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Defects of (Tb_(0.3)Dy_(0.7))Fe_(1.95) Alloys with "One-Step" Directional Solidification Process
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作者 李扩社 李红卫 +3 位作者 方以坤 于敦波 杨红川 徐建林 《Journal of Rare Earths》 SCIE EI CAS CSCD 2004年第S1期126-129,共4页
The main types of defect in the (Tb_(0.3)Dy_(0.7))Fe_(1.95) alloys with the 'one-step' directional solidification process were investigated. The effect of the dendrite, grain boundaries, twin boundaries, and R... The main types of defect in the (Tb_(0.3)Dy_(0.7))Fe_(1.95) alloys with the 'one-step' directional solidification process were investigated. The effect of the dendrite, grain boundaries, twin boundaries, and REFe_3 precipitates on the magnetostrictive response of the (Tb_(0.3)Dy_(0.7))Fe_(1.95) alloys was analyzed respectively. The experiment results demonstrate that the dendrite, twin boundaries, and REFe_3 precipitates can be avoided by modifying alloying ingredient, solidification parameters and annealing technique. The dendritic growth front often leads to dendrite sheet, rare earth-rich phase, and twin boundaries. The lower proportion of rare earth, or slow solidification rate, results in the occurrence of REFe_3 precipitatates. It is vital for diminishing the defects to control the undercooling of solid-liquid interface at (2.4~5.1)×10~4 K·s·cm^(-2) so that the crystal grows in cellular growth front. 展开更多
关键词 directional solidification 'one-step' process crystal defects TbDyFe MAGNETOSTRICTION rare earths
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Non-Equilibrium Grain-Boundary Segregation of Phosphorus And the Effective Time in Step Cooling Process
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作者 LIQing-fen LILi LIUEr-bao CUIXiu-fang LIUDong CHENHong-bin 《材料热处理学报》 EI CAS CSCD 北大核心 2004年第5期263-266,共4页
The non-equilibrium grain-boundary segregation of phosphorus in step cooling process in an industrial steel, 12CrlMoV, is studied based on the effective-time-method and compared with that in isothermal holding process... The non-equilibrium grain-boundary segregation of phosphorus in step cooling process in an industrial steel, 12CrlMoV, is studied based on the effective-time-method and compared with that in isothermal holding process. The non-equilibrium grain-boundary segregation concentration of phosphorus was measured with Auger Electron Spectroscopy (AES) and calculated based on the kinetic equations of non-equilibrium grain-boundary segregation. Results show that the calculated result is in good accordance with the experimental observation. 展开更多
关键词 颗粒分离 过冷却过程 有效时间 俄歇电子能谱学
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Simultaneous nitrification and denitrification in step feeding biological nitrogen removal process 被引量:19
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作者 ZHU Gui-bing PENG Yong-zhen +2 位作者 WU Shu-yun WANG Shu-ying XU Shi-wei 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第9期1043-1048,共6页
The simultaneous nitrification and denitrification in step-feeding biological nitrogen removal process were investigated under different influent substrate concentrations and aeration flow rates. Biological occurrence... The simultaneous nitrification and denitrification in step-feeding biological nitrogen removal process were investigated under different influent substrate concentrations and aeration flow rates. Biological occurrence of simultaneous nitrification and denitrification was verified in the aspect of nitrogen mass balance and alkalinity. The experimental results also showed that there was a distinct linear relationship between simultaneous nitrification and denitrification and DO concentration under the conditions of low and high aeration flow rate. In each experimental run the floc sizes of activated sludge were also measured and the results showed that simultaneous nitrification and denitrification could occur with very small size of floc. 展开更多
关键词 biological nitrogen removal dissolved oxygen floc size simultaneous nitrification and denitrification step feeding process
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Theoretical evaluation on nitrogen removal of step-feed anoxic/oxic activated sludge process 被引量:4
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作者 祝贵兵 彭永臻 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第3期263-266,共4页
Evaluation on nitrogen removal of step-feed anoxic/oxic activated sludge process at the standpoint of reaction kinetics and process kinetics was conducted. Theoretical biological nitrogen removal efficiency was deduce... Evaluation on nitrogen removal of step-feed anoxic/oxic activated sludge process at the standpoint of reaction kinetics and process kinetics was conducted. Theoretical biological nitrogen removal efficiency was deduced based on the mass balance of nitrate in the last stage. The comparison of pre-denitrification process and step feed process in the aspects of nitrogen removal efficiency, volume of reactor and building investment was studied, and the results indicated that step-feed anoxic/oxic activated sludge process was superior to pre-denitrification process in these aspects. 展开更多
关键词 step feed process biological nitrogen removal reaction kinetics process kinetics
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A Novel 2-D Signal Processing Scheme for Quasi-Random Step Frequency Signal 被引量:2
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作者 位寅生 刘永坦 许荣庆 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2003年第3期77-80,共4页
Due to the heavy congestion in HF bands, HF radars are restricted to operating within narrow frequency bands. To improve the system bandwidth and avoid heavy interference bands, a quasi-random step frequency signal wi... Due to the heavy congestion in HF bands, HF radars are restricted to operating within narrow frequency bands. To improve the system bandwidth and avoid heavy interference bands, a quasi-random step frequency signal with discontinuous bands is presented. A novel two-dimensional signal processing scheme for this signal is proposed on the basis of delicate signal analysis. Simulation results demonstrate that the scheme could successfully realize the resolutions by decoupling the range-Doppler ambiguity, and effectively suppress the maximal sidelobe. Moreover, the scheme is simple and has good numerical stability. 展开更多
关键词 Random step frequency Sidelobe suppression Signal processing.
