WO2015109789A1 - Rubber composition containing organosilane coupling agent and carbon black and preparation method therefor - Google Patents

Abstract

The present invention relates to a rubber composition and a process method therefor. The rubber composition comprises: 100 parts by weight of a rubber, 5 - 120 parts by weight of carbon black, 0.5 - 12 parts by weight of an organosilane coupling agent, and a certain number of parts by weight of an activator, an anti-aging agent, sulphur and a vulcanizing accelerator. The steps of the process method for preparing such a rubber composition comprise: compounding the rubber, carbon black, and the organosilane coupling agent into a master batch under a certain compounding condition, and then adding one or more rubber auxiliaries to form the rubber composition. The present invention can be employed in tyres for improving the abrasion resistance and reducing the rolling resistance.

Description

 Rubber composition containing organic silane coupling agent and carbon black and preparation method thereof

3⁄4 ^ field

 The invention relates to the field of rubber, in particular to the field of tire manufacture.

Background έ ^

 One of the basic characteristics of rubber is: In the process of use, energy loss occurs due to the hysteresis loss of the rubber compound, and at the same time, it is converted into heat, and heat generation reduces the service life of the tire. Under the premise of not losing the basic properties of the rubber material such as wear resistance and physical properties, reducing the heat generation of the rubber compound will increase the use of the tire.

 The patent "Rubber Composition" (publication number CN1199412A) discloses the mixing of natural rubber with silica/organosilane coupling agent to make the composition low in heat generation and wear resistance; Patent "Rubber Composition" (publication number CN1322223A) A diolefin polymer containing white carbon black is disclosed for reducing the rolling resistance of the tire; the patent "rubber composition and the pneumatic tire prepared from the rubber composition" (publication number CN1205016A), the release of natural rubber Or a diene rubber with white carbon black and a specific silane coupling agent to prepare a low heat generating, low rolling resistance tire. The above-mentioned patents all use a polymer mixed with a silica/silane coupling agent, and the rubber composition prepared by the method is inferior in abrasion resistance, particularly in truck tires. The rubber composition of the present invention introduces an organosilane coupling agent to make the carbon black interact more strongly with the diene polymer, the wear resistance is improved, the heat generation is lowered, and the rolling resistance of the tire is lowered.

 Patent "Use of surface treated carbon black to reduce compound lag and tire rolling resistance in elastomers and to improve wet skid resistance" (Publication No. CN102575082A) discloses the interaction between surface treated carbon black and polymer, The carbon black needs to be treated with an oxidizing agent, preferably a diamine compound. Such a treatment method has a residual or unreacted oxidizing agent present in the rubber composition formulation, affecting the vulcanization time of the rubber mixture, especially shortening the scorch time and affecting the processing safety. Sex. The use of the organosilane coupling agent of the invention has no effect on the vulcanization characteristics of the formulation, and the surface treatment of the carbon black is directly completed in the process of processing, and it is not necessary to separately treat the carbon black, which is more convenient for processing.

The patent "A Process for Increasing the Dispersion of Silica Black" (Application No. CN101786298A) discloses a process for preparing a masterbatch using a polymer and a silica, an organosilane coupling agent, and does not involve how to improve carbon black and polymer. The process of interaction. By using the mixing process of the invention, an organosilane coupling agent is introduced into the rubber composition, thereby enhancing the interaction between the polymer and the carbon black, and improving the performance of the rubber compound. Summary of the invention

 In view of the problems of the prior art, the present invention is intended to provide a rubber composition reinforced with carbon black and a method for producing the same, which has the advantages of high wear resistance, low heat build-up, and low rolling resistance.

 The rubber composition contains a diene polymer, carbon black, a certain proportion of an organosilane coupling agent and a corresponding compounding agent, and the polymer is pre-mixed with a carbon black and an organosilane coupling agent to form a masterbatch. The interaction with carbon black, after vulcanization, can improve the wear resistance of the rubber compound, reduce the heat generation performance of the rubber compound, and improve the dynamic performance of the rubber compound. When the rubber composition and the processing method according to the invention are applied to a tire casing, the wear resistance of the tire can be improved and the rolling resistance can be reduced.

