CN104356440A - Glue adhered with TBR tire carcass steel wire and preparation method - Google Patents

Abstract

A sizing material bonded to carcass steel wire of a heavy-duty radial tire and a preparation method thereof, relating to a sizing material and a preparation method, the components of which include 100 parts of natural rubber, 40-60 parts of carbon black N330, 6-10 parts of zinc oxide, and a tackifier 1-3 parts of resin, 1-2 parts of anti-aging agent 4010NA, 6 parts of adhesive CS-9643, 0.3-1 parts of adhesion promoter, 2-2 parts of R-800.2-2 parts, 4-6 parts of insoluble sulfur, 1- parts of accelerator NOBS 2 parts, anti-scorch agent CTP0.1-1 part, adhesion promoter 0.1-1 part. The extraction force of the tire carcass compound composition prepared by the invention and the copper-plated steel wire after vulcanization and bonding, and the retention rate of the extraction force after hot air aging all meet the requirements, and the usage amount of cobalt salt is reduced, and the sticky The use of a combination accelerator enhances the adhesion between the rubber compound and the copper-plated steel wire, and the quality of the coating is also better.

Description

A kind of rubber material and preparation method for bonding with carcass steel wire of truck radial tire

technical field

The present invention relates to a rubber material and a preparation method, in particular to a rubber material and a preparation method for bonding with carcass steel wire of a load-bearing radial tire.

Background technique

The carcass of a radial truck tire is composed of copper-plated steel cords, and its durability depends on the adhesion between rubber and metal. important. At present, the typical bonding method used in the tire manufacturing industry is the direct bonding method, that is, the bonding system is directly added to the rubber compound, and the rubber compound and the steel cord are firmly bonded during the thermal vulcanization process. Cobalt salts are commonly used as cobalt promoters, but there are no reports of adhesion promoters and adhesion promoters used in combination.

Contents of the invention

The object of the present invention is to provide a kind of sizing material and preparation method that are bonded with carcass steel wire of heavy-duty radial tire, the extraction force after vulcanization and bonding of the carcass compound composition of heavy-duty tire prepared by the present invention and copper-plated steel wire, and After hot air aging, the retention rate of the pumping force meets the requirements, and the usage of cobalt salt is reduced.

The purpose of the present invention is achieved through the following technical solutions:

A rubber material bonded to the carcass steel wire of a heavy-duty radial tire, the proportion of the rubber material composition is as follows by weight: 100 parts of natural rubber, 40-60 parts of carbon black N330, 6-60 parts of zinc oxide 10 parts, tackifying resin 1-3 parts, anti-aging agent 4010NA 1-2 parts, adhesive CS-964 3-6 parts, adhesion promoter 0.3-1 parts, R-80 0.2-2 parts, insoluble sulfur 4 -6 parts, accelerator NOBS 1-2 parts, anti-scorch agent CTP 0.1-1 parts, adhesion promoter 0.1-1 parts.

The rubber material bonded to the carcass steel wire of the truck radial tire, the adhesion promoter is cobalt decanoate, decanoate compound salt Z-1 and cobalt boroacylate, boroacylate compound salt Z-1 2. Provided by Chaoyang Zhenghe Chemical Co., Ltd.

Adhesion promoters and adhesion promoters are combined in different proportions.

The tackifying resin is a petroleum resin.

The adhesion promoters are adhesion promoters P-1 and P-2, provided by Chaoyang Zhenghe Chemical Co., Ltd.

A method for preparing a rubber compound bonded to carcass steel wire of a radial truck tire, said method comprising the following preparation steps:

a. First pass the natural rubber on the mill for 5 times, then add zinc oxide, accelerator, anti-aging agent, anti-scorch agent, cobalt salt in turn, and then add carbon black, adhesive, R-80 after mixing evenly , tackifying resin, adhesion promoter, further mixing and finally adding insoluble sulfur; after that, pack the mixed rubber 10 times, mix it evenly, and leave it for 24 hours to use;

b. Return the film that has been parked for 24 hours and reload it for later use.

c. Vulcanize the mixed rubber in b according to GB/T16586-1996, control the temperature at 145°C, and measure the curing time with a rotorless vulcanizer; after the time is reached, take out the vulcanized rubber and let it cool naturally , that is, vulcanized samples are obtained, which are used to determine the bonding performance of the rubber compound and the steel wire.

