杨梅树皮预缩液发泡材料的制备及基本性能研究

Study on Preparation and Basic Properties of Foaming Materials of Bayberry Bark Pre-Concentration

摘要: 本研究利用杨梅树皮预缩液和糠醇作为主要原料，在催化剂、增塑剂、交联剂、表面活性剂和发泡剂的作用下，合成了一种发泡材料，并对其相关性能进行表征。研究得出，该发泡配方及工艺条件下的泡沫材料表观密度为41.8 kg/m³，外观良好，泡孔致密且孔径分布均匀，均为开孔结构，平均孔径为1663 μm；泡沫具有优异的吸水特性和导热特性，最高吸水率约为600%，导热系数低至0.0232 W/(m•k)；泡沫的氧指数为25.6%，接近B2级的阻燃级别；泡沫的压缩强度低，但稳定性较好，尺寸变化率不超过2%。

Abstract: In this study, a foaming material was synthesized with pre-concentration of bayberry (Myricarubra (Lour.) S. et Zucc.) bark and furfuryl alcohol under the function of catalyst, plasticizer, crosslinking agent and surfactant as well as foaming agent. The performance of the foam was systematically followed and characterized. The results show that a fine appearance and open cell were obtained. The apparent density of the foam is around 41.8 kg/m³, the pores are dense and uniform, the average pore size is around 1663 μm. The foam has outstanding water uptake and thermal insulation performance, the maximum water uptake and thermal conductivity are 600% and 0.0232 W/(m•k), respectively. The oxygen index of the foam is 25.6%, which classified as B2. Although this foam has inferior vertical compression strength, it has high dimensional stability, in which the dimensional size variation is not exceeding to 2%.