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研究有机蒙脱土(OMMT)和纳米陶土两种粘土在全钢载重子午线轮胎气密层胶和胎圈护胶中的应用。结果表明:在气密层胶配方中采用粘土替代部分炭黑N660,胶料的门尼粘度减小,门尼焦烧时间延长,其中含OMMT的胶料t90缩短,物理性能下降,加入偶联剂Si69后压缩疲劳温升显著降低,含纳米陶土的胶料物理性能和气密性变化较小,压缩疲劳温升显著降低;在胎圈护胶配方中采用10份OMMT替代等量炭黑N234,胶料的门尼粘度减小,t90缩短,生热降低,物理性能提高,但拉断永久变形较大,耐磨性能变差。 相似文献
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研究CF炭黑在轮胎气密层胶中的应用。结果表明:70份CF炭黑/炭黑N330并用体系(并用比40/30)代替60份炭黑N660用于轮胎气密层胶中,胶料的物理性能和生热相当,透气性降低,生产成本降低;成品轮胎的使用寿命延长,气压保持性较好。 相似文献
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试验研究混合炭黑G660在斜交轮胎胎圈包布胶配方中的应用。结果表明,混合炭黑G660的补强性能与半补强炭黑相当,较活性碳酸钙好;胎圈包布胶配方中使用20份混合炭黑G660等量替代炭黑N660,胎圈包布胶各项性能满足生产工艺要求和使用性能,配方试样成本降低。 相似文献
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研究与60份炭黑N660相比,15份废旧轮胎裂解炭黑(CBp)/45份炭黑N660并用对轮胎溴化丁基橡胶(BIIR)气密层胶性能的影响。结果表明:与炭黑N660相比,CBp的灰分含量和筛余物含量大,DBP吸收值略小;与60份炭黑N660填充的BIIR胶料相比,15份CBp/45份炭黑N660并用填充的BIIR胶料的硫化特性变化不大,拉断伸长率减小,300%定伸应力和拉伸强度增大,耐热空气老化性能无明显变化,气密性相当,即采用15份CBp替代15份炭黑N660的BIIR气密层胶在保证使用性能的前提下,有效降低了生产成本。 相似文献
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介绍具有三角胶缓冲与补强胶片的轮胎结构设计。第1层胎体帘布采用反包设计,第2层胎体帘布采用正包设计,三角胶内外侧分别贴缓冲胶片和补强胶片,且缓冲胶片和补强胶片采用预复合贴合工艺,有效增强了胎圈部位的强度,提升了轮胎的耐久性能。 相似文献
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研究停放温度和停放时间对带束层胶和胎面胶性能的影响。结果表明:随着停放时间的延长,带束层胶和胎面胶的门尼粘度增大,且环境温度越高,增大趋势越明显,门尼焦烧时间缩短,且在较高温环境下,门尼焦烧时间更短;停放时间和停放温度对带束层胶的物理性能几乎没有影响,对胎面胶的定伸应力影响不大,但胎面胶的拉伸强度和拉断伸长率随着停放时间的延长而减小。 相似文献
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Cheng Xiansu Guan Huaimin Su Yingcao Wang Jiafang 《Journal of Inorganic and Organometallic Polymers》2001,11(4):235-245
An inclusion compound of Mo(VI,V,IV) complexes and poly(vinyl alcohol) (PVA) that contains some carbonyl groups was prepared by a photoelectron transfer reaction between PVA and 12-molybdophosphoric acid (PMo12). A dark-blue film was obtained when the aqueous solution of PMo12 and PVA was irradiated with UV light. The film exhibited the characteristic electron spin resonance (ESR) signal of Mo(V). The existence of Mo(VI,V,IV) complexes was supported by XPS analysis of the film. Furthermore, the infrared (IR) and ultraviolet–visible (UV–Vis) spectra of the film showed weak absorption bands at 1710 cm–1 and 300–314 nm that are consistent with carbonyl groups, which presumably are a result of partial oxidation of secondary hydroxyl groups on PVA. Differential scanning calorimetry (DSC) of the dark-blue film exhibited a peak at 220.3°C that is different from PMo12 and PVA. Except for the IR absorption at 1710 cm–1, the wavelengths and shapes of the other IR bands were similar to those of PVA. The UV–Vis spectrum of the film showed a new absorption band at 742–770 nm. In addition, the XRD spectrum of the film, the diffraction angles, and the crystalline sites were different from that in PMo12 or PVA. However, the peak shape was similar to that of PVA. In summary, the DSC, IR, UV–Vis, and XRD data support a Mo(VI,V,IV) complex that is included into the spiral tube structure of PVA, which contains some carbonyl groups. 相似文献
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以肉豆蔻酸异丙酯(IPM)、癸甲溴铵(双十烷基二甲基溴化铵)、1,2-丙二醇和邻苯二甲醛为原料,制备了邻苯二甲醛纳米乳。用透射电镜(TEM)、激光粒度测定仪对其微观形貌进行了表征;通过恒温加速实验考察了其稳定性。结果表明:制备邻苯二甲醛纳米乳的最佳配比为:m(癸甲溴铵)∶m(1,2-丙二醇)=4∶1、m(癸甲溴铵+1,2-丙二醇)∶m(IPM)=9∶1、w(EDTA)=0.05%~1%、w(邻苯二甲醛)=10%;纳米乳在透射电镜下呈球形,粒径分布均匀,平均粒径48.2 nm;恒温加速实验显示其质量稳定,能提高邻苯二甲醛的溶解度,可望用于消毒领域。 相似文献
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以天然淀粉为原料,采用半干法酯化、交联复合工艺制备了具有抗凝血活性、低流度的硫酸酯淀粉钠,解决了硫酸化淀粉严重降解的难题,讨论了交联对产品流度及抗凝血活性的影响。 相似文献