Recycled Polymers(再生聚合物)研究综述
Recycled Polymers 再生聚合物 - Herein, the effects of recycled polymers on the mechanical properties of additively manufactured specimens, specifically those derived by fused deposition modelling, are determined. [1] Thus, MSR re-extrusion improved the mechanical performance of recycled polymers by optimizing the microstructure. [2] Bio-composites made from recycled polymers and rice husk fibers (RHF) were melt-compounded via extrusion and compression molding. [3] Moreover, in order to improve the properties of concrete-based composite admixtures, which enhance the resistance to cracking, polymer fibres and recycled polymers have been researched. [4] The use of recycled polymers as bitumen modifiers contributes to extending their application at a competitive cost being also a more sustainable solution. [5] In addition, necessary testing methodology for understanding polymer variation in recycled polymers are established. [6] The aim of this study is to investigate the macroscopic use properties of 100% recycled polymers and compare them with the virgin materials. [7] The investigation shows a reduction in the tensile strength and an improvement in the tensile modulus of the developed composites as compared to the virgin and recycled polymers. [8] Finally, physicochemical investigations of recycled materials as gel permeation chromatography, melt flow rate, and differential scanning calorimetry suggest a high purity and indicate no degradation of the technical properties of the recycled polymers. [9] In conclusion, recycled polymers are plausible 3D printing feedstock alternatives as they possess acceptable mechanical performance and low emittance according to this study. [10] This is an option to bring recycled plastics back into the market and increase the versatility of products manufactured with recycled polymers. [11] The best mechanical properties were obtained for rye straw and polystyrene or recycled polymers, whereas the best hydrophobic properties were observed for rape straw combined with recycled polyethylene or polypropylene. [12] 4%, respectively, showing that the use of recycled polymers is a key approach to reduce the environmental impact of plastic components. [13] Hence, this paper aims to extend the knowledge concerning the re-processing of such recycled polymers, as a first step towards developing a more effective circular manufacturing economy. [14] Thus, the new instrument qualifies to characterize the chemical structure of recycled polymers, demanding more flexible analytical conditions than those previously developed for the virgin resin analysis. [15] The recycling of cellulose from cotton textiles would minimize the use of virgin crop fibers, but recycled polymers are generally inferior in mechanical performance to those made from virgin resins. [16] ABSTRACT Polymer properties along with recycling processes remain a constant challenge for post-recycled polymers. [17] By changing the amounts of the aforementioned components (recycled polymers and GO nanosheets), adhesive formulations were tested for tensile and single-lap shear strength applied at the interface between epoxy/carbon fiber and stainless steel. [18] The reuse of recycled polymers as bitumen modifiers can be an interesting alternative from both economic and environmental perspectives, but the incorporation of these materials into a neat binder (and their subsequent modification) is not always easy, and the end product does not always have the desired properties. [19] Wood wastes and by-products like sawdust, chips, bark and wood residues as well as recycled polymers can serve as raw materials for production of WPC. [20] The usage of recycled polymers for industrial purposes arises as one of the most promising methods of reducing environmental impact and costs associated with scrapping parts. [21] Sustainable composites, consisting of natural fibers, and/or recycled polymers have been developed as a way to increase the “green content” and reduce the weight of a vehicle. [22] Recycled polymers and biopolymers are receiving a great