 The process advantages of the invention are as follows: Under the action of the organosilane coupling agent, the effect of the carbon black particles is reduced during the mixing process, the effect between the carbon black and the polymer is increased, and the heat generation of the rubber compound is reduced. The present invention relates to a rubber composition comprising: a diene-based polymer, a carbon black reinforcing agent having a STSA specific surface area of from 0 to 200 m7g, and a til silane coupling agent in an amount depending on the amount of carbon black.

 The organosilane coupling agent has the following formula:

( _n - ( O ) _3- „Si- (Alk) _m - ( Ar) _p ) _q (A) (I )

R _n '( O) _3-n Si- (Alk) (Π)

 or! ^ ! ^^-^ ^ ) (m)

Where, when q = 1, A is -SCN, -SH, -CI, -NH ₂ ;

When q=2, A is -S _x -;

 R and R' are a branched or linear alkyl or phenol group having from 1 to 4 carbon atoms, and R and R' may be the same or different;

 n is 0, 1 or 2;

 Alk is a linear or branched hydrocarbon group having 1 to 1 carbon atom;

 Alkenyl is a linear or branched alkenyl group containing from 1 to 1 carbon atom;

 m is 0 or 1;

 Ar is an aryl group having 6 to 12 carbon atoms;

p is 0 or 1, p and n cannot be 0 at the same time; x is 2 to 8;

 The most commonly used ones are bis(triethoxypropylsilane) tetrasulfide and disulfide, 3-thiocyanopropyl-triethoxysilane, γ-mercapto-trimethoxysilane.

 The amount of the organosilane is changed according to the amount of the carbon black. The test results show that the amount of the organosilane coupling agent is 0.5% by weight of the amount of the carbon black (the range of kt% is preferred).

 The present invention further relates to the following embodiments: A rubber composition having low hysteresis loss and high abrasion resistance, comprising: (A) 100 parts by weight of rubber;

(B) 5-120 parts by weight of carbon black, preferably 20-90 parts by weight;

(C) 0.5-12 parts by weight of an organosilane coupling agent, the parts by weight being based on the content of the pure organosilane coupling agent; the rubber composition further comprising an activator, an antioxidant, sulfur, a vulcanization accelerator, and optionally other rubber aids Agent, the process shown is as follows:

 Masterbatch process:

 The rubber is mixed with carbon black and an organosilane coupling agent, and the kneading temperature is in the range of 130-16 CTC for at least 1-5 minutes;

 Final rubber mixing process:

 The carbon black masterbatch, the antioxidant, the active agent, the accelerator, and the chemical agent are kneaded in a ratio of the composition to prepare a rubber composition, and the final rubber mixing process is one or more segments;

 The rubber composition according to the above, wherein the rubber comprises one or more of natural rubber, synthetic polyisoprene rubber, cis-butyl rubber, styrene-butadiene rubber, and other diene-containing unit-containing polymers;

The rubber composition according to the above, wherein the carbon black STSA has a specific surface area of 10 to 200 m ² /g _{; and} the rubber composition according to the above, wherein the organosilane coupling agent has one of the following formulae or Multiple:

( R _n - ( RO ) _3-n Si- (Alk) _m - (Ar) _p )q (A) (I) R _n ' (RO) _3-n Si- (Alk) (Π)

Or ^! ^^^- (m) where, when q = l, A is -SCN, -SH, -CI, -NH ₂ ;

When q=2, A is -S _x -;

 R and R' are a branched or linear alkyl or phenol group having from 1 to 4 carbon atoms, and R and R' may be the same or different;

 n is 0, 1 or 2;

 Alk is a linear or branched hydrocarbon group having 1 to 1 carbon atom;

 Alk^l is a linear or branched alkenyl group having 1 to 1 carbon atom;

 m is 0 or 1;

 Ar is an aryl group having 6 to 12 carbon atoms;

 p is 0 or 1, p and n cannot be 0 at the same time;

