51results about How to "Reduce foreign matter" patented technology

A laminated film including a thermoplastic resin film and an laminated layer that is formed on at least one side of the thermoplastic resin film and comprises (A) a composition, (B) an epoxy crosslinking agent and (C) an acrylic resin having an alkyl chain of 18 to 25 carbon atoms is characterized in that the composition (A) is a composition containing at least a polythiophene and a polyanion and/or a composition containing a polythiophene derivative and a polyanion, the laminated layer contains 15 to 100 parts by weight of the acrylic resin (C) having an alkyl chain of 18 to 25 carbon atoms based on 100 parts by weight of the sum of the composition (A) and the cross-linking agent (B) and/or its reaction product, at least one side of the laminated film has a three-dimensional average surface roughness (SRa) of 3 to 50 nm, and the laminated film contains less than 10 internal contaminant particles with an average particle size of at least 100 mum per 1 m<2>, so that it has high level of electrical conductivity, good releasability and water resistance, and also has oligomer precipitation-preventing properties during heating.

The invention relates to a polyphenylene sulfide fiber spinning technology which comprises the steps as follows: (1) pre-processing materials: mixing graphite powder with a silane coupling agent to obtain modified graphite, and mixing the modified graphite and polyphenylene sulfide resin at a high speed so as to obtain a mixture, and finally pre-crystallizing and drying the mixture in a vacuum drying box to obtain dried powder with less than 50 ppm of water; (2) melting and spinning: feeding the dried powder into a double-screw extruder for melting and spinning so as to obtain a melt; (3) slowly cooling and cooling: thermally forming the smelt after forming silk through a spinneret plate, and then transferring to a slow cooling area, and finally transferring to a cooling area to solidify and form; and (4) drafting and finalizing: carrying out oil applying and silk guiding on the solidified and finalized fiber, and then drafting and finalizing at three times so as to obtain the short fiber with the linear density of 11 dte x. The polyphenylene sulfide fiber spinning technology is low in cost and easy in industrial production; and the fiber material prepared via the technology has good performance.

The present invention relates to a polycarbonate-resin manufacturing method whereby a polycarbonate resin that contains little foreign material and exhibits excellent thermal stability, hue, and mechanical strength is manufactured efficiently and stably.

The invention discloses moving type bulk pepper collecting equipment, which comprises a carrying vehicle body, wherein a feeding pipeline, a stone removing and rotating device, a cyclone separator, a high-pressure fan, a wind closer and a chain plate conveyor are arranged on the carrying vehicle body; the outlet end of the feeding pipeline is connected with the stone removing and rotating device; the stone removing and rotating device is connected with the cyclone separator; the upper end of the cyclone separator is connected with the high-pressure fan; the lower end of the cyclone separator is connected with the wind closer; the wind closer is connected with the chain plate conveyor. The moving type bulk pepper collecting equipment has the advantages that the pepper bulk loading is realized; a woven bag is not used in the whole process; the labor consumption and the work intensity of people are reduced.

A polycarbonate-resin manufacturing method in which a polycarbonate resin is obtained by polycondensing feedstock monomers including at least a dihydroxy compound represented by general formula (1) and the resulting polycarbonate resin is supplied to an extruder, kneaded, and then discharged from a die. The weight (W) of the amount of resin extruded by the extruder per hour, in kilograms per hour, and the cross-sectional area (S) of the barrel of the extruder, in square meters, satisfy relation (2): 12,000<=W/S<=60,000...(2).

The invention discloses a luminescence display appliance, an etching method and a display device. The etching method comprises the steps: to-be-etched metal film layers are coated with photoresist, exposed and developed; the metal layers are etched through preset etching conditions; and the preset etching conditions comprise one or more of etching gas and the power of a bias power supply, whereinthe etching gas comprises boron trichloride with the flow rate being larger than 60 sccm and argon, and the power of the bias power supply is larger than or equal to 300 W. Physical etching can be enhanced through the etching conditions, etched by-products growing on the etched side walls after a reaction between chlorine and metal can be effectively removed by enhancing physical etching, thus filling of subsequent film layers is facilitated, the electrical property of the metal film layers and the film forming quality of the subsequent film layers are improved, thus the product yield is increased, and the product reliability is improved; and removing of the by-products on the side walls of the metal film layers can be further enhanced.

The casting apparatus comprises a crucible (20) that stores a melt and has an opening on its upper side, a heater for heating the crucible, and a device for supplying an inert gas to an upper portion of an interior of the crucible, where the inert gas supplying device extends to the upper portion of the interior of the crucible and includes a gas flow passage and a gas discharging hole located at a distal end portion of the inert gas supply device. The gas flow passage includes a main gas supply tube placed in a distal end of upper portion of the crucible. The casting apparatus comprises a crucible (20) that stores a melt and has an opening on its upper side, a heater for heating the crucible, and a device for supplying an inert gas to an upper portion of an interior of the crucible, where the inert gas supplying device extends to the upper portion of the interior of the crucible and includes a gas flow passage and a gas discharging hole located at a distal end portion of the inert gas supply device. The gas discharge hole is provided such that a flow of the supplied inert gas from the gas discharging hole is parallel to a surface of the melt in the crucible or is inclined at a predetermined angle to the surface of the melt in the crucible. The gas flow passage includes a main gas supply tube placed in a distal end of upper portion of the crucible, and the gas discharge hole is formed in a side surface of a distal end portion of the gas supply tube. The gas flow passage further includes gas supply pipes branched from a distal end of the main gas supply pipe. The branched gas supply pipes are arranged parallel to the surface of the melt in the crucible. The gas discharge hole is provided in a distal end of the branched gas supply pipes. An independent claim is included for a casting process.

