抗再沉积剂在无磷洗衣粉中的效能研究

为研究抗再沉积荆在无磷洗衣粉中的效能，将羧甲基纤维素钠(CMC)、聚乙烯吡咯烷酮(PVP)、聚乙烯醇(PVA)分别配入两种无磷洗衣粉中，通过去污实验和循环洗涤实验，测定了污布和白布在洗涤前后的光谱反射率．去污实验表明，抗再沉积剂的加入，可以提高无磷洗衣粉的去污力；循环洗涤20次后，含抗再沉积荆的无磷洗衣粉对棉布的白度保持比对照样品提高4％-12％和4％-10％，对涤／棉混纺布提高4％-11％和3％-8％。

Study on the Effect of Anti-redeposition Agents in Nonphospate Powder Detergent

By adding such anti-redeposition Agents as CMC,PVP,PVA into two nonphospate powder detergent respectively and determining the spectrum reflecting ratio of soiled cloth and unsoiled cloth before and after washing tests and cycle of washing tests, the anti - redeposition effect of each agent was studied. Washing tests show that anti-redeposition agents can raise the detergency power of nonphospate powder detergent. And cycle of washing tests show that after 20 cycle of washing,the ratio of whiteness retention for unsoiled cotton cloth increases by 4%-12% and 4%-10% ; for unsoiled polyester-cotton blended cloth the ratio increase by 4%-11% and 3%-8%.