1、Controlling the crystal morphology of high

In this study, two thermal treatment methods, isothermal annealing and isothermal crystallization, were utilized to control the crystal structure of HD-TPU. The effect of crystals on the physical foaming behavior of HD-TPU foams was examined.

2、APP/MAH

以马来酸酐-C9共聚微球 (MAH-C9)作为成炭剂,与聚磷酸铵 (APP)复配后制备无卤阻燃聚醚型热塑性聚氨酯 (TPU)复合材料,并探究APP与MAH-C9不同的质量比对TPU材料性能的影响。

3、Research on the induced crystallization behavior of high

Taking the issue of induced crystallization in the study of high-performance thermoplastic resin-based composites as the starting point, this article comprehensively reviews the research...

4、APP/MAH

摘要：以马来酸酐-C9共聚微球 (MAH-C9)作为成炭剂,与聚磷酸铵 (APP)复配后制备无卤阻燃聚醚型热塑性聚氨酯 (TPU)复合材料,并探究APP与MAH-C9不同的质量比对TPU材料性能的影响.结果表明,APP与MAH-C9之间有很好的协效作用,当APP/MAH-C9的质量比为9/1,阻燃剂的总添加量为10 ...

Enhanced foaming behaviors and compression properties of

In this work, to prepare the desired TPU foam and to gain insight into the influence of micro-crosslinking structure on their efect, cross-linked TPU foams were prepared and subsequently foamed by supercritical CO2 foaming technology.

Enhanced foaming ability of thermoplastic polyurethane by

This study investigated the effects of packing time in the mold-opening foam injection molding (MOFIM) technology on the crystallization behavior of hard segments in TPU and the cell morphology of TPU foams.

Journal of Applied Polymer Science

This study evaluated the influence of melt annealing on thermoplastic polyurethane (TPU) synthesized via reactive extrusion, aiming to enhance TPU melt crystallization behavior.

Sustainable PLA Bio

Morphological analysis reveals detailed toughening mechanisms, where integrating fibril TPU with CNC refines void structures and enhances fibril formations, leading to ductile cup-and-cone fracture behaviors. This configuration significantly improves ductility, promoting plastic deformation and forming microvoids and crazes.

热塑性聚氨酯的多晶型结晶行为和多重熔融峰现象

In this paper, the cooling crystallization, iso- thermal crystallization and melting behavior of TPU were studied through DSC.

超支化聚酰胺强化热塑性聚氨酯结晶及发泡性能的研究

In addition， the addition of HyPer generated a significant plasticizing effect on TPU， reducing its intrinsic viscosity， increa?sing its intermolecular mobility， and improving its crystallization rate and crystallinity.

Study on the Impact of C9 Resin on TPU Crystallization Speed

With the rapid development of technology, plastic materials have found widespread applications across various industries. Among them, thermoplastic polyurethane (TPU) has become one of the most important polymer materials due to its excellent physical properties, processability, and environmental friendliness. the slow crystallization rate of TPU materials limits their application in certain scenarios. To address this issue, researchers have begun exploring the impact of C9 resin on the crystallization speed of TPU.

I. Introduction to C9 Resin

C9 resin is a high-performance thermosetting resin characterized by excellent mechanical properties, chemical resistance, and thermal stability. In recent years, it has been widely used in aerospace, automotive manufacturing, and electronics. Due to its superior performance, C9 resin is considered an ideal modifier for TPU.

II. Impact of C9 Resin on TPU Crystallization Speed

1. Structural Features of C9 Resin

C9 resin contains a large number of aromatic structures, which provide excellent chemical and thermal stability. Additionally, its aliphatic components offer flexibility and processability. These characteristics enable C9 resin to form good compatibility when mixed with other resins.

2. Mechanism of C9 Resin’s Impact on TPU Crystallization

The aromatic structures in C9 resin can form hydrogen bonds with the carbonyl groups in TPU molecular chains, reducing intermolecular forces and facilitating chain movement. Meanwhile, the aliphatic structures in C9 resin introduce flexibility to TPU chains, enabling easier motion and accelerating crystallization.

3. Experimental Research

To validate the effects of C9 resin on TPU crystallization, researchers conducted a series of experiments. C9 resin was blended with TPU, and composites were prepared via melt spinning. The composites were then dried, cooled, and subjected to crystallization treatment. X-ray diffraction (XRD) and differential scanning calorimetry (DSC) were used to characterize the crystallization behavior.

The results showed that when the C9 resin content reached 5%, the crystallization temperature of the TPU/C9 composite decreased by approximately 10°C, and the crystallization time was shortened by 20%. This indicates that C9 resin significantly enhances the crystallization speed of TPU.

C9 resin, as a high-performance thermosetting resin, effectively accelerates the crystallization of TPU. By adjusting the C9 resin content, the crystallization rate of TPU can be precisely controlled. C9 resin holds promise as a critical pathway for TPU modification, offering improved performance for applications across various fields.