排球表面用高耐磨低迁移的聚氨酯塑料的制备与性能研究

Preparation and Properties of Polyurethane with High Wear Resistance and Low Migration for Volleyball Surface

以硅烷偶联剂KH-550对介孔二氧化硅(MSiO_(2))表面进行改性,制备了改性介孔二氧化硅(mMSiO_(2)),考察了在复合聚氨酯树脂中MSiO_(2)表面改性对材料性能的影响。结果发现:加入MSiO_(2)后,复合材料拉伸强度明显提高,断裂伸长率明显降低,而替换为mMSiO_(2)后复合材料强度进一步提高。加入MSiO_(2)后复合材料挥发性有机化合物(VOC)散发性能得到优化,并且未改性MSiO_(2)对复合材料苯系物吸附效果较优,mMSiO_(2)则对醛酮吸附效果明显。加入MSiO_(2)后复合材料耐磨性能得到明显提升,并且mMSiO_(2)效果更好。当MSiO_(2)和mMSiO_(2)分别为5份时,VOC综合散发性能最优,Taber磨耗值为0.42 g。

The surface of mesoporous silica(MSiO_(2)) was modified by silane coupling agent KH-550 to prepare modified mesoporous silica(mMSiO_(2)). The effects of surface modification of MSiO_(2) in composite polyamide resin on the properties of the material were investigated. The results show that after adding MSiO_(2), the tensile strength of the composites increases significantly, and the elongation at break decreases significantly. After replacing with mMSiO_(2), the strength of the composites is further improved. The VOC emission performance of the composites is optimized after adding MSiO_(2),and the adsorption effect of unmodified MSiO_(2) on BTEX was better than that of mMSiO_(2) on aldehydes and ketones. The wear resistance of the composites is significantly improved after adding MSiO_(2), and the effect of m MSiO_(2) is better. When MSiO_(2) and mMSiO_(2) are 5 phr respectively, the VOC emission performance is the best, the Taber wear value is 0.42 g.