[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f4aw8JS_n3FQRmR65bCxm0EAdwA2WMoinEBcb7hGDqZY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":12,"related":13,"source":17,"type":18},[],"2026-05-27 15:49:37",389348844,[],{"courseId":9,"courseImg":10,"courseName":11},"75653a78f814b62ed765af8821ee636d","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdc2ace364353dc6a67617cf04a146a67.jpg","高分子材料加工原理","简述挤出细流的类型及其形成条件,并指出哪些类型对成型不利?应如何避免?(10分)(课程目标2)",[14,19,24,29,34,40,45,50],{"answer":15,"createTime":5,"id":6,"options":16,"question":12,"source":17,"type":18},[],[],"v1",4,{"answer":20,"createTime":5,"id":21,"options":22,"question":23,"source":17,"type":18},[],389348845,[],"熔体纺丝线上的速度、速度梯度及直径通常怎么分布的(画图)?根据速度梯度的分布情况将纺丝线分成了哪三个区域,初生纤维结构主要在何处形成?(13分)(课程目标1)",{"answer":25,"createTime":5,"id":26,"options":27,"question":28,"source":17,"type":18},[],389348846,[],"根据熔纺冷却过程中的给热系数a* 的解析式 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fadc4c99314f3e3ab08782e7ee05c6675.png\"> ,比较横向和平行吹风的冷却效果及控制纺丝线冷却的因素的变化?(8分)(课程目标4)",{"answer":30,"createTime":5,"id":31,"options":32,"question":33,"source":17,"type":18},[],389348847,[],"初生纤维在后续得拉伸过程中,(1)纤维的取向、结晶、形态结构怎么变化,(2)拉伸使得纤维性能发生怎样的变化?",{"answer":35,"createTime":5,"id":36,"options":37,"question":38,"source":17,"type":39},[],389348848,[],"熔融纺丝中,纺丝线(导丝辊之前)上的轴向力平衡方程式是怎样的?各种力的物理意义是什么?哪些力可以忽略?哪些力是主要的?请画出主要力沿离喷丝板距离增加的变化示意图(16分)(课程 目标4)",6,{"answer":41,"createTime":5,"id":42,"options":43,"question":44,"source":17,"type":39},[],389348849,[],"画出初生纤维在拉伸和热定型(定长、定张力和松弛三种热定型)过程中的形变示意图,指出在三种热定型中纤维的力学松弛现象和形变特点,并且说明在热定型过程中,纤维的结晶度以及取向怎么变化?(15分)(课程目标3)",{"answer":46,"createTime":5,"id":47,"options":48,"question":49,"source":17,"type":39},[],389348850,[],"何为细颈拉伸、冷拉伸、均匀拉伸,请画出各自的拉伸曲线并描述其特征?无定型聚合物、结晶聚合物、冻胶初生纤维在拉伸行为上各属于何种拉伸?(15分)(课程目标4)",{"answer":51,"createTime":5,"id":52,"options":53,"question":54,"source":17,"type":39},[],389348851,[],"当喷丝孔为圆形时,熔纺初生纤维一般为圆形,但是湿法纺丝的得到的纤维一般情况下,表现为非圆形,主要的原因是什么呢?请结合下图(聚丙烯腈纤维成型时溶剂和非溶剂扩散系数与凝固浴中DMF浓度及温度的关系),简单阐述凝固浴温度和凝固浴浓度的变化,怎么影响湿法纺丝的丝条截面形状.(13分) \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa4ea336436a20e25c000873dd18034f1.png\">"]