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期刊论文 27

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关键词

合成橡胶 2

WTO 1

ZN-1阻尼橡胶材料 1

优化调度 1

割胶制度 1

动力学 1

动力学参数 1

可持续性 1

合成化学 1

合成橡胶,热塑性弹性体,特种橡胶,发展战略 1

回收机理 1

堆场 1

多不饱和脂肪酸 1

多元醇 1

天然橡胶 1

宫内节育器;硅橡胶材料;细胞毒性;动物实验;鼠 1

废弃PET 1

废弃轮胎橡胶 1

微观结构 1

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Evaluation of the compatibility between rubber and asphalt based on molecular dynamics simulation

Fucheng GUO, Jiupeng ZHANG, Jianzhong PEI, Weisi MA, Zhuang HU, Yongsheng GUAN

《结构与土木工程前沿(英文)》 2020年 第14卷 第2期   页码 435-445 doi: 10.1007/s11709-019-0603-x

摘要: Using of rubber asphalt can both promote the recycling of waste tires and improve the performance of asphalt pavement. However, the segregation of rubber asphalt caused by the poor storage stability always appears during its application. Storage stability of asphalt and rubber is related to the compatibility and also influenced by rubber content. In this study, molecular models of different rubbers and chemical fractions of asphalt were built to perform the molecular dynamics simulation. The solubility parameter and binding energy between rubber and asphalt were obtained to evaluate the compatibility between rubber and asphalt as well as the influence of rubber content on compatibility. Results show that all three kinds of rubber are commendably compatible with asphalt, where the compatibility between asphalt and cis-polybutadiene rubber (BR) is the best, followed by styrene-butadiene rubber (SBR), and natural rubber (NR) is the worst. The optimum rubber contents for BR asphalt, SBR asphalt, and NR asphalt were determined as 15%, 15%, and 20%, respectively. In addition, the upper limits of rubber contents were found as between 25% and 30%, between 20% and 25%, and between 25% and 30%, respectively.

关键词: rubber asphalt     compatibility     rubber content     molecular dynamics simulation    

Parametric study on seismic performance of self-centering reinforced concrete column with bottom-placed rubber

《结构与土木工程前沿(英文)》   页码 1145-1162 doi: 10.1007/s11709-023-0945-2

摘要: To realize seismic-resilient reinforced concrete (RC) moment-resisting frame structures, a novel self-centering RC column with a rubber layer placed at the bottom (SRRC column) is proposed herein. For the column, the longitudinal reinforcement dissipates seismic energy, the rubber layer allows the rocking of the column, and the unbonded prestressed tendon enables self-centering capacity. A refined finite element model of the SRRC column is developed, the effectiveness of which is validated based on experimental results. Results show that the SRRC column exhibits stable energy dissipation capacity and no strength degradation; additionally, it can significantly reduce permanent residual deformation and mitigate damage to concrete. Extensive parametric studies pertaining to SRRC columns have been conducted to investigate the critical factors affecting their seismic performance.

关键词: seismic resilience     self-centering     rubber layer     flag-shaped hysteresis loop     parametric study    

Using thermodynamic parameters to study self-healing and interface properties of crumb rubber modified