 X is 2 to 8;

 The most commonly used ones are bis(triethoxypropylsilane) tetrasulfide and disulfide, 3-thiocyanopropyl-triethoxysilane, gamma-mercapto-trimethoxysilane; The rubber composition, wherein the silicone compound coupling agent is used in an amount of 0.5% by weight to 10% by weight, preferably 1% by weight to 8%, more preferably 2% by weight to 5% by weight based on the amount of the carbon black; The activator is one or more of a metal oxide and a fatty acid combination and a fatty acid metal soap salt, and the metal oxide is one or more of zinc oxide, magnesium oxide, etc., and the fatty acid metal soap salt is One or more of zinc stearate, zinc borate, etc.; wherein the antioxidant includes an amine antioxidant, a quinoline anti-aging agent, a benzimidazole anti-aging agent, a physical protective wax; wherein the accelerator includes, but is not limited to, a sulfenamide a promoter, a thiazole-based agent, a granule leg, a steroid-based accelerator, or a combination thereof, and the vulcanizing agent includes, but is not limited to, sulfur, insoluble sulfur, oil-saturated sulfur, sulfur donor or a combination thereof; Made of rubber according to the above rubber composition .

The method for measuring the binding rubber content of the 3⁄4⁄4t adhesive composition of the present invention is as follows: Weighing a certain weight of unvulcanized rubber sample Soak the unvulcanized rubber in the organic solvent (the preferred toluene solution) for 3 days; remove the sample, replace the immersion: permeable, and then immerse the sample in the organic solution for three days; then wash the sample dry and dry the amount. Calculate the bound gum content according to the theoretical calculation formula.

105

W—sample weight

 Wfg - carbon black and combined glue weight

 Mf—the weight of the filler in the rubber compound

 Mp—the weight of the rubber in the rubber compound

 DRAWINGS

 Figure 1 Example 2 and Comparative Example 2 DMA 3⁄4S scan curve

 With force

 The invention is further described below by way of examples, but the scope of the invention is not limited by the examples.

 Shed instrument Table 1 Equipment for rubber sample preparation

 120

硬度 (ShoreA) GB/T 531.1-2008 硬度计（邵 A) LX-A 上海六菱仪器厂 Table 2 Test methods and instruments for physical properties of vulcanizates

Hardness (ShoreA) GB/T 531.1-2008 Hardness Tester (Shao A) LX-A Shanghai Liuling Instrument Factory

 Serving the lunar surface

 Stretching (MPa) GB T 528-2009 A1-3000 High-speed rail testing equipment company

 Inspection machine

 Serving the lunar surface

 Elongation at break ( ) GB T 528-2009 A1-3000 High-speed rail testing equipment company

 Inspection machine

 Rebound! "Health (%) GB/T 1681-2009 Resilience Tester GT-7042-RE High-speed Rail Testing Equipment Company Compressed Heat Generation GB/T 1687-1993 Compressed Heat Generation 3⁄43⁄4佥 RH-2000N High-speed Rail Testing Equipment Company

 DIN wear GB-T9867-1988 DIN wear 3⁄43⁄4 machine GT-7012-D high-speed rail testing equipment company

 Acron wear 3⁄43⁄4佥

 Acron wear GB-T1689-1998 GT-7012-A high-speed rail testing equipment company

 Machine

 EPLEXOR

 Dynamic viscoelasticity GB T9870.1-2006 Dynamic viscoelastic spectrometer Germany GOBA

 500N The following chemicals are used in the examples and comparative examples

 2May rubber: Malaysian standard rubber;

 Isoprene rubber IR: Qingdao Ikos Materials Co., Ltd.;

 Liquid silicone firing coupling agent SG-SI998: (bis(triethoxypropylsilane) tetrasulfide), Nanjing Shuguang Auxiliary Co., Ltd.;

 Organosilane coupling agent X50S: Contains 50% N330 carbon black, 50% bis(triethoxypropylsilane) tetraide, Evonik Iridium (Rizhao) Chemical Industry Co., Ltd.;

