辽阳石化推出高阻隔聚酯

辽阳石化公司成功研制出以纳米溶胶为添加剂的高阻隔聚酯专用料。这种高阻隔聚酯专用料是采用纳米复合方法,在聚酯合成过程中加入经高分子改性的纳米溶胶,使其均匀分散在聚酯高分子链间,有效阻隔气体渗透、制得的高阻隔聚酯阻隔性能突出,是普通聚酯阻隔性的2倍。使用     

辽化开发出高阻隔聚酯专用料

近日,辽阳石化公司成功研制出以纳米熔胶为添加剂的高阻隔聚酯专用料。高阻隔聚酯专用料是采用纳米复合方法,在聚酯合成过程中加入经高分子改性的纳米溶胶,使其均匀分散在聚酯高分子链问,有效阻隔气体渗透,制得的高阻隔聚酯阻隔性能突出,是普通聚酯阻隔性的2倍。     

热灌装瓶专用聚酯切片

热灌装瓶专用聚酯切片聚酯瓶因透明、强度高、质轻不碎、有较好的气体阻隔性能，用于饮料包装，很受欢迎，但因玻璃化温度在７７～８０℃，超过此温度，瓶子会变形，因而不能用于饮料、果汁、果酱的热灌装。聚酯的表观玻璃化温度可以随结晶度的增加而提高，通过以下两种方...     

期刊文摘

啤酒用PET瓶的技术开发动向　 (日 )《プラチックスエ一ジ》第 48卷　第 8期　第 10 2 -10 9页　 2 0 0 2年日本于 1981年首先开始使用 1 2升、3升PET简装瓶作为生啤酒用瓶 ,并在市场流通销售。由于PET瓶是单层结构 ,气体阻隔性能不佳。于 1983年开始研究开发了表面涂覆PVDC 3 0 0毫升、180 0毫升PET球形啤酒用瓶、多层复合PET啤酒用瓶等技术。为了提高啤酒用瓶的阻隔性能 ,目前主要采用的技术是 :①通过真空镀膜方法 ,在PET瓶表面喷镀氧化硅、铝等物质 ,达到阻隔气体的目的 ,一般镀膜镀层厚度为 12 μm ,氧透过率达到 0 1～0 2…     

热灌装OPP瓶和“无棱条”PET瓶引人注目

透明和价格竞争力的改善，以及耐热性能的提高，使得OPP被用作热灌装阻隔瓶的前景一片光明。同时，高产率和“无棱条”设计电提升了PET瓶在热灌装领域的地位。     

热灌装塑料包装瓶最新进展

在提高了透明性、降低了价格、并改进了自身的耐热性能后,取向聚丙烯制品重新在热灌装阻隔包装瓶领域找到一席之地。同时热灌装PET瓶也因具备更高的生产效率和“无板条式”瓶坯设计,应用领域不断扩大。     

热灌装瓶用聚酯树脂开发研究

分析了热灌装瓶用聚酯树脂及制品瓶子,得到热灌装瓶用聚酯树脂应具备的特性、瓶口结晶和热定型工艺要求的结晶性能等参数,据此试合成了热灌装瓶用聚酯树脂。通过制瓶和对瓶子的检测,表明试合成的聚酯树脂能满足热灌装瓶用的要求。     

高阻隔聚酯专用料成功为食品瓶助力

辽阳石化公司研究院采用纳米复合方法在聚酯合成过程中加入经高分子改性的纳米溶胶,使其均匀分散在聚酯高分子链间,有效阻隔气体渗透,制得的高阻隔聚酯阻隔性能突出,是普通聚酯阻隔性的两倍。使用该技术生产的高阻隔聚酯切片在制瓶时操作简单,便于控制,不需要特别精密、复杂的注塑模具,可以在普通注塑——制瓶联合设备上直接生产单层、透明的高阻隔聚酯啤酒瓶,有效降低生产成本。     

辽阳石化研制成功高阻隔聚酯专用料

辽阳石化研究院采用纳米复合方法,在聚酯合成过程中加入经高分子改性的纳米溶胶,使其均匀分散在聚酯高分子链间,有效阻隔气体渗透,制得的高阻隔聚酯阻隔性能突出,是普通聚酯阻隔性的两倍。使用该技术生产的高阻隔聚酯切片在制瓶时操作简单,便于控制,不需要特别精密、复杂的注塑模具,可以在普通注塑-制瓶联合设备上直接生产单层、透明的高阻隔聚酯啤酒瓶,有效降低生产成本。     

