[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fQ90tNTB2dFUDb_hUz110tzEptq3qlIvm6XyfXjTjfUA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-05-18 17:43:42",16182229,[8,9,10,11],"降温体积会缩小,要排出自由体积,这个过程具有时间依赖性","降温时,自由体积要减小,温度越低排出速度越快,松弛时间越短","排出自由体积,材料会发生物理老化,一般认为气体透过率下降2个数量级,被称为老化","聚合物自由体积排出后,阻隔性能会变好",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},217,"ed0884e2c0594a1734f02bc5a7a36ae1","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6c1138637daf984b553d0b4c0789c40d.jpeg","高分子材料测试方法","09acb7cc2ec147cdbfc001cb0963f49b","","关于采用DSC检测聚合物玻璃化转变过程,降温过程出现现象描述不正确的是",[21,32,41,47,56,65,74,83,91,100],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],16182198,[25,26,27,28],"合适的溶剂","色谱柱中凝胶的孔径大小和孔径分布","合适的温度","合适的泵速","在聚合物样品一定的情况下,可以通过选择()来取得最佳的分离度","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],16182199,[36,37,38,39],"粘度法","渗透压法","光散射法","凝胶渗透色谱(GPC)法","( )可以快速、自动测定聚合物的平均分子量和分子量分布",{"answer":42,"createTime":5,"id":43,"options":44,"question":46,"source":30,"type":31},[],16182200,[36,37,38,45],"沸点升高法","下列四种方法中,()可以测定聚合物的质均分子量",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":30,"type":31},[],16182201,[51,52,53,54],"相对分子质量","特性黏数","Huggins参数","流体力学体积","两试样的凝胶渗透色谱的淋出体积相等,则它们的下列参数相等的是()",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":30,"type":31},[],16182202,[60,61,62,63],"数均分子量","重均分子量","第二维利系数","均方末端距","光散射法不可测量的是()",{"answer":66,"createTime":5,"id":67,"options":68,"question":73,"source":30,"type":31},[],16182203,[69,70,71,72],"聚合物的数均分子量","聚合物的质均分子量","聚合物内聚能","聚合物的分子量分布","下列参数中, 不可以用GPC测定的有()",{"answer":75,"createTime":5,"id":76,"options":77,"question":82,"source":30,"type":31},[],16182204,[78,79,80,81],"(C)>(A)>(B)","(C)>(B)>(A)","(A)>(C)>(B)","(B)>(A)>(C)","分别用下列方法测量同一高分子样品, 测得的平均分子量大小顺序为: A、 粘度法: B、 蒸气压渗透法: C、 光散射法",{"answer":84,"createTime":5,"id":85,"options":86,"question":90,"source":30,"type":31},[],16182205,[87,37,88,89],"冰点降低法","蒸汽压下降法","端基滴定法","数均分子量的热力学方法不包括下面哪种?( )",{"answer":92,"createTime":5,"id":93,"options":94,"question":99,"source":30,"type":31},[],16182206,[95,96,97,98],"利用高分子在溶液中流体力学体积进行分级","在对聚合物样品进行分级的同时还可以有效地检测出各级分的分子量和相对含量","凝胶渗透色谱的分离过程是在装有多孔凝胶物质的凝胶色谱柱中进行的","按照淋出的先后顺序,依次收集到分子量从小到大的各个级分,从而达到对聚合物分级的目的","关于凝胶渗透色谱的叙述错误的是( )",{"answer":101,"createTime":5,"id":102,"options":103,"question":108,"source":30,"type":31},[],16182207,[104,105,106,107],"A为线性(因为结果一致)","B为小支化型分子","支化型分子使流出体积变小,相对分子质量偏低","A为支化型分子","用光散射测得PS的A、B两试样的相对分子质量为A=3.9×105,B=2.0×105,用GPC测得A=3.9×105,B=1.93×105,下面叙述不正确的是( )"]