 N115, N234, N550, Cabot (China) Investment Co., Ltd.;

 Zinc oxide, Dalian zinc oxide plant;

 Stearic acid, PF1808, Malaysia Licheng Co., Ltd.;

Antioxidant 020: N-(1.3-dimethylbutyl)-Ν'-phenyl-p-phenylenediamine, Jiangsu Shengao Chemical Technology Co., Ltd.; Anti-aging agent RD: 2,2,4-trimethyl-1, 2-dihydroquinoline polymer, Tianjin Kemai Auxiliary Co., Ltd.; accelerator NS (Ν-tert-butyl-2-benzothiazole sulfenamide): Shandong Shanghao Chemical Co., Ltd.; sulfur: Linyi Luozhuang Xin'an Chemical plant Manual comparison example 1

 140 Basic formula Other compounding agents are: SMR20 100; N23450; Zinc oxide 5; Stearic acid 3; Anti-aging agent 4020

1. 5; Antioxidant RD 1. 5; Microcrystalline wax 1; «Agent NS 1. 2; Sulfur 1.

 One part of the mixture was filled into 100 parts by weight of 20# standard rubber in an internal mixer with a rotation speed of 90 rpm. After 60 seconds of mastication, 33 parts by weight of carbon black N234 was added to the top plug; after 90 seconds of mixing, the top plug was cleaned and added. 17 parts by weight of carbon black; after mixing for 30 seconds, adding 5 parts by weight of zinc oxide, 3 parts by weight of stearic acid, 1.5 parts by weight of antioxidant RD, 1.5 parts by weight of 145 antioxidant 4020, 1 part by weight of microcrystalline wax, mixing 30 After the second, the top plug is cleaned, and the masterbatch is discharged for 30 seconds. The mixing time is 240 seconds, and the rubber discharge is 158 °C.

 The final rubber compound is mixed with 162 parts by weight of a mixed masterbatch in an internal mixer of 60 μπι, and after 30 seconds of mixing, the top plug is added with 1 part by weight of 5 yellow, 1.2 parts by weight of β agent NS, and mixed. After 60 seconds of refining, it is cleaned for 30 seconds and then discharged into the final rubber. The mixing time is 120 seconds. Discharge 3⁄4t3⁄4 98°C

 150 cases 1

 The basic formula other compounding agent is: SMR20 100; N23450; zinc oxide 5; stearic acid 3; antioxidant 4020 1. 5; antioxidant RD 1. 5, liquid silicon germanium coupling agent SG-SI9884, microcrystalline wax 1; Promoter NS 1. 2; sulfur yellow 1.

 One part of the mixture is filled with 100 parts by weight of 20# standard rubber in a mixer with a speed of 9 (3⁄4 pm), and after 60 seconds of mastication, a top plug is added to add 33 parts by weight of carbon black N234; after 90 seconds of mixing, i^h Top plug cleaning, adding 17 parts by weight of carbon black; 155 mixing for 30 seconds, adding 4 parts by weight of liquid silicon, 5 parts by weight of zinc oxide, 3 parts by weight of stearic acid, 1.5 parts by weight of antioxidant RD, 1.5 parts by weight of antioxidant 020, 1 part by weight of microcrystalline wax, after mixing for 30 seconds, ί strong top plug is cleaned, and then mixed for 30 seconds to discharge the masterbatch. The mixing time is 240 seconds, and the discharge temperature is 154 °C.

 The final rubber is filled with 166 parts by weight of a masterbatch in an internal mixer with a key of 60 rpm. After mixing for 30 seconds, i^h top plug is added with 1 part by weight of sulfur, 1.2 parts by weight of fiber NS, and kneading 60. After the second cleaning, after mixing for 30 seconds, the final 160 rubber is discharged, the mixing time is 120 seconds, and the rubber discharge is 3⁄43⁄4 is 102 °C.

