46 results about "Dye penetration" patented technology

The invention belongs to a roller production technology of a slab band hot milling roll transport roller way. The invention provides a biconical roller production technology of a large-sized slab band hot milling roll transport roller way as follows: forging blank piece normalizing treatment, ultrasonic inspecting, rough machining before thermal refining, thermal refining, semifinishing, roller body surface quenching, tempering, finish machining and inspection of all surface magnetic powder of the roller or dye penetration; in the processes of the roller body surface quenching and the tempering, the biconical roller is divided into different heating sections according to the roller body structural size of the biconical roller, the different sections of the biconical body adopt the mode of different heating strength and same heating time according to different structures of the sections, so that all surfaces of the roller can simultaneously obtain the identical quenching temperature and the identical depth of temperature penetration; in order to obtain the proper quenching hardness and the sufficient hardening layer and simultaneously avoid quenching cracks and reduce quenching deformation, the invention adopts the technique of water-oil double medium quenching.

Media for receiving a printed image during sublimation or heat activated ink printing, and for transferring the image to a final substrate during subsequent heat transfer and activation, and a process of using the media. The media comprises a fibrous sheeting material, which can curve and conform to a three dimensional object to be imaged during the transfer printing process. A thin metal or metalized layer is to be applied onto the fabric/textile sheet shielding the fibrous structure, creating a reflective surface with excellent release properties. This reflective surface allows minimal dye penetration and excellent heat conductivity during heat transfer.

The invention belongs to a multifunctional resin coloring modifier and a preparation method thereof. The multifunctional resin coloring modifier comprises, by weight, 10-35 parts of modified melamine urea formaldehyde resin, 1-10 parts of water soluble dye, 1-10 parts of dyeing assistants, 1-10 parts of fire retardants, and 50-80 parts of water. The modified melamine urea formaldehyde resin is prepared from, by weight, 30-50 parts of formaldehyde, 30-50 parts of melamine, 30-50 parts of methyl alcohol, 10-20 parts of urea, 10-20 parts of polymerization inhibitors, and 40-60 parts of water. According to the multifunctional resin coloring modifier and the preparation method thereof, dyeing and functional modifying of wood materials are integrated, the good modified characteristic of the dyed wood is achieved which the dye penetration, leveling property, color fastness, light resistance and the like are achieved. The multifunctional resin coloring modifier and the preparation method thereof have the advantages that operation is easy, implementation is easy, the production cost is low, a dyed material is large in density, high in strength, stable in dimension, resistant to abrasion, resistant to flame, uniform and rich in color, firm and durable, energy is saved in the production process, and environmental friendliness is achieved.

The invention relates to the technical field of aircraft fuel system mechanical part accessory repairing, in particular to a method for repairing aircraft fuel system aluminum silicon alloy shell casting defects. The method includes the following steps of S1, decomposition cleaning; S2, defect positioning and removal; S3, dye penetration; S4, cleaning; S5, protection; S6, surface pretreatment; S7,preheating before spraying; S8, cold spraying; S9, coating processing; S10, stress relief treatment; S11, dye penetrant inspection; and S12, anti-corrosion treatment. According to the method for repairing the aircraft fuel system aluminum silicon alloy shell casting defects, the problems of a heat crack of a shell and base material annealing softening caused by large heat input of a traditional surfacing process are effectively avoided, the repairing problem of the aircraft fuel system aluminum silicon alloy shell casting defects is solved, at the same time, casting defect repairing of the shell can be realized under the operation temperature of less than 120 DEG C, the problem of scrapping of a whole part of accessories due to shell damage or secondary damage caused by repairing is avoided, and economic benefits are significant.

The invention discloses a carrier dyeing method of para-aramid fibers. The carrier dyeing method comprises the steps that mechanical carding is conducted on the para-aramid fibers to be dyed; the carded para-aramid fibers are dyed. Mechanical carding has the two functions that firstly, by observing the surface appearances of the fibers through a scanning electron microscope, the facts that after the fibers are carded, under the action of mechanical force, the surfaces become rough, most macromolecular chains are fractured, punctiform pots are produced, and dye absorption and uptake are facilitated can be discovered; secondly, by means of mechanical carding, impurities in the fibers are removed, the fibers become fluffy, the specific surface area of the fibers making contact with dye is increased, and dyeing of the fibers is facilitated. Through research on a dyeing process, the problems that when para-aramid dyeing is conducted at present, the dye-uptake rate is low, dye penetration cannot be achieved, and neutral and deep color dyeing cannot be achieved are solved. Conventional equipment is used in the carrier dyeing method, and the carrier dyeing method has the advantages that processes are simple, environmental friendliness is achieved, procedures are short, and inherent excellent performance of the fibers will not be damaged.

