改善聚丙烯簿膜表面特性的方法

在聚丙烯薄膜表面涂覆一层结晶度较低,含极性基(或基团)的热塑性物质,从而形成一个所渭的过渡层,是解决聚丙烯薄膜的热粘合性及印刷性的有效方法。本文介绍了以氯化等规聚丙烯作为涂覆材质对聚丙烯薄膜进行涂覆处理的方法及其技术关键。     

进口共聚聚丙烯涂覆料的剖析

通过核磁共振碳谱、差示扫描量热、红外光谱、力学性能测试和凝胶渗透色谱分析等手段,研究了共聚聚丙烯涂覆料的结构特征。结果表明,,进口共聚聚丙烯涂覆料是含有聚乙烯长直链的乙丙无规共聚聚丙烯。     

我国涂覆级聚丙烯树脂的需求及生产技术现状

分析了目前国内对涂覆级聚丙烯的需求状况;介绍了生产涂覆级聚丙烯主要的方法,比较了工艺的优缺点,确定了一种最佳的生产方法。     

涂覆级聚丙烯专用料的研制及应用

涂覆级聚丙烯专用料的研制及应用王明珠王桂华（河北轻化工学院化工系，石家庄０５００１８）（石家庄市聚丙烯厂，０５００３１）随着涂覆级ＰＰ使用范围及使用量的逐步扩大，市场需求量日益增加，国内涂覆级ＰＰ货源十分紧张。为缓解供求矛盾，拓宽小本体ＰＰ树脂的使用...     

提高粘合和印刷性的涂复聚丙烯薄膜

文中介绍了几例涂覆聚丙烯薄膜的制法。其中包括涂覆材质液配方,化学反应机理,结构与性能间的内涵关系等。     

聚丙烯粉料直接涂覆法生产复合塑料编织袋技术探讨

介绍了聚丙烯粉料直接涂覆法生产复合塑料编织袋的工艺技术，讨论了原料和助剂对涂覆质量和生产过程的影响。结果表明：通过选择合适的混配料配方和适当的工艺条件，可以实现复合塑料编织袋的稳定生产，产品的涂覆质量符合国标要求。     

九江石化聚丙烯装置结束检修开工生产

4月16日，中国石化股份公司九江分公司聚丙烯装置结束检修，比计划提前一天进入开工生产阶段，18日顺利生产出了合格的聚丙烯产品。目前，九江石化聚丙烯装置处于满负荷生产，生产膜料T36F、拉丝T30S等透明聚丙烯专用料和涂覆料。     

埋地钢管外防腐复合涂层的生产工艺

介绍了三层聚丙烯外防腐,描述了其施工工艺和涂覆技术;在炎热地带或输送介质温度较高时,三层聚丙烯外防腐是理想的首选涂层体系,具有较广泛的应用前景。     

涂覆级聚乙烯、聚丙烯树脂开发现状及应用

综述了聚乙烯、聚丙烯涂覆级树脂的生产工艺、性能、加工及应用。     

我国涂覆级树脂生产状况及发展前景

综述了涂覆级低密度聚乙烯(LDPE)和聚丙烯(PP)的生产工艺、工艺参数、产品性能指标、基础性能评价、加工性能及应用领域。针对生产实际情况,论述了涂覆级LDPE和PP树脂对复合袋剥离强度的影响。今后应加强开发双功能的过氧化物,在较高的温度下,以较高的收率得到高相对分子质量涂覆级LDPE。寻求较低的熔点和较好的密封性能,是涂覆级PP的研究方向。     

Measurement of the adhesion of diamond films on tungsten and correlations with processing parameters

Adhesion between diamond films and tungsten substrates is reported as a function of the deposition processing parameters. Diamond films were grown by a hot filament method as a function of seven different processing parameters: substrate scratching prior to diamond deposition, substrate temperature, methane content of the input gas mixture, filament temperature, filament-substrate distance, system pressure, and total gas flow rate. Adhesion was measured by using a Sebastian Five A tensile pull tester. Testing was complicated by the non-uniformity of the film thickness, diamond quality, film cohesion, and surface preparation across the full substrate surface area. Various types of film failure mode were observed, which did not correlate with the film processing parameters. The measured adhesion values showed larger variations from point to point across the sample surface and from identically prepared samples than variations as a function of the film processing parameters. Weak correlations of adhesion with the processing parameters were found using statistical analysis of the results from multiple pulls on a large number of samples. The statistical results suggest that substrate preparation, gas flow rate, and gas pressure are the most important processing parameters affecting the film adhesion, while the temperature of the hot filament has little or no effect on the adhesion of the film. However, improvements in film processing and adhesion testing need to be made before true quantitative adhesion testing of high-quality diamond films can be accomplished.     

