摘要
涤纶短纤维的抗起球效果关键在于水解后聚酯的分子质量,良好的可纺性需要水解前特性黏度[η]≥0.55dL/g,但真正的不起球短纤维需要拉伸水解后[η]≤0.39dL/g。格莱仕化学公司开发的GLYSILGS系列抗起球添加剂适用于PTA流程和DMT流程,可以提高聚酯分子质量到可纺性良好的[η]≥0.55dL/g。它们不会在有副产物水的PTA流程中水解,但可以在纺丝后水解以降低分子质量到不起球所需的[η]≤0.39dL/g。这种添加剂的EG溶液不会在PTA流程生成砂石,也不与聚酯分子形成永久交联或支链。
The most important criterion for pilling resistance is the molecular mass after hydrolysis, good spinning performance requires PET intrinsic viscosity over 0.55, but pilling free staple requires below 0.39 after hydrolysis. The GLYSIL GS series pilling resistant additives from Glysil Chemicals Inc. are excellent for both PTA and DMT processes, they can increase to over 0.55 for spinning. They would not hydrolyze in water containing PTA polymerization process, but hydrolyze after spinning to reduce to 0.39 or lower for pilling resistance. These ethylene glycol solutions of additives would not form sand or rocks in PTA process, and they would not form permanent crosslinks or branches with polyester.
出处
《聚酯工业》
CAS
2003年第5期13-15,39,共4页
Polyester Industry