超细全硫化粉末丁苯橡胶对胎面胶性能的影响

研究超细全硫化粉末丁苯橡胶（UFPSBR）对天然橡胶（NR）/丁苯橡胶/顺丁橡胶（BR）胎面胶性能的影响。结果表明：与未加UFPSBR的胎面胶相比,加入2～3份UFPSBR的NR/溶聚丁苯橡胶/BR胎面胶拉伸强度略有减小,耐磨性能和抗湿滑性能提高,生热降低;加入1～2份UFPSBR的NR/乳聚丁苯橡胶/BR胎面胶拉伸强度增大,抗湿滑性能略有提高,滚动阻力变化不大,耐磨性能下降。     

TPI／NR全钢子午线轮胎胎面胶性能的研究

探讨反式聚异戊二烯（TPI）部分代替天然橡胶（NR）对全钢子午线轮胎胎面胶性能的影响。结果表明,以15～35份TPI替代NR,胎面胶定伸应力提高,滚动阻力减小,压缩生热降低,耐疲劳性能和耐磨性能改善。     

国产高性能天然橡胶在航空轮胎胎面胶中的应用

研究国产高性能天然橡胶（NR）替代泰国进口NR在航空轮胎胎面胶中的应用。结果表明：国产高性能NR的各项理化性能满足GB/T 8089—2007要求;在航空轮胎胎面胶配方中以国产高性能NR等量替代泰国进口NR,胶料的门尼粘度降低,焦烧时间缩短,硫化速度加快,拉伸强度和拉断伸长率略有提高,耐老化性能稍差,动态生热水平相当。     

环氧化天然橡胶在全钢载重子午线轮胎胎面胶中的应用

研究环氧化天然橡胶（ENR）在全钢载重子午线轮胎胎面胶中的应用。结果表明：用ENR部分取代天然橡胶（NR）,胶料的门尼粘度增大,焦烧时间延长,强伸性能略有下降,抗湿滑性能显著改善,耐磨陛能提高,压缩生热略有升高。     

低滚动阻力全钢载重子午线轮胎胎面胶配方的研究

研究低滚动阻力全钢载重子午线轮胎胎面胶的配方和性能。结果表明：主体材料采用天然橡胶（NR）/顺丁橡胶（BR）/溶聚丁苯橡胶（SSBR）并用,减小炭黑用量,增大高分散性白炭黑用量,胎面胶的混炼工艺和挤出工艺性能优良,耐磨性能明显提高,生热明显降低,抗湿滑性能提高,滚动阻力大幅下降;成品轮胎的耐久性能提升,滚动阻力降低。     

低滞后炭黑DZ-13在载重轮胎胎面胶中的应用

探讨低滞后炭黑DZ-13在载重轮胎胎面胶中的应用。结果表明,采用低滞后炭黑DZ-13部分替代炭黑N234并增大生胶体系NR/BR并用比,可使胎面胶的生热降低,拉伸性能、撕裂强度和回弹性提高,成品轮胎的速度性能显著改善,性能价格比提高。     

高强力再生胶对NR/BR共混胎面胶性能的影响

研究了高强力再生胶对天然橡胶(NR)和顺丁橡胶(BR)共混胎面胶性能的影响。结果表明，使用高强力再生胶后，NR/BR共混胎面胶的生热增加，耐磨性下降，撕裂性能提升；当高强力再生胶的用量为5份时，耐磨性、撕裂性能、生热性能可维持在±10%以内，同时达到降低成本的目的。     

反式1，4-聚异戊二烯在全钢载重子午线轮胎胎面胶中的应用

研究反式1，4-聚异戊二烯（TPI）在全钢载重子午线轮胎胎面胶中的应用。结果表明，胎面胶配方中用20份TPI或充油TPI等量替代NR，对胶料混炼工艺基本无影响，其中充油TPI／NR胶料焦烧时间稍有延长，硫化速率减慢；硫化胶定伸应力提高，滚动阻力降低，耐磨性能、耐屈挠龟裂性能和压缩生热性能获得改善，且湿摩擦因数降幅很小，可使轮胎行驶性能获得较佳平衡。     

