CAJ | 학술논문

通过溶液共混法制备了热塑性聚氨酯( TPU )/凹凸棒土( AT )纳米复合材料，研究AT的加入对TPU基体滞后、拉伸应力软化行为和松弛效应的影响。研究结果显示：随着AT的加入，纳米复合材料的滞后圈增大，拉伸应力软化效应增强，应力松弛速率和程度降低。 TPU/AT体系分子链运动模型表明纳米复合材料力学行为的改变，可能是因为AT和TPU基体间形成了氢键，阻碍了分子链的运动。
통과용액공혼법제비료열소성취안지( TPU )/요철봉토( AT )납미복합재료，연구AT적가입대TPU기체체후、랍신응력연화행위화송이효응적영향。연구결과현시：수착AT적가입，납미복합재료적체후권증대，랍신응력연화효응증강，응력송이속솔화정도강저。 TPU/AT체계분자련운동모형표명납미복합재료역학행위적개변，가능시인위AT화TPU기체간형성료경건，조애료분자련적운동。
Thermoplastic polyurethane/attapulgite ( TPU/AT ) nanocomposites were pre-pared via solution blending process. The influence of hysteresis, stress softening behavior and stress relaxation effect of the AT on TPU matrix were investigated. The results demon-strated that with the addition of AT,the hysteresis loops were bigger,the stress softening effects were more obvious and the rate and degree of stress relaxation were reduced than those of pure TPU. The molecular motion model of TPU/AT system indicated that the influ-ence of mechanical behavior of AT on TPU matrix was possibly related with density of the hydrogen bond between AT-TPU,which may block the movement of chains.