Embodiments of an invention disclosed herein relate to devices, processes, and systems for processing one or more polymers.

Embodiments of an invention disclosed herein relate to devices, processes, and systems for processing one or more polymers.

An example system is used to mix components and dispense a mixture for forming a thiol-ene polymer article. The system includes a first reservoir containing a first component of the thiol-ene polymer including a first polymerizable compound, and a second reservoir containing a second component of the thiol-ene polymer including a second polymerizable compound. The system also includes a mixing vessel having a mixing chamber, a delivery manifold providing a conduit for fluid from the first and second reservoirs to the mixing vessel, and a dispensing manifold providing a conduit for fluid from the mixing vessel. The system also includes a control module programmed to control the operation of the system.

A formulation for a photopolymer composite material for a 3D printing system includes an acrylate oligomer, an inorganic hydrate, a reinforcing filler, and an ultraviolet (UV) initiator. In the formulation the acrylate oligomer may be found in the range between about 20.0-60.0 w % of the formulation. The inorganic hydrate may be found in the range between about 20.0-50.0 w % of the formulation. The reinforcing filler may be found in the range between about 5.0-60.0 w % of the formulation, and the UV initiator may be found in the range between about 0.001-0.5 w % of the formulation. A method of generating a formulation of a photopolymer composite material for use in a 3D printing system includes using an acrylate oligomer, an inorganic hydrate, a reinforcing filler, and an ultraviolet (UV) initiator.

The invention is directed to an apparatus for making a finished rubber mixture which includes a reactive additive. The apparatus includes a tandem mixer with an upper machine having an upper mixing chamber and a lower machine having a lower mixing chamber. The lower mixing chamber is larger than the upper mixing chamber and there are rotors disposed in each mixing chamber. Mixture components are introduced into the lower mixing chamber via a loading shaft of a loading unit. The loading unit has at least two metering devices, a cutting or preheating unit connected upstream of a metering device and a first conveyor belt to the loading shaft. All conveyor belts of the apparatus can be switched on and off automatically, such that mixture components weighed in can be held in a “wait position” thereon.

A method is disclosed for preparing and dispensing a mixture obtained by mixing at least one first chemically reactive component and at least one second chemically reactive component containing a dispersed solid material i.e. a filler, by a high pressure mixing device comprising a head provided with injectors and one or more interception and supply devices defined by respective nozzles for narrowing the passage of the flows and with correlated plug members that are movable axially and settable for controlling said narrowing. The injectors and the interception and supply device transform the pressure energy of the fluids into kinematic energy of the jets that clash in the mixing chamber to mix the components for turbulence induced by the jets, in which a valve member is slidable, in particular a slide-valve, provided with longitudinal slots for recirculating the components to respective storage tanks. The method provides: removing from at least one tank, by pumping arrangement connected to a respective hydraulic delivery line to the head, a dosed quantity of the at least second chemically reactive second component to with filler material is added; preventing, once said quantity is removed, that the second component flows back from the pumping arrangement to the tank; dosing the component with a controlled flowrate B to the delivery line to the mixing head; keeping the slide-valve closed in a recirculating position and preventing the entry of the at least second component to the head and to the respective recirculating slot and pressurizing, by a dosed quantity Vot, the delivery line to subject the at least second polymeric component to a pressure increase along the delivery line until a value is reached that is near that reached by the passage through the nozzle of the respective interception and supply device; subsequently enabling the entry of the second component into the head to make the second component recirculate to the slots of the slide-valve for a period of time that is comparatively very reduced until it is reduced virtually to zero with respect to a recirculating step of the at least first component through the slide-valve, and subsequently opening by retracting the slide-valve to permit mixing by high pressure collision of the first and at least one second components to dispense the resulting mixture through the mixing chamber and the dispensing conduit for pouring the mixture into a cavity or into a shape to make an object by reaction of the aforesaid first and second chemically reactive components. An apparatus for preparing and dispensing the mixture is also disclosed.

An ultralow-gloss polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) resin composition and a preparation method thereof are provided. The composition includes the following components: 40-80 parts by weight of bisphenol A polycarbonate, 19-40 parts by weight of acrylonitrile-butadiene-styrene graft copolymer, 1-20 parts by weight of ultralow-gloss toughening modifier, and 0.1-5 parts of processing aid. The ultralow-gloss toughening modifier includes the following components: post-treated polymeric microspheres, a low-temperature toughening agent, a coupling agent, and aid. The preparation method of the composition includes: fully mixing all components in a high-speed mixer to obtain a mixture; feeding the mixture into a main feed port from a twin-screw extruder, melting, extruding, cooling, drying, and pelletizing. The PC/ABS resin composition prepared by the present invention has extremely low gloss level and excellent impact toughness, and it can be applied in scenarios requiring low temperature resistance and low gloss level.

A method of producing an adhesive resin includes: a heating and kneading step of kneading a mixture containing a ring structure-containing hydrocarbon resin, an adhesive functional group-containing compound, and a peroxide while heating the mixture to obtain a heated and kneaded product; and a cooling and kneading step, performed in succession to the heating and kneading step, of kneading the heated and kneaded product while cooling the heated and kneaded product to obtain a cooled and kneaded product. The adhesive resin has a yellowness index (Yi) of 3.0 or less when 0.8 parts by mass of 2-(5-chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol is added to 100 parts by mass of the adhesive resin.

The present invention relates to a production system for manufacturing of formulations, comprising a unit (1). The unit (1) includes a subunit (1.1) which includes a combination of a process mixer and a buffer tank, means of feeding defined amounts of feedstocks into the process mixer, a measurement unit for ascertaining properties of a part-batch of a formulation manufactured in the process mixer, an evaluation unit for determining a deviation of properties of the part-batches manufactured in the process mixer from the properties of a predefined target state, and a unit for adjusting the feed of feedstocks in view of the deviations. The present invention also relates to a process for manufacturing formulations.

A method, apparatus, and system for mixing a compounded material. A first selected amount of a base part for the compounded material and a second selected amount of an activator part for the compounded material to form a total amount of the compounded material is determined. The first selected amount of the base part is pumped by a pump system from a set of base part sources connected to the pump system into a container. The second selected amount of the activator part is pumped by the pump system from a set of activator part sources connected to the pump system into a container. The base part and the activator part in the container are mixed by a mixing system for a predetermined amount of time that is sufficient to activate the compounded material for use.