SBR is a synthetic rubber formed by the copolymerization of styrene and butadiene in the ratio of 3:1 by weight. It is manufactured by two processes: emulsion and solution, to form E-SBR and SSBR, respectively. SBR is used for various applications in the Tire, Footwear, Polymer Modification, and Adhesives and Other sectors.

Flexible plastics are a category of plastics that are thin, light, and easily stretchable, and yet retain barrier properties and have tear- and puncture-resistant characteristics. These properties make flexible plastics suitable for making packaging products. They are chemically inert, cheap, and visually appealing, which enhances the brand appeal of the product they are used to pack. Generally they are used to pack non-durable and fast-moving unit loads and have limited bulk industrial use with the exception of FIBCs. The key customers of flexible plastic packaging products are the F&B, Personal Care, and Pharmaceutical and Healthcare sectors.

A membrane is a type of selective barrier that is used to separate or concentrate the feed stream as it passes through the membrane, which selectively allows some constituents to pass as others are retained on the surface of the membrane. The constituents that are allowed to pass are known as permeates and those that are retained are known as concentrates or retentates. Different types of membrane are used in the Food industry depending on their pore size. The types of technology implemented for membranes include ultrafiltration, microfiltration, reverse osmosis, and nanofiltration. Other membrane technologies such as membrane contractors, electro dialysis, and pervaporation are also used but their market share is low.

Tires track their history back to the mid-1800s, at which time they were made of rubber, best known as solid tires. With time and new advances, solid tires were replaced by pneumatic tires, which were first used in automobiles by the Michelin brothers, who went on to become one of the prominent tire vendors in Europe. Over time, the Tire market has witnessed new technology breakthroughs and the entry of many vendors.

以热塑性聚氨酯弹性体(TPU)和有机硅橡胶(SIR)为基体,加入不同相容剂通过Hakke密炼机采用动态硫化的方法制备了热塑性弹性体(TPV),研究了不同相容剂对弹性体性能的影响。结果表明,KH550在TPV中相容性较好,并且当KH550乙醇溶液的质量分数为20%分散较好,力学性能优异;当基体树脂预热后加入KH550的加料顺序最优;当KH550含量为0.4 phr时拉伸强度较好且黏度最大;随着KH550含量的增加,弹性体熔体质量流动速率和压缩永久变形都逐渐降低。

简要介绍了塑件表面模内装饰技术的分类及其工艺流程,分别针对模内镶标注塑(IML)、模内镶件注塑(IMF)和模内转印(IMR)等工艺的成型方式、工艺特点、适用范围等进行了比较和说明。重点论述了装饰膜的材料和结构,并列举了部分装饰膜的应用;同时讨论了模内装饰技术对装饰膜塑胶片材和油墨的要求。最后,列举了目前国内外模内装饰技术中较为新颖的实际应用和工艺方法,展望了未来塑件表面模内装饰技术的发展趋势,并给出了一些建议。

分析了带有嵌件的眼镜支架的结构及成型工艺特点,设计了对应的注塑模模具,并利用CAE技术的塑料注射成型软件Moldflow对制件进行了预成型。制件注射过程中气穴较少、纤维取向内外层基本一致,制件性能稳定;缩痕指数表明制件的冷却相对均衡、残余应力较小。综合分析结果表明,塑件成型质量较好,一模四件的对称性分布模具结构简单合理,可行性好。

用溶液接枝聚合的方法在线型低密度聚乙烯(LLDPE)上接枝聚合极性单体甲基丙烯酸甲酯(MMA)制备LLDPE-g-PMMA,研究了反应时间、单体用量和引发剂用量对接枝反应的影响。结果表明,随着引发剂和单体量的增加,聚合物的接枝率增加,当引发剂质量分数为0.48%,单体比率为150%时,接枝率将达到26.1%。利用红外光谱(FTIR)、核磁共振碳波谱仪(13C-NMR)对其进行结构表征,证明PMMA分子链被接枝聚合到LLDPE上。使用X射线衍射仪(XRD)、差示扫描量热仪(DSC)对接枝聚合物的结晶性能进行了分析,发现接枝聚合没有改变晶型,但结晶焓由61.39 J/g降低到47.18 J/g。