EPDM/NR并用胶的复合交联

采用硫黄硫化体系和过氧化物（硫化剂DCP）硫化体系对EPDM／NR并用胶实施复合交联，研究并用比和复合交联体系对胶料的硫化特性、物理性能和耐热老化性能的影响。结果表明，在大部分并用比下，复合交联可以改善胶料的硫化特性；在硫化剂DCP和助交联剂TAIC的用量均为2份、EPDM／NR／ENR并用比为30／68．5／1．5时，并用胶的物理性能优良；以NR为主的并用胶在复合交联时硫化剂DCP和助交联剂TAIC的用量宜取1～2份。     

EPDM配合体系的研究

通过对EPDM品种、硫化体系、补强体系和防护体系的选择，制备强伸性能和耐热空气老化性能均良好的EPDM胶料。优化配方为EPDM（EP33）100，炭黑N22050，氧化锌5，硬脂酸 1，防老剂4010 2，机油 5，硫黄 1．5，促进剂TMTD 1，促进剂M 0．5。     

耐磨橡胶板配方的研究

研究了胶种并用比、硫化体系、炭黑和减磨剂对胶料的耐磨性及力学性能的影响。得到了性能优异的耐磨橡胶板的胶料配方，此耐磨胶板的阿克隆磨耗为0．03cm^3／1．61km。胶料的配方为：NR／BR50／50，S1．0，TT0．5，CZ1．5，RD1．0，ZnO5．0，SA1．0，HAF65。     

硫黄/DCP并用硫化体系对NR胶料抗硫化返原性能的影响

研究硫黄／DCP并用硫化体系对NR胶料抗硫化返原性能、硫化胶物理性能及耐热老化性能的影响，并与相应的平衡硫化体系进行对比。结果表明，在NR硫黄硫化体系中加入1～2份硫化剂DCP，当硫化温度低于160℃时，胶料的抗硫化返原性能与相应的平衡硫化体系胶料相当；随着硫化温度的升高，胶料的抗硫化返原性能下降；对硫化胶的综合物理性能无不良影响，可略提高硫化胶的耐热老化性能。     

GMA原位改性炭黑对EPDM胶料性能的影响

探讨甲基丙烯酸缩水甘油酯(GMA)原位改性炭黑对EPDM胶料硫化特性和硫化胶性能的影响。结果表明，GMA起连接炭黑与橡胶的作用．对胶料的硫化特性影响显．提高了硫化胶的物理性能、粘合性能和常温(30～60℃)下的减震阻尼性能；GMA用量为5份时，EPDM胶料的硫化速度较快，硫化胶的表观交联密度较大，物理性能和粘合性能较好。     

半有效硫化体系在NR内胎配方中的应用

研究了半有效硫化体系在NR内胎配方中的应用效果。试验结果表明，与采用常规硫黄硫化体系的原生产配方相比，采用半有效硫化体系的试验配方胶料的拉伸强度和300％定伸应力有所降低，扯断永久变形和热拉伸变形减小，耐热老化性能和耐疲劳性能提高；挤出的半成品表面光滑，挺性提高，硫化后成品外观良好。     

EPDM/CM耐高热输送带覆盖胶配方探讨

以三元乙丙胶（EPDM）与氯化聚乙烯（CM）并用为主体材料，根据耐高热输送带覆盖胶性能要求，采用机械共混、化学交联工艺制得EPDM／CM耐高热胶带覆盖胶，初步探讨了EPDM／CM共混比例、硫化体系、补强填充剂对覆盖胶性能的影响。实验结果表明，采用EPDM-K512／EPDM-4050／CM-352L的共混比为35／65／30时，既能改善胶料工艺性能，又提高了其拉伸强度、硬度；采用过氧化二异丙苯（DCP）／硫磺（S）／三烯丙基异氰脲酸酯（TAIC）的比例为5．5／0．3／2时，有良好的耐热老化性能和拉伸强度；此外采用中超炭黑（ISAF）／通用炭黑／白炭黑的配比为45／10／5时补强体系的性能最好。     

