摘要:
A roughened cured material allows reduction of surface roughness and increase in adhesive strength between a cured object and a metal layer. A roughened cured material is obtained by advancing curing of an epoxy resin material to obtain a preliminary-cured material and conducting roughening treatment on a surface of the preliminary-cured material. The epoxy resin material contains an epoxy resin, a curing agent, and a silica whose mean particle diameter is not smaller than 0.2 μm but not larger than 1.2 μm. When a roughening-treated surface of the roughened cured material is photographed with a scanning electron microscope, in a 5 μm×5 μm sized area of the roughening-treated surface in a photographed image, the number of particles of the silica that are exposed from the roughening-treated surface and whose exposed portions have a maximum length of 0.3 μM or longer in the image is not greater than 15.
摘要:
A thermoplastic foam is provided which contains a thermoplastic resin and a layered silicate and in which foam cells and the layered silicate are evenly and finely dispersed.A volume-expansible gas or heat decomposable blowing agent is incorporated into interlayer spaces of a layered silicate in a composite material containing 100 parts by weight of a thermoplastic resin and 0.1–50 parts by weight of the layered silicate, and the gas or blowing agent is allowed to expand in volume or thermally decompose to form foam cells 6, so that a thermoplastic foam is obtained in which the layered silicate has an average interlayer spacing of over 60 Å when determined by an X-ray diffractometry.
摘要:
A preliminary-cured material permits reduced surface roughness of a roughening-treated surface, and increase of an adhesive strength between a cured object and a metal layer. The preliminary-cured material is obtained by advancing curing of an epoxy resin material that contains an epoxy resin, a curing agent, and a silica. The preliminary-cured material includes a first principal surface to be roughening-treated, and a second principal surface. The silica includes a first small particle-diameter silica whose particle diameter is not smaller than 0.01 μm but smaller than 0.5 μm, and a second large particle-diameter silica whose particle diameter is not smaller than 0.5 μm but not larger than 20 μm. The first small particle-diameter silica is localized to exist in large quantity on a side of the first principal surface, and the second large particle-diameter silica is localized to exist in large quantity on a side of the second principal surface.
摘要:
A resin composition, substrate material, sheet, laminated board, resin-bearing copper foil, copper-clad laminate, TAB tape, printed circuit board, prepreg and adhesive sheet are provided which exhibit improved physical properties, dimensional stability, heat resistance and flame retardance, particularly high-temperature physical properties. A resin composition containing 100 parts by weight of a thermoplastic resin and 0.1-65 parts by weight of an inorganic compound, the resin composition having a mean linear expansion coefficient (α2) of 1.0×10−3 [° C.−1] or below over the temperature range from a temperature 10° C. higher than a glass transition temperature of the resin composition to a temperature 50° C. higher than the glass transition temperature of the resin composition.
摘要:
A thermoplastic foam is provided which contains a thermoplastic resin and a layered silicate and in which foam cells and the layered silicate are evenly and finely dispersed.A volume-expansible gas or heat decomposable blowing agent is incorporated into interlayer spaces of a layered silicate in a composite material containing 100 parts by weight of a thermoplastic resin and 0.1-50 parts by weight of the layered silicate, and the gas or blowing agent is allowed to expand in volume or thermally decompose to form foam cells 6, so that a thermoplastic foam is obtained in which the layered silicate has an average interlayer spacing of over 60 Å when determined by an X-ray diffractometry.
摘要:
The present inventors has its objects to provide a polymerization catalyst component, a copper compound which can easily be synthesized and is stable. The present invention is related to a method of producing a polymer which comprises using a copper compound represented by the general formula CuXn, LCuXn or L(L′)CnXn (wherein L and L′ each represents a ligand, X represents a halogen atom or an alkoxy, thioxy, allyloxy, amino, secondary amino, tertiary amino, cyano, nitro, alkyl or allyl group, and n represents an integer of 0 to 2) as a catalyst and/or polymerization initiator in polymerizing a vinyl monomer whose polarity value e, when expressed in terms of absolute value, is not more than 1.5.
摘要:
A system is provided for controlling storing databases in nonvolatile storages by a program. The database is composed as a set of records. In the system, a record storing reference table and data storing areas are provided. There is provided in the reference table, record identification data for identifying records and storage area designation data for designating a storage area in the nonvolatile storages. The data storing area is provided in one of the nonvolatile storages for each record. In the area, a storing logic record is stored. A storing control means is provided for newly storing a record in a storage area designated by the storage area designation data in the record storing reference table. A storing address information of the record in the storage area is stored in one of the data storing areas. A record stored in a storage area is read in based on the address information.
摘要:
A resin composition, substrate material, sheet, laminated board, resin-bearing copper foil, copper-clad laminate, TAB tape, printed circuit board, prepreg and adhesive sheet are provided which exhibit improved physical properties, dimensional stability, heat resistance and flame retardance, particularly high-temperature physical properties. A resin composition containing 100 parts by weight of a thermoplastic resin and 0.1-65 parts by weight of an inorganic compound, the resin composition having a mean linear expansion coefficient (α2) of 1.0×10−3 [° C.−1] or below over the temperature range from a temperature 10° C. higher than a glass transition temperature of the resin composition to a temperature 50° C. higher than the glass transition temperature of the resin composition.
摘要:
There is provided a sheet-form molding which is outstanding in fire retardation and prevention of flame spread, exhibiting good fire retardant and flame spread-preventive effects based on its good form retention during combustion, and also outstanding in mechanical strength and stability, particularly with a reduced incidence of necking and shrinkage, thus insuring high dimensional accuracy in use and precision in application. Particularly, there is provided a sheet-form molding comprising a single layer or a plurality of layers, which has at least one layer consisting essentially of formulating 0.1 to 100 weight parts of a lamellar silicate, and 0.1 to 70 weight parts of a metal hydroxide and/or 0.1 to 50 weight parts of a melamine derivative in each 100 weight parts of a thermoplastic resin.
摘要:
The invention provides an expandable polyolefin resin composition comprising (a) 40 to 100 wt. % of a polypropylene resin having a melt index of 0.5 to 12, (b) 0 to 60 wt. % of a polyethylene resin having a melt index of 2 to 50 (c) 0.5 to 10 parts by weight of the di(meth)acrylate of an aliphatic dihydric alcohol having a methylene group with 2 to 18 carbon atoms between the (meth)acryloyloxy groups at both ends per 100 parts by weight of the combination of the resins (a) and (b), and (d) 1 to 50 parts by weight of a thermally decomposable blowing agent. Preferably the composition further comprises (e) 0.5 to 5 parts by weight of a monofunctional monomer. When uniformly crosslinked, the composition affords an expandable polyolefin resin composition suited to production of a crosslinked polyolefin resin foam excellent in heat resistance, toughness and moldability of formability and appearing homogeneous.