61results about How to "Composite process is simple" patented technology

The invention relates to a paper plastic glue free compound bi-directional stretch polypropylene film, which has coextruded surfaced, core layer, functional layer being able to compound with paper, pre-print paper or thin film, with upper sub surface between the surface and core layer, and lower sub surface between the core layer and the functional layer. All of them are extruded through bi-directional stretch. It feeds formulated material into the extruder to melt, which is co-extruded into thick plates through slip cast, then the thick plates being stretched in both directions into thin film, which are processed through corona and flame into mother film, through effective treatment to get the final thin film product. It is simple in structure, strong in thermal sealing, high in stripping strength.

The invention relates to a carbon fibre wood electromagnetic shielding material and a preparation method thereof, belonging to the field of electromagnetic shielding materials. According to the invention, a carbon fibre reinforced wood functional composite material is formed by preparing glue mixed carbon fibre and glue mixed wood fibre according to the mass ratio of 3:7 to 1:1 through a hot-pressing mould process; the glue mixed carbon fibre is formed by mixing carbon fibre with isocyanate according to the mass ratio of 10:1; and the glue mixed wood fibre is formed by mixing wood fibre with urea-formaldehyde glue according to the mass ratio of 5:1. According to the invention, the functional wood composite material is prepared from carbon fibre as reinforcement and a wood fibre material (wood residue)through a simple and effective composite process; good electrical conductivity and electromagnetic shielding characteristics are given to the composite material while the mechanical property of the wood composite material is increased; furthermore, the wood optimization using purpose for recycling wastes is realized.

The present invention discloses one kind of biaxially stretched polypropylene film for no-adhesive paper-plastic combination and its preparation process. The film includes one surface layer, one core layer, one functional layer for direct combination with paper material, one second upper layer between the surface layer and the core layer, and second lower surface layer between the core layer and the functional layer. The film is prepared through plasticizing the material to form melt in an extruder, conveying the melt in a pipeline, filtering in a filter, forming film in a mold head, corona treatment or flame treatment to form mother film, and cutting into the film product. The biaxially stretched polypropylene film with on-line leached layer for no-adhesive paper-plastic combination has low power consumption, environment friendship, high heat sealing strength and high stripping strength.

The invention relates to a protective article and particularly relates to an easy-to-composite multi-layer composite mask and a manufacturing process thereof. The mask comprises a mask body; the mask body consists of a surface layer, an intermediate layer and an inner layer; both the surface layer and the inner layer are non-woven fabric layers; the intermediate layer is an electrostatically-loaded and melt-blown filter material layer; a pure cotton fabric layer is arranged between the surface layer and the intermediate layer; outer edges of the surface layer, the electrostatically-loaded and melt-blown filter material layer and the inner layer are composited by hot melting; the surface layer, the pure cotton fabric layer, the electrostatically-loaded and melt-blown filter material layer, and the inner layer are welded ultrasonically. According to the mask disclosed by the invention, because the electrostatically-loaded and melt-blown filter material layer is adopted by the intermediate layer and the cotton fabric layer can be fused between the surface layer and the intermediate layer, the mask has good filtering effect, low resistance, nice comfort and strong air permeability and water absorption; meanwhile, the multiple layers of materials are composited through ultrasonic welding, so the stitching with threads is avoided and the composite process is simplified.

The invention discloses a casting-penetrating method of a Al2O3 particle surface reinforced steel-base composite material. The method comprises five steps of proportioning, preparing Al2O3 precast blocks, roasting briquettes, fixing the precast blocks and smelting, casting and penetrating. In the composite material prepared by the method disclosed by the invention, the Al2O3 particles are embedded in the steel base perfectly; as the Al2O3 particles are mixed according to the particle sizes, the arrangement is relatively dense without clustering; and a steel substrate is filled around the Al2O3 particles in a metallurgical bonding state. The composite process provided by the invention is simple and has low cost, and is applicable to the surface recombination wear-resistant material in the working condition of low-stress abrasive corrosion wear.