无内胎轮胎卡扣式气门嘴胶配方的改进

介绍无内胎轮胎卡扣式气门嘴配方设计和生产工艺。生胶以NR为主并用EPDM ,硫化体系采用硫黄硫化体系 ,防护体系采用防老剂 40 10NA/D/RD并用 ,增塑剂采用古马隆树脂 ;采用开姆洛克系列双涂体系粘接工艺 ;采用模压硫化 ,硫化条件为 15 0℃ /15MPa× 10min。气门嘴成品密度较大 ,橡胶体表面光滑、无气泡、无缺陷 ,产品质量稳定 ,各项性能达到了DIN 780 3 0 1— 1983要求     

热解炭黑ECO在NR内胎中的应用

用热解炭黑ECO等量替代半补强炭黑在NR内胎配方中进行试验。结果表明，热解炭黑ECO等量替代半补强炭黑，胶料的门尼粘度基本不变，硫化速率稍微增大，300％定伸应力略有下降，其它物理性能变化不大；混炼和挤出工艺性能良好，成品内胎符合国家标准，且每千克混炼胶可降低成本0．144元。     

水管接头密封圈的研制

主要介绍了水管接头密封圈(水封)的开发研制过程。水封胶料基本配方确定为：EPDM，100；氧化锌，5；硬脂酸，1；促进剂，3．3；硫黄．O．8；硫给予体．1．5；炭黑，65；石腊油，8；防老剂，3。硫化胶性能符合“EN681—1(1998．05)WB”标准要求。此产品已批量生产。     

新型防老剂FHD-60应用试验研究

在NR胶料和NR/SBR/BR并用胶中,采用防老剂A,FHD（40和60）和MDW进行对比试验。结果表明,防老剂FHD-60在热氧老化、天候老化及抗屈挠性方面均有良好效能,是取代防老剂A的理想产品。采用防老剂FDH-60,在力车轮胎内胎、轻型载重轮胎和拖拉机轮胎帘布胶等配方中等量替代防老剂A,在轻型载重轮胎胎面胶配方中替代防老剂RD进行试验,结果表明,试验胶料和成品的性能均达到或超过原配方胶料且符合国家标准,具有良好的经济效益和社会效益。     

炭黑预分散混炼工艺在全钢载重子午线轮胎胎面胶生产中的应用

以预分散炭黑/天然橡胶母胶和一段混炼胶的排胶温度、填充因数和转子转速为因子,采用正交试验设计方法研究炭黑预分散混炼工艺在全钢载重子午线轮胎胎面胶生产中的应用。结果表明,与常规混炼工艺相比,采用炭黑预分散混炼工艺胶料的炭黑分散性提高,物理性能和耐老化性能改善,成品轮胎的耐久性能和高速性能提高,退赔率下降。     

莱茵新Rhenosin TT100在轮胎胎面配方中的应用

研究了莱茵新Rhenosin TT100时NR／BR／SBR胎面胶硫化特性、物理机械性能和发黑与其它配合剂在肢料中的分散性以度耐磨性能的影响。结果表明，谈助剂加入NR／BR／SBR配方中可以明显改善炭黑等配合剂在胶料中的分散性，提高挤出胎面肢断面的致密性，提高了撕裂性能、耐磨性。轮胎实际里程试验表明，采用2份Rhenosin TT100的胎冠肢的轮胎耐磨性优异。     

半钢雪地轮胎胎面胶配方的改进

通过减小BR用量以及改变炭黑品种和用量,改进半钢雪地轮胎胎面胶配方设计。改进后,胶料在保持良好物理性能的基础上,滞后损失增大,抗湿滑性能提高。成品轮胎试验表明,试验配方轮胎的耐久性能良好,高速和强度性能提高,冰雪路面上的制动距离缩短14%~35%。     

Blending of NR/BR/EPDM by reactive processing for tire sidewall applications. III. Assessment of the blend ozone‐ and fatigue‐resistance in comparison with a conventional NR/BR compound

The NR/BR blend compound formulations for tire sidewall applications contain a set of stabilizers added to prevent degradation mainly due to oxygen, ozone, and heat. 6PPD is the most effective and widely used antiozonant in tire compounds, but is a highly staining material causing a surface discoloration of the tire sidewall. Incorporation of 30 phr EPDM into blends of NR/BR improves the ozone resistance to the required level, without the need of 6PPD. The first two parts of this series have described a reactive processing technique applied to enhance the covulcanization and blend homogeneity, together with their characterization. In the present article, the properties of the NR/BR/EPDM blends prepared by both reactive and straight mixing are tested in comparison with those of equivalent conventional NR/BR compounds. The reactive NR/BR/EPDM blend vulcanizates show excellent tensile strength, elongation at break, tear strength, fatigue‐to‐failure, and ozone resistance in both static and dynamic conditions. The properties are equivalent or even superior to those of the conventional NR/BR tire sidewall compounds. The simple straight mixed NR/BR/EPDM blend vulcanizates distinctively possess inferior mechanical properties compared to those of the reactive mix. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2555–2563, 2007     

