Applied Theory

• WANG Qiang,QI Xiao-jie,WANG Yun-long,YANG Zhao and WANG Guo-tian
• Temperature Rise Characteristic of Engineering VehicleRefurbished Tires

• 2019 Vol. 66(6): 0403-0408

  [Abstract](16)

  [HTML()]

  [PDF]()

• Abstract:In order to further clarify the temperature rise characteristic of engineering vehicle refurbished tire, computer geometry models and the finite element analysis modesl of the 26.5 R25 engineering vehicle refurbishment tire were built using Pro/E Wildfire and ANSYS Workbench software, the boundary conditions of finite element analysis of steady state temperature field was determined, then the steady-state temperature field test system for the rolling working condition of engnineering vehicle refurbished tire was constructed, and last the temperature field distribution characteristics and heat flux distribution characteristics of the tire layer, buffer layer, belt layer, tread body layer, tire side layer and toe mouth rubber layer along the width direction and radial direction of the tire were obtained. The simulation and test results are shown: the two sides of the tread body layer shoulder had the highest temperature, with the lowest temperature on the belt layer, buffer layer, and both sides along the width direnction of tread body layer. The interior temperature of the refurbished tire increased with the speed of the runing tire, among them, the temperature of the buffer layer and the tire layer increased greatly, and the tread body layer was the second, and the temperature of the belt layer was the smallest. The maximum heat flux was near the shoulder position of the tread body layer, and the heat flux of belt layer and on both sides of tire layer width direction was the largest, the maximum heat flux was on both sides of the buffer layer width direction, the maximum heat flux was at the junction of the tire side

• he yan,jiang ying nan,tang yuan zheng,chen hao,ma lian xiang and li kang
• Molecular Dynamics Simulation on Tensile Behavior of Rubber Materials

• 2019 Vol. 66(6): 0409-0412

  [Abstract](11)

  [HTML()]

  [PDF]()

• Abstract:Under the same all-atomic model，degree of polymerization，temperature and pressure，the tensile behavior of the molecular model of natural rubber（NR），gutta percha（TPI）and butadiene rubber（BR）was simulated by molecular dynamics method to investigate the change of the stress-strain，energy，mean square displacement and mean square radius of gyration.The results showed that，the tensile properties of NR molecular model and TPI molecular model wer basically consistent，while the BR molecular model showed a greater stress response than the former two，and the tensile properties of rubber were highly correlated with the fluidity of the atoms in the molecules.

• Cai Yongzhou,Zeng Fanlin,OuYangjun and Zang Mengyan
• Simulation of Tire Stiffness Characteristics during Tire Blow-out Based on LS-DYNA

• 2019 Vol. 66(6): 0461-0465

  [Abstract](10)

  [HTML()]

  [PDF]()

• Abstract:Based on LS-DYNA nonlinear finite element analysis softwar，using shell element model to simulate cord-rubber composite materials，the finite element model of 215/60R16 radial tire was established，and the tire blow-out process was simulated by different inflation pressure.Under different inflation pressure，the tire deformation at vertical，transverse and longitudinal load was analyzed.The results showed that the stiffness of tire declined sharply with the decrease of inflation pressure，respectivly the vertical，transverse and longitudinal stiffness were reduced to about 30%，38% and 40% of normal inflation pressure.The three-dimensional stiffness variation characteristics of tire under different inflation pressures obtained in this study could provide a basis for the dynamic response and handling stability analysis of tire blow-out vehicle.

Material · Compounding

• ZHAO Xianghui,YU Bo,XIE Jintao and ZHENG Tianlai
• Study on Tear Strength of EPDM and NBR at High Temperature

• 2019 Vol. 66(6): 0413-0417

  [Abstract](10)

  [HTML()]

  [PDF]()

• Abstract:The tear strength of EPDM and NBR at different temperatures was studied.The results showed that the tear strength of EPDM and NBR compound decreased as temperature increasing，which basically conformed to Arrhenius equation.The tear strength at room temperature was about four times of that at high temperature.Through the ratio of the tear strength at room temperature to high temperature（room to high temperature tear strength ratio），the tear strength at high temperature could be directly calculated from the tear strength at room temperature.NR had higher tear strength at high temperature，so the tear resistance of other kinds of rubber at high temperature could be improved by blending NR.

