Novel Polyurethane(新型聚氨酯)研究综述
Novel Polyurethane 新型聚氨酯 - water, alcohols, and amines) are of significant industrial importance, particularly for the development of novel polyurethanes and other useful polymers. [1] A novel polyurethane (PU)/Al/AAA composite coating was prepared by adding Al-based alloy powders, which were composed of Al and AAA powders. [2] This paper focuses on a novel polyurethane-based soft actuator that is fabricated by an electrospinning process. [3] water, alcohols, and amines) are of significant industrial importance, particularly for the development of novel polyurethanes and other useful polymers. [4] In the following study, ground plum stones and silanized ground plum stones were used as natural fillers for novel polyurethane (PUR) composite foams. [5] The aim of this study is to evaluate a novel polyurethane (PU)/gelatin nanofibers (GNFs) conduit’s potential combination with resveratrol (RVT) for sciatic nerve regeneration in the rat. [6] In this work, a novel polyurethane (PU-TBN) is synthesized by employing tetramethylpyrazine-nitrone (TBN) as end-group to endow polymers with dual functions of antioxidant activity and promoting endothelialization. [7] ABSTRACT In this study, novel polyurethane-based composites reinforced by hierarchical CNTs@SiO2-TiO2 were fabricated via in situ polymerization. [8] The review centers on the formation of hydroxyurethanes without the use of isocyanates on the basis of the reaction of cyclic carbonates with amines, the phosgene-free production of isocyanates by thermal decomposition of acylazides, and the prospects for using renewable plant-based raw materials for the production of novel polyurethanes. [9] This study reports on novel polyurethane/poly(2-chloro-5-methoxyaniline) (PU/PCMANI) blend and nanocomposite system for corrosion protection. [10] The novel polyurethane was prepared by a two-step bulk polymerization technique based on the molar ratios of the used constituents 1 : 3 : 2 for PTMG: HDI: MOCA, respectively The FTIR spectra indicated that the extent of phase separation decreased by increase in the SiO2 content From the DSC and XRD analyses, the existence of small crystalline areas within the soft and hard segments of matrix was proved High thermal stability of new nanocomposites was authenticated by a 90 °C increase in the decomposition temperature upon including the SiO2 particles into the polymer matrix By providing a longer diffusion path, a reduction in the permeation of penetrants occurred after the incorporation of SiO2 content By raising the temperature from 25 to 45 °C, the gas permeation value of CO2, O2 and N2 rose steeply: 35, 54 and 81% in neat PU and 49, 64 and 137% in PU containing 15 wt%, respectively Conversely, the obtained results for increasing the feed gas pressure from 6 to 10 bar revealed that the penetration of non-condensable gases, O2 and N2, decreased while the permeation rate of CO2 polar gas surged dramatically Nevertheless, a simultaneous increment in the selectivity amounts of both gas pairs was revealed. [11] A novel polyurethane was synthesized from NCO-terminated prepolymer with furfuryl amine, and cross-linked with bismaleimide via Diels-Alder (DA) reaction. [12]水、醇和胺）具有重要的工业意义，特别是对于开发新型聚氨酯和其他有用的聚合物。 [1] 通过添加由Al和AAA粉末组成的Al基合金粉末，制备了一种新型聚氨酯（PU）/Al/AAA复合涂层。 [2] 本文重点介绍了一种通过静电纺丝工艺制造的新型聚氨酯基软致动器。 [3] 水、醇和胺）具有重要的工业意义，特别是对于开发新型聚氨酯和其他有用的聚合物。 [4] 在接下来的研究中，李子碎石和硅烷化李子碎石被用作新型聚氨酯 (PUR) 复合泡沫的天然填料。 [5] 本研究的目的是评估一种新型聚氨酯 (PU)/明胶纳米纤维 (GNF) 导管与白藜芦醇 (RVT) 的潜在组合，用于大鼠坐骨神经再生。 [6] 在这项工作中，以四甲基吡嗪硝酮（TBN）为端基合成了一种新型聚氨酯（PU-TBN），赋予聚合物抗氧化活性和促进内皮化双重功能。 [7] 摘要 在这项研究中，通过原位聚合制备了由分级 CNTs@SiO2-TiO2 增强的新型聚氨酯基复合材料。 [8] 综述集中在环状碳酸酯与胺反应的基础上不使用异氰酸酯形成羟基氨基甲酸酯，通过酰叠氮化物的热分解无光气生产异氰酸酯，以及使用可再生植物原料的前景新型聚氨酯的生产。 [9] 本研究报告了新型聚氨酯/聚（2-氯-5-甲氧基苯胺）（PU/PCMANI）共混物和纳米复合材料体系用于防腐。 [10] 新型聚氨酯是通过两步本体聚合技术制备的，基于所用组分的摩尔比为 1:3:2，PTMG:HDI:MOCA，FTIR 光谱表明相分离程度随SiO2 含量 通过 DSC 和 XRD 分析，证明在基体的软段和硬段内存在小结晶区聚合物基体 通过提供更长的扩散路径，在加入 SiO2 含量后，渗透剂的渗透率降低 通过将温度从 25°C 提高到 45°C，CO2、O2 和 N2 的气体渗透值急剧上升：35、54和 81% 在纯 PU 和 49, 64 和 137% 在含有 15 wt% 的 PU 中，相反，将原料气压力从 6 巴增加到 10 巴所获得的结果表明，t不凝性气体 O2 和 N2 的渗透率下降，而 CO2 极性气体的渗透率急剧上升。然而，显示两种气体对的选择性同时增加。 [11] 以 NCO 封端的预聚物与糠胺为原料合成了一种新型聚氨酯，并通过 Diels-Alder (DA) 反应与双马来酰亚胺交联。 [12]
novel polyurethane foam
The aim of this paper is to develop a novel polyurethane foam system to enable the direct sandwich composite molding (D‑SCM) process for the production of CFRP sandwich structures by utilizing the resulting foaming pressure during the reactive polyurethane (PUR) foam system expansion for the impregnation of the CF reinforced face sheets. [1] In this study, a novel polyurethane foam (PU) nanocomposite adsorbent based on silane-modified magnetic iron-oxide nanoparticles (Fe3O4@APTES) is synthesized via a low cost and simple in situ polymerization method for the removal of arsenic ions from aqueous solutions. [2] This paper proposes a novel polyurethane foam-filled energy absorption connector with advanced geometry to dissipate energy. [3]本文的目的是开发一种新型聚氨酯泡沫系统，利用反应性聚氨酯 (PUR) 泡沫系统膨胀过程中产生的发泡压力，使直接夹层复合材料成型 (D-SCM) 工艺能够生产 CFRP 夹层结构。 CF 增强面板的浸渍。 [1] 本研究通过低成本、简单的原位聚合方法合成了一种基于硅烷改性磁性氧化铁纳米粒子（Fe3O4@APTES）的新型聚氨酯泡沫（PU）纳米复合吸附剂，用于去除水溶液中的砷离子。 [2] 本文提出了一种新型聚氨酯泡沫填充的能量吸收连接器，具有先进的几何形状来消散能量。 [3]
novel polyurethane nanocomposite
Novel polyurethane nanocomposite (PUN) materials containing different surface-functionalized mesoporous silica nanoparticles (MSNs) were prepared by in situ polymerization methodology. [1] This paper aims to design a novel polyurethane nanocomposite added with juniper and titanium dioxide (TiO2) through electrospinning process. [2]通过原位聚合方法制备了含有不同表面功能化介孔二氧化硅纳米粒子（MSN）的新型聚氨酯纳米复合材料（PUN）。 [1] 本文旨在通过静电纺丝工艺设计一种添加杜松和二氧化钛（TiO2）的新型聚氨酯纳米复合材料。 [2]