2 results about "Polymeric liquid" patented technology

The application discloses a kind of double-layer controllable crack material preparation method and application, belong to new material preparation field, the preparation method includes: the A component of Ecoflex silicone rubber is mixed with B component, and Ecoflex is obtained after being treated by defoaming polymerization liquid;The main agent of polydimethylsiloxane is mixed with curing agent, and polydimethylsiloxane is obtained after being treated by defoaming polymerization liquid;Ecoflex polymerization liquid is injected into mould, and is cured at first temperature for first preset time, and form semi-cured or solidified flexible bottom layer, and form Ecoflex / PDMS double-layer composite film;Indentation is applied to the predetermined area of double-layer composite film, and the film is pre-stretched, so that polydimethylsiloxane surface layer generates directional through crack along indentation;In the state of keeping pre-stretching or releasing strain, conductive material is deposited on the surface of film containing crack, and conductive network is formed, to obtain flexible strain sensor.The application is simple, low in cost and suitable for large-scale promotion.

A polymerizable liquid that can be used for producing three-dimensional objects by methods of additive manufacturing is disclosed. The polymerizable liquid may comprise: (a) a blocked or reactively blocked polyurethane prepolymer; (b) (optional) a reactive diluent; (c) a blocked or reactively blocked curing agent; (d) a photoinitiator; and (e) (optional) a blocked or reactively blocked diisocyanate. The method using such polymerizable liquid to form three-dimensional objects is also described.