• YAO Hainan,GAO Changqin,DING Xuejia and XU Fujian
• Effect of Surface Grafted PHAMA on Hydrophilic Property of Silicone Rubber

• 2019 Vol. 66(6): 0418-0421

  [Abstract](10)

  [HTML()]

  [PDF]()

• Abstract:The hyaluronic acid sodium salt was reacted with methacrylic anhydride at 40 ° C for 6 h to synthesize hyaluronic acid methacrylate（HAMA），and then PHAMA was grafted onto the surface of methyl vinyl silicone rubber by ultraviolet radiation.Fourier infrared spectroscopy，scanning electron microscopy and thermogravimetric analysis showed that PHAMA grafted successfully.The surface contact angle of PHAMA grafted silicone rubber decreased from 107. 5° to 68. 7°，and the hydrophilicity improved.

• YAN Dong,HUANG Shiwen and GU Ju
• Effect of Coupling Agent Si69 Modified Straw Nanocellulose on Performance of Carbon Black Reinforced NR

• 2019 Vol. 66(6): 0422-0429

  [Abstract](11)

  [HTML()]

  [PDF]()

• Abstract:The rod-shaped straw nanocellulose（SNC） was grafted by coupling agent Si69 to obtain modified rod-shaped straw nanocellulose（MSNC）.The effect of MSNC on the properties of carbon black（CB） reinforced natural rubber（NR） was studied.The results showed that，MSNC had better compatibility with rubber matrix.Compared with CB/SNC/NR composite，CB/MSNC/NR composites had greater crosslink density，better wet skid resistance and lower rolling resistance，stronger cross-linking network，more restricted rubber molecules and better thermal stability.CB/MSNC/NR composite with a ratio of 100/35/10 had the best physical properties.

• SONG Junping,TIAN Kaiyan,LI Xiteng,WANG Yiwen and MA Lianxiang
• Effect of Carbon Black/Carbon Nanotubes Blend Ratio on Physical Properties and Thermal Conductivity of NR Composites

• 2019 Vol. 66(6): 0430-0434

  [Abstract](9)

  [HTML()]

  [PDF]()

• Abstract:The effects of the blend ratio of carbon black（CB）/carbon nanotubes（CNTs） on the physical properties and thermal conductivity of natural rubber（NR） composites were studied.The results showed that，the properties of CB/CNTs/NR composites were improved compared with those of CB/NR composites.When the blend ratio of CB/CNTs was 28/7，the physical properties of the composites were the best，the storage modulus was the largest，the loss factor peak value was the lowest，and the thermal conductivity was the highest.It was showed by transmission electron microscopy that when the blend ratio of CB/CNTs was 28/7，CB and CNTs were dispersed uniformly，CNTs were not bent and agglomerated，and the CB aggregates were bridged by CNTs，thus a good filler network was constructed.When the amount of CNTs continued to increase，CB and CNTs occured.The properties of composites were closely related to the filler network synergistic effect.

• CHEN Mingwei,GAO Qian,LI Kongbiao,ZHU Fanfan and ZHENG Tianlai
• Study on Low Temperature Brittleness Property of FKM

• 2019 Vol. 66(6): 0435-0439

  [Abstract](9)

  [HTML()]

  [PDF]()

• Abstract:The relationship between the glass transition temperature（Tg），low temperature retraction temperature（TR10） and brittleness temperature（Tbri） characterizating the low temperature performance of fluoroelastomer（FKM）was analysed.The effects of raw rubber，fillers and mixing process on the low temperature brittlement properties of binary and ternary FKM were investigated.The results showed that，Tg of FKM was similar to TR10，which both could reflect the low temperature motion and glass state temperature of FKM molecular chain.The peroxide-cured FKM with high fluorine content had better low temperature resistance，and the bisphenol-cured binary FKM had worse low temperature resistance.The FKM filled with carbon black N774 had better low temperature resistance.Mixing times had little effect on the low temperature brittleness of FKM.

