铸造用中氮低游离甲醛自硬呋喃树脂的研究

摘要

Furan resin sand molding and core making at present are widely used in foundry production.For containing a great amount of free formaldehyde, the domestic furan resin commonly smells great; the high price of furfuryl alcohol as the main raw material of synthesis of furan resin results in higher price of the resin, which hinders the application of furan resin to foundry.The main effect factors on the properties of the furan resin were studied by the orthogonal test.By adding the appropriate and low-cost modifier, the environmental-friendly self-hardening furan resin for casting that is low free formaldehyde, high strength of molding sand, low viscosity, low production costs was successfully synthesized.%目前铸造生产中自硬呋喃树脂砂造型制芯应用非常广泛.国内的呋喃树脂普遍气味大,主要原因是树脂中含有大量的游离甲醛；合成呋喃树脂的主要原料糠醇价格高,导致树脂价格普遍较高,阻碍了呋喃树脂的应用.通过正交试验,对影响呋喃树脂性能的主要因素进行了研究.通过加入价格便宜的改性剂替代糠醇,合成出了一种中氮、低游离甲醛、高型砂强度、低粘度、低生产成本的铸造用环保型自硬呋喃树脂.