7 results about "Ethyl cyanoacrylate" patented technology

The invention discloses a masonry hole rapid layering repairing composite material and method based on solid waste, and belongs to the technical field of building material repairing and solid waste recycling. The composite material is composed of 10-30 parts of alpha-ethyl cyanoacrylate (ECA) and 1-30 parts of alkaline solid waste powder, such as combustion ash powder CAP and alkaline residue powder SRP. The repairing method comprises the steps that after holes are cleaned, a layering process is adopted, an alkaline powder layer with the thickness of 2-3 mm is firstly filled, then ECA is poured to infiltrate the holes and initiate second-level curing, and operation is cycled till the holes are filled. According to the invention, high alkalinity of industrial solid waste is utilized to initiate rapid polymerization of ECA, and the solid waste is used as a reinforcing filler; by optimizing the layering thickness, the technical problems of incomplete internal curing, concentrated heat release, generation of pores and layering and the like during large-volume repair are effectively solved, and ultra-rapid forming, high early strength, excellent interface bonding performance and overall compactness of the prosthesis are realized. The method is simple in process, green, economical, high in field adaptability and particularly suitable for rapid in-situ repair of cement-based materials and red brick masonry.

This utility model relates to the technical field of filling devices, and in particular to a quantitative filling device for ethyl α-cyanoacrylate. It not only facilitates the uniform filling of ethyl α-cyanoacrylate into packaging bottles via spiral blades, preventing the ethyl α-cyanoacrylate from solidifying and clogging the pipes, but also facilitates automatic loading and unloading of packaging bottles, improving work efficiency. The device includes a detection mechanism; it also includes a feeding mechanism, a storage mechanism, a filling mechanism, and a sealing mechanism. The feeding mechanism is installed on the detection mechanism and feeds the packaging bottles; the storage mechanism is installed on the detection mechanism and stores the ethyl α-cyanoacrylate; the filling mechanism is installed on the storage mechanism and stirs and conveys the ethyl α-cyanoacrylate; and the sealing mechanism is installed on the detection mechanism and facilitates the control of ethyl α-cyanoacrylate discharge.

The application discloses a lithium-sulfur battery gel electrode based on PECA-N slow release polymerization and a preparation method thereof, relates to the technical field of lithium-sulfur battery preparation, and is characterized in that, in the technical route of pre-freezing and low-temperature polymerization, the slow release polymerization of ethyl cyanoacrylate is realized by taking nitrogen-methyl pyrrolidone as an initiator, and the obtained polymer polyethyl cyanoacrylate (PECA-N) is used to prepare a gel electrode, so that the utilization rate of sulfur and the performance of the battery can be obviously improved, the stability of the electrode structure and the cycle life are greatly enhanced, and the occurrence of the "shuttle effect" is obviously slowed down.

This invention relates to the field of flexible electronics technology, and more particularly to a sacrificial layer coating solution, its preparation method, sacrificial layer film, and its applications. The raw materials for preparing the sacrificial layer coating solution, by weight percentage, include: 5-14% functional substrate, with the remainder being solvent; the functional substrate exhibits a volatile content ≥95% after being placed at 250°C for 3 minutes. This invention selects ethyl α-cyanoacrylate as the functional substrate and constructs a sacrificial layer coating solution system with excellent coating and curing properties using a mixed solvent of acetone and acetonitrile. This sacrificial layer material possesses the characteristic of rapid and complete vaporization under low laser energy triggering, enabling high-precision pattern transfer with straight edges and minimal burrs, and leaving no significant residue after transfer. This effectively improves transfer accuracy, transfer process efficiency, and the cleanliness of the donor substrate, meeting the requirements for high-precision transfer applications.

The invention relates to the technical field of photoresists, in particular to a preparation method of 2-carboxyl-2-cyano-4-norborninolide-5-methacrylate (2-carboxyl-2-cyano-4-norborninolide-5-methacrylate). The preparation method comprises the following steps: depolymerizing and distilling dicyclopentadiene in sequence to obtain cyclopentadiene; the preparation method comprises the following steps: carrying out polymerization reaction on ethyl 2-cyanoacrylate, a first organic solvent and cyclopentadiene to obtain a methyl ester intermediate; carrying out hydrolysis reaction and first purification treatment on a sodium hydroxide aqueous solution and the methyl ester intermediate to obtain an acid intermediate; carrying out oxidation reaction on formic acid, a hydrogen peroxide solution and the acid intermediate to obtain a bridged ring intermediate; 4-dimethylaminopyridine, a second organic solvent, methacrylic anhydride and the bridged ring intermediate are subjected to an esterification reaction and secondary purification treatment, and a target product is obtained. According to the preparation method, by optimizing a linear reaction process and intensifying step-by-step purification, impurity generation is effectively controlled while conventional reagents and operation are used, and finally, a high-purity target product is simply and conveniently prepared.

The invention discloses a low-whitening ethyl cyanoacrylate adhesive composition and a preparation method thereof, and relates to the technical field of instant dry adhesives. The low-whitening ethyl cyanoacrylate adhesive composition is prepared from the following components in parts by weight: 80 to 88 parts of alpha-ethyl cyanoacrylate, 1.2 to 4.0 parts of a cyanoacetamide volatile anchoring agent, 5.0 to 12.0 parts of a low vapor pressure cyanoacrylate monomer, 0.055 to 0.38 part of a stabilizer and 2.0 to 7.0 parts of a thickening agent. According to the low-whitening ethyl cyanoacrylate adhesive composition provided by the invention, the whitening phenomenon can be remarkably reduced, and the main monomer is still alpha-ethyl cyanoacrylate, so that the quick positioning, high shear strength and good adhesive property to various substrates of the traditional ECA adhesive are maintained; the comprehensive performance is balanced.