聚酯（PET）结晶性能的改进与应用

作者研究了用间苯二甲酸(PIA对聚酯(PET)结晶性能的改进,表明热灌装瓶用共聚聚酯切片有特殊的结晶性能;结合热灌装瓶的成型工艺,介绍了热灌装瓶用共聚聚酯切片是如何适应加工需要的。     

制造耐热聚酯瓶的新方法

在分析现有国内外热灌装聚酯瓶制造技术的基础上,提出一种制造耐热105℃聚酯瓶的新方法,给出了试验装置及样瓶的检测结果,该方法可用于减轻瓶质量和应用于100℃以上的灌装。该方法已授予发明专利,热灌装聚酯瓶的制造技术,可朝着更高温度灌装和广口热灌装的应用发展。     

包装用聚酯容器的现状及进展

介绍了当前聚酯包装容器的主要品种聚对苯二甲酸乙二醇酯(PET)容器的基本特征、PET容器的品种及其应用领域，讨论了提高PET瓶耐热性的各种方法并在比较热定型法、掺混法及多层共吹塑法制备PET热灌装瓶的缺点的基础上，提出了当前我国发展PET热灌装瓶应以热定型法为主的主张。围绕啤酒包装方面的应用，简要地介绍了提高．PET瓶气体的阻透性的多层共吹塑技术及其活化技术的应用以及PET瓶容器的内壁涂覆等表面处理技术的基本情况。通过比较聚萘二甲酸乙二醇酯(PEN)和PET的特性，阐明了PEN瓶在热灌装、高阻透性以及重复灌装使用等方面的优势，展示了开发应用PEN瓶在聚酯容器升级换代中的重要性；同时指出，PEN瓶之开发应用，在当前尚面临降低生产成本这个十分敏感的现实问题。     

Hot‐fillable containers containing PET/PEN copolymers and blends

Bottles and containers made of PET are not suitable for hot filling since the limiting upper‐use temperature of this polymer is about 85°C. In the present study the properties and performance of bottles made from copolymers and blends of PET containing NDC groups and manufactured by the Injection Stretch Blow Molding (ISBM) process were investigated. These compositions possess advanced properties and can be used up to 95°C. The properties of these bottles were found to depend on their composition and microstructure. The glass transition temperature, the degree of crystallinity and the induced strains that were measured by differential scanning calorimetry and differential mechanical thermal analysis are reported. It was concluded that NDC‐containing PET based copolymers and blends could be processed by a one‐stage ISBM process into containers of improved properties and hot‐filling capabilities. Polym. Eng. Sci. 44:1670–1675, 2004. © 2004 Society of Plastics Engineers.     

涤纶DTY油剂的应用性能

分别采用国产油剂1#,2#及进口油剂3#生产83 dtex/72 f涤纶DTY,对3种DTY油剂的应用性能进行了比较.结果表明:1#油剂的上油性能最好;1 #和3#油剂的抗静电性能优于2#油剂;1#和2#油剂的飞溅性能优于3#油剂;2#油剂有严重的刺激性气味.综合性价比,在涤纶DTY生产中,1#油剂的应用性能最优.     

PET瓶的常见质量缺陷分析

介绍了PET树脂的特点,叙述了性能各异的PET瓶的生产工艺流程。详细分析了冷灌装瓶和热灌装瓶的常见质量缺陷及处理措施。     

环氧丙烷/CO_2等离子处理对PET薄膜阻氧性能的影响

利用环氧丙烷/CO_2等离子体对聚对苯二甲酸乙二醇酯(PET)薄膜表面进行处理。傅里叶红外光谱分析表明,PET 表面沉积了树脂阻透层。采用气体渗透性测定仪对 PET 薄膜的阻透性能进行了研究。结果表明,环氧丙烷/CO_2等离子体的放电功率、工作压强、放电时间均会影响 PET 薄膜的阻透性能。随着放电功率和处理压强的增加,PET 薄膜的氧阻透性能先上升后下降。随着放电时间的延长,PET 薄膜的氧阻透性能不断增加,但增加的速度在后期放缓。     

