• 表明口模拉伸过程存在应力诱导结晶过程,又存在温度诱导二次重结晶过程。

    It is showing where is either the crystallizing process by the stress introducing or secondary crystallizing process by the temperature introducing.

    youdao

  • 利用口模拉伸工艺制备取向聚乙烯力学性能具有高度热敏感性,材料收缩率很高,且收缩时具有一定的收缩力。

    The mechanical properties of such oriented PE were rather sensitive to the process temperature, and the thermal shrinkage of the material was also high.

    youdao

  • 传统拉伸辊牵伸、静压挤出及柱塞式挤出工艺相比口模牵伸具有明显优越性发展潜力

    Compared with conventional tensile drawing and hydrostatic or ram extrusion, die drawing process has considerable advantages and developing potentials.

    youdao

  • 结果表明不同角度圆锥挤出过程中,熔体收敛流道受到拉伸流变,导致强烈的弹性效应,表现出熔体在不同角度圆锥口模挤出时有不同的挤出胀大比。

    The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.

    youdao

  • 经典理论假设气泡核的形成静态条件发生的,没有反映口模流场中动态因素(拉伸剪切)对气泡成核的影响

    Because classical nucleation theory supposes that bubble formation is occurred under static state, it doesn't reflect the effects of dynamic factors on bubble nucleation, such as shear and elongation.

    youdao

  • 结果表明,圆锥短口模挤出过程中,熔体收敛流道受到拉伸流变,导致强烈的弹性效应,表现为熔体在短口模挤出时显著的挤出胀大

    The result shows that the extensional flowing of the melt occurs in convergent die resulting in intense entrance elastic effect and distinct extrusion swell.

    youdao

  • 结果表明圆锥挤出过程中,熔体收敛流道受到拉伸流变,导致强烈的弹性效应,表现为熔体在短口模挤出时显著的挤出胀大

    The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.

    youdao

  • 结果表明圆锥挤出过程中,熔体收敛流道受到拉伸流变,导致强烈的弹性效应,表现为熔体在短口模挤出时显著的挤出胀大

    The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.

    youdao

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