The invention discloses a rubber material composition bonded with carcass steel wire of a heavy-duty radial tire and the preparation steps of a sample after aging of the vulcanized rubber:

Put the vulcanized sample above into a hot air aging box at 100°C for 72 hours, take out the sample, and cool it naturally to obtain the aged sample, which is used to measure the bonding performance of the aged rubber compound to the steel wire.

Advantage and effect of the present invention are:

1. The present invention discloses a rubber compound bonded with radial truck tire carcass steel wire and copper-plated steel wire. The pull-out force after vulcanization and bonding, and the pull-out force retention rate after aging can meet the requirements.

2. The invention discloses a rubber compound bonded to carcass steel wire of a heavy-duty radial tire, which reduces the amount of cobalt salt and is low in cost.

Detailed ways

Below in conjunction with embodiment, the present invention is described in further detail.

The raw materials and reagents used in the present invention include: No. NR 1, industrial grade, Shenyang Three Oaks Co., Ltd. N330, industrial grade, Cabot Chemical (Tianjin) Co., Ltd. Accelerator NOBS, industrial grade, Tianjin Organic Chemical No. 1 Plant. 4010NA, analytically pure, Shenyang Three Oaks Co., Ltd. CTP-100, industrial grade, commercially available. Insoluble sulfur, industrial grade, commercially available. Cobalt boroacylate, industrial grade, Chaoyang Zhenghe Chemical Co., Ltd. Cobalt decanoate, industrial grade, Chaoyang Zhenghe Chemical Co., Ltd. Capric acid compound salt Z-1, industrial grade, Chaoyang Zhenghe Chemical Co., Ltd. Boroacylated compound salt Z-2, industrial grade, Chaoyang Zhenghe Chemical Co., Ltd. Adhesion promoter P-1, No. 2 industrial grade, Chaoyang Zhenghe Chemical Co., Ltd. NOBS, industrial grade, commercially available. ZnO, industrial grade, Dalian Zinc Oxide Factory. R-80, industrial grade, commercially available. CS-964, industrial grade, commercially available.

The instrument equipment used in the present invention comprises:

Two-roller open rubber mixing machine, XK-160, Qingdao Universal Machinery Co., Ltd. Rubber rotorless vulcanizer, GT-M2000-A, Taiwan High Speed Rail Technology Co., Ltd. Flat vulcanizing machine, XLB-DQ400×400×2E, Qingdao Universal Machinery Co., Ltd. Film processor, CP-25, Shanghai Chemical Machinery No. 4 Factory. Shore rubber and plastic hardness tester, XHS, Yingkou Material Testing Machine Factory. Microcomputer electronic control universal testing machine, RGL-RH2000-A, Taiwan High Speed Rail Technology Co., Ltd. Aging test chamber, GT-7017-M type, Taiwan High Speed Rail Technology Co., Ltd.

Examples are given below, but it should be noted that practice of the present invention is not limited to the following embodiments.

Example 1 A compound composition bonded to carcass steel wire of a truck radial tire, the proportion is by weight, and its components include: 100 parts of natural rubber, 60 parts of carbon black N330, 6 parts of zinc oxide, tackifying resin 1 part, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 0.58 parts of adhesion promoter, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, 0.1 part of anti-scorch agent CTP, adhesive Combined with enhancer P-1 0.36 parts.

The adhesion promoter described in this embodiment is cobalt decanoate, provided by Chaoyang Zhenghe Chemical Co., Ltd.

The adhesion promoter P-1 described in this embodiment is a composite metal organic salt provided by Chaoyang Zhenghe Chemical Co., Ltd.

The preparation steps of a rubber compound composition bonded to a carcass steel wire of a truck radial tire and a vulcanized sample thereof described in this embodiment:

1. First pass the natural rubber on the mill for 5 times, then add zinc oxide, accelerator, anti-aging agent, anti-scorch agent, adhesion promoter, and then add carbon black, adhesive, R -80, tackifying resin, adhesion promoter, further mixing and finally adding insoluble sulfur; after that, pack the mixed rubber 10 times, mix it evenly, and leave it for 24 hours for later use;

2. Return the film that has been parked for 24 hours and reload it for later use.

3. Take an appropriate amount of reverse mixing rubber in 2 and put it into a vulcanizer to measure the vulcanization characteristics.

