TPU/PVDC高阻隔共挤膜的制备与改性研究  

Preparation and Modification of TPU/PVDC High-barrier Co-extrusion Film

作　　者：蔡军锋 王波[2] CAI Jun-feng;WANG Bo(Shijiazhuang Campus of Army Engineering University,Shijiazhuang 050003,China;62191 Unit of PLA,Weinan 714100,China)

机构地区：[1]陆军工程大学石家庄校区,石家庄050003 [2]中国人民解放军62191部队,渭南714100

出　　处：《包装工程》2018年第19期53-57,共5页Packaging Engineering

摘　　要：目的采用共挤复合工艺制备一种高阻隔、阻燃、抗静电、耐磨性好的TPU/PVDC共挤膜。方法根据PVDC和TPU的材料特点,以及2种材料共挤膜的性能要求和应用需求,设计TPU/PVDC五层共挤薄膜结构,采用TPU改性配方设计,使共挤膜具有良好的阻燃性和抗静电能力,运用共挤复合技术,合理设计制备工艺流程,控制工艺中PVDC挤出机各区的加工温度和加工助剂比例,解决PVDC加工中受热易分解的技术难题。结果通过共挤复合工艺优化设计,制备的TPU/PVDC五层共挤薄膜厚度达154.3μm,透湿率可达到0.88 g/(m^2·d),阻燃性可达国标FV-0级,薄膜的撕裂强度为43 N,不可剥离。结论有效解决了PVDC共挤复合中的热分解问题,以及TPU树脂的阻燃、抗静电改性问题,制备的高阻隔TPU/PVDC共挤膜在透湿率、厚度、幅宽、阻燃性、抗静电和强度等方面具有优异的性能,为研制高阻隔复合封套材料提供了技术支持。The work aims to prepare a TPU/PVDC co-extrusion film with high barrier, flame retardancy, antistatic property and wear resistance. According to the material characteristics of PVDC and TPU, and the performance and application requirements of the co-extrusion film of two materials, the TPU/PVDC five-layer co-extrusion film structure was designed and the TPU material was modified to make the co-extrusion film have good flame retardancy and antistatic ability. The co-extrusion composite technology was applied to reasonably design and prepare the technological process, and control the processing temperature and processing agent proportion in each area of the PVDC extruder in the process, so as to solve the technical problems of easy decomposition due to heating in PVDC processing. Through the optimal design of co-extrusion composite technology, the thickness of the prepared TPU/PVDC five-layer co-extrusion film was 154.3 μm, the moisture permeability could reach 0.88 g/（m^2·d）, the flame retardancy could reach the national standard FV-0 grade, the tearing strength of the film was 43 N, and it could not be peeled completely. The problems regarding the thermal decomposition in the PVDC co-extrusion and the modification of flame retardancy and antistatic property of TPU resin are effectively solved. The prepared high-barrier TPU/PVDC co-extrusion film has excellent performance in moisture permeability, thickness, width, flame retardancy, antistatic property and strength. It provides technical support for the development of high-barrier composite sealing material.

关 键 词：高阻隔 TPU/PVDC共挤膜 封套材料 

分 类 号：TB484.3[一般工业技术—包装工程] TB487