 Table 3 Example 1 and Comparative Example 1 Performance Comparison Table

 Rubber composition formula name Comparative example 1 Example 1

 Binding gum content% 41 49.2

Resilience resilience, 23 ° C, %, 42 47 Resilience, 60 ^e C, %, 48 56

 Bottom temperature rise ' c 21.4 18.7

 Compressed heat generation

 Compression deformation % 4.2 3.8

 DIN wear index 117 138.1

 Wear index

 Acronyce Wear Index 109 123.7

 As can be seen from Table 3, the performance of Example 1 in which a silane coupling agent was added was compared with that of Comparative Example 1, and the content of the bonding gum was increased by 20%; the resilience performance at 23 ° C and 60 ° C was increased by 11% or more. The temperature rise at the bottom of the compressed heat is reduced by 12%. Abrasive performance improvements are particularly noticeable, DIN wear performance is increased by 18%; Akron wear index is increased by 13%. .

165 Comparative 2

 Basic formula: SMR20 100; N115 40; silane coupling agent X50S 8; zinc oxide 5; stearic acid 3; antioxidant 4020 1. 5; antioxidant RD 1. 5; microcrystalline wax 1; accelerator NS 1. 2 ; sulfur 1 .

 A mixing process: 100 parts by weight of SMR20 is added to an internal mixer at a speed of 90 rpm, and after 60 seconds of mastication, 26 parts by weight of N115 is added to the top plug; after 90 seconds of mixing, the top plug is cleaned, and the remaining 14 parts by weight of no N115 is added. After mixing for 30 seconds, 8 parts by weight of silane coupling agent X50S, 1.5 parts by weight of antioxidant 4020, 1.5 parts by weight of antioxidant RD, 5 parts by weight of zinc oxide, 3 parts by weight of stearic acid, 1 part by weight of microcrystalline wax; Mixing for 30 seconds, lifting the top bolt; mixing for 30 seconds, the total mixing time is 240 seconds, and the glue is 3⁄43⁄4t for 161 °C.

 Final rubber mixing process: Add 160 weights to the mixer at 60 rpm! ^ One-stage mixing of the masterbatch, after 30 seconds of mastication, adding 1 part by weight of sulfur and 1.2 parts by weight of accelerator NS; mixing after 60 seconds of mixing; mixing after 175 minutes of smelting for 30 seconds, the total mixing time is 120 In seconds, the discharge temperature is 95 °C.

 Example 2

 Basic formula: SMR20 100; N115 40; silane coupling agent X50S 8; zinc oxide 5; stearic acid 3; antioxidant 4020 1. 5; antioxidant RD 1. 5; microcrystalline wax 1; accelerator NS 1. 2 ; sulfur 1 . A mixing process:

 180 In the internal mixer with a 90-rpm key, 100 parts by weight of SMR20 is masticated for 50 seconds.

26 parts by weight of N115 and 5.3 parts by weight of silane X50S, after 90 seconds of mixing, ί strong top plug cleaning, force 14 parts by weight of N115 and 2.7 parts by weight of silane TESPT, mixing for 30 seconds, top plug cleaning, mixing for 30 seconds The total mixing time is 200 seconds and the 3⁄43⁄4t is 160 °C. Two-stage mixing process:

 In the mixer of 90rpm, the load is 149! ^ divided into a batch of masterbatch, kneaded for 80 seconds to put on the top plug, force 5 parts by weight of zinc oxide, 3 parts by weight of stearic acid, 1.5 parts by weight of antioxidant RD, 1.5 parts by weight of anti-aging agent bar; mixing 70 seconds cleaning ; further mixing for 30 seconds; the total mixing time is 180 seconds, and the glue is 3⁄43⁄4t at 155 °C.

 Final rubber mixing process:

 Add 160 weights to the 60 rpm mixer! ^Two-stage mixing of the masterbatch, mixing for 30 seconds, adding the top plug and adding 1 part by weight of sulfur and 1.2 parts by weight of NS; mixing for 60 seconds; mixing for 30 seconds, the total mixing time is 120 seconds. , Discharge 3⁄43⁄4t is 104 °C.

