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申请号:201811035473.X 公开号:CN110878130A 主分类号:C08F110/02
摘要:【中文】本发明涉及一种聚乙烯催化剂,具体涉及一种负载型铬和茂双金属催化剂、其制备方法及其应用。所述的负载型铬和茂双金属催化剂,包括无机载体和负载的两种活性组分,无机载体为无机氧化物,两种活性组分包括铬氧化物和茂金属组合物。本发明将茂金属活性中心和铬金属活性中心负载到同一经过钛改性的载体上,催化剂具有优秀的氢调响应性和共聚性能,可以方便的调节熔体流动速率及密度,其生产的高密度聚乙烯分子量分布较宽,具备双峰聚乙烯的特性,同时催化剂还具有较高活性,是一种高性能负载型铬和茂金属双金属催化剂。本发明还提供其制备方法和应用,科学合理、简单易行,用于合成乙烯均聚物和乙烯与α‑烯烃共聚物。 【EN】The invention relates to a polyethylene catalyst, in particular to a supported chromium and metallocene bimetallic catalyst, a preparation method and application thereof, wherein the supported chromium and metallocene bimetallic catalyst comprises an inorganic carrier and two loaded active components, the inorganic carrier is an inorganic oxide, and the two active components comprise a chromium oxide and a metallocene composition.
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申请号:201811230291.8 公开号:CN111072817A 主分类号:C08F110/02
摘要:【中文】本发明属于高分子材料技术领域,具体涉及一种茂金属聚乙烯树脂,并进一步公开其制备方法,以及催化合成聚乙烯的应用。本发明所述的茂金属聚乙烯树脂,是在特定制得的茂金属催化剂催化下经聚合反应制得,所得聚合物树脂颗粒形态好,性能优良,细粉率低,具有较高地表观密度(0.30g/ml以上)。 【EN】The invention belongs to the technical field of high polymer materials, and particularly relates to metallocene polyethylene resin, and further discloses a preparation method and application of the metallocene polyethylene resin in catalytic synthesis of polyethylene. The metallocene polyethylene resin is prepared by polymerization reaction under the catalysis of a specific prepared metallocene catalyst, and the obtained polymer resin has good particle shape, excellent performance, low fine powder rate and higher apparent density (more than 0.30 g/ml).
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申请号:201811505450.0 公开号:CN109599895A 主分类号:H02J3/38(2006.01)I
摘要:本发明提供一种基于聚类分析的分布式光伏接入方法,包括以下步骤:S100、通过卫星航拍和现场勘查评估分布式光伏资源总量,将屋顶分为光伏屋顶和普通屋顶;S200、建立分布式光伏屋顶比例图;S300、根据分布式光伏屋顶比例图进行聚类分析,初步确定分布式光伏插座点的位置;S400、将分布式光伏满载接入各分布式光伏插座点,判断对电网的电压质量、谐波、短路电流和负载率的影响是否满足指标要求,若不满足指标要求,重新进行聚类分析,优化分布式光伏接入分布式光伏插座点的位置;S500、根据现场的实际环境和地理资产因素,最终确定分布式光伏插座点的位置;S600、将分布式光伏通过分布式光伏插座点接入,使得分布式光伏的接入安全可靠。
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申请号:201910465068.X 公开号:CN110106443A 主分类号:C22C38/02
申请人:山东寿光巨能特钢有限公司 申请日:2019.05.30 公开日:2019.08.09
摘要:本发明公开了一种一种超高强度螺栓用圆钢生产方法,包括如下步骤:(1)采用铁水和废钢作为原料,利用超高功率偏心底式电炉进行冶炼,(2)将物料利用LF精炼炉进行精炼,(3)利用VD真空炉脱气,并喂入包芯线,(4)采用弧形连铸机进行连铸处理,(5)轧钢,(6)开坯,(7)推钢式加热炉进行钢坯加热,(8)堆垛缓冷,(9)热处理。本发明采用更加优化的热处理工艺,使产品的力学性能发挥更加突出满足产品的高强度和高韧性的要求。
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申请号:201910470626.1 公开号:CN110184933A 主分类号:E01D21/00
申请人:中铁十六局集团有限公司;中铁十六局集团第五工程有限公司 申请日:2019.05.31 公开日:2019.08.30
摘要:本发明涉及一种钢箱梁桥面铺装施工方法,S1、钢桥面喷砂除锈处理;S2、钢桥面防水层的施工:喷砂除锈进行后,进行防腐蚀底层施工,施工完成后进行干燥处理;待防腐蚀底层固化后,用甲基丙烯酸树脂防水材料喷涂,施工完成后,施工胶粘剂,施工完成后固化处理;S3、浇筑式聚合物改性沥青混合料的施工:采用摊铺方案进行施工,浇筑式摊铺后及时撒布沥青预拌碎石,并使其嵌入浇筑式沥青混合料表面;S4、改性沥青SMA混合料的施工:改性沥青SMA混合料采用梯形摊铺机铺设,铺设后进行压实处理,压实处理包括初压、复压和终压。本发明的有益效果为:铺装面层综合性能较高,具有良好的高温稳定性、抗滑性能、低温抗裂性、平整度、抗疲劳性能和防水效果。
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申请号:201910750280.0 公开号:CN110972458A 主分类号:H05K9/00
