46results about "De-gumming silk" patented technology

The invention relates to the technical field of k'o-ssu technology and ink art, and discloses a color matching silk twisting method which comprises the following steps: S1, selecting silk threads for traditional k'o-ssu as ground color wefts and ink color wefts; s2, respectively splitting the ground color wefts and the ink color wefts into 12-20 monofilaments, and adjusting the thickness difference of each monofilament through a manual filament splitting method to form a filament diameter gradual change effect; and S3, according to the writing and ink layers of the freehand wash and ink painting, the ground color silk threads and the ink color silk threads are twisted according to a seven-two-three matching method. According to the color matching silk twisting method and the weaving method of the freehand wash and ink painting, natural white raw silk and indigo dyed raw silk are twisted according to different proportions of coke ink, dense ink and light ink through a seven-two-three matching method, and a technology of twisting three yarns and loosening one yarns is combined, so that wefts are gradually changed in layers due to different proportions of ink silk yarns and different twisting modes; the intermittent linear structure formed by loose twisting simulates the dry pen texture of the ink painting, and the problems that the ink color layer is fuzzy and the dry pen texture is deficient are solved.

The invention discloses a production method of mask base cloth. Spun silk fibers subjected to degumming treatment are made into a spun silk net directly suitable for curing processing through an integrated net forming system comprising a continuous drying device, a free opening device and a carding net forming device. A vibration loosening device, a free loosening device and an overturning loosening device are sequentially arranged in a drying box comprising a heating device, so that full and uniform drying is synchronously realized in flexible loosening of degummed spun silk fibers, and high-quality principle preparation is provided for processing of mask base cloth; full-automatic drying of the spun silk fibers without manual operation is achieved, and then the drying efficiency of the spun silk fibers is remarkably improved; direct web forming of the dried spun silk fibers is achieved through a cotton spinning axial flow cotton slitter and a cylinder cover plate carding machine with a slivering device and a cotton box, and then efficient production of the high-quality pure spun silk mask base cloth is achieved, wherein the cotton spinning axial flow cotton slitter and the cylinder cover plate carding machine are sequentially connected with the drying device, and the slivering device is removed.

The invention discloses a high-quality mulberry silk quilt based on ecological breeding and a preparation method of the high-quality mulberry silk quilt. The preparation method comprises the following steps: step 1, ecological breeding of breeding silkworms; step 2, ecological pretreatment of silkworm cocoons; step 3, cocoon shell treatment; step 4, preparing silk floss; step 5, airing the silk floss; step 6, preparing a mulberry silk quilt; according to the method, high-quality mulberry leaves are provided for feeding, fine breeding and strict sanitary management and control of the breeding process are implemented by controlling the environmental parameters of silkworm growth, high-quality mulberry silk with long, thin and uniform fibers is produced, and the problems that lumps of pupa cotton are rough, doupion silk is poor in fitness, tussah silk is thick and hard and prone to static electricity, and chemical bleaching residues exist are solved; after the silkworm chrysalis ecloses and spawns, natural silkworm chrysalis-removed cocoon shells are taken for processing, life continuation and cocoon silk quality of the silkworm chrysalis are considered, and the prepared silk quilt has good fitness, heat retention property, air permeability, antistatic property, durability and fiber quality and meets the requirements of consumers for high-quality, healthy and ecological home textile products.

A method for degumming raw silk, relating to the field of silk processing technology, includes soaking the raw silk bundle, a first degumming treatment, a second degumming treatment, a softening treatment, and drying the finished product. This invention is highly practical and very convenient to use. By setting up a box, it facilitates the degumming treatment of the raw silk bundle, improving degumming efficiency and the quality of the degummed silk. The box also softens the silk, improving its smoothness and facilitating subsequent processing. Furthermore, by setting up a wastewater tank, it treats the wastewater after degumming, reducing nutrient-rich components and minimizing environmental pollution.

