本文主要研究内容
作者郭瑞元（2019）在《聚苯胺/水性醇酸树脂复合材料的制备及防腐性能》一文中研究指出：我们国家每年由于金属腐蚀花费的经费不少,所以寻求一个经济且有效的防腐方法是首当其冲。要保护金属不被外界环境腐蚀,可以在金属表面涂一层保护层,作为一个物理屏障来组织外界腐蚀性介质的侵入。通过许多研究者的努力,先后发现了往涂层中加无机填料、有机填料、防腐添加剂等方法,可是结果都不是很理想。近几年,人们发现聚苯胺在防腐性能方面有着比其他填料更大的优势,所以引起了许多研究者的注意。但是,它自身的结构却成了许多研究者头疼的问题,所以必须对其进行改性后使用,这样才能制备出性能优良的复合防腐涂料。本文通过将水性醇酸树脂（WAR）与聚苯胺（PANI）进行接枝来改善两者之间的相容性,促进PANI在WAR中的分散性。通过将PANI化学结合到WAR中,也改善了长期抗腐蚀性能。以本征态PANI、溴代烷烃、氢化钠（NaH）为原料,制备了N-烷基化PANI,并将改性的PANI与水性醇酸树脂进行复合制备了PANI/WAR环保型复合防腐涂料。具体内容如下:（1）以苯胺（An）和对苯二胺（PDA）作为单体的氧化共聚的方法来制备改性的PANI二聚体,然后将PANI与WAR进行接枝共聚得到聚苯胺接枝水性醇酸树脂（WAR-PANI）。通过FT-IR和TEM可以看出,PANI长链成功接枝到了醇酸树脂。极化和EIS结果表明WAR-PANI的防腐性能远高于聚苯胺共混水性醇酸树脂（WAR/PANI）和WAR。当甲基丙烯酸缩水甘油酯（GMA）含量为2.67%时,WAR-PANI显示最佳性能。腐蚀密度降至9.66×10-11A·cm2,阻抗模量和涂层电阻分别增加到1.29×107和1.57×107A·cm2。WAR-PANI比WAR和WAR/PANI有更高的防腐蚀效果,是因为PANI与WAR上的环氧基之间的相互作用形成了一层致密的保护膜。通过对漆膜在3.5 wt%NaCl溶液中浸泡不同时间的SEM图片的分析,更加较直观的看出腐蚀前后复合涂料表面腐蚀情况的变化,WAR-PANI的表面形态与WAR和WAR/PANI相比腐蚀性小,而且当GMA含量为2.67%时效果最佳,进一步证明了WAR-PANI的防腐性能较好。（2）以本征态PANI、溴代烷烃(BrCnH2nBr)、氢化钠（NaH）为原料,制备了N-烷基化PANI,并对于PANI与BrCnH2nBr的质量比、反应时间、反应温度以及烷基链长对PANI改性的影响进行了讨论。由此得出改性PANI的最佳条件为溴代烷烃碳原子数为12,PANI与BrC12H24Br的质量比为1:2,反应的温度为40℃,反应的时间为16 h,此时聚合物性能最好。对聚合物的结构通过FT-IR、UV-Vis、XRD和EA进行表征发现PANI分子链中有烷基侧链的存在。通过对一溴代烷烃改性聚苯胺(PANI-BrC12H25)和二溴代烷烃改性聚苯胺(PANI-BrC12H24Br)在不同溶剂中的溶解性的研究表明一溴代十二烷改性聚苯胺（PANI-12Br（I））和二溴代十二烷改性聚苯胺（PANI-12Br（II））比PANI在有机溶剂中有良好的溶解性,而且PANI-12Br（II）比PANI-12Br（I）在有机溶剂中的溶解性要好。PANI-12Br（I）和PANI-12Br（II）比PANI的热稳定性差,而且PANI-12Br（II）比PANi-12Br（I）的热稳定性差,再次说明PANI-12Br（II）比PANI-12Br（I）的烷基化程度高。通过SEM表征改性前后PANI的结构。实验表明:烷基化后的PANI结构变得致密,PANI-12Br（II）比PANI-12Br（I）结构更为致密。（3）将溴代烷烃改性的PANI-12Br（I）、PANI-12Br（II）和WAR共混制得WAR/PANI-12Br（I）、WAR/PANI-12Br（II）复合乳液。对WAR、WAR/PANI-12Br（I）、WAR/PANI-12Br（II）复合涂层的性能进行了对比,并讨论了不同PANI-12Br（II）用量对WAR/PANI-12Br（II）复合涂层性能的影响。通过对WAR、WAR/PANI-12Br（I）、WAR/PANI-12Br（II）复合乳液稳定性分析,发现加入聚苯胺后醇酸树脂乳液分散稳定指数（TSI）值降低,表明乳液的稳定性得到改善,而且WAR/PANI-12Br（II）比WAR/PANI-12Br（I）稳定性要好。通过对WAR、WAR/PANI-12Br（I）、WAR/PANI-12Br（II）复合乳液胶膜吸水率的测试,结果表明PANI的存在导致水性醇酸树脂的吸水量大大降低,WAR/PANI-12Br（II）比WAR/PANI-12Br（I）有更好的耐水性。极化和EIS结果表明PANI的加入可以改善涂层的防腐性能,而且WAR/PANI-12Br（II）比WAR/PANI-12Br（I）有更高的阻抗（5.12×109Ω·cm2）、腐蚀电压（-0.290 V）和最低的腐蚀电流密度（9.55E-9 A·cm2）,说明了WAR/PANI-12Br（II）比WAR/PANI-12Br（I）防腐效果好。通过对不同PANI-12Br（II）含量的WAR/PANI-12Br（II）复合乳液分散稳定指数（TSI）曲线,发现当PANI-12Br（II）含量为0.3%时乳液稳定性最好;通过对不同PANI-12Br（II）含量的WAR/PANI-12Br（II）胶膜的吸水率的分析,当PANI-12Br（II）含量为0.3%时,聚合物吸水率最低;通过对不同PANI-12Br（II）含量的WAR/PANI-12Br（II）涂层的力学性能和电化学性能分析,发现当PANI-12Br（II）含量为0.3%时,涂层的附着力最好,复合乳液的防腐效果最好,阻抗值达到了1.37×1011Ω·cm2。通过对不同腐蚀时间WAR/PANI-12Br（II）-0.3%的电化学的分析,更加较直观的看出腐蚀前后复合涂料腐蚀情况的变化,即使在浸泡了3.5 wt%NaCl溶液480 h之后,WAR/PANI-12Br（II）-0.3%的阻抗值依然很高(1.37×1010Ω·cm2)进一步证明了WAR/PANI-12Br（II）的防腐性能较好。
