摘要:
A prepreg tape is firstly prepared by bonding prepreg layer to a backing paper and then the prepreg tape is cut to a depth enough to cut the prepreg tape but not the backing paper. A unnecessary portion of the prepreg tape is removed from the backing paper to obtain a cut prepreg tape. A laminating attachment is moved in a predetermined direction while urging the prepreg tape against the surface of an operating table. The cut prepreg tape is peeled off from the backing paper and the peeled off prepreg tape is bonded to the operating table. The cut prepreg tapes are successively oriented in a predetermined direction and juxtaposed to form a laminated sheet. When the sheet is mounted on a mold of a predetermined shape. When the impregnated thermosetting resin is perfectly cured under heat and pressure a product useful for assembling various vehicles can be obtained.
摘要:
A prepreg tape is firstly prepared by bonding prepreg layer to a backing paper and then the prepreg tape is cut to a depth enough to cut the prepreg tape but not the backing paper. An unnecessary portion of the prepreg tape is removed from the backing paper to obtain a cut prepreg tape. A laminating attachment is moved in a predetermined direction while urging the prepreg tape against the surface of an operating table. The cut prepreg tape is peeled off from the backing paper and the peeled off prepreg tape is bonded to the operating table. The cut prepreg tapes are successively oriented in a predetermined direction and juxtaposed to form a laminated sheet. The sheet is that mounted on a mold of a predetermined shape. When the impregnated thermosetting resin is perfectly cured under heat and pressure, a product useful for assembling various vehicles can be obtained.
摘要:
When cutting a groove of a predetermined contour through a plate shaped workpiece with a fret saw blade, various program data regarding the direction of movements of the fret saw blade and the contour of the groove to be cut are stored in a memory device. The fret saw blade is moved in a direction instructed by the memory device and the orientation of the saw blade is controlled at the starting point of each segment of the groove.
摘要:
An object of the present invention is to provide a polysiloxane compound that can be developed in an aqueous alkali solution and can yield a cured product or thin film having superior heat-resistant transparency and insulating properties, a curable composition thereof, and a thin film transistor provided with a passivation layer or gate insulator using the same, and the present invention relates to a polysiloxane compound having at least one photopolymerizable functional group in a molecule thereof, and having at least one member selected from the group consisting of an isocyanuric acid backbone structure, a phenolic hydroxyl group and a carboxyl group within the same molecule, to a curable composition containing the polysiloxane compound, and to a cured product thereof.
摘要:
The present invention provides a polysiloxane composition maintaining high transparency over a wide wavelength region and a wide temperature region and being excellent in heat resistance, low-dielectric characteristics, workability, and the like. A polysiloxane composition includes (A) a polysiloxane which is composed of a polysiloxane compound having a polyhedral skeleton having 6 to 24 Si atoms in its molecule and which has at least one alkenyl group bonded directly or indirectly to a Si atom constituting the polyhedral skeleton, (B) a polysiloxane having a hydrosilyl group, and (C) a hydrosilylation catalyst.
摘要:
A polysiloxane composition having high transparency, while being excellent in heat resistance and light resistance is provided.A polysiloxane composition is composed of (A) a polysiloxane which is a polysiloxane compound having a polyhedral skeleton having 6 to 24 silicon atoms in its molecule and which has at least one group containing a hydrolyzable silyl group bonded to a Si atom constituting the polyhedral skeleton, and (B) a photoacid generator. The hydrolyzable silyl group is preferably an alkoxysilyl group.
摘要:
In a machine for cutting grooves of a given pattern through a blank with a fret saw blade, openings for receiving the fret saw blade at the cutting starting points of the grooves are determined such that the center of each opening is positioned at a point spaced from a cutting start point by a distance equal to one half of the width of the fret saw blade in a direction opposite to the direction of cutting the groove.
摘要:
The present invention aims to provide a polysiloxane composition which exhibits high heat and light resistance, and excellent gas-barrier properties. The polysiloxane composition of the present invention includes: (A) a modified polyhedral polysiloxane which is obtained by modifying (a) an alkenyl group-containing polyhedral polysiloxane compound with (b) a hydrosilyl group-containing compound; and (B) an organopolysiloxane containing at least two alkenyl groups in a molecule, wherein the polysiloxane composition after curing has a water vapor permeability of not more than 30 g/m2/24 h, and the polysiloxane composition includes (B1) an aryl group-containing organopolysiloxane as the organopolysiloxane (B), and/or (C) a component which is (C1) an organosilicon compound that contains one alkenyl or hydrosilyl group in a molecule, or (C2) a cyclic olefin compound that contains one carbon-carbon double bond in a molecule.
摘要:
The present invention provides a polysiloxane composition maintaining high transparency over a wide wavelength region and a wide temperature region and being excellent in heat resistance, low-dielectric characteristics, workability, and the like.A polysiloxane composition includes (A) a polysiloxane which is composed of a polysiloxane compound having a polyhedral skeleton having 6 to 24 Si atoms in its molecule and which has at least one alkenyl group bonded directly or indirectly to a Si atom constituting the polyhedral skeleton, (B) a polysiloxane having a hydrosilyl group, and (C) a hydrosilylation catalyst.
摘要:
According to the present invention, a flame retardant can be obtained, which provides a thermoplastic resin composition excellent in flame retardancy and impact resistance, and by compounding this flame retardant in thermoplastic resin, a flame retardant resin composition excellent in flame retardancy and impact resistance can be obtained. The present invention relates to a graft copolymer containing polyorganosiloxane obtained by polymerizing 0 to 10 parts by weight of a vinyl monomer (B) comprising 100 to 20% by weight of a multi-functional monomer containing at least two polymerizable unsaturated bonds in a molecule (b-1) and 0 to 80% by weight of another copolymerizable monomer (b-2) and 5 to 70 parts by weight of a vinyl monomer (C), in the presence of 30 to 95 parts by weight of polyorganosiloxane in a latex state (A), so that the total amount of polyorganosiloxane (A), vinyl monomer (B) and vinyl monomer (C) becomes 100 parts by weight. Also, according to the present invention, in a process for preparing an emulsion of polyorganosiloxane, polymerization conversion ratio can be improved. The present invention relates to a process for preparing an emulsion of polyorganosiloxane, which comprises obtaining polyorganosiloxane (H) by emulsion polymerizing cyclic organosiloxane under acidic conditions of pH of at most 5 and adding condensation reactive organosilane represented by formula (I): R1nSi(OR2)(4-n) (1) (wherein R1 represents an organic group, R2 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, n represents an integer of 0 to 3) or a partially hydrolyzed condensate thereof (I).