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30results about How to "Long anti-aging time" patented technology

Water absorption resin for well repair and leaking stoppage and synthesis method thereof

ActiveCN102181008AGood effect in sealing formation seepageThe synthesis method is simpleDrilling compositionSynthesis methodsNitrogen
The invention relates to water absorption resin for well repair and leaking stoppage. The water absorption resin is prepared by the following synthesis steps of: a, mixing 10 to 15 percent of 2-acrylamide-2-methylpropanesulfonic acid, 30 to 45 percent of acrylamide, 0.2 to 0.5 percent of N,N-methylenebisacrylamide and deionized water in a weight ratio with stirring to form a mixture, wherein the stirring time is 5 to 10 minutes and the stirring temperature is 30 to 50 DEG C; b, putting the prepared mixture into a polymerization reaction kettle, stirring the mixture, introducing nitrogen for 30 minutes to displace air in the polymerization reaction kettle, simultaneously heating the polymerization reaction kettle to the temperature of between 40 and 50 DEG C, then adding 0.03 to 0.08 weight percent of persulfate initiator into the mixture, performing polymerization reaction on the mixture to generate the water absorption resin, and preserving heat for at least 6 hours after the polymerization reaction starts; and c, drying the prepared water absorption resin at the temperature of not more than 120 DEG C for 24 hours till complete drying, and crushing the dried water absorption resin into granules with a diameter of 0.5 to 40 millimeters to obtain the water absorption resin for well repair and leaking stoppage.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Preparation method of polyolefin packaging film for solar cell module

The invention belongs to the technical field of solar packaging materials, in particular to a preparation method of a polyolefin packaging film for a solar cell module. the preparation method comprises the following steps: (1) adding raw materials into a stirring device, uniformly mixing, then adding into a single-screw extruder to carry out reaction extrusion, controlling the extrusion temperature of the screw extruder to be 80-100 DEG c and the screw rotating speed of 20-30 rpm, then extruding, casting and cooling to form a film; and (2) carrying out radiation treatment on the surface of oneside of the prepared packaging film in the step (1), and finally cutting and winding to obtain the polyolefin packaging film for the solar cell module; an anti-oxidant, an ultraviolet light absorbentand a light stabilizer are added to prevent the composition from being subjected to yellowing caused by transition thermal oxidative degradation in the blending extrusion process, so that yellowing and aging of the packaging film can be effectively prevented at the beginning of production of the packaging film, the aging and yellowing resistance of the packaging film after being subjected to solar radiation in the using process can be also improved.
Owner:CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL

Water absorption resin for well repair and leaking stoppage and synthesis method thereof

ActiveCN102181008BGood effect in sealing formation seepageThe synthesis method is simpleDrilling compositionSynthesis methodsNitrogen
The invention relates to water absorption resin for well repair and leaking stoppage. The water absorption resin is prepared by the following synthesis steps of: a, mixing 10 to 15 percent of 2-acrylamide-2-methylpropanesulfonic acid, 30 to 45 percent of acrylamide, 0.2 to 0.5 percent of N,N-methylenebisacrylamide and deionized water in a weight ratio with stirring to form a mixture, wherein the stirring time is 5 to 10 minutes and the stirring temperature is 30 to 50 DEG C; b, putting the prepared mixture into a polymerization reaction kettle, stirring the mixture, introducing nitrogen for 30 minutes to displace air in the polymerization reaction kettle, simultaneously heating the polymerization reaction kettle to the temperature of between 40 and 50 DEG C, then adding 0.03 to 0.08 weight percent of persulfate initiator into the mixture, performing polymerization reaction on the mixture to generate the water absorption resin, and preserving heat for at least 6 hours after the polymerization reaction starts; and c, drying the prepared water absorption resin at the temperature of not more than 120 DEG C for 24 hours till complete drying, and crushing the dried water absorption resin into granules with a diameter of 0.5 to 40 millimeters to obtain the water absorption resin for well repair and leaking stoppage.
Owner:CHINA NAT OFFSHORE OIL CORP +1

A kind of combined repairing agent formula, method and application of soil heavy metal tin and lead

The invention discloses a formula, methods and an application of a combined remediation agent for heavy metals tin and lead in soil. Zeolite, blast furnace slag, biochar formed by firing agriculturalwastes and cement are adopted as raw materials. The remediation agent concretely comprises, by mass, 2-4 parts of cement, 2-4 parts of blast furnace slag, 0.5-2.5 parts of zeolite, 0-1 part of biocharand 2-6.7 parts of cement; the remediation agent accounts for 1-5% of the weight of the contaminated soil, and the water content in a mixed system of the contaminated soil and the remediation agent is 10-30%; and the combined remediation agent is directly prepared by mixing the zeolite, blast furnace slag, biochar and cement, the heavy metal contaminated soil and the remediation agent are evenlymixed through a stirrer, and then a solidified sample is obtained through molding, demolding and curing in sequence. The remediation agent and the remediation method for the heavy metal composite contaminated soil are efficient and environmentally friendly, are suitable for high-concentration composite contaminated heavy metal contaminated soil, and particularly have a good solidification remediation effect on Sn and Pb, and the remediation agent has certain strength and frost resistance.
Owner:红河创新技术研究院有限责任公司 +1

Mounting method of military vehicle-mounted auxiliary night-vision device system

The invention discloses a mounting method of a military vehicle-mounted auxiliary night-vision device system. The mounting method of the military vehicle-mounted auxiliary night-vision device system comprises the steps of fixedly assembling a host and a host sucker component by using an equipped screw wrench; after assembling is finished, mounting the host sucker component to an appropriate position of a vehicle front windshield, tightening a locking handle, and confirming that reliable adsorption has been realized; determining the mounting position of a display screen and the number of suckercomponents according to a vehicle interior space situation; and then fixing the display screen in an appropriate position in a cab; enabling one end of a night-vision device data cable to penetrate out from an opened vehicle door to be connected to the host and then to be connected to a power supply cable; after cable connection is finished, confirming that part mounting and connection are accurate first and then starting a host power supply; by observing images, carrying out final adjustment on mounting; and after all adjustments are finished, pushing a power supply key for 2 seconds, switching off an equipment power supply to close and arrange the cable. According to the mounting method of the military vehicle-mounted auxiliary night-vision device system, the military vehicle-mounted auxiliary night-vision device system is mounted, the mounting is rapid and firm, and the use effect is perfect.
Owner:JIANGSU TAIZHOU CITY HUARUN TEXTILES CO LTD
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