57results about "Monocomponent polystyrene artificial filament" patented technology

The invention discloses a preparation method for the self-assembly of electrospinning rosary-like fibers, and belongs to the technical field of chemistry and material. By inspired by the situation that a cobweb can be assembled to a spindle structure in the wet environment respectively, a static electricity spinning device is utilized to prepare man-made fibers, and an aluminum bracket is used for receiving, so as to form the man-made fibers with the structure that nano-particles are adhered to surfaces; the man-made fibers are allowed to be assembled to the micron-sized ' rosary' structure respectively in the wet environment. According to the preparation method provided by the invention, the manufacturing process is simpler, the cost is lower, the operability is strong, and the method is suitable for mass productions; the respectively assembled fibers have stable quality and long practicability; the method can be used for collecting fresh water, reducing fog, solving the problem of serious water shortage in deserts and wastelands, and dispersing the steam around airports, street lamps, and signal lamps.

The invention relates to an equipment for preparing polymer nanometer fiber with regular arrangement and the method. The equipment comprises a spraying silk tube for containing polymer solution. A spraying nozzle is sealed and assembled at the end of spraying silk tube. The nozzle is connected with the positive electrode of high pressure generator and is used as anticathode. An aluminum foil is connected with the negative electrode of high pressure generator and is used as cathode, which is grounded at the same time. The aluminum foil is set between a first permanence magnet and a second one. The nozzle is faced to the aluminum foil. The electrical spinning method controlled by magnet is that soluble macromolecules are put into the corresponding solvent and the concentration is adjusted, the polymer solution with good performance for spinning is confected; magnetic nanometer grains are put into the polymer solution and magnetized polymer solution is formed. In the electrical spinning equipment controlled by magnet, the magnetized polymer solution becomes micro-nano continuous fiber under the effect of electric field and at the same time fibers are arranged along the direction of magnetic line under the effect of external magnetic field to form micro-nano fiber material with parallel arrangement.

The present invention relates to a process for the preparation of fibres and fibres prepared by the process. The process can provide discontinuous colloidal polymer fibres in a process that employs a low viscosity dispersion medium.

The invention discloses a Telescopic nonwoven fabric comprises elastic fiber and other elastic fiber or inelastic fiber which is different from the elastic fiber before, the block polymer comprises polymer block A whose main part is aromatic series vinyl-compounds with 10-50 weight % and polymer block B whose main part is the repeated unit in type (1). In the condition of 20 DEG C and 2 Hz, the elasticity storage modulus G' of the dynamic viscoelasticity is 1*104-8*106Pa, and the dynamic loss tangent of the dynamic viscoelasticity tan Delta is below 0.2. In type (1), random one or two in R1-R4 are methyl, the others are hydrogen atom.

The invention relates to a double-indication intelligent label capable of identifying meat quality, a manufacturing method of the double-indication intelligent label and application of the double-indication intelligent label. The manufacturing method of the double-indication intelligent label comprises the steps of preparing a base layer spinning solution, preparing a volatile biogenic amine sensing layer spinning solution, preparing a volatile H2S sensing layer spinning solution, preparing a double-layer fiber membrane and the like. The double-indication intelligent label can provide relevantinformation such as meat types, weights and meat manufacturers, and has multiple functions of prolonging the shelf life of fresh meat, monitoring the freshness of the meat in real time and the like,so that the intelligent label has a very wide application prospect.

Among others, the present invention provides devices for cell or tissue culture, comprising a three-dimensional structure, which further includes fibrils with beads and/or particles. The present invention also relates to novel methods for manufacturing devices for cell or tissue culture.

The invention discloses a fiber array controllable preparation method based on a super-bi-hydrophobic surface. The method includes the following steps that a, the super-bi-hydrophobic surface is prepared on one face of a 30 mm*30 mm*0.17 mm glass sheet, and a super-bi-hydrophobic surface glass sheet is obtained; b, a polymer and a solvent are fully stirred and mixed according to different mass ratios, and a polymer spinning solution is prepared; c, the super-bi-hydrophobic surface glass sheet is put on a clamp of a stepping device of a microfluid spinning machine, and the glass sheet rotates at the speed of 50 r/min-500 r/min; d, an injector is used for extracting the prepared polymer spinning solution, the polymer spinning solution is extruded to the upper face of the super-bi-hydrophobicsurface glass sheet at the speed of 0.05 mL/min-0.5 mL/min through a microflow pump of the microfluid spinning machine, the stepping device of the microfluid spinning machine transversely moves at the speed of 1 mm/s-10 mm/s, the polymer spinning solution is collected from the super-bi-hydrophobic surface glass sheet, and regularly-arranged polymer fibers are obtained. According to the method forcarrying out microfluid spinning on the super-bi-hydrophobic surface to prepare a fiber array, the obtained fiber array is higher in regularity, and the preparation method is simpler and easier to carry out.

