无机填充剂对聚酰胺湿法涂层商标织物性能的影响

Influence of inorganic fillers on properties of polyamide wet-coating trademark fabrics

针对聚酰胺湿法涂层商标织物存在的抗黏结性和吸墨性不佳、pH值偏高等问题,着重研究各类无机填充剂应用于涂层浆中的稳定性、流变性、涂层膜表面形貌、拉伸性能以及涂层织物风格、吸墨性、白度、pH值和耐水洗色牢度性能等,分析其对湿法涂层商标织物性能的影响。结果表明:含碳酸钙和高岭土的涂层浆稳定性较高,其中含碳酸钙的涂层膜断裂伸长率为30.22%,柔韧性较佳,但其涂层织物的pH值为8.25;而含水滑石的涂层浆稳定性和分散性相对较差,且制得的涂层织物的pH值为8.55;含硅灰石的涂层浆流变性优异,涂层膜表面均匀光滑,且具有大量微孔结构,吸墨性更好,涂层织物白度高,耐水洗色牢度达4~5级,pH值为7.32,符合环保要求。

To improve adhesion resistance,ink absorption property and reduce pH value produced in the polyamide wet coating trademark fabrics,the influence of inorganic fillers on properties of wet coating of trademark fabrics were investigated by characterizing the stability and rheology properties of coating slurry after addition of different inorganic fillers into the coating slurry,the surface morphology and tensile properties of the resultant coating film and the style,ink absorption,whiteness,pH and washable color fastness of coated fabrics. The results show the coating slurry containing calcium carbonate and kaolin has higher stability,wherein the elongation at break of the coating film containing calcium carbonate is30. 22% with better flexibility,but the pH of the resultant coated fabric is 8. 25. The coating slurry with hydrotalcite has relative poor dispersion and stability,and the pH value is 8. 55. The coating slurry containing wollastonite presents excellent fluidity. The resultant coating film is uniform and smooth and has better ink absorption property with a large number of micropores. Moreover,the coated fabrics present high whiteness and qualified environment friendliness performance. The grade of washable color fastness is 4- 5,and the pH value is 7. 32.