A high temperature resistant polyimide film and its preparation method. The present invention relates to a polyimide film and its preparation method and solves the problems of honeycomb's and skin panel's core adhesive—polyimide film with insufficient heat resistance, no climbing of bonding core structure and adhesive fillet formation. The high temperature resistant polyimide film is made by polyimide solution, inorganic filler modifier and interface coupling agent by the steps of: under specific temperature and stirring conditions, adding inorganic filler modifier and interface coupling agent to polyimide solution, stirring to obtain the adhesive agent; filtering and degassing the adhesive agent, casting to a stainless steel drum with carrier cloth and release paper to obtain a self-supporting film; then heating and annealing to obtain the final polyimide film. The present invention is applied to high temperature resistant polyimide film and its preparation method.

There is provided a rubber composition for additive manufacturing that allows rubber shaped articles to be favorably produced using an additive manufacturing apparatus. The rubber composition for additive manufacturing of the present invention comprises a liquid rubber.

Motor vehicle components are subjected to continuous vibration during operation of the motor vehicle, and hydrolysis resistant (HR) glass fibres are included in polyamide compositions to improve the operational stability of the components.

Provided are a quality inspection method and a quality inspection system for unvulcanized rubber material. A final dielectric constant measurement device detects the dielectric constant of a final rubber material in which a compounding agent of predetermined type is mixed with unvulcanized rubber, and a calculator calculates a compounding ratio of the compounding agent to the final rubber material based on the detected dielectric constant, determines whether or not the calculated compounding ratio is in a preset compounding reference range, displays a determination result on a monitor, and adjusts a ratio of the compounding agent fed into an extruder to the unvulcanized rubber such that the calculated compounding ratio is within the compounding reference range.

Certain embodiments described herein are directed to articles that provide less sag. In some examples, the articles can include a fiber reinforced thermoplastic polymer core layer comprising reinforcing fibers and a thermoplastic polymer, and a frim disposed on the fiber reinforced polymer core layer. In certain examples, the frim comprises a film coupled to a scrim comprising an effective basis weight to prevent substantial sag of the article, e.g., during a forming operation.

Accurate 3D printing is achieved by depositing a support material containing a polyether and a particulate rheological additive onto a substrate from a fixed applicator, the substrate being moveable.

A tire sealant composition for use in tubeless tires is disclosed. The tire sealant composition primarily serves to seal the tire around the wheel rim and particularly in the tread area of the tire against punctures. The composition includes polymeric material, carrier fluid and particulate system. The tire sealant composition is flowable, non-toxic, non-corrosive and thermally stable.

Methods, apparatus, systems and articles of manufacture are disclosed to recycle 3D build material including a 3D printer having a build platform, a vibration generator to alternately apply a first vibration mode to the build platform to move build material on the build platform in a first direction, and to apply a second vibration mode to the build platform to move the build material in a second direction and an air handler to generate an airflow to remove the build material from the build platform.

A composite material for use as a deposition material in an additive manufacturing system comprises a polymer component, a filler component, and an extrudability component. The extrudability component is present in the composite material is an amount of from 0.05 wt % to 10 wt % based on the weight of the composite material, and can comprise polyhedral oligomeric silsesquioxane (POSS). The polymer component comprises a high temperature polymer such as an engineering polymer or a high performance polymer. The filler component comprises at least one of a conductive component and a strengthening component. In some cases, the conductive component is present in an amount such that the composite material is formed as one of an electrostatic discharge (ESD) material and an EMI/EMC shielding material. The composite material can be deposited in a liquid state on a substrate using an additive manufacturing system, to produce a three-dimensional object.

The present invention relates to an artificial marble including one or more stripe regions and a base region on a first surface of the artificial marble, in which the stripe regions extend into the artificial marble, in which the artificial marble includes a section where a surface of the section corresponding to the first surface of the artificial marble is the base region and an inside of the artificial marble in a vertical direction under the base region is the stripe region, and in which at least a part of the stripe region of the section is visible to a naked eye from the surface of the base region.