59 results about "Cotton linters" patented technology

The invention relates to the technical field of short fiber rate detection, in particular to anti-interference cotton short fiber rate detection equipment and a detection method thereof.The anti-interference cotton short fiber rate detection equipment comprises a workbench and sample cotton wool placed on the workbench, and further comprises a material distributing assembly which comprises an upper material distributing plate movably installed above the workbench, and a lower material distributing plate is installed on the workbench in a sliding mode; and the detection assembly comprises a detection frame movably installed above the workbench, a plurality of first electrostatic rods are fixedly installed on the bottom wall of the detection frame, a plurality of second electrostatic rods are slidably installed on the bottom wall of the detection frame, and the first electrostatic rods and the second electrostatic rods are used for sucking the sample cotton velvet on the lower material distribution plate. Scattered single cotton velvets are picked up in an electrostatic adsorption mode, the two electrostatic rods are used for straightening the cotton velvets, unqualified cotton velvets can only be adsorbed by one of the electrostatic rods, then the two electrostatic rods are disconnected to enable the unqualified cotton velvets to lose the adsorption effect and fall into the collecting tank, the cotton velvets are prevented from being pulled broken, and the detection precision is improved.

The invention relates to the technical field of refined cotton processing, in particular to an efficient and optimized refined cotton processing production method which comprises the following production steps: S1, preparing materials: selecting cotton linters as raw materials; s2, cotton opening is conducted, cotton linters are placed on a feeding port of a cotton opener, and equipment is started for cotton opening treatment; s3, preparation of a cooking agent: taking quinone and 2-methylquinone as assistants, putting the assistants into sodium hydroxide, sodium carbonate and amino acid salt, and mixing and stirring to prepare the cooking agent; and S4, cooking treatment: putting the cotton linters into the prepared cooking agent, cooking, and reacting sodium hydroxide with cellulose. By regulating and controlling the biological thallus glycolysis process, directional control over the polymerization degree of the product is achieved, the range of the polymerization degree is narrowed, the fiber reaction uniformity is improved, the fluctuation range of the polymerization degree of products of the same specification is smaller than 80, the impurity removal efficiency is improved, the content of impurities, ash and metal ions is reduced, efficient impurity removal and refining are achieved, and the quality of processed refined cotton is improved.

The application relates to the technical field of fabrics, in particular to a fabric based on protein fiber combined with natural fiber and a preparation method thereof, which is prepared by wet core-sheath composite spinning of a down protein sheath layer and a natural cellulose core layer; the core layer is natural cellulose fiber, and the total mass of the functional fabric is 70-90%; the balance is the sheath layer formed by cross-linking and solidification of a down protein solution; and the sheath layer is loaded with nano titanium dioxide; the introduced natural cellulose core layer is the main skeleton component of the fabric, selects natural fibers such as bamboo pulp cellulose and cotton linter pulp, and provides basic mechanical support for the fabric. The abandoned down resource is used to prepare protein fiber, which is combined with natural cellulose fiber to construct a composite fiber with a functional sheath layer and a mechanical core layer. The technical scheme solves the problems of insufficient sun protection, insufficient antibacterial performance and single mechanical performance of traditional natural fiber fabrics.

The invention belongs to the technical field of refined cotton production processes, and particularly relates to a cooking aid for controlling cotton linter cooking polymerization reduction and a production process. The cooking auxiliary agent is prepared from the following components in percentage by mass: 0.35%-1.1% of magnesium chloride, 61.2%-87.7% of a reducing agent and 11.8%-37.7% of a metal chelating agent, totaling 100%. By means of the synergistic effect of the cooking auxiliaries, disordered degradation of cellulose can be effectively blocked in the cotton linter cooking process, the polymerization degree of alkalized cotton is greatly improved, and the polymerization degree can stably reach 3,250 DP or above; the purpose of removing impurities can be achieved; therefore, a guarantee can be provided for obtaining refined cotton with qualified impurity indexes and higher polymerization degree.