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Automatic control strategy for step feed anoxic/aerobic biological nitrogen removal process 被引量:4
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作者 ZHUGui-bing PENGYong-zhen +1 位作者 WUShu-yun WANGShu-ying 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2005年第3期457-459,共3页
Control of sludge age and mixed liquid suspended solids concentration in the activated sludge process is critical for ensuring effective wastewater treatment. A nonlinear dynamic model for a step-feed activated sludge... Control of sludge age and mixed liquid suspended solids concentration in the activated sludge process is critical for ensuring effective wastewater treatment. A nonlinear dynamic model for a step-feed activated sludge process was developed in this study. The system is based on the control of the sludge age and mixed liquor suspended solids in the aerator of last stage by adjusting the sludge recycle and wastage flow rates respectively. The simulation results showed that the sludge age remained nearly constant at a value of 16 d in the variation of the influent characteristics. The mixed liquor suspended solids in the aerator of last stage were also maintained to a desired value of 2500 g/m3 by adjusting wastage flow rates. 展开更多
关键词 wastewater treatment sludge age control modeling and simulation step-feed process
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One-step Synthesis of ε-Caprolactam by the Liquid Phase Nitrosation of Cyclohexane over the Catalysts Containing CH_3COO^- or —COOH 被引量:3
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作者 MAO Li-qiu CHEN Lei +4 位作者 WU Bo-hua YIN Du-lin YOU Kui-yi LIU Ping-le LUO He-an 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2008年第2期246-248,共3页
ε-Caprolactam(CL or CPL) is one of the most important intermediates used in polymer industry for the production of several million tons of nylon-6 every year^[1]. All current commercial processes for the production... ε-Caprolactam(CL or CPL) is one of the most important intermediates used in polymer industry for the production of several million tons of nylon-6 every year^[1]. All current commercial processes for the production of caprolactam are based on either benzene or tolueneI21. Caprolactam is synthesized by the Beckmann rearrangement of cyclohexanone oxime with fuming sulfuric acid or sulfuric acid as the reaction medium, and cyclohexanone oxime is produced by the reaction between cyclohexanone and hydro- xylamine(only one exception is the Toray PNC process). 展开更多
关键词 CYCLOHEXANE Nitrosyl sulfuric acid: ε-Caprolactam one-step process
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A two-step transient liquid phase diffusion bonding process of T91 steels 被引量:4
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作者 Chen Sijie Tang Hengjuan Zhao Pifeng 《China Welding》 EI CAS 2017年第2期52-57,共6页
In this study, a two-step heating process is introduced for transient liquid phase ( TLP) diffusion bonding fo r sound joints with T91 heat resistant steels. At first, a short-time higher temperature heatin... In this study, a two-step heating process is introduced for transient liquid phase ( TLP) diffusion bonding fo r sound joints with T91 heat resistant steels. At first, a short-time higher temperature heating step is addressed to melt the interlayer, followed by the second step to complete isothermal solidification at a low temperature. The most critical feature of our new method is