The present invention provides a dye penetration welding line leakage test process for an aluminium alloy car body, comprising the steps of eliminating all of the oxide scale, pocking and dust on the welding line to be tested; washing the oil contamination off the welding line to be tested and cleaning the welding line by a piece of clean cloth or cotton yarn; spraying and coating osmotic agent evenly on the outside of the welding line to be tested every 2 to 3 minutes, making sure that the welding line is wet within 10 to 15 minutes; observing whether leakage exists on the other side of the welding line or not and mending the welding line if leakage exists. Therefore, the probability that the welding line on the car top leaks can be avoided by using the process with high technique sensitivity and reliability surpassing the rain test in the present invention, and the probability of accumulated water pollution caused by the rain test in workshop can also avoided. Furthermore, the quality of the welding line surface on the car top can be ensured through fault detection because the process can be performed easily without any other devices and the result is easy to observe. General process workers can perform the dye penetration welding line leakage test process after a simple training, thus, professional fault detection workers are not necessary.

The invention provides a method for welding a pull rod for a production line of cold expansion pipes, which comprises the following steps: preparing before welding; preparing a short joint end of the pull rod; preparing of a long joint end of the pull rod; welding; detecting after the welding, namely, carrying out ultrasonic and dye penetration inspection for the welded joint after the pull rod is welded. The method has the advantages that by adopting an unconventional method to weld and repair the pull rod for the production line of the cold expansion pipes, the method solves the technical problems of integral preheating of the pull rod, heat treating after the welding and welding at low temperature, avoids multiple technical defects, shortens repair time, and reduces loss of oil fields. The pull rod is a key component of production line equipment for the cold expansion pipes in the oil fields, and directly influences production operation after the pull rod is damaged, then the downtime loss is 320, 000 Yuan per hour, and if spare parts are bought abroad, several months are needed. The method generates certain social benefit and larger economic benefit, and provides scientific repair method for guiding production practice for projects in the same field.

The invention relates to a centrifugal compressor shaft wearing repair method which comprises the following steps: determining a wearing region of a centrifugal compressor shaft; carrying out grinding treatment on the wearing region, carrying out dye penetration flaw detection on the ground centrifugal compressor shaft when a hardness value of the wearing region reaches or approaches that of the centrifugal compressor shaft, and stopping grinding to the wearing region after determining no defect after flaw detection; carrying out metal ceramic coating spraying treatment on the wearing region by a supersonic flame spraying gun; carrying out grinding treatment on a metal ceramic coating to enable the size of the diameter of a region shaft after the metal ceramic coating is applied to be the same as an original set size; carrying out the dye penetration flaw detection on the metal ceramic coating subjected to grinding treatment, thus obtaining a finished product after the metal ceramic coating passes through the dye penetration flaw detection. The centrifugal compressor shaft wearing repair method has the advantages of high efficiency, good binding force of the coating and the shaft, energy conservation and environmental protection, and also has the advantages of little heat input and reduction in risk of deformation and bending of the centrifugal compressor shaft.

The invention relates to a manual lamp, especially for optical crack testing according to the magnetic powder testing and dye penetration method. Said manual lamp comprises at least one LED having an emission wavelength located in the UVA range as an illuminating means.

The invention provides a thermal transfer powdery coating and a preparation method and application thereof. The thermal transfer powdery coating comprises, by weight, 51-90 parts of epoxy resin, 40-60 parts of carboxyl polyester resin, 0.5-5 parts of micro-nano polytetrafluoroethylene particle composition, 0.1-5 parts of a surface tension regulator and 0.5-5 parts of a nano filler. The thermal transfer powdery coating is prepared by dispersing, mixing and extruding all the components and then tabletting and crushing the components. The provided thermal transfer powdery coating can be rapidly cured at the low temperature and can be used for coating the surfaces of heat-sensitive substrates such as wood, glass, paper and plastic; a cured coating film has high crosslinking density and hardness, excellent solvent resistance and great substrate adhesion; the surface roughness and surface tension of the powdery coating are suitable for rapid and clear low-temperature thermal transfer, and the dye penetration degree is high.

The invention discloses a separator plate disk for textile printing and dyeing machinery. The separator plate disk includes a separator plate disk main body, a first wear-resisting reinforcing layer, a second wear-resisting reinforcing layer, dye penetration holes and plate disk main body fixing holes. The internal surface and the external surface of the separator plate disk main body are respectively provided with the first wear-resisting reinforcing layer and the second wear-resisting reinforcing layer. The separator plate disk main body is evenly provided with the dye penetration holes. The center of the separator plate disk main body is provided with the plat disk main body fixing holes. Through the aforementioned method, according to the invention, the separator plate disk has excellent wear-resisting property, long duration and strong penetration, allows a dye liquid to flow rapidly in a radioactive manner, and enables uniform dyeing.

Belonging to the textile industry, the invention in particular relates to an ultra-soft fast soluble film and a preparation method thereof specific to textile dyeing and finishing technology. The ultra-soft fast soluble film provided by the invention comprises the following components by weight percentage: 60-80% of stearic acid, 6-15% of diethylenetriamine, 2-5% of triethylene tetramine, 2-6% of triethanolamine, 3-6% of hydroxyethyl ethylenediamine, 2-7% of dimethyl sulfate, 0.1-1.2% of p-toluenesulfonic acid, 8-15% of fatty alcohol polyoxyethylene ether, 1.5-3.5% of a dispersing agent, 1-4% of a swelling agent, 1-3% of a leveling agent, 1-4% of a softening agent, and 2-6% of an efficient defoaming agent. The ultra-soft fast soluble film provided by the invention not only has good dye penetration and excellent dispersion properties, but also has strong acid and alkali resistance and dielectric resistance, can make the fabric fuller, smoother and more resilient, and has the advantages of no yellowing, no fading and no staining, etc.

The invention discloses a polyester cheese dyeing method which comprises the steps of grey yarn preparation, yarn loosening, dyeing, postprocessing, dehydration and spooling. The polyester cheese dyeing method further comprises the steps of boiling off and dehydration and yarn loosening and tipping after the yarn loosening step but before the dyeing step. The polyester cheese dyeing method is different from a traditional polyester yarn production process, and the purposes of yarn shrinkage at different degrees and oil removal through preprocessing can be achieved by adopting boiling off and tipping and then cooperating with appropriate boiling-off temperature and time. The tipping is performed after boiling off and dehydration, the process actions of repeatedly performing the preprocessing are omitted, it is ensured that no shrinkage situation occurs in the high-temperature dyeing process, and blocked dye penetration is avoided. By the adoption of the polyester cheese dyeing method, the problems of dyeing defects, chromatic aberration and the like in polyester yarn dyeing and the dyeing rate are obviously improved, the color stability is good, and the demands for production and dyeing of different polyester yarns can be met.

The invention discloses a preparation method of sodium alginate printing gum for pure cotton knitted fabric, and relates to the technical field of printing gum. The preparation method comprises the following steps: irradiating, adding water and soaking, washing, digesting, diluting, filtering, calcifying, decalcifying, and dehydrating to obtain alginic acid, adding sodium hexametaphosphate to thealginic acid, and adding sodium carbonate, performing a solid-phase neutralization reaction to obtain sodium alginate, pelletizing, drying, smashing, adding an auxiliary material, mixing and finally packaging to obtain a finished product. The printing gum prepared by the method is capable of improving uniformity of the product, improving product storage time and a product dye penetration percentage, and enabling dye to be uniformly dyed on cloth, uniform in printing color, clear in outthread, and bright in color, and reducing production cost.

