EVA和BSC的比较与分析研究

文章介绍了EVA和BSC两种业绩评价方法,通过对其相关概念的引入、EVA和BSC各自适合的企业以及整合的相关性、可行性的分析。     

1 000 t/a书籍装订热熔胶技术经济分析

介绍了书籍装订热熔胶生产工艺及产品的技术指标，对1000t/a生产装置的投资与产品成本进行了核算。分析结果表明，总投资110万元，年利润达266万元。     

EVA基质PTC特性材料制备与导电机理分析

本文简述了以EVA为基质材料制备有机PTC特性材料的实验,实测了样品有关特性,并用非线性回归方法讨论了其导电机理.这对指导温度传感器的设计有一定帮助.     

硅烷交联型复合半导电塑料

对于硅烷交联型复合半导电塑料的研究表明，合理的选择EVA，炭黑，交联剂，引发剂，催化剂的种类和适宜的用量，仅仅是提高接枝和凝胶质量分散的必要条件，体系环境的酸碱度才是可以交联的充分条件，只有在体系的环境呈现出中性或弱的碱性时，硅烷才可能与PE和EVA充分接枝和交联。     

纸塑复膜胶的研究进展

介绍了双组分聚氨酯、SBS、EVA、聚丙烯酸酯等几种纸塑复膜胶的特点、性能和改性方法，指出水基化、高固含量及复膜胶的改性将是纸塑复膜胶的发展方向。     

EVA／EPDM／PVC三元聚合物合金软质泡沫体的制备及其在复合衬垫中的应用

采用物理共混以及化学交联模压发泡成型工艺制备聚乙烯－醋酸乙烯酯（ＥＶＡ）／乙丙橡胶（ＥＰＤＭ）／聚氯乙烯（ＰＶＣ）三元聚合物合金软泡沫体，并制成贴布复合衬垫。讨论了该体系的相容性，动态共交联与发泡的适配，以及贴布复合，造型等问题，结果表明，该衬垫可完合替代国外同类先进产品。     

Heat Induced Structure Modifications in Polymer‐Layered Silicate Nanocomposites

Summary: The success of the use of layered silicates in polymer nanocomposites, to improve physical and chemical properties is strictly related to a deeper knowledge of the mechanistic aspects on which the final features are grounded. This work shows the temperature induced structural rearrangements of nanocomposites based on poly[ethylene‐co‐(vinyl acetate)] (EVA) intercalated‐organomodified clay (at 3–30 wt.‐% silicate addition) which occur in the range between 75 and 350 °C. In situ high temperature X‐ray diffraction (HT‐XRD) studies have been performed under both nitrogen and air to monitor the modifications of the nanocomposite structure at increasing temperatures under inert/oxidative atmosphere. Heating between 75 and 225 °C, under nitrogen or air, causes the layered silicate to migrate towards the nanocomposite surface and to increase its interlayer distance. The degradation of both the clay organomodifier and the VA units of the EVA polymer seems to play a key role in driving the evolution of the silicate phase in the low temperature range. The structural modifications of the nanocomposites in the high temperature range (250–350 °C), depended on the atmosphere, either inert or oxidizing, in which the samples were heated. Heating under nitrogen led to deintercalation and thus a decrease of the silicate interlayer space, whereas exfoliation was the main process under air leading to an increase of the silicate interlayer space.

Heat induced structural modification of EVA‐clay nanocomposite under nitrogen and air.     

Preparation and properties of microcapsule with EVA core‐PU shell structure

Microcapsule with poly(ethylene‐co‐vinylacetate) (EVA) core‐polyurethane (PU) shell structure was synthesized by interfacial polymerization in aqueous polyol dispersion with ethylene diamine as the chain extender of toluene diisocyanate in poly(vinyl alcohol) aqueous solution as the stabilizing agent. The effects of polyol constituent on the average particle size and distributions, morphologies, color strength, and friction fastness of core‐shell particles were investigated to design microcapsule. The friction fastness of printed fabrics with EVA core‐PU shell microcapsules became the increase to 4–5 grades. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 893–902, 2007     

挤出复合取聚烯烃材料用粘合剂

研制一种适用于低温挤出复合聚烯烃材料用的粘合剂，即在变熔融指数树脂链上，接上异氰酸酯极性基团。其复合强度大于５Ｎ／１５ｍｍ，热合强度大于５０Ｎ／１５ｍｍ，且无毒、无异味、耐γ射线照射、工艺性能好。