil 50, naphthenic oil 50, saturated aromatic oil 35;

Stir at a pressure of 2 MPa for 4 hours at a temperature of 250 °C. Constantly charging while stirring Into C0 ₂ protective gas, after measuring the bromine value within 15, cool down the discharge, obtain stable saturated oil

Test Example 1 Environmental test results of rubber tire filling oil of the present invention

Test object: The rubber tire filled oil prepared in Examples 1-4;

Testing standards: 2005/69/EC; See Table 1 for testing requirements.

Table 1 Test requirements

Detection methods and results: Detection methods: solvent extraction and quantitative gas chromatography mass spectrometry selective detection (GC-MS); detection results are shown in Table 2.

All the tested objects passed the environmental testing items set by the testing standards; indicating that the rubber tire filling oil of the present invention meets the EU environmental protection requirements in environmental protection. Table 2

Note: "mg/kg" means milligrams per kilogram

"ND" means <0.2 mg/kg

Test Example 2 The rubber tire filling oil of the present invention was used in a tire sidewall formulation and physical property analysis (Table 3) Test sample: the rubber tire filling oil prepared in Example 1-4;

Control sample: Ordinary aromatic oil (purchased from Jinan Refinery, Shandong:).

Test method: test the test sample in the tire sidewall formulation and physical properties according to the formula described in Table 3;

Test results: See Table 4.

table 3

Rubber compound performance record

No.: YF 09 214#-215# Purpose: To test the performance of test samples and test samples in the side rubber. Test sample delivery time: 2009.6.18 Vulcanization conditions: 151 °C x20'30'40'50'60'

Test time: 2009.8.28 Test rubber name (or number)

214# 215#

Test item Control sample formulation Test sample formulation

Aromatic oils Environmentally friendly oils prepared in Examples 1-4 Mooney viscosity ML(1+4) 100 42.4 42.6

127 degrees Mooney scorch T5 points 22.4 19.7

127 degrees Mooney scorch T35 points 24.3 21.2

Self-adhesiveness of unvulcanized rubber kn/m 1.0 1.1

TS 1 4.86 4.60

TS2 5.29 4.98

MDR2000 T10 4.83 4.58

151 C T30 5.61 5.25

Rheometer T50 6.41 6.00

T60 6.97 6.52 T90 10.52 9.72

T95 12.15 11.16

ML 1.70 1.64

MH 11.40 11.16 Vulcanization conditions: 151 °C x20'

Tensile strength MPa 17.5 17.1 Elongation at break % 795 763

100% fixed extension MPa 1.5 1.6

300% Fixed MPa 6.7 7.1 Permanent deformation % 12 16 Hardness (Shore A) 54 52 Tear strength kn/m 42 42 Resilience (room temperature 24°C)% 50 52 Vulcanization conditions: 151 °C x30'

Tensile strength MPa 16.7 16.5 Elongation at break % 817 718

100% fixed extension MPa 1.4 1.6

300% Fixed MPa 6.2 7.1 Permanent deformation % 16 12 Hardness (Shore K) 54 53 Tear strength kn/m 43 39 Resilience (room temperature 23 °C)% 49 52 Adhesive stripping with Q870 after vulcanization 36.6 29.8

100°C x72h 5000 times Level 1 Level 1 After aging, 7500 times Level 1 Level 1

11250 times Level 1 Level 1 Curved order level 16875 times Level 1 Level 1 Others 25312 times Level 1 Level 1

37968 times Level 1 Level 1

56952 times Level 1 Level 1

85428 times Level 1 Level 1

128142 times Level 1 Level 1

192213 times Level 1 Level 1

288,320 times, level 3, level 1

300,000 times, level 3, level 2

100°C x72h Strength MPa 10.8 11.2 Hot air aging Elongation % 322 324

100% fixed 2.5 2.4

300% fixed extension 9.8 10.1 Permanent deformation % 8 8 Hardness (Shore A) 59 58 Tearing kn/m 32 27 Elasticity % 49 52 Vulcanization conditions: 151 °C x40'

