钢铁, 2004, 39(10): 20-23.
连铸板坯中心裂纹和三角区裂纹的成因及防止
张富强 1, , 李超 2, , 姜振生 {"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":1,"startPagecode":1},"records":[{"abstractinfo":"通过对5组相同结构不同相对分子质量的由二氨基二苯醚(ODA)和均苯四甲酸二酐(PMDA)在N,N-二甲基乙酰胺(DMAc)体系中聚合而成的均苯型聚酰胺酸——PAA(ODA/PMDA),进行凝胶渗透色谱和特性黏度[η]的测定实验,测定了5组PAA(ODA/PMDA)的Mn和-Mw,并计算其相对分子质量分布:d1 =2.18,d2 =2.37,d3=1.97,d4=2.33,d5=2.42;室温下测定了PAA(ODA/PMDA)在DMAc中的Mark-Houwink方程参数,从而得到DMAc体系均苯型PAA(ODA/PMDA)的Mark-Houwink方程参数K1 =2.34× 10-5,α1=0.6867,K2=1.98×10-7,α2 =0.9691.","authors":[{"authorName":"方雪","id":"c4f36a21-c9b1-4504-99e4-2ce62bc74e0a","originalAuthorName":"方雪"},{"authorName":"苏桂明","id":"af08fcb8-d243-4747-86b7-96f4de95450d","originalAuthorName":"苏桂明"},{"authorName":"姜海健","id":"8adc148f-5d57-4f4b-97b7-23b712bd64b1","originalAuthorName":"姜海健"},{"authorName":"陈明月","id":"fbaf3250-0bd0-4f2b-b3d6-abd9f14770fa","originalAuthorName":"陈明月"},{"authorName":"马宇良","id":"dbb05102-9e9b-4b6b-a11e-8f864f6a8657","originalAuthorName":"马宇良"},{"authorName":"姚立明","id":"5701c21a-ce54-436c-ac03-cf842b05a796","originalAuthorName":"姚立明"},{"authorName":"张晓臣","id":"b911cc52-37d3-4e1a-b2dd-e44aee9443f1","originalAuthorName":"张晓臣"},{"authorName":"张伟君","id":"5483aebd-c8ea-443b-9742-58a3cdf5ad00","originalAuthorName":"张伟君"}],"doi":"","fpage":"137","id":"ee67f9a9-b038-44d5-8f2b-213e24155568","issue":"11","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"08f5184b-67ca-4611-8b58-2ee08d24b7e5","keyword":"凝胶渗透色谱","originalKeyword":"凝胶渗透色谱"},{"id":"2d835d32-db7e-45c8-b2b0-8ea10298530d","keyword":"聚酰胺酸","originalKeyword":"聚酰胺酸"},{"id":"beabee16-7d63-4320-9ca7-2a1d661b1849","keyword":"Mark-Houwink方程参数","originalKeyword":"Mark-Houwink方程参数"}],"language":"zh","publisherId":"gfzclkxygc201511027","title":"N,N-二甲基乙酰胺体系均苯型聚酰胺酸的Mark-Houwink方程参数测定","volume":"31","year":"2015"},{"abstractinfo":"采用凝胶渗透色谱(GPC)法测定了二苯酮四酸二酐与二氨基二苯醚合成的聚酰胺酸的分子量,计算其分子量分布,绘制了两条不同的标准曲线,比较其对聚酰胺酸分子量大小的影响.通过热重分析方法测试了由不同分子量聚酰胺酸合成的聚酰亚胺薄膜的热稳定性.结果表明:聚合物分子量不会随着标准曲线选取样品分子量的不同而出现较大的差异,分子量均处于相同数量级范围内;在合适范围内,标准曲线的选取不会影响聚合物分子量的测量;由相对分子量大的聚酰胺酸合成的薄膜热失重温度较高,耐热性能较好.","authors":[{"authorName":"苏桂明","id":"67dd931d-395a-45eb-b2d3-02f259606dc1","originalAuthorName":"苏桂明"},{"authorName":"方雪","id":"08d82559-05b2-45f5-a21b-4b8576432e54","originalAuthorName":"方雪"},{"authorName":"姜海健","id":"16f75816-889f-4428-80e2-6f946d304c3c","originalAuthorName":"姜海健"},{"authorName":"马宇良","id":"7e8d74dc-2c2a-479e-8931-d70c0fd43403","originalAuthorName":"马宇良"},{"authorName":"张伟君","id":"d55ac586-