Dongliang HU, Jianzhong PEI, Rui LI, Jiupeng ZHANG, Yanshun JIA, Zepeng FAN

《结构与土木工程前沿(英文)》 2020年 第14卷 第1期   页码 109-122 doi: 10.1007/s11709-019-0579-6

摘要: The thermodynamic property of asphalt binder is changed by the addition of crumb rubber, which in turn influences the self-healing property as well as the cohesion and adhesion within the asphalt-aggregate system. This study investigated the self-healing and interface properties of crumb rubber modified asphalt (CRMA) using thermodynamic parameters based on the molecular simulation approach. The molecular models of CRMA were built with representative structures of the virgin asphalt and the crumb rubber. The aggregate was represented by SiO and Al O crystals. The self-healing capability was evaluated with the thermodynamic parameter wetting time, work of cohesion and diffusivity. The interface properties were evaluated by characterizing the adhesion capability, the debonding potential and the moisture susceptibility of the asphalt-aggregate interface. The self-healing capability of CRMA is found to decrease as the rubber content increases. The asphalt-Al O interface with higher rubber content has stronger adhesion and moisture stability. But the influence of crumb rubber on the interfacial properties of asphalt-SiO interface has no statistical significance. Comparing with the interfacial properties of the asphalt-SiO interface, the asphalt-Al O interface is found to have a stronger adhesion but a worse moisture susceptibility for its enormous thermodynamic potential for water to displace the asphalt binder.

关键词: crumb rubber modified asphalt     surface free energy     self-healing     interface properties     molecular dynamics simulation    

溶液聚合合成橡胶节能技术和节能型橡胶的开发

曹湘洪,张爱民

《中国工程科学》 2001年 第3卷 第7期   页码 59-63

摘要:

总结了燕山石化溶液聚合合成橡胶节能技术和节能型橡胶的开发情况。通过改进催化体系,提高反应速度,提高反应器的生产能力,并在聚合反应器中采用带刮刀的搅拌器,同时改进聚合、凝聚、溶剂回收的部分工艺及设备,燕山石化顺丁橡胶的能耗不断下降,达到世界先进水平。溶液聚合合成橡胶凝聚过程热泵技术的工业化,使生产每吨胶可节约1MPa的低压蒸汽0.72t。橡胶溶液直接脱挥,聚丁二烯橡胶气相聚合工艺技术开发,溶聚丁苯橡胶(SSBR)、中乙烯基聚丁二烯橡胶、苯乙烯-异戊二烯-丁二烯橡胶(SIBR)、苯乙烯-丁二烯热塑性弹性体(SBS)等新型节能型合成橡胶的技术开发也在进行中,其中SSBR、SBS技术已经工业化。

关键词: 溶液聚合     合成橡胶     节能     节能型橡胶    

Aging properties and aging mechanism of activated waste rubber powder modified asphalt binder based on

《结构与土木工程前沿(英文)》 2023年 第17卷 第4期   页码 625-636 doi: 10.1007/s11709-023-0938-1

摘要: The research and development of high-performance pavement materials has been intensified owing to the demand for long-life pavements. This study is performed to develop a novel pavement material using waste rubber powder, waste lubricating by-product (LBP), and asphalt. Subsequently, the aging properties and aging mechanism of activated waste rubber powder modified asphalt (ARMA) are investigated based on its rheological properties and micro-characterization. The rheological results show that, compared with waste rubber powder modified asphalt (RMA), ARMA offers a higher aging resistance and a longer fatigue life. A comparison and analysis of the rheological aging parameters of ARMA and RMA show that LBP activation diminishes the aging sensitivity of ARMA. The micro-characterization result shows that the aging of ARMA may be caused by the fact that LBP-activated waste rubber powder is more reactive and can form a dense colloidal structure with asphalt. Therefore, the evaporation loss of asphalt light components by heat and the damage to the colloidal structure by oxygen during the aging process are impeded, and the thermal-oxidative aging resistance of ARMA is improved.

关键词: rubber powder modified asphalt     aging     mechanism     rheological     characterization    

Relationship between the number of tapping-induced secondary laticifer lines and rubber yield among

Yueyi CHEN,Xinsheng GAO,Xiaofei ZHANG,Weimin TIAN

《农业科学与工程前沿(英文)》 2016年 第3卷 第4期   页码 363-367 doi: 10.15302/J-FASE-2016122

摘要: The lack of suitable early selection parameters means that traditional rubber breeding for yield is time-consuming and inefficient. Laticifer is a tissue specific for natural rubber biosynthesis and storage in rubber tree. The number of the secondary laticifers in the trunk bark tissues is positively correlated with rubber yield in the matured rubber trees that are regularly tapped. In the present study, the rubber yield from 280 of 4–5 year-old virgin trees from 7 cross combinations was compared with the number of newly differentiated secondary laticifers caused by tapping. Results showed that the number of tapping-induced lines of secondary laticifers varied in different germplasm and was positively related to the rubber yield, indicating this could be used as a suitable parameter for early evaluation of yield potential of rubber trees.