Methods are developed and provided for producing silk pieces with high silk recovery efficiency without causing mechanical damage to the cocoon silk of bagworm larvae on the substrate. Bagworm larvae are disposed together with a solvent-soluble substrate, and after the bagworm larvae are caused to spin cocoon silk on the surface of the substrate, the substrate is dissolved with a solvent, and the cocoon silk is separated.

The invention discloses a machine washable knitted fabric processing technology based on silk multi-component blending, which comprises the steps of silk fiber pretreatment, spinning, weaving and after-treatment, the after-treatment comprises the steps of pre-shaping, scouring and bleaching, dyeing, cold water washing, hot water washing, acid neutralization, soaping, hot water washing, cold water washing, color fixation, softening treatment, cylinder discharge, drying and shaping. Through multi-component blending and process chain integrated optimization, the machine washing tolerance and the size stability of the knitted fabric are synergistically improved, the practicability and durability of the knitted fabric are improved, and the application range of the knitted fabric is widened. The color fastness to rubbing of the finished fabric processed by the method reaches grade 4-5, the washing size change rate is less than or equal to 1.3% (in the warp direction) and less than or equal to 0.5% (in the weft direction), the bursting strength is greater than or equal to 463N, the appearance of the finished fabric is judged to still reach grade 3-4 after 10 times of 5A standard washing, and the finished fabric has excellent anti-pilling property (grade 3-4) and anti-wrinkle resilience (grade 4) and meets the first-grade product requirement of the FZ / T 43015-2021 standard.

The invention relates to a mulberry silk cleaning and degumming method and device based on cooperation of a three-dimensional fluidized bed and multiple physical fields, and the mulberry silk is subjected to efficient degumming treatment by adopting the three-dimensional fluidized bed and placing a charge conduction medium and an electrolytic working solution through the links of pretreatment, intermediate treatment, fine degumming and the like. According to the method, the degumming rate is 92-96%, the total treatment time is shorter than or equal to 180 minutes, the working solution recycling rate is larger than or equal to 80%, the energy consumption is reduced by 40-50%, the fiber strength loss is smaller than or equal to 5%, and the conductive needle plate scheme is smaller than or equal to 3%; raw materials such as cocoon husks and silk floss can be adapted through parameter switching, and the daily productivity of a single production line can reach hundreds of kilograms.

The invention relates to the technical field of silk degumming, and discloses efficient silk fiber degumming treatment equipment which comprises a reaction kettle, a silk adding end and an enzyme preparation adding end are fixedly arranged on the outer wall of the reaction kettle, a driver is fixedly connected to the center of the upper surface of the reaction kettle, and a connecting cylinder is fixedly arranged at the driving end of the driver; the inner wall of the lower connecting seat is in sliding connection with the outer wall of the connecting cylinder, each rotating blade is formed by rotationally connecting two blades through a shaft, and a protection assembly is arranged in the reaction kettle and used for separating a blade body from silk. The blade main body and silk are separated through the protection assembly, winding caused by direct contact of the silk and the blade main body is avoided, so that influence on stirring work is avoided, and the silk rotates under the action of centrifugal force and is kept at the edge of the inner wall of the reaction kettle; therefore, the rotating blades are prevented from being wound with the silk when the rotating blades extend out of the center of the reaction kettle subsequently.

The application relates to the technical field of biological silk production, and specifically discloses a cocoon low-temperature thread-removing pretreatment process, which comprises the following steps: preparing a nanocomposite with a core-shell structure; dispersing the nanocomposite in water to obtain a pretreatment liquid; immersing cocoon in the pretreatment liquid to remove the nanocomposite floating on the surface and form cocoon objects; irradiating the cocoon objects with near-infrared light to make the temperature-sensitive phase change material layer melt and release low-temperature active protease, and obtain pretreated cocoon; and putting the pretreated cocoon into clean water with a temperature of 38-42 DEG C to remove the thread. The nanocomposite with the core-shell structure is loaded into the cocoon through negative pressure penetration and is differentially distributed by using the structural differences of different parts of the cocoon layer. After being heated to the melting point of the temperature-sensitive phase change material layer, the protease is triggered to be released in situ in the cocoon layer, and the effect that the treatment strength and the adhesion strength of the cocoon layer are automatically matched is achieved.

