[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fx9rE_WUfEVDRrryXfmoQcyraES1ZN0Oyb7cumzIyBx4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":17,"related":18,"source":24,"type":25},[],"2023-05-20 16:59:55",20301375,[8,9],"正确","错误",{"count":11,"courseId":12,"courseImg":13,"courseName":14,"workId":15,"workName":16},139,"a38e1f0ab09aeb966c838e864ee183bc","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdb3a5eb6177bf85ad556cb52c242afa2.jpg","高分子材料科学","ca1b4e95e9c042309bb724cb3a95690f","模块2合集","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",[19,26,31,36,41,46,51,56,61,66],{"answer":20,"createTime":5,"id":21,"options":22,"question":23,"source":24,"type":25},[],20301366,[8,9],"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":27,"createTime":5,"id":28,"options":29,"question":30,"source":24,"type":25},[],20301367,[8,9],"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":32,"createTime":5,"id":33,"options":34,"question":35,"source":24,"type":25},[],20301368,[8,9],"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":37,"createTime":5,"id":38,"options":39,"question":40,"source":24,"type":25},[],20301369,[8,9],"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":42,"createTime":5,"id":43,"options":44,"question":45,"source":24,"type":25},[],20301370,[8,9],"在PMMA本体聚合中,分子链增长是吸热反应",{"answer":47,"createTime":5,"id":48,"options":49,"question":50,"source":24,"type":25},[],20301371,[8,9],"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":52,"createTime":5,"id":53,"options":54,"question":55,"source":24,"type":25},[],20301372,[8,9],"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":57,"createTime":5,"id":58,"options":59,"question":60,"source":24,"type":25},[],20301373,[8,9],"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":62,"createTime":5,"id":63,"options":64,"question":65,"source":24,"type":25},[],20301374,[8,9],"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":67,"createTime":5,"id":6,"options":68,"question":17,"source":24,"type":25},[],[8,9]]