349f-468f-ab6c-3cf60bd1cf06","originalAuthorName":"张伟君"},{"authorName":"张晓臣","id":"76b3a775-bce7-4b00-b8d3-f860378379af","originalAuthorName":"张晓臣"}],"doi":"","fpage":"53","id":"d9b0cdac-3019-40c6-8b6b-0ffae7521d7b","issue":"9","journal":{"abbrevTitle":"JYCL","coverImgSrc":"journal/img/cover/JYCL.jpg","id":"50","issnPpub":"1009-9239","publisherId":"JYCL","title":"绝缘材料"},"keywords":[{"id":"b77604d7-0cca-469a-b1b8-908336a2b11e","keyword":"凝胶渗透色谱(GPC)","originalKeyword":"凝胶渗透色谱(GPC)"},{"id":"d9c2dac6-28c7-412b-a24c-ef4409c7cef9","keyword":"聚酰胺酸","originalKeyword":"聚酰胺酸"},{"id":"9ff4f0d6-c872-4cf1-b171-30433c38de9d","keyword":"分子量","originalKeyword":"分子量"},{"id":"84e47ec6-a8b8-4870-b39b-e616c5f18ea1","keyword":"热稳定性","originalKeyword":"热稳定性"}],"language":"zh","publisherId":"jycltx201509012","title":"GPC法测定二苯酮型聚酰胺酸分子量及其薄膜的热稳定性研究","volume":"","year":"2015"},{"abstractinfo":"","authors":[],"doi":"","fpage":"25","id":"0bf08538-745e-4be6-a77a-e73f8449dda8","issue":"2","journal":{"abbrevTitle":"SHJS","coverImgSrc":"journal/img/cover/SHJS.jpg","id":"59","issnPpub":"1001-7208","publisherId":"SHJS","title":"上海金属"},"keywords":[{"id":"109e7d2e-ad21-4dae-bd81-f25b506d6827","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"shjs200402018","title":"新日铁君津厂4号高炉重新点火","volume":"26","year":"2004"},{"abstractinfo":"","authors":[{"authorName":"崔红","id":"15e3f532-3724-445f-9e18-5342678c1a44","originalAuthorName":"崔红"},{"authorName":"肖志超","id":"9c8a5db7-68d1-4844-85b9-a33341e5d258","originalAuthorName":"肖志超"}],"doi":"10.3969/j.issn.1007-8827.2004.03.014","fpage":"239","id":"b9219767-2bea-4cc0-bea2-0829bcae187d","issue":"3","journal":{"abbrevTitle":"XXTCL","coverImgSrc":"journal/img/cover/XXTCL.jpg","id":"70","issnPpub":"1007-8827","publisherId":"XXTCL","title":"新型炭材料"},"keywords":[{"id":"a4c6240f-f26b-44ea-aa78-1605d33acf79","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"xxtcl200403014","title":"苏君明高工和他的研究活动","volume":"19","year":"2004"},{"abstractinfo":"化学镀ＮｉＣＯＢ合金对人造金刚石抗氧化的影响关长斌，周振君，于金库（燕山大学秦皇岛０６６００４）人造金刚石由石墨十触媒合金在高温超高压下合成，因此是一种亚稳相，耐热性差。在空气中加热到７００℃以上就会明显氧化和石墨化，使强度降低，影响应用。如制作磨具时，使热压烧结温度和焊接温度都受到限制。