4. Vulcanize the mixed rubber in 2 according to GB/T16586-1996, the temperature is controlled at 145°C, and the curing time is determined by measuring with a rotorless vulcanizer; after the time is reached, take out the vulcanized rubber and let it cool naturally , that is, vulcanized samples are obtained, which are used to determine the bonding performance of the rubber compound and the steel wire.

The preparation steps of a rubber composition bonded to the radial truck tire carcass steel wire and its vulcanized rubber aging sample described in this embodiment:

Put the vulcanized sample above into a hot air aging box at 100°C for 72 hours, take out the sample, and cool it naturally to obtain the aged sample, which is used to measure the bonding performance of the aged rubber compound to the steel wire.

The vulcanization characteristics of a carcass compound composition containing an adhesion promoter and an adhesion promoter used together in this embodiment are shown in Table 1. The adhesion performance of the vulcanized sample before and after aging is measured by the It is characterized by the maximum pulling force when it is pulled out from the vulcanized rubber, that is, the pulling force, which is carried out according to GB/T16586-1996; the tensile performance test of the sample before and after aging is carried out according to the GB/T528-2009 standard; the sample aging process is carried out according to the GB/T3512-2001 standard carried out, and the results are shown in Table 2.

Example 2 The difference between this example and Example 1 is that the amount of adhesion promoter P-1 is reduced and the amount of adhesion promoter P-1 is increased. The specific formula is: 100 parts of natural rubber, 60 parts of carbon black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, and 0.1 part of anti-scorch agent CTP. Adhesion promoter 0.49 Adhesion promoter P-1 0.6 parts.

The adhesion promoter described in this embodiment is cobalt decanoate, and the adhesion promoter P-1 is a composite metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 3 The difference between this example and Example 1 is that the amount of adhesion promoter P-1 is reduced and the amount of adhesion promoter P-1 is increased. The specific formula is: 100 parts of natural rubber, 60 parts of carbon black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, 0.1 part of anti-scorch agent CTP, and 0.33 parts of adhesion promoter Part adhesion promoter P-1 0.4 part.

The adhesion promoter described in this embodiment is cobalt decanoate, and the adhesion promoter P-1 is a composite metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 4 The difference between this example and Example 1 is that the amount of adhesion promoter P-1 is reduced and the amount of adhesion promoter P-1 is increased. The specific formula is: 100 parts of natural rubber, 60 parts of carbon black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, 0.1 part of anti-scorch agent CTP, 0.27 parts of adhesion promoter Part, adhesion promoter P-1 0.33 part.

The adhesion promoter described in this embodiment is cobalt decanoate, and the adhesion promoter P-1 is a composite metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 5 The difference between this example and Example 1 is that the adhesion promoter is changed to 0.32 parts of cobalt boroacylate, and the amount of adhesion promoter P-1 is reduced. The specific formula: 100 parts of natural rubber, carbon black 60 parts of N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of antioxidant 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, anti-scorch agent CTP 0.1 part, adhesion promoter 0.32 part, adhesion promoter P-1 0.2 part.

The adhesion promoter described in this embodiment is cobalt boroacylate, and the adhesion promoter P-1 is a composite metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 6 The difference between this example and Example 1 is that the adhesion promoter is changed to capric acid salt, and the specific formula is: 100 parts of natural rubber, 60 parts of carbon black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, 0.1 part of anti-scorch agent CTP, 0.61 parts of adhesion promoter, adhesion promoter P-1 0.27 parts.

The adhesion promoter described in this embodiment is a capric acid compound salt Z-1, and the adhesion promoter P-1 is a compound metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 7 The difference between this example and Example 1 is that the adhesion promoter is changed to capric acid compound salt Z-10.51 parts, and the amount of adhesion promoter P-1 is reduced. The specific formula: 100 parts of natural rubber, charcoal 60 parts of black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, anti-scorch Agent CTP 0.1 part, adhesion promoter 0.51 part, adhesion promoter P-1 0.23 part.

The adhesion promoter described in this embodiment is a capric acid compound salt Z-1, and the adhesion promoter P-1 is a compound metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 8 The difference between this example and Example 1 is that the adhesion promoter modified decanoic acid compound salt Z-10.41 parts, and the consumption of the adhesion promoter P-1 is increased, the specific formula: 100 parts of natural rubber, carbon black 60 parts of N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of antioxidant 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, anti-scorch agent CTP 0.1 part, adhesion promoter 0.41 part, adhesion promoter P-1 0.5 part.

