3results about How to "Extended induction period" patented technology

This invention discloses a self-activated solid waste slurry and its preparation method, comprising waste slag, a solid waste cementitious material, and water. The components are expressed as follows by weight percentage or parts: 100 parts waste slag; 15-60 parts solid waste cementitious material, wherein the solid waste cementitious material consists of a silicon-aluminum rich precursor, a strongly alkaline activation source, and a rheology-modifying supplementary source, with a mass ratio of 1:(0.2-0.8):(0.1-0.4); and water. This invention eliminates the highly corrosive liquid chemical activator required in traditional alkaline activation materials, achieving self-activation through dry powder premixing of a strongly alkaline activation source, a silicon-aluminum rich precursor, and a rheology-modifying supplementary source.

The application provides a modified talcum powder and a preparation method thereof, first synthesizes a coupling agent with a hydroxyl group, then reacts the coupling agent with a long carbon chain carboxylic acid to generate a coupling agent with an ester group, and then grafts the coupling agent with the ester group to the surface of the talcum powder, so that a long carbon chain hydrophobic layer is formed on the surface of the talcum powder. The application also provides a high-water-resistance and aging-resistant biodegradable PBAT mulching film and a preparation method thereof, which comprises PBAT, PLA, calcium carbonate, modified talcum powder, antioxidant, ultraviolet absorber, chain extender and slip agent, and can strengthen the aging resistance of the PBAT mulching film and prolong the induction period of the mulching film. The prepared PBAT composite mulching film is easy to process, uniformly dispersed, high in water resistance and long in induction period, and can be used in crops with long growth periods such as cotton.

The application relates to the technical field of acrylamide production, in particular to a composite polymerization inhibitor, a preparation method and application thereof. The composite polymerization inhibitor comprises modified chitosan 40-60 parts, a nano-composite 40-60 parts and copper N,N-di-n-butyl dithiocarbamate 1-3 parts; wherein the preparation method of the modified chitosan comprises the following steps: S101, dissolving chitosan in a 1wt% acetic acid solution, stirring at 60 DEG C for 2h, adding dimethylamine sulfonamide chloride, adjusting the pH to 8, reacting for 4h, filtering and freeze-drying to obtain an intermediate product; S102, mixing the intermediate product with a modified solution, reacting under a nitrogen environment for 6h, performing dialysis treatment on the obtained reaction liquid for 48h, and freeze-drying to obtain the modified chitosan. The application provides a composite polymerization inhibitor, a preparation method and application thereof, so as to effectively inhibit the problem of monomer self-polymerization in acrylamide production.