 Table 4 Example 2 and Comparative Example 2 Scheme Performance Index Comparison Table

从表 4对比数据可以看出， 实施例 2的压缩生热底部温升低于对比例 2约 17%。 动态粘弹谱仪测试橡胶组合物在从低温到高温的损耗因子变化趋势。 从图 1中可 以看出在 50°C至 80°C范围内， 实施例 2的损耗因子低于对比例 2方案， 说明滚动阻力 低于对比例 2， 应用于轮胎中， 可降低滚动阻力。

As can be seen from the comparative data of Table 4, the temperature rise of the compressed heat generating bottom of Example 2 was lower than that of Comparative Example 2. The dynamic viscoelastic spectrometer measures the tendency of the rubber composition to change in loss factor from low temperature to high temperature. It can be seen from Fig. 1 that the loss factor of Example 2 is lower than that of the Comparative Example 2 in the range of 50 ° C to 80 ° C, indicating that the rolling resistance is lower than that of Comparative Example 2, and it is applied to the tire to reduce the rolling resistance.

 Comparative example 3

 IR 100; N550 80; zinc oxide 5; stearic acid 3; antioxidant RD 1. 5; antioxidant 4020 1. 5; microcrystalline wax 1; sulfur 2; accelerator NS 1. 8.

 A mixing process:

In the internal mixer with a 90 rpm key, 100 parts by weight of synthetic isoprene rubber IR is masticated for 50 seconds. f^i: top plug, force 23 into the weight! ^Coke black N550, after 90 seconds of mixing, f^i: top plug cleaning, force into 27 parts by weight of carbon black N550, Mixing for 30 seconds, the top plug is cleaned, and the mixture is mixed for 30 seconds. The total mixing time is 200 seconds, and the rubber discharge is 3⁄43⁄4t at 159 °C. 205 two-stage mixing process:

 In the mixer of 90 rpm, weigh 180 weights! ^ divided into a batch of masterbatch, kneaded for 80 seconds to put on the top plug, force 5 parts by weight of zinc oxide, 3 parts by weight of stearic acid, 1.5 parts by weight of antioxidant RD, 1.5 parts by weight of anti-aging agent shed, 1 part by weight of crystallite Wax; mixing for 70 seconds; mixing for 30 seconds; total mixing time is 180 seconds, and extrusion is 3⁄43⁄4t at 149 °C.

 210 final rubber mixing process:

 Add 192 weights to the 60 rpm mixer! ^Two-stage mixing of the masterbatch, mixing for 30 seconds, adding the top plug and adding 2 parts by weight of sulfur and 1.8 parts by weight of NS; mixing for 60 seconds; mixing for 30 seconds, the total mixing time is 120 seconds. , Discharge 3⁄43⁄4t is 98 °C.

 Example 3

 215 IR 100; N550 80; X50S 8; zinc oxide 5; stearic acid 3; antioxidant RD 1. 5; antioxidant 4020 1. 5; microcrystalline wax 1; sulfur 2; accelerator NS 1. 8.

 A mixing process:

 After 100 parts by weight of synthetic isoprene rubber IR mastication for 50 seconds in an internal mixer with a 90 rpm key, f^i: top plug, 50 parts by weight of carbon black N550 and 5 parts by weight of silane coupling agent X50S, after 90 seconds of mixing, ί strong top bolt 220 is cleaned, 30 parts by weight of carbon black Ν 550 and 3 parts by weight of even «lj X50S, mixing for 30 seconds, lifting the top bolt, mixing for 60 seconds; The mixing time was 230 seconds and the discharge temperature was 162 °C.

 Two-stage mixing process:

 In the mixer of 90 rpm, we will force 188 weights! ^ Part of the masterbatch, knead for 80 seconds to put the top plug, force 5 parts by weight of zinc oxide, 3 parts by weight of stearic acid, 1.5 parts by weight of antioxidant RD, 1.5 parts by weight of anti-aging agent bar. 1 225 parts by weight of microcrystalline wax; mixing for 70 seconds; re-kneading for 30 seconds; total mixing time is 180 seconds, and the temperature of the glue is 152 °C.

