论文总字数：13485字

摘 要

微球型荧光颜料是近年来新发展的一种特殊的荧光颜料，跟传统的荧光颜料相比，它的各方面性能有明显提升，实用性很高，种类丰富。发展有机荧光颜料微球是荧光颜料发展的新途径。本文采用反相悬浮的方法制备荧光颜料微球。与传统的先制备荧光颜料树脂，再进行机械粉碎的方法比较，反相悬浮法制备的微球粒径可以很好的控制到微米级，粒径分布范围较小，并且可以通过原料的配比，反应条件等外部条件控制微球粒径的大小在一定范围。与常规悬浮聚合法相比，反相悬浮法的优点在于它的油相可以重复利用，节省资源，减少污染。

本文实验原料是三聚氰胺，尿素和甲醛，我们分别制备了三聚氰胺甲醛树脂微球，脲醛树脂微球和三聚氰胺-尿素混合树脂微球，并通过控制反应的时间，温度，PH，原料配比和乳化剂的用量等实验条件，来研究制备荧光微球的最佳反应条件和原料配比。试验结果表明，当三聚氰胺和尿素比为1： 2时，乳化剂的用量为2%时，我们制得了耐溶剂性最好，粒径范围分布均匀的荧光颜料微球。

关键词：荧光颜料微球 三聚氰胺 尿素 甲醛 反相悬浮法

Preparation of Fluorescent Pigment Microspheres by Inverse Suspension Method

ABSTRACT

Microsphere-type fluorescent pigment is a special fluorescent pigment newly developed in recent years. Compared with traditional fluorescent pigments, its performance in various aspects has been significantly improved, and its practicality is high and its types are abundant. The development of organic fluorescent pigment microspheres is a new approach to the development of fluorescent pigments. In this paper, fluorescent pigment microspheres were prepared by resuscitation,Comparing with the traditional method of preparing fluorescent pigment resin and then mechanically crushing, the particle size of microspheres prepared by reversed-phase suspension method can be well controlled to micron size, and the particle size distribution range is small, and the ratio of raw materials can be matched. , reaction conditions and other external conditions control the size of the microspheres within a certain range.Compared with the conventional suspension polymerization method, the advantage of the inverse suspension method is that its oil phase can be reused, saving resources and reducing pollution.

The experimental raw materials for this article were melamine, urea and formaldehyde. We prepared melamine-formaldehyde resin microspheres, urea-formaldehyde resin microspheres and melamine-urea mixed resin microspheres, and controlled reaction time, temperature, pH, raw material ratio and emulsifier. The amount of the experimental conditions, to study the preparation of fluorescent microspheres the optimal reaction conditions and raw material ratio. The experimental results show that when the ratio of melamine to urea is 1:2 and the amount of emulsifier is 2%, we prepared fluorescent pigment microspheres with the best solvent resistance and uniform particle size distribution.

Keywords: Fluorescent pigment microspheres Melamine Ureaformaldehyde Inverse suspension

目录

摘 要

ABSTRACT

第一章文献综述

1.1荧光颜料的概述

1.1.1荧光颜料的发展

1.1.2荧光颜料的荧光机理

1.2荧光颜料微球的制备方法

1.2.1块状树脂粉碎法

1.2.2乳液聚合法

1.2.3反相悬浮法

1.3荧光颜料的用途

1.3.1荧光颜料微球在分散染料的应用

1.3.2荧光颜料微球在涂料中的应用

1.3.3荧光颜料微球在涂饰剂中的应用

1.4荧光颜料微球的结构和类别

1.4.1荧光颜料的结构

1.4.2荧光染料的类别

1.5本论文的研究内容和目标

1.5.1研究目标

1.5.2研究内容

第二章 实验部分

2.1实验药品与试剂

2.2实验仪器

2.3实验原理

2.4实验过程

2.3.1三聚氰胺甲醛树脂荧光颜料微球的制备

2.3.2脲醛树脂荧光颜料微球的制备

2.3.3三聚氰胺＋尿素＋甲醛树脂荧光微球的制备

2.3.4改变实验条件即用控制变量法，重复试验

2.5性能测试

2.4.1粒径观测

2.4.2耐溶剂性能测定

2.4.3荧光效果测定

第三章 结论与讨论

3.1树脂的耐溶剂性能

3.2固化pH对粒径的影响

3.3乳化剂span80用量对微球粒径的影响

3.4固化阶段反应温度对微球粒径的影响

3.5荧光颜料微球在紫光灯下的效果

第四章结论与展望

4.1结论

4.2展望

4.2.1反应中遇到的问题与思考

4.2.2展望

参考文献

致谢

第一章文献综述

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