Abstract
wo men guo jia mei nian you yu jin shu fu shi hua fei de jing fei bu shao ,suo yi xun qiu yi ge jing ji ju you xiao de fang fu fang fa shi shou dang ji chong 。yao bao hu jin shu bu bei wai jie huan jing fu shi ,ke yi zai jin shu biao mian tu yi ceng bao hu ceng ,zuo wei yi ge wu li bing zhang lai zu zhi wai jie fu shi xing jie zhi de qin ru 。tong guo hu duo yan jiu zhe de nu li ,xian hou fa xian le wang tu ceng zhong jia mo ji tian liao 、you ji tian liao 、fang fu tian jia ji deng fang fa ,ke shi jie guo dou bu shi hen li xiang 。jin ji nian ,ren men fa xian ju ben an zai fang fu xing neng fang mian you zhao bi ji ta tian liao geng da de you shi ,suo yi yin qi le hu duo yan jiu zhe de zhu yi 。dan shi ,ta zi shen de jie gou que cheng le hu duo yan jiu zhe tou teng de wen ti ,suo yi bi xu dui ji jin hang gai xing hou shi yong ,zhe yang cai neng zhi bei chu xing neng you liang de fu ge fang fu tu liao 。ben wen tong guo jiang shui xing chun suan shu zhi （WAR）yu ju ben an （PANI）jin hang jie zhi lai gai shan liang zhe zhi jian de xiang rong xing ,cu jin PANIzai WARzhong de fen san xing 。tong guo jiang PANIhua xue jie ge dao WARzhong ,ye gai shan le chang ji kang fu shi xing neng 。yi ben zheng tai PANI、xiu dai wan ting 、qing hua na （NaH）wei yuan liao ,zhi bei le N-wan ji hua PANI,bing jiang gai xing de PANIyu shui xing chun suan shu zhi jin hang fu ge zhi bei le PANI/WARhuan bao xing fu ge fang fu tu liao 。ju ti nei rong ru xia :（1）yi ben an （An）he dui ben er an （PDA）zuo wei chan ti de yang hua gong ju de fang fa lai zhi bei gai xing de PANIer ju ti ,ran hou jiang PANIyu WARjin hang jie zhi gong ju de dao ju ben an jie zhi shui xing chun suan shu zhi （WAR-PANI）。tong guo FT-IRhe TEMke yi kan chu ,PANIchang lian cheng gong jie zhi dao le chun suan shu zhi 。ji hua he EISjie guo biao ming WAR-PANIde fang fu xing neng yuan gao yu ju ben an gong hun shui xing chun suan shu zhi （WAR/PANI）he WAR。dang jia ji bing xi suan su shui gan you zhi （GMA）han liang wei 2.67%shi ,WAR-PANIxian shi zui jia xing neng 。