主题：【讨论】根据数据能判断是尼龙的型号吗

可以大致猜测，但最好借助其他手段确认一下。

原文由 KK-yiqi(zhengkang) 发表:

可以大致猜测，但最好借助其他手段确认一下。

你认为是PA6换是PA66呢，另外其他手段是什么方法呢

PA6熔点225度，PA66熔点255度。
因此,PA6的可能性非常大，可以用XRD对晶形峰。

原文由 KK-yiqi(zhengkang) 发表:
PA6熔点225度，PA66熔点255度。
因此,PA6的可能性非常大，可以用XRD对晶形峰。

一般里面的助剂影响DSC检测吗，客户说这个是PA66,XRD如何测试呢，需要如何制样

看来客户需要准确的数据来被说服,参考一下这篇文章。
Polymer Volume 42, Issue 6, March 2001, Pages 2621–2626
"Solution 13C NMR spectroscopy of polyamide homopolymers (nylons 6, 11, 12, 66, 69, 610 and 612) and several commercial copolymers"
R.D. Davis, W.L. Jarrett, L.J. Mathias,

Abstract

Well-resolved 13C NMR spectra of nylons 6, 11, 12, 66, 69, 610, and 612 dissolved in 4:1 TFE/CDCl3 allowed complete assignment of all major backbone peaks. In addition, several low intensity peaks were identified representing cis amide groups, acid end-groups and amine end-groups. Several peaks associated with the trans amide units in the spectra of each polyamide homopolymer were identified as uniquely characteristic of that polymer. Using these unique peaks, all the polyamides studied could be distinguished from each other as homopolymers and as repeat units in copolymers. For example, three unknown polyamides (supplied by a colleague) were identified as nylon 6, nylon 66 and nylon 610 using only solution 13C NMR spectroscopy. Based on these results, several commercial polymers were examined. Using solution 13C NMR spectroscopy, the copolymer compositions, molecular weights, end-group and cis amide contents, plus the amount of residual ε-caprolactam were all determined. For example, Spiderwire Super Mono® fishing line was found to have a number average molecular weight of 25,333 g/mol and to contain 82 mol% nylon 6 repeat units and 18 mol% nylon 66 repeat units. The residual ε-caprolactam, acid end-group and amine end-group contents were calculated as 1.25, 0.61 and 0.0 mol%, respectively. The cis amide contents were calculated to be 1.2 mol% for nylon 6 units and 0.61 mol% for nylon 66 segments.

原文由 KK-yiqi(zhengkang) 发表:
看来客户需要准确的数据来被说服,参考一下这篇文章。
Polymer Volume 42, Issue 6, March 2001, Pages 2621–2626
"Solution 13C NMR spectroscopy of polyamide homopolymers (nylons 6, 11, 12, 66, 69, 610 and 612) and several commercial copolymers"
R.D. Davis, W.L. Jarrett, L.J. Mathias,

Abstract

Well-resolved 13C NMR spectra of nylons 6, 11, 12, 66, 69, 610, and 612 dissolved in 4:1 TFE/CDCl3 allowed complete assignment of all major backbone peaks. In addition, several low intensity peaks were identified representing cis amide groups, acid end-groups and amine end-groups. Several peaks associated with the trans amide units in the spectra of each polyamide homopolymer were identified as uniquely characteristic of that polymer. Using these unique peaks, all the polyamides studied could be distinguished from each other as homopolymers and as repeat units in copolymers. For example, three unknown polyamides (supplied by a colleague) were identified as nylon 6, nylon 66 and nylon 610 using only solution 13C NMR spectroscopy. Based on these results, several commercial polymers were examined. Using solution 13C NMR spectroscopy, the copolymer compositions, molecular weights, end-group and cis amide contents, plus the amount of residual ε-caprolactam were all determined. For example, Spiderwire Super Mono® fishing line was found to have a number average molecular weight of 25,333 g/mol and to contain 82 mol% nylon 6 repeat units and 18 mol% nylon 66 repeat units. The residual ε-caprolactam, acid end-group and amine end-group contents were calculated as 1.25, 0.61 and 0.0 mol%, respectively. The cis amide contents were calculated to be 1.2 mol% for nylon 6 units and 0.61 mol% for nylon 66 segments.

谢谢啊，换需要NMR,目前换没这个仪器呢

原文由 999youran(999youran) 发表:
谢谢啊，换需要NMR,目前换没这个仪器呢

真想搞清楚，NMR可以查找大专院校的测试中心，北京、上海、武汉肯定有。否则怕没法说服客户。事实上楼主所上图表显示的填料量，不会对于熔点影响产生这么大的影响。

原文由 KK-yiqi(zhengkang) 发表:

原文由 999youran(999youran) 发表:
谢谢啊，换需要NMR,目前换没这个仪器呢

真想搞清楚，NMR可以查找大专院校的测试中心，北京、上海、武汉肯定有。否则怕没法说服客户。事实上楼主所上图表显示的填料量，不会对于熔点影响产生这么大的影响。

好的，为了舒服客户，那换是去本地找一个NMR测试下看看。