7results about How to "Improve incompatibility" patented technology

The invention discloses a bio-based waterborne polyurethane coating and a preparation method thereof, and belongs to the technical field of coatings. The bio-based waterborne polyurethane coating prepared by the invention is prepared from the following raw material components in parts by weight: 70 to 80 parts by mass of bio-based polyurethane dispersion liquid, 40 to 60 parts by mass of polysiloxane dispersion liquid, 2 to 5 parts by mass of a cosolvent, 0.1 to 0.5 part by mass of a defoaming agent, 0.5 to 1 part by mass of a photoinitiator and 0.1 to 3 parts by mass of an antioxidant, wherein the bio-based polyurethane dispersion liquid is obtained by dispersing bio-based polyurethane in deionized water, and the bio-based polyurethane is obtained by reacting a polyisocyanate monomer, a catalyst, castor oil and a chain extender; the polysiloxane dispersion liquid is obtained by performing polycondensation on siloxane monomers and then dispersing the siloxane monomers in deionized water.

The invention discloses a transparent anti-yellowing UV adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The transparent anti-yellowing UV adhesive disclosed by the invention is prepared from the following raw material components in parts by weight: 20 to 40 parts by mass of epoxy resin base material, 5 to 15 parts by mass of modified polytitanium siloxane, 1.5 to 2.5 parts by mass of photoinitiator, 10 to 20 parts by mass of oxetane and 7 to 9 parts by mass of vinyl ether, the epoxy resin base material is prepared from any one or a combination of at least two of bisphenol A type epoxy resin YL980, hydrogenated bisphenol A type epoxy resin YX-8000D, alicyclic epoxy resin celloxide 2021P, alicyclic epoxy resin Epolead GT401 and alicyclic epoxy resin S-28; the modified titanium polysiloxane is obtained by carrying out condensation polymerization on gamma-glycidyl ether oxypropyl methyl diethoxy silane, gamma-methacryloyloxy propyl trimethoxy silane, vinyl methyl diethoxy silane and tetrabutyl titanate. The preparation method comprises the following steps: carrying out condensation polymerization on gamma-glycidyl ether oxypropyl methyl diethoxy silane, gamma-methacryloyloxy propyl trimethoxy silane, vinyl methyl diethoxy silane and tetrabutyl titanate to obtain the modified titanium polysiloxane.

The invention belongs to the technical field of polymer sheath materials for electric wires and cables, and relates to a polyamide composite material for a high-flexibility drag chain cable sheath. The polyamide composite material is prepared from the following components in parts by weight: 0.5 to 0.7 part of polysiloxane, 0.2 to 1.0 part of wollastonite, 0.08 to 0.1 part of electromagnetic rheological carbon fiber, 0.1 to 0.4 part of polyacrylonitrile fiber, 5 to 7 parts of organic silicone oil, 60 to 80 parts of polyamide, 20 to 40 parts of ethylene propylene diene monomer, 1 to 3 parts of polypropylene wax, 1.4 to 2.6 parts of antioxidant and 0.5 to 0.7 part of color masterbatch. The polyamide composite material prepared by the invention has excellent flexibility and wear resistance, can be processed and molded by a common extruder, and can be recycled.

The invention relates to the technical field of modified resin technology, in particular to a special material for large-diameter polyphenyl ether monofilament spinning and a preparation method and application thereof, and the special material for spinning is composed of 85-95 wt% of polyphenyl ether resin and 5-15 wt% of polydimethylsiloxane modified nano silicon dioxide. In the polydimethylsiloxane modified nano silicon dioxide synthesized by the invention, the content of the polydimethylsiloxane in percentage by mass is 30-50%. The nano silicon dioxide plays a role in fixing the polydimethylsiloxane, migration of the polydimethylsiloxane is inhibited, and the melt viscosity of the polyphenyl ether resin is reduced due to introduction of the polydimethylsiloxane, so that the melt fluidity of the polyphenyl ether resin meets the spinning requirement of large-diameter monofilaments.

The present invention discloses a lithium ion battery electrolyte, a lithium ion battery and a preparation method thereof. The electrolyte is composed of an organic solvent, an electrolyte salt and a functional additive. The organic solvent contains polyfluorinated benzene; the functional additive includes a functional additive I and a functional additive II; wherein R 1 ~R 4 are each independently selected from a hydrogen atom, a substituted or unsubstituted C 1 ~C 6 Alkyl, substituted or unsubstituted C 1 ~C 6 unsaturated hydrocarbon group, substituted or unsubstituted C 2 ~C 20 One of the groups formed by replacing an alkenyl group, a cyano group, an aromatic group having 6 to 18 carbon atoms with a carbonyl group, a cyano group, a halogen atom, a nitro group, a carboxyl group, or a sulfonic acid group, wherein the halogen atom is F, Cl, or Br; X is any one selected from C, N, or B; the mass of the additive I accounts for 0.2% to 3% of the total mass of the electrolyte; the mass of the additive II accounts for 0.3% to 2.4% of the total mass of the electrolyte.

The application discloses a method for improving the sensitivity of RPA-CRISPR-Cas12a detection and application thereof in one-tube detection of chikungunya virus, and relates to the technical field of biology.The full-length crRNA is reformed to form a truncated crRNA (Truncate crRNA), the non-key region is accurately shortened, the space-time regulation of Cas protein activity is realized, and the truncated crRNA plays a key role in CRISPR molecular detection (such as an RPA-CRISPR-Cas12a system). The method can significantly improve the specificity of RPA-CRISPR-Cas12a detection, effectively avoid cross-reaction, inhibit non-specific early activation, significantly reduce background signals, and provide an optimization strategy for developing a molecular diagnostic technology with higher sensitivity.

The invention discloses aliphatic amphiphilic dendritic polyester and a preparation method and application thereof.The polyester comprises, by weight, 60-100 parts of polyester polyol and 0-40 parts of solvent, the polyester polyol comprises the following chain segments: a first chain segment provided by a high-functionality polyol component I, a second chain segment provided by a high-functionality polyol component II, and a third chain segment provided by a high-functionality polyol component III; a second chain segment provided by an anhydride compound; the molecular weight is 1t; a third segment provided by a polyol component II having a molecular weight of 500; wherein the OH value of the polyester polyol is greater than or equal to 115 KOHmg / g; the acid value of the polyester polyol is greater than or equal to 50 KOHmg / g and less than or equal to 290 KOHmg / g; the molar ratio of the anhydride compound to the high-functionality polyol component I is 3-6, and the average functionality of the high-functionality polyol component I is greater than or equal to 3.