PVC压延双向拉伸膜生产技术

介绍了生产灯箱膜、大棚膜、土工膜及其它大型膜类的压延双向拉伸设备及生产工艺。     

改性LLDPE压花及印花薄膜的研制

研究了以EVA为改性剂、碳酸钙为填料的改性LLDPE压花及印花薄膜的表面处理方法 ,讨论了EVA、碳酸钙对薄膜性能的影响 ,并与PVC压花及印花薄膜进行了技术经济对比     

水基化铣可剥涂料碱化铣应用工艺研究

对以水为分散介质的化铣可剥涂料在化学铣切加工中的涂覆成膜、涂膜硫化、刻型及碱腐蚀加工应用工艺进行了研究,实验确定了适于水基化铣可剥涂料的应用工艺路径、工艺参数及化铣液配比。     

PVDC薄膜的阻隔性与加工技术

PVDC吹塑薄膜、层合膜和共挤出流延薄膜是高阻隔性的包装材料。PVDC树脂加工过程中易分解和它的结晶特性使它需采用特殊的加工设备和工艺。通过对薄膜生产过程的分步模拟,其结果解释了工艺中冷水槽、温水槽、拉伸比、室温存放中的有关结晶现象,有助于认识加工过程,指导PVDC产品的加工工艺及提高产品性能。     

夹网膜生产技术

阐述了涤纶工业长丝的织网原理,介绍了用塑料薄膜和涤纶工业长丝成型夹网膜的工艺和设备原理,夹网膜的生产工艺简单、操作方便、成本低、生产效率高。     

聚酰亚胺薄膜的加工方法

阐述了聚酰亚胺薄膜在加工方面的进展.主要从流延、沉积、拉伸、喷涂等4方面汇集了世界各大公司的加工方法和性能指标;比较了聚合单体.工艺方法、控制参数等对薄膜性能的影响;讨论了聚酰亚胺薄膜加工的发展动态。     

石墨纸-BaTiO_3/PI一体化复合薄膜的制备及研究

聚合物复合薄膜超级电容器因其可实现大面积制备、性能可靠等优点,引起了能源领域的广泛关注。如何实现导电层与介电层的一体化加工制备,是叠片式薄膜超级电容器的重要研究方向。本文介绍了以溶液混合法制备的钛酸钡/聚酰亚胺复合薄膜作为介电材料,以石墨纸作为电极材料以及复合薄膜的载体,利用提拉法制备石墨纸-钛酸钡/聚酰亚胺一体化复合薄膜,实现导电层与介电层直接成型的一体化制备过程。利用红外(FT-IR)、扫描电镜(SEM)、EIS和LCR电桥仪对复合薄膜进行表征分析。实验结果表明聚酰亚胺亚胺化完全,钛酸钡在复合薄膜中分散良好,复合薄膜的介电损耗非常小,很好地满足了高介电材料的应用要求。     

离子交换树脂在ECP-2工艺加工药液回收处理中的运用

电影洗印厂大量的废水和废液的排放,会造成严重的环境污染。保护生态环境,是我们每个生活在这个地球上人的共同责任。为了解决这个问题,洗印厂将彩色显影液和停显液经过回收处理再循环使用,从废液中提取CD2的含量,这对环保和经济上都是有益的。本文从使用离子交换树脂的原理、阴离子交换树脂净化彩色显影液、阳离子交换树脂净化停显液、停显液里CD2含量的分析方法和离子交换树脂的运用作了较详细的叙述。     

Adhesive properties of heat-sealed EVAc/PE films in dependence on recipe,processing, and sealing parameters

The investigated peel system in this study consists of a polyolefine-based, coextruded, three-layer film having ethylene-vinyl acetate (EVAc) copolymer at the interface, heat sealed against a biaxial-oriented polyethylene terephthalate film. This system can primarily be found in the packaging industry offering a residue-free and non-destructive peel behavior. The peel force required to separate the joint depends on the mass fraction of vinyl acetate (VAc) in the EVAc copolymer, the processing conditions in the blowing process of the PE/PEVAc film, and on the sealing parameters. In dependence on the processing conditions and sealing parameters, the standard peel system with EVAc copolymer containing 18 wt.% VAc was investigated. The processing parameters were varied among the processing line of the blown film and their influence on the peel properties were studied. As processing parameters the screw speed within the extruder and the resulting layer thickness, the cooling behavior of the film bubble and the blow-up ratio (BUR) of the film bubble were investigated. The effect of pretreatment conditions was also investigated. The investigations revealed a significant dependence of the peel force on the pretreatment conditions. Processing conditions and the VAc content have a minor impact on the peel properties.