 Three-stage mixing process:

Add 200 weights to the 60 rpm mixer! ^Two-stage mixing of the masterbatch, mixing for 30 seconds, adding the top plug and adding 2 parts by weight of sulfur and 1.8 parts by weight of NS; mixing for 60 seconds; mixing for 30 seconds, the total mixing time is 230. In seconds, the glue is 3⁄43⁄4t at 103 °C. 10 Table 5 Example 3 and Comparative Example 3 Scheme Performance Index Comparison Table

 As can be seen from the comparative data of Table 5, the compression heat generation of Example 3 was 8% lower than that of Comparative Example 3, the elasticity was improved, and the binder content was increased by 5%, using the rubber composition and process method designed by the present invention. It is indicated that the use of the method of the present invention can improve the combination of carbon black and rubber, thereby improving dynamic performance and reducing wear.

235 Comparative Example 4

 I 100; N375 50; zinc oxide 5; stearic acid 3; antioxidant RD 1. 5; antioxidant 4020 1. 5; microcrystalline wax 1; sulfur 1. 5;

 A mixing process:

 In the 90 rpm mixing process, 100 parts by weight of synthetic isoprene rubber IR was masticated for 50 seconds, then the top 240 was bolted, and 33 parts by weight of carbon black N375 was injected into the mouth. After 60 seconds of mixing, the top plug was cleaned, and the force was poured into 17 Parts by weight of carbon black N375, mixing for 30 seconds, plug cleaning, mixing for 60 seconds, the total mixing time is 200 seconds, and the glue is 161 °C.

 Two-stage mixing process:

 In the internal mixer of the car 1 of 90 rpm, 150 parts by weight of a masterbatch is added, and the top plug is kneaded for 80 seconds, and 5 parts by weight of zinc oxide, 3 parts by weight of stearic acid, and 1.5 parts by weight of an antioxidant are applied. RD, 1.5 parts by weight of anti-aging agent bar, micro 245 crystal wax 1, mixing for 70 seconds to clean; re-kneading for 30 seconds to discharge; total mixing time is 180 seconds. The glue is 151 °C.

 Final rubber mixing process:

 In the mixer 61 of the car 61 is 60 rpm, 162 parts by weight of the two-stage mixing masterbatch, mixing for 30 seconds to put the top plug plus 1.5 parts by weight of sulfur and 1.8 parts by weight of the fiber NS; mixing 60 seconds cleaning Re-kneading for 30 seconds, the total mixing time is 120 seconds, and the glue is 98 °C.

250 Example 4

IR 100; N375 50; liquid silane coupling agent 2; zinc oxide 5; stearic acid 3; antioxidant RD 1. 5; antioxidant 4020 1. 5; microcrystalline wax 1; sulfur 2; accelerator NS 1. 8 . A mixing process:

 After 100 parts by weight of synthetic isoprene rubber IR mastication for 50 seconds in an internal mixer with a 90 rpm key, f^i: top 255 plug, 30 parts by weight of carbon black N375 and 1.2 parts by weight of liquid silane coupling agent After 60 seconds of mixing, f^i: top plug cleaning, 20 parts by weight of carbon black N375 and 0.8 parts by weight of liquid silane coupling agent, mixing for 30 seconds, top plug cleaning, mixing for 60 seconds, and mixing The refining time is 200 seconds, and the rubber discharge is 3⁄4⁄4t at 159 °C.

 Two-stage mixing process:

 In the mixer with a 90 rpm car, weighed 152! ^ divided into a batch of masterbatch, kneaded for 80 seconds to put on the top plug, force into 260 5 parts by weight of zinc oxide, 3 parts by weight of stearic acid, 1.5 parts by weight of antioxidant RD, 1.5 parts by weight of anti-aging agent shed, microcrystalline wax 1 ; Mixing for 70 seconds; re-mixing for 30 seconds; the total mixing time is 180 seconds, and the glue is 3⁄43⁄4t at 154 °C.

