玻纤增强大豆蛋白复合材料的制备工艺及性能研究

The Research of Preparation Technology and Performance of SPI Enhanced by GF

采用大豆蛋白(SPI)和玻璃纤维(GF)作原料,用传统的热压成型方法来制备大豆蛋白/玻纤复合材料。相比长GF,加入短GF的SPI/GF复合材料的拉伸强度要高,但是断裂伸长率略低;随GF用量的增加,拉伸强度和流动性逐渐变大,吸水率和硬度逐渐变小。当GF用量为5份时,复合材料拉伸强度达到最大,相比纯SPI提高了206.5%。

The soybean separated protein/glass fibre （SPI/GF） composites were prepared through hot pressing method with GF and SPI as raw material.Comparing long GF,the tensile strength of SPI/GF compos ites with short GF is larger, but elongation at break is lesser. With GF content adding,tensile strength and melt flow change large gradually, water absorption and hardness change small gradually. When the GF content is 5%,the tensile strength of composites attains maximum, which is 206.5% of the tensile strength of pure SPI.