The invention discloses an inkjet printing method ensuring the dye penetration effect of heavy fabric. After the heavy fabric is subjected to sizing, drying and rolling, inkjet printing is conducted; after inkjet printing is conducted, the fabric enters a roller press to be subjected to roll compacting and finally enters a drying machine to be dried; and the dried heavy fabric is subjected to dye color fixing, washing and sizing, and the heavy fabric is obtained. Compared with the prior art, the problem that penetration of inkjet printing of heavy fabric is poor is thoroughly solved, the equipment is simple, operation is convenient, and the quality is particularly easy to control. Compared with the prior art, the difficulty of inkjet printing of the heavy fabric is greatly lowered, the yield is greatly increased, and the equipment investment is also greatly reduced; and particularly, common inkjet printing equipment can be used for conducting inkjet printing on the heavy fabric, the equipment utilization rate is increased, in addition, the method has a very good effect on plush fabric, and the history that the plush fabric cannot be subjected to inkjet printing is over.

An improved method for dying leather with propylene glycol monomethyl ether (PGME) systems comprising adding polyacrylate resin base, C3 and C4 alcohols, and n-butyl acetate and negating the need for teflon dispersions, dibutyl phthalate, and improves the dye penetration, hastens the flash times, improve the dust free time, and improves the tape time.

A mechanized process for producing real wax floral cloth, which is characterized by spraying paraffin on the pattern of mechanical cylinders and rollers, using the cylinders and rollers to transfer the paraffin pattern to the cloth, printing and dyeing indigo in the space of the paraffin pattern, and printing The cloth with paraffin pattern is shaken to make the pattern form natural cracks before drying, then put the cloth in the dyeing tank of the desired color, let the dye penetrate into the cracks of the paraffin pattern, and finally dissolve the paraffin with hot water for washing. It can leave a hairline effect formed by the natural crack marks of the paraffin pattern on the cloth surface. It solves the problem of the high cost of batik using rosin and the failure to achieve the effect of hair batik, and is suitable for use on various types of fabric batik.

The invention discloses a method for preparing a solvent-free polyurethane resin adhesive and use thereof. The solvent-free polyurethane resin adhesive is obtained by reacting modified isocyanate prepared by ethers or ester polyols and ethers or ester polyols. The solvent-free polyurethane resin adhesive of the invention improves the dyeability by introducing a group which can be combined with a dye in the preparation process, and selects an appropriate ether polyol or a small molecule alcohol substance to enhance the effect of dye penetration; In addition, an organic solvent is not used in the preparation process, and the finished product has no solvent release and no solvent residue, and is environmentally friendly; compared with the solvent-based PU resin, the product has the advantagesof better dyeability, hydrolysis resistance, and the like.

The invention discloses an aqueous acid-and-alkali-resistant digital imaging coating. The aqueous acid-and-alkali-resistant digital imaging coating comprises 10-20wt% of water, 20-22wt% of an elastic emulsion, 20-25wt% of a fluorocarbon emulsion, 0.8-1.6wt% of a wetting agent, 0.7-0.9wt% of a dispersant, 3-5wt% of titanium dioxide, 7-9wt% of nanometer silica, 6-8wt% of an opaque polymer, 16-18wt% of light calcium carbonate, 0.05-0.7wt% of an antifoaming agent, 0.05-0.1wt% of a film forming assistant and 1-3% of a cationic color fixing agent. A film obtained through using the coating has the advantages of good ink fixing performance, good water resistance, unlikely color change and dye penetration, strong acid and alkali resistances, low softness, good elasticity, and suitable smoothness and glossiness.

The invention discloses an anti-fading textile dye and a preparation method thereof. According to the preparation method of the anti-fading textile dye, applied polyoxyethylene lauryl ether sodium sulfate belongs to anionic surfactants and can avoid damage skin when applied to the textile dye; camphor leaf extract, belvedere fruit extract and myrica rubra leaf extract are natural plant extracts and contain volatile plant oils such as eugenol and 1, 8-cineole, which can effectively inhibit bacteria breeding; besides, gentian violet prepared from Michler's ketone, N, N-dimethylaniline, phosphorous oxychloride, sodium carbonate and diluted hydrochloric acid can improve the affinity between the textile dye and textile fabric and further avoid dye fading; bentonite endows the textile fabric with a soft and fluffy feeling, thereby facilitating rapid dyeing and improving dye penetration; by combining with pentanediol, cyclohexanol acetate, ethyl cellulose, laurinol, sodium salicylate, sulfonated oil and deionized water, the prepared anti-fading textile dye has the advantages of being less prone to color fading, high in penetration effects and high in dyeing speed.