The adhesion promoter described in this embodiment is a capric acid compound salt Z-1, and the adhesion promoter P-1 is a compound metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 9 The difference between this example and Example 1 is that the amount of the adhesion promoter is reduced and the amount of the adhesion promoter P-1 is increased. The specific formula: 100 parts of natural rubber, 60 parts of carbon black N330, zinc oxide 6 parts, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, 0.1 part of anti-scorch agent CTP, adhesive Accelerator 0.27 parts, adhesion promoter P-1 0.33 parts.

The adhesion promoter described in this embodiment is a capric acid compound salt Z-1, and the adhesion promoter P-1 is a compound metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 10 The difference between this example and Example 1 is that the adhesion promoter is changed to boroacylated compound salt Z-2, and the specific formula is: 100 parts of natural rubber, 60 parts of carbon black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, 0.1 part of anti-scorch agent CTP, 0.51 parts of adhesion promoter Part, adhesion promoter P-1 0.23 part.

The adhesion promoter described in this embodiment is boroacylated compound salt Z-2, and the adhesion promoter P-1 is a compound metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 11 The difference between this example and Example 1 is that 0.27 parts of the bond-promoting potted fresh flower compound salt reduces the amount of the adhesion promoter P-1, and the specific formula is: 100 parts of natural rubber, 60 parts of carbon black N330 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of antioxidant 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, 0.1 parts of anti-scorch agent CTP part, adhesion promoter 0.27 part, adhesion promoter P-1 0.33 part.

The adhesion promoter described in this example is boroacylated compound salt Z-2, provided by Chaoyang Zhenghe Chemical Co., Ltd.

The promotion accelerator described in this example is a composite metal organic salt provided by Chaoyang Zhenghe Chemical Co., Ltd.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 12 The difference between this example and Example 1 is that the adhesion promoter is changed to 0.396 parts of boroacylated compound salt Z-2, and the adhesion promoter is changed to 0.63 parts of adhesion promoter P-2. The specific formula: natural rubber 100 parts, 60 parts of carbon black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of antioxidant 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS parts, anti-scorch agent CTP 0.1 parts, adhesive CS-964 5 parts, adhesion promoter P-2 0.63 parts.

The adhesion promoter described in this embodiment is boroacylated compound salt Z-2, and the adhesion promoter P-2 is a compound metal organic salt, provided by Chaoyang Zhenghe Chemical Co., Ltd.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 13 The difference between this example and Example 1 is that 0.297 parts of caprate is used instead of adhesion promoter, and 0.75 parts of adhesion promoter P-2 is used instead of adhesion promoter. The specific formula is: 100 parts of natural rubber, charcoal 60 parts of black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, anti-scorch Agent CTP 0.1 part, adhesion promoter 0.297 part, adhesion promoter P-2 0.75 part.

The adhesion promoter described in this embodiment is boroacylated compound salt Z-2, and the adhesion promoter P-2 is a compound metal organic salt, provided by Chaoyang Zhenghe Chemical Co., Ltd.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 14 The difference between this example and Example 1 is that 1.2 parts of cobalt decanoate is used instead of adhesion promoter, and 0.75 parts of adhesion promoter P-2 is used instead of adhesion promoter. The specific formula is: 100 parts of natural rubber, charcoal 60 parts of black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, anti-scorch Agent CTP 0.1 part, adhesion promoter 1.2 parts, adhesion promoter P-2 0.75 parts.

The adhesion promoter described in the present embodiment is boroacylated compound salt Z-2, and the adhesion promoter P-2 is a kind of composite metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 15 The difference between this example and Example 1 is that 0.297 parts of cobalt decanoate is used instead of adhesion promoter, and 0.75 parts of adhesion promoter P-2 is used instead of adhesion promoter. The specific formula: 100 parts of natural rubber, charcoal 60 parts of black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of anti-aging agent 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, anti-scorch Agent CTP 0.1 part, adhesion promoter 0.297 part, adhesion promoter P-2 0.75 part.