The invention relates to the technical field of silk fiber materials, and discloses a silk fiber material and a preparation method and application thereof.The preparation method comprises the steps that degummed fibroin fiber serves as a matrix, and the degummed fibroin fiber is mildly modified through genipin-mediated chemical crosslinking or riboflavin-mediated photo-crosslinking or the combination of genipin-mediated chemical crosslinking and riboflavin-mediated photo-crosslinking; the modified degummed fibroin fiber shows excellent cell adhesion and proliferation performance, the biocompatibility is remarkably improved, meanwhile, the excellent mechanical property of natural silk is reserved, and the degummed fibroin fiber is suitable for various biomedical application scene requirements; and the modified degummed fibroin fiber also has fluorescence luminescence characteristics obviously different from those before modification, and is beneficial to visual positioning and monitoring in specific application scenes. The method can be compatible with an existing textile process, and has popularization and application values.

The utility model discloses silk and silkworm cocoon integrated degumming equipment which comprises a control box, a groove is formed in the upper end of the control box, two supporting blocks are fixedly connected to the inner bottom of the groove, the upper ends of the two supporting blocks are jointly and fixedly connected with a pot body, a pot body is arranged in the pot body and is in a net shape, and the pot body is fixedly connected with the pot body. A pneumatic rod is installed at the upper end of the control box, the telescopic end of the pneumatic rod is fixedly connected with a connecting rod, the lower end of the connecting rod is fixedly connected with a fixing frame, the lower end of the fixing frame is fixedly connected with an upper cover, an electric heating plate is embedded in the inner wall of the pot body, and the lower end of the pot body communicates with a discharging opening. According to the equipment, the operation steps of personnel can be reduced, so that the situation that the personnel are injured due to steam or boiling water in the degumming process can be avoided, silkworm cocoons can be effectively dried, meanwhile, the silkworm cocoons can be degummed and dried continuously, and material transfer in the process is reduced.

The invention belongs to the technical field of silk fibroin fiber membranes, and particularly relates to an ultrathin high-toughness ionic conductive silk fibroin fiber membrane as well as a preparation method and application thereof. According to the invention, lithium chloride is introduced into the fiber membrane, so that the fiber membrane is endowed with good ionic conductivity, and the tensile property of the material is further improved by a plasticizing effect generated by moisture absorption, so that the fiber membrane can detect large-range strain. The characteristics are combined with biocompatibility, so that the composite material has remarkable advantages in the fields of wearable strain sensors and stretchable electrodes, and meanwhile, the problems that a traditional polymer base material is poor in air permeability and non-degradable are solved.

Disclosed are a molded body and a method for manufacturing the same, in which the molded body comprises silk fibroin having high impact strength and flexural performance, the molded body is capable of maintaining the impact strength and flexural performance over a long period of time, the molded body comprises 80 parts by weight or more of silk fibroin, and the molded body is a molded body which is capable of maintaining the impact strength and flexural performance over a long period of time. The silk fibroin comprises fibrous silk fibroin and non-fibrous silk fibroin.

The invention relates to the technical field of blended yarns, and particularly discloses a preparation process and application of tussah silk blended napping yarn, the preparation process comprises the following steps: degumming pretreatment is performed on tussah silk, 50-65 parts by mass of pretreated tussah silk, 18-30 parts by mass of cotton fiber and 10-25 parts by mass of modified polyester fiber are weighed for blending, and the tussah silk blended napping yarn is obtained; the tussah silk blended napped yarn is prepared through opening picking, cotton carding, drawing, roving and spinning processes, napping and dipping treatment are conducted on the blended yarn, durable crosslinking is formed among fibers through high-temperature baking, and the prepared tussah silk blended napped yarn has high cohesive force, excellent softness, air permeability and mechanical strength. The fabric is widely applied to high-end knitted fabrics and household textiles.

