36 results about "Fiber Chemistry" patented technology

The present invention is directed to disposable composite downhole tool formed of a resin-coated fiber. The fiber is formed of a degradable polymer, such as a poly(lactide) or polyanhydride. The resin is formed of the same degradable polymer as the fiber. It chemically bonds to the fiber, thereby making a strong rigid structure once cured. The fiber may be formed into a fabric before being coated with the resin. Alternatively, the fiber is formed of a non-biodegradable material.

Ballistic resistant materials having improved strength and lighter weights. More particularly, improved ballistic resistant fabrics produced from drawn, high modulus fibers having a reduced fiber diameter and improved physical strength properties, without changing other properties such as fiber chemistry, binder resin type and binder resin content. The fabrics incorporate low denier per filament monofilament fibers, low denier per filament multifilament fibers, or a combination of low denier per filament monofilament fibers and low denier per filament multifilament fibers in a specialized fabric construction to form fine fiber layers and fabrics having enhanced strength and fiber areal density without altering the fabric weight, or having reduced fabric weight without a corresponding reduction in ballistic performance.

The invention discloses an ananas hemp chemical degumming process. The process is characterized in that: the process comprises the following steps of ananas hemp piecing out and caging, pre-pickling, boiling, washing, pickling, denaturation, acid washing, washing, lignin removal, washing, greasing and drying procedures. The boiling comprises the following steps: adding the fibril into a 30 percent mixed liquor which is prepared from liquid alkali, trisodium phosphate and water glass and has a weight 15 to 17 folds of that of the fibril, keeping the pressure of 0.1 to 0.15 MPa for 4 to 4.5 hours, and taking out the fibril and washing the fibril by water. The mixed liquor used for boiling the fibril comprises 10 to 12 g/L of the liquid alkali, 0.4 to 0.6 g/L of the trisodium phosphate and 2 to 2.5 g/L of the water glass. The liquid alkali boiling eliminates non-cellulose substances in the ananas hemp, and makes the ananas hemp have a high capillary penetration action. The fiber molecules have relatively uniform lengths; the fiber fineness is high and reaches 550 yarns; and therefore the ananas hemp is suitable for spinning.

The inventions discloses a method for chemical modification, pigment dyeing and overflow sand wash of a fiber and application thereof to garment dyeing. The method comprises the following steps of: carrying out an anode chemical modification reaction on a cellulosic fiber of a fiber product by using a cation denaturing agent under the non-alkali condition of a fiber product; and then carrying out pigment dyeing and overflow sand wash treatment to enable the fiber product to form the traditional stone washing old-coped effect. Compared with the traditional processing technology, the invention has the advantages that: the hand feeling and the firmness of the products can be improved by modifying the fiber for pigment dyeing, and meanwhile, the technology can be simplified, the process can be shortened, and the consumption and the pollution can be reduced. The invention solves the quality problems on the hand feeling, the firmness, the color reproducibility and the like in traditional garment stone milling treatment.

The invention discloses a method for improving hydrophobicity and stability of wood based on nanometer titania. Low-viscosity urea resin, nano graphene and nanometer titania serve as materials, a micron-order rough texture structure of the wood is combined, a film of a micro-nano second-level concave-convex rough texture structure is established on the surface of the wood through a sol-gel method, lyophobic substances are modified on the film of the micro-nano second-level concave-convex rough texture structure, and a layer of lyophobic film is attached to the surface of the wood. The method has the beneficial effects that wood cell cavities are filled with the low-viscosity urea resin so that water inflow can be prevented; meanwhile, a fiber chemical group of the wood and the urea resin are subjected to the chemical reaction, cellulose framework chemical bonds are mutually combined, and firmness between the urea resin and the wood is enhanced; and by utilization of nanometer titania particles and the micron-order rough structure of the wood, a second-level convex-concave rough film structure simulating the surface of a lotus leaf is prepared, and the purpose of preventing water inflow is achieved.