The adhesion promoter described in the present embodiment is boroacylated compound salt Z-2, and the adhesion promoter P-2 is a kind of composite metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Example 16 The difference between this example and Example 1 is that 0.25 parts of cobalt boroacylate is used instead of adhesion promoter, and 0.67 parts of adhesion promoter P-2 is used instead of adhesion promoter. The specific formula is: 100 parts of natural rubber, 60 parts of carbon black N330, 6 parts of zinc oxide, 1 part of tackifying resin, 1.5 parts of antioxidant 4010NA, 4 parts of adhesive CS-964, 1.5 parts of R-80, 4 parts of insoluble sulfur, 1.5 parts of accelerator NOBS, Coke agent CTP 0.1 part, adhesion promoter 0.25 part, adhesion promoter P-2 0.67 part.

The adhesion promoter described in the present embodiment is boroacylated compound salt Z-2, and the adhesion promoter P-2 is a kind of composite metal organic salt.

The preparation method and performance test standard of this example are the same as those of Example 1, and will not be repeated here.

The carcass compound composition of a carcass of a radial truck tire containing an adhesion promoter and an adhesion promoter described in this example has vulcanization characteristics shown in Table 1, and the test results of various properties of the vulcanized sample are shown in Table 2 shown.

Table 1 Table of vulcanization characteristics

Table 2 Mechanical properties table

Test items Tensile strength/MPa 300% modulus stress/MPa Elongation at break/% Tensile set/% Extraction force/N Extraction force after aging/N Pull out force retention % Example 1 20.25 15.51 387.16 28.8 713 585 82.00 Example 2 19.08 14.14 393.97 37.8 710 559 78.70 Example 3 22.25 15.45 395.01 27.2 725 590 81.30 Example 4 21.47 14.64 401.79 33.2 671 578 86.14 Example 5 21.47 14.1 443.13 35.4 700 562 80.28 Example 6 20.35 16.95 362.08 26.8 736 504 68.48 Example 7 22.84 12.18 496.03 31.2 678 536 79.06 Example 8 21.11 16.39 380.77 28.02 719 421 58.56 Example 9 22.00 15.46 425.26 30.06 695 475 68.35 Example 10 21.87 13.89 459.36 30.40 747 624 83.53 Example 11 19.25 14.35 433.91 25.10 700 582 83.14 Example 12 19.16 14.13 404.14 26.05 707 642 90.81 Example 13 19.98 15.15 380.33 22.80 728 564 77.47 Example 14 20.35 16.95 362.08 24.83 956 795 83.16 Example 15 18.12 14.22 339.35 20.45 798 715 89.60 Example 16 19.65 15.21 336.38 21.59 737 658 89.28

Claims (4)

1. a sizing material bonding with heavy load radial tire carcass cord, it is characterized in that, the proportioning of described sizing composition, its component is as follows by weight: natural rubber 100 parts, carbon black N330 40-60 part, zinc oxide 6-10 part, tackifying resin 1-3 part, antioxidant 4010NA 1-2 part, adhesive C S-964 3-6 part, adhesion promotor 0.3-1 part, R-80 0.2-2 part, insoluble sulfur 4-6 part, accelerant NOBS 1-2 part, anti-scorching agent CTP 0.1-1 part, adhesionpromoter 0.1-1 part.

2. a kind of sizing material bonding with heavy load radial tire carcass cord according to claim 1, is characterized in that, described adhesionpromoter is adhesionpromoter P-1, P-2.

3. a kind of sizing material bonding with heavy load radial tire carcass cord according to claim 1, is characterized in that, described adhesion promotor is cobalt decanoate, capric acid composite salt Z-1 and cobalt boracylate, boron acidylate composite salt Z-2.

4. a sizing material preparation method bonding with heavy load radial tire carcass cord, is characterized in that, described method comprises following preparation process:

A. first by natural rubber thin-pass 5 times on a mill until, then zinc oxide, promotor, anti-aging agent, scorch retarder is added successively, cobalt salt, mixing evenly after add carbon black, tackiness agent, R-80, tackifying resin, adhesionpromoter successively, mixingly finally add insoluble sulfur further; Rubber unvulcanizate is packed 10 times afterwards, mixes bottom sheet, park 24 hours stand-by;

B. will park the film back mixing bottom sheet again of 24 hours, stay with stand-by;

C. the rubber unvulcanizate in b is carried out sulfuration sample preparation according to GB/T16586-1996, temperature controls at 145 DEG C, and curing time is determined without rotor vulkameter records; After time of arrival, taking out cross-linked rubber, by its naturally cooling, namely obtaining cured samples, for measuring the adhesiveproperties of sizing material and steel wire.