10results about How to "Reduce crystallization" patented technology

This invention discloses a modified perovskite thin film, a perovskite composite film, their preparation method, and a solar cell. This invention introduces a compound of formula I into perovskite, utilizing the hydrazine group on its structure to selectively reduce formula I. 0 This reduces the possibility of ion migration, thereby preventing performance degradation caused by ion migration. Simultaneously, it participates in the nucleation and crystallization regulation of perovskite; the O atoms with lone pairs of electrons can coordinate with Pb atoms, thus delaying the crystallization process of perovskite materials to a certain extent, contributing to the acquisition of high-quality perovskite thin films. This invention further modulates the Fermi level of the thin film through substituent design, reducing charge accumulation at the heterojunction and further improving device efficiency and operational stability, demonstrating great potential in improving the optoelectronic performance and stability of devices.

This invention relates to the field of electrolyte filling technology, and specifically discloses a vacuum filling machine for electrolyte filling in lithium battery processing. The machine includes a worktable, a transmission component fixedly connected to the inner side of the worktable, a feeding component slidably connected to the inner side of the worktable, and the inner side of the feeding component fixedly connected to the output end of the transmission component. A bracket is fixedly connected to the top of the worktable. In this vacuum filling machine for electrolyte filling in lithium battery processing, the scraper, relying on a contact shaft, a first spring, and an arc-shaped guide plate, forms an elastic floating structure. This allows it to closely conform to the side contour of the filling needle, scraping away waste liquid and impurities without dead angles, while avoiding rigid contact that could scratch the needle. The arc-shaped design of the inner side of the guide plate directs and collects the scraped waste liquid, preventing random splashing and structurally reducing waste liquid residue and crystal accumulation. The scraped waste liquid can be quickly drawn into the collection mechanism by negative pressure through the slot plate and connecting pipe.

The application belongs to the technical field of engineering plastics, and particularly relates to the field of ultrasonic welding PET compositions, and discloses a PET resin composition which comprises the following components: 60-75 parts of PET resin, 5-15 parts of PETG resin, 2-5 parts of a toughening agent, 18-25 parts of glass fiber, and 0.2-0.8 parts of a nucleating agent. The application provides a PET composition with high ultrasonic welding strength, so that the integrity and overall strength of a PET product after ultrasonic welding are improved, and the cracking and separation of the welding position can be effectively avoided. The PET resin composition of the application is applied to a PET resin material product which needs to be ultrasonically welded, and the related product prepared by the PET resin composition has excellent ultrasonic welding strength and excellent mechanical properties.

Disclosed are a low-pressure casting multi-sprue process and device for an aluminum alloy wheel. A multi-sprue casting method is adopted, and a plurality of sprues are arranged at the end of the inner rim of a wheel, so that molten aluminum enters the inner rim first, then enters from a center sprue after a mold cavity at the rim is full of the molten aluminum, and is pressurized and cooled after the mold cavity is full of the molten aluminum. During cooling, starting from the outer rim of the wheel filled with the molten aluminum last, side mold ring water coolers are started. The outer rim begins to solidify in the cooling process, and the spokes and the rim are simultaneously solidified in sequence, so that the crystallization and solidification time of the casting at the rim and the spokes is greatly shortened, the compactness of the internal structure of the casting is improved while the production efficiency is improved, the mechanical properties of the materials are good, and particularly, the elongation of the spokes is greatly improved.

The utility model belongs to the field of beverage processing, and particularly relates to a beverage machine capable of adjusting honey content, which comprises a machine body, and a pair of honey storage tanks are fixedly connected to the side wall of a first slotted hole; a pair of conveying pipes is fixedly connected between the pair of honey storage tanks; pressure pumps are fixedly connected to the end parts of the pair of conveying pipes; the side wall of the pressure pump is fixedly connected with a pair of output pipes; a heating device is fixedly connected to the side wall of the honey storage tank; during working, honey in the honey storage tank is pumped into the pressure pump through the conveying pipe, at the moment, the heating device fixedly connected to the side wall of the honey storage tank with the small volume heats the interior of the honey storage tank with the small volume, and then the honey is sent out through the pair of output pipes fixedly connected to the side wall of the pressure pump; the honey at different temperatures can be mixed through the step, the concentration of the honey is more balanced, the honey in different tanks can be stored in storage environments at different temperatures through operation of the heating device, honey crystallization can be reduced through low temperature, honey dissolution can be promoted through high temperature, and the possibility that the concentration accuracy is affected by temperature fluctuation is reduced.

