摘要:
Thermosetting resin compositions are obtained by mixing a resinous addition product produced by reacting an isocyanate compound having a molecular weight of 100 to 2000 and containing at least two isocyanate groups in its molecule with an epoxyphenol compound represented by the formula, ##EQU1## wherein R is a bi- or more valent group containing phenyl, R.sub.1 is hydrogen, methyl or ethyl, m and n each are an integer of 1-8, and optionally an ordinary thermosetting epoxy resin, and 0.01 to 10 % by weight of a basic heterocycle forming catalyst based on the weight of said resinous addition product, said isocyanate compound and said epoxyphenol compound being blended so that said OH group may be present in an amount of 1/3 to 1 equivalent per equivalent of said isocyanate group and said epoxy group may be present in an amount of one-fifth to two-thirds equivalent per equivalent of said isocyanate group. The said addition product can be converted into a stable B-stage and is particularly useful as a varnish for prepreg.
摘要:
A thermosetting resin composition comprising a polyfunctional epoxy compound such as diglycidyl ether of bisphenol A, a polyfunctional isocyanate such as diphenylmethane diisocyanate, a curing agent and polybutadiene type polymer having terminal hydroxyl groups can produce cured articles excellent in heat resistance and crack resistance.
摘要:
Electric machine windings produced by wrapping a composite insulating material around an electrical conductor, said composite insulating material having been prepared by bonding two or more insulating materials with a silicone resin containing hydroxyl groups in the molecular structure, impregnating said composite insulating material with an insulating varnish comprising 1 equivalent of a polyfunctional epoxy compound and 2.5 to 25 equivalents of a polyfunctional isocyanate compound and curing said varnish, have excellent insulation properties under high temperatures and high humidity and thermal resistance of class H or more.
摘要:
Electric windings comprising an electric conductor and a plurality of cured insulating layers wrapping around the conductor, said cured insulating layers being obtained by bonding two or more insulating materials with a binder solution containing a mixture of a condensation polymerization type silicone resin containing hydroxyl groups in the molecule and an addition polymerization type silicone resin to form a composite insulating material, wrapping the composite insulating material around the conductor, impregnating the wrapped composite insulating material with an impregnating varnish of an epoxy-isocyanate resin and curing the impregnated composite insulating material, have excellent water resistance in addition to excellent thermal resistance, and mechanical properties.
摘要:
In an epoxy resin composition comprising an alicyclic epoxy resin, a curing agent having phenolic hydroxyl group in its molecule and an imidazole curing accelerator, excellent thermal resistance and excellent mechanical properties can be given to the cured epoxy resin composition by blending 100 parts by weight of 2-(3,4-epoxy)cyclohexyl-5,5-spiro(3,4-epoxy)cyclohexane-m-dioxane as the alicyclic epoxy resin, 25 to 50 parts by weight of a phenol-formaldehyde condensate as the curing agent having phenolic hydroxyl group in its molecule and 0.1 to 15 parts by weight of at least one imidazole compound selected from the group consisting of 2-phenylimidazole, 2-undecylimidazole, 2-heptadecylimidazole, 2-phenyl-4-methylimidazole, 1-cyanoethyl-2-methylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-methyl-4-ethylimidazole, 1-cyanoethyl-2-undecylimidazole, 1-cyanoethyl-2-phenylimidazole, 1-azine-2-methylimidazole, 1-azine-2-undecylimidazole and 1-azine-2-ethyl-4-methylimidazole as the imidazole curing accelerator.
摘要:
A thermosetting resin composition comprising a polyfunctional epoxy compound such as diglycidyl ether of bisphenol A, a polyfunctional isocyanate such as diphenylmethane diisocyanate, a curing agent and a polybutadiene type homopolymer having terminal hydroxyl groups or copolymer having terminal amino groups, or a reaction product of a polyfunctional epoxy compound or an epoxy compound having halogen atom(s) and a polybutadiene type homopolymer or copolymer having terminal hydroxyl groups or terminal carboxyl groups can produce cured articles excellent in heat resistance, crack resistance and fire resistance.
摘要:
The address of an image processing apparatus is set as the network address of an external network of an information processing apparatus, a network address different from the address of the image processing apparatus is set as the network address of a local network, and an address different from these network addresses is distributed to another information processing apparatus.
摘要:
A wire harness lead-out structure includes a body that includes a containing portion for receiving a wire harness and a corrugated tube covering the wire harness, a lid that is attached to the body to close an upper opening of the body, two completely-fixing ribs that are formed on the body and the lid respectively to be engaged in grooves of the corrugated tube to prevent a movement of the corrugated tube in an axial direction of the corrugated tube, and a provisionally-fixing rib that is formed in a single line on the opposed side walls of the body to be engaged in a single groove of the corrugated tube, and is disposed between the two completely-fixing ribs. The wire harness lead-out structure length required for provisionally fixing a corrugated tube can be reduced and a compact design can be achieved.
摘要:
The present invention aims at detecting torque with a high degree of precision, by suppressing influences such as disturbance and rotation dependency. An output side cylinder is provided with a reference slit, and an input side cylinder is provided with a first detection slit and a second detection slit, which overlap the reference slit, the overlap amount between the first detection slit and the reference slit changing inversely with the overlap amount between the second detection slit and the reference slit, magnetic flux is applied from the inner side of the input side cylinder by a first drive coil and a second drive coil, a measuring circuit detects a phase difference between a phase of a detection signal for detecting the magnetic flux by a first detection coil provided on a position facing to the first detection slit on the outer side of the output side cylinder, and a phase of a detection signal for detecting the magnetic flux by a second detection coil provided on a position facing to the second detection slit on the outer side of the output side cylinder, and based on the phase difference, a torsion amount of the torsion bar is calculated. The directions of the magnetic flux generated by the first drive coil and second drive coil are opposite to each other.
摘要:
In an image formation apparatus which includes a nonvolatile memory, the apparatus has a first mode of controlling so that a job does not remain in the nonvolatile memory after image formation is performed based on the job and a second mode of storing the job in the nonvolatile memory and not physically deleting the job in the nonvolatile memory after the image formation is performed based on the job, it is registered whether the image formation is performed in the first mode or the second mode with respect to each user authenticated by the apparatus, and it is selectively controlled to perform the image formation in either one of the first mode and the second mode based on the user authentication.