The invention discloses an efficient separation method of silk sericin and fibroin, which comprises the following steps: (1) immersing original silk into a water-glycerol mixed solution, and then taking out to obtain pretreated original silk; and (2) carrying out alternating temperature and humidity field-low frequency vibration coupling treatment on the pretreated original silk to complete separation of sericin and fibroin. In the prior art, sericin and fibroin separation can be effectively realized only through a certain corrosive chemical reagent or enzyme or combination of boiling water temperature and high pressure, the method takes the physical property difference (hydrophilicity and glass transition temperature) of sericin and fibroin as a core, the effect of a combination interface of the sericin and fibroin is regulated and controlled through a mild physical field, and the separation efficiency of sericin and fibroin is improved. Moreover, no chemical reagent is involved in the whole process, and the fibroin structure is not damaged.

The invention provides cocoon cooking liquid of amber silkworm cocoons and a silk reeling method of the amber silkworm cocoons, and belongs to the technical field of silk making in the sericulture industry. The invention relates to a cocoon cooking liquid for amber silkworm cocoons. The cocoon cooking liquid is an aqueous solution containing 0.1%-0.3% by mass of potassium carbonate and 0.1%-0.3% by mass of ethylenediamine tetraacetic acid. Compared with a traditional silk reeling method, the amber silkworm cocoon silk reeling method developed on the basis of the cocoon cooking liquid has the advantages that the cocoon cooking conditions are relatively mild, the damage to the mechanical property of silk fibers is small, and the color and luster of cocoon silk are reserved to a large extent; the end groping is easy, the reelability is good, the end dropping frequency is reduced, and the working efficiency is improved; the method is simple and convenient to operate, and the process cost is saved.

The invention relates to a rapid degumming process and a preparation method for efficiently obtaining regenerated silk fibroin, which comprises the following steps: (1) dissolving sodium carbonate in deionized water, heating and boiling, and putting silk; (2) performing ultrasonic treatment on the treated silk, placing the treated silk in a drying oven, and drying the silk to constant weight to obtain degummed silk; (3) dissolving the degummed silk in a ternary solvent consisting of calcium chloride, water and absolute ethyl alcohol; (4) performing dialysis, suction filtration and centrifugation on the dissolved silk solution to obtain a silk fibroin solution; and (5) freeze-drying the obtained silk fibroin solution to obtain regenerated silk fibroin. According to the method, the complete silk fibroin fiber can be obtained, the damage to the silk fibroin structure is reduced to the greatest extent, and the degumming time is further shortened. By optimizing the dissolving condition of the degummed silk, the hydrolysis degree of the degummed silk is improved, and the regenerated silk fibroin with the highest extraction efficiency is further obtained.

The spun silk of bagworm larvae discharged on a substrate has not been effectively utilized in the past because it is difficult to recover. The object of the present invention is to develop and provide a method for recovering spun silk of bagworm larvae as a silk piece without damage by peeling it from a substrate with weak force. A method for producing a silk piece formed of spun silk of bagworm larvae by separating it from a substrate after applying a wetting liquid that exhibits a liquid state at at least 20°C and less than 30°C to spun silk of bagworm larvae discharged on the surface of the substrate without damaging, modifying, or dissolving the spun silk.

Electrospun films of nonwoven silk nanofibers, when appropriately structured, can surpass Cyphochilus scales in scattering strength for the entire visible spectrum. Detailed modeling studies demonstrate how the key structural parameters affect scattering properties in the electrospun films. An electrospun film with the similar characteristic structural parameters as those in Cyphochilus scales provides two resonance peaks in the visible reflectance spectrum in the limit of a uniform fiber diameter. As the distribution of diameter increases appreciably to experimentally achievable degrees, the resonance peaks broaden and the reflectance spectrum becomes relatively flat with stronger scattering in shorter wavelengths, resulting in disappearance of the structural color. This supports the concept that controllable fibrous nanostructures that exceed the exceptionally strong broadband optical scattering found among living organisms can be volume-produced.