关键词: Hevea brasiliensis     rubber yield breeding     early evaluation     tapping     secondary laticifer differentiation    

Study on the gas permeabilities in styrene-butadiene rubber by molecular dynamics simulation

Hailu LIU, Xuejia DING, Jun YI, Liqun ZHANG, Sizhu WU,

《化学科学与工程前沿(英文)》 2010年 第4卷 第3期   页码 257-262 doi: 10.1007/s11705-009-0270-x

摘要: In this research, molecular dynamics (MD)simulations were used to study the transport properties of small gas molecules in the butadiene-styrene copolymer(SBR). The condensed-phase optimized molecular potentials for atomistic simulation studies (COMPASS) force field was applied. The diffusion coefficients were obtained from MD (NVT ensemble) and the relationship between gas permeability; the chemical structure and free volume of butadiene-styrene copolymer were investigated. The results indicated that the diffusion coefficient of oxygen declined with increasing styrene content. The fraction of free volume (FFV) in butadiene-styrene copolymer was calculated. It was concluded that diffusion coefficient increased as the FFV increases, which is in accordance with the analysis of the small molecular hop through the free volume in polymer matrix. Subsequently, the glass transition temperatures of these copolymers were calculated by MD. The result showed that the glass transition temperature increased with increasing styrene content in polymer.

关键词: diffusion     atomistic simulation     permeability     chemical structure     relationship    

合成橡胶化学及技术进展

武冠英

《中国工程科学》 1999年 第1卷 第3期   页码 79-85

摘要:

文章从合成橡胶的化学基础出发,叙述了合成橡胶工业二十世纪以来的过去、现状,并展望未来。着重讨论了合成化学基础及相应聚合工艺过程的进步这两方面的问题。指出合成橡胶化学基础中活性聚合、可控聚合,包括茂金属催化剂仍为近期的重点;气相聚合工艺将会得到较大的发展;高效聚合釜的研究仍是核心问题;环保问题应更受到重视。

关键词: 合成橡胶     合成化学     活性/控制聚合     气相聚合    

The secondary laticifer differentiation in rubber tree is induced by trichostatin A, an inhibitor of

Shixin ZHANG,Shaohua WU,Weimin TIAN

《农业科学与工程前沿(英文)》 2016年 第3卷 第4期   页码 357-362 doi: 10.15302/J-FASE-2016125

摘要: The secondary laticifer, a specific tissue in the secondary phloem of rubber tree, is differentiated from the vascular cambia. The number of the secondary laticifer in the trunk bark of rubber tree is positively correlated with rubber yield. Although jasmonates have been demonstrated to be crucial in the regulation of secondary laticifer differentiation, the mechanism for the jasmonate-induced secondary laticifer differentiation remains to be elucidated. By using an experimental morphological technique, the present study revealed that trichostatin A (TSA), an inhibitor of histone deacetylation, could induce the secondary laticifer differentiation in a concentration-dependent manner. The results suggest that histone acetylation is essential for the secondary laticifer differentiation in rubber tree.

关键词: Hevea brasiliensis     histone acetylation     laticifer differentiation     trichostatin     vascular cambia    

我国天然橡胶业面临的挑战和发展战略

黄宗道

《中国工程科学》 2001年 第3卷 第2期   页码 28-32

摘要:

自1949年中华人民共和国建立以来,中国的天然橡胶获得了迅速的发展。到1998年橡胶种植面积达到60×104hm2,是1949前的215倍;产量达到45×104t,是以前的2 250倍。致使中国成为世界天然橡胶的主要产胶国之一,植胶面积为世界第四位,产量为第五位。

我国加人世界贸易组织后,低价的天然橡胶将很快进入我国市场,冲击我国的天然橡胶业,我们必须清醒 地了解我们现在所处的地位和情况及时采取对策。文中提出了我国天然橡胶今后的发展战略。

 

关键词: 天然橡胶     WTO     割胶制度    

我国高性能合成橡胶材料发展现状与展望

徐林,曾本忠,王超,张付宝

《中国工程科学》 2020年 第22卷 第5期   页码 128-136 doi: 10.15302/J-SSCAE-2020.05.012

摘要:

合成橡胶材料广泛应用于工业、国防、交通及日常生活的各个方面,高性能和功能化通用合成橡胶是新时代发展所必需的关键先进基础材料。本文结合产业数据调研结果,系统梳理了我国高性能合成橡胶材料的发展现状,总结了我国高性能合成橡胶材料在生产、研发、应用等方面的主要问题。在此基础上提出了我国高性能合成橡胶材料的发展方向与建议,研究认为应重点发展官能化溶聚丁苯橡胶、钕系顺丁橡胶、星型卤化丁基橡胶、功能化热塑性弹性体等高性能和功能化通用合成橡胶,以及氢化丁腈橡胶、热塑性硫化橡胶、高性能硅橡胶、氟醚橡胶等特种橡胶产品,实现材料高端化、过程绿色化、生产智能化。

关键词: 合成橡胶,热塑性弹性体,特种橡胶,发展战略    

基于三参量流变模型的止水橡皮粘弹性研究

刘礼华,熊威,张宏志,张清江

《中国工程科学》 2007年 第9卷 第8期   页码 69-71

摘要:

给出了用三参量流变模型研究止水橡胶粘弹性的基本表达式。结合某高水头闸门 止水材料的粘弹性试验,得到了所采用橡胶材料的流变参数,并指出了其蠕变变形和应力松弛变化的规律,为工程设计提供参考依据。

关键词: 高水头闸门     橡胶     粘弹性     流变    

ZN - 1阻尼橡胶材料的老化机理研究

张凯,马艳,谭云,梅军

《中国工程科学》 2009年 第11卷 第2期   页码 48-52

摘要:

采用加速老化试验方法对ZN-1阻尼橡胶材料的热氧老化性能进行了研究,获得了不同老化温度 及老化时间对硅橡胶泡沫材料力学性能及阻尼性能的影响规律。研究结果表明,随着老化温度的升高及老 化时间的延长, ZN-1的拉伸强度出现了先下降后升高的现象,而扯断伸长率则表现为单调下降的趋势。同 时,还研究了ZN-1阻尼橡胶材料在热氧老化条件下微观结构与性能变化之间的关系,得到了ZN- 1阻尼橡 胶材料的热老化机理。

关键词: ZN-1阻尼橡胶材料     老化性能     微观结构     老化机理    

废弃塑料和废弃胎胶的增值综合回收及其在路面工程中的可持续性实践 Article

徐雄, 冷真, 兰景婷, 王伟, 虞将苗, 白雅伟, Anand Sreerama, 胡静

《工程(英文)》 2021年 第7卷 第6期   页码 857-867 doi: 10.1016/j.eng.2020.08.020

摘要:

废弃聚对苯二甲酸乙二醇酯(PET)饮料瓶等废弃塑料和废弃橡胶轮胎为主要的城市固体废弃物,如不进行合理回收,可能会引发各种环境问题。本研究对这两种废弃物经综合处理后用作沥青路面性能增强改性剂的可行性进行了分析。通过采用三乙烯四胺(TETA)和乙醇胺(EA)对废弃PET进行处理,分析废弃PET经处理获得添加剂的回收机理,同时表征这两种添加剂在改性橡胶沥青过程中的表现。鉴于此,本文采用红外光谱和热分析法对PET添加剂(PET-TETA和PET-EA)进行了研究,进而通过红外光谱、黏度、动态剪切流变和多次应力蠕变恢复等试验对这两种PET添加剂改性的橡胶沥青进行了分析。结果表明:通过化学处理后,废弃PET可被增值回收为功能性添加剂,以提高橡胶沥青的整体性能。本研究所开发的回收方法不仅有助于缓解废弃PET塑料和废弃轮胎的填埋问题,而且可将这些废弃物转变为耐久性路面建设的高附加值新材料。

