黄麻/豆腐渣/淀粉复合材料的制备及其性能

Preparation and properties of jute /soybean dregs /starch composites

以黄麻纤维为增强相,经NaOH改性后的豆腐渣/淀粉混合溶液为复合基,用湿法模压法制备黄麻/豆腐渣/淀粉复合材料。利用正交试验设计方案研究了豆腐渣/淀粉质量比、黄麻纤维质量分数、热压温度、热压强度、热压时间对复合材料板材拉伸性能和亲水性能的影响。结果表明:当豆腐渣/淀粉质量比为3∶1、黄麻纤维质量分数为20%,热压强度为6 MPa,热压温度为80℃,热压时间为2 min时,复合材料板材的拉伸断裂强度最优;试验制备的复合材料片材亲水性较好,耐水性能较差。

Jute/soybean dregs/starch composites were prepared by wet lamination method with jute fiber as a reinforcement phase and soybean dregs/starch solution modified by NaOH as a matrix phase. The effects of the mass ratio of soybean dregs/starch, mass fraction of jute, hot-pressing temperature, hot- pressing strength, and hot-pressing time on the tensile properties and hydrophilicity of the composite sheets were studied by orthogonal experiment design. The results showed that when the mass ratio of soybean dregs/starch was 3： 1, mass fraction of jute was 20% , compression intensity was 6 MPa, hotpressing temperature was 80 ℃ , and hot pressing time was 2 rain, the tensile fracture strength of the composite sheet was the best. The prepared composite sheets have good hydrophilicity but poor water resis resistance.