Tensile strength MPa 17.3 16.3

Elongation at break % 881 646

100% fixed extension MPa 1.3 1.5

300% fixed extension MPa 6.1 6.9

Permanent deformation % 16 12

Hardness (Shore A) 52 52

Tear strength kn/m 41 40

Resilience (room temperature 23 ° C)% 49 51

Vulcanization conditions: 151 °C x50'

Tensile strength MPa 17.1 15.9

Elongation at break % 890 682

100% fixed extension MPa 1.3 1.4

300% fixed extension MPa 5.8 6.6

Permanent deformation % 20 10

Hardness (Shore K) 52 51

Tear strength kn/m 39 38

Resilience (room temperature 23 ° C)% 47 49

Vulcanization conditions: 15 ΓΟ 60'

Tensile strength MPa 16.5 15.9

Elongation at break % 862 683

100% fixed extension MPa 1.3 1.3

300% fixed extension MPa 5.8 6.3

Permanent deformation % 16 12

Hardness (Shore) 52 51

Tear strength kn/m 37 38

Resilience (room temperature 23 °C) % 46 48

RPA2000 Rubber Processing Tester:

1.0 CPM 0.100 0.085

2.0 CPM 0.102 0.089

Vulcanized rubber

5.0 CPM 0.110 0.096

RPA2000

10.0 CPM 0.117 0.103

Dynamic heat generation

20.0 CPM 0.123 0.108

Frequency sweep

50.0 CPM 0.132 0.116

tanS value

100.0 CPM 0.140 0.123

60 °C

200.0 CPM 0.144 0.128

0.50 degrees

500.0 CPM 0.151 0.133

1000.0 CPM 0.154 0.137

Test Example 3 The use of the rubber tire filling oil of the present invention in the tire crown formulation and physical property analysis

Test sample: rubber tire filling oil prepared in Examples 1-4; Control sample 1: common aromatic oil; (purchased from Jinan Refinery, Shandong)

Control sample 2: Hansheng 500TDAE environmentally friendly oil; (composition: aromatic oil; purchase Source: Hansheng company in China)

Test method: test the test sample in the tire crown formulation and physical properties according to the formula described in Table 5;

Test results: See Table 6.

table 5

Rubber compound performance record

MDR2000 T30 5.47 6.38 6.40 160 °C T50 6.61 7.58 7.65 Rheometer T60 7.33 8.32 8.41

T90 11.40 12.59 12.79

T95 13.24 14.52 14.74

ML 1.73 1.61 1.80

MH 13.25 13.55 13.14 Vulcanization conditions: 160 ° C x lO'

Tensile strength MPa 22.8 20.9 21.5 elongation at break % 790 559 729

100% fixed extension MPa 1.8 2.1 1.8

200% fixed extension MPa 4.9 5.9 4.7

300% Fixed MPa 9.4 11.1 9.0 Hardness (Shore K) 61 61 61 Tear strength kn/m 53 50 52 Resilience (Room temperature 24°C % 34 36 33 Vulcanization conditions: 160°C x l5'

Tensile strength MPa 22.0 20.9 20.3 elongation at break % 662 464 576

100% fixed extension MPa 1.9 2.1 1.9

200% fixed extension MPa 5.4 5.9 5.5

300% Fixed MPa 10.3 11.1 10.2 Hardness (Shore A) 62 61 61 Tear strength kn/m 51 51 51 Resilience (room temperature 24°C)% 33 36 33 Vulcanization conditions: 160°C x20'

Tensile strength MPa 21.7 19.9 20.7 Elongation at break % 614 448 573

100% fixed extension MPa 1.9 2.3 2.0

200% fixed extension MPa 5.3 6.7 5.8

300% Fixed MPa 10.0 12.4 10.7 Hardness (Shore K) 62 62 61 Specific gravity 1.148 1.134 1.140 Tear strength kn/m 52 52 52 Resilience (room temperature 23 °C)% 32 35 32

