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首页> 外文会议>Society of Plastics Engineers Annual Technical Conference 2005(ANTEC 2005) vol.1; 20050501-05; Boston,MA(US) >QUANTIFICATION OF MELTING PROGRESSION DURING TWIN SCREW XTRUSION USING THE PULSE PERTURBATION TECHNIQUE PART Ⅱ: PHYSICS OF MELTING
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QUANTIFICATION OF MELTING PROGRESSION DURING TWIN SCREW XTRUSION USING THE PULSE PERTURBATION TECHNIQUE PART Ⅱ: PHYSICS OF MELTING

机译：利用脉冲摄动技术量化双螺杆挤压过程中的熔化过程Ⅱ：熔化的物理

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摘要

Further analysis of steady state and pulse perturbation monitoring of the melting process in a twin-screw extruder discussed in Part I has been carried out with respect to the physics of melting. This paper examines why the total specific energy changes with operating conditions. New parameters are defined, the differential specific energy, partial deriv P/ partial deriv Q and partial deriv P/ partial deriv N, that can be determined from either monitoring method. It is proposed that the differential specific energy may be used to characterize an extrusion system and applied to the prediction the total specific energy at any rate and screw speed. From pulse and RTD responses, a modified description of the progression of melting based on plug and fluid flow regimes is made using concepts advanced previously. Energy input related to back mixing or mass spreading during melting is discussed.
机译：关于熔融物理学，已经对第一部分中讨论的双螺杆挤出机中的熔融过程的稳态和脉冲扰动监测进行了进一步分析。本文研究了为什么总比能量会随运行条件而变化。定义了新的参数，即微分比能，偏导数P /偏导数Q和偏导数P /偏导数N，可以从任一监视方法确定。建议可以使用微分比能表征挤出系统的特性，并将其用于以任何速率和螺杆速度预测总比能。根据脉冲和RTD响应，使用先前提出的概念对基于塞流和流体流动方式的熔化进程进行了修改描述。讨论了与熔化过程中的反向混合或质量扩散有关的能量输入。

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