文档介绍：论文题目: 专业: 硕士生: 指导教师: 指导教师: 二月桂酸二丁基锡的合成研究应用化学郑光煜(签王聪(签名李谦定(签摘要本文以中间体四丁基锡和二丁基二***化锡的合成为出发点,通过对原有的格氏法工艺进行改进,并对高压下直接合成二丁基二***化锡进行探索,合成了二月桂酸二丁基锡。其中一步法由首先进行格氏试剂的制备然后再进行烷基化反应制备四丁基锡工艺,改进为格氏试剂的制备同四丁基锡的合成同时进行,保证了格氏试剂的活性,提高了格氏试剂的利用率,从而提高了四丁基锡的产率。在Koeheshkov重分配反应中,在反应过程中引入催化剂,加快了反应速率,并将反应温度降至120℃~130。C,较传统工艺在200 ℃~215℃下反应有了大幅度的提高。高压下的直接法合成工艺中,通过引入可循环利用的催化剂直接合成中间体,简化了生产工艺。热稳定性能测试主要采用刚果红试纸法和热老化箱法。本实验一方面测试了二月桂酸二丁基锡对PVC树脂的热稳定性能,发现它在低含量时对PVC有着较明显的稳定作用,;另一方面为进一步提高其热稳定性能,改善其长期热稳定作用,并改善其初期着***差的缺点,对复配的协同效应进行了研究,发现二月桂酸二丁基锡与硬脂酸钙、硬脂酸钡、二(巯基乙酸)钡、二(巯基乙酸异辛酯)钡、硬脂酸稀土、环氧大豆油、马来酸二丁基锡具有正协同效应,其中以二(巯基乙酸异辛酯)钡的协同效应尤为显著。关键词:热稳定剂二月桂酸二丁基锡合成论文类型:应用研究英文摘要 Subject: Speciality: Name: Instructor: AStudy on thesynthesis ofdibutyl bis(1auroyloxy)tin FIuid Power Transmission Zheng Guangyu(signature WLatnQgtCanodn抽g(ssicsgntsaⅡtuaturere)两II)/".zma LiQiandiⅡg(sigⅡatIIre)盆出豳|菌釜妒 ABSTRACT Following the synthesis intermediates oftetrabutyltin and dichloride dibutyltin,we synthesized dibutylbis(1auroyloxy)tin by the innovation ofGrignard and main innovation oftechnique concludes first isthemanufacture method oftetrabutyltin with one stepdiffering mon method inwhich must use two steps tosynthesis second isthecatalyst has been used intheKocheshkov reaction which can lower thetemperature from 200。C to120"C elerate thereaction final istherecycling catalyst has been use inthedirectmethod withhigh pressure which simpliry thetechnics. The thermal stabilitiesofdibutylbis(1auroyloxy)till are testedthrough cango red test paper,aging experimental resultsshow:the product possesses excellentthermal stability forPVC resin atlower usage Call obtain good thermalstability while added (per hundredresin)ofdibutylbis(1auroyloxy)tin ,thesynergistic effectsoftheproducts have beenstudied toenhance itsthermal shows calcium stearate,barium stearate,barium bis(1so-octylthioglycollate),barium bisthioglycollate,