The invention provides a preparation method of a pair of medical absorbent cotton trousers type medical pads, and relates to the technical field of medical absorbent cotton. The preparation method provided by the invention comprises the following steps: carding cotton fibers subjected to impurity removal to prepare cotton linters; degreasing the cotton linters in alkali liquor, and bleaching to obtain degreased cotton; performing surface activation treatment on the degreasing cotton to obtain active cotton; immersing active cotton in a polyphenol solution for adsorption to prepare primary modified cotton; soaking the primary modified cotton in a silver ion solution, separating and drying to obtain modified absorbent cotton; and cutting and shaping the modified absorbent cotton to obtain the medical absorbent cotton pants-type medical pad. According to the medical pad, the degreasing cotton can be subjected to surface modification treatment, so that the performance stability can be improved, and the performance consistency of the medical pad in the using and pressing processes can be improved.

Dissolving pulp comprising pre-consumer textile waste is used to produce cellulose esters and corresponding fibers. According to the process, the cellulose content in waste materials generated during textile manufacturing is utilized, and the waste materials comprise cotton linters, bottom combing materials, fabric scraps, cattle feed waste materials, combing machine protruding materials, broken-end cotton suction device waste materials, soft regenerated wool waste materials, yarn waste materials, production waste materials, cutting machine scraps, twisting waste materials or mixtures of the cotton linters, the bottom combing materials, the fabric scraps, the cattle feed waste materials, the combing machine protruding materials, the broken-end cotton suction device waste materials and the soft regenerated wool waste materials.

The invention discloses a chitin / cotton linter pulp fiber composite antibacterial film and a preparation method thereof. The preparation method comprises the following steps: extraction of chitin, dissolution of chitin, dissolution of cotton linter pulp cellulose, preparation of a blended solution, film formation and post-treatment. The extraction of the chitin comprises the following steps: sequentially carrying out deproteinization, desalination, decoloration and crushing on shrimp shell powder to obtain powdery chitin; the dissolution of the chitin comprises the step of dissolving the extracted chitin in an aqueous solution containing 15-25wt% of potassium hydroxide and 3-6wt% of urea to obtain a chitin solution. According to the composite antibacterial film, cotton linter pulp cellulose is used as a substrate, chitin extracted from shrimp shells through a system process is used as an auxiliary material, potassium hydroxide / urea is used for dissolving the chitin, and the composite film with good transparency, swelling degree, film forming uniformity and antibacterial performance is prepared.

The invention discloses a textile fabric with regenerated cellulose fibers, and belongs to the technical field of textile industry. Comprising the following components: regenerated cellulose fiber, polyester, fenamidone, deltamethrin, sodium lauryl carboxymethyl imidazoline acetate, a coupling agent I, polypropylene fiber, yttrium oxide, zirconium dioxide, titanium dioxide and a coupling agent II. The regenerated cellulose fibers are fibers prepared from natural cellulose such as wood, cotton linters and bamboos through chemical dissolution and spinning processes, the regenerated cellulose fibers are natural, degradable and more meet the green and environment-friendly requirements, polyester is mixed with fenamidone, deltamethrin and sodium lauryl carboxymethyl imidazoline acetate, and the regenerated cellulose fibers are prepared into the regenerated cellulose fibers. According to the anti-mite textile fabric, the anti-mite components in the polyester are added, so that a layer of anti-mite agent on the surface is washed off and a new anti-mite agent is dissolved out from the inner part to be supplemented in the process of wearing and washing the textile, and a new anti-mite layer is formed on the surface of the textile fabric to play an anti-mite role, so that the textile fabric has a lasting anti-mite effect.

The invention relates to a visual colorimetric sensor, a preparation method thereof and application of the visual colorimetric sensor in fluorine ion detection. According to the sensor, a cellulose membrane serves as a substrate, zirconium salt is loaded and reacts with alizarin sulfonate, and the alizarin zirconium sulfonate loaded cellulose membrane sensor is obtained. The preparation method comprises the following steps: firstly, taking sodium hydroxide, urea and cotton linter as raw materials, mixing, defoaming, forming a film, curing and the like to obtain a cellulose base film; then mixing and adsorbing a zirconium salt solution and the cellulose-based membrane, so that zirconium is loaded on the cellulose-based membrane; finally, mixing and reacting an alizarin sulfonate solution with the zirconium-loaded cellulose membrane under an acidic condition to obtain the zirconium alizarin sulfonate-loaded cellulose membrane sensor. When fluorine ions exist, the color of the sensor is quickly changed from wine red to colorless, so that visual qualitative and semi-quantitative detection is realized, the sensor has the advantages of high selectivity, quick response, low detection limit and the like, and a portable and efficient solution is provided for fluorine ion pollution monitoring.

