41 results about "Polymeric liquid" patented technology

A method of forming a three-dimensional object (31) includes the steps of: (a) providing an apparatus including a carrier (15), a light transmissive window (12) having a build surface, polymerizable liquid (21) on the build surface, and a growing object (31) on the carrier, the growing object produced by light polymerization of the polymerizable liquid; (b) vertically reciprocating the carrier (15) with respect to the build surface in an upstroke and a downstroke, the downstroke being shorter than the upstroke, to form a build region between the growing object and the build surface, and to fill the build region with the polymerizable liquid, while also: (i) sensing force exerted between the carrier and the build surface through the growing object (31) and the polymerizable liquid (21) during the upstroke; and (ii) modifying the speed, acceleration, or both speed and acceleration of the upstroke in response to the sensed force so that the sensed force approaches a predetermined target force; then (c) irradiating the build region with light through the light transmissive window to form a new portion of the object from the polymerizable liquid on the growing object; and then (d) repeating steps (b) through (c) to form additional portions on the growing object until the three-dimensional object is formed.

The invention discloses a succinonitrile-based gel polymer electrolyte as well as a preparation method and application thereof, belongs to the technical field of battery electrolytes, and solves the problem that a traditional solid electrolyte cannot meet the requirements of high ionic conductivity, high electrochemical window and high thermal stability at the same time. The preparation method comprises the following steps: mixing sodium difluoro (oxalate) borate, polyethylene glycol dimethacrylate and succinonitrile to obtain a mixture, and stirring the mixture at room temperature until a transparent polymerizable liquid is obtained; adding a photoinitiator into the obtained polymerizable liquid to form a transparent and uniform precursor; and infiltrating the precursor into a cellulose diaphragm, forming a solid polymer film through photopolymerization, then putting the solid polymer film into an organic electrolyte, and infiltrating to obtain the succinonitrile-based gel electrolyte. The gel-based electrolyte disclosed by the invention has the advantages of excellent thermal stability and relatively high conductivity, also has excellent sodium stability, and has a good application prospect.

A method of forming a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid comprising a mixture of: (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light through the optically transparent member to form a solid blocked polymer scaffold and advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, with the intermediate containing the second solidifiable component; and then (d) solidifying and / or curing the second solidifiable component to form from said three-dimensional intermediate the three-dimensional object.

The present invention addresses the problem of providing a cured film-forming composition for forming a cured film for forming an alignment material which has excellent solvent resistance, can align polymerizable liquid crystals with high sensitivity, and has little liquid crystal rejection. [Solution] A composition for forming a cured film, an alignment material, and a phase difference material. The composition for forming a cured film contains (A) a compound having a photo-alignment group, (B) a polymer having a structural unit having an N-hydroxymethyl group or an N-alkoxymethyl group, and (C) a cyclodextrin derivative in which some or all of hydroxyl groups are modified.

To provide polymerizable liquids which, in some embodiments, can produce 3D printed articles of high resolution and desirable mechanical properties.SOLUTION: In one aspect, a polymerizable liquid comprises an acrylate component, a polymeric additive, and a monomeric curing agent, where the acrylate component and monomeric curing agent are copolymerizable upon exposure to light. If being copolymerizable, the acrylate component and monomeric curing agent can form a copolymer. As described further herein, the monomeric curing agent can cause further reaction of the copolymer with one or more crosslinking species to link the copolymer with one more polymeric networks.SELECTED DRAWING: None

Described herein are polymerizable liquids for 3D printing applications that, in some embodiments, impart flame retardancy and / or flame retardant properties to articles printed from the liquids. The polymerizable liquids can also impart desirable mechanical properties to the articles. In some embodiments, the polymerizable liquids include a brominated acrylate component and a curable isocyanurate component in an amount of at least 5 wt% based on the total weight of the polymerizable liquid. Further, described herein are methods of printing three-dimensional articles using the polymerizable liquids.