producing a non-planar interface at the T9/ heat resistant steels joint. We propose a transitional liquid phase bonding of T91 heat resistant steels by this approach. Since joint microstructures have been studied, we tested the tensile strength to assess joint mechanical property. The result indicates that the solidified bond may contain a primary solid-solution, similar composition to the parent metal and free from precipitates. Joint tensile strength of the joint is not lower than parent materials. Joint bend's strengths are enhanced due to the higher metal-to-metal junction producing a non-planar bond lines. Nevertheless, the traditional transient liquid phase diffusion bonding produces planar ones. Bonding parameters of new process are 1 260 °C for 0. 5 min and 1 230 °C fo r 4 min. 展开更多
关键词 T91 transient liquid phase diffusion bonding two-step heating process scanning electron microscopy
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Effect of Cu content on microstructures and mechanical properties of ADI treated by twostep austempering process 被引量:1
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作者 Peng-yue Yi Er-jun Guo +2 位作者 Li-ping Wang Yi-cheng Feng Chang-liang Wang 《China Foundry》 SCIE 2019年第3期168-176,共9页
The effect of Cu content on the microstructures and mechanical properties (yield strength, ultimate tensile strength, impact energy, fracture toughness) of austempering ductile iron (ADI) treated by two-step austemper... The effect of Cu content on the microstructures and mechanical properties (yield strength, ultimate tensile strength, impact energy, fracture toughness) of austempering ductile iron (ADI) treated by two-step austempering process were investigated. High Cu content in nodular cast irons leads to a significant volume fraction of retained austenite in the iron after austempering treatment, but the carbon content of austenite decreases with the increasing of Cu content. Moreover, austenitic stability reaches its maximum when the Cu content is 1.4% and then drops rapidly with further increase of Cu. The ultimate tensile strength and yield strength of the ADI firstly increases and then decreases with increasing the Cu content. The elongation keeps constant at 6.5% as the Cu content increases from 0.2% to 1.4%, and then increases rapidly to 10.0% with further increase Cu content to 2.0%. Impact toughness is enhanced with Cu increasing at first, and reaches a maximum 122.9 J at 1.4% Cu, then decreases with the further increase of Cu. The fracture toughness of ADI shows a constant increase with the increase of Cu content. The influencing mechanism of Cu on austempered ductile iron (ADI) can be classified into two aspects. On the one hand, Cu dissolves into the matrix and functions as solid solution strengthening. On the other hand, Cu reduces solubility of C in austenite and contributes more stable retained austenite. 展开更多
关键词 Cu-alloyed ADI TWO-step AUSTEMPERING process mechanical properties AUSTENITE stability
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Analysis and evaluation of effects of processing steps on dimensional tolerance of PIM parts
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作者 LI Yi-min LOU Jia YUE Jian-ling 《Journal of Central South University of Technology》 2005年第z1期33-38,共6页