• jing yu and Wu Ming-sheng
• Effect of Sulfur Content on Structure and Properties of Natural Rubber Latex Film

• 2019 Vol. 66(6): 0440-0444

  [Abstract](11)

  [HTML()]

  [PDF]()

• Abstract:The vulcanized natural rubber latex film was prepared by the coagulant dipping method, and its structure and properties were studied. The results showed that the degree of pre-vulcanization of natural rubber latex increased with the increase of the amount of sulfur. The crosslinked degree of vulcanizate increased firstly and then decreased as the content of sulfur increase, and reached the maximum value when the amount of sulfur is 1.25phr. The tensile strength increased firstly and then decreased with the increase of sulfur content, and reached the maximum value when the amount of sulfur is 1phr, and the elongation at break showed a downward trend. The film achieved the best compactness when the amount of sulfur is 1phr.

• WANG Xue,Hu Zhenpeng,JiangYunping,Yin Chunzhao and Feng Tao
• Application of Domestic Environment-friendly Plasticizer in SSBR

• 2019 Vol. 66(6): 0445-0449

  [Abstract](10)

  [HTML()]

  [PDF]()

• Abstract:The application of domestic environment-friendly plasticizer HJA2026 and HJA1824 in solution polymerized styrene-butadiene rubber（SSBR） was studied.The results showed that，some properties of SSBR compound filled with domestic environment-friendly plasticizer HJA1824 still lagged behind that of imported plasticizer V500.The curing characteristics，physical properties，wet slip resistance，compression fatigue resistance，rolling resistance and cutting resistance of SSBR compound filled with domestic environment-friendly plasticizer HJA2026 were similar to those of SSBR compound filled with imported plasticizer V500 compound，and the wear resistance was the best.Domestic environment-friendly plasticizer HJA2026 could replace imported plasticizer V500.

• GAN Yinsi,JIANG Zhengyong,XIA Minghui and LENG Jing
• Development of Low-smoke Halogen-free Flame-retardant EPDM Insulating Compound

• 2019 Vol. 66(6): 0456-0460

  [Abstract](11)

  [HTML()]

  [PDF]()

• Abstract:The development of low-smoke halogen-free flame-retardant EPDM insulating compound was introduced. The optimized formulation of low-smoke halogen-free flame-retardant EPDM insulating compound was as follows：EPDM　100，composite flame retardant PF　15，Alumium hydroxide ATH 104E　90，magnesium hydroxide MH3005Z　30，MMT　5，zinc oxide　5，stearic acid　1，paraffin oil　10，antioxidant RD　1.5，coupling agen A172　1.5，curing agent DCP　3，accelerator　1.5，others　5. The flame retardancy，electrical insulation property and physical property of the cable insulation core used the optimized formulation met the requirement Completely.

Product · Design

• LI Miaomiao,CHEN Weifang,CUI Huiting and LI Zhuo
• Influence of Installation Interference and Medium Pressure on Sealing Performance of Rotating Shaft Lip Rubber Seals

• 2019 Vol. 66(6): 0450-0455

  [Abstract](9)

  [HTML()]

  [PDF]()

• Abstract:The rotating shaft lip rubber seal ring（lip seal ring for short） working under water was studied.Based on the finite element analysis method，the effects of installation interference and medium pressure on the sealing performance of the lip seal ring were investigated.A three-dimensional axisymmetric finite element model of the lip ring seal was set up using ANSYS software.Simulation analysis showed that，the contact width and maximum contact pressure at the lip increased with the increase of the interference at installation，and the spring-loaded lip seal had a larger contact width and a greater contact pressure than the spring-unloaded lip seal；with the increase of the medium pressure，the maximum contact pressure at the lip increased.The maximum contact pressure occured at the tip of the lip.The maximum contact pressure was always greater than the medium pressure.

