47results about How to "Less hairiness" patented technology

The invention relates to an impregnating compound special for single-filament plastic coated yarn and a preparation method thereof. The impregnating compound is prepared mainly by a main film former including water-solubility polyurethane and epoxy resin emulsion, and an assistant film former including water-solubility epoxy resin, as well as a coupling agent, a lubricating agent, a pH value adjusting agent and deionized water. The preparation method comprises the following steps: hydrolyzing the coupling agent in the deionized water; diluting the lubricating agent, and adding the diluted lubricating agent into the hydrolyzed coupling agent for stirring; adding the water-solubility polyurethane, the epoxy resin emulsion and the water-solubility epoxy resin for continuously stirring; and adding the deionized water and stirring uniformly. In the invention, the water-solubility polyurethane and the epoxy resin emulsion are taken as the film formers, so that the impregnating compound has the advantages of simple preparation process and low cost; and glass fiber yarn produced by the impregnating compound has extremely high breakage resistance and smaller fur containing amount, and the strength and the production efficiency of products are improved greatly, so that the impregnating compound is more suitable for promotion and application.

The invention provides an alkali-containing glass fiber direct roving sizing agent for spinning, and relates to a formula of a sizing agent. The formula consists of a coupling agent, a lubricant A, a lubricant B, epoxy resin emulsion, modified polyester resin emulsion, an auxiliary filmogen, a special additive, an antistatic agent and deionized water. By the sizing agent, the performance of alkali-containing glass fiber direct roving can be improved, a small quantity of feathers are generated in weaving, the breaking tenacity of the direct roving is high, and the production performance and application performance are high.

The invention provides an impregnating agent for reinforced nylon resin glass fibers. The impregnating agent compress a coupling agent, a film forming agent, a crosslinking agent, a lubricating agentand deionized water, wherein the coupling agent is a silane coupling agent; the film forming agent is polyurethane emulsion. According to the impregnating agent, the components are matched with each other to prepare the impregnating agent for the reinforced nylon resin glass fibers, particularly an impregnating agent for chopped reinforced nylon resin glass fibers. The invention also provides a preparation method for preparing the impregnating agent. The glass fibers prepared through the impregnating agent are high in collection property, small in fuzz amount, outstanding in processing performance, and high in compatibility relative to nylon resin; and the prepared composite material is outstanding in mechanical performance.

The invention provides electronic-grade glass fiber yarn secondary slurry. Polyvinyl alcohol, waterborne polyurethane, polyethylene glycol and a lubricating agent are matched to be used and researched, so that the prepared secondary slurry not only can protect warps and meet a high-speed weaving technology requirement, but also has the characteristics of easiness in desizing, small residual fat content after thermal burning off and the like. The invention further provides an electronic-grade glass fiber yarn treated by the secondary slurry and an electronic-grade glass fiber cloth woven by thesized yarn.

The invention relates to a novel forming and winding apparatus of glass fiber. Strand cake of glass fiber plied yarns produced via the novel forming and winding apparatus of glass fiber has the advantages of uniform tension, good strand integrity, low hairiness, high splitting rate and the like; finished rovings that are plied have higher quality level than most of products in the current market.The quality of the strand cake is improved, so that production efficiency and yield of subsequent steps can be increased, and production cost is reduced for enterprises. An auto-loading device and anauto-unloading device help improve labor efficiency and save manpower resources. The novel forming and winding apparatus of glass fiber is provided, which is reasonable in structure and convenient tooperate and helps effectively improve the product quality.

The invention discloses an organosilicone impregnating compound for quartz glass fibers and a preparation method for the organosilicone impregnating compound and relates to the field of quartz glass fiber impregnating compounds. The impregnating compound contains the ingredients in parts by mass: 4-10 parts of silicone resin, 4-10 parts of silicone oil, 0.1-2.0 parts of antistatic agent, 0.1-2.0 parts of viscosity regulator and 78-90 parts of diluent, wherein the diluent is ethyl acetate or butyl acetate. According to the organosilicone impregnating compound for the quartz glass fibers and the preparation method for the organosilicone impregnating compound, the condition that electrical insulation properties of the quartz glass fibers are not affected can be guaranteed, meanwhile, quartz glass fiber yarn treated by using the organosilicone impregnating compound is low in hair feather volume and relatively high in fracture tensile strength.