The utility model relates to the technical field of silk, and discloses refining equipment for improving color and luster of silk, which comprises a soaking box, the left side and the right side of the soaking box are fixedly connected with supporting plates, the tops of the supporting plates are fixedly connected with fans, and the left end of the fan on the right side is communicated with a breather pipe. Fixing plates are fixedly connected to the left side and the right side of the top end of the inner wall of the soaking box, a heating box is fixedly connected to the tops of the fixing plates, a plurality of ventilation holes are formed in the outer wall of a ventilation pipe, a spring is fixedly connected to the bottom of the inner wall of the ventilation pipe, and a sliding block is fixedly connected to the top of the spring; and auxiliary mechanisms are arranged on the front side and the rear side of the soaking box. According to the silk soaking device, silk is put into the soaking box, a solvent is added, the fan is started to suck air, and after heating, the air pushes the sliding block to extrude the spring and enters the solution at a certain speed through the vent holes to stir the solvent, so that the silk fully absorbs the solvent, and the reaction is accelerated.

The invention relates to the technical field of biological material processing, in particular to a high-toughness and high-strength silk-based composite film preparation method which comprises the following preparation steps: S1, weighing materials: weighing 1 g of silkworm cocoons, tearing the silkworm cocoons into slices, soaking the slices in pure water, then putting the slices into a lauryl sodium sulfate and sodium carbonate mixed degumming solution, and uniformly stirring the slices; degumming the silkworm cocoons in a water bath heating state; s2, degumming treatment: quickly washing the fibroin fibers degummed in the step S1 in hot water and pure water for multiple times, and putting the fibroin fibers into a drying oven for drying; and S3, dialysis treatment: putting the fibroin fibers in the step S2 into a lithium bromide solution, and carrying out vortex oscillation dissolution. The film is prepared from the high-molecular-weight regenerated silk fibroin with the heavy chain average molecular mass larger than 300 kDa, and compared with traditional low-molecular-weight degraded silk fibroin, the material prepared from the high-molecular-weight regenerated silk fibroin is better in mechanical performance.

A bagworm silk thread spun on a base material was conventionally difficult to be collected, and thus, cannot be utilized. An object of the present invention is to develop and provide a method in which such a bagworm silk thread is peeled off from a base material with a weak force without being damaged and is collected as a thread bundle. Provided is a method for producing a thread bundle of a bagworm silk thread, including: applying, to a bagworm silk thread spun on the surface of a base material, a wetting liquid which presents a liquid form at least in the range of 20°C or more and less than 30°C and does not damage, denature, or dissolve the silk thread; and then separating the bagworm silk thread from the base material.

The present disclosure provides a method for sericin removal. Since sodium borohydride has a high hydrogen storage performance, a convenient hydrogen release, and relatively-stable chemical properties, the sodium borohydride in a sodium borohydride aqueous solution reacts with water slowly to release hydrogen. A large number of accumulated hydrogen bubbles pass through silk fibers, and produce an upward pulling force to the sericin on a fiber surface along the silk fibers under the action of inertial force and surface tension, thereby achieving the sericin removal at room temperature. Moreover, the method for sericin removal has a simple process, a complete sericin removal effect, and no damage to the structure of silk fibroin fibers, and can prepare the silk fibroin fibers with high flexibility and bright color.

The utility model relates to silk protein degumming equipment which comprises a tank body, a stirring space is defined by the tank body, and the tank body is respectively provided with a feed port, a water injection port and a water outlet which are communicated with the stirring space; the stirring mechanism comprises a first driving part, a stirring shaft and a stirring paddle, the stirring paddle is located in the stirring space and connected to the stirring shaft, and the stirring shaft is connected to the output end of the first driving part; the feeding mechanism comprises a feeding pipe, a cutter, a baffle and a second driving part, and the feeding pipe is arranged at the feeding opening and communicates with the stirring space. Through the arrangement, the silk protein is cut up by the cutter, so that the clustered silk protein is broken, and the silk protein raw material and the degumming liquid in the stirring space are stirred by the stirring paddle, so that the silk protein raw material and the degumming liquid are fully mixed, and the degumming efficiency is further improved.

The present invention belongs to the technical field of silk fibroin fiber membranes, specifically relating to an ultrathin, high-toughness, ion-conductive silk fibroin fiber membrane, its preparation method, and its application. The present invention imparts excellent ionic conductivity to the fiber membrane by introducing lithium chloride into the membrane. The plasticizing effect produced by the hygroscopic water further enhances the material's tensile properties, enabling it to detect a wide range of strains. This property, combined with biocompatibility, offers significant advantages in the fields of wearable strain sensors and stretchable electrodes, while avoiding the poor air permeability and non-degradability of traditional polymer substrates.

The invention provides a preparation method of a soft and skin-friendly embroidery textile, and belongs to the technical field of textile fabrics, the preparation method comprises the following steps: step (1) spinning: uniformly mixing cotton fibers, modal fibers and modified silk fibers, and processing by adopting a ring spinning process to obtain blended yarns; (2) weaving: weaving the blended yarns by adopting a circular knitting machine in a double-rib warp knitting structure to obtain gray fabric; (3) finishing: adding the gray fabric into the fabric finishing liquid for dipping, pre-drying, baking, washing and drying to obtain a finished fabric; and embroidering the finished fabric by adopting an embroidery machine to obtain the finished fabric. Wherein the modified silk fiber is prepared from a silk protein solution, modified graphene and a chitosan composition through wet spinning. The prepared embroidery textile is soft, skin-friendly and good in air permeability, and has good antibacterial performance and washing resistance.

The present application relates to a kind of methods for degumming silk with microbial fermentation of sapindus distillate, Rhizopus, rice flour and deionized water are mixed in proportion to ferment for 24 hours, then yeast and the aforementioned fermentation liquor are mixed in proportion to continue fermenting for 48 hours, the supernatant is reserved for later use, mature sapindus pericarp is dried and powdered, and deionized water is mixed in proportion to prepare sapindus suspension, the fermentation liquor and suspension are mixed in proportion to ferment thoroughly, impurities are filtered by vacuum filter, the filtered fermentation liquor is heated to 90-100 DEG C, and the degumming is carried out by putting the dried cocoon pieces in proportion, the cocoon pieces are dried again after repeated boiling and washing for 5 times, the weight difference of the dried cocoon pieces before and after degumming is compared, and the degumming rate of the present application is 20-23%. The present application uses sapindus pericarp as the basis to prepare degumming liquid by microbial fermentation, which can realize efficient degumming of silk, enhance the antibacterial property of silk, does not affect the strength of silk fibroin, and ensures natural and pollution-free, and the degumming waste liquid can be recycled and reused.

The utility model discloses efficient environment-friendly silk degumming equipment which comprises a degumming barrel and a PLC (programmable logic controller) fixedly mounted on the outer wall of the degumming barrel, a lifting barrel cover is fixedly mounted on one side of the outer surface of the degumming barrel, and a stirring component is mounted on the lifting barrel cover; a lifting rod is fixedly installed at the bottom of the degumming barrel, the movable end of the lifting rod penetrates through the degumming barrel and is in sealed sliding connection with the degumming barrel, the movable end of the lifting rod is fixedly connected with a heat insulation shell, a rotating assembly is installed in the heat insulation shell, and a supporting seat is fixedly installed at the movable end of the rotating assembly. According to the silk degumming device, through the arrangement of the lifting barrel cover, the stirring assembly, the lifting rod, the heat insulation shell, the rotating assembly, the supporting base and the filter cylinder, manual degumming work of personnel can be simulated, centrifugal dewatering can be carried out during liquid drainage, the silk dewatering efficiency is improved, operation steps are reduced, and the silk processing efficiency is improved.