The invention relates to body paper of a washi adhesive tape. By taking long fiber wood pulp, short fiber chemical and mechanical pulp, a wet strength agent, coating latex and a golden cypress extraction solution as raw materials, the body paper of the washi adhesive tape is prepared by the steps of pulping treatment, addition of auxiliaries, supercooling treatment, papermaking treatment, coating treatment and paper forming. The body paper provided by the invention has the beneficial effects that the body paper has good dry and wet strength and delamination resisting strength, and good tear resistance, can satisfy the strength demands in subsequent processing and actual use, is not layered, and has good flexibility; the body paper has good water resistance and solvent resistance and excellent ultraviolet resistance and temperature resistance, and can be used for reducing aging of the washi adhesive tape and prolonging the service life of washi adhesive tape; the body paper has good surface smoothness, so that production and processing of the adhesive tape are facilitated.

The invention belongs to the technical field of fiber material surface modification, and particularly relates to a method for surface modification by carbon fiber chemical nickel-plating. The method comprises the following steps: degumming, coarsening, sensitizing and activating. Firstly, glue on the surfaces of carbon fibers is removed through high-temperature firing, then the treated carbon fibers are soaked in a mixed solution of hydrofluoric acid and concentrated phosphoric acid, the microstructure of the surfaces of the carbon fibers is changed, the binding force between metal plating layers is increased, and then the coarsened carbon fibers are soaked in SnCl2, so that a layer of substance having good reducibility is attached to the surfaces of the carbon fibers; and firstly, the sensitized carbon fibers are soaked in an activating solution consisting of palladium chloride, ammonium chloride and sodium hypophosphite to form a layer of noble metal elementary substance on the carbon fibers, and finally, nickel plating treatment is performed on the activated carbon fibers, so that the modified carbon fibers have good wettability, and a nickel plating layer can be more uniform, compact and high in adhesive force.

Raw paper for printing Japanese paper adhesive tapes is prepared from following raw materials: long-fiber wood pulp, short-fiber chemical mechanical wood pulp, bamboo pulp, a filling material, a wet-strength agent, coating latex and an extract liquid of cactus. The raw paper is prepared through the steps of performing pulping treatment, adding additives to the pulp, supercooling the pulp, performing papermaking, coating the paper, drying the paper and performing press polish and cutting to obtain the raw paper. The raw paper for printing Japanese paper adhesive tapes has excellent surface flatness, high printing clearness, good printing effect, excellent softness, excellent dry and wet strengths, excellent delamination resistance strength and anti-tear performance, excellent water- and solvent-resistant performances and excellent anti-radiation performance and temperature resistance. The method can reduce aging in the raw paper for printing Japanese paper adhesive tapes and prolonging the service life of the raw paper for printing Japanese paper adhesive tapes.

The invention relates to a method for preparing activated carbon fiber medical dressing. The method specifically comprises the following steps: (1) carrying out pretreatments on a clean raw material fiber, such as deoiling, roughening and activating, and cleaning the clean raw material fiber; (2) chemically silvering the fiber, and supplementing related consumed functional components in the plating solution after the plating operation; (3) washing, dewatering and drying the silver-loaded fiber; (4) pre-treating, carbonizing and activating the silver-loaded fiber. The method is simple in process and principle, the used chemical silvering solution is stable and is suitable for mass production, and granules in the prepared silver-loaded carbon fiber material are firm in binding force with the matrix, moderate in mechanical strength, excellent in antibacterial ability and continuous in stability, so that the silver-loaded carbon fiber material has a broad application prospect in the healthcare industry.

The invention discloses a preparation method for preparing a continuous fiber copper pipe. According to the specific technical scheme, the preparation method comprises the steps that surface treatment of polypropylene continuous fibers is carried out; a sodium hydroxide solution is adopted for chemical oil removal, a chromic anhydride and sulfuric acid solution is used for surface roughening treatment, an acidic tin saline solution is used for fiber sensitization, a silver nitrate and ammonia water solution is used for fiber surface activation, and a formaldehyde solution is used for fiber reduction; then fiber chemical copper plating and fiber copper plating are carried out, and bivalent copper salt is adopted as main electroplating salt; the polypropylene fibers are removed under the oxidizing atmosphere; and the fiber copper pipe is obtained through reduction.