不同硫载体对轮胎用NR胶料性能的影响

研究了添加不同载体化合物二辛基多硫代磷酸酯（SDT／S）、二丁基二硫代磷酸锌（TP／S）、二硫代己内酰胺（S／G）、二硫代二码啡啉（M／G）以及SDT／S的用量对轮胎用NR胶料的加工性能、硫化特性、拉伸性能、动态生热和压缩永久变形等性能的影响规律,并与传统硫黄硫化体系进行了比较。结果表明,加入SDT／S和TP／S会缩短门尼焦烧时间,但能提高硫化平坦模量和改善抗硫化返原能力;较低硫化温度（145℃下）,传统硫化体系赋予NR硫化胶较低的拉伸强度和300％定伸应力,提高硫化温度（175℃）,会使加入硫载体的NR硫化胶具有较高的拉伸性能保持率;加入SDT／S和提高其用量,可提高NR胶料的抗硫化返原性能,降低硫化胶的动态生热和改善压缩永久变形性能。     

湿法白炭黑混炼胶在全钢胎面胶料中的应用

研究对比了湿法白炭黑混炼胶与传统白炭黑干法混炼胶对全钢胎面胶料的性能影响。结果表明,在胎面胶料中,湿法白炭黑混炼胶等量替代白炭黑与NR时,可提高硫化胶的拉伸强度、撕裂强度和弹性,降低硫化胶动态生热和压缩生热,提高轮胎耐久性能,降低轮胎的滚动阻力,同时可以缩短混炼时间,降低能量消耗。     

Preparation and characterization of natural rubber/ultrafine full-vulcanized powdered styrene–butadiene rubber blends

In this paper, natural rubber (NR)/ultrafine full-vulcanized styrene–butadiene powdered rubber (UFPSBR) blends were prepared and studied for the first time. Scanning electron microscopy and thermogravimetric analysis were employed to characterize UFPSBR. Equilibrium swelling method was used to determine the crosslink density of NR/UFPSBR vulcanizates. The results on mechanical properties showed that when NR/UFPSBR ratio was 100/5, the formulation exhibited favorable performances compared to pure NR vulcanizates. The heat build-up temperature also decreased after adding UFPSBR into the NR formulation. In dynamic mechanical analysis, in the temperature range of ?10 to ?5 °C, loss factor (tanδ) values of NR/UFPSBR vulcanizates showed an increasing trend over the given temperature range and exhibited a peak value at approximate ?5 °C. This indicates that wet traction and rolling resistance of samples were improved after UFPSBR was added in NR. This research demonstrates that UFPSBR can be incorporated into a conventional NR formula to successfully improve the comprehensive performances and dynamic mechanical properties of NR formula.     

Influence of ultrafine full-vulcanized powdered rubber on NR/SBR blends

In this paper, the use of ultrafine full-vulcanized powdered styrene-butadiene rubber (UFPSBR) in natural rubber/styrene-butadiene rubber was studied. Scanning electron microscopy (SEM) and thermogravimetric analysis (TGA) were employed to characterize UFPSBR. Other testing methods were used to determine the performance of the vulcanizates containing UFPSBR. To analyze the cross-link density of vulcanizates, equilibrium swelling method was used. Dynamic mechanical analysis (DMA) was used to analyze storage modulus (E′) and loss tangent (tanδ). SEM results showed that the average diameter of UFPSBR particles was 10?μm approximately. TGA indicated that the amount of inorganic particles in UFPSBR was about 32?% by weight. The testing results of mechanical properties showed that the compounds containing 5?phr UFPSBR had good comprehensive performance. DMA results showed that, according to the values of tanδ, after UFPSBR was added the wet traction performance of the blends was improved.     

双金属稀土促进剂对丁苯橡胶/天然橡胶胎面胶的影响

通过配位反应制备得到双金属硫化促进剂二乙基二硫代氨基甲酸锌镧配合物(ZnLaDC),在不添加传统活化体系氧化锌(ZnO)/硬脂酸(SA)的情况下,考察了ZnLaDC用量对丁苯橡胶(SBR)/天然橡胶(NR)胎面胶复合材料硫化特性及物理机械性能的影响,并与传统硫化体系二乙基二硫代氨基甲酸锌(ZnDC)/ZnO/SA制备的硫化胶性能进行了对比。结果表明,随着ZnLaDC用量的增加,SBR/NR胎面胶复合材料的硫化特性、压缩疲劳生热性能及耐磨性得到有效提高,当ZnLaDC用量为5份时,复合材料的综合性能最佳。与传统硫化体系ZnDC/ZnO/SA制备的硫化胶相比,采用ZnLaDC制备的硫化胶具有更优异的静态力学性能及耐切割性。     

