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- Keywords HDPE;LLDPE;extrusion pressure oscillation;extrudate appearance;sharkskin; 挤出压力振荡;挤出物表观;鲨鱼皮;
- Keywords EPDM;rheological properties;double capillary rheometer;sharkskin fracture;extrusion pressure oscillation; 流变性质;双毛细管流变仪;鲨鱼皮畸变;挤出压力振荡;
- extrusion pressure oscillation 挤出压力振荡
- With porous wick in the condenser, the system pressure oscillation was reduced. 冷凝器中多孔芯很好地抑制了系统中的温度压力波动现象。
- In addition, the principle for increasing extrusion pressure and determining way for key parameters on each sub-zone was discussed. 通过深入分析,得出了个分区关键参数的设计准则与确定方法,探讨了提高挤压力的措施,最后通过与实验结果的比较验证了其工程应用价值。
- The extrusion pressure was lower than that of pure EPDM, and its decreasing range was larger with increasing mass fraction of PPA. 加入PPA可以改善EPDM挤出物的外观,且挤出压力低于纯EPDM,PPA质量分数越大,其降低幅度越大。
- The experiments show that amplitude of pressure oscillation can be suppressed by using this way. 试验表明:利用此方法可有效抑制压力振荡的幅值。
- The raw materials,extrusion pressure,pressure holding time and molding temperature during extrusion moulding have great effects on the quality of products. 实验发现:挤压成型过程中原材料、挤压力、保压时间和成型温度对制品的品质影响较大。
- With porous wick condenser, the system pressure oscillation was reduced largely, even more eliminated. 冷凝器中多孔芯很好的抑制了系统中的温度压力波动现象。
- The subcooled boiling states were visualized by Shadowgraph visualization technique and the pressure oscillation was measured by the pressure sensor. 在过冷态超流氦沸腾中,运用可视化方法对不同过冷度下的沸腾过程进行了观测,同时运用压力传感器详细研究了沸腾过程中的压力振荡。
- It was shown that in boosting stage, the pressure oscillation in the inlet and chamber of serial layout ramjet is the typical bulk mode instability. 结果表明,在助推段串连式冲压发动机进气道和补燃室内发生的压强振荡现象属于典型的整体模式不稳定现象;
- Yu Daren, Bao Wen, Xu jiyu.The effect of pressure oscillation on torsional oscillation of turboset shaft system[J].Power Engineering,1995, 15(6): 1-5. [15]于达仁;鲍文;徐基豫.;快关调节阀中蒸汽压力脉动对轴系扭矩的影响[J]
- The results show that the effective strain along cross-section of billet increases slightly, and the unit extrusion pressure increases obviously with the increase of friction coefficient. 结果表明,在坯料尺寸相同的情况下,随着摩擦系数的增大,坯料横截面上的等效应变略有增加,单位挤压力明显增加。
- Combined the extrudate rheology character,the function relationship among the screw extrusion pressure and the screw working parameter,and the screw geometry dimension were established. 确定了物料实现顺利挤出通过挤压机的机头和机嘴部分所需的压力。
- The polluted rock core permeability could be improved by self-resonating cavitating jet with strong pressure oscillation and high cavitation inception characteristics. 摘要可以利用自振空化射流的振动和空化特性来解除或减轻地层堵塞,提高渗透率。
- Moreover,itshould be attached importance that the launch safety is affected by the performance of gun in-terior ballistics,the structure of spray device and pressure oscillation in bore. 此外火炮内弹道性能、喷注装置的结构、膛内压力振荡对发射安全性影响也应引起研究者的重视.
- Choice of extrusion pressure for extruder 挤出机挤出压力的合理选择与节能
- Further experiments were conducted under big subcooled degree in which the dominant frequency increased dramatically, while the amplitude of the pressure oscillation decreased a lot. 同时,进行了大过冷度条件下的实验,实验结果显示,此时的过冷态沸腾的振动特征频率会大幅度地增加,而其振动幅度却明显地减小。
- Brief talks on extrusion pressure of extruder 谈挤出机的挤出压力
- These instabilities manifest themselves in irregular combustion and in pressure oscillations. 这种不稳定现象证明其本身存在不规则燃烧和压力振荡。