The application discloses a kind of equipment, method and nonvolatile storage medium for forming three-dimensional object.It relates to the field of 3D printing technology, the equipment includes: forming platform, three-dimensional object is formed on forming platform;Tray, forming platform and the forming surface between tray form for printing area;Optical module, for irradiating printing area;Controller, for controlling forming platform movement in printing process, so that forming platform and polymerizable liquid contact;Detection component, for obtaining liquid change state in the process that forming platform and polymerizable liquid contact;Controller is used to determine whether liquid layer thickness tends to be stable according to liquid change state, and controls optical module to irradiate printing area when liquid layer thickness tends to be stable.The application solves the technical problems that the pre-exposure waiting time applicability is poor and the hollow or printing layer thickness is not uniform in the related art based on the experience value to determine whether 3D printing ends exposure pre-waiting and enters exposure phase.

A high pressure mixing head for continuously producing polymeric foam comprises a body including a mixing chamber and injectors for injecting two polymeric liquids. The mixing head also includes a delivery duct which is disposed transversely to the mixing chamber, wherein a rod is slidably received in an internal passageway of the delivery duct. An alternate delivery duct is also included. The delivery duct and the alternate delivery duct are in flow communication with the mixing chamber via a switchable flow connection, and a control unit is configured to control the switchable flow connection and the positions of the rods in the delivery duct and the alternate delivery duct such that flow from the output opening of the mixing chamber can be selectively directed either to the delivery duct or to the alternate delivery duct.

The present disclosure relates to the technical field of 3D printing, and provides a device and method for forming a three-dimensional object, and a non-volatile storage medium. The device comprises: a forming platform on which a three-dimensional object is formed; a tray, a printing area being formed between the forming platform and a construction surface of the tray; an optical module, used for irradiating the printing area; a controller, used for controlling the forming platform to move during printing, so that the forming platform is in contact with a polymerizable liquid; and a detection assembly, used for acquiring a liquid change state during the contact between the forming platform and the polymerizable liquid. The controller is used for determining, on the basis of the liquid change state, whether the thickness of a liquid layer tends to be stable, and when the thickness of the liquid layer tends to be stable, controlling the optical module to irradiate the printing area. The present disclosure solves the technical problem in the related art of easy occurrence of a void or uneven printing layer thickness due to poor applicability of pre-exposure waiting time caused by whether to end pre-exposure waiting and enter an exposure stage in 3D printing being determined on the basis of an empirical value.

A method of forming a three-dimensional object, is carried out by (a) providing a carrier and a build plate, the build plate comprising a semipermeable member, the semipermeable member comprising a build surface with the build surface and the carrier defining a build region therebetween, and with the build surface in fluid communication by way of the semipermeable member with a source of polymerization inhibitor; (b) filling the build region with a polymerizable liquid, the polymerizable liquid contacting the build surface, (c) irradiating the build region through the build plate to produce a solid polymerized region in the build region, while forming or maintaining a liquid film release layer comprised of the polymerizable liquid formed between the solid polymerized region and the build surface, wherein the polymerization of which liquid film is inhibited by the polymerization inhibitor; and (d) advancing the carrier with the polymerized region adhered thereto away from the build surface on the build plate to create a subsequent build region between the polymerized region and the build surface while concurrently filling the subsequent build region with polymerizable liquid as in step (b). Apparatus for carrying out the method is also described.

Provided herein according to some embodiments is polymerizable liquid useful for the production of a three-dimensional object by additive manufacturing, said polymerizable liquid comprising a mixture of: (a) at least one photopolymerizable component; (b) a photoinitiator, (c) at least one heat polymerizable component; and (d) heat expandable microspheres. A method of making a three-dimensional object from such a polymerizable liquid by additive manufacturing and objects so produced are also provided.

The invention relates to a device (2) for additive synthesis via multiphoton polymerisation in a printing volume referred to hereinafter as a voxel (30), the device comprising a print head (21) comprising a body (211) in which a plurality of channels (2111, 2112, 2113, 2114) is formed, each of the channels being configured to allow a polymerisable liquid (40) to flow from an inlet to an outlet, characterised in that each of the channels of the plurality of channels comprises an inlet (2111a, 2112a, 2113a, 2114a) and an outlet (2111b, 2112b, 2113b, 2114b) that are distinct from those of the other channels, and in that the device comprises an alignment module (22) configured to move the print head so as to position the outlet of one of the channels of the plurality of channels opposite the voxel.

