51results about How to "Improve composite fastness" patented technology

This invention relates to electricity materials technique field and to one silve to copper double compound band process method, which comprises the following steps: firstly grinding the silver metal oxidation with one thin siver band to form silver metal oxidation or silver compound materials; grinding silver metal oxidation and silver compound band through its top silver band layer and copper band heat grinding through heat compound band for annealing.

The invention discloses a preparation method of a titanium dioxide/polysiloxane photocatalytic composite film, which comprises the following steps: adding vinyl-terminated silicone oil, hydrogen-containing silicone oil and titanium sol into a film-forming solvent, uniformly mixing, adding a reinforcing agent silicon dioxide, uniformly mixing, adding a platinum catalyst to initiate silicon hydrogen addition reaction, pouring into a mold, and gradually forming the film along with the solvent volatilization and silicon hydrogen addition reaction, thereby obtaining the titanium dioxide/polysiloxane photocatalytic composite film. The method is simple in technique and easy to implement; the crosslinking level of the stereoscopic network structure of the composite film is controllable, and silicon dioxide granules can be uniformly and stably dispersed in the composite film in the form of primary particles and can be easily enriched and embedded in the surface layer of the composite film; and the composite film has the advantages of favorable mechanical strength and obvious ultraviolet shielding effect, has excellent photocatalytic functions of resisting bacteria, degrading organic substances and the like, and can be used in the fields of textiles, paints, buildings, cosmetics, sanitation, medicine and the like.

The invention discloses a manufacturing method of an inner pressure pipe type multilayer composite film. The manufacturing method comprises: a, uniformly mixing a film forming polymer, a film forming diluent, a film forming penetrant, a film forming pore forming agent and a film forming additive according to a certain mass percentage ratio, heating to a temperature of 130-390 DEG C with an extrusion molding machine through a thermally induced phase separation method, melting, uniformly mixing, extruding with a pipe type film inner film mold, and cooling to obtain the inner layer film of a pipe type film; b, weaving a warp and weft mesh pipe outside the inner layer film by using a warp and weft weaving machine, wherein it is ensured that the warp and weft mesh pipe is tightly attached to the surface of the inner layer film; c, coating the inner layer film outer layer attached to the warp and weft mesh pipe with a layer of an outer layer film; and d, extracting the prepared inner pressure pipe type multilayer composite film semi-finished product by using ethanol or isopropanol to obtain the inner pressure pipe type multilayer composite film finished product. According to the present invention, the inner pressure pipe type multilayer composite film has advantages of good separation performance, good compounding fastness and good mechanical property, the area of the effective filtration membrane can be increased, and the breaking of the film pipe and the damage caused by the separating and the layering between the filtration membrane layer and the support layer can be effectively avoided, such that the use efficiency and the service life of the film can be improved.

The invention relates to a preparation method of an anti-pollution and high-strength hollow fiber nanofiltration membrane. The technical solution of the present invention is to design a new spinning process (see Figure 1 and Figure 2), which uses polyethersulfone (PES), sulfonated polyethersulfone (SPES) or a blend of the two As the body material, the electrospinning technology is combined with the traditional non-solvent phase inversion spinning process. When the hollow fiber casting solution is extruded from the spinneret, the solution ejected from the electrospinning needle just enters the hollow fiber membrane wall. The two fall into the coagulation bath together to undergo phase inversion, and after rinsing, winding and other processes, a hollow fiber nanofiltration membrane with functionalized beaded fibers or superfine fiber bundles as reinforcements is obtained. Multiple beaded fibers or superfine fiber bundles form reinforcing ribs firmly embedded in the hollow fiber nanofiltration membrane (see Figure 3, Figure 4), which is difficult to peel off. The reinforcing rib is a high-strength resin mixed with inorganic particles, which endows the hollow fiber nanofiltration membrane with Higher strength and stain resistance. The process of the invention is simple and advanced, and is suitable for large-scale production of hollow fiber membrane plants.

