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为了提高低质钩叶藤(Plectocomia pierreana)材的强度及装饰性能,分别选用酸性染料、活性染料、碱性染料、直接染料与三聚氰胺改性脲醛树脂(MUF)复配制得增强-染色复合改性剂,对藤材进行真空加压浸渍改性处理,并对改性藤材的颜色及物理力学性能进行检测。结果表明:酸性染料与MUF复配改性藤材的染色效果最好;染料的加入对树脂的增强改性作用几乎没有影响;经增强-染色处理后,藤材密度提高67.91%~73.02%,抗弯强度提高47.41%~49.69%,抗弯弹性模量提高56.01%~57.59%,抗压强度和弹性模量平均提高50%以上。傅里叶红外光谱(FTIR)分析表明,MUF与染料复配染色过程中,染料未与藤材组分直接作用,而是与MUF结合形成盐固着于藤材内部,从而完成染色。经增强-染色改性后,钩叶藤材的密度增大,强度提高,装饰性能良好,大大提高了其利用价值。
In order to improve the strength and decorative properties of Plectocomia pierreana, the effects of enhancing the dyeing and finishing properties of the composite materials of acid dye, reactive dye, basic dye, direct dye and melamine modified urea formaldehyde resin (MUF) Agent, the rattan vacuum impregnation modification, and the modified rattan color and physical and mechanical properties were detected. The results showed that the dyeing effect of acid dye and MUF compound modified cane was the best. The addition of dye had little effect on the modification of resin. The density of cane increased 67.91% ~ 73.02% Flexural strength increased by 47.41% -49.69%, flexural modulus increased by 56.01% -57.59%, compressive strength and elastic modulus increased by more than 50% on average. Fourier transform infrared spectroscopy (FTIR) analysis showed that during the complex dyeing process of MUF and dye, the dye did not directly interact with the rattan component, but instead combined with MUF to form a salt that was immobilized inside the rattan to complete the dyeing. After the enhancement - dyeing modified, the density of hook and leaf rattan increased strength and decorative good, greatly improving its value.