This invention discloses a polyester material, a heat-shrinkable film, its preparation method, and its applications. The raw materials for preparing the polyester material include a diacid, a diol, a chain extender, a stabilizer, and a catalyst; wherein the diacid comprises: 90 mol%~95 mol% polyterephthalic acid and 5 mol%~10 mol% isophthalic acid; the diol comprises: 65 mol%~78 mol% ethylene glycol, 18 mol%~28 mol% 1,4-cyclohexanediol, and 4 mol%~12 mol% diethylene glycol; the chain extender is 2,2'-(1,3-phenylene)-dioxazoline, added in an amount of 0.2%~0.8% of the total mass of the diol and the diacid; the molar ratio of carboxyl groups to hydroxyl groups in the diacid and the diol is 1:1~1.05. The polyester material of this invention possesses excellent transparency, shrinkage rate, and strength, and has a low initial shrinkage temperature, making it particularly suitable for applications such as heat-shrinkable films. This invention also provides a heat-shrinkable film, as well as the polyester material, a method for preparing the heat-shrinkable film, and their applications.

The application discloses a kind of electrode material of tin phosphide composite tin element and its preparation method and application, belong to battery material technical field.Salt and graphene oxide are mixed, and precursor Sn6O4 (OH) 4 / GO is obtained by reacting with alkaline solution;Sn6O4 (OH) 4 / GO and NaH2PO2·H2O are 1:10 mass ratio, in inert atmosphere, with 5 ℃ / min speed to 500 ℃ calcination 3 h, and Sn / Sn4P3 / RGO is obtained.The application uses Sn6O4 (OH) 4 / GO with low crystallinity, rich hydroxyl and rich defect as reactive precursor, by controlling the amount of phosphorus source, phosphorization temperature and heating rate, tin element and tin phosphide form in situ in the reduction of graphene oxide conductive network Close heterojunction.The composite material can inhibit tin particle migration, agglomeration, improve electron / ion transport kinetics, suitable for lithium ion battery and sodium ion battery.

This invention relates to the field of valve technology, specifically to a pneumatic regulating valve for persulfate production, comprising a fixed part, a flexible hose part, and an adjusting part. The flexible hose part is located within an outer tube and includes an elastic hose and two sets of tensioning groups. The two sets of tensioning groups are arranged in a mirror image with a gap between them. The elastic hose corresponding to the gap is a closing section with multiple clamping areas. An outer ring is detachably fixed to the elastic hose, and the tensioning groups stretch the elastic hose. The two sets of tensioning groups are controlled to align any clamping area with the adjusting group. If persulfate passes through the elastic hose when the adjusting part closes, the adjusting part opens and the tensioning groups are controlled to move to align with other clamping areas before closing again. Through the cooperation of the elastic hose and the two sets of tensioning groups, persulfate is unlikely to crystallize or scale on the inner surface of the elastic hose. The elastic hose has no internal mechanical structure, ensuring a seamless connection. The cooperation of multiple clamping areas, tensioning groups, and the adjusting part ensures proper closure.

The application discloses a composite hole transport layer, a preparation method and a perovskite solar cell, and belongs to the technical field of perovskite solar cells. The composite hole transport layer comprises aluminum oxide nanoparticles and Me-4PACz, and the mass ratio of the aluminum oxide nanoparticles and the Me-4PACz is 1: (10-100). The application effectively reduces the surface contact angle of the composite hole transport layer by blending the aluminum oxide nanoparticles and the Me-4PACz molecules in one hole transport layer, realizes the improvement of wettability, and adopts a blending strategy, so that part of the Me-4PACz molecules are directly exposed to the surface of the composite hole transport layer. In the area not covered by the aluminum oxide nanoparticles, perovskite keeps direct contact with the Me-4PACz. The existence of the aluminum oxide nanoparticles also helps to form a stable interface structure, and the long-term stability of the device is significantly improved.

The utility model relates to a kind of storage tanks convenient for discharging easily frozen material, belong to the field of storage tank, including tank body, steam coil is arranged in the tank body, the side pipe blow-off pipe of tank body is connected, purge coil is arranged in the tank body, the purge coil is annular, the side of purge coil is connected with input pipe, the input pipe extends to the outside of tank body, the input pipe is connected nitrogen source, the bottom of purge coil is provided with multiple purge pipes, multiple purge pipes are distributed along purge coil length direction, the purge pipe is inclined to the direction of approaching blow-off pipe downward.This utility model nitrogen is blown to the bottom material in tank body, can speed up material flow speed, slow down material condensation speed, at the same time, play stirring action, make up and down cold and hot material mix;Nitrogen blows all remaining material to blow-off pipe, can prevent material from gathering around tank body, reduce material residue around tank body, speed up material gathering at blow-off pipe, accelerate emptying speed.