fu shi mi du jiang zhi 9.66×10-11A·cm2,zu kang mo liang he tu ceng dian zu fen bie zeng jia dao 1.29×107he 1.57×107A·cm2。WAR-PANIbi WARhe WAR/PANIyou geng gao de fang fu shi xiao guo ,shi yin wei PANIyu WARshang de huan yang ji zhi jian de xiang hu zuo yong xing cheng le yi ceng zhi mi de bao hu mo 。tong guo dui qi mo zai 3.5 wt%NaClrong ye zhong jin pao bu tong shi jian de SEMtu pian de fen xi ,geng jia jiao zhi guan de kan chu fu shi qian hou fu ge tu liao biao mian fu shi qing kuang de bian hua ,WAR-PANIde biao mian xing tai yu WARhe WAR/PANIxiang bi fu shi xing xiao ,er ju dang GMAhan liang wei 2.67%shi xiao guo zui jia ,jin yi bu zheng ming le WAR-PANIde fang fu xing neng jiao hao 。（2）yi ben zheng tai PANI、xiu dai wan ting (BrCnH2nBr)、qing hua na （NaH）wei yuan liao ,zhi bei le N-wan ji hua PANI,bing dui yu PANIyu BrCnH2nBrde zhi liang bi 、fan ying shi jian 、fan ying wen du yi ji wan ji lian chang dui PANIgai xing de ying xiang jin hang le tao lun 。you ci de chu gai xing PANIde zui jia tiao jian wei xiu dai wan ting tan yuan zi shu wei 12,PANIyu BrC12H24Brde zhi liang bi wei 1:2,fan ying de wen du wei 40℃,fan ying de shi jian wei 16 h,ci shi ju ge wu xing neng zui hao 。dui ju ge wu de jie gou tong guo FT-IR、UV-Vis、XRDhe EAjin hang biao zheng fa xian PANIfen zi lian zhong you wan ji ce lian de cun zai 。tong guo dui yi xiu dai wan ting gai xing ju ben an (PANI-BrC12H25)he er xiu dai wan ting gai xing ju ben an (PANI-BrC12H24Br)zai bu tong rong ji zhong de rong jie xing de yan jiu biao ming yi xiu dai shi er wan gai xing ju ben an （PANI-12Br（I））he er xiu dai shi er wan gai xing ju ben an （PANI-12Br（II））bi PANIzai you ji rong ji zhong you liang hao de rong jie xing ,er ju PANI-12Br（II）bi PANI-12Br（I）zai you ji rong ji zhong de rong jie xing yao hao 。PANI-12Br（I）he PANI-12Br（II）bi PANIde re wen ding xing cha ,er ju PANI-12Br（II）bi PANi-12Br（I）de re wen ding xing cha ,zai ci shui ming PANI-12Br（II）bi PANI-12Br（I）de wan ji hua cheng du gao 。tong guo SEMbiao zheng gai xing qian hou PANIde jie gou 。shi yan biao ming :wan ji hua hou de PANIjie gou bian de zhi mi ,PANI-12Br（II）bi PANI-12Br（I）jie gou geng wei zhi mi 。（3）jiang xiu dai wan ting gai xing de PANI-12Br（I）、PANI-12Br（II）he WARgong hun zhi de WAR/PANI-12Br（I）、WAR/PANI-12Br（II）fu ge ru ye 。