摘要
采用预聚法制备了聚氨酯(PU)/13X分子筛复合材料。考察了在两种硬度下,分子筛含量对聚氨酯弹性体力学性能、耐溶剂性能的影响。结果表明,随着分子筛质量分数的增加,复合材料的拉伸强度、撕裂强度均呈上升趋势。当分子筛质量分数为5%、邵A硬度为70时其复合材料拉伸强度为31 MPa,撕裂强度达48.7 kN/m;当分子筛质量分数为5%、邵A硬度为80时其复合材料拉伸强度为42 MPa,撕裂强度达最大值61 kN/m。随着分子筛质量分数的增加,2种复合材料的溶胀度也有不同程度的下降。DSC分析表明,分子筛使PU/13X复合材料的结晶形态发生了改变,提高了其耐热温度。
The pre-polymerization method was used to prepare polyurethane/13X molecular sieve composites. In two different hardenss composites, the effects of molecular sieve content on mechanical properties and solvent resistance of polyurethane elastomer were researched. The results showed that the mechanical properies of polyurethane elastomer were enhanced while the weight percent of 13X molecular sieve increased. When the PU composites contained 5% molecular sieve and hardness was Shore A 70, the tensile strength came to maximum 31 MPa and the the weight percent of molecular sieve increased, the swelling capacity of the different hardenss composites had decreased. DSC analysis indicated that the addition of 13X molecular sieve changed crystalline structure of PU and improved heat-resistent.
出处
《聚氨酯工业》
2006年第2期29-31,共3页
Polyurethane Industry
基金
山西省自然科学基金资助项目(20031026)
关键词
聚氨酯
分子筛
力学性能
耐溶剂性能
polyurethane
molecular sieve
mechanical property
solvent resistance