摘要:【中文】本发明公开了一种无线充电屏蔽片的制备方法及屏蔽片,属于电磁屏蔽技术领域,方法包括:步骤S1,对软磁材料带材进行热处理,形成基材;步骤S2,形成一屏蔽层单元;步骤S3,至少一层所述屏蔽层单元叠加形成屏蔽片结构;步骤S4,通过表面设置预设图形的辊轮对屏蔽片结构加压碾碎;步骤S5,将屏蔽片结构的上下两面分别与散热膜贴合,形成无线充电屏蔽片;屏蔽片包括:屏蔽片结构,散热膜,屏蔽片结构包括至少一层屏蔽层单元,屏蔽层单元包括:基材,胶体;上述技术方案的有益效果在于:图形化处理后得到的屏蔽片形状纹路大小均匀,缝隙大小一致性好,且胶体填充性好,屏蔽片表面的阻抗变大,涡流损耗小,介电性能稳定,易于批量生产。 【EN】The invention discloses a preparation method of a wireless charging shielding sheet and the shielding sheet, belonging to the technical field of electromagnetic shielding, wherein the method comprises the following steps: step S1, carrying out heat treatment on the soft magnetic material strip to form a base material; step S2, forming a shielding layer unit; step S3, overlapping at least one layer of shielding layer unit to form a shielding sheet structure; step S4, pressing and grinding the shielding sheet structure through rollers with preset patterns on the surfaces; step S5, the upper surface and the lower surface of the shielding sheet structure are respectively attached to the heat dissipation film to form a wireless charging shielding sheet; the shielding sheet includes: shielding piece structure, the heat dissipation membrane, shielding piece structure include at least one deck shielding layer unit, and the shielding layer unit includes: a substrate, a colloid; the beneficial effects of the above technical scheme are that: the shielding piece obtained after the graphical treatment has uniform shape and grain size, good gap size consistency, good colloid filling property, large impedance on the surface of the shielding piece, small eddy current loss, stable dielectric property and easy batch production.
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申请号:201911169340.6 公开号:CN110993684A 主分类号:H01L29/417
申请人:【中文】西安电子科技大学【EN】XIDIAN University 申请日:2019.11.26 公开日:2020.04.10
摘要:【中文】本发明公开了基于阴阳极环形嵌套的大功率GaN准垂直肖特基二极管及其制备方法,主要解决目前GaN准垂直肖特基二极管输出功率无法满足更高功率需求的问题。其自下而上包括:衬底(1)、成核层(2)、缓冲层(3)和n+型GaN层(4),n+型GaN层(4)的上部设有n‑型GaN层(5)和阴极(6),n‑型GaN层(5)的上部设有阳极(7),该阴极和阳极采用环形嵌套结构,即阳极是以实心圆为中心,外部分布多个开口圆环的同心结构;阴极是分布在阳极环之间的多个开口圆环,形成阳极环与阴极环的同心环形交替嵌套结构。本发明降低了电场的边缘效应,提高了GaN准垂直二极管输出功率密度,可用于限幅器、微波整流和功率开关电路。 【EN】The invention discloses a cathode and anode annular nesting-based high-power GaN quasi-vertical Schottky diode and a preparation method thereof, and mainly solves the problem that the output power of the conventional GaN quasi-vertical Schottky diode cannot meet the requirement of higher power. It includes from bottom to top: the device comprises a substrate (1), a nucleating layer (2), a buffer layer (3) and an n + type GaN layer (4), wherein the n-type GaN layer (5) and a cathode (6) are arranged on the upper part of the n + type GaN layer (4), an anode (7) is arranged on the upper part of the n-type GaN layer (5), and the cathode and the anode adopt an annular nested structure, namely the anode is a concentric structure with a solid circle as the center and a plurality of open circular rings distributed outside; the cathode is a plurality of open circular rings distributed among the anode rings to form a concentric ring-shaped alternate nesting structure of the anode rings and the cathode rings. The invention reduces the edge effect of the electric field, improves the output power density of the GaN quasi-vertical diode, and can be used for amplitude limiters, microwave rectification and power switch circuits.