The invention discloses a production method and a production system of an ultrahigh molecular weight polyethylene compound oil pipe. The method utilizes the memory property of the ultrahigh molecular weight polyethylene material and a special composite technology: conducting hole shrinkage treatment on an ultrahigh molecular weight polyethylene lining pipe with outer diameter larger than the inner diameter of a steel pipe, sheathing in the steel pipe, heating to restore inner diameter of the ultrahigh molecular weight polyethylene lining pipe, and forming the lining pipe with the steel pipe into an integral structure to reach a compactness and firmness without layering and stripping. By introducing additives, the invention greatly improves liquidity of the ultrahigh molecular weight polyethylene in order to produce the inner lining pipe with small wall thickness and reduce cost. The ultrahigh molecular weight polyethylene compound oil pipe provided by the invention comprehensively reserves specific superior performances of good memory property, high impact resistance, good temperature resistance, wear resistance, corrosion resistance, wax precipitation and fouling resistance of ultrahigh molecular weight polyethylene pipe. The invention also discloses a production system supporting the production method.

The invention discloses a polyaniline/MnO2 compound modified three-dimensional graphene composite material, a preparation method and application of the composite material. The preparation method comprises the following steps: dissolving manganese salt and an aniline monomer into dilute sulphuric acid solution with the concentration being 0.1-0.5mol/L, adding three-dimensional graphene serving as a working electrode, a saturated calomel electrode serving as a reference electrode and a platinum electrode serving as a counter electrode into the solution, performing electrochemical deposition by utilizing cyclic voltammetry, forming a compound from the polyaniline and MnO2 and depositing the compound in the three-dimensional graphene so as to obtain the polyaniline/MnO2 compound modified three-dimensional graphene composite material. The invention has the obvious characteristics that (1) raw materials are cheap, the compounding process is simple and convenient, the preparation cost is low and large-scale production is facilitated; (2) the ratio of the components of the component material can be controlled by controlling the scanning parameters of cyclic voltammetry and the amount of reactants; (3) the composite material has high specific electric capacity and stable electrochemical performance.

The invention relates to a gelatinized starch adhesive and a preparation method thereof. The gelatinized starch adhesive is mainly composed of starch, nickel sulfate, sodium hydroxide, sodium hypochlorite, sodium thiosulfate, borax, tributyl phosphate and water. The gelatinized starch adhesive has the characteristics of low price, simple compound process, strong adhesion, good fluidity, no toxic or odor and fast drying.

The invention discloses a composite waterproof moisture permeable fabric and a preparation method thereof, and belongs to the field of textile finishing. Spinning solution with different concentrationgradients is adopted, low-concentration spinning solution is pushed out of a solution storage pipe before other high-concentration spinning solution, hydrophobic material micro-nano liquid drops notforming fibers are firstly prepared on a traditional fabric and then pushed out along with the high-concentration spinning solution, hydrophobic materials can form fibers and can be collected on the traditional fabric, and the previous hydrophobic material micro-nano liquid drops function as adhesives and combines the traditional fabric together with electrostatic spinning nano-fibers to obtain the composite waterproof moisture permeable fabric. A compound technology is simplified, time and material cost are saved, and the problem of fabric thickness and performance non-uniformity caused by the adhesion process is avoided.

The present invention discloses one kind of biaxially stretched polypropylene film with off-line leached layer for no-adhesive paper-plastic combination and its preparation process. The film includes one base film comprising one or two biaxially stretched upper surface layers, one core layer and one or two biaxially stretched lower surface layers, and one functional film layer for direct combination with paper material. The film is prepared through preparing the base film by means of one co-extruding and biaxially stretching process and compounding functional melt in an off-line film leaching device onto the base film to form the functional film layer. The biaxially stretched polypropylene film with off-line leached layer for no-adhesive paper-plastic combination has simple structure, high heat sealing strength and high stripping strength.