溶聚丁苯橡胶/白碳黑复合料在高性能胎面胶中的性能研究

本文对充不同环保橡胶油溶聚丁苯橡胶(SSBR)在高性能轮胎胎面胶中的性能进行了研究,特别是SSBR(ZG-SSBR)与同类国产及进口产品在加工行为及物理性能等方面进行了对比。 结果表明,ZG-SSBR具有卓越的加工性能、优越的物理机械性能、较低的滚动阻力、优良的抗湿滑性、在低或高充油量下胎面胶的综合性能不亚于进口同类产品,ZG-SSBR是高性能轮胎胎面胶料的理想材料。     

超细全硫化粉末丁苯橡胶改性沥青路用性能的研究

采用湿法改性工艺制备超细全硫化粉末丁苯橡胶(UFPSBR)改性沥青,并对其路用性能进行研究。结果表明:除5℃延度外,UFPSBR改性沥青的各项性能基本符合相应标准的要求;在UFPSBR改性沥青中,UFPSBR分布比较均匀,形成相对稳定的结构,两相相容性较好,随着UFPSBR用量的增大,UFPSBR在沥青中的分散粒径逐渐增大,甚至出现了轻微聚集现象;加入UFPSBR可以提高沥青的热稳定性,使其粘性和弹性得到明显改善,抵抗外力的能力得到显著提高,同时可以大幅降低噪声。     

SSBR改善胎面胶动态力学性能的研究

考察了不同种类和不同用量的SSBR在轮胎胎面胶中的应用,研究了NR／SSBR硫化橡胶的物理机械性能和动态力学性能。结果表明：天然橡胶与新型溶聚丁苯橡胶SSBR2并用比为70／30时。硫化橡胶具有优异的动态力学性能和较低压缩生热;DMA测试结果表明：随着SSBR2的加入,硫化橡胶0℃时的tanδ值逐渐增大,60℃时的tanδ值减小。实验表明：加入适量SSBR2能够满足胎面胶基本物理性能要求,而且具有较低生热和较好的抗湿滑性。     

Crystallization behavior of nylon-6 confined among ultra-fine full-vulcanized rubber particles

The crystallization behavior of nylon-6 confined in a hybrid of nylon-6 and ultra-fine full-vulcanized powdered rubber was studied. It is found that carboxylic styrene-butadiene ultra-fine full-vulcanized powdered rubber (CSB-UFPR) could behave as a nucleating agent for nylon-6 crystallization, which can increase the crystallization temperature, the onset temperature of crystallization as well as the glass transition temperature of nylon-6 confined in the hybrid of nylon-6 and ultra-fine full-vulcanized powdered rubber. It is also found that nylon-6 molecules confined among CSB-UFPR particles favor the crystalline form of γ than that of α. The crystallization process of γ phase of nylon-6 in nylon-6/CSB-UFPR hybrid is a diffusion-controlled process, and thus it can be accelerated by raising the crystallization temperature or by extending oil into CSB-UFPR. It is expected that these results will benefit the research on crystallization behavior of other constrained geometry polymer, such as ultra-thin film and polymer/clay hybrid, and etc.     

环保型丁苯胶SBR1502E在农业子午线轮胎中的应用

研究环保型丁苯胶SBR1502E在农业子午线轮胎胎面胶和胎体帘布胶中的应用。结果表明：用环保型丁苯胶SBR1502E等量代替丁苯胶SBR1502,胎面胶的挤出性能明显改善,排胶温度降低,压延帘布温度降低,覆胶均匀,成型工艺性能良好,拉伸性能变化不大,门尼粘度明显降低,生热降低,弹性提高,耐磨性能及H抽出性能改善、耐热老化性能变化不大;成品轮胎的物理性能变化不大。     

超细全硫化粉末丁苯橡胶/三元乙丙橡胶共混物的结构与性能

制备了超细全硫化粉末丁苯橡胶(UFPSBR)/三元乙丙橡胶(EPDM)共混物,研究了其硫化特性、相态结构、动态力学性能及物理机械性能。透射电镜观察表明,无论UFPSBR与EPDM共混比如何,UFPSBR粒子始终保持为分散相。当UFPSBR用量为10份(质量)时,它在EPDM中的分散相尺寸为200 nm左右;用量较高时其分散相尺寸较大,存在大量的聚集体。动态力学分析结果显示共混物存在2个玻璃化转变温度,说明共混物存在两相结构。加工性能分析结果表明,UFPSBR粒子在EPDM基质中形成了网络结构,对EPDM基质起到了较好的增强作用,当UFPSBR与EPDM的质量共混比为50/50时,共混物的拉伸强度可达13.4 MPa。UFPSBR对EPDM的硫化特性有明显影响。