A cryostat is provided for housing for a superconducting wired circuit. The cryostat has a dividing partition (10) delimiting two internal spaces; a first and a second opening situated one on each side of the dividing partition and each configured to fix one end of a cryogenic jacket surrounding at least one superconducting wire (21a) and to allow the superconducting wire to pass into the internal spaces. A third outlet opening is provided for a cooling fluid circulating in the cryogenic jacket fixed to the first opening. A fourth inlet opening is for a cooling fluid circulating in the cryogenic jacket fixed to the second opening. The dividing partition (10) incorporates a cavity forming a partition feedthrough (T) allowing the superconducting wire to pass through and sealed against the cooling fluids by the injection, once the wire has been fed through, of an electrically insulating material (17) in polymerizable liquid form, via an access opening (16) providing access to said cavity.

The present invention relates to a polymerizable liquid composition for the manufacture of an optical article, comprising: a) at least one allyl monomer or oligomer, b) at least one initiator for the polymerization of the allyl monomer or oligomer, and c) at least one lake pigment comprising an organic ionic colorant and at least one compound comprising a metal atom having an opposite charge to that of the organic ionic colorant, d) wherein even if the lake pigment is in the form of particles dispersed in the composition, the lake pigment is not comprised in nanoparticles, which are not the lake pigment itself.

Disclosed is a polymerizable liquid composition for the manufacture of an optical article, including: a) at least one allyl monomer or allyl oligomer, b) at least one initiator for the polymerization of the allyl monomer or allyl oligomer, and c) at least one lake pigment including an organic ionic colorant and at least one compound including metal atoms having a charge opposite to that of the organic ionic colorant, d) wherein the lake pigment is not contained in nanoparticles, which are not the lake pigment itself, if the lake pigment is in the form of particles dispersed in the composition.

This invention relates to functionalized polymeric liquid polysiloxane materials comprising a non-organic functionalized Q-type siloxane moiety and a mono-organic functionalized T-type siloxane moiety, wherein the material contains a limited amount of quaternary Q-type siloxanes relative to the total Q-type siloxane species. 2 - and / or Q 3 The invention relates to a type-1 siloxane cyclic species, possessing a functionalized degree of polymerization and a T-to-Q-ratio. It also relates to a method for producing polymeric liquid polysiloxane materials and related uses of such materials.

Described herein are additives for three-dimensional build materials or inks that, in some embodiments, can impart one or more structural reinforcements to articles printed with the build materials. In one aspect, a polymerizable liquid includes at least one additive including a plurality of cyclizable polymerizable functional groups separated by an aliphatic linker or an alkylene oxide linker.

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.

Title: Multi-material device for additive synthesis by multi-photon polymerization The invention relates to a device (2) for additive synthesis by multi-photon polymerization at the level of a printing volume hereinafter called voxel (30), comprising a printing head (21) comprising a body (211) in which a plurality of channels (2111, 2112, 2113, 2114) are formed, each of the channels being configured to allow the flow of a polymerizable liquid (40), from an inlet to an outlet, characterized in that each of the channels of the plurality of channels comprises an inlet (2111a, 2112a, 2113a, 2114a) and an outlet (2111b, 2112b, 2113b, 2114b) distinct from those of the other channels and in that the device comprises an alignment module (22) configured to move the head printing so as to position the output of one channel of the plurality of channels opposite the voxel. Figure for abstract: Fig.4

Methods and apparatus comprising a dewetting material and a polymerization liquid that are immiscible and dewetting, and can be used for the formation of three-dimensional objects, wherein the method does not require a dead zone. Additionally, methods and apparatus that employ the use of a flowing dewetting material to provide a shearing interface to reduce interfacial adhesive forces.

The present description provides a reversibly end-capped reactive end-capped polyurethane prepolymer, a polymerizable liquid, and a 3D printing method. The reversibly end-capped reactive end-capped polyurethane prepolymer comprises a reactive end-capping group, a polyurethane prepolymer, and an independent protecting group. The polymerizable liquid comprises at least one type of the described reversibly end-capped reactive end-capped polyurethane prepolymer, and / or at least one type of reversibly end-capped reactive end-capped polyisocyanate, each type of reversibly end-capped reactive end-capped polyisocyanate comprising a reactive end-capping group, a polyisocyanate and an independent protecting group, as well as a reactive diluent and a photoinitiator. The polymerizable liquid does not contain an independent curing agent, which improves the overall stability of the polymerizable liquid.

Polymerizable liquids are described herein which, in some embodiments, can produce 3D printed articles of high resolution and desirable mechanical properties. In one aspect, a polymerizable liquid comprises an acrylate component, a polymeric additive, and a monomeric curing agent, wherein the acrylate component and monomeric curing agent are copolymerizable upon exposure to light. In being copolymerizable, the acrylate component and monomeric curing agent can form a copolymer. As described father herein, the monomeric curing agent can enable further reaction of the copolymer with one or more crosslinking species to link the copolymer with one more polymeric networks.

The disclosure describes a polymerizable liquid that includes a reactive oligomer and a reactive monomer. The polymerizable liquid is an energy polymerizable liquid hardenable by a single reaction mechanism forming a Photoplastic material. The disclosure further describes a method of producing the Photoplastic material and articles that can be made from the Photoplastic material.

To provide an energy-polymerizable liquid which can be cured by a single reaction mechanism to form a photoplastic material, and to provide a method for manufacturing the photoplastic material and an article made of the photoplastic material.SOLUTION: Provided is a free radical polymerizable liquid for forming a three-dimensional object. The free radical polymerizable liquid comprises: a reactive oligomer, the reactive oligomer being at least one of (i) a multi-functional methacrylate oligomer, and (ii) a multi-functional acrylate oligomer; and a reactive monofunctional monomer, the reactive monofunctional monomer being at least one of (i) a monofunctional N-vinyl monomer, (ii) a monofunctional vinyl ether monomer, (iii) a monofunctional vinyl ester monomer, (iv) a monofunctional vinylamide monomer, (v) a styrene monomer, (vi) a monofunctional acrylamide monomer, (vii) a multi-functional (meth)acrylate monomer, (viii) a cyanoacrylate monomer, (ix) a monofunctional vinyl carbonate monomer, and (x) a monofunctional acryloyl monomer.SELECTED DRAWING: None

Method for constructing plastic components by layer-by-layer application of plastic powder and selective printing with a polymerizable liquid in a build space of a 3D printer, wherein the polymerization of the liquid is actively controlled and an initiator is used for the polymerization reaction, which is activated by heating, characterized in that the mixing ratio between plastic powder and polymerizable liquid is selected such that the air space in the powder is substantially filled.

The application discloses a device for forming a three-dimensional object, comprising: a forming platform, on which the three-dimensional object is formed; a construction surface, between which and the forming platform a printing area is defined, which is used to fill a polymerizable liquid; an optical module, which is used to irradiate the printing area to form a solid or semi-solid polymer from the polymerizable liquid; during the printing process, the forming platform is controlled to move so that the solid or semi-solid polymer is separated from the construction surface layer by layer; a detection assembly, which is used to acquire a change state during the separation of the solid or semi-solid polymer from the construction surface; and a controller, which is configured to be associated with the detection assembly and is used to control the movement of the forming platform according to the change state to form the three-dimensional object from the solid or semi-solid polymer. The application solves the technical problem that it is difficult to adapt to various printing conditions when separating the solid or semi-solid polymer from the construction surface with a fixed separation strategy.

A method for 3D printing a part in a layer-wise manner includes providing a pool of polymerizable liquid in a vessel over a build window and positioning a downward-facing build platform in the pool, thereby defining a build region above the build window. The method includes selectively curing a volume of polymerizable liquid in the build region by imparting electromagnetic radiation through the build window to form a printed layer of the part adhered to the build platform and scanning at least a portion of the build window with monochromatic, polarized light along a plane of incidence. The method includes measuring a change in intensity and polarity of the light to obtain information about the printed layer. The method includes raising the build platform to a height of a next layer to be printed and modifying the electromagnetic energy imparted into the next layer based upon the obtained information to print a next layer. The imparting, scanning, measuring, raising and modifying steps are repeated until the part is printed.

A kit for forming a laminate body including a light-to-heat conversion layer comprises a free radical polymerizable liquid adhesive containing at least one free radical polymerizable compound and at least one polyvalent metal compound for polymerizing the at least one free radical polymerizable compound, a light-to-heat conversion layer ink composition containing a thermally decomposable light absorbing agent and a binder or precursor thereof, and a curing accelerator containing a β-dicarbonyl compound or salt thereof. The laminate body can be rapidly cured at room temperature or by relatively gentle heating without requiring UV irradiation, and which allows long-term storage at room temperature and a long usable life.