The invention relates to a water-retaining tree-planting material and a preparation method thereof. The water-retaining tree-planting material is composed of two layers of plant fiber substrates and a water-retaining layer between the two layers of substrates. The preparation method of the water-retaining tree-planting material comprises the following steps: smearing an adhesive on one side of the substrate, spreading the water-retaining agent flatly, and then pressurizing and compounding the two layers of substrates to obtain the water-retaining tree-planting material. The water-retaining tree-planting material of the invention is green and environment-friendly, simple to manufacture, convenient to use, wide in application range, superior in market prospect, good in use effect and stable in performance.

A glass fiber reinforced plastic composite material is formed by composition of organic FRP (fiber reinforced plastic), FRIM and interface materials. A rectangular box of the organic FRP is coated on the surface of the FRIM, resin is painted and the interface materials are laid between the rectangular box and the FRIM, and the interface materials are alumina hollow spheres with a diameter of 3-5mm. The glass fiber reinforced plastic composite material is light in weight, good in intensity, high-temperature resistant, heat insulating, water-tolerant, simple in process, high in production efficiency, low in manufacturing cost and suitable for being used as fireproof boards and fireproof doors.

The invention discloses a polyamide-aluminum cold-stamping formed medicine packaging composite film. The composite film is characterized by sequentially comprising a polyamide layer, an aluminum foil layer and a heat seal coating layer, wherein a composite adhesive layer is arranged between the polyamide layer and the aluminum foil layer. Most of conventional packaging films adopt a twice dry-type compounding technology, so that in a cold stamping process, an aluminum foil layer is easy to break; and in a wet or strong-light environment, medicines are prone to oxidative deterioration because of a delamination phenomenon. The composite film is higher in isolation property to water steam, oxygen and light rays; the polyamide layer is made from PA6, is high in water absorption property and wet absorption property and can be recycled; and the heat seal coating layer is made of a double-component adhesive, has a non-drying property and a hot smelting property, and is high in bonding strength and suitable for packaging of health protection foods, medicines and other products with high requirements on high density and wet resistance.

The invention provides a lithium ion capacitor negative electrode pre-lithiation method, a composite negative electrode and a lithium ion capacitor. The lithium ion capacitor negative electrode pre-lithiation method comprises steps of 1, preparing a lithium ion capacitor negative electrode and a through hole lithium film with a supporting layer; 2, superposing the through-hole lithium film with the supporting layer with the negative electrode in a manner that one side of the through-hole lithium film is in contact with the surface of the negative electrode, and transferring the through-hole lithium film to the surface of the negative electrode through pressure compounding; and 3, separating the supporting layer, and collecting the negative electrode attached with the lithium film to obtainthe composite negative electrode of the lithium ion capacitor. 4, stacking or winding the composite negative electrode, the positive electrode and the diaphragm together according to the structure ofthe composite negative electrode, the diaphragm and the positive electrode; and 5, injecting an electrolyte, packaging, and carrying out pre-lithiation to obtain the lithium ion capacitor with the pre-lithiated negative electrode.

The invention discloses an interpenetrating network hydrogel material with a high thermal conductivity and a high elasticity, and a preparation method thereof. The preparation method comprises the following steps: hydroxyethyl cellulose is taken, and is dissolved in a graphene oxide/ammonium persulfate suspension, stirring is performed until uniformity, an appropriate amount of acrylic acid is added, then the obtained mixed solution is rapidly poured into a mold, the mold is placed in a constant temperature oven, the mixed solution is reacted for a period of reaction, and the obtained hydrogelin the mold is taken out, and is washed with deionized water to remove unreacted monomers and impurities in order to obtain the hydrogel containing a small amount of graphene oxide. The method of theinvention has a simple process, the obtained hydrogel has good compression resistance and good thermal conductivity, and the high thermal conductivity can be achieved by adding only a small amount ofthe graphene oxide; and compared with other thermal conducting media, the interpenetrating network hydrogel material of the invention has the excellent characteristics of good compressive strength, reusability, no oil permeation, low viscosity, and easiness in disassembling.