摘要:
The present invention provides an aromatic polyester which is obtained by condensation polymerization reaction of terephthalic acid, 2,6-naphthalenedicarboxylic acid and acylated product obtained by acylation of parahydroxybenzoic acid and hydroquinone with fatty acid anhydride, wherein said aromatic polyester satisfy the following conditions (A) to (D), and the acylation and/or the condensation polymerization reaction are conducted in the presence of heterocyclic organic compound containing at least two nitrogen atoms: (A): Number of moles of a monomer unit derived from parahydroxybenzoic acid (UNIT (1)) is 54-62 moles per 100 moles of UNIT (1), a monomer unit derived from hydroquinone (UNIT (2)), a monomer unit derived from terephthalic acid (UNIT (3)) and a monomer unit derived from 2,6-naphthalenedicarboxylic acid (UNIT (4)) in total; (B): Number of moles of UNIT (2) is 19-23 moles per 100 moles of UNIT (1), UNIT (2), UNIT (3) and UNIT (4) in total; (C): The molar ratio of UNIT (3) and UNIT (4), which is represented by the following formula (I) is 0.23-0.35: [(3)]/{[(3)]+[(4)]} (I) wherein [(3)] and [(4)] represent number of moles of respective UNIT (3) and UNIT (4); (D): Total number of moles of UNIT (3) and UNIT (4) is 0.95-1.05 moles per one mole of UNIT (2).
摘要:
A Ni-based single crystal super alloy capable of improving strength by preventing precipitation of a TCP phase at high temperatures may be obtained by a Ni-based single crystal super alloy having a composition consisting of 5.0-7.0 wt % Al, 4.0-8.0 wt % Ta, 2.9-4.5 wt % Mo, 4.0-8.0 wt % W, 3.0-6.0 wt % Re, 0.01-0.50 wt % Hf, 2.0-5.0 wt % Cr, 0.1-15.0 wt % Co and 1.0-4.0 wt % Ru in terms of its weight ratio, with the remainder consisting of Ni and unavoidable impurities. Preferably, the composition of Co in the Ni-based single crystal super alloy is limited to 0.1-9.5 wt %.
摘要:
Real-time optimization is conducted for a control device having a fuzzy inference system that can optimize characteristics of the control device in real time, by coding parameters used in the fuzzy inference system into chromosomes, and optimizing in real time the output of the control device by subjecting the chromosomes to evolutionary computation. Coding is conducted by (i) revising a matrix of fuzzy rules used in the system by extracting a section from the matrix and coding elements of the section into chromosomes; (ii) modifying the configuration of the fuzzy rule matrix defined by membership functions by coding elements of the membership functions into chromosomes; or (iii) changing a level of an input of the parameters and a level of an output of the fuzzy inference system.
摘要:
A process for producing a thermotropic liquid crystalline polymer having a flow beginning temperature of 340° C. or more comprising raising the temperature of a thermotropic liquid crystalline polymer from 200° C. or less to raising end temperature (A° C.) of (FT0+50)° C. or more in substantially solid phase condition, wherein the thermotropic liquid crystalline polymer has a flow beginning temperature (FT0) of 200° C. or more and 300° C. or less, and in a step of raising the resin temperature (t) from (FT0+20)° C. to (FT0+50)° C. (step (1)), the average raising speed of the resin temperature is from over 0.1° C./min. to less than 0.5° C./min. and the flow beginning temperature of the thermotropic liquid crystalline polymer at each resin temperature is (t−10)° C. or more and (t+40)° C. or less.
摘要:
An oxide magnetic material comprising main constituents including Fe2O3, ZnO, CuO and NiO. Y2O3 of 0.003 to 0.021 wt % and ZrO2 of 0.06 to 0.37 wt % are included in said main constituents with respect to all amounts. It is also preferable that Si of 0.010 to 0.0112 wt % is included in said main constituents with respect to all amounts. Further, it is also preferable that Y2O3 of 0.001 to 0.011 wt %, ZrO2 of 0.031 to 0.194 wt %, and Si of 0.010 to 0.056 wt % are included in said main constituents with respect to all amounts.