Oxygen barrier property of synthesized polyacrylate coatings containing inter-chain cross-linking architecture on PET film

A series of coatings which applied for improving the oxygen barrier property of polyethylene terephthalate (PET) film were prepared based on the copolymerization of methyl methacrylate, methyl acrylate, diallyl maleate, and maleic acid (MA). The chemical structures of the coatings were characterized by Fourier Transform Infrared spectrometer. The curing behavior was analyzed by differential scanning calorimetry. The oxygen permeability (Po₂) was measured by gas permeability tester . The molecular weight was investigated by gel permeation chromatography (GPC). Po₂ is inversely proportional to the oxygen barrier property that the decrease of Po₂ indicates the improvement of oxygen barrier property. The coating containing inter-chain cross-linking structure formed by the dehydration of carboxylic acid improves the oxygen barrier property of PET film greatly. With the increasing content of MA, the oxygen barrier capability of coated PET film is enhanced according to the Po₂ decreasing from 1.450 to 0.8956. The Po₂ of coated PET film is minimized by selecting N-methyl pyrrolidone as solvent for polymerization. The GPC results indicate that the oxygen barrier of novel coated PET film can be obtained when the weight average molecular weight (Mw) is up to the stipulated value.     

含磷阻燃剂在聚氨酯弹性体中的阻燃机理研究

采用极限氧指数、TG—DTA分析、红外分析及元素组成分析。探讨了两种含磷阻燃剂磷酸酯1^#(P1^#)和TCP在异氰脲酸酯改性聚氨酯弹性体(IMPUE)中的阻燃机理。研究表明：P1^#和TCP阻燃IMPUE．既有气相阻燃机理和凝聚相阻燃机理．又有中断热交换阻燃机理。三者协同发挥阻燃作用。其中P1^#以气相阻燃和中断热交换阻燃为主,凝聚相阻燃为辅;TCP以凝聚相阻燃和中断热交换阻燃为主,气相阻燃为辅。     

凹凸棒石粘土在双组分聚氨酯涂料中的应用

考察凹凸棒石粘土(简称凹土)替代立德粉作为聚氨酯涂料填料的可行性,进行了遮盖力、光泽度、硬度、附着力、冲击强度等指标测试。结果表明,凹土经简单热处理即可用于聚氨酯涂料,替代部分立德粉;凹土1#填充性能与滑石粉相当,优于凹土2#和碳酸钙、高岭土、云母石、硫酸钡的填充性能。在获得同等涂料性能条件下,凹土1#对立德粉的最大替代量为50%,凹土2#添加量可达35%。     

Synthesis and film properties of epoxy esters modified with amino resins from glycolysis products of postconsumer PET bottles

Glycolysis of waste polyethylene terephthalate (PET) flakes obtained from grinding postconsumer bottles was carried out at 225–250°C and molar ratios of PET/ethylene glycol were taken as 1/1, 1/1.5, 1/5, and 1/10. Reaction product was extracted by hot water for three times and water‐soluble crystallizable fraction and water‐insoluble fraction were obtained. These fractions were characterized by acid and hydroxyl value determinations, differential scanning calorimeter analysis, and ¹H‐NMR analysis. Glycolysis product was used for synthesis of PET‐based epoxy resin. This epoxy resin was used to prepare epoxy ester resins having 40% and 50% oil content. Epoxy ester resin having 40% oil content was modified with urea‐formaldehyde and melamine‐formaldehyde resins for synthesis of epoxy ester–amino resin. Physical and chemical film properties of epoxy ester and modified epoxy ester resins were investigated. All the epoxy ester and modified epoxy ester films were having excellent adhesion, water, and salt water resistance properties. Modification of PET‐based epoxy ester resins with amino resin has significantly improved hardness, impact resistance, and alkaline and acid resistance of resin films. As a result, PET oligomers obtained from glycolysis of postconsumer PET bottles are suitable for manufacturing of amino‐resin‐modified epoxy ester resins that have improved physical and chemical surface coating properties. POLYM. ENG. SCI., 55:2519–2525, 2015. © 2015 Society of Plastics Engineers