DIN wear loss g 0.118 0.108 0.124 wear DIN wear index 109.1 117.7 103.1

5000-37968 times no cracks no cracks no cracks curved 56952-85428 times 1 level 1 no cracks 128142-288320 times 6 levels 1 level 6 levels 300,000 times Level 2

Strength MPa 19.1 18.4 19.2 Elongation % 359 299 361 100°C 100% anchoring 3.8 4.4 3.9 x72h 200% setting 10.2 11.6 10.1 Hot air 300% setting 16.1 ― 16.1 Ageing hardness (Shore A) 71 71 69 Tearing kn/m 48 45 47 Elasticity % 35 38 36 Vulcanization conditions: 160 ° C x 25'

Tensile strength MPa 22.9 21.0 21.4 Elongation at break % 653 440 627

100% fixed extension MPa 2.0 2.2 1.9

200% fixed extension MPa 5.7 6.8 5.6

300% Fixed MPa 10.5 12.6 10.6 Hardness (Shore A) 62 62 62 Tear strength kn/m 51 49 52 Resilience (room temperature 23 °C)% 34 35 32

RPA2000 Rubber Moon Processing Tester:

Vulcanized rubber 0.1 degree strain 0.159 0.153 0.168 RPA2000 0.2 degree strain 0.176 0.158 0.188 tan8 value 0.5 degree strain 0.188 0.165 0.191 (dynamic heat generation) 1.0 degree strain 0.177 0.158 0.183 60 degree 2.0 degree strain 0.184 0.166 0.189 200CPM 3.0 degree strain 0.192 0.174 0.198

1.0 CPM 0.155 0.117 0.143

2.0 CPM 0.149 0.117 0.141 vulcanizate

5.0 CPM 0.150 0.123 0.146 RPA2000

10.0 CPM 0.154 0.129 0.152 Dynamic heat generation

20.0 CPM 0.158 0.132 0.155 frequency sweep

50.0 CPM 0.165 0.141 0.161 tanS value

100.0 CPM 0.174 0.148 0.170 60 "C

200.0 CPM 0.182 0.157 0.177 0.50 degrees

500.0 CPM 0.198 0.171 0.193

1000.0 CPM 0.207 0.182 0.205

1.0 CPM 0.184 0.152 0.177 vulcanizate

2.0 CPM 0.185 0.155 0.174 RPA2000

5.0 CPM 0.197 0.164 0.185 180*2h

10.0 CPM 0.208 0.175 0.195 After heat aging

20.0 CPM 0.217 0.183 0.202 tanS value

50.0 CPM 0.229 0.195 0.213 (Dynamic

100.0 CPM 0.240 0.205 0.224 heat generation)

200.0 CPM 0.250 0.213 0.233 60 degrees

500.0 CPM 0.261 0.227 0.245 0.50 degrees

1000.0 CPM 0.266 0.234 0.250 Unvulcanized rubber 1.00 degree strain 0.711 0.656 0.682 RPA2000 2.00 degree strain 0.770 0.732 0.739 tanS value 5.00 degree strain 0.995 0.988 0.965

(Processing 10.00 degree strain 1.353 1.360 1.323 performance) 20.00 degree strain 2.017 2.027 1.916

110 degrees 30.00 degrees strain 2.397 2.405 2.257

20.CPM 50.00 degree strain 3.284 3.306 3.018

60.00 degree strain 3.799 3.845 3.473

Claims

Rights request

1. A rubber tire filling oil for improving the low hysteresis loss of rubber tires, comprising the following raw materials in the following parts by weight: 30-60 parts of saturated isoparaffin oil, 20-50 parts of LAL saturated hydrocarbon oil, and cycloalkane oil 5 - 50 parts and saturated aromatic oil 0 - 35 parts.

