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摘要呋喃树脂是指以具有呋喃环的原料通过缩聚反应合成的树脂，由于分子结构中含有稳定的呋喃环，因而具有优良的耐酸、耐碱、耐溶剂性能。随着社会的不断发展，实际生产中对呋喃树脂及其固化体系有着越来越高的要求。近年来对呋喃树脂以及其固化体系的研究越来越多。
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本论文研究的呋喃树脂主要运用于铸造行业，采用的原料均来自于工厂实际生产中的原料。实验中，在树脂加入量为1%（占砂重）的情况下，研究了以甲醇和乙二醇为溶剂的固化剂在不同酸度、不同加入量以及加入不同的添加剂后对呋喃树脂固化体系的影响，主要测试的参数为不同固化时间下的固化强度。
实验结果表明：在树脂加入量为1%时，选用对甲苯磺酸为固化剂，以甲醇为溶剂，加入适量浓硫酸调节总酸度为35.2%（以H2SO4计），固化剂加入量为50%（占树脂重），并向树脂中加入适量的无水氯化铝为添加剂，能使固化反应有比较好的效果。固化速度合适，而且最终固化强度也相对比较高。21973
关键词 呋喃树脂 固化剂 总酸度 添加剂 固化性能
毕业论文设计说明书（论文）外文摘要
Title The Research of the Curing of Furan Resins for foundry
Abstract
Furan resin is compounded by alcohol and furfural , which has rings of furan.It can stand with acid, alkali, solvent due to the ring of furan. With the continuous development of society, people have ever-increasing demands on furan and its curing system.
Bake furan resin sand of this paper is mainly used in the foundry industry. Furan resin sand and resin materials used in the experiments are from the actual production of the plant material, so to be more realistic production conditions. Test mode using the control variable, furan was added at a resin content of 1% (total weight of sand) in the case, researching the different acidity curing agent, a curing agent is added in varying amounts and adding the effects of different additives on the furan resin curing system. The main parameters of the test has cured curing speed and the ultimate strength of the cured.Experimental results show that: When resin is added in an amount of 1%, Optional curing agent is p-toluenesulfonic acid in methanol as solvent, the total amount of concentrated sulfuric acid was added to adjust the acidity of 35.2% (H2SO4), curing agent content of 50% (total resin weight), the amount of resin added to anhydrous aluminum chloride as an additive, curing reaction can have a better effection. The curing speed is suitable, and ultimately curing intensity is relatively high.
Keywords furan resin hardener acidity addition agent curing properties
目 录
1 绪论 1
1.1 研究目的和意义 1
1.2 呋喃树脂的概况 1
1.2.1 呋喃树脂的定义 1
1.2.2 呋喃树脂的分类 2
1.2.3 呋喃树脂的性能和应用特点 3
1.2.4 呋喃树脂的主要应用领域 4
1.3 呋喃树脂固化体系的研究进展 5
1.3.1 固化反应原理的研究 5
1.3.2 不同条件对固化反应的影响 7
1.4 本研究的意义和内容 9
2、实验内容 10
2.1 实验原料与主要设备 10
2.2 实验操作步骤 11
2.2.1 固化剂体系的配制 11
2.2.2 固化反应 12
2.2.3 固化性能测试 12
2.2.4 固化体系酸度的测定 12
2.3 结果与讨论 14