deal of attention these days. [23] This paper; therefore, presents a comparative review of the recycled polymers most commonly studied as bitumen modifiers: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), ethyl vinyl acetate (EVA), and ground tire rubber (GTR), in order to facilitate their selection and extend the use of the bitumen. [24] Past work has shown that particle material extrusion (fused particle fabrication (FPF)/fused granular fabrication (FGF)) has the potential for increasing the use of recycled polymers in 3D printing. [25] This study put emphasis on the development of an innovative and environmentally sustainable process based on supercritical fluid extraction (SCFE) to remove organic and inorganic contaminants that cause color and odor in waxes derived from recycled polymers. [26] The effect of talc on crystallization and mechanical properties composites based on the recycled polymers as nucleating agent or/and inorganic filler were studied. [27] It was shown that the technological additives improved the technological properties of recycled polymers: the mixing energy decreased when receiving compositions, the melt flow index values increased, the thermal properties did not deteriorate. [28] Total’s goal is for 30% of its plastics sales to come from recycled polymers by 2030. [29] The utilization of nanofiller to recycle waste polymers will enhance the mechanical, thermal and optical properties of the recycled polymers that are repeatedly degraded when they are managed via incineration and landfilling. [30] With the growing need to increase plastic recycling rates, Jagan Mohan Raj – Innovation Director, RPC bpi recycled products outlines a different approach to the use of recycled polymers. [31] From these recycled polymers, smooth polysiloxane nanofibers were prepared successfully via electrospinning. [32] This chapter describes the main aspects of this topic, with a focus on multilayer, oxo-biodegradable plastics, recycled polymers, printing inks, non-intentionally added substances (NIAS), oligomers, active packaging and nanomaterials. [33] The study revealed that the hardness and toughness for the recycled polymers were higher than those of corresponding virgin polymers. [34]在此，确定了回收聚合物对增材制造试样的机械性能的影响，特别是那些通过熔融沉积建模得出的试样。 [1] 因此，MSR 再挤出通过优化微观结构提高了回收聚合物的机械性能。 [2] 由回收聚合物和稻壳纤维 (RHF) 制成的生物复合材料通过挤出和压缩成型进行熔融复合。 [3] 此外，为了提高混凝土基复合外加剂的性能，从而增强抗开裂性，已经研究了聚合物纤维和再生聚合物。 [4] 使用回收聚合物作为沥青改性剂有助于以具有竞争力的成本扩展其应用，这也是一种更可持续的解决方案。 [5] 此外，建立了了解回收聚合物中聚合物变化的必要测试方法。 [6] 本研究的目的是研究 100% 回收聚合物的宏观使用特性，并将其与原始材料进行比较。 [7] 研究表明，与原始聚合物和回收聚合物相比，开发的复合材料的拉伸强度降低，拉伸模量提高。 [8] 最后，回收材料的物理化学研究，如凝胶渗透色谱法、熔体流动速率和差示扫描量热法，表明其纯度高，并且表明回收聚合物的技术性能没有退化。 [9] 总之，根据这项研究，回收聚合物是合理的 3D 打印原料替代品，因为它们具有可接受的机械性能和低发射率。 [10] 这是将再生塑料带回市场并增加用再生聚合物制造的产品的多功能性的一种选择。 [11] 黑麦秸秆和聚苯乙烯或回收聚合物的机械性能最好，而油菜秸秆与回收的聚乙烯或聚丙烯结合使用的疏水性能最好。 [12] 4%，分别表明使用再生聚合物是减少塑料部件对环境影响的关键方法。 [13] 因此，本文旨在扩展有关此类回收聚合物再加工的知识，作为发展更有效的循环制造经济的第一步。 [14] 因此，新仪器能够表征回收聚合物的化学结构，需要比以前为原始树脂分析开发的更灵活的分析条件。 [15] 从棉纺织品中回收纤维素将最大限度地减少原始农作物纤维的使用，但回收聚合物的机械性能通常不如由原始树脂制成的聚合物。 [16] 摘要 聚合物的性能以及回收过程对于回收后的聚合物来说仍然是一个持续的挑战。 [17] 通过改变上述组分（回收聚合物和 GO 纳米片）的量，测试粘合剂配方在环氧树脂/碳纤维和不锈钢之间的界面处的拉伸和单圈剪切强度。 [18] 从经济和环境的角度来看，将回收聚合物用作沥青改性剂的再利用可能是一个有趣的替代方案，但将这些材料掺入纯粘合剂（及其后续改性）并不总是容易的，最终产品并不总是具有所需的属性。 [19] 木材废料和副产品，如锯末、木片、树皮和木材残渣以及回收的聚合物，可以作为生产 WPC 的原材料。 [20] 将回收聚合物用于工业目的是减少与报废零件相关的环境影响和成本的最有希望的方法之一。 [21] 由天然纤维和/或回收聚合物组成的可持续复合材料已被开发为增加“绿色含量”和减轻车辆重量的一种方式。 [22] 如今，回收聚合物和生物聚合物受到了极大的关注。 [23] 这张纸;因此，对最常作为沥青改性剂研究的回收聚合物进行了比较回顾：聚乙烯 (PE)、聚丙烯 (PP)、聚氯乙烯 (PVC)、醋酸乙烯酯 (EVA) 和轮胎橡胶 (GTR)，以便以方便他们选择和扩大沥青的使用范围。 [24] 过去的工作表明，颗粒材料挤出（熔融颗粒制造（FPF）/熔融颗粒制造（FGF））具有增加再生聚合物在 3D 打印中使用的潜力。 [25] 本研究强调开发一种基于超临界流体萃取 (SCFE) 的创新且环境可持续的工艺，以去除有机和无机污染物，这些污染物会导致来自回收聚合物的蜡产生颜色和气味。 [26] 研究了滑石粉对以回收聚合物为成核剂或/和无机填料的复合材料结晶和力学性能的影响。 [27] 结果表明，工艺添加剂改善了再生聚合物的工艺性能：接收组合物时混合能降低，熔体流动指数值增加，热性能没有下降。 [28] 道达尔的目标是到 2030 年其塑料销售额的 30% 来自回收聚合物。 [29] 使用纳米填料回收废聚合物将提高回收聚合物的机械、热和光学性能，这些聚合物在通过焚烧和填埋进行管理时会反复降解。 [30] 随着对提高塑料回收率的需求不断增长，RPC bpi 回收产品创新总监 Jagan Mohan Raj 概述了使用回收聚合物的不同方法。 [31] 从这些回收的聚合物中，通过静电纺丝成功地制备了光滑的聚硅氧烷纳米纤维。 [32] 本章介绍了该主题的主要方面，重点介绍了多层、氧生物降解塑料、再生聚合物、印刷油墨、非有意添加物质 (NIAS)、低聚物、活性包装和纳米材料。 [33] 研究表明，回收聚合物的硬度和韧性高于相应的原始聚合物。 [34]