Disclosed are a high-strength, flame-retardant and high-temperature-resistant polyimide yarn and a manufacturing method thereof. The manufacturing method includes the following steps: (a) pre-treating polyimide chopped mixed fibers; (b) carrying out opening and picking, carding, drawing and roving; (c) directly preparing rove into a spun yarn, or twisting and winding the spun yarn and a fine-denier high-strength high-modulus polyimide fiber at a front jaw of a spinning frame into a core spun yarn; (d) sizing the prepared polyimide yarn for post-treatment. The prepared polyimide yarn has low hairiness, excellent mechanical properties and high flame retardancy, and the temperature can exceed 350 DEG C after long-term use.

The invention discloses a preparation method of a sizing agent for pure cotton yarn sizing. The method comprises the following steps that (1) beer distiller's dried grain is added into water, whereinthe bath ratio is (1:5)-(1:30); cleaning and filtering are performed; rest soluble sugar in the brewer's grain is filtered away; (2) the brewer's grain subjected to sugar removal is dried and is smashed into powder being 30 mesh; (3) protein type soluble substances in the smashed beer distiller's dried grain are extracted by a sodium hydroxide water solution; (4) a brewer's grain mixed solution issubjected to solid-liquid separation; the centrifugal rotating speed is 5000 to 10000rmp; the centrifugation time is 10 to 30min; (5) an acrylamide water solution and butyl acrylate are sequentiallyand dropwise added; after the dropwise adding is completed, continuous heat insulation and stirring are performed for certain time; the sizing agent is obtained. The viscosity of the prepared sizing agent is small; serous fluid can be favorably and better permeated through the inside of pure cotton yarns, so that the sizing efficiency is improved; meanwhile, the per se contains various substances;the size film property is excellent; the hairiness quantity of the pure cotton yarns can be obviously reduced; the wear-resisting property of the yarns is improved.

The invention relates to a method for reducing polyester yarn hairness. According to the method, modified polyester is adopted, and polyester yarns are prepared by polyester fiber of an oil agent withthe crown ether content being 67.3 to 85.58 percent by weight used in the oiling link in the spinning process, wherein the molecular chain of the modified polyester comprises a terephthalic acid chain segment, a glycol chain segment and a diol chain segment with branched chains; the structure of the diol chain segment with the branched chains is as follows: (the formula is shown as the description); and in the formula, R1 and R2 are independently selected from straight chain alkylene with the carbon atom number being 2 to 5, R3 is selected from alkyl with the carbon atom number being 1 to 5,and R 4 is selected from alkyl with the carbon atom number being 2 to 5. The method for reducing the polyester yarn hairness, which is provided by the invention, is simple and reasonable, the number of the prepared polyester yarn hairness is 1.8 to 2.1 pieces/10 km, the number of the prepared polyester yarn hairness is obviously reduced, the advantages of high uniformity, little hairness and highquality are achieved and great application prospect is achieved.

The invention relates to the technical field of thermoplastic chopped yarn production processes, and in particular, relates to an impregnating compound for thermoplastic chopped yarn production, a preparation method of the impregnating compound and a method for producing the thermoplastic chopped yarn after modification of the glass fiber filaments. Process waste generated in the glass fiber production process is chopped by a tiger's guillotine, granulated by a granulator, sprayed with the independently developed impregnating compound, dedusted by a dedusting device, finally enters a vibrated fluidized bed and is dried to finally produce the reinforced thermoplastic chopped yarn. The impregnating compound is prepared from the following raw materials in percentage by weight: 0.3-1% of a coupling agent, 1-15% of a film-forming agent A, 1-16% of a film-forming agent B, 0.6-2% of a lubricating agent, 0.05-0.3% of a cross-linking agent, 0.05-0.2% of an antistatic agent and the balance being deionized water. The preparation method of the impregnating compound is optimized. The treatment process is simple and reasonable, and the final product is clean and good in quality.

The invention discloses a hairiness color-mixed false-twist processed yarn which comprises polyester filaments A and polyester filaments B. The polyester filaments A and/or the polyester filaments B are/is of a slub structure, and part of slubs in the slub structure are cut off to form hairiness. The number of hairiness with the diameter larger than 2 mm is 100/1000 m or below. The anti-pilling effect of the hairiness color-mixed false-twist processed yarn is good. Meanwhile, after being dyed, the fabric made of the false twist processed yarn has natural stripe feelings with different colors, and the color mixing effect is good.