The invention discloses a digital pre-coating film which comprises a hot melt adhesive layer, a primer coating layer and a substrate film layer which are arranged in sequence, wherein the hot melt adhesive layer is a mixture of an ethylene-vinyl acetate polymer and a tackifier; the content of vinyl acetate is 28wt%; the primer coating layer is polyethyleneimine; the substrate film layer is a biaxially oriented polypropylene film or a biaxially oriented polyester film. The digital pre-coating film has the benefits that the flowability of the ethylene-vinyl acetate polymer is improved by regulating the content of the vinyl acetate in the ethylene-vinyl acetate polymer, meanwhile, the softening point of the ethylene-vinyl acetate polymer is reduced, and the adhesion property of the ethylene-vinyl acetate polymer is improved; the tackifier is added into the hot melt adhesive layer, so that the wetting capability and the adhesion property of a hot melt adhesive to a substrate can be improved through the tackifier, and furthermore, the bonding strength of the pre-coating film can be improved.

The invention relates to the field of the processing of fish products and discloses a fine processing method of fish oil. The fine processing method of fish oil comprises the following steps: a, washing fish guts, removing giblets, pounding the fish guts to prepare a blank material; b, adding the blank material into an enzymolysis solution containing an immobilized magnetic composite enzyme for carrying out enzymolysis, and recycling the immobilized magnetic composite enzyme by using a magnet after carrying out enzymolysis; c, filtering the enzymolysis solution to remove residues, then standing and layering, and separating to obtain upper fish oil and lower oil-water mixed solution; d, transferring the oil-water mixed solution to a foam separating column, aerating the bottom of the foam separating column, generating a foam layer on the upper layer of the oil-water mixed solution, and separating the foam layer from the liquid in time; e, carrying out centrifugal separation on the oil-water mixed solution to obtain upper fish oil; f, mixing the upper fish oil obtained in step c with the upper fish oil obtained in step e to prepare the fish oil. The processing method of the fish oil is simple in the process and high in the extraction efficiency and the extraction rate; the processed fish oil is high in purity, free of fishy smell and pure in color.

The invention discloses a primer-free double-faced adhesive tape layer polypropylene pre-coated film and a preparation method thereof. The pre-coated film comprises a first hot melt adhesive layer, abase material film layer and a second hot melt adhesive layer which are arranged in sequence. Raw materials of the first hot melt adhesive layer and the second hot melt adhesive layer comprise an ethylene-vinyl acetate polymer, an antioxidant, a plasticizer and a tackifier, and the base material film layer is a biaxially oriented polypropylene film. The primer-free pre-coated film prepared by theinvention can be used for well bonding two materials with different properties, and has the advantages of high bonding composite fastness, stable product performance after bonding, no cracking and nodemolding.

The invention discloses a low temperature resistance dual-surface coating polyester aluminum laminated film, which is made from polyester base materials by coating on two surfaces, wherein one surface is coated with a polymethyl methacrylate (PMMA) composite coating, the other surface is coated with a polyurethane composite coating, the polyurethane composite coating is made from raw materials with parts by weight: aqueous polyurethane emulsion 30-40, water-epoxy resin emulsion 10-15, glycerol 2-4, rosins 2-4, acyclic acids 2-4, epoxidized soybean oil 1-2, turkey red oil 0.3-0.5, nano talcum powder 2-4, nanometer titania 1-2 and water 40-50. The low temperature resistance dual-surface coating polyester aluminum plating film can effectively an adhesion phenomenon, is excellent in barrier property and high in peel strength, has excellent acid and alkali resistance, improves compound fastness of the back surface of aluminum laminated films, is excellent in use performance, has excellent low temperature resistance simultaneously, is suitable to be used in low temperature cold environment, and is wide in appliance range and high in practical value.

The invention discloses a two-way easy-to-tear film. The two-way easy-to-tear film is three layers, including an outer layer, a middle layer and an inner layer. The outer layer comprises high-pressurelow-density polyethylene, low-pressure high-density polyethylene, linear low-density polyethylene and an ethylene-acrylic copolymer; the middle layer includes low-density polyethylene, metallocene medium-density polyethylene, an ethylene-methacrylic acid copolymer, and an ionomer or ethylene-norborneol dilute copolymer; and the inner layer comprises high pressure low density polyethylene, metallocene low density polyethylene, linear low density polyethylene, an ethylene-octene copolymer and functional master batch. The two-way easy-to-tear film has characteristics of good compound fastness, good customer experience and low cost, and is easy to tear in straight line in two directions.