Abstract: Disclosed are a supercritical in-mold foam forming device with a pretreatment function and a foaming method thereof. The supercritical in-mold foam forming device comprises a high-pressure reactor. A safety valve is disposed at the top of the high-pressure reactor and seals the top of the high-pressure reactor. A driving member used for driving is mounted in the middle of the top of the high-pressure reactor through bolts. An intra-mold temperature control module is disposed in a foaming mold, two groups of uniform heating plates are controlled be powered on synchronously to generate heat, and a temperature gradient is formed in a graphite backing plate by controlling the difference in proportion of output power.

Abstract: A vehicle inspection method, apparatus and device is disclosed. The method is applied to a vehicle inspection system including an oscilloscope, and the method includes: acquiring information about a to-be-measured vehicle; acquiring and displaying a measured item associated with information about the to-be-measured vehicle; receiving a user selection operation on the measured item to obtain a selected measured item; acquiring and displaying measurement guidance information corresponding to the selected measured item to prompt a user to connect the vehicle inspection system to the measured item according to the measurement guidance information; and measuring the selected measured item, and displaying a signal waveform corresponding to the measured item when a measurement start instruction of a user is received.

Abstract: A method of microcellular foam molding an article is provided with filling a mold with a polyolefin compound; forming crosslinks in the mold to obtain a crosslinked mold; dissolving a supercritical fluid into the crosslinked mold under a predetermined pressure and at a predetermined temperature for a predetermined period of time to obtain a second mold configured to allow the supercritical fluid to effuse through; and heating the second mold at a second predetermine temperature for a predetermined foaming time until a foamed article is finished in the second mold. A second embodiment involves using elastomers as foaming materials is also provided.

Abstract: The present disclosure relates to a method for physically foaming a polymer material and a foamed article. The method for physically foaming a polymer material comprises: (1) making a thermoplastic elastomer or a polyolefin material into a blank with an injector, an extruder, or a molding press; (2) subjecting the polyolefin blank to a crosslinking reaction to obtain a crosslinked polyolefin blank; (3) subjecting the thermoplastic elastomer blank or the crosslinked polyolefin blank to a high pressure impregnation with a supercritical fluid in an autoclave, then releasing the pressure to a normal pressure to obtain a supercritical fluid-impregnated blank; and (4) placing the supercritical fluid-impregnated blank into an end-product mold to perform an 1:1 in-mold foaming to obtain a finished foam article.

Abstract: The present disclosure relates to a polymer foam and a preparation method thereof. The polymer foam is obtained by physically foaming a thermoplastic elastomer or a polyolefin material, and has an apparent density of 0.30 g/cm3 or less and a rebound degree of 50% or more as measured according to ASTM D2632.

Abstract: A method of microcellular foam molding an article is provided with filling a mold with a polyolefin compound; forming crosslinks in the mold to obtain a crosslinked mold; dissolving a supercritical fluid into the crosslinked mold under a predetermined pressure and at a predetermined temperature for a predetermined period of time to obtain a second mold configured to allow the supercritical fluid to effuse through; and heating the second mold at a second predetermine temperature for a predetermined foaming time until a foamed article is finished in the second mold. A second embodiment involves using elastomers as foaming materials is also provided.

Abstract: The present disclosure relates to a non-corrugated foamed structure having an average resilience coefficient of greater than 45% as measured by the ASTM D-2632 method and an average pore size of 99 ?m or less.

Abstract: The present disclosure relates to a method for preparing a foamed structure, comprising: providing a preform prepared from one or more of thermoplastic materials, in which the preform has corresponding shape of the foamed structure; subjecting the preform to a first treatment with a first supercritical fluid at a first temperature and a first pressure; optionally, subjecting the preform treated with the first supercritical fluid to a second treatment with a second supercritical fluid at a second temperature and a second pressure; and foaming the resulting preform into a structure having predetermined shape and size.

Abstract: A method for manufacturing a master track link comprises machining a rough tooth profile using a milling process, and machining a finished tooth profile using a milling process.