32results about How to "Improve long-term use stability" patented technology

The invention provides a perovskite solar cell and a preparation method thereof. The perovskite solar cell comprises a transparent substrate arranged in a stacked layer, a negative electrode, a down-conversion luminescent layer, an electron transfer layer, a perovskite layer, a hole transport layer, an up-conversion luminescent layer and a positive electrode, wherein the down-conversion luminescent layer is arranged between the negative electrode and the electron transport layer. The perovskite solar cell has the advantages that the down-conversion luminescent layer and the up-conversion luminescent layer are respectively additionally arranged on the upper surface and the lower surface of the perovskite solar cell, so that ultraviolet light and infrared light which cannot be absorbed by the perovskite solar cell can be converted into visible light, the utilization rate of sunlight is increased, the photoelectric conversion efficiency of the perovskite solar cell is further improved, and the long-term stability of the solar cell can be enhanced.

The invention relates to an insulating material for bus, which comprises the following components by weight: 65-85 parts of bisphenol A-type epoxy resin, 0.06-0.11 part of nanometer organic montmorillonite, 15-35 parts of a curing agent, 280-380 parts of SiO2 micro powder, 0.01-0.05 part of ZnO micro powder, and 0.05-0.15 part of BaTiO3 micro powder. The insulating material of the invention can operate under awful weather conditions, is widely applicable to power plants, power stations, transformer substations, photovoltaic power stations, wind power generation transformer substations, is an important accessory for power transmission equipment, is an important material for processing high voltage electric power matching insulating parts, and has good insulating properties and water resistance. The invention also provides a preparation method of the insulating material.

The invention discloses an organic silicon electronic pouring sealant with good ultraviolet-resisting cooling performance for a PCB (Printed Circuit Board). The organic silicon electronic pouring sealant is prepared from the following raw materials in parts by weight: 40 to 50 parts of vinyl end silicone oil-1, 50 to 60 parts of vinyl end silicone oil-2, 0.38 to 0.5 part of 12 percent platinum catalyst, 0.02 to 0.04 part of ethynylcyclohexanol, 25 to 30 parts of vinyl silicone resin, 1-allyloxy-2, 14.8 to 16.8 parts of 3-epoxypropane 1, 23 to 25 parts of 1,3,5,7-tetramethylcyclotetrasiloxane, 2.7 to 3.6 parts of silane coupling agent A171, a proper amount of hydrogen-containing silicone oil, 3.4 to 4 parts of graphene, 0.2 to 0.4 part of silane coupling agent KH1510, a proper amount of acetone and a proper amount of deionized water. The pouring sealant prepared by the invention is simple in preparation process, wide in raw material source, high in operability and high in quality stability of a product; in addition, the pouring sealant has the advantages of excellent weather fastness, heat dissipation, corrosion resistance, high strength and the like, and is worthy of being popularized.

The invention discloses a disengagement prevention and single suspension ring prevention lifting system, and belongs to the field of oil drilling equipment. The system comprises a disengagement prevention component, the disengagement prevention component comprises a stop block and a lock block, the stop block is in locked connection with the lock block, a sensing component is arranged on the stop block, and a trigger block is arranged on the inner wall of a lower notch; the system further comprises a single suspension prevention component and a disengagement prevention mechanism, the single suspension prevention component comprises a controller, the controller is in wireless electric connection with the sensing component, the disengagement prevention mechanism comprises a locking block and a baffle block, the locking block is in locking connection with the baffle block, the locking block comprises a latch hook portion and a stress portion, the baffle block performs pendulum motion around a rotating shaft, the baffle block swings clockwise and is locked with a latch hook portion of the locking block, the baffle block swing anticlockwise and is unlocked with the locking block, the baffle block comprises a locking portion and a disengagement prevention portion, the locking portion is located inside the upper notch of a suspension lug, and the disengagement prevention portion is located inside a lug hole of the suspension lug. A suspension ring can be firmly blocked into the lug hole, and the using stability of the whole lifting system is ensured; lifting of the single suspension ring can be avoided, and potential safety hazards are eradicated.

The invention relates to a packaging structure and a preparation method thereof, and a display panel. The packaging structure is used for packaging a light-emitting device, the light-emitting device comprises a pixel area used for arranging a light-emitting unit and a non-pixel area surrounding the pixel area, and the packaging structure comprises a first inorganic barrier layer, a buffer layer and a second inorganic barrier layer which are arranged in a stacked manner; the buffer layer comprises a plurality of organic buffer units, and each organic buffer unit is arranged in the pixel area and is independently arranged corresponding to one light-emitting unit. According to the display packaging structure, each sub-pixel can be provided with an independent buffer structure, water, oxygen and the like can be prevented from diffusing to the adjacent sub-pixels, a failure area is further prevented from being enlarged, and the packaging effect and the long-term use stability of the panel are improved.

The invention relates to the technical field of wall plates, in particular to a processing method for wooden handicraft. According to the processing method for the wooden handicraft, high quality woodwhich is free from pests and diseases and not easy to crack is adopted and is cut into at least two groups of raw materials; each group of the raw materials comprises four sections of timbers with the same length, width and height; and the timbers are ground, subjected to pattern carving, polished, under-painted with seal coat, sprayed with primer coat for more than two times, sprayed with colored varnish, and finally, packaged to form the handicraft. The effects of preventing corrosion, resisting crack, resisting deformation, and improving the long-term service stability can be achieved; twogroups of the handicraft form a pair of handicraft, and each group of the handicraft formed by one section or splicing four sections of timbers; and therefore, the purpose of combining the essence ofnational customs and culture is achieved.