dui WAR、WAR/PANI-12Br（I）、WAR/PANI-12Br（II）fu ge tu ceng de xing neng jin hang le dui bi ,bing tao lun le bu tong PANI-12Br（II）yong liang dui WAR/PANI-12Br（II）fu ge tu ceng xing neng de ying xiang 。tong guo dui WAR、WAR/PANI-12Br（I）、WAR/PANI-12Br（II）fu ge ru ye wen ding xing fen xi ,fa xian jia ru ju ben an hou chun suan shu zhi ru ye fen san wen ding zhi shu （TSI）zhi jiang di ,biao ming ru ye de wen ding xing de dao gai shan ,er ju WAR/PANI-12Br（II）bi WAR/PANI-12Br（I）wen ding xing yao hao 。tong guo dui WAR、WAR/PANI-12Br（I）、WAR/PANI-12Br（II）fu ge ru ye jiao mo xi shui lv de ce shi ,jie guo biao ming PANIde cun zai dao zhi shui xing chun suan shu zhi de xi shui liang da da jiang di ,WAR/PANI-12Br（II）bi WAR/PANI-12Br（I）you geng hao de nai shui xing 。ji hua he EISjie guo biao ming PANIde jia ru ke yi gai shan tu ceng de fang fu xing neng ,er ju WAR/PANI-12Br（II）bi WAR/PANI-12Br（I）you geng gao de zu kang （5.12×109Ω·cm2）、fu shi dian ya （-0.290 V）he zui di de fu shi dian liu mi du （9.55E-9 A·cm2）,shui ming le WAR/PANI-12Br（II）bi WAR/PANI-12Br（I）fang fu xiao guo hao 。tong guo dui bu tong PANI-12Br（II）han liang de WAR/PANI-12Br（II）fu ge ru ye fen san wen ding zhi shu （TSI）qu xian ,fa xian dang PANI-12Br（II）han liang wei 0.3%shi ru ye wen ding xing zui hao ;tong guo dui bu tong PANI-12Br（II）han liang de WAR/PANI-12Br（II）jiao mo de xi shui lv de fen xi ,dang PANI-12Br（II）han liang wei 0.3%shi ,ju ge wu xi shui lv zui di ;tong guo dui bu tong PANI-12Br（II）han liang de WAR/PANI-12Br（II）tu ceng de li xue xing neng he dian hua xue xing neng fen xi ,fa xian dang PANI-12Br（II）han liang wei 0.3%shi ,tu ceng de fu zhao li zui hao ,fu ge ru ye de fang fu xiao guo zui hao ,zu kang zhi da dao le 1.37×1011Ω·cm2。tong guo dui bu tong fu shi shi jian WAR/PANI-12Br（II）-0.3%de dian hua xue de fen xi ,geng jia jiao zhi guan de kan chu fu shi qian hou fu ge tu liao fu shi qing kuang de bian hua ,ji shi zai jin pao le 3.5 wt%NaClrong ye 480 hzhi hou ,WAR/PANI-12Br（II）-0.3%de zu kang zhi yi ran hen gao (1.37×1010Ω·cm2)jin yi bu zheng ming le WAR/PANI-12Br（II）de fang fu xing neng jiao hao 。
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论文详细介绍
论文作者分别是来自陕西科技大学的郭瑞元，发表于刊物陕西科技大学2019-07-15论文，是一篇关于溴代烷烃论文,聚苯胺论文,溶解性论文,耐腐蚀性论文,陕西科技大学2019-07-15论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自陕西科技大学2019-07-15论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：溴代烷烃论文; 聚苯胺论文; 溶解性论文; 耐腐蚀性论文; 陕西科技大学2019-07-15论文;