摘要翻译:一种氧化物磁性材料,其主要成分包括Fe2O3,ZnO,CuO和NiO。 0.003〜0.021重量%的Y 2 O 3和0.06〜0.37重量%的ZrO 2相对于所有量包括在所述主要成分中。 相对于所有量,也优选所述主要成分中包含0.010〜0.0112重量%的Si。 此外,相对于所有量,还优选在所述主要成分中包含0.001至0.011重量%的Y 2 O 3,0.031至0.194重量%的ZrO 2和0.010至0.056重量%的Si。
摘要:
A method for manufacturing a prepreg in which a reinforcing substrate is impregnated with a thermosetting matrix resin. In the method, the reinforcing substrate is moved in a traveling direction. The thermosetting matrix resin is supplied to an outer circumferential surface of a transferring roller. The thermosetting matrix resin which substantially contains no solvent and which is in. a molten state is transferred from the outer circumferential surface of the transferring roller to a first surface of a reinforcing substrate while the reinforcing substrate moves. The thermosetting matrix resin which is transferred to the first surface is forced to permeate through the reinforcing substrate by pressing at least one pressing roller on the thermosetting matrix resin transferred to the first surface while the reinforcing substrate moves. The reinforcing substrate impregnated with the thermosetting matrix resin is heated to semi-cure the thermosetting matrix resin.
摘要:
The present invention provides a solid preparation comprising a crystal of [3-[(2R)-[[(2R)-(3-chlorophenyl)-2-hydroxyethyl]amino]propyl]-1H-indol-7-yloxy]acetic acid (Compound A), especially a crystal of Compound A having a particle size of not larger than 100 &mgr;m at the cumulative weight distribution value of 50%, and not larger than 200 &mgr;m at the cumulative weight distribution value of 95%, preferably a solid preparation having the excellent stability and the content uniformity of Compound A, which is prepared by preparing granules of the crystal of Compound A with fillers, disintegrants and binders, and then followed by mixing said granules with external excipients.
摘要:
The present invention provides a continuous casting method in which vibration is given to molten metal by a shifting magnetic field so that the equi-axed crystal ratio can be enhanced and the equi-axed crystals can be made fine without generating surface defects caused by powder trapping. Further, the present invention provides an apparatus to which the continuous casting method is applied. Furthermore the present invention provides a cast slab produced by the above method and apparatus. The method of casting molten metal comprises the following steps: pouring molten metal into a mold and solidifying it in the mold while applying an electromagnetic force, which is generated by an electromagnetic coil arranged in the proximity of a molten metal pool in the mold, upon the molten metal; and vibrating the molten metal, which has been solidified in the mold while being cooled and solidified, by a shifting magnetic field generated by the electromagnetic coil so that the molten metal is accelerated by a high intensity and a low intensity of acceleration in a range not exceeding a predetermined flow velocity when the directional vectors of high acceleration and low acceleration in the same direction or in the opposite direction are combined with each other.
摘要:
A vegetable fiber cement moulded body of the present invention includes a nitrate as an additive agent. A method of manufacturing the same includes the steps of mixing raw materials including at least a vegetable fiber material, cement and water, moulding the mixed material, and curing this molded body, wherein a nitrate is added at the time of the aforementioned raw material mixing step or the aforementioned molding step. The molded body is preferably heated at the time of the curing step. According to the present invention, a vegetable fiber cement molded body of high strength which is not easily affected by substances that inhibit cement hardening and a method of manufacturing the same efficiently and at low cost are provided.
摘要:
A tool for tightening and melt-adhering a strap, which is light in weight, can be operated by one hand, performs a series of operations, i.e., tightening, pressurizing and frictionally melt-adhering the strap by utilizing power (fluid pressure) instead of manual operation, and which enables the time for frictional melt-adhesion to be adjusted over a wide range and highly precisely with ease, enabling the worker to continue the operation maintaining high efficiency with less fatigue. The tool for tightening and melt-adhering the strap comprises a means for pressing a tightening roller which includes a reversible motor, a means for pressing a vibrator for friction, and a timing mechanism capable of adjusting the time for driving the vibrator over a wide range and finely, which are compactly arranged as a unitary structure.