7results about How to "High nucleation efficiency" patented technology

The invention relates to a preparation method and application of a nucleating agent. The preparation method comprises the following steps: mixing solvent pure water, calcium hydroxide and fatty acid methyl ester sulfonate, and heating; dropwise adding hexahydrophthalic anhydride into the mixed solution, and after dropwise adding is completed, carrying out heat preservation reaction to obtain the calcium hexahydrophthalate. The product has excellent performance when used for thermoplastic resin such as polyolefin.

The application discloses a kind of biobased degradable modified plastics and its preparation method and application, the modified plastics are with polylactic acid and poly (3-hydroxybutyric acid-co-3-hydroxyhexanoate) as matrix, with hyperbranched polyester as compatibilizer, with zinc phytate as nucleating agent, the end hydroxyl group of hyperbranched polyester and the ester group of two polyesters form hydrogen bond, effectively inhibit dispersion phase reunion;Zinc phytate promotes polylactic acid crystallization;The prepared modified plastics have excellent impact toughness and heat resistance, and all raw material components are derived from biomass, and the degradation rate is more than 90% under composting conditions for 180 days, suitable for food packaging and disposable product field.

The invention provides a nucleating agent as well as a preparation method and application thereof. The structure of the nucleating agent is shown as a formula I, the nucleating agent belongs to an organophosphate compound nucleating agent in an alpha nucleating agent, contains a benzene ring and a carbon-carbon triple bond, has relatively good thermal stability, and ensures that the nucleating agent is not molten, not decomposed and in a microparticle shape at a polymer melting point of EVOH in a subsequent application process of preparing the EVOH; meanwhile, the para-position and the carbon-carbon triple bond of the benzene ring are connected with polar groups, so that the whole nucleating agent shows polarity and can be uniformly dispersed in polar EVOH. Furthermore, a polar group in a carbon-carbon triple bond, namely, R1 contains a flexible rotatable functional group, so that the flexibility of the EVOH crystal substance can be improved. The EVOH with excellent comprehensive performance can be obtained by adding a small amount of EVOH into the EVOH.

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 present invention discloses an amide type β crystal nucleating agent and a preparation method and application thereof. The amide type β crystal nucleating agent of the present invention is prepared by an amidation reaction between tetrahydrophthalic anhydride / phthalic anhydride and an aliphatic diamine, or is prepared by an amidation reaction between tetrahydrophthalic anhydride / phthalic anhydride and an aliphatic diamine and then a salt-forming reaction with a metal salt. The amide type β crystal nucleating agent of the present invention has the advantages of low dosage, low production cost, high nucleation efficiency, good thermal stability, etc., and can be synthesized at room temperature, the synthesis conditions are mild, the raw material cost is low, and it is suitable for large-scale industrial application.

The invention discloses a fluororesin microporous foam material and a preparation method thereof. The preparation of the foam material comprises the following steps: preparation of modified porous SiO2 and melt blending thereof with homopolymerized PVDF and P (VDF-HFP) copolymer to prepare a foaming precursor, and then subjecting the foaming precursor to irradiation cross-linking and high-pressure low-temperature infiltration, and finally foaming with a supercritical fluid. The foaming material comprises 3-15 parts by weight of modified SiO2, 5-20 parts by weight of homopolymerized PVDF, and 60-90 parts by weight of P (VDF-HFP) copolymer. By adding modified SiO2, high solubility in supercritical fluid is achieved, the diffusion path is shortened, homopolymerized PVDF and P (VDF-HFP) copolymer are melt blended to broaden the foaming window, irradiation cross-linking improves melt strength, and a high-ratio fluororesin microporous foam material with a uniform pore structure is prepared, the foaming material has excellent performance, a simple preparation method, and high production efficiency.

The invention discloses a polypropylene material, a polypropylene beta nucleating agent and a preparation method thereof, and belongs to the technical field of fine chemical engineering. The polypropylene beta nucleating agent has a structural formula as shown in a formula I: # imgabs0 #, p represents any integer from 0 to 7, and R is selected from any one of hydrogen, halogen, nitryl and amino; m is any one of magnesium and calcium. In addition, the invention also provides a preparation method of the polypropylene beta nucleating agent, and the preparation method comprises the following steps: heating a raw material A and a raw material B in an ethanol solution to prepare a compound as shown in a formula II; dissolving the compound as shown in the formula II in THF-MeOH-H2O, then adding LiOH.H2O, and heating to obtain a compound as shown in a formula III; and mixing the compound as shown in the formula III with alkali liquor, and dropwise adding an alkaline earth metal salt solution under a heating condition to obtain the polypropylene beta nucleating agent. The invention provides a novel polypropylene beta nucleating agent, and the beta crystal form nucleation efficiency is up to 90% or above.