10results about How to "The polymerization process is simple" patented technology

The invention relates to a preparation method of a universal super-hydrophobic fluoride-free waterproof agent with strong washability. According to the method, a polymeric monomer and a polymerizable silane coupling agent are subjected to free radical copolymerization or polycondensation to obtain an emulsion A, and a silanol-based compound formed by hydrolysis of the silane coupling agent interacts with the surface of a fiber base material to enhance the adhesive force of microspheres on the fiber surface; meanwhile, organic silicon in the emulsion B is cured on the surfaces of the polymer microspheres and the fibers to form a film, so that the firmness of the fabric is further enhanced, and the washability of the fabric is remarkably improved while an excellent hydrophobic effect is ensured. According to the invention, simplification and batch production of the production process are effectively realized, and meanwhile, the requirements of modern industry on economic and green production are met.

The invention relates to a targeted drug delivery carrier based on mesoporous polydopamine nanoparticles and application thereof.The targeted drug delivery carrier is galactose modified mesoporous dopamine coordinated with manganese ions, lysine is adopted in the carrier synthesis step to provide an alkaline environment needed by dopamine polymerization, the polymerization process is simplified, and the drug delivery efficiency is improved. Meanwhile, lysine can be introduced into the mesoporous polydopamine; and the drug loading capacity of the carrier is improved. The carrier gathers multifunctionality of drug delivery, tumor imaging and treatment, provides a comprehensive new method for tumor treatment, and enhances individuation and precision of treatment.

The invention relates to a preparation method of a thermosensitive decoloration temperature-adjustable super-hydrophobic textile. According to the method, a microcapsule emulsion A with a thermosensitive decoloration and phase-change material as a core material and a polymer as a shell layer and a waterproof agent emulsion B are obtained through free radical copolymerization or polycondensation, the thermosensitive decoloration and phase-change microcapsule emulsion and the waterproof agent emulsion are applied to after-finishing of textiles, a simple padding process is adopted, and the temperature-sensitive decoloration and phase-change microcapsule emulsion and the waterproof agent emulsion are obtained. And meanwhile, a layer of polymer film is formed on the surface of the fiber by utilizing the waterproof agent in the emulsion B, so that the fabric is endowed with multiple functions of thermosensitive decoloration, temperature adjustment, super-hydrophobicity and the like. According to the invention, the polymerization process is simplified, and the chromatic aberration problem caused by polydopamine is eliminated; by adding the recessive dye and the color developing agent, the thermosensitive decoloration function is increased, the color of the fabric becomes light along with temperature rise, light reflection is increased, and the temperature adjustable performance is further enhanced by adding the phase change material.

The invention discloses a privacy protection model training method and system suitable for a distributed new energy station, and the method comprises the steps: judging whether the model performance of a local model of each new energy station in a current round is improved compared with that in a previous round in the federal training process of a second round and a subsequent round; if the new energy station is lifted, the new energy station is used as a participant of the current round of model aggregation operation, otherwise, the new energy station is empty in the current round, and the new energy station with improved performance is screened to participate in model aggregation, so that the communication cost waste caused by sending highly similar local model weight parameters is effectively avoided, and the communication efficiency is improved. The data volume needing to be processed by model aggregation is reduced, the model aggregation process is simplified, and the training speed is increased.

The invention belongs to the technical field of coatings, and discloses a high-precision temperature-indicating early-warning coating material and a preparation method thereof. According to the coating material, composite resin is used as a paint base, and diatomite modified polyacrylic acid / carboxymethyl cellulose composite hydrogel loaded with a temperature-sensitive color-changing active component is added. The thermochromic active component is a PdCl2 / MoCl5 double-doped Ag3InCl6 metal complex, and the activity of the complex is improved by metal doping; diatomite modified carboxymethyl cellulose / polyacrylic acid composite hydrogel is used as a carrier to load a temperature-sensitive color-changing active component, the modified hydrogel has better adsorbability and sensing performance, the compatibility of the active component and a paint base is improved, and color changing is more sensitive; and polyisobutene, alkyd resin and polyester resin are compounded as a paint base, so that the wear resistance, chemical corrosion resistance and weather resistance of the coating are improved. The coating material prepared by the invention has high temperature sensitivity, and is simple and convenient in preparation process and environment-friendly.

The invention discloses a 4-methyl-1-pentene polymer and a preparation method thereof. First, propylene dimerization is carried out in a first reactor to synthesize a 4-methyl-1-pentene monomer, and then 4-methyl-1-pentene and alpha-olefin are polymerized in a second reactor to synthesize a high-melting-point 4-methyl-1-pentene polymer. The polymer prepared by the preparation method of the present invention has the characteristics of high selectivity and high melting point. The polymer prepared by the preparation method of the present invention can be used in the fields of medical devices, LED modules, etc.

The present invention belongs to the technical field of branched polyolefin materials, and discloses a branched olefin polymer, a preparation method therefor and the use thereof. The branched olefin polymer is obtained by polymerizing at least one C4-C20 nonterminal olefin monomer with optional ethylene, propylene, and C4-C20 terminal olefin monomers; and the branched olefin polymer has the following characteristics: (a) a molecular weight of 20000 to 500000 g / mol; (b) a molecular weight distribution of 3.5 to 6.0, and a bimodal structure characterized by GPC; (c) a melting point of 0°C to 110°C and a glass-transition temperature of -80°C to -50°C; and (d) having 20 to 200 methyl groups per 1000 methylene groups.

The invention belongs to the technical field of polyamide hot melt adhesives, and particularly relates to a copolyamide hot melt adhesive for bonding a low-surface-energy fabric and a preparation method of the copolyamide hot melt adhesive. A low-surface-energy flexible organic silicon system and an alicyclic rigid group are introduced into a dimer acid type polyamide system at the same time, so that the prepared copolyamide hot melt adhesive product has high cohesive force, adhesive strength and low-surface-energy performance; the problems that an existing copolyamide hot melt adhesive is complex in preparation process and has limitation in the aspect of environmental protection are solved. Compared with a traditional copolyamide hot melt adhesive, the copolyamide hot melt adhesive has the advantages of being environmentally friendly, resistant to water washing and resistant to low temperature while maintaining high adhesive performance, and the performance of a product is greatly improved through the beneficial effects; the product has high matching degree with the customer process, the polymerization process is simple and efficient, the production is convenient, and the economic value is good.

The invention provides a cup carbazolyl porous polymer as well as a preparation method and application thereof, and belongs to the field of organic polymer materials. The carbazolyl porous polymer has the advantages of hierarchical pore structure, large specific surface area, good stability, simple polymerization process and the like, and can be used in the fields of volatile organic pollutant adsorption, sewage treatment and the like.