The invention particularly relates to a dissolving pulp production process which comprises the following steps: washing and soaking wood chips or cotton linters, and naturally draining to obtain a pretreated raw material; adding adjusting water into the pretreated raw material, then adding sodium sulfite, mixing and stirring, heating and preserving heat, and extracting pre-hydrolysis waste liquid to obtain semi-slurry; the ratio of the absolute dry mass of the pretreated raw materials to the volume of the adjusting water is 1: (5-8); in terms of SO2, the use amount of sodium sulfite is 2%-4% of the absolute dry mass of the pretreated raw material; the heating and heat preservation temperature ranges from 150 DEG C to 160 DEG C, and the heat preservation time ranges from 90 min to 120 min; carrying out sulfate cooking on the semi-slurry to prepare coarse slurry and cooking black liquor; the coarse pulp is bleached, pulped and sieved by adopting an OD0EOPD1 section sequence, and the dissolving pulp is prepared. According to the method, the quality of the dissolving pulp is remarkably improved by adopting sodium sulfite to prehydrolyze the dissolving pulp, the high-end application requirements of cellulose acetate, Lyocell fibers and the like can be met, the vacuum pulp washing link of semi-pulp after prehydrolysis is omitted, the pulp wastage rate is reduced, the MVR evaporator utilizes secondary steam compression reuse, and the water resource utilization rate is improved.

The invention provides a method for preparing a biodegradable plastic, which utilizes the degradability of a mixed plastic matrix and the biodegradability of fillers such as cotton linters and modified flax fibers, so that the plastic as a whole has biodegradability; at the same time, the cotton linters, modified flax fibers and montmorillonite powder enhance the mechanical properties of the mixed plastic matrix; the degradation aids include cephalosporin, starch and wood ash, which help to improve the interface bonding between the filler and the matrix during the plastic molding process, thereby improving the stability of the biodegradable plastic of the invention; when the plastic is buried, the degradation aids are first pyrolyzed in the environment to increase the organic nitrogen content of the soil, thereby providing a good environment for bacteria, thereby accelerating the biodegradation of the plastic.

The utility model discloses production and processing equipment for ultrahigh-viscosity food-grade cotton linters, and relates to the technical field of production and processing of food-grade cotton linters, the production and processing equipment comprises a processing table, the front side and the rear side of the top surface of the processing table are jointly and fixedly connected with a U-shaped frame, and an electric sliding rail is arranged on the inner wall of the U-shaped frame; an electric telescopic rod is fixedly connected to the bottom face of the electric sliding rail, a moving plate is fixedly connected to the output end of the electric telescopic rod, a blade is fixedly connected to the center of the bottom face of the moving plate, and two vertical rods are fixedly connected to the positions, located on the left side and the right side of the U-shaped frame, of the top face of the machining table; and circular grooves are slidably connected to the surfaces of the four vertical rods. According to the cotton linter cutting device, when cotton linters are processed and cut, supporting and fixing of workers are reduced, the flatness of the cotton linters in the processing process is guaranteed, and therefore the processing quality of the cotton linters is improved, meanwhile, the cutting efficiency of the cotton linters is improved, chippings of the cotton linters can be conveniently collected, and waste in the cotton linter processing process is reduced.

The utility model relates to the technical field of cotton-padded clothes separate test rolling mills, in particular to a fully-adaptive sawtooth cotton-padded clothes separate test rolling mill which comprises a shell, four supporting legs are fixedly connected to one side of the shell, a motor is fixedly connected to one side of the shell, a first through hole is formed in one side of the shell, a roller is rotationally connected to one side of the shell, and a second through hole is formed in the other side of the shell. And one side of the roller is fixedly connected with a first gear disc, one side of the shell is fixedly connected with a supporting plate, and one side of the supporting plate is rotationally connected with a rotating shaft. The utility model has the advantages that: one side of the roller is fixedly connected with the first gear disc, one side of the rotating shaft is fixedly connected with the second gear disc, and the power of the motor is transmitted to the rotating shaft through the mutual meshing of the first gear disc and the second gear disc; and a second sawtooth disc is fixedly connected to one side of the roller, and a first sawtooth disc is fixedly connected to one side of the rotating shaft, so that ginned cotton is stirred open.