The invention belongs to the field of pulping and papermaking, and specifically relates to a preparation method of a natural-color bamboo fiber biochemical mechanical pulp. The method comprises the following steps: 1) preparing materials by a dry method; 2) sending bamboo chips obtained in the step 1) to a press for pressing; 3) mixing animal manure and the bamboo chips, and screened-out finely-divided debris such as bamboo sawdust, bamboo piths and knots according to a ratio, then performing aerobic fermentation composting, and adding efficient active biological complex bacteria while mixing;4) performing screening and dust removal treatment after fermentation is completed; 5) washing away surface substances of the bamboo chips after screening and dust removal, and removing excess water;6) performing pre-impregnation with a lye; 7) performing pulp grinding or pulp beating; and 8) performing papermaking. The method uses the combination of biological, chemical, and physical methods toproduce the natural-color bamboo fiber chemical mechanical pulp for packaging. At the same time, the method makes full use of the leftover materials in the production process to turn waste into treasure, and realizes sufficient and high-quality utilization of bamboo raw materials.

The invention discloses a benzoxazole ionic compound shown as a formula X, a sizing agent containing the compound, and a preparation method and application of the sizing agent. The benzoxazole ionic compound shown in the formula X is similar to the PBO fiber in chemical structure, the compatibility of the sizing agent and the PBO fiber can be improved, and the preparation process is simple and easy to operate. According to the sizing agent, the problems that an existing sizing agent is poor in compatibility with the PBO fiber, a large number of flammable and combustible organic solvents need to be used in the sizing agent, and nano reinforcements in the sizing agent are difficult to effectively cover the surfaces of the fibers are solved. The sizing agent takes water as a solvent, is greenand efficient, is simple and environment-friendly to prepare, and not only can keep the original tensile strength of PBO fibers, but also can remarkably improve the IFSS of the composite material.

The invention discloses a cellulose-based composite adsorbent for wastewater treatment, belonging to the technical field of adsorbents for wastewater treatment. The preparation method of the cellulose-based composite adsorbent comprises the following steps: pretreating bagasse, namely after bagasse raw materials are separated, purified and crushed, carrying out ultrasonic wave-alkali liquor-ultrasonic wave combined pretreatment to generate alkali fibers; carrying out chemical modification, namley carrying out oxidation treatment on the alkali fibers by adopting sodium periodate to obtain oxidized fibers; putting the oxidized fibers into a reaction medium, adding acid anhydride for a reaction, successivly conducting washing, dipping, filtering and drying, and carrying out an esterificationreaction with guanosine to obtain a product A; and putting the product A into an aqueous diaminopimelic acid solution for a constant-temperature reaction, and then carrying out washing and drying to obtain the cellulose-based composite adsorbent. The cellulose-based composite adsorbent for wastewater treatment prepared by the invention has high adsorption performance and shows a good removal effect on heavy metal ions and printing and dyeing wastes in wastewater; and the adsorbent is recyclable, simple to operate and high in adsorption efficiency.

The invention relates to a glass fiber chemical polishing agent and a preparation method and application thereof, in particular to a chemical polishing agent capable of effectively reducing the surface roughness of glass fibers and a preparation method thereof, and belongs to the technical field of glass fiber manufacturing, the technical field of organic/inorganic chemical engineering and the field of thermal protection base materials. The roughness of the glass fiber is reduced to 53-92 nm from 210 nm or above, and the tensile strength of the monofilament is remarkably improved to 1205-1654MPa from 917 MPa; the surface roughness of the glass fiber treated by the polishing agent is obviously reduced, and then the micro-defect size and quantity are obviously reduced and the strength of the glass fibers is obviously improved; in addition, the glass fiber polishing agent has the greatest characteristics of simple preparation process, wide raw material source, low price, simple and feasible treatment process, large mechanical property improvement amplitude and the like.