导电橡胶电阻率稳定性研究

研究了乙炔炭黑和超导炭黑填充天然橡胶（ＮＲ）、丁腈橡胶（ＮＢＲ）和三元乙丙橡胶（ＥＰＤＭ）胶料的基本电性能和物理机械性能。实验结果表明，胶料电阻率在老化后均有不同程度的下降：测试环境温度发生变化时，胶料电阻率随着热能的吸收呈下降趋势。     

Modification of EPDM with Alkylphenol Polysulfide for Use in Tire Sidewalls, 1 – Mechanical Properties

APPS has been used to modify EPDM in order to solve the cure incompatibility and heterogeneous filler distribution of NR/BR/EPDM blends for tire sidewall applications. The physical properties of the NR/BR/APPS‐EPDM blends are compared with an NR/BR/EPDM blend and a conventional NR/BR tire sidewall. It is demonstrated that the application of APPS‐EPDM leads to a significant improvement of the tensile properties, tear strength, and fatigue properties. The properties of the NR/BR/APPS‐EPDM blends are equivalent or even superior to those of conventional NR/BR tire sidewall compounds. The dynamic viscoelastic properties of the NR/BR/APPS‐EPDM blends are not quite comparable with the conventional NR/BR sidewall blend, but still greatly improved, compared to using virgin EPDM.

     

Natural rubber/ethylene propylene diene blends for high insulation iron crossarms

This research studied the composition and behavior of natural rubber (NR) and ethylene propylene diene monomer (EPDM) blends at various carbon black concentrations (0–30 phr) in terms of electrical resistivity, dielectric breakdown voltage testing, and physical properties. The blends having electrical properties suitable for application in high‐insulation iron crossarms were selected for investigation of compatibility and increased physical properties. The effect of the homogenizing agent concentration on improvement of compatibility of blends was studied by scanning electron microscopy, pulsed nuclear magnetic resonance spectroscopy, and rheology techniques. We also examined mechanical properties such as tensile strength, tear strength, elongation at break, and hardness. The NR/EPDM blends filled with a fixed concentration of silica were investigated for ozone resistance. A carbon black content as high as 10 phr is still suitable for the insulation coating material, which can withstand electrical voltage at 10 kVac. Addition of the homogenizing agent at 5 phr can improve the mechanical compatibility of blends, as evidenced by the positive deviation of shear viscosity of the rubber blend, that is, the calculated shear viscosity being higher than that of experimental data. Moreover, the pulsed NMR results indicated that the spin‐spin relaxation (T₂) of all three components of the rubber blend was compressed upon the addition of the homogenizing agent. The ratio of NR/EPDM in the blend to best resist the ozone gas is 80/20 with the addition of silica of 30 phr into the blend. Also, the NR/EPDM filled with silica had a decreased change in thermal and mechanical properties of blends after thermal aging. The synergistic effect of silica content and high NR content (80) in 20 phr EPDM could improve antioxidation by ozone in the absence of a normal antioxidant for natural rubber. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 3401–3416, 2004     

实心轮胎高弹性中间胶的配方研究

对实心轮胎高弹性中间胶的配方进行了研究。生胶选用NR／BR并用，硫化体系选用后效性促进剂和高温稳定的不溶性硫黄，补强体系选用低结构新工艺炭黑，并添加胶易素T－78和增塑剂。胶料的物理性能可以满足实心轮胎的生产要求，试制的成品轮胎缓冲、减震等性能有较大的改善，具有滚动阻力及生热低的优点。     

航空子午线轮胎胎面胶配方的研究

根据航空子午线轮胎胎面胶性能指标要求进行配方设计.试验结果表明,生胶采取NR/BR并用（并用比75/25）,补强体系采取炭黑N110/N234并用,合理选用促进剂、防老剂和加工助剂,硫化胶的物理性能达到设计指标要求,且压缩疲劳温升低,耐磨性能好;成品轮胎胎面胶物理性能良好.