Page 55 - 《橡塑技术与装备》英文版2026年1月

SPECIAL AND COMPREHENSIVE REVIEW

in Q/ZZ 21039 (Various Colors of Automotive to firmly adhere to the surfaces of metals, composite
Top Coat). Moreover, it is convenient for large- materials, and other materials, forming a strong
scale as sembly line production and has good protective film. Currently, due to the late start of
compatibility and adhesion with existing automotive research on polyurea elastomer materials in China,
paint systems. The modified polyurea paint has there are still issues with low strength, impact
been tested on bus roofs for one year, showing no resistance, conductivity, thermal conductivity, and
discoloration or powdering. It not only completely other properties, which cannot fully meet the strict
solves the problems of corrosion prevention and requirements of the aerospace industry for materials.
waterproofing but also has heat insulation, damping, Therefore, polyurea elastomer has not been widely
and noise reduction functions. Due to its excellent used in the field of aircraft in China.
physical and chemical properties and almost zero
VOC emissions, nano-modified aliphatic polyurea 3 Conclusion
paint will inevitably gain increasing attention in the This paper summarizes the synthesis,
automotive industry. modification, and research progress of polyurea
2.4 Application of polyurea in high-end fields elastomers in various application fields both

With the innovation of production technology domestically and internationally, with a focus on the
and optimization of quality, polyurea has broad discussion of modification and development in each
application prospects in high-end fields such as field. The polyurea material system is diverse, and
electronics, medical care, and aerospace. research and testing methods vary. Existing research
L i ne a r di e l e c t ri c pol yure a pol ym e rs, has gained some basic understanding of polyurea
characterized by their high dipole moment and elastomers, but domestic research on polyurea
di pol e de nsi t y, c a n m a i nt a i n a hi gh di e l e c t ri c elastomers is not deep enough, and it mostly
constant with low dielectric loss, achieving high leans towards engineering applications, with less
energy storage density. Due to their advantages exploration in high-end fields. In view of this, the
such as low manufacturing cost, low dielectric loss, following directions for future research on polyurea
high breakdown strength, and high reliability, they elastomers are proposed:
have become highly promising materials for electric （ 1 ） Clarify the relationship between the
energy storage. structure and properties of polyurea elastomers,
The presence of dynamically hindered urea conduct qualitative and quantitative research on
bonds in polyurea endows it with controllable polyurea microphase separation, and establish a
hydrolysis properties, making polyurea dry gel unified and systematic characterization method.
(Polyu) a versatile carrier often used to provide （2）The research and development of polyurea
high drug loading and controlled release, potentially systems should continue to focus on molecular
becoming an ef fective alternative to classic structure design or material modification tailored to
polyacrylate, polyester, or polyamino acid drug different application environments, service lifetimes,
delivery nanosystems. adhesion, and other performance requirements, in
Ai rc ra ft a re subj e c t e d t o va ri ous e x t re m e order to optimize the polyurea molding process.
m echanical stresses and harsh environmental （3）Polyurea elastomers are easy to process,
conditions. Due to its excellent properties, polyurea cost-effective, and have a wide range of applications.
elastomer is suitable for structural components, parts, However, research in high-end fields such as
and surface protection of aircraft and spacecraft. At electronics and aerospace is still in its infancy and
the same time, its good adhesion property allows it has not yet been industrialized.

Vol.52，2026 ·9·