The factors affecting the dimensional tolerance of powder injection molding (PIM), such as the selection of the powder and binder, the feedstock homogeneity, the feedstock thermal properties, the feedstock rheologic b... The factors affecting the dimensional tolerance of powder injection molding (PIM), such as the selection of the powder and binder, the feedstock homogeneity, the feedstock thermal properties, the feedstock rheologic behavior, the debinding schedule and atmosphere and sintering temperature gradient were discussed. An attempt was made to develop a model to estimate the influence of important variables. The results show that a better understanding of these factors can provide some useful theoretical instructions for large scale production. 展开更多
关键词 powder injection MOLDING DIMENSIONAL TOLERANCE processING step
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基于多线程加速的STEP标准并行解析算法
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作者 毕玉莉 刘嘉政 +2 位作者 杨义军 曾薇 雍俊海 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2023年第12期1842-1850,共9页
当前CAD软件加载大型STEP中性文件时速度慢,其效率瓶颈关键在于其解析算法.针对基于单线程的中性标准解析算法已经远远不能满足当前CAD应用需求的问题,提出了一种基于多线程的分层并行数据解析算法,利用当前主流CPU都采用的多核并行架构... 当前CAD软件加载大型STEP中性文件时速度慢,其效率瓶颈关键在于其解析算法.针对基于单线程的中性标准解析算法已经远远不能满足当前CAD应用需求的问题,提出了一种基于多线程的分层并行数据解析算法,利用当前主流CPU都采用的多核并行架构,大幅提升了STEP文件解析效率.根据模型体中数据的分层特性,算法利用线程池对各层数据解析进行并行加速.文中算法已经在开源几何引擎OpenGE中实现.与OpenCASCADE的对比实验验证了文中算法的有效性.实验结果表明,算法的并行解析程序运行速度相比串行解析程序运行速度提升至原算法的2倍,比OpenCASCADE解析算法快50%. 展开更多
关键词 step标准 数据解析 多线程 并行处理算法
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Influence of a multi-step process on the thickness reduction error of sheet metal in a flexible rolling process
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作者 Yi Li Ming-zhe Li Kai Liu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2019年第1期76-85,共10页
Flexible rolling is a forming process based on thickness reduction, and the precision of thickness reduction is the key factor affecting bending deformation. The major purpose of the present work is to solve the probl... Flexible rolling is a forming process based on thickness reduction, and the precision of thickness reduction is the key factor affecting bending deformation. The major purpose of the present work is to solve the problem of bending deformation error caused by insufficient thickness reduction. Under the condition of different rolling reductions with the same sheet thickness and the same thickness reduction with different sheet thicknesses, the thickness reduction error of sheet metal is analyzed. In addition, the bending deformation of sheet metal under the same conditions is discussed and the influence of the multi-step forming process on the thickness reduction error is studied. The results show that, under the condition of the same sheet thickness, the thickness reduction error increases with increasing rolling reduction because of an increase in work hardening. As rolling reduction increases, the longitudinal bending deformation decreases because of the decrease of the maximum thickness difference. Under the condition with the same thickness reduction, the thickness reduction error increases because of the decrease of the rolling force with increasing sheet thickness. As the sheet thickness increases, the longitudinal bending deformation increases because of the increase in the maximum thickness difference. A larger bending deformation is divided into a number of small bending deformations in a multi-step forming process, avoiding a sharp increase in the degree of work hardening; the thickness reduction error is effectively reduced in the multi-step forming process. Numerical simulation results agree with the results of the forming experiments. 展开更多
关键词 FLEXIBLE rolling convex surface numerical simulation thickness REDUCTION ERROR MULTI-step forming process
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Corrosion resistance of 2195 aluminum alloy treated by multi-step-heating-rate controlled process
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作者 许越 刘玉峰 耿季平 《中国有色金属学会会刊:英文版》 CSCD 2006年第A03期1528-1531,共4页
2195 aluminum-lithium alloy was widely applied in the aviation and aerospace industry, but it is highly susceptible to pitting and intergranular corrosion undergoing sever corrosive circumstance and moisture atmospher... 2195 aluminum-lithium alloy was widely applied in the aviation and aerospace industry, but it is highly susceptible to pitting and intergranular corrosion undergoing sever corrosive circumstance and moisture atmosphere. To solve this problem and consequently to prolong its service life, a multi-step-heating-rate(MSRC) process was carried out. Investigations were carried out to find the effect of the MSRC process on the alloys corrosion resistance. It is found that the MSRC process is more favorable for the uniform phase precipitation by comparing the corrosion resistance of samples treated by traditional heat treatments. The potential difference between phases can be reduced and intergranular corrosion is able to be prohibited efficiently. Besides, the rare earth infiltration is beneficial to improving the corrosion resistance. As heating time increases, the corrosion resistance declines gradually, samples treated by artificial aging and solid solution also exhibit a better corrosion resistance. 展开更多
关键词 金属腐蚀 抗蚀性 热处理 铝合金 结构材料
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Optimization of Biodiesel Production from Waste Vegetable Oil Assisted by Co-Solvent and Microwave Using a Two-Step Process
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作者 Chin-Chiuan Lin Ming-Chien Hsiao 《Journal of Sustainable Bioenergy Systems》 2013年第1期1-6,共6页
The two-step catalyzing process for biodiesel production from waste vegetable oil was assisted by both co-solvent and microwave irradiation. Central composite design (CCD) was employed to optimize the reaction conditi... The two-step catalyzing process for biodiesel production from waste vegetable oil was assisted by both co-solvent and microwave irradiation. Central composite design (CCD) was employed to optimize the reaction conditions. Optimal reaction conditions of the first step were alcohol to oil molar ratio of 9:1, catalyst (H2SO4) amount 1 wt%, reaction temperature 333 K, and reaction time 7.5 minutes;while for the second step, optimal reaction conditions were alcohol to oil molar ratio 12:1, catalyst (NaOH) amount 1 wt%, reaction temperature 333 K, and reaction time 2.0 minutes. The total reaction time was 9.5 min and the conversion rate of fatty acid methyl esters (FAMEs) achieved was 97.4%. The total reaction time was shorter than previous studies. Therefore, the co-solvent and microwave assisted two-step catalyzing process has a potential application in producing biodiesel from waste vegetable oil. 展开更多
关键词 WASTE VEGETABLE OIL CO-SOLVENT MICROWAVE TWO-step process
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刀具磨损状态的多步向前智能预测
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作者 朱锟鹏 黄称意 李俊 《计算机集成制造系统》 EI CSCD 北大核心 2024年第9期3038-3049,共12页
刀具状态的准确监测对于提高切削加工质量和加工效率至关重要。在当前广泛用于刀具磨损状态监测的间接法中,多以单步或短期预测为主,没有实现多步预测,且累积误差较大。高斯过程是间接法中应用较多的一种机器学习方法,然而传统的高斯过... 刀具状态的准确监测对于提高切削加工质量和加工效率至关重要。在当前广泛用于刀具磨损状态监测的间接法中,多以单步或短期预测为主,没有实现多步预测,且累积误差较大。高斯过程是间接法中应用较多的一种机器学习方法,然而传统的高斯过程回归由于模型结构和算法的限制,对刀具磨损预测的精度不高。针对上述不足,提出了改进的自回归递归高斯过程模型对刀具磨损进行多步预测。为了减小预测累积误差,在模型训练中应用了改进的模型更新方式、组合核函数,对样本设置了遗忘因子,在预测中加入了偏差校正方法。研究了各个改进因素对模型的影响并综合所有有利因素,实现了较准确的刀具磨损状态多步预测,在3个测试集上预测误差分别降低了85.68%,20.67%和63.32%。 展开更多
关键词 刀具状态监测 多步预测 高斯过程 递归
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进水分配比对分段进水PN/A工艺脱氮性能影响
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作者 李冬 王凯璐 +2 位作者 祝彦均 吕恒康 张杰 《中国环境科学》 EI CAS CSCD 北大核心 2024年第7期3672-3681,共10页
以预脱碳污水和市政污水作为目标污水,建立了好氧段分段进水的新模式,通过调整进水分配比来优化好氧段C/N,以期实现短程硝化-厌氧氨氧化(PN/A)工艺在实际工况下的稳定运行.采用4组以好氧/缺氧/好氧/缺氧(O/A/O/A)模式运行的序批式反应器... 以预脱碳污水和市政污水作为目标污水,建立了好氧段分段进水的新模式,通过调整进水分配比来优化好氧段C/N,以期实现短程硝化-厌氧氨氧化(PN/A)工艺在实际工况下的稳定运行.采用4组以好氧/缺氧/好氧/缺氧(O/A/O/A)模式运行的序批式反应器(SBR),R1、R2、R3及R4以进水分配比(预脱碳污水:市政污水)分别为1:0、2:1、1:1及1:2的分段进水模式运行.结果表明,R1未能实现PN/A工艺,总氮去除率(NRE)仅为60.2%.随着进水分配比不断下降,R2、R3、R4分别在第34,30及36d实现PN/A工艺,NRE分别达到71.8%、80.3%及74.1%.其中R3系统处理性能最好且最稳定,厌氧氨氧化贡献率达到83.9%.污泥沉降性与粒径最佳.此外,高通量结果显示氨氧化菌(Nitrosomonas)和厌氧氨氧化菌(Candidatus_Kuenenia)丰度分别为2.74%和12.17%,且与好氧异养菌(AHB)形成了良好的协同作用.因此,分段进水模式在进水分配比为1:1时有利于实现稳定的PN/A工艺,此时各功能微生物可得到较好富集与平衡. 展开更多
关键词 分段进水 PN/A工艺 进水分配比 竞争性抑制
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Aspen Plus在脱丁烷塔降压案例中的应用
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作者 廖昌勇 黄国金 +1 位作者 刘贤光 朱俊桦 《石油炼制与化工》 CAS CSCD 北大核心 2024年第9期144-149,共6页
脱丁烷塔聚合物结垢问题是制约乙烯装置长周期运行的主要因素之一。目前新建装置通过降低操作压力在防止脱丁烷塔聚合物结垢方面取得了显著效果。以脱丁烷塔为例,对降压过程的可行性、经济性以及风险点进行分析和总结,利用化工流程模拟... 脱丁烷塔聚合物结垢问题是制约乙烯装置长周期运行的主要因素之一。目前新建装置通过降低操作压力在防止脱丁烷塔聚合物结垢方面取得了显著效果。以脱丁烷塔为例,对降压过程的可行性、经济性以及风险点进行分析和总结,利用化工流程模拟软件Aspen Plus对降压后各项工艺参数进行模拟优化,将优化结果应用于实际生产过程。结果表明,脱丁烷塔的降压极限为350 kPa,降压后全塔温度降低约4℃,塔釜粗裂解汽油中的C_(4)摩尔分数降低0.32百分点,节省低压蒸汽1.3 t h,装置能耗和C_(4)产品损失降低,循环水侧压降、循环水在换热器内的流速和对数传热温差均在合理范围之内。 展开更多
关键词 乙烯 脱丁烷塔 聚合结垢 流程模拟 降压操作
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产品制造和装配过程认证DMAIC方法
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作者 汪泉发 《标准科学》 2024年第9期130-137,共8页
本文以扶梯梯级链制造和装配过程为例,提出了一套基于DMAIC的系统化和结构化过程认证方法,以减少过程变异,确保过程受控和有足够能力。主要方法是先通过流程图、SIPOC、PFMEA等分析,识别关键产品特性(KPC);然后针对各个KPC进行MSA、控... 本文以扶梯梯级链制造和装配过程为例,提出了一套基于DMAIC的系统化和结构化过程认证方法,以减少过程变异,确保过程受控和有足够能力。主要方法是先通过流程图、SIPOC、PFMEA等分析,识别关键产品特性(KPC);然后针对各个KPC进行MSA、控制图、过程能力分析,了解当前过程的能力水平;针对过程能力不达标的KPC,进行根源分析和改进,确保过程能力达到1.33以上;最后更新质量文件,制定过程控制和过程能力定期跟踪计划。 展开更多
关键词 扶梯梯级链 制造和装配过程 过程认证 DMAIC 质量管理
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具有串并行异类工序约束的多柔性车间联合调度
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作者 裴红蕾 《现代制造工程》 CSCD 北大核心 2024年第6期15-21,共7页
为了减少具有串并行异类工序约束多车间联合调度的总延期时间,提出了基于知识牵引遗传算法的调度求解方法。首先,采用扩展工艺树描述串并行异类工序约束,并基于无向图描述机器在多车间的分布;针对染色体初始化和进化过程中的扩展工艺树... 为了减少具有串并行异类工序约束多车间联合调度的总延期时间,提出了基于知识牵引遗传算法的调度求解方法。首先,采用扩展工艺树描述串并行异类工序约束,并基于无向图描述机器在多车间的分布;针对染色体初始化和进化过程中的扩展工艺树约束,定义了紧前工序数和剩余紧前工序数的概念,基于剩余紧前工序数设计了染色体初始化和进化方法;为了提高遗传算法的进化能力,将种群进化能力和最优个体进化能力作为知识,用于牵引算法的进化方式和方向,从而提出了知识牵引遗传算法的求解方法。经实验验证,知识牵引遗传算法调度的总延期时间均值最小,为30.8 h,说明该算法在多车间调度中具有最好的优化性能;且总延期时间盒须图长度最小,说明知识牵引遗传算法的稳定性也较好。 展开更多
关键词 多车间协同 扩展工艺树 紧前工序数 知识牵引 遗传算法
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体育器材领域用二步法硅烷交联改性聚乙烯
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作者 刘燕 《塑料助剂》 CAS 2024年第3期66-68,共3页
通过化学方法与物理方法改善聚乙烯性能,使其拥有更具优势、更优异的力学性能,从而实现在体育器材领域的广泛应用。二步法硅烷交联改性工艺,不仅可促使改性聚乙烯内部呈现三维网状结构,还可有效改进材料综合力学性能。概述了聚乙烯硅烷... 通过化学方法与物理方法改善聚乙烯性能,使其拥有更具优势、更优异的力学性能,从而实现在体育器材领域的广泛应用。二步法硅烷交联改性工艺,不仅可促使改性聚乙烯内部呈现三维网状结构,还可有效改进材料综合力学性能。概述了聚乙烯硅烷交联改性工艺,以二步法工艺为例制备了体育器材领域用改性聚乙烯,进而详细分析了改性聚乙烯在体育器材领域的实际应用。 展开更多
关键词 二步法 硅烷交联改性工艺 改性聚乙烯 制备
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