 Three-stage mixing process:

 Add 164 weights to the 60 rpm mixer! ^Two-stage mixing of the masterbatch, mixing for 30 seconds, lifting the top plug and adding 1.5 weight of yellow and 1.8 weight of the leg NS; mixing for 60 seconds; mixing for 30 seconds, 265 total mixing 120 seconds, glue 3⁄43⁄4t l02 °C

 Table 6 Example 4 and Comparative Example 4 Scheme Performance Index Comparison Table

 It can be seen from the comparative data of Table 6 that with the rubber composition and the process method designed by the present invention, the temperature rise value of the compressed heat generation bottom portion of Example 6 was 11% lower than that of Comparative Example 6, the elasticity was improved, and the binder content was increased by 11%. It is indicated that the method of the invention can improve the combination of carbon black and rubber, thereby improving the dynamic performance.

Claims

claims 1. A rubber component with low hysteresis loss and high wear resistance, including: (A) 100 parts by weight of rubber; (B) 5-120 parts by weight of carbon black, preferably 20-90 parts by weight; (Q0.5-12 weight parts of organic silicone coupling agent, this weight part is based on the content of pure silicone coupling agent; the rubber component also includes activator, antioxidant, sulfur, vulcanization agent and optional Other rubber additives, the process shown is as follows: Masterbatch process: Rubber is mixed with carbon black and organic silane coupling agent, and the mixing temperature is in the range of 130-16 CTC for at least 1-5 minutes; Final rubber mixing process: The carbon black masterbatch, antioxidant, activator, accelerator, and vulcanizing agent are mixed according to the composition ratio to prepare a rubber composition. The final rubber mixing process is one or more stages. 2. The rubber composition according to claim 1, wherein the rubber includes natural rubber, synthetic polyisoprene rubber, butadiene rubber, styrene-butadiene rubber, or other polymers containing diene units. or more. 3. The rubber composition according to claim 1, wherein the carbon black STSA specific surface area is

4. The rubber composition according to claim 1, wherein the organic silicone coupling agent is one or more of the following general formulas: ( R _n - ( RO ) _3-n Si- (Alk) _m - ( Ar) _p )q (A) (I ) R _n ' (RO ) _3-n Si- (Alk) (Π) or ^! ^ ^^- (m) In the formula, when q=l, A is -SCN, -SH, -CI, -NH ₂ ; When q=2, A is -S _x -; R and R' are branched or linear alkyl or phenol groups with carbon atoms from 1 to 4, R and R' can be the same, or they can different; n is 0, 1 or 2; Alk is a straight or branched chain hydrocarbon group containing 1 to ό carbon atoms; Alkenyl is a straight-chain or branched alkenyl group containing 1 to ό carbon atoms; m is 0 or 1; Ar is an aryl group containing 6 to 12 carbon atoms; p is 0 or 1, p and n cannot be 0 at the same time; X is 2 to 8; The most commonly used are bis(triethoxypropylsilane) tetrasulfide and disulfide, 3-thiocyanatopropyl-triethoxysilane, and γ-mercapto-trimethoxysilane. 5. The rubber composition according to claim 1, wherein the dosage of the organic silane coupling agent is 0.5wt%-10wt% of the carbon black, preferably 1wt%-8%; 2 wt%-5 wt%. 6. The rubber composition according to claim 1; One or more kinds, the fatty acid metal soap salt is one or more zinc stearate, zinc borate, etc.; wherein the antioxidants include amine antioxidants, quinoline antioxidants, benzimidazole antioxidants, physical protection Wax; wherein the vulcanizing agents include but are not limited to sulfenamide accelerators, thiazole accelerators, gram accelerators, guanidine accelerators or combinations thereof, and the vulcanizing agents include but are not limited to sulfur, insoluble sulfur, fillers Oil sulfur, sulfur donor or combination thereof. 7. A rubber product prepared according to the rubber composition of the legs in claims 1-6.