Study on the Effect of Organic Additives and Inorganic Fillers on Properties of Sodium Silicate Wood Adhesive Modified by Polyvinyl Alcohol
Study on the Effect of Organic Additives and Inorganic Fillers on Properties of Sodium Silicate Wood Adhesive Modified by Polyvinyl Alcohol
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DOI：
10.15376/biores.10.1.1528-1542
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发表时间：
2015-01
期刊：
影响因子：
1.5
通讯作者：
Liu Xiaomei;Yiqiang Wu;Zhang Xinli;Yingfeng Zuo
中科院分区：
文献类型：
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作者：
Liu Xiaomei;Yiqiang Wu;Zhang Xinli;Yingfeng Zuo
为了提高PVOH(聚乙烯醇改性)水玻璃木材胶粘剂的性能，在体系中加入不同的有机添加剂(化合物A)和无机填料(化合物B)。用扫描电子显微镜(SEM)、光谱分析(FT-IR)、差示扫描量热法(DSC)和热重分析(TGA)研究了它们对复合胶粘剂热稳定性和分子结构的影响。结果表明，当氨基酸、正硅酸乙酯、十二烷基硫酸钠的质量比为5：3：3的化合物A和50%的活性氧化镁和50%的纳米二氧化硅组成的化合物B以90：3的比例加入到交联型硅酸钠胶粘剂体系中时，其粘接性能和耐水性分别比纯硅酸钠和交联硅酸钠分别提高了97.6%和46.7%，提高了13.7%和36%。有机添加剂和无机填料的加入对PVOH改性水玻璃木材胶粘剂的粘接强度和热稳定性均有较好的效果。
To enhance the properties of sodium silicate wood adhesive modified by PVOH (polyvinyl alcohol), different organic additives (compound A) and inorganic fillers (compound B) were added into the system. Their effects on the thermal stability and molecular structure of the composite adhesive were investigated by scanning electron microscopy (SEM), spectroscopic analysis (FT-IR), differential scanning calorimetry (DSC), and thermo- gravimetric analysis (TGA). The results showed that when the compound A consisting of amino acid, TEOS (Tetraethyl orthosilicate), sodium dodecyl sulfate with the mass ratio of 5:3:3 and B consisting of 50% active magnesium oxide and 50% nano-silica were added into the cross-linked sodium silicate adhesive system with the ratio of 90:3, the bonding and water resistance properties were improved by 97.6% and 46.7%, or 13.7% and 36% relative to pure and cross-linked sodium silicate, respectively. The addition of organic additives and inorganic fillers had a good effect on both the bonding strength and thermal stability of sodium silicate wood adhesive modified by PVOH.