摘要:
An electrorheological fluid comprising a dielectric particle as the dispersed phase, an insulating oil as the dispersing medium, and an additive, the additive being substantially insoluble in the dispersing medium, and being a composite containing a polysiloxane-containing structural unit (A), and at least one dispersed phase absorbing chain-containing structural unit (B) selected from the group consisting of an alkylene oxide chain-containing structural unit (B-1), a nitrogen atom chain-containing structural unit (B-2), and a long hydrocarbon chain-containing structural unit (B-3).
摘要:
An electrorheological fluid comprising dielectric particles and an insulating liquid and characterized by exhibiting a viscosity of not more than 0.2 Pa.cndot.s at a shear rate of 33/s when measured at 25.degree. C. in the absence of supply of an electric field and a structural viscosity satisfying the condition of the formula (1):0.01 Pa.cndot.s.ltoreq..eta..sub.1 -.eta..sub.2 .ltoreq.0.5 Pa.cndot.s (1)wherein .eta..sub.1 is a viscosity in at a shear rate of 3.3/s when measured at 25.degree. C. in the absence of supply of an electric field and .eta..sub.2 is a viscosity in at a shear rate of 33/s when measured at 25.degree. C. in the absence of supply of an electric field. This electrorheological fluid generates a large shear stress, exhibits an excellent current property and an excellent durability, and excels particularly in dispersion stability, redispersibility and fluidity.
摘要:
An electroreheological field comprising a dielectric particle as the dispersed phase, an insulating oil as the dispersing medium, and an additive, the additive being substantially insoluble in the dipersing medium, and being a composite containing a polysiloxane-containing structural unit (A), and at least one dispersed phase absorbing chain-containing structural unit (B) selected from the group consisting of an alkylene oxide chain-containing structural unit (B-1), a nitrogen atom chain-containing structural unit (B-2), and a long hydrocarbon chain-containing structural unit (B-3).
摘要:
An electrorheological fluid composition comprising a dispersion of disperse-phase particles formed of a sulfonated polymer possessing aromatic rings substituted with sulfonic acid groups in an electrically non-conducting oil which electrorheological fluid is characterized by the fact that the number of sulfonic acid groups in said sulfonated polymer forming said disperse-phase particles exceeds the number of aromatic rings present in said sulfonated polymer.
摘要:
For example, a blended composition is produced first by letting a monomer composition, mainly composed of alkyl (meth)acrylate and including a compound having a plurality of polymeric groups within a molecule, contain microscopic particles, such as carbon black, having an average primary particle size in a range between 1 nm and 200 nm, and then the blended composition is polymerized. Consequently, it has become possible to produce inexpensive crosslinked elastomer having excellent physical properties, such as small creep (low creep) in compression set, tensile elongation set, etc., and excellent mechanical strength, such as tensile break strength and tensile break elongation, in a simple procedure omitting the post-crosslinking step at a high-level productivity while saving energy and time spent in the kneading step.
摘要:
To provide an industrially useful α-olefin.((meth)acrylic acid)-based olefin copolymer having both a high molecular weight and a high comonomer content, a catalyst component capable of realizing a production of two different kinds of α-olefin.((meth)acrylic acid)-based olefin copolymers, and a production process using the catalyst. An α-olefin.((meth)acrylic acid)-based olefin copolymer is produced by using a metal complex complexed with a ligand represented by the following formula (Y is phosphorus or arsenic) for a catalyst composition.
摘要:
A Raman microscope and a Raman spectrometric measuring method achieve measurements with high wavenumber resolution. The Raman microscope includes a pump light source for emitting pump light as continuous light; a relaxation light source for emitting relaxation light to induce stimulated emission in a sample; a dichroic mirror for irradiating the relaxation light and the pump light to the sample; a spectrograph for spectrally separating Raman scattered light generated in the sample; and a detector for detecting the Raman scattered light spectrally separated in the spectrograph.
摘要:
A movable unit in an injection molding machine is started to operate and the current physical quantity and the current time (or current position of the movable unit) are detected. The current physical quantity is stored as a reference physical quantity in association with the elapsed time of operation of the movable unit (or position of the movable unit). A deviation of the current physical quantity from the reference physical quantity is calculated and stored, a distribution index value is then calculated from the physical quantity deviations in the first to n-th cycles, and a threshold value is determined from the distribution index value. When the deviation exceeds the threshold value, alarm processing is performed.
摘要:
Anxiety disorders, such as panic disorder, agoraphobia, obsessive-compulsive disorder, social phobia, post-traumatic stress disorder, generalized anxiety disorder, specific phobia, or the like, are treated by administering an effective amount of at least one adenosine A2A receptor antagonist to a patient in need thereof, optionally in combination with an anxiolytic(s) other than the adenosine A2A receptor antagonist.
摘要:
There is obtained an energy storage mechanism, for a switching device, that has a structure requiring no high-accuracy components and can perform release of driving-power transmission and re-engagement. In the case where the closing spring 22 is energized, the main gear 5 is rotated by the energy storage motor 3 or manually, via the output gear 16 and the intermediate gear 33; in the case where the closing spring 22 has been energized, the engagement between the intermediate gear 33 and the main gear 5 is released at a missing-tooth portion 34 of a gear B; in the case where the switching device is closed, the main gear 5 is rotated by restoration force exerted by the closing spring 22, and the intermediate gear 33 is separated from the main gear 5 due to the elongated hole 35 that supports the rotation axle 25 thereof; and in the case where the closing spring 22 is energized again, the intermediate gear 33 is again engaged with the main gear 5 due to the elongated hole 35 that supports the rotation axle 25 thereof.