7results 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.

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.