The application discloses a method for improving the drainage of cotton stalk chemi-mechanical pulp, and belongs to the field of pulping and papermaking. The method comprises the following steps: after the cotton stalk is crushed, washed and steamed, a first chemical impregnation agent is added, and then mechanical disintegration is performed to obtain cotton stalk material; pectinase is used to perform enzyme pretreatment on the cotton stalk material to obtain pretreated material; a second chemical impregnation agent is added to the pretreated material, mechanical disintegration is performed, and then refining disintegration is performed to obtain refined material; after the refined material is washed, enzyme treatment is performed on the refined material by using pectinase to obtain cotton stalk chemi-mechanical pulp with obviously improved drainage. By selecting pectinase as a biological enzyme and designing a two-stage treatment process of pectinase, pectin substances in cotton stalk raw materials can be effectively removed, pectin is degraded into small molecular substances such as galacturonic acid, the drainage of cotton stalk chemi-mechanical pulp is improved, and the influence of pectin on the papermaking process is eliminated.

The utility model discloses refined cotton alkali leaching treatment equipment which comprises an alkali leaching structure, a stirring structure is arranged over the alkali leaching structure, and the stirring structure is adjusted in a lifting mode through a lifting adjusting structure over the stirring structure. The lifting adjusting structure comprises a winch, the winch is driven by a second motor, and a steel wire rope is wound on the winch. According to the refined cotton alkali leaching treatment equipment, the winch is arranged, the lifting adjusting effect can be achieved through the winch, manpower consumption can be greatly reduced, the stirring rod is arranged, and therefore the problem that in the alkali leaching process of existing refined alkali leaching treatment equipment, alkali liquor can only be directly sprayed to the surfaces of cotton linters, and the alkali leaching efficiency is greatly improved is solved through the stirring rod. The device solves the problems that the defects exist when alkali leaching is carried out through the operation mode, the alkali leaching effect is improved, the impeller is arranged, kinetic energy of water flow can be converted into mechanical energy through the impeller, the second motor is arranged, and therefore the effect of driving the whole stirring structure to rotate is achieved through the second motor.

The application relates to the technical field of fumigation and moxibustion materials, and discloses a composite fumigation and moxibustion cigarette containing bai-muxiang leaves and a preparation method thereof. The preparation method specifically comprises the following steps: crushing and screening the mugwort straw, soaking the mugwort straw in a sodium hydroxide solution, stirring after adding polyethylene glycol, cooling to-20 to-35 DEG C, keeping the temperature for 10-30 min, heating to 30-50 DEG C, keeping the temperature for 10-30 min, cooling to-30 to-40 DEG C again, keeping the temperature for 1-2 h, replacing, uniformly stirring after adding bai-muxiang leaves, drying, cutting into filaments to obtain pretreated filaments; drying the cotton linters, heating to 400-500 DEG C under nitrogen protection, calcining for 10-20 min, continuously heating to 700-750 DEG C, calcining for 5-15 min, cooling to room temperature with the furnace, crushing, uniformly mixing with the pretreated filaments, spraying tobacco leaf water extract on the surface of the mixture, air-drying after mixing, spraying a water composite extract of Hippophae rhamnoides L. again, and air-drying after mixing.

The utility model discloses equipment for preparing refined cotton by bleaching cotton linters, which comprises a bleaching pool, a placing mechanism is arranged at the top of the bleaching pool, the placing mechanism comprises a stirring assembly and a placing assembly, the placing assembly comprises a placing cage, a cage cover for sealing the placing cage is arranged at the top end of the placing cage, and the stirring assembly is arranged on the stirring assembly. The stirring assembly comprises a stirring rod, a driving part used for driving the stirring rod to rotate is arranged on one side of the stirring rod, and the stirring rod is arranged at the bottom end of the cage cover; by utilizing the design of the lifting plate, the lifting device, the moving device, the connecting piece and the placing mechanism, when the lifting plate is driven by the moving device to do horizontal reciprocating motion, the placing cage can be driven to perform bleaching at the top of the bleaching pool, and meanwhile, a rotating motor drives a stirring rod to rotate through a rotating rod; and the stirring device is used for stirring the cotton linters stored in the placement cage, so that the clots of the cotton linters are scattered, and the cotton linters are better bleached.

