采用10%氢氧化钠、20%硫酸、甲苯分别对Ca(OH)2和Al(OH)3为填料的不饱和树脂聚合物浸泡,浸泡期分别为15、30、60天,测定其抗弯强度并进行力学性能分析.结果表明,随着腐蚀液浸泡时间的延长,其抗弯强度和抗压强度迅速下降.由显微镜对人造石浸泡后的观察表明.腐蚀主要是针对不饱和树脂聚合物发生,使聚合物与填料之间的粘接力降低.甲苯对不饱和树脂聚合物的腐蚀作用较大,氢氧化钠的腐蚀作用次之,而硫酸的腐蚀作用相对较小.
Unsaturated polyester resin artificial marble with the fillers of Ca(OH)2 and AI(OH)3 were soaked by 10% NaOH, 20% H2SO4 and toluene by 15, 30, 60 days. The flexural strength was mensurated and the mechanical properties was analyzed. The results showed that flexural strength was reduced rapidly with prolonging of the soaking time in corrosion solutions. The artificial marble soaked into corrosion solutions was observed by microscope. The observations showed that corrosion was dead against the polymer of unsaturated polyester resin, and the cohesive force between the polymer and fillers was reduced. The results of corrosive tests showed that toluene as organic solvent had a corrosion strong effect on polymer of unsaturated polyester resin, sodium hydroxide was relative strong, and sulfuric acid was relative weak.
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