31results about How to "Meet spinning requirements" patented technology

The invention relates to a method for using a double screw extruder to prepare celluloses / ionic liquids spinning solution and the preparation comprises that the celluloses are uniformly mixed with the ionic liquids according to the weight ratio of 5:95 to 25:75, and then the mixture is put into the double screw extruder which has two vacuum orifices and the screw length diameter ratio of which is36:1 to 60:1, the control range of temperature is 40 to 120 DEG C, and the light brown and transparent celluloses / ionic liquids spinning solution is formed after strongly mixing and dissolving for 8 to 40 minutes and vacuum dehydration; the obtained celluloses / ionic liquids spinning solution is supercharged by a booster pump and sprayed from a spinneret after coming into a metering pump by a pre-filter, and then cellulose fibers are formed by a plurality of steps such as solidification, washing, cutting and drying, etc. The invention not only shortens the dissolution time of the celluloses but also leads to the more fully mixing and dissolving of materials, and achieves the purposes of energy-saving, high efficiency, decreasing degradation and improving the quality of spinning original solution, so the industrialization becomes easier.

The invention discloses a fiber pretreatment device and method. The fiber pretreatment device comprises a cotton feeder, a wool mixer, a fan, a cotton conveying channel, an automatic humidification device and a wool bin which are connected in sequence by pipes; the automatic humidification device is connected with the cotton conveying channel; the fiber pretreatment device further comprises a reflow fan; the reflow fan is connected with the wool mixer and the wool bin through pipes; the wool bin is provided with an air blowing device; and the air blowing device is a ventilating pipe which is connected with an air blower. The method for humidifying manually for fiber pretreatment for a long time is changed, the working labor intensity is reduced, the defect of incontinuous production caused by manual humidification is overcome, and the reflow step, namely the secondary humidification step is adopted so that the fiber pretreatment can further meet the yarn spinning requirement and the fiber spinnability is improved.

A surface treatment method for a tantalum spinneret for wet spinning, characterized in that: comprising the following steps: (a) processing a metal tantalum plate into a tantalum spinneret; (a) 1 The tantalum spinneret prepared in step (a) is subjected to nitriding treatment or non-nitriding treatment according to the method of step (b) of the inventor's patent ZL02106915.8, and directly enters the next step (b) of the present invention. (b) The method of making tantalum anode with prior art tantalum electrolytic capacitor generates a layer of suitable amorphous Ta on the tantalum spinneret 2 o 5 (c) polishing: the surface of the tantalum spinneret processed in step (b) is polished to remove the insulating amorphous Ta 2 o 5 Film (d) coating, a layer of amorphous Ta 2 o 5 The tantalum spinneret of the film is coated with a molten salt electrochemical method to form a film layer containing a lithium-containing compound; (e) polishing: the tantalum spinneret processed in step (d) The surface is polished to remove the insulating lithium-containing compound film on the surface of the wire outlet.

The invention provides a preparation method for bis-anhydro sugar alcohol contained copolyester. The method comprises the following steps: (1) aromatic binary acid, fatty dihydric alcohol and reaction assistant are esterified after being fully mixed; and (2) when the esterification is implemented until the esterification rate is high above 90%, bis-anhydrohexitol solution is added, and is condensed and polymerized after being fully mixed and reacted in a reaction system so as to obtain bis-anhydrohexitol contained polyester, wherein the intrinsic viscosity of the bis-anhydrohexitol contained polyester is high above 0.6. The method can obtain high-molecular weight polymer copolyester, can satisfy the spinning requirements to meet the demands of clothes fiber material production, can further satisfy the fiber application requirements in the industrial field, and can synchronously apply and develop the high-performance material aspect in the non-fiber field.

The invention relates to an industrial purification method for fiber-grade methanol proteins and effectively solves the problems of difficult wall breaking of pichia pastoris cells, low breaking rate,easy deactivation and difficult methanol protein purification. The industrial purification method comprises the following steps: performing centrifugal separation on fermentation liquid twice to obtain a heavy phase B; preparing a lysate, adding the lysate in the heavy phase B and adding desalting water to obtain a heavy phase C with a mass concentration of 30 percent; performing high-pressure homogenization to obtain a cell breaking liquid; cooling, regulating a pH value, centrifuging with a centrifugal machine and collecting liquid supernatant to obtain a protein solution; regulating a pH value, performing static precipitation, separating a precipitate with the centrifugal machine and collecting to obtain heavy-phase proteins D; adding desalting water, mixing and centrifuging to obtaineluted re-phase proteins E; regulating pH to obtain a protein alkali solution; drying to obtain the fiber-grade methanol proteins. The industrial purification method provided by the invention has thebenefits that the efficient wall breaking of the pichia pastoris cells as well as the isolation and the purification of the proteins with specific molecular weights are realized, the yield is high, the protein molecular weight distribution is concentrated, the content of crude proteins is above 90 percent, and the requirements for wet spinning of protein fibers can be met.

The invention discloses a water treatment sponge material. Modified polyester undergoes melt-blown spinning and is braided to obtain water treatment sponge, and a modifier is added to regulate the structure of a fiber and improve the strength of the fiber; a cross-linking layer is formed on the surface of the fiber through rapid cross-linking, and nano-particles are introduced to further guarantee the strength of the fiber and improve the adsorption capacity of the water treatment sponge. The above water treatment fiber disclosed in the invention has a large content of oil suction groups, the application range of the water treatment sponge made by using the water treatment fiber can be greatly widened, and the water treatment sponge plays a positive role in the field of organic liquid pollution treatment; and a preparation method of the water treatment sponge material has the advantages of simplicity, easy operation and short preparation time, and the water treatment sponge prepared through the method has the characteristics of excellent adsorption performance, good strength, small density and repeated use, and is suitable for industrial production.