Technology · Equipment

• yuxiaodong
• Study on Regeneration Process of Waste Rubber at Low Temperature by Two - step Mechanochemical

• 2019 Vol. 66(6): 0466-0470

  [Abstract](9)

  [HTML()]

  [PDF]()

• Abstract:In this paper, according to the Chemical regeneration mechanism, we used the mixer and open roll which were researched and developed by our own laboratory to study the influence of initial mixing temperature of mixer, open mill temperature and standing time after mixing on the process of waste rubber regeneration. The degree of damage of the crosslinked grid was characterized by the change of the swelling degree of the used rubber before and after regeneration, the physical and mechanical properties of vulcanizates prepared by reclaimed rubber were measured to characterize the regeneration effect The apparent morphology of reclaimed rubber was observed by electron microscopy. The experimental results show that on the control of the temperature of the initial mixing process is 75 ℃, the standing time after mixing is 80min, using the temperature of 40℃ open mill running 42min, we could get perfect recycled rubber, the surface of the reclaimed rubber has continuous uniform

• WANG Chuan-sheng,ZHANG Lei,ZHAITian-jian and ZHANG Lu-qi
• Finite Element Simulation Analysis on Mixing Flow Field of Mixer with Different Initial Phase Angle Synchronous Rotor

• 2019 Vol. 66(6): 0471-0474

  [Abstract](9)

  [HTML()]

  [PDF]()

• Abstract:Based on viscoelasticity fluid simulation software POLYFLOW，the mixing flow field of the mixer with different initial phase angle was dynamicly simulated in 3D，the particle motion trajectory was analyzed statistically using particle trajectory tracing method and statistical postprocessing software POLYSTAT，and taking the particle distribution，mean value of tensile length natural logarithmic and average mixing efficiency as characteristic parameters，the flow field was quantitatively analyzed and compared.The results showed that the mixing dispersion effect of the mixer with 0° initial phase angle layout synchronous rotor was the best.

Gomprehensive and Special Review

• Wang Ting,ChenHong,QinKai,JiangYunping and Yumiao
• Research Progress of Conductive Rubber with Carbon-based Conductive Filler

• 2019 Vol. 66(6): 0475-0479

  [Abstract](10)

  [HTML()]

  [PDF]()

• Abstract:The conductive mechanism of conductive rubber(mainly for conductive path，tunnel effect and electric field emission theory) was described.The research advances of application of carbon-based conductive fillers such as carbon black，carbon fiber，carbon nanotube，graphite and graphene in conductive rubber was introduced.Conductive rubber prepared by single or combined use of various carbon conductive fillers can be used to prepare antistatic material，electromagnetic shielding material，microwave absorbing material，high voltage cable, optoelectronic device and molecular wire，etc.

国内外动态

• 赵敏
• 一种工业设备电缆护套用氯磺化聚乙烯橡胶材料

• 2019 Vol. 66(6): 0412-0412

  [Abstract](8)

  [HTML()]

  [PDF]()

• Abstract:

• 利
• 米其林自密封轮胎成为福特探险者原配胎

• 2019 Vol. 66(6): 0445-0445

  [Abstract](8)

  [HTML()]

  [PDF]()

• Abstract:

• 利
• Giti推出42个规格的GT Radial MaxTour LX轮胎

• 2019 Vol. 66(6): 0460-0460

  [Abstract](11)

  [HTML()]

  [PDF]()

• Abstract:

• 赵敏
• 一种载重轮胎的橡胶组合物及其应用

• 2019 Vol. 66(6): 0460-0460

  [Abstract](8)

  [HTML()]

  [PDF]()

• Abstract:

• 吴淑华
• 废轮胎回收炭黑市场将高速增长

• 2019 Vol. 66(6): 0465-0465

  [Abstract](10)

  [HTML()]

  [PDF]()

• Abstract:

• 吴淑华
• 朗盛完成橡胶业务出售

• 2019 Vol. 66(6): 0470-0470

  [Abstract](10)

  [HTML()]

  [PDF]()

• Abstract:

• 赵敏
• 利用有机硅低沸水解物制备的硅橡胶及其制备方法

• 2019 Vol. 66(6): 0470-0470

  [Abstract](10)

  [HTML()]

  [PDF]()

• Abstract:

• heyan
• 蒂坦为固特异R14T轮胎系列增加14种规格

• 2019 Vol. 66(6): 0474-0474

  [Abstract](9)

  [HTML()]

  [PDF]()

• Abstract:

• 吴淑华
• 中橡启动印度炭黑项目扩产

• 2019 Vol. 66(6): 0479-0479

  [Abstract](11)

  [HTML()]

  [PDF]()

• Abstract: