Special and Comprehensive Review

• XU Li and ZHU Jia
• Development of Intelligent Tire Technology

• 2024 Vol. 44(7): 0387-0393

  [Abstract](167)

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• Abstract:The theoretical and technological development status of intelligent tires were summarized，the concept，characteristics，functions and classification of intelligent tires were introduced，and the characteristics of representative intelligent tires from well-known foreign tire companies were analyzed. The intelligent tire product systems were developed based on the basic structural characteristics and performance requirements of common tires，integrating advanced digital electronic technology to effectively monitor and predict the working status of tires and automotives，which was conductive to improve the maneuverability，comfort，safety of vehicles，and reduce fuel consumption，and tended to be a key component of automotive safety systems.In the future，intelligent tire system aims to maximize the comfort and safety of autonomous automotives passengers，while taking into account the safety and feelings of other traffic participants.

• SHENG Baoxin
• Generd principles of Structure Design of Aviation Tire

• 2024 Vol. 44(7): 0394-0398

  [Abstract](161)

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• Abstract:In this paper，the special details and precautions needed to be focused on the design of aviation tire structure were interpreted.The selection of tire type and structural type，tire specification designation，rated speed and speed level，load capability，general aviation tires used for helicopters，tire identification，determination of tire specification size increment，pneumatic dimension，grown dimension，minimum clearance allowance，diameter at rim，rim dimension，tread groove and so on were introduced，in order to provide help the structural designer of aviation tire.

Structure Design

• zhaoxiaoxia,WANG Jing,JIN Xiaoming,XU Minjie and WU Huizhong
• Design on 12R22.5 Lightweight All-steel Truck and Bus Radial Tire

• 2024 Vol. 44(7): 0399-0402

  [Abstract](145)

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• Abstract:The design on 12R22.5 lightweight all-steel truck and bus radial tire was introduced.In the structure design，the following paramemers were taken：overall diameter　1 074 mm，cross-section width　295 mm，width of running surface　218 mm，arc height of running surface　7 mm，bead diameter at rim seat　570 mm，bead width at rim seat　240 mm，maximum width position of cross-section（H₁/H₂）　0.919，four tortuous main pattern grooves for tread with V-shaped opening structure at the groove bottom，pattern depth　13 mm，block/total ratio　79.87%，and number of pattern pitches　67.In the construction design，the following processes were taken：two-formula and three-piece structure for tread，2＋7×0.30ST steelcord for 1# and 2# belt，5×0.35HI steel cord for 3# belt，3×7× 0.20HE steel cord for 0° belt，3×0.24/9×0.225CCST steel cord for carcass，using one stage building machine to build tire and vulcanization press to cure tire.The performance test results of the finished tire showed that the inflated peripheral dimension，strength，and durability of the tire met the requirements of national standards，the high-speed performance and grounding mark distribution met the requirements of enterprise standards，and the mass was lower than that of the same specification products.

• WANG Wei,WANG Jun,XU Wei,LIU Jie,LIU Jifa,XIANG Bingbing,DENG Haitong,WANG Ziqi and ZHAO Xiaoyan
• Design on 224/45ZR17 94WXL Ultra-high Performance Passenger Car Radial Tire

• 2024 Vol. 44(7): 0403-0407

  [Abstract](152)

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• Abstract:The design process of 225/45ZR17 94W XL Ultra-high Performance tire was introduced. The profile design values are as follows: overall diameter 626 mm,cross-sectional width 234 mm, longitudinal position ratio of the widest section is 0.95,width of tire crown running surface 191 mm, running surface arc height 7.9 mm.Pattern design:An asymmetrical pattern with 4 longitudinal grooves was determined，with the middle grooves depth 8.0 mm and the outer grooves 7.5mm，block/total ratio70.5% , number of pattern pitches 72.The construction design as follows：using SOT structure with one-step building machine,1000D/2 polyester fiber carcass and 3*0.28ST steel wire belting layer were selected. Using a hot plate curing press to cure tire with saturated steam + nitrogen. A number of tests were performed on finished tires, the indoor performance met the design and standard requirements.Through the evaluation of dry / wet braking, dry / wet handling stability and ride, the tire showed good comprehensive performance, especially the comfort and dry braking performance , which well meet the initial development expectations.

