亲水抗静电共混聚酯母粒的制备及其性能

Synthesis and properties of hydrophilic antistatic polyester masterbatch by melt blending

为改善聚酯纤维的吸湿性和抗静电性,将具有高吸水性的纳米级聚丙烯酸钠粒子与常规聚酯混合制备共混母粒,对共混母粒的热性能、熔融结晶性能、亲水性能和流变性能进行了表征。结果表明,高吸水性微粉的加入明显改善了聚酯的亲水性,且其热稳定性与普通聚酯相近。然后用一定比例共混母粒与常规聚酯混合进行熔融纺丝,并研究了共混纤维的吸湿性和抗静电性。高吸水性微粉的加入使共混聚酯结晶速率提高,亲水性改善,纤维的吸湿性、抗静电性提高;当聚丙烯酸钠的添加量为0.4%时,可制得力学性能优良且回潮率达到2.09%、体积比电阻达到2.3×10~9Ω·cm的纤维。

In order to improve hygroscopicity and antistatic property of polyester（ PET） fiber,the blend master batch was prepared by blending the nano-sized superabsorbent sodium polyacrylate particles with conventional polyester,and its thermal properties,melt crystallization,hydrophilicity and rheological properties were researched. The results show that the hydrophilicity of polyester is significantly improved with addition of superabsorbent powder. The thermal stability of masterbatch is similar to that of ordinary polyester. A certain proportion of masterbatch is selected to mix with conventional polyester to manufacture staple fiber by melt spinning,and the hygroscopicity and antistatic property of the blended fibers were analyzed,respectively. The results show that the addition of superabsorbent micropowder improves the crystallization rate and the hydrophilicity of the blended polyester. The hygroscopicity and antistatic property of the blended fiber are also enhanced. The fiber with excellent mechanical properties is obtained by adding 0. 4% of sodium polyacrylate,and its moisture absorption reaches 2. 09% and the volume resistivity reaches 2. 3 × 10^~9 Ω·cm.