关键词: 废弃PET     废弃轮胎橡胶     橡胶沥青     回收机理     可持续性    

铰接式自卸车橡胶弹簧悬架系统动力学仿真分析与实验研究

许志华,孙庆鸿,孙蓓蓓,马铸,李锁云,王华君

《中国工程科学》 2005年 第7卷 第9期   页码 34-39

摘要:

以AD250铰接式自卸车橡胶弹簧悬架系统为研究对象,运用虚拟样机技术,在不同载荷和车速下对其进行了动力学仿真分析,仿真结果与实验结果具有很好的一致性,表明所建模型是准确的;分析表明,前悬架橡胶弹簧刚度的非线性特性能满足前悬架在不同载荷下具有等支承频率,从而保持稳定的行使平顺性要求;而后悬架系统在轻载荷下较之重载荷时具有较高的支承频率。分析的结果为橡胶弹簧悬架系统进一步优化设计提供了理论支持。

关键词: 铰接式自卸车     悬架     橡胶弹簧     动力学     非线性    

标题 作者 时间 类型 操作

Evaluation of the compatibility between rubber and asphalt based on molecular dynamics simulation

Fucheng GUO, Jiupeng ZHANG, Jianzhong PEI, Weisi MA, Zhuang HU, Yongsheng GUAN

期刊论文

Parametric study on seismic performance of self-centering reinforced concrete column with bottom-placed rubber

期刊论文

Using thermodynamic parameters to study self-healing and interface properties of crumb rubber modified

Dongliang HU, Jianzhong PEI, Rui LI, Jiupeng ZHANG, Yanshun JIA, Zepeng FAN

期刊论文

溶液聚合合成橡胶节能技术和节能型橡胶的开发

曹湘洪,张爱民

期刊论文

Aging properties and aging mechanism of activated waste rubber powder modified asphalt binder based on

期刊论文

Relationship between the number of tapping-induced secondary laticifer lines and rubber yield among

Yueyi CHEN,Xinsheng GAO,Xiaofei ZHANG,Weimin TIAN

期刊论文

Study on the gas permeabilities in styrene-butadiene rubber by molecular dynamics simulation

Hailu LIU, Xuejia DING, Jun YI, Liqun ZHANG, Sizhu WU,

期刊论文

合成橡胶化学及技术进展

武冠英

期刊论文

The secondary laticifer differentiation in rubber tree is induced by trichostatin A, an inhibitor of

Shixin ZHANG,Shaohua WU,Weimin TIAN

期刊论文

我国天然橡胶业面临的挑战和发展战略

黄宗道

期刊论文

我国高性能合成橡胶材料发展现状与展望

徐林,曾本忠,王超,张付宝

期刊论文

基于三参量流变模型的止水橡皮粘弹性研究

刘礼华,熊威,张宏志,张清江

期刊论文

ZN - 1阻尼橡胶材料的老化机理研究

张凯,马艳,谭云,梅军

期刊论文

废弃塑料和废弃胎胶的增值综合回收及其在路面工程中的可持续性实践

徐雄, 冷真, 兰景婷, 王伟, 虞将苗, 白雅伟, Anand Sreerama, 胡静

期刊论文

铰接式自卸车橡胶弹簧悬架系统动力学仿真分析与实验研究

许志华,孙庆鸿,孙蓓蓓,马铸,李锁云,王华君

期刊论文