6results about How to "Intensity controllable" patented technology

The invention relates to an epoxy-terminated polyurethane flexibilizer for bridge and tunnel pavement, and a preparation method and a use method thereof, and the flexibilizer is prepared by terminating a polyurethane prepolymer through an epoxy group of an epoxy compound under the catalytic action of nano-modified imidazole; wherein an epoxy group reacts with an NCO group at the end part of a polyurethane prepolymer, and a five-membered ring structure with high cohesive energy is introduced into a polyurethane molecular chain. A main chain of the epoxy-terminated toughening agent contains a five-membered ring structure, and the epoxy-terminated toughening agent is prepared from an epoxy group and an isocyanate group through catalysis of nano-modified imidazole at a relatively low temperature. Due to the fact that the cohesive energy of the five-membered ring is high, the steric hindrance effect is large, good high and low temperature stability is achieved, and the damping temperature range is wide. And after being cured, the curing agent has the properties of high-temperature rutting resistance, medium-temperature fatigue resistance, low-temperature crack resistance and the like, and the problem of insufficient toughness of an epoxy mixture in conventional pavement is solved.

The invention discloses a dextran-based HRP-goat anti-mouse IgG labeled antibody and a preparation method thereof, and the preparation method is characterized by comprising the following steps: S1, oxidizing dextran to obtain aldehyde group-containing dextran; s2, carrying out polymerization on the dextran containing the aldehyde group and horse radish peroxidase, so as to obtain a horse radish peroxidase polymer; s3, performing desalination and ultrafiltration on the horse radish peroxidase polymer to obtain an ultrafiltration product I; s4, connecting a goat anti-mouse IgG antibody to the ultrafiltration product I to obtain oxidized glucan coupled with goat anti-mouse IgG and HRP enzyme; and S5, purifying the oxidized dextran of the product coupled with the goat anti-mouse IgG and the HRP enzyme, so as to obtain the dextran coupled HRP-goat anti-mouse IgG labeled antibody. The dextran product obtained by the invention is wide in molecular weight coverage, different molecular weights can be selected to design polymer substances with different sizes, the number of aldehyde groups can be controlled to control coupling of different numbers of protein molecules under the same molecular weight, and the signal intensity is easy to control.

The utility model provides a wind power tower drum with a reinforcing function, which comprises a tower drum body, a concrete reinforcing member and a stress framework, the stress framework comprises a plurality of fastening hoops which are tightly held outside the tower drum body, a plurality of vertical connecting rods which are connected with the fastening hoops in a penetrating mode, a plurality of elastic adjusting rings which are tightly held outside the vertical connecting rods, and a reinforcing net which is tightly bonded with the concrete reinforcing piece. The fastening hoops and the elastic adjusting rings are alternately arranged in the axial direction of the tower drum body. The multiple vertical connecting rods are arranged in the circumferential direction of the fastening hoop. The reinforcing net is connected between the adjacent fastening hoops; the concrete reinforcing piece comprises a first-stage concrete reinforcing area, and the first-stage concrete reinforcing area is arranged between the reinforcing net and the tower drum body. The utility model has the advantages of reinforcing and supporting effect, reducing the phenomena of cracking of the outer surface of the concrete and falling of part of the concrete, and the like.

The invention belongs to the technical field of biology, and particularly relates to a blue-light-responsive corynebacterium glutamicum engineering strain and a construction method and application thereof.According to the corynebacterium glutamicum engineering strain, corynebacterium glutamicum serves as a host, a light-operated gene is introduced for blue-light response, and the blue-light-responsive corynebacterium glutamicum engineering strain is obtained. The light-operated gene is a BsLicTCAT-VVD fusion protein coding gene which is formed by fusing a DNA (Deoxyribose Nucleic Acid) sequence of an RNA (Ribonucleic Acid) binding structural domain LicTCAT for transcribing an anti-terminating protein LicT and a VVD protein coding gene sequence. Compared with the prior art, the light-controlled gene BsLicTCAT-VVD fusion protein coding gene is introduced to carry out blue light response, the target gene is constructed at the downstream of the RAT anti-terminator, and the expression of the target gene is regulated through a blue light signal, so that the corynebacterium glutamicum has the capability of finely regulating the expression quantity of various genes in cells.

The invention discloses a temperature-sensitive slow-release efficient transdermal transmission gel mask as well as a preparation method and application thereof, and relates to the technical field of hydrogel and cosmetics. The preparation method of the gel mask comprises the following steps: (1) carrying out a reaction on Pluronic F127 and acryloyl chloride to obtain PF127-DA; the preparation method comprises the following steps: reacting hyaluronic acid with glycidyl methacrylate to obtain HA-GMA; and (2) pre-dissolving and blending the PF127-DA and the HA-GMA obtained in the step (1) with a photoinitiator, a thickening agent, a functional component, a preservative and water, pouring the mixture into a mold after the mixture is completely dissolved, and carrying out photo-crosslinking under ultraviolet light to obtain the gel mask. The gel mask provided by the invention can reduce irritation to human skin, increase skin affinity, moisturize for a long time, optimize use feeling and achieve slow-release and permeation-promoting effects by means of in-situ release of thermosensitivity, and has a good application prospect.

The application discloses high-strength two-component polyurethane pouring sealant and a preparation method thereof, and belongs to the field of chemical industry. The product is matched by special two components, and can realize controllable strength and hardness of the product, is suitable for a fixing scene of a cylindrical electric core, and has good bonding strength, toughness, moisture and heat resistance, flame retardance and electric insulation, and the like, and has excellent comprehensive performance.