5results about How to "Preparation process safety" patented technology

The application discloses a drilling cementing wall stabilizing agent and a preparation method and application process thereof, and belongs to the technical field of oil field chemistry, and particularly relates to a preparation of the drilling cementing wall stabilizing agent. The preparation method of the drilling cementing wall stabilizing agent can be that thermoplastic resin, a curing agent and inorganic powder are uniformly mixed and stirred at normal temperature and normal pressure according to proportions. The wall stabilizing agent material has the advantages of simple production process, safety, low material cost and convenience for large-scale production and application. The product can not only plug pores and reduce filtration loss, but also cement sand and mudstone strata and improve stratum pressure-bearing capacity, so that the purpose of stabilizing a well wall is achieved. The application further provides an application process of the drilling cementing wall stabilizing agent, which comprises a suitable drilling fluid system and an adding amount and construction process under different stratum porosities and different working conditions.

The invention belongs to the field of organic functional molecules and organic polymer functional materials, and particularly relates to a reactive aggregation luminescent flame-retardant organic functional material and a preparation method thereof. A flame-retardant group DOPO is introduced into molecules containing an aggregation-induced emission TPE group, the flame-retardant group DOPO which simultaneously contains the TPE group with aggregation-induced emission performance and a flame-retardant function in the structure is designed and synthesized, and the flame-retardant group DOPO has good flame-retardant performance while the aggregation-induced emission function is guaranteed.

This invention discloses a podophyllotoxin-9-fluorenylmethanol small molecule prodrug nanoparticle, its preparation method, and its applications. The podophyllotoxin-9-fluorenylmethanol small molecule prodrug co-assembled nanoparticles are either polyethylene glycol-modified podophyllotoxin-9-fluorenylmethanol small molecule prodrug co-assembled with gossypol, or podophyllotoxin-9-fluorenylmethanol small molecule prodrug co-assembled with gossypol and loaded with hydrophobic fluorescent substances. The podophyllotoxin-9-fluorenylmethanol small molecule prodrug is prepared by linking podophyllotoxin and its compounds with 9-fluorenylmethanol via disulfide bonds. This invention is the first to construct a carrier-free hybrid nanoassembly of gossypol and PPT oxidation-sensitive prodrug. Gossypol-mediated prodrug co-assembled nanoparticles can be used for precision cancer chemotherapy in tumor treatment, precisely achieving PPT "enhancement," improving the therapeutic efficiency of PPT prodrugs, opening an ultra-low-dose chemotherapy window for PPT, and solving the problems of delayed and insufficient prodrug activation.

The application discloses a SrTiO3-based ceramic with ultrahigh dielectric constant and low dielectric loss, and a chemical composition of the ceramic is Sr 1‑1.5x Gd x TiO3 (0.008≤ x ≤0.014). A preparation method comprises the following steps: according to a stoichiometric formula Sr 1‑1.5x Gd x TiO3, primary ball milling, drying, grinding, briquetting, pre-sintering, obtaining a block B, secondary ball milling, drying, grinding, sieving, pressing a green body, and sintering. 1‑1.5x Gd x The SrTiO3-based ceramic material has ultrahigh dielectric constant ε r (>10 5 ) and low dielectric loss tanδ (<0.05), the preparation process is simple, the material cost is low, the sintering is carried out in a nitrogen environment, the process is safe, and the process is green and environment-friendly.

The present application relates to a kind of deodorization catalysts suitable for vehicle-mounted incineration toilet and its preparation method and use, the preparation method includes the following steps: providing aluminum-based carrier;- copper compound, nickel compound, iron compound and manganese compound are sequentially loaded on the aluminum-based carrier, and the deodorization catalyst is prepared.The deodorization catalyst includes aluminum-based carrier and copper compound, nickel compound, iron compound and manganese compound loaded on the aluminum-based carrier.The deodorization catalyst of the present application is stable in nature, can be mass-produced in industrialized batch, has integrated structure, is suitable for vehicle-mounted scene, can effectively catalyze degradation of substance with irritating odor at lower temperature, realizes the effective removal of odor of excrement combustion tail gas.