The invention belongs to the technical field of blended yarns and particularly relates to a manufacturing method of a novel chemical fiber blended yarn. The problems of high thickness and poor heat preservation performance and gas permeability of an existing garment fabric are solved. The following scheme is proposed. The method comprises the steps that cotton fibers, activated carbon fibers, chemical fibers and raw bamboo fibers are subjected to impurity removal, released and subjected to opening, the cotton fibers, activated carbon fibers and raw bamboo fibers are conveyed to a carding machine for carding, the chemical fibers are heated, mix-fused and prepared into a spinning solution, and through spinning, composite fibers are prepared; the cotton fibers, activated carbon fibers and raw bamboo fibers are convoyed into a combing machine; the cotton fibers, activated carbon fibers, raw bamboo fibers and composite fibers after being combed are evenly mixed and drafted; the drafted fibers are twisted and coiled to prepare a finished blended yarn product, and the prepared finished product is proper in thickness and good in heat preservation performance and gas permeability.

The invention discloses a linear density sampling device for a carbon fiber chemical composite material. The sampling device comprises an operation table, a control handle is arranged over the operation table, a sampling opening is formed below the operation table, buffering pads are arranged at the two sides of the sampling opening, the upper ends of the buffering pads are connected with the operation table, a base is arranged at the bottom of each buffering pad, a dust collection device is installed in the base, a sizing plate is arranged over the dust collection device and slides on the surface of the base, positioning piles are arranged in the periphery of the bottom of the base, chip removal holes are formed in the sampling area, dust collection holes are formed in the two sides of the sampling area, a handle is arranged at one side of the sizing plate, and a guide seat is far away from the handle and is arranged in the other side of the sizing plate. The sampling device has the advantages of convenience, rapidness and high dustproof performance, and further solves the problems that most operations are tedious, the equipment structure is complex, and a large amount of dust is generated during sampling.

The invention discloses a manufacturing process of high-count linen tow yarn. The manufacturing process comprises the following steps of carding raw materials by a hackling machine: taking tows with uniform thickness and uniform color based on the number of needles on the middle section of the hackling machine; and performing humidification curing, combined carding and gilling, and performing combing, roving and boiling and bleaching, wherein the boiling and bleaching process comprises four steps of acid pickling, chlorite bleaching, light boiling and oxygen bleaching. According to the invention, the raw materials are carefully selected, and the relatively uniform tows with good fineness consistency are selected; tow fibers are good in splitting degree and small in difference, so that the effect of the independently selected short fibers is far better than the effect of post-processed fibers; and in addition, improvement lies in boiling and bleaching, the fibers with the relatively good fineness are used, and chemical processing, namely, the boiling and bleaching technology is moderated, so that in the processing processes of chlorite bleaching and oxygen bleaching, the fibers are lighter than those in a conventional technology, the fibers are not damaged, and in order to ensure that the splitting degree is suitable and one step of light boiling is carried out, the spinning production and quality are improved.

The invention discloses a PLA multi-composite fabric and a preparation method thereof. The preparation method comprises the following steps: taking 100-150 parts of PLA fibers and 100-150 parts of composite fibers, starting to carry out textile processing, and carrying out opening picking, combing, drawing, roving, spinning, spooling and weft twisting to obtain the prepared composite fabric. In the step S1, the composite fiber is any one or more of PLA fiber or PLA fiber, natural fiber and chemical fiber; according to the PLA fiber composite fabric, the fabric is woven by any one or more of the PLA fibers, the natural fibers and the chemical fibers in a mixed mode, so that the PLA fibers obtain more matching effects in the weaving process, the convenience in the using process is improved, and more convenience is brought to people.

The invention relates to the technical field of glass fiber chemical plating, in particular to a glass fiber chemical silver plating process. The glass fiber chemical silver plating process comprisesthe following steps of pretreating, specifically, pretreating is used for improving the surface roughness of glass fiber to convert the surface of the glass fiber from hydrophobic to hydrophilic; applying plating, specifically, the pretreated glass fiber is immersed in silver plating solution to be subjected to silver plating; drying and heat treating, specifically, the glass fiber applied platingis dried, and then finished products are obtained. By means of the glass fiber chemical silver plating process, the surface silver plating of the glass fiber can be realized, meanwhile, the stabilityof a plating layer is made to be better, the binding force of the plating layer is made to be stronger, the overall quality of the glass fiber is improved, and the glass fiber chemical silver platingprocess has quite good practicability.