The invention relates to a novel spring cradle. A compression seat is hinged on a cradle seat body, a connecting bolt penetrates through a fixed block in the cradle seat body and is screwed on a nut of the compression seat, the arc surface of the cradle seat body and the arc surface of the compression seat form a supporting rod shaft hole, and a raised V-shaped positioning block is arranged on the arc surface of the compression seat; a locking mechanism comprises a supporting sheet and a locking sheet; a pressing assembly comprises parallel brackets, leather roller seats, springs and pressure adjusting mechanisms; and the leather roller seats are arranged in the parallel brackets and guided by the parallel brackets, a leather roller claw connected with a leather roller shaft is arranged at the bottom of each leather roller seat, indicating plates of the pressure adjusting mechanism are arranged on the parallel brackets, pressure adjusting rods are connected with upper pressure adjusting blocks, the upper pressure adjusting planes of the upper pressure adjusting blocks in work are connected with the lower pressure adjusting planes of lower pressure adjusting blocks, pressure gear indicating marks are arranged on the indicating plates, and the springs arranged in the leather roller seats press against the lower pressure adjusting blocks. The spring cradle is reasonable in structure and simple and convenient in pressure adjusting operation, and leather rollers can keep parallel and have auxiliary pressure adjusting functions.

The invention provides a method for preparing stock solution dyed elastomeric polyester fiber. The method includes: preparing a colorant and an elastomer toughening agent into PET (polyester) masterbatch; then adding the PET masterbatch into a PET spinning stock solution for stock solution dyeing to obtain the dyed elastomeric polyester fiber directly by spinning. In the method, the colorant and the elastomer toughening agent are taken as the masterbatch and added to the spinning stock solution of the polyester fiber, and technical problems existing in dyeing properties and resilience broughtby the fact that traditional fiber needs to be dyed with dyes after forming are solved; the method is simple in operation and favorable for environmental friendliness, and the obtained polyester fiberis high in color fastness, bright in color, soft in handfeel and good in resilience.

The invention discloses a production method of a yakwool and spun silk blended yarn, and belongs to the technical field of spinning. The yakwool and spun silk blended yarn is prepared through the process of wool blending, wool carding, spinning, spooling, doubling and two-for-one twisting. Compared with the prior art, the yakwool and spun silk blended yarn is added in the method, through the highstrength advantage of spun silk, in cooperation of a small ratio of spun silk, the spinning requirements can be met, the style of yakwool is kept to the maximum extent, and meanwhile the specific color, luster and hand feel of spun silk can be embodied, the application range of yakwool fibers is expanded, and the current situation that a yakwool product is monotonous is broken.

The invention discloses an automatic fibre humidifying and pre-processing device and a processing method thereof. The automatic fibre humidifying and pre-processing device comprises a cotton feeding machine (1), a fur machine (2), a fan (3), a cotton conveying channel (4), an automatic humidifying device (5) and a fur cabin (6). The cotton feeding machine (1), the fur machine (2), the fan (3), the cotton conveying channel (4) and the fur cabin (6) are connected through a pipeline in sequence. The automatic humidifying device (5) is connected with the cotton conveying channel (4). The automatic fibre humidifying and pre-processing device further comprises a backflow fan (8). The backflow fan (8) is connected to the fur cabin (6) and the fur machine (2) through a pipeline. According to the automatic fibre humidifying and pre-processing device and the processing method thereof disclosed by the invention, the fibre pre-processing humidification which is artificially carried out for a longtime is changed; the labour operation intensity is reduced; the disadvantage of being incapable of continuously producing while humidifying resulted from artificial humidification is overcome; the backflow step, namely the secondary humidifying step, is increased; therefore, the fibre pre-processing can satisfy spinning requirements better; and the fibre spinnability is increased.

The invention provides a rolling method of a molybdenum plate for spinning a large-length-diameter-ratio molybdenum crucible. The method comprises firstly, a proper mold is selected according to the size of a required molybdenum slab to carry out powder loading, then compression molding is carried out on the mold containing the powder to prepare the slab, then sintering is carried out on the pressed slab, large-deformation rolling is carried out on the sintered slab by using a cross rolling method, so that the binding force between the internal tissues of the slab is improved, isotropic fine fiber tissues can be obtained through cross rolling, moreover, the longitudinal and transverse tissues are in staggered lap joint, so that the tissues are more uniform, the defects which are generateddue to the fact that the stress is not uniform in all directions can be effectively avoided, and favorable conditions are provided for follow-up spinnin. According to the rolling method, the molybdenum raw material slab is processed by adopting the cross rolling method of isostatic cool pressing, sintering and large deformation, so that the spinning requirement of the large-length-diameter-ratio molybdenum crucible is met, and important significance on the production of the large-length-diameter-ratio molybdenum crucible is achieved.

The invention relates to a stock solution for spinning phenolic fibers (PFs). The stock solution comprises the following raw materials: phenol, a 30 to 40 weight percent formaldehyde solution, a 6 to 18 weight percent polyvinyl alcohol (PVA) solution and a catalyst in a mass ratio of 100:(90-200):(40-250):(8-40). The stock solution has the advantages that: spinnability is high, the spinnable viscosity interval is wide, and the intrinsic properties of the PFs are not influenced by an additive.