The invention relates to the technical field of fabrics, in particular to a fabric based on combination of protein fibers and natural fibers and a preparation method thereof.The fabric is prepared from a down feather protein sheath layer and a natural cellulose core layer through wet-process core-sheath composite spinning, the core layer is made of natural cellulose fibers and accounts for 70-90% of the total mass of the functional fabric, and the natural cellulose fibers account for 20-30% of the total mass of the functional fabric. The sheath layer is formed by cross-linking and curing a down feather protein solution; nano titanium dioxide is loaded in the sheath layer; the natural cellulose core layer introduced by the invention is used as a main skeleton component of the fabric, and natural fibers such as bamboo pulp cellulose, cotton linter pulp and the like are selected, so that basic mechanical support is provided for the fabric. According to the invention, the protein fiber is prepared by recycling the waste down, and the protein fiber is compounded with the natural cellulose fiber to construct the composite fiber combining the functional sheath layer and the mechanical core layer. According to the technical scheme, the problems that a traditional natural fiber fabric is insufficient in sunscreen and antibacterial performance and single in mechanical property are solved.

The invention provides a cotton linter pulp bleaching agent, a preparation method and a bleaching method. The cotton linter pulp bleaching agent comprises a hydrogen bond acceptor and a hydrogen bond donor, the hydrogen bond acceptor is squaramide, and the hydrogen bond donor is a carboxyl-containing organic matter. The cotton linter pulp bleaching agent provided by the invention is good in stability and good in bleaching effect, and does not excessively consume water resources.

The invention relates to a production method of refined cotton linters, which comprises the following steps: S1, raw material pretreatment: removing metal, gravel and cottonseed hull impurities from a cotton linter raw material through an opener and an impurity remover, and opening the cotton linter raw material into flocculent fragments to improve the subsequent reaction uniformity; s2, alkali spraying and presoaking: spraying the cotton linters by using a sodium hydroxide solution, removing excessive alkali liquor in combination with spiral extrusion, and preliminarily destroying lignin and hemicellulose structures; s3, alkaline cooking: performing alkaline cooking on the cotton linter raw material by adopting a segmented cooking mode; and S4, bleaching and acid treatment: taking out the cotton linter raw material cooked in the S3 from the cooking pot, and removing the alkali liquor by utilizing spiral extrusion. According to the method disclosed by the invention, a sectional temperature control technology is adopted during alkaline cooking, cellulose degradation is reduced by sectional temperature rise, the polymerization degree stability is improved, the viscosity of an ultra-high-viscosity product is greater than or equal to 800mPa. S, alkali liquor is optimized, a NaOH and Na2SO3 composite system is adopted, the dosage of NaOH is reduced by 20-30%, the cost is reduced, and the wastewater treatment pressure is relieved.

The present application relates to a kind of membrane separation treatment methods of papermaking and cotton linter processing black liquor, comprising the following steps: 1) papermaking black liquor or cotton linter processing black liquor is coarsely filtered, and refined black liquor is obtained;2) refined black liquor is concentrated by multiple reverse osmosis through nanofiltration membrane, and concentrated dealkalization black liquor and permeate are obtained, part of permeate is used as circulating washing liquid, and the rest of permeate is used as recovered pure alkali liquor.When the total flow of permeate is not less than 90% of initial flow during reverse osmosis concentration, maintain high pressure condition to concentrate refined black liquor, when the total flow of permeate is less than 90% of initial flow, use circulating washing liquid to wash nanofiltration membrane under low pressure condition, until the total flow of permeate recovers to more than 90% of initial flow, then restore to high pressure condition to concentrate refined black liquor.This method can prolong the operation cycle of membrane treatment black liquor, prolong the service life of membrane, reduce the operation cost, and is beneficial to the industrialization popularization of membrane method treatment black liquor.

