摘要:
A hydrous silica gel is dehydrated by freezing, thawing, and removing water separated by thawing, thereby yielding silica particles. In addition, the silica particles thus formed is washed and fired, thereby producing a synthetic quartz glass power.A water glass is dealkalized, an oxidizing agent and an acid are added, the mixture thus formed is passed through a hydrogen type cation exchange resin, the aqueous silica solution thus formed is then gelled, and the gelled material is then washed and fired, thereby producing a synthetic quartz powder.Silica is sequentially held for a predetermined time at each temperature range of 150 to 400° C., 500 to 700° C., and 1,100 to 1,300° C., thereby producing a quartz glass.
摘要:
The present invention provides: a positive photosensitive composition that yields an insulation layer superior not only in high transparency, but also in heat resistance enduring a temperature during the production of a substrate, solvent resistance, and anti-aging property as a permanent resist; a positive permanent resist utilizing the positive photosensitive composition; and a method for producing the positive permanent resist. The present invention provides: a positive photosensitive composition containing (A) a curable silicone resin having a silanol group, which resin has a structure obtained by a reaction between one or more cyclic siloxane compounds represented by the following general formula (1): and one or more arylalkoxysilane compounds represented by the following general formula (2): (B) diazonaphthoquinones, and (C) a solvent; a positive permanent resist using the positive photosensitive composition; and a method for producing the positive permanent resist.
摘要:
A silicon-containing curable composition, comprising: a prepolymer (A) containing two or more Si—H groups per molecule obtained by hydrosilylation reaction of one kind or more selected from each of components (α) and components (β) described below; a cyclic siloxane compound (B) containing per molecule two or more carbon-carbon double bonds that have reactivity to the Si—H groups; and a hydrosilylation catalyst (C); wherein the component (α) is a cyclic siloxane compound represented by formula (1) and contains two or more Si—H groups per molecule, wherein R1, R2 and R3 each are an alkyl group having 1 to 6 carbon atoms or a phenyl group, may be the same or different, a is any number of 2 to 10, b is any number of 0 to 8, and a+b≧2, and wherein the component (β) is a compound containing per molecule two or more carbon-carbon double bonds that have reactivity to the Si—H groups.
摘要:
A silicon-containing curable composition, comprising: a prepolymer (A) containing two or more Si—H groups per molecule obtained by hydrosilylation reaction of one kind or more selected from each of components (α) and components (β) described below; a cyclic siloxane compound (B) containing per molecule two or more carbon-carbon double bonds that have reactivity to the Si—H groups; and a hydrosilylation catalyst (C); wherein the component (α) is a cyclic siloxane compound represented by formula (1) and contains two or more Si—H groups per molecule, wherein R1, R2 and R3 each are an alkyl group having 1 to 6 carbon atoms or a phenyl group, may be the same or different, a is any number of 2 to 10, b is any number of 0 to 8, and a+b≧2, and wherein the component (β) is a compound containing per molecule two or more carbon-carbon double bonds that have reactivity to the Si—H groups.
摘要:
The present invention provides: a positive photosensitive composition that yields an insulation layer superior not only in high transparency, but also in heat resistance enduring a temperature during the production of a substrate, solvent resistance, and anti-aging property as a permanent resist; a positive permanent resist utilizing the positive photosensitive composition; and a method for producing the positive permanent resist. The present invention provides: a positive photosensitive composition containing (A) a curable silicone resin having a silanol group, which resin has a structure obtained by a reaction between one or more cyclic siloxane compounds represented by the following general formula (1): and one or more arylalkoxysilane compounds represented by the following general formula (2): (B) diazonaphthoquinones, and (C) a solvent; a positive permanent resist using the positive photosensitive composition; and a method for producing the positive permanent resist.
摘要:
The present invention provides an inter-bus-bar built-in capacitor capable of reducing the size of a capacitor used in an inverter or the like or downsizing the capacitor, and provides power equipment as well as a power converting apparatus. The inter-bus-bar built-in capacitor is provided between a pair of opposing bus bars and includes a high-dielectric-constant material which has a relative dielectric constant of at least 50 when a voltage of 1,000 V is applied at a temperature of 25° C. Thus, it is possible to provide the inter-bus-bar built-in capacitor capable of reducing the size of a capacitor used in an inverter or the like or downsizing the capacitor and provide the power equipment as well as the power converting apparatus.