2. The rubber tire filling oil according to claim 1, wherein the weight fraction of each raw material is: 40 to 60 parts of a saturated isoparaffin oil, 20 to 30 parts of a saturated hydrocarbon oil of LAL, and 8 to 10 parts of a cyclic hydrocarbon oil. 12 parts, 2-28 parts of saturated aromatic oil.

The rubber tire filling oil according to claim 1 or 2, wherein the method for preparing the saturated isomeric terpene hydrocarbon comprises: subjecting the isomeric terpene hydrocarbon to heavy hydrogenation.

The rubber tire filling oil according to claim 3, wherein the composition of the isomeric terpene hydrocarbon is: linear normal oxime accounts for 20%, and branched isomeric hexane accounts for 80%; The severe hydrogenation methods include: (1) Refining: adsorption and separation of the isomeric terpene hydrocarbons with white clay; (2) Hydrotreating: Hydrogenation of the purified isomeric hydrocarbons, the conditions of the hydrogenation treatment are: In the presence of metallic nickel, the temperature is maintained at 180-30 CTC, the pressure is 0.8-1 MPa, and the hydrogenation time is 10-20 hours.

The rubber tire filling oil according to claim 1 or 2, wherein the preparation method of the LAL saturated hydrocarbon oil comprises:

(1) Weigh each raw material according to the following parts by weight: 40^5 parts of styrene, 10-25 parts of hydrazine, 20-30 parts of cyclopentadiene, 0-5 parts of methyl styrene, bis-cationic aluminum chloride 0.05 -0.15 parts, adjuvant 100-150 parts;

(2) mixing the raw materials together to carry out a dication-catalyzed low-temperature reaction;

(3) The product obtained in the step (2) is allowed to stand for stratification, and the lower layer liquid is taken to remove the residual fraction to obtain a paste;

(4) Weigh each component according to the following weight: 40-50 parts of the cream obtained in the step (3), 35-45 parts of the isomeric hydrocarbon, 10-20 parts of the aromatic oil; Add hydrotreating to obtain.

The rubber tire filling oil according to claim 5, wherein: the auxiliary agent comprises toluene or xylene; and the hydrotreating treatment comprises: maintaining the temperature at 180-300 ° C in the presence of metallic nickel , the pressure is 0.8-1 MPa, and the hydrogenation time is 10-20 hour.

The rubber tire filling oil according to claim 1 or 2, wherein the method for preparing the saturated aromatic hydrocarbon oil comprises: subjecting the aromatic hydrocarbon oil to heavy hydrogenation.

The rubber tire filling oil according to claim 7, wherein: the aromatic hydrocarbon oil is a polycyclic aromatic hydrocarbon mixture, and the total composition thereof mainly contains 30 to 45 wt% of an aromatic hydrocarbon; and the heavy hydrogenation method includes : Hydrogenation is carried out in the presence of metallic nickel at a temperature of 180-300 ° C and a pressure of 0.8-1 MPa. The hydrogenation time is 10-20 hours.

The rubber tire filling oil according to claim 1 or 2, wherein the naphthenic oil is a cyclic structure of the formula C _n H _2n , which contains a five-carbon ring and a six-carbon ring, and a main body It is a carbon ring structure.

The rubber tire filling oil according to claim 9, wherein the naphthenic oil comprises: cyclopentanyl, cyclohexanyl or / and dimethylcyclohexane.

A method of preparing a rubber tire filling oil according to claim 1 or 2, comprising:

(1) weighing each raw material by the weight portion;

The method according to claim 11, wherein the crosslinking reaction is carried out at a temperature of from 50 to 400 °C.

The method according to claim 12, wherein the crosslinking reaction comprises: stirring at a temperature of 220 to 300 ° C and a pressure of 1.5 to 2 MPa for 2 to 5 hours; The protective gas C0 ₂ is continuously charged while stirring.

Use of the rubber tire filling oil according to claim 1 or 2 in the preparation of a tire.