海洋大气环境对封套防护材料性能影响  

Effect of Marine Atmospheric Environment on the Properties of Envelope Protective Materials

作　　者：徐豪 杨森 杨欢 邢东桧 周松山 戴文俊 XU Hao;YANG Sen;YANG Huan;XING Dong-hui;ZHOU Song-shan;DAI Wen-jun(Southwest Institute of Technique and Engineering,Chongqing 400039,China)

机构地区：[1]西南技术工程研究所,重庆400039

出　　处：《装备环境工程》2023年第10期131-138,共8页Equipment Environmental Engineering

摘　　要：目的探究铝塑型封套防护材料在湿热海洋大气自然环境贮存条件下性能衰退规律。方法通过优化铺层结构,采用SiO_(x)蒸镀双向拉伸聚酯膜作为外增强层,PA6共挤EVOH双向拉伸膜作为内增强层制备新型封套防护材料。在海洋大气环境试验站库内、棚下2种贮存条件下开展贮存试验,跟踪测试水蒸气透过率、氧气透过率、剥离力、拉断力和表面电阻率等关键性能,建立时间-性能影响曲线,同时记录材料内部湿度曲线和内置的金属圆片的锈蚀状态,以此评价海洋大气环境对铝塑型封套防护材料性能影响趋势。结果在经过180 d的贮存后,水蒸气透过率仍小于0.3 g/(cm^(2)·24 h),自研的新型封套防护材料在库内和棚下贮存环境下的阻湿能力分别提高了29.8%和31.5%,且剥离力和拉断力未发生明显降低,表面电阻率处于10^(9)~10^(11)Ω。结论通过降低水分子与外增强层分子的相互作用,可有效提高封套防护材料的阻隔能力,验证了多级防潮理念的科学性。The work aims to explore the performance degradation law of aluminum-plastic envelope protective materials under long-term storage in hygrothermal marine atmospheric environment.By optimizing the layer structure,new envelope protective materials were prepared with SiO_(x)evaporated biaxially stretched polyester film as the outer reinforcement layer and PA6 coextruded EVOH biaxially stretched film as the inner reinforcement layer.Then,storage tests were carried out in the warehouse and shelter of Marine Atmosphere Environmental Test Station.By testing critical properties such as water vapor transmission,oxygen transmission,peeling force,breaking force and surface resistivity,the time-performance effect curve was established.Meanwhile,the internal humidity curve of materials and corrosion state of carbon steel disc were recorded,so as to evaluate the effect trend of marine atmospheric environment on the performance of envelope protective materials.After 180 days of storage,the water vapor transmission was still less than 0.3 g/(cm^(2)·24 h),the moisture resistance of the self-developed new envelope protective materials in the shelter storage and warehouse storage environment were improved by 29.8%and 31.5%respectively,and peeling force and breaking force did not decrease significantly and surface resistivity was at a range of 10^(9)~10^(11)Ω.By reducing the interaction between moisture molecules and outer enhancement layer molecules,the barrier ability of the envelope protective material can be effectively improved,which verifies the scientific nature of the multi-level moisture transmission concept.

关 键 词：海洋大气环境 封套防护材料 贮存试验 水蒸气透过率 棚下贮存 库内贮存 多级防潮 长贮性能 

分 类 号：TJ410.89[兵器科学与技术—火炮、自动武器与弹药工程]