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申请号:201911191209.X 公开号:CN110942895A 主分类号:H01F27/06
摘要:【中文】本发明公开了变压器减振装置以及减振装置铺设装置,属于电力设备领域,减弱变压器作业时产生的振动以及噪音,安装方便便于施工,本发明的变压器减振装置,包括支撑板和用于承载变压器并与所述支撑板契合的减振底座,在承载变压器时所述减振装置间隔放置,所述支撑板横向放置于所述第二支撑座表面,所述减振底座包括第一支撑座和第二支撑座,所述第二支撑座内设有向下开口的支撑空间,所述第一支撑座伸入所述支撑空间且所述第一支撑座端面设有第一凸台,所述第一凸台与所述支撑空间顶壁之间间隔设置弹性件,所述弹性件将变压器的重力以及作业时产生的振动转化为自身形变的力。 【EN】The invention discloses a transformer vibration damping device and a vibration damping device laying device, belonging to the field of power equipment, reducing vibration and noise generated during transformer operation, being convenient to install and construct, the transformer vibration damping device comprises a support plate and a vibration damping base which is used for bearing a transformer and is matched with the support plate, the vibration dampers are arranged at intervals when a transformer is loaded, the supporting plate is transversely arranged on the surface of the second supporting seat, the vibration reduction base comprises a first supporting seat and a second supporting seat, a supporting space with a downward opening is arranged in the second supporting seat, the first supporting seat extends into the supporting space, a first boss is arranged on the end face of the first supporting seat, the first boss with the interval sets up the elastic component between the support space roof, the elastic component turns into the power of self deformation with the gravity of transformer and the vibration that produces during the operation.
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申请号:201911211038.2 公开号:CN110839449A 主分类号:A01G9/14
摘要:【中文】一种包括降温系统的智能降温大棚,包括棚体,棚体包括设有外遮阳装置、洒水装置、顶起装置、内遮阳装置、喷雾装置和水帘‑抽风降温系统;与现有技术相比,通过自上而下的多层降温装置的工作,可单独或多个同时进行工作,从而将大棚内的温度降低至所需温度;在蓄水池的作用下实现水帘装置的水循环,尽可能节约水资源的情况下实现大棚内的降温;种植土壤中设置有地灌网结构,通过控制浇灌之间来确保土壤的湿度;降温水帘和地灌网中的水根据需要可进行加热,从而使得植物接收的水分复合植物的生长温度需求。 【EN】An intelligent cooling greenhouse comprising a cooling system comprises a greenhouse body, wherein the greenhouse body comprises an outer sun-shading device, a water spraying device, a jacking device, an inner sun-shading device, a spraying device and a water curtain-air draft cooling system; compared with the prior art, the multi-layer cooling device from top to bottom can work independently or simultaneously, so that the temperature in the greenhouse is reduced to the required temperature; the water circulation of the water curtain device is realized under the action of the water storage tank, and the temperature reduction in the greenhouse is realized under the condition of saving water resources as much as possible; a ground irrigation net structure is arranged in the planting soil, and the humidity of the soil is ensured by controlling irrigation; the water in the cooling water curtain and the ground irrigation net can be heated according to the needs, so that the water received by the plants meets the growth temperature requirements of the plants.
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申请号:201911211179.4 公开号:CN110972807A 主分类号:A01G18/00
摘要:【中文】一种灵芝的轮作方法,包括以下步骤,步骤A:第一轮作物的种植为,进行灵芝的种植;步骤B:灵芝采收后,对种植土壤进行消毒处理;步骤C:第二轮作物的种植为,在土壤里种植羊肚菌;步骤D:第三轮作物的种植为,采收羊肚菌,开始种植绞股蓝;与现有技术相比,通过羊肚菌和绞股蓝的种植,种植品种的多样性不会造成连作障碍,可保证种植的产量和品质,灵芝、羊肚菌和绞股蓝的种植时间相连接,可充分利用土壤的使用率,降低土壤的闲置率,羊肚菌和绞股蓝的种植时间较长,便于工作人员的种植,灵芝种植过后,使土壤更疏松,有利于羊肚菌更快生长、发菌,种植羊肚菌后再种绞股蓝,会使绞股蓝的根系更加发达,绞股蓝产量更高。 【EN】A rotation method of lucid ganoderma comprises the following steps: planting the first crop, namely planting the lucid ganoderma; and B: after the lucid ganoderma is harvested, disinfecting the planting soil; and C: planting the second crop by planting morchella in soil; step D: the third crop is planted by harvesting Morchella esculenta and planting herba Gynostemmatis; compared with the prior art, through the planting of morchella and gynostemma pentaphylla, the diversity of planting varieties can not cause the continuous cropping obstacle, can guarantee the output and the quality of planting, the planting time of glossy ganoderma, morchella and gynostemma pentaphylla is connected, the rate of utilization of soil can be fully utilized, the idle rate of soil is reduced, the planting time of morchella and gynostemma pentaphylla is longer, the staff's of being convenient for planting, after glossy ganoderma plants, make soil more loose, be favorable to morchella to grow faster, spawn running, replanting gynostemma pentaphylla after planting the morchella, can make the root system of gynostemma pentaphylla more flourishing, gynostemma pentaphylla output is higher.
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