Material·Compounding

• lvguozheng,liuyuwan and liulei
• Application of Diacylhydrazine Material in Tread Base Compound of Truck and Bus Radial Tire

• 2024 Vol. 44(7): 0408-0412

  [Abstract](159)

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• Abstract:The application of diacylhydrazine material CSC920（abbreviated as CSC920） in tread base compound of truck and bus radial tire was studied.The results showed that CSC920 had a good modification effect on natural rubber，which could significantly accelerate the vulcanization reaction rate of the compound and increase the Mooney viscosity of the compound.After adding CSC920，the tensile stress，tensile strength，and elasticity of the base adhesive were improved，while the rolling resistance and heat generation were significantly reduced.During the mixing process，the addition of CSC920 before zinc oxide resulted in better physical properties of the base adhesive and a significant reduction in compression heat generation, The addition of CSC920 after zinc oxide could have an anti vulcanization and retrogradation effect，improving the physical properties of the rubber material，but the effect of reducing heat generation was not significant.

• XUE Binbin,WANG Zhihao,CHEN Jianjun and LI Peisheng
• Application of Carbonized Silica Micro Powder in Tread Compound of Commercial Vehicle Tire

• 2024 Vol. 44(7): 0413-0417

  [Abstract](135)

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• Abstract:The application of carbonized silica micro powder in the tread compound of commercial vehicle tire was studied.The results showed that the main component of of carbonized silica micro powder was silica，and its various physical and chemical properties met the requirements of enterprise standards.By using carbonized silica micro powder partially or tolally instead of silica，the vulcanization characteristics and processibility of the compound changed little.The permanent deformation of the vulcanizate was decreased，the compression heat build-up was reduced，and the cutting resistance was improved.The inflated peripheral dimention，durability and strength of the finished tire met the requirements of the national standards，and the production cost could also be reduced.

• WANG Haiyan,WU Jiachen and WANG Xun
• Effect of Carbon Black Oxidation Degree on Properties of BR/NR Blend

• 2024 Vol. 44(7): 0418-0421

  [Abstract](135)

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• Abstract:The effect of carbon black oxidation degree on the properties of butadiene rubber（BR）/natural rubber（NR） blends was studied.The Mooney viscosity of BR/NR blend filled with carbon black after treatment by high-temperature devolatilization or oxidation increased，and the processing performance deteriorated.Compared with untreated carbon black filled BR/NR blends，the high temperature devolatilization treated carbon black filled BR/NR blends showed an increase in modulus at 300% elongation，tensile strength and compressive fatigue temperature-rise increased，while the aging resistance decreased.As the oxidation degree of carbon black increased，the 300% tensile stress，tensile strength，tear strength and compressive fatigue temperature-rise of BR/NR blend decreased.As the volatile content and oxidation degree of carbon black decreased，the loss factor of BR/NR blend increased at 0 and 60 ℃.

• JIANG Songtao,XIONG Weihong,CHEN Sikui,LI Jian,FU Botao,Qin Xi and LI lili
• Application of Isomeric Polybutadiene Elastomer At400 in Shoulder Pad Compound of All-steel Radial Tire

• 2024 Vol. 44(7): 0422-0425

  [Abstract](133)

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• Abstract:The application of isomeric polybutadiene elastomer AT400（referred to as AT400）in the shoulder pad compound of all-steel radial tire was studied.The results showed that by replacing natural rubber with AT400 in partial doasge and reducing the amount of carbon black N330 in the shoulder pad compound，the effect on the vulcanization characteristics of the compound and the physical properties of the vulcanizate was smaller，the heat build-up of the compound decreased，and the durability of the finished tire was improved.

• FENG Ming,WANG Xuemei,ZHU Shudong,ZHANG Lili,LI Yanguo and XING Tao
• Application of Phenol Formaldehyde Resin MK-95 in Carcass Compound of Passenger Car Radial Tire

• 2024 Vol. 44(7): 0426-0429

  [Abstract](132)

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• Abstract:The application of phenol formaldehyde resin MK-95（referred to as MK-95） in the carcass compound of passenger car radial tire was studied.The results showed that MK-95 did not contain free resorcinol and other additives，and its softening point and volatile content were lower than those of resorcinol formaldehyde resin.Replacing resorcinol formaldehyde resin with an equal amount of MK-95 in the carcass compound，the vulcanization characteristics，physical properties，dynamic mechanical properties and adhesive properties of the compound were equivalent.The high-speed，durability and road test performance of the finished tire met the requirements.

• Ning Yantong,CHEN Xiang and FENG Yijia
• Application of Cable Type Steel Ring in Steel-belted Passenger Car Radial Tire

• 2024 Vol. 44(7): 0430-0433

  [Abstract](141)

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• Abstract:Taking 245/45R18 100W tire as an example，the application of cable type steel ring instead of hexagonal steel ring in steel-belted passenger car radial tire was investigated.The results showed that using cable type steel ring had good production processability，could effectively reduce tire weight，reduce rolling resistance and improve impact resistance，and significantly enhance the risk resistance of tire during use.

