5results about How to "Increased tangle" patented technology

The application provides a static spinning solution containing pyridinium propane sulfonate, a preparation method thereof and a static spinning method thereof. The static spinning solution comprises an additive pyridinium propane sulfonate, PAN polyacrylonitrile and DMF. Experiments prove that the static spinning solution has low cost, can improve the entanglement degree between molecular chains, inhibits the breakage of a solution jet in a static spinning process, and the micro-morphology is improved.

The application discloses a spherical aluminum nitride silicon grease high-thermal-conductivity interface material composition and belongs to the technical field of thermal-conductivity interface materials.The spherical aluminum nitride silicon grease high-thermal-conductivity interface material composition comprises, in terms of weight parts, 50-80 parts of spherical aluminum nitride and 50-100 parts of modified silicon oil, the modified silicon oil is silicon oil grafted with adamantane molecules and fluorine-containing alkyl groups on the side chain, and the spherical aluminum nitride is prepared by using aluminum powder with low, medium and high particle sizes, wherein the spherical structure guarantees the fluidity of the silicon grease, the introduction of the adamantane molecules and the perfluoroalkyl molecules improves the heat resistance of the silicon oil and reduces the migration rate of the silicon oil, different particle sizes of the spherical aluminum nitride are used in combination for compounding, the filler with a smaller particle size can fill the gaps between the fillers with a larger particle size, a more perfect thermal-conductivity channel is constructed, the gap rate between the filler particles is greatly reduced, and the thermal-conductivity performance of the material is improved.

A strain-sensing hydrogel with anti-interference properties, its preparation method and application, Ti3C2T x AAM monomers undergo a free radical aggregation reaction, concentrating on both sides of the solution to form a hydrogel isolation layer with anti-interference properties. The central part is a viscous solution. PVA-assisted cryo-casting induces the directional growth of ice crystals, and the aggregation and entanglement of PVA chains yields a strain-sensing hydrogel with anti-interference properties. In a photo-initiated free radical polymerization system, LAP acts as a photoinitiator and PEG as a crosslinking agent to induce a free radical aggregation reaction of AAM. Ti3C2T x The hydrogel, possessing light-absorbing properties, forms an anti-interference hydrogel isolation layer. The sensing layer of the hydrogel consists of physically cross-linked PVA chains. During the directional growth of ice crystals, electrostatic interactions between the PVA polymer chains form hydrogen bonds, resulting in a high-strength, high-toughness hydrogel sensing layer. The PVA and Ti3C2T... x Hydrogen bonds and crystalline domains are formed between AAm, enhancing the mechanical properties of the multilayer hydrogel.

The invention relates to a fluoride-free flame-retardant polyphenyl ether resin composition as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The resin composition comprises the following raw material components in parts by weight: 67-80 parts of polyphenyl ether resin; 3 to 10 parts of HIPS (High Impact Polystyrene) resin; 10 to 16 parts of a phosphate ester flame retardant; 3 to 8 parts of cross-linked styrene toughening master batch; 1-3 parts of an inorganic nano flame retardant; 0.2 to 0.5 part of an antioxidant; 0.1 to 0.5 part of a light stabilizer; and 0.5 to 1.0 part of a lubricant. Compared with the prior art, the fluoride-free flame-retardant polyphenyl ether resin composition disclosed by the invention solves the problems that the conventional flame-retardant polyphenyl ether resin needs an anti-dripping agent PTFE for synergistic flame retardance but cannot meet the PFAS prohibition, and the fluoride-free flame-retardant polyphenyl ether scheme adopting phosphonitrile for flame retardance needs high cost, and has a wide application prospect.

The invention discloses a safe and non-toxic vulcanization accelerator for rubber and a preparation process thereof, and belongs to the technical field of rubber.The preparation process comprises the steps that a phenolic resin precursor is formed through condensation polymerization and then calcined to form porous carbon microspheres, then the porous carbon microspheres are acidified and then subjected to surface esterification reaction to be grafted with sodium lignin sulfonate, and then a zinc metal framework is formed through hydrothermal coordination; a large number of attachment sites can be provided for molecules of lignin through the space confinement effect of the porous carbon microspheres, the zinc metal framework can be firmly fixed and prevented from being agglomerated by means of subsequent growth of the zinc metal framework through the porous structure, meanwhile, migration of the zinc metal framework in rubber processing is limited, the zinc metal framework can be stably dispersed in a rubber matrix, and the service life of the zinc metal framework is prolonged. The vulcanization reaction is ensured to be synchronously carried out in the rubber, and local over-vulcanization or under-vulcanization is avoided.