With its unique physical and chemical properties, liquid silicone rubber (LSR) has become an important material in the field of 3D printing, and has shown disruptive application potential in many fields such as medical, industrial, and consumer electronics.Its core advantages lie in thermal stability, biocompatibility, flexibility and customization. Combined with 3D printing technology, it breaks through the limitations of traditional manufacturing.
Customized breakthroughs in the medical field
In the manufacture of medical implants and auxiliary equipment, 3D printing of liquid silicone rubber has realized the landing of personalized medical care.For example, the oily microgel support printing technology developed by the University of Florida can manufacture complex structures such as implantable catheters and pressure-sensitive valve drain pipes. These devices can be customized according to patient anatomical data, shortening the production cycle to several hours. Through the optimization of dynamic pressure distribution, the wearing comfort is significantly improved.
Flexible innovation in industrial and consumer electronics
In the industrial field, 3D printing of liquid silicone rubber has promoted the lightweight and functional integration of seals, gaskets and other parts. It can print ISO-certified medical-grade silicone, its anti-aging properties are comparable to injection molded parts, and there is no need for expensive molds.In terms of consumer electronics, through two-component static mixing and thermal vulcanization, the printing of color transparent silicone parts is realized, which is used in smart watch straps, wearable sensors and other scenes, taking into account the beauty and functionality.
Technological iteration and breakthroughs in Materials Science
Material formulation optimization is the key to 3D printing of liquid silicone rubber. Through the low-viscosity design and unique rheology, high-precision printing is achieved, while maintaining the temperature resistance and resilience of silicone.
Future trends: from prototype to large-scale production
With the emergence of innovative processes such as dynamic molding technology and multi-material printing, liquid silicone rubber 3D printing is moving from prototyping to large-scale production. , The silicone is directly injected into the powder bed through the print head, without the need for a support structure, and the integrated molding of complex internal channels can be realized.This trend will further reduce the manufacturing cost of customized medical equipment and flexible electronic products, and promote the popularization of the “manufacturing on demand” model.
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Injection liquid silicone rubber IOTA 9150-40B - IOTA CORPORATION LTD. 