Technology · Equipment

• SUN Mingdian,WU Xiaofan,WANG Shiwei and WANG Tao
• Development and Design of Virtual Simulation System for Tire Building Process

• 2024 Vol. 44(7): 0434-0437

  [Abstract](101)

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• Abstract:In view of the limited training sites and equipment resources for tire building processing，a set of virtual simulation system for tire building process was developed and designed based on Unity 3D platform.This system simulated the working process of tire building through 3D modeling，animation demonstration，interactive operation，etc.，including the assembly and bonding of various parts such as carcass，tread，sidewall，and steel ring during the tire building process，and visualized the display in a virtual environment.

• LI Qingrui,ZHANG Wentao,ZHANG Kaikai,ZHANG Meng,HE Zhiyuan,FENG Haizhen and WANG Cong
• Causes Analysis and Solution of Inner Exposed Cords of All-steel Off-The-Road Radial Tire

• 2024 Vol. 44(7): 0438-0440

  [Abstract](150)

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• Abstract:Causes of inner exposed cords of all-steel off-the-road radial tires were analyzed and solutions were proposed.By taking measures such as ensuring that the flat width of the building machine and circumference of the belt fitting drum were reasonable，the size of the extruded rubber strip on the winding machine was stable，the circumference of the forming drum fan-shaped block was consistent，preventing the rubber pad from being misaligned，compacting the inner layer joint and setting the vulcanization setting pressure reasonably，the problem of inner exposed cord in the tire had been effectively solved.

Test·Analysis

• REN Shuai,LENG Dexin,ZHANG Hongyang,ZHANG Weiwei and SONG Jiaxin
• 245/40ZR17子午线轮胎骨架材料对刚度影响的仿真分析

• 2024 Vol. 44(7): 0441-0444

  [Abstract](135)

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• Abstract:Taked 245/40ZR17 radial passenger car tire as the research object，the finite element simulation method was used to study the effects of belt angle，belt density，tire body belt type，and crown belt winding method on tire stiffness. The results showed that the radial stiffness of the tire was most affected by the density of the belt cord，followed by the belt angle；the type of crown belt winding and the angle of the belt layer curtain had a significant impact on the longitudinal stiffness. Increasing the angle of the belt layer curtain would reduce the longitudinal stiffness，while increasing the amount of crown belt winding could improve the longitudinal stiffness；increasing the angle of the belt layer cord will increase the lateral stiffness，while the strength of the tire cord had a certain impact on the lateral stiffness but showed a non correlation；the type of crown strip winding had the greatest impact on torsional stiffness，and the S-shaped tire shoulder thickening crown strip winding method had the smallest torsional stiffness.

Domestic and Foreign News

• 赵敏
• 中化橡机工程机械轮胎硫化机新品投用

• 2024 Vol. 44(7): 0402-0402

  [Abstract](81)

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• 赵敏
• 一种轮胎胎里口袋结构及制造方法

• 2024 Vol. 44(7): 0412-0412

  [Abstract](116)

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• 赵敏
• 一种提高色彩饱和度的轮胎和轮胎硫化模具

• 2024 Vol. 44(7): 0412-0412

  [Abstract](112)

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• 赵敏
• 一种轮胎成型注塑模具

• 2024 Vol. 44(7): 0425-0425

  [Abstract](119)

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• 赵敏
• 一种对称胎面花纹结构轮胎

• 2024 Vol. 44(7): 0425-0425

  [Abstract](116)

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• 赵敏
• 中欧班列（西安）延长橡胶轮胎专列首发

• 2024 Vol. 44(7): 0429-0429

  [Abstract](75)

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• dongjiyang
• 中天钢铁新质生产力发展论坛在淮安成功举办

• 2024 Vol. 44(7): 0437-0437

  [Abstract](79)

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• 赵敏
• 一种基于人工智能的轮胎缺陷检测方法

• 2024 Vol. 44(7): 0444-0444

  [Abstract](82)

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• wangwenxia
• 《轮胎工业》第三届《橡胶科技》第二届理事会换届工作会议在连云港召开

• 2024 Vol. 44(7): 0445-0445

  [Abstract](104)

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• WANG Hong
• “圣奥杯”第15届全国橡胶助剂生产和应用技术研讨会在连云港成功举办

• 2024 Vol. 44(7): 0446-0446

  [Abstract](66)

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• Abstract: