摘要:
A thermally curable adhesive composition that includes a fluxing agent that also acts as an adhesive is provided. The composition includes: (a) a fluxing agent represented by the formula RCOOH, wherein R comprises a moiety having two or more carbon-carbon double bonds wherein in one embodiment, at least one is within an acrylate or methacrylate group, and which may further contain at least one aromatic moiety; (b) a carboxylic acid neutralizing agent; (c) optionally, an effective amount of a cross-linkable diluent; (d) optionally, an effective amount of a source of free radical initiators; and (e) optionally, an effective amount of a resin. By employing an acrylate, methacrylate, or phenol in the structure of the adhesive flux, the cure temperature and moisture absorption characteristics can be significantly improved. The composition can be applied directly onto the surface(s) of devices that are to be joined electrically and mechanically. These devices include, printed circuit substrates, connectors, components, cables, and otherelectrical devices having metallization patterns to be soldered together by means of a solder-bumped pattern on one or both surfaces. Alternatively, a solder paste, comprising solder powder mixed with the fluxing agent of the present invention can be used. During the reflow step, the fluxing agent promotes wetting of the solder to the metallization patterns and, simulatneously, the fluxing agent itself cross-links to mechanically bond and encapsulate the surfaces and their metallizations. The compositions can also be used to formulate sinterable conductive ink.
摘要:
Es wird ein Seidenwalkstoff (Seidenfilz) beschrieben, der eine Zwischenlage (1) aus Naturhaar und Decklagen (2) aus Seidenwatte aufweist. Ferner wird ein Verfahren zur Herstellung dieses Seidenwalkstoffs beschrieben, bei dem eine Zwischenlage aus Naturhaar mit zwei Decklagen aus Seidenwatte zusammengewalkt werden. Der erfindungsgemässe textile Werkstoff zeichnet sich durch eine hohe Wärme- und Feuchtigkeitsregulierung sowie durch ein niedriges Gewicht aus.
摘要:
The present invention is a method for performing a calibration routine of a deposition device in a three-dimensional modeling machine that deposits a material to build up three-dimensional objects as directed by a controller on a substrate mounted on a platform. The method comprises generating a material build profile, which represents a three-dimensional structure at defined locations. A relative position of the material build profile is then determined. An expected build profile is identified and then compared to the determined relative position of the material build profile to identify any difference which represents an offset. The modeling system then positions the deposition device based upon the offset.
摘要:
A two section composite product is produced, wherein each section comprises a core formed from a mixture of cellulosic material and a thermoplastic material, and at least one face layer attached to each core. A method and facing apparatus (400) for making the composite product are also disclosed.
摘要:
The invention relates to a thermally fusible interlining nonwoven comprising a fusing layer (A) composed of at least one staple fibre web including at least 50% by weight (based on the layer (A)) of intermelted and/or non-intermelted thermoplastic staple fibres whose melting and/or softening temperature is in the range between 60 and 165°C, and also a layer (B) composed of at least one staple fibre web or nonwoven including from 80% by weight to 100% by weight (based on the layer (B)) of staple fibres having a softening and melting temperature or, if not applicable, a decomposition temperature above 170°C, wherein the layers (A) and (B) are bonded together. The invention further relates to a process for producing an interlining nonwoven of the invention and also to preferred uses of this interlining nonwoven.
摘要:
A plurality of particles (12) include a first material. A coating (14) including a second material is formed on surfaces of the particles, until a selected ratio of the volume of the coating relative to the volume of the particles is achieved. A plurality of particles, including the coated particles (10), are consolidated in a manner such that the particles are caused to be joined to each other, to form an article. The ratio of the volume of the coating relative to the volume of the particles is selected in a manner such that the article is engineered to have a selected volume fraction presenting the volume of the second material in the article relative to the volume of the first material in the article. The first material, the second material, and the volume fraction are selected in a manner such that the article is engineered to exhibit a selected intrinsic property.
摘要:
Es wird ein Seidenwalkstoff (Seidenfilz) beschrieben, der eine Zwischenlage (1) aus Naturhaar und Decklagen (2) aus Seidenwatte aufweist. Ferner wird ein Verfahren zur Herstellung dieses Seidenwalkstoffs beschrieben, bei dem eine Zwischenlage aus Naturhaar mit zwei Decklagen aus Seidenwatte zusammengewalkt werden. Der erfindungsgemässe textile Werkstoff zeichnet sich durch eine hohe Wärme- und Feuchtigkeitsregulierung sowie durch ein niedriges Gewicht aus.