[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f-wWlKP6F46lHlKekMmyK06_i4VTfjdw6I31SQPmJ1DQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":30,"type":77},[],"2025-09-30 14:38:02",20301481,[8,9,10,11,12],"自由基聚合中的链引发反应是形成单体自由基的反应","BPO含有过氧键,是一个强键","BPO分解的时候是吸热反应","与链增长的速度相比,BPO分解的速率极快","引发剂分解反应是控制整个自由基聚合反应速率的关键步骤",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},139,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","ca1b4e95e9c042309bb724cb3a95690f","模块2合集","下列关于链引发说法正确的是",[22,32,37,42,47,52,57,62,67,72],{"answer":23,"createTime":24,"id":25,"options":26,"question":29,"source":30,"type":31},[],"2023-05-20 16:59:55",20301366,[27,28],"正确","错误","PMMA的聚合体系中,链增长的每一个步骤中,生成的链自由基都有一定的反应活性,能够捕捉单体继续发生增长分子链","v1",3,{"answer":33,"createTime":24,"id":34,"options":35,"question":36,"source":30,"type":31},[],20301367,[27,28],"在本体聚合中,如果散热不好,则可能在制品中产生大量的气泡缺陷",{"answer":38,"createTime":24,"id":39,"options":40,"question":41,"source":30,"type":31},[],20301368,[27,28],"由于本体聚合不容易散热,且反应后期容易发生爆聚,因此最好采取分段聚合的方式进行",{"answer":43,"createTime":24,"id":44,"options":45,"question":46,"source":30,"type":31},[],20301369,[27,28],"本体聚合体系仅有单体和少量(或无)引发剂组成,产物纯净,后处理简单,是比较经济的聚合方法",{"answer":48,"createTime":24,"id":49,"options":50,"question":51,"source":30,"type":31},[],20301370,[27,28],"在PMMA本体聚合中,分子链增长是吸热反应",{"answer":53,"createTime":24,"id":54,"options":55,"question":56,"source":30,"type":31},[],20301371,[27,28],"在PMMA的加聚反应过程中,每一步链增长生成的产物,都是稳定的PMMA长链,不再继续反应",{"answer":58,"createTime":24,"id":59,"options":60,"question":61,"source":30,"type":31},[],20301372,[27,28],"所谓的分段聚合,是指先在较高温度下快速反应至一定程度,停止加热,转移到低温环境中继续慢速反应,这样有利于减慢聚合热的产生,防止爆聚",{"answer":63,"createTime":24,"id":64,"options":65,"question":66,"source":30,"type":31},[],20301373,[27,28],"PMMA聚合中的链引发反应,包含2个步骤,第1步是BPO分解,生成2个初级自由基;第2步是初级自由基与单体发生反应,生成单体自由基",{"answer":68,"createTime":24,"id":69,"options":70,"question":71,"source":30,"type":31},[],20301374,[27,28],"过氧化二苯甲酰可以在受热下发生分解,形成2个初级自由基",{"answer":73,"createTime":24,"id":74,"options":75,"question":76,"source":30,"type":31},[],20301375,[27,28],"PMMA的聚合体系中,只有甲基丙烯酸甲酯和BPO两种原料,BPO在甲基丙烯酸甲酯中,无法溶解,仍然以固体的形式存在",1]