NEXAMITE® represents a new technology of cost-effective polymer modification and compatibilization. Several compositions with many interesting properties in different areas have been proved. The following application table gives a general picture with some classical examples of how NEXAMITE® can be used in different cases on the whole value chain.
Table 1: NEXAMITE® value chain
NEXAMITE® technology improves melt viscosity, hydrolytic stability and heat resistance, useful in a variety of industries. The chemical, physical and mechanical properties, assosicated with the ease of formulating tough, machine-able materials give opportunities to use NEXAMITE® in a wide range of plastic materials and mold-making applications. Further, it contributes to the manufacture of composite materials targeting low energy/ high-speed trains and lightweight construction.
Figure 1: NEXAMITE® application examples
The renewable energy market requires high-performed materials to achieve strong stability and rigidity at minimal weight. NEXAMITE® makes it possible to develop fiber and foam materials that contributes many parts of wind turbine applications, like spinners, blades and nacelles.
Applications for NEXAMITE® exit in variuos specification in different markets, which ranges from our daily life, such as surfboards and gym mats, to modern industrial components like aircraft wings and rotor blades. NEXAMITE® technology contributes strongly in materials like foam and fiber that are widely applied in a large number of solutions like sandwich structures and composite materials.
CASE: Improve mechanical performance of foam core materials and blade shells in rotor blades
Foam and composite plastics are used in the sandwich construction of rotor blades to offer strength and rigidity while keeping minimal light weight. Today, as rotor blade size increases, it becomes even more important to provide high strength, stability and light weight.
Figure 2: NEXAMITE® applications in rotor blades
By using NEXAMITE® to control chain extension and branching with higher end viscosity at the same power consumption can be achieved. Resulting in more effective process and foam with extraordinary material properties, which plays a vital role in markets such as wind energy, aerospace and marine.
There are many materials that may benefit from NEXAMITE® formulations. The technology provides a tougher and stronger material than traditional ones. The addition of NEXAMITE®, as a reactive chain-extender, will result in the further improved elongation at break, as well as the tensile strength.
CASE: NEXAMITE® enhances mechanical performance of injection molded PLA
Greatly increased the elongation at break of the PLA/PBAT blends without sacrificing their high tensile strength were fabricated by melt mixing polymer blend with NEXAMITE® formulations.
Scanning electron microscopy results revealed that the PBAT particles became finer and were uniformly dispersed in the matrix when the compatibilizers were incorporated, which indicated that the interfacial bonding and compatibilization between PLA and PBAT were improved in the presence of the NEXAMITE® formulations. Compared with PLA/PBAT blends, the molecular weight of the blends were increased due to chain-extending reactions. Differential scanning calorimetry results suggested PBAT decreased the crystallization rate and crystallinity of PLA in the blends. Moreover, the glass transition temperature of PBAT was further decreased when the compatibilizers were used.
To get more information about the CASE, please read article: Influence of phthalic anhydride and bioxazoline on the mechanical and morphological properties of biodegradable poly(lactic acid)/poly[(butylene adipate)-co-terephthalate] blends, Weifu Dong, Benshu Zou, Piming Ma, Wangcheng Liu, Xin Zhou, Dongjian Shi, Zhongbin Ni, Mingqing Chen, 8 June 2013, Wiley Online Library, DOI: 10.1002/pi.4568
NEXAMITE® - phenolic resin
Several of bisoxazoline - phenolic resin have been formulated and commercialized. These materials are processable and they can be reinforced by the use of glass fibers.
The NEXAMITE® - phenolic resin possesses the low smoke and heat release requirement for interior components in aerospace, automotive, building and construction, etc. It performs over a wide range of temperature and outperform Epoxy and Phenolics in many important properties.
The figure 3 shows these properties of the NEXAMITE® - phenolic resin and other high performance materials.
Figure 3: Comparative properties of various high performance polymers ( GIC is fracture energy, TGA is thermo gravimetric analysis )
Read more about crosslinkable polyether-amide materials in the article: Advances in addition-cure phenolic resins, C.P. Reghunadhan Nair, Prog. Polym. Sci. 29 (2004) 401–498., DOI: 10.1016/j.progpolymsci.2004.01.004