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耐高温环氧树脂合成工艺研究

时间:2020-12-29 20:04来源:毕业论文
最佳工艺条件是三酚基甲烷:ECH=1.:30,采用氢氧化钠的饱和碳酸钠溶液作为环氧化反应催化剂,闭环温度为60℃。在此条件下得到环氧值为0.6285,产率为85.65%的三酚基甲烷的低分子环氧

摘要环氧树脂是一种性能优良、应用广泛的热固性树脂。为了扩展环氧树脂的应用范围,在不降低其原有优良性能的前提下,提高环氧树脂的耐热性能显得尤为重要。随着高新技术的不断发展,对环氧树脂提出了越来越高的要求,因而也就不断推动着高性能环氧树脂的研究开发。

本论文研究的三酚基甲烷三缩水甘油醚是一种耐高温环氧树脂,其具有良好的韧性和加工性能,这种树脂广泛应用于高性能复合材料、封装材料等领域。本文通过加碱方式、闭环温度、相转移催化剂的量三种不同条件的对比,得出合成三酚基甲烷缩水甘油醚的最佳工艺,并选用聚酰胺作为固化剂,固化产物具有良好热性能和力学强度。采用FTIR、1H-NMR等手段对环氧树脂进行了表征。61481

实验结果表明:最佳工艺条件是三酚基甲烷:ECH=1.:30,采用氢氧化钠的饱和碳酸钠溶液作为环氧化反应催化剂,闭环温度为60℃。在此条件下得到环氧值为0.6285,产率为85.65%的三酚基甲烷的低分子环氧树脂。

毕业论文关键词  耐高温环氧树脂  三酚基甲烷  聚酰胺  热性能 

毕业设计说明书(论文)外文摘要

Title  The Study on the Synthetic Technology of High Resistant Epoxy Resin

Abstract Epoxy resin is a kind of thermosetting resin who has been widely used. In order to expand the application of epoxy resin, it is meaningful that improving heat resistance of epoxy resin. With the continuous development of high and new technology, and puts forward higher and higher requirements for epoxy resins, and thus constantly promotes the research and development of high performance epoxy resin.

Tri-(4-hydroxyphenyl) methane ether the article introduced is a heat resistant epoxy resin. It has excellent tenacity and process ability, and it is widely used as high performance composite and encapsulation materials. In order to gain heat-resistant epoxy resin matrix. Three factors such as the addition manner of the alkali, reaction temperature and catalyst usage was studied for gaining the best parameter of the synthesis of tri-(4-hydroxyphenyl) methane triglycidyl ether, poly(amic acid)s was chose for the hardener. The product had been proved to have good mechanical properties and bonding strength. The chemical structure of tri(4-hydroxyphenyl) methane triglycidyl ether was characterized by Fourier-transform infrared (FTIR) spectrometer and 1H NMR spectrometer.  

The results showed that the optimum technological condition is the material ratio of epoxy chloropropane to tri(4-hydroxyphenyl) methane is 1:30, the catalyst is NaOH in saturated solution, reaction temperature is 60℃, under this condition, the epoxy value is 0.6285, the product yield is 85.65%. 

Keywords  heat resistant  epoxy resin  tri(4-hydroxyphenyl)methane   poly(amic acid)s  thermal performance

1  绪论 1

1.1  研究目的和意义 1

1.2  环氧树脂的概况 1

1.2.1  环氧树脂的定义 1

1.2.2  环氧树脂的分类 1

1.2.3  环氧树脂的性能和应用特点 2

1.2.4  环氧树脂的主要应用领域 3

1.3  耐高温环氧树脂研究进展 4

1.2.1  合成具有耐热性骨架结构的环氧树脂 5

1.2.2  选择耐高温的耐热固化剂 5

1.2.3  改性环氧树脂提高耐热性 耐高温环氧树脂合成工艺研究:http://www.youerw.com/huaxue/lunwen_67270.html

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