知识与财富的链接
利用聚乙烯亚胺（PEI）与γ-缩水甘油醚丙基三甲氧基硅烷（KH560）反应制得表面施胶增强剂PEI-KH560,并对其施胶性能和增强性能进行了考察。结果表明,PEI-KH560能够显著改善手抄片的物理性能和疏水性能。与空白样相比,当PEI-KH560用量为1.35%时,手抄片的干、湿抗张指数分别提高了33.9%和61.8%,表面接触角由53.4°提高至69.8°,Cobb60值降低了24.3%,手抄片表面由高度亲水性转变为具有一定的疏水性。PEI-KH560增强了手抄片纤维间的结合强度,改善了手抄片的强度性能,同时赋予手抄片疏水性能。
A novel surface sizing agent PEI-KH560 was prepared through a simple reaction using polyethyleneimine (PEI) and KH560.The physical properties and hydrophobicity of the dried handsheet were determined after impregnating in PEI-KH560.The results showed that when the dosage of PEI-KH560 was 1.35%, the dry tensile index and wet tensile index of handsheet increased by 33.9% and 61.8%, respectively.The surface of the handsheet changed into hydrophobic surface from high hydrophilic surface, and the surface contact angle increased from 53.4° to 69.8°, the Cobb60 value decreased by 24.3%. It is indicated that PEI-KH560 enhanced the bonding strength between fibers, and played a positive role in improving the strength and hydrophobicity of the paper.