The present application belongs to the field of microcrystalline cellulose preparation, and provides a method for preparing microcrystalline cellulose from linter fibers. The method comprises the following steps: (1) dispersing and defibrating high-purity cellulose of linter to screen out linter fibers of 50-100 mesh; (2) drying the linter fibers obtained in step (1) and balancing the moisture; (3) acidolysis of the linter fibers obtained in step (2); (4) filtering the reaction product with a sand core funnel, washing clean. Collecting the solid, and freeze-drying for 48 h, then obtaining the microcrystalline cellulose. The raw material is screened, and the linter fibers are subjected to acid hydrolysis, which improves the selectivity of acid hydrolysis, and directionally prepares the microcrystalline cellulose with a particle size distribution range of 80-120 um and 120-180 um, which provides a theoretical basis for the directional preparation and control of microcrystalline cellulose, and has important guiding significance for the actual production of microcrystalline cellulose.

The utility model discloses a cotton linter compacting mechanism which comprises a machining table, stroke grooves which are symmetrically distributed are formed in the surfaces of the two sides of the machining table, a servo motor is fixedly installed on the front face of the machining table, a reciprocating lead screw is fixedly installed on an output shaft of the servo motor through a coupler, and one end of the reciprocating lead screw penetrates and extends into the machining table. The outer surface of one end of the reciprocating screw rod is installed on the rear inner wall of the processing table through a bearing, the outer surface of the reciprocating screw rod is in threaded connection with a threaded block, and the surfaces of the two sides of the threaded block are fixedly connected with moving blocks which are symmetrically distributed. Compared with the prior art, the cotton compacting device has the advantages that manual labor is reduced, production efficiency is improved, the cotton compacting device is suitable for batch production, and the effect that the cotton rolling compacting strength is adjusted by adjusting the pressure of the compression roller, so that the cotton compacting quality is improved is achieved.

The invention relates to the technical field of cotton pulp board preparation in the papermaking industry, in particular to a low-temperature short-process paper money paper cotton pulp board cooking process which comprises a cotton linter raw material, a composite alkaline cooking agent and a multifunctional additive. The cotton linters are first-level cotton linters or third-level cotton linters, the composite alkaline cooking agent is formed by compounding sodium hydroxide and potassium hydroxide, the molar ratio of sodium hydroxide to potassium hydroxide is 2.5-6.5: 1, and the multifunctional additive is composed of a penetrant, a chelating agent and a stabilizer according to the mass ratio of 3-8: 1-3: 0.5-2. According to the low-temperature short-process paper cotton pulp board cooking process provided by the invention, by constructing a multi-in-one collaborative system, the technical bottleneck of mutual restriction of low temperature and short process, impurity removal efficiency and fiber protection, and product performance and stability in the prior art is broken through, and multi-dimensional technical improvement is realized.

The utility model provides a wastewater treatment device for pulping high-viscosity cotton linters, which relates to the technical field of wastewater treatment devices and comprises a shell, a liquid collecting tank is mounted at the bottom end of the shell, a liquid outlet is mounted at the bottom end of the liquid collecting tank, a filter box is arranged in the shell, a fixing plate is mounted on the surface of the filter box, and a water outlet is formed in the bottom end of the fixing plate. A pull block is installed on the surface of the fixing plate, a side plate is installed on the side face of the fixing plate, a fixing block is installed on the right side of the side plate, a threaded rod is arranged in the fixing block, and a rotating handle is installed on the right side of the threaded rod. The wastewater treatment efficiency and the filtering precision are improved. Due to the sliding connection design between the fixing plate and the shell, the position of the filter box can be adjusted according to needs, and the filter material is convenient to maintain and replace. In addition, the threaded rod is used in cooperation with the rotating handle, the operation process is simplified, and the labor intensity is reduced. And the whole structure is compact, the occupied area is small, and the device is suitable for space-limited working environments.

The invention discloses a method for measuring the length of cotton linter fibers, which comprises the following steps of: soaking with anhydrous alcohol and a sodium hydroxide solution, dyeing with Congo red for pretreatment, diluting with distilled water, arranging a sample on a glass slide coated with glycerol for sample preparation, imaging through a microscope, automatically tracking and calculating through a computer, and counting the number of fibers at each length level. According to the method, the defects that a traditional hand pulling method is inaccurate in measurement and the length of fibers with the length of 8 mm or below is difficult to measure can be overcome, meanwhile, the method has good substitutability for the traditional hand pulling method and a roller method, and the method is suitable for short-fiber cotton linter products with large fiber length distribution.

