金属热加工高温防护涂料制备与表征

摘要本课题针对无机非金属材料保护涂料的种种不足，结合金属热加工保护涂料的实际应用工艺需求，设计以高分子聚合物为基体，添加膨胀型阻燃剂，制备树脂基金属热加工保护涂层，考察涂层的热性能及涂层对金属表面形貌的影响。81235

本实验以型号为 GA0533、NJ-830、NJ-840S 的环氧树脂为原料，并辅以型号为 GA0533- 固化剂和 NJ - 固化剂，同时分别添加膨胀型阻燃剂 MPP-1 和 MPP-2，按照配比制备耐高温防护涂料。将所制涂料涂于 Q235 钢样表面，常温固化。

通过热重分析（TG)测试三组只添加固化剂的环氧树脂和两种膨胀型阻燃剂的热稳定性，分别得到三种环氧和两种膨胀型阻燃剂的初始分解温度和残炭量，分析涂层和膨胀型阻燃剂的热性能。

通过马沸炉高温煅烧涂有防护涂层的样块，观察涂层热处理后所形成炭层的厚度，选择出防护效果较好的样块，并通过扫描电镜（SEM）观测氧化层厚度，探讨涂层对样块表面形貌的影响。

测定所制备的六种涂层的拉伸强度，分析对比每种涂层的力学性能。总结对比六种涂层的各种性能参数，筛选出防护效果最好的涂层。本实验对有机耐高温涂料在工业生产和应用具有重要的意义。

毕业论文关键词：热防护涂层；环氧树脂；膨胀型阻燃剂；氧化层；炭层。

Abstract This issue aims at various weakness of inorganic non-metallic materials protective coating。 With craft demands for metal protection coating thermal processing in practical application, it designs polymer as the base material, then adds intumescent flame retardant (IFR), to prepare a resin coating to protect metal thermal processing and study the thermal properties of the coating and its effect on the metal surface topography。

In this experiment, Type GA0533, NJ-830, NJ-840S epoxy resin were recognized as raw material, accompanying with Type GA0533-curing agent and NJ-curing agent, adding respectively IFR MPP-1 and MPP-2, to manufacture High temperature protective coatings in accordance with the ratio。 Later smearing Q235 steel sample surface with such coating , which will solidify in room temperature。

By testing thermal stability of three kinds of epoxies that only adds solidification and two types of IFR through TG, their initial decomposition temperature and carbon residue would be obtained。 All these are for analyzing thermal properties of the coating and IFR。

According to high temperature burnt samples that are smeared with protective coating, observe carbon layer thickness after calefaction of the coating, and then choose the sample possessing excellent protection。 Afterwards, investigate the effect that the coating works on the sample surface morphology by observing oxidation layer thickness through SEM。

Finally measure above-mentioned six layers’ tensile strength, and analyze or contrast each layer’s mechanical properties。 Through summarizing their different performance parameters, select the coating that enjoys the best protective function。 This experiment is significant for organic heat resistant coatings to be used in industrial production and application。

Key words: Thermal protective coatings, epoxy resin, intumescent flame retardant, oxide layer, carbon layer

第一章绪论 1

1。1 耐高温防护涂料概述 1

1。1。1 耐高温涂料简介 1

1。1。2 环氧树脂于耐高温防护涂料中的应用 1

1。1。3 环氧树脂的结构和特点金属热加工高温防护涂料制备与表征:http://www.youerw.com/cailiao/lunwen_94800.html