为了提高人造金刚石的氧化性能，目前国内外都采用镀单一的金属层，如镀Ｎｉ，Ｃｕ或Ｔｉ等［１～３］，但效果均?...","authors":[{"authorName":"关长斌","id":"9aa13649-b8a2-48fd-8541-f19f697a03f1","originalAuthorName":"关长斌"},{"authorName":"周振君","id":"f08578fe-084a-4c02-a2f8-5a8123e54014","originalAuthorName":"周振君"},{"authorName":"于金库","id":"a8aa701e-339c-4b56-8a86-b40d7ad51e32","originalAuthorName":"于金库"}],"categoryName":"|","doi":"","fpage":"149","id":"38ac984b-65cc-4c5c-bcbe-24da196367d7","issue":"2","journal":{"abbrevTitle":"ZGFSYFHXB","coverImgSrc":"journal/img/cover/中国腐蚀封面19-3期-01.jpg","id":"81","issnPpub":"1005-4537","publisherId":"ZGFSYFHXB","title":"中国腐蚀与防护学报"},"keywords":[{"id":"18fc8667-d3b6-4088-9c7d-c7b364df83fe","keyword":"null","originalKeyword":"null"},{"id":"f01a9329-1ce0-4a44-a262-306f2935c55a","keyword":" Synthetic diamond","originalKeyword":" Synthetic diamond"},{"id":"06113317-82f1-4b2d-a460-d025589be6e4","keyword":" Resistance to oxidation","originalKeyword":" Resistance to oxidation"}],"language":"zh","publisherId":"1005-4537_1996_2_3","title":"化学镀NiCOB合金对人造金刚石抗氧化的影响","volume":"16","year":"1996"},{"abstractinfo":"建立了猪组织中9种β-兴奋剂(克伦特罗、莱克多巴胺、沙丁胺醇、利托君、特布他林、班布特罗、妥布特罗、西马特罗和异舒普林)多残留的液相色谱-四极杆/线性离子阱串联质谱(QTrap LC-MS/MS)检测方法.样品经β-葡萄糖醛苷酶/芳基硫酸酯酶酶解提取,液液萃取净化,以乙腈-甲酸水溶液为流动相,经C18柱分离后用QTrap LC-MS/MS进行多反应监测(MRM)、信息相关采集(IDA)、增强子离子扫描(EPI)和谱库检索分析.9种β-兴奋剂的线性范围为0.1 ～ 50.0 μg/L,线性关系良好(r＞0.99)；样品中9种目标物在0.5、1.0和5.0μg/kg添加水平下的回收率为72.0％ ～ 95.1％,相对标准偏差为3.1％～12.1％；方法检出限为0.1～ 0.2 μg/kg.实际样品检测结果表明,本方法可实现猪组织样本中β-兴奋剂残留量的灵敏、准确的定性和定量分析.","authors":[{"authorName":"蔡勤仁","id":"3bb9614a-5bb3-4797-b490-32daa808c657","originalAuthorName":"蔡勤仁"},{"authorName":"吴洁珊","id":"5d893c55-55e8-49d6-8837-b650f3895097","originalAuthorName":"吴洁珊"},{"authorName":"钱振杰","id":"0314722f-d0d8-4238-a04d-66e4f2b49164","originalAuthorName":"钱振杰"},{"authorName":"彭玉芬","id":"4e4715ea-b582-4755-9572-53c7d73ce4e9","originalAuthorName":"彭玉芬"},{"authorName":"蔡杰","id":"618170c8-6f67-4bb2-a2b5-8bb74566c0fc","originalAuthorName":"蔡杰"},{"authorName":"杜志峰","id":"6c5e21b7-6c1a-4596-8bbf-11c772f21436","originalAuthorName":"杜志峰"}],"doi":"10.3724/SP.J.1123.2012.11004","fpage":"200","id":"cb8ac607-63c2-4133-863d-1fd3a48d5e9d","issue":"3","journal":{"abbrevTitle":"SP","coverImgSrc":"journal/img/cover/SP.jpg","id":"58","issnPpub":"1000-8713","publisherId":"SP","title":"色谱 "},"keywords":[{"id":"36569350-e735-4387-8142-5f166a12d7b5","keyword":"液相色谱-串联质谱","originalKeyword":"液相色谱-串联质谱"},{"id":"8d88a1ee-9513-436b-8388-186eb6430c9c","keyword":"谱库","originalKeyword":"谱库"},{"id":"18aaa1b6-024b-4322-a574-77c252e144e2","keyword":"β-兴奋剂","originalKeyword":"β-兴奋剂"},{"id":"d9643ca5-2ac8-4bad-b986-e13ab9672b9e","keyword":"猪组织","originalKeyword":"猪组织"}],"language":"zh","publisherId":"sp201303004","title":"液相色谱-串联质谱结合谱库检索测定猪组织中的9种β-兴奋剂残留量","volume":"31","year":"2013"}],"totalpage":1,"totalrecord":6}