The application discloses a kind of multi-arm cotton picking robot based on vision, it is related to cotton picking machine technical field, including chassis, cotton picking device, mechanical arm and cotton collecting box, the chassis is divided into three layers, the first layer is the growth area of cotton plant to be picked, the cotton picking device and four mechanical arms are fixedly connected with the second layer of chassis, and the inside of the mechanical arm is provided with the passage that can supply cotton conveying, the cotton collecting box is fixedly connected with the third layer of chassis;The end of the mechanical arm is moved to the vicinity of the cotton to be picked in the application, under the action of the suction of cotton picking device, cotton is brought into cotton collecting box;The application overcomes the phenomenon that cotton linter fiber is pulled off, pulled thin, causes around knot, etc., caused by traditional picking spindle type cotton picker, by pneumatic picking and conveying, the quality of long lint cotton is greatly improved, and the problem of slow artificial harvesting speed and high labor intensity is also solved.

The invention belongs to the technical field of fiber preparation, and provides a high-strength and high-toughness self-twisting regenerated cellulose fiber and a preparation method and application thereof. The preparation method of the high-strength and high-toughness self-twisting regenerated cellulose fiber comprises the following steps: 1) mixing a mixed solution with cotton linter to obtain a cellulose solution; 2) centrifuging the cellulose solution to obtain supernate, and cross-linking the supernate with a cross-linking agent at low temperature to obtain a spinning stock solution; 3) spinning the spinning solution and the mixed solution to obtain the high-strength and high-toughness self-twisting regenerated cellulose fiber, the mixed solution is a mixed solution of alkali, urea and water. According to the method, the flowing and solidification process of the cellulose solution is accurately controlled by utilizing a microfluidic technology, continuous and uniform preparation of the high-strength and high-toughness cellulose fiber is realized, and the structural uniformity and molecular chain ordered arrangement degree of the fiber are remarkably improved, so that the mechanical property of the fiber is effectively enhanced.

The invention discloses a production method of special refined cotton with high uniform polymerization degree. The production method comprises the following steps: S1, material selection and preparation: selecting cotton linters with the fiber length of 10-12mm and the maturity of over 80% as a refined cotton raw material; s2, cotton opening and impurity separation, wherein the cotton linters are put into an opener to be opened, then the cotton linters are put into an impurity removing machine, and sand, stone, cotton hulls, hair and other foreign impurities mixed into the cotton linters are separated from the cotton linters; s3, preparing a cooking liquor: mixing a sodium hydroxide solution, copper sulfate, a cyclic ketone compound, a stabilizer, sulfur trioxide and hydrogen peroxide according to a certain ratio to obtain the cooking liquor; and S4, dipping: putting the cotton linters into the cooking liquor for dipping. The bleaching device has the beneficial effects that the bleaching liquid is added into the bleaching pool for three times, and the temperature of the bleaching pool is quickly adjusted to the set temperature after the bleaching liquid is added each time, so that the temperature of the bleaching pool can be ensured not to change greatly, and the problem that the bleaching effect is influenced due to the fact that the temperature change is large can be avoided.

The invention provides a flexible environment-friendly heat-conducting composite film and a preparation method thereof. The preparation method comprises the following steps: (1) adding cotton linters into a urine alkali system, and dissolving to obtain a cellulose solution; (2) adding MXene nanosheets and epichlorohydrin into the cellulose solution, stirring, centrifugally defoaming, putting into a mold, and standing to obtain MXene / cellulose hydrogel; and (3) sequentially stretching, fixing, hot-pressing and vulcanizing the MXene / cellulose hydrogel to obtain the flexible environment-friendly heat-conducting composite film. Through the synergistic effect of five steps of low-temperature urea alkali dissolution, EPI crosslinking, stretching, dilute sulphuric acid fixation and hot-pressing vulcanization, high in-plane orientation of MXene nanosheets in a cellulose network is achieved, the in-plane heat conductivity coefficient is increased, meanwhile, the flexibility is improved through an epichlorohydrin crosslinking network, an orientation structure is locked through dilute sulphuric acid, the porosity is reduced to 0.5% or below through hot pressing, and the heat conductivity coefficient of the MXene nanosheets is increased. And the in-plane heat conductivity coefficient and the flexibility of the conductive composite film are synchronously improved.