Page 64 - 《橡塑技术与装备》英文版2026年2期

HINA R&P TECHNOLOGY AND EQUIPMENT

than that of pure PC even after outdoor exposure. resistance (continuous use temperature > 220°C) adapts to the
The SoftBank NAO robot utilizes PC/ABS for its shell high-temperature working environment of robot servo motors
and structural components. The heat resistance and processing and other components, preventing thermal deformation that can
fluidity of PC/ABS enable it to meet the molding requirements lead to performance degradation. Its high heat resistance and
for complex-shaped parts of robots, while providing reliable dimensional stability make it the preferred material for robot
structural support and impact resistance protection. Shenkai servo motor connectors, ensuring stable operation of precision
Hong and Leju Robotics have launched a teaching humanoid electronic components under complex working conditions.
robot shell with a composite design of aluminum alloy and LCP's electrical insulation and low dielectric constant serve
PC/ABS plastic materials. The PC/ABS part primarily meets as a bridge for signal and electrical connections in high-
the requirements for lightweight and flexible design of the speed connectors, playing a key role in data transmission
shell, while the aluminum alloy enhances structural strength, within and outside robot systems, ensuring high-frequency
achieving a lightweight body weighing 1.73kg. PC/ABS signal transmission efficiency. LCP meets the lightweight and
has high impact strength and rigidity, which can withstand flexibility requirements of artificial muscles, simulating human
dynamic loads during robot movement, and performs well in muscle contraction and extension, helping robots achieve fine
joint connectors and shell protection. and natural movements. It is used to create electronic skin,
PC/ABS exhibits excellent melt flowability, making enhancing robots' environmental perception capabilities. It
it suitable for injection molding of facial shells and sensor is suitable for producing high-precision, high-reliability key
brackets. Its temperature resistance (heat distortion temperature sensing components such as pressure sensors and temperature
of 110~135 ℃) and UV resistance make it suitable for use sensors, supporting precise control and interaction of robots.
in both indoor and outdoor scenarios. With surface treatment LCP's low water absorption rate and dimensional stability
compatibility, it can be directly subjected to surface decoration ensure that component accuracy is not affected in humid
processes such as spraying and electroplating, meeting the environments or during long-term operation. Its weather
personalized appearance requirements of robots. resistance and radiation resistance make it suitable for use in
2.6 LCP open environments, enhancing the accuracy of robot motion
Liquid Crystal Polymer (LCP) is a kind of intermediate control. LCP has a higher melting point and good fluidity,
polymer between solid crystallization and liquid, with one- enabling injection molding, reducing the weight of the robot
dimensional or two-dimensional order in its molecular body compared to metal materials. If reinforced with glass
arrangement. It exhibits liquid crystallinity in the molten fiber, carbon fiber, or other materials, its performance far
state and is a new type of thermoplastic polymer material. exceeds that of other engineering plastics, enhancing endurance
The molecular structure of LCP contains rigid benzene rings, and meeting structural load requirements.
providing excellent heat resistance, chemical resistance, and 2.7 UHMW-PE
mechanical strength. LCP has an irregularly regular fibrous Ultra-high molecular weight polyethylene (UHMW-
structure, and its reinforcement with glass fiber, carbon fiber, PE) is a kind of linear structure polyethylene material with a
etc. far exceeds that of other engineering plastics. With a molecular weight exceeding 1 million. It possesses excellent
dielectric constant (10 GHz) of 2.9, a dissipation factor (10 properties such as ultra-high strength, wear resistance, and low
GHz) of 0.0025, a melting temperature (DSC) of 330 ℃, and a temperature resistance, and is widely used in multiple fields.
water absorption rate (23 ℃.24 h) of 0.04%, LCP has become Its specific strength is 15 times that of high-quality steel, 2.6
a key material support for core components of humanoid robots times that of carbon fiber, and 1.7 times that of aramid fiber.
due to its comprehensive properties such as high strength, heat Furthermore, its elongation at break is higher than that of
resistance, low water absorption rate, and excellent electrical carbon fiber and aramid, and it exhibits good flexibility and can
insulation. maintain stable mechanical properties under high strain rates
LCP finds application in humanoid robots. Its high heat and low temperature environments. UHMW-PE also possesses

·20· Vol.52，No.2