A filter medium for oil-water separation, the filter medium being a composite, nanofibrous mat formed from electrospinning a single solution of one natural polymer and one synthetic polystyrene polymer together, where fibers of the natural polymer are reinforced by fibers of the synthetic polystyrene polymer. The nanofibrous mat may initially be hydrophobic and oleophilic, making it a suitable filter medium for separating oil from oil-water mixtures. The mat may be treated with one or more surfactants to change the surface wettability of the mat to hydrophilic and oleophobic for separating water from oil-water mixtures or to hydrophobic and oleophobic for separating oil and water droplets from wet gas.

The invention is suitable for the technical field of composite fiber materials, and provides an aerogel composite fiber material as well as a preparation method and application thereof. The preparation method of the aerogel composite fiber material comprises the following steps: dispersing aerogel particles in a good polymer solvent to obtain aerogel dispersion liquid; dissolving a polymer raw material in the good polymer solvent to obtain a polymer solution; mixing the polymer solution with the aerogel dispersion liquid to obtain a composite dispersion liquid; and performing spinning treatment on the composite dispersion liquid to obtain the aerogel composite fiber material. According to the embodiment of the invention, the aerogel composite fiber material capable of completely maintaining the aerogel microscopic skeleton completely maintains the thermal insulation performance of aerogel, has certain flame-retardant characteristic and carbon dioxide adsorption effect, and can be applied to military, industrial and civil fields such as high-performance fabrics, flame-retardant products and the like.

A fiber spinning process comprising the steps of providing a polymer solution, which comprises at least one weakly interacting polymer dissolved in at least one weakly interacting solvent to a spinneret; issuing the polymer solution in combination with a blowing gas in a direction from at least one spinning nozzle in the spinneret and in the presence of an electric field; forming fibers and collecting the fibers on a collector.

A method for producing a polymer, which contains: bringing a monomer containing a vinyl bond into contact with a compressive fluid and melting or dissolving the monomer containing a vinyl bond, followed by carrying out addition polymerization of the monomer containing a vinyl bond in the presence of an initiator.

The invention relates to a sound-absorbing and sound-insulating earplug and a manufacturing method thereof. The sound-absorbing and sound-insulating earplug includes two parts, an elastic shell and a shell interlayer. The elastic shell imitates the shape of a Helmholtz resonator and consists of a spherical cavity and a neck. The shell The interlayer is filled with porous sound-absorbing materials, which can be adapted to deal with different noise environments by adjusting the size of the new sound-absorbing earplugs and the spinning parameters of the porous sound-absorbing materials. It has the advantages of wide noise reduction frequency and good sound absorption effect.

A method for treating an oil spill includes providing a polystyrene-based sorbent in the form of polystyrene microfibers having a sorption capacity in the range of between 30 g/g to 217 g/g, measured as grams of oil sorbed per one gram of the sorbent; drenching the polystyrene microfibers in the oil spill to be treated; collecting the oil drenched polystyrene microfibers; and removing excess oil from the oil drenched polystyrene microfibers by compressing the microfibers. The method further includes dissolving the oil drenched polystyrene microfibers in a petroleum-based solvent in the form of gasoline having an octane number of ninety one, in which both the oil drenched polystyrene microfibers and the oil is soluble, thereby forming a solution comprising the gasoline having dissolved therein the polystyrene microfibers and the oil; and utilising the solution as a feedstock for feeding a refinery.

An emulsion composition, a polystyrene nano-fiber, a polystyrene nano-fiber product and a preparation method and use thereof, wherein the emulsion composition comprises a dispersed phase and a continuous phase, the dispersed phase contains a soluble salt and a first solvent, the continuous phase contains polystyrene, a second solvent and sulfonated polystyrene being syndiotactic polystyrene and/or isotatic polystyrene; the preparation of the emulsion composition: under heating and stirring, dropwise adding the dispersed phase into the continuous phase; the preparation of the polystyrene nano-fiber or polystyrene nano-fiber product: crystallize the above emulsion composition; the polystyrene nano-fiber prepared by the above emulsion composition has a pore structure, and the prepared product has a stable and controllable three-dimensional structure and multi-level and/or intercommunicated pore structure, and also has a high preparation efficiency, therefore the above polystyrene nano-fiber or product has excellent application prospects in absorption, adsorption, oil-water separation, and construction of special wettability surfaces.