The invention discloses a devolatilization device and an SAN resin devolatilization process. A material distributor is arranged at a material inlet of the devolatilization device, a plurality of holes are formed in the material distributor, flow guide wires are arranged at the holes, and barbs are arranged on the flow guide wires. According to the devolatilization process, the two-stage series devolatilization device is adopted for removing volatile components, the devolatilization device is adopted for devolatilization, the film forming property of the material is good, the volatile component content of the obtained material is small, and the devolatilization efficiency is high.

The invention provides a colored photosensitive resin composition containing a colorant, resin, polymerized compounds, and a polymerization initiator; the colorant is a colorant containing a dye; the resin is resin containing a copolymer which comprises the following structure units: a structure unit derived from at least one of a group formed by compounds selected from unsaturated carboxylic acid and unsaturated carboxylic acid anhydride, a structure unit derived from monomers with cyclic ether structures with a carbon atom number of 2-4 and ethylene unsaturated bonds, and a structure unit derived from a monomer shown in formula (x); with respect to the total amount of structure units forming the copolymer, the content of the structure unit derived from the monomer shown in formula (x) is more than 0.1 mol% and less than 20 mol%. [In formula (x), Ra1 represents an alkyl with a hydrogen atom number or a carbon atom number of 1-4; Xa1 represents a single bond, -Xa2-, *-Xa2-O-, *-Xa2-S- or *-Xa2-NH-; Xa2 represents an alkylene with a carbon atom number of 1-6; * represents a bonding position with O].

A polybutylene terephthalate (PBT) which contains titanium and has a titanium content of 33 ppm or less; and a composition comprising the polybutylene terephthalate. In a preferred embodiment, the polybutylene terephthalate exhibits a crystallization temperature in the course of the decrease of temperature of 170 to 190 DEG C, has a concentration of a terminal vinyl group of 0.1 to 10 mueq/g, exhibits a haze of its specific solution of 10 % or less, exhibits an increase of the concentration of a terminal carboxyl group of 0.1 to 30 mueq/g after being heat-treated under specific conditions, and contains foreign particles having a size of 5 mum or larger in an amount of 50 pieces/10 g-polymer or less. The PBT and a composition comprising the PBT are excellent in color tone, hydrolysis resistance, heat stability, transparency and processability, and is reduced in the content of foreign matter, and thus can be suitably used for a film, a monofilament, a fiber, an electric or electronic part, an automobile part or the like.

The invention discloses a preparing method for a polyester composition. An esterification reaction between aromatic dicarboxylic acid and aliphatic dihydric alcohol is firstly performed in the method;an antimony compound, an inorganic acid containing phosphorus, or an organic compound containing phosphorus and phosphoric acid alkali metal salt are added to the reaction system from the end of esterification reaction to the beginning of a polymerization reaction to begin the polymerization reaction; in the time period from the inherent viscosity of the polymerized reactant reaching 0.5dl/g to the end of the polymerization reaction, a manganese compound is added to the reaction system to the continue the polymerization reaction until the end of the polymerization reaction. The gel fraction of the polyester composition prepared through the method is under 5wt% in a N2/O2 gas mixture (oxygen concentration is 1 vol%) after thermal treatment of 300DEG C * 6hr and the polyester composition can be used for preparing thin films and fibers with little foreign material.

The invention discloses a manual ultrasonic nondestructive testing probe clamping device. The manual ultrasonic nondestructive testing probe clamping device comprises a handle, a shell and an internal clamping device; and the handle is connected to the shell, a probe is arranged in the shell and connected to the inner wall of the shell through an internal clamping device, a through hole is formed in the handle, and a probe wire of the probe penetrates through the shell and the through hole of the handle to be led out. The device can be used for manual ultrasonic nondestructive testing work under most working conditions, has the telescopic property, is suitable for probes of most specifications and sizes, and is good in applicability. Problems of probe falling and hand contamination of personnel in nuclear power field application can be greatly reduced.

The invention discloses a concrete mixer with a filtering function. The concrete mixer comprises a mixing box arranged as a hollow structure, the inner wall of the bottom of the mixing box is providedwith two first rotating slots, the top of the mixing box is provided with two rotating holes, fixing rods are fixedly mounted on both sides of the top of the mixing box, a same fixing plate is fixedly mounted on the top of the two fixing rods, the bottom of the fixing plate is provided with two second rotating slots, and a same rotating column is rotatably mounted in the second rotating slot, therotating hole, and the first rotating slot. The concrete mixer disclosed by the invention has the advantages of high practical performance, simple structure, and convenient operation; the mixed raw material can be quickly and conveniently filtered, foreign matters in the mixed raw material are reduced, at the same time, the mixing box can be quickly and conveniently buffered and the mixed material in the mixing box can be evenly mixed, the damage of the mixing box is reduced, and needs of people are met.