摘要:
A surface electrode (5) is installed on the light receiving surface of a solar cell element, the surface electrode (5) comprises three bus bar electrodes (5a) for extracting light-produced at the solar cell element to the outside and collecting finger electrodes (5b) connected to these bus bar electrodes (5a), and the bus bar electrodes (5a) are not less than 0.5 mm and not more than 2 mm in width and the finger electrodes (5b) are not less than 0.05 mm and not more than 0.1 mm in width. A high-efficient solar cell module can be obtained with substantially lowered resistance by increasing the number of bus bar electrode (5a) and thereby decreasing the lengths of the finger electrodes (5b).
摘要:
Disclosed is an inorganic polysilazane that undergoes less shrinkage during a calcination step in an oxidizing agent such as water vapor and is less prone to allow a silica film to suffer from the formation of cracks or peel off from a semiconductor substrate, and a silica film-forming coating liquid containing the inorganic polysilazane, and also provides an inorganic polysilazane and a silica film-forming coating liquid containing the same. The value of A/(B+C) is 0.9-1.5 and the value of (A+B)/C is 4.2-50. A=peak area within the range of from 4.75 ppm to less than 5.4 ppm. B=peak area within the range of from 4.5 ppm to less than 4.75 ppm. Peak area within the range of from 4.2 ppm to less than 4.5 ppm is represented by C in a 1H-NMR spectrum; and the polystyrene-equivalent mass average molecular weight is 2000 to 20000.
摘要翻译:公开了一种无机聚硅氮烷,其在诸如水蒸气的氧化剂中在煅烧步骤中经历较少的收缩,并且不容易使二氧化硅膜发生裂纹或从半导体衬底剥离而形成二氧化硅膜 - 形成含有无机聚硅氮烷的涂布液,并且还提供无机聚硅氮烷和含有该聚硅氮烷的二氧化硅成膜涂布液。 A /(B + C)的值为0.9-1.5,(A + B)/ C的值为4.2〜50。 A = 4.75ppm至小于5.4ppm范围内的峰面积。 B = 4.5ppm至小于4.75ppm范围内的峰面积。 在4.2ppm至小于4.5ppm的范围内的峰面积在1H-NMR光谱中由C表示; 聚苯乙烯当量的质均分子量为2000〜20000。
摘要:
A silicon wafer after being cleaned by using a cleaning liquid is rinsed by using carbonic water. According to such a silicon wafer cleaning method, generation of static due to a rinsing treatment is not caused, so that an electrostatic breakdown is not caused, adhesion of dirt to a cleaned silicon wafer surface due to the static is not caused, adhesion of metal impurities can be prevented in the rinsing treatment of the silicon wafer and, while giving consideration to the cost, furthermore, a rinsing treatment using a clean rinsing liquid free from causing any residue can be performed.
摘要:
A wheel truing apparatus adapted for use in a cylindrical grinding machine wherein a work head with a work spindle for support of a workpiece and a wheel head with a grinding wheel for grinding the workpiece are mounted on a bed for relative movement in a Z-axis direction parallel with the rotation axis of the work spindle and in an X-axis direction crossing the Z-axis direction, characterized in that the wheel truing apparatus comprises a rotary drive portion mounted on the work head or a member united therewith, and a wheel truing tool supported on the rotary drive portion for rotation therewith, the wheel truing tool being provided at its outer periphery with a truing portion for truing a grinding surface of the wheel brought into contact therewith, wherein the rotary drive portion is placed in a position adjacent to said work head in a tooling area defined by a stroke of the relative movements of said wheel head and said work head in the Z-axis direction and apart from said work spindle radially outward and is arranged in such a manner that the rotation axis line of said truing tool is oriented toward the rotation axis line of said grinding wheel in a condition where said truing portion is retained in contact with the grinding surface of said wheel, whereby the truing portion of said tool is brought into contact with the grinding surface of said wheel by relative movement of said wheel head to said work head for truing the grinding surface.