30results about How to "Improve the adhesion firmness" patented technology

The invention discloses high-performance recycled concrete and a preparation process thereof, and relates to the technical field of concrete preparation. The concrete includes the following raw materials in parts by weight: 220-240 parts of cement; 140-160 parts of fly ash; 60-80 parts of mineral powder; 600-800 parts of modified recycled coarse aggregate; 500-700 parts of natural gravel; 600-700parts of machined sand; 20-40 parts of a reinforcing agent; 40-60 parts of silicon powder; 4-8 parts of other additives; and 180-200 parts of water. By adjusting the ratio of the various raw materialsof the concrete, adding the reinforcing agent and modifying the recycled aggregate, the working performance of the concrete can be effectively improved, and the compactness and overall strength of the concrete can be improved.

The invention relates to a modified fiber product, a preparation method and applications thereof. The modified fiber product contains modified fiber, wherein the modified fiber contains graphene substances, graphene substances with the particle size of being less than 1mum are mainly inside the modified fiber, and the graphene substances with the particle size of being 1-20mum are mainly outside the modified fiber. By reasonably matching the distribution of graphene substances inside and outside the fiber, the distribution evenness of the graphene substances can be realized, especially the distribution evenness in longitudinal direction can be realized; by distributing different particle sizes of graphene inside and outside, the density of graphene can be increased, and the conductivity of the fiber can be improved; by adding biomass graphene, the far infrared function of the fiber can be enhanced, so as to enhance the microcirculation of a human body after wearing; and graphene substances are compounded inside and outside the fiber, especially at the crystallization area inside, the firmness of the graphene substances can be greatly increased, and the washability of the fiber can be improved.

The invention relates to an enteric-coated oral vaccine for fishing, belonging to the field of oral vaccines for fishing. The enteric-coated oral vaccine for fishing comprises particles or pellets sprayed with a vaccine layer and sequentially coated with an isolating layer and an enteric-coated layer outside the vaccine layer. A dry powder composition A for spraying vaccine and coating the isolating layer comprises the following components (by weight parts) one or more film-forming agents selected from hydroxypropyl methylcellulose, polyvinyl alcohol and polyvinyl pyrrolidone 40-60 parts, one or more plasticizing agents selected from phosphoglyceride, triethyl citrate and polyethylene glycol 3-10 parts, one or more antisticking agents selected from silicon dioxide, magnesium stearate, talcum powder and titanium oxide 30-50 parts, and surfactant selected from lecithin and Tween-80 0-5 parts. The vaccine can be directionally released in intestinal tract.

The invention belongs to the technical field of aluminized films, and discloses a low-friction coefficient high-resistance aluminized film. The aluminized film is characterized by comprising a heat-seal layer, a first core layer, a second core layer and an aluminized layer which are arranged in sequence through four-layer co-extrusion casting the mass percentages of the heat-seal layer, the first core layer, the second core layer and the aluminized layer are 21%, 30%, 30% and 19% respectively; the heat-seal layer is made of ternary random copolymerization polypropylene (PP) resin and a modifying agent; the adding amount of the modifying agent is 10-15% of the mass of the ternary random copolymerization polypropylene (PP) resin; the first core layer is made of polypropylene resin; the second core layer is made of polypropylene resin; the aluminized layer is made of copolymer resin and a reinforcing agent; the adding amount of the reinforcing agent is 2-5% of the mass of the copolymer resin. The aluminized film prepared according to the method is relatively low in friction coefficient, and relatively high in heat-seal strength.

The invention discloses a planar coil diaphragm loudspeaker, which comprises an outer shell, wherein a membrane assembly, a magnet assembly and a supporting assembly are packaged in the outer shell; the membrane assembly at least comprises a coil, the two ends of the coil are each provided with an end point, one end point is located in the coil, and the other end point is located outside the coil;the number of the supporting assemblies is at least one; the supporting assemblies are used for supporting the membrane assembly; the surfaces, making contact with the membrane assembly, of the supporting assemblies are provided with bonding pads connected with end points located outside the coil; and the supporting assemblies are further provided with bonding pads for audio current input and bonding pads for audio current output. Compared with the prior art, the planar coil diaphragm loudspeaker has the advantages that the problem of how to effectively connect the internal end point of the closed coil with the outside is solved, the integrity of the membrane is not damaged, the area of the membrane is utilized to the maximum extent, damage to the film caused by spot welding or conductiveadhesive bonding after perforation is avoided, and damage to the integrity of the film is further avoided.

The invention discloses an anti-oxidation treatment method for a mirror, and belongs to the technical field of mirror treatment. The anti-oxidation treatment method for the mirror comprises the following steps of polishing the cut edge of a mirror; cleaning the cut edge and the outer surface of the mirror; coating the cut edge of the mirror with an edge sealing adhesive which covers the glass layer of the cut edge of the mirror, wherein the edge sealing adhesive is a viscous colloidal fluid, and the viscous colloidal fluid contains an antioxidant; and coating the whole back surface of the mirror with the edge sealing adhesive, wherein the cut edge edge sealing adhesive layer of the mirror and the back face edge sealing adhesive layer of the mirror are connected into a whole. The cut edge and the back surface of the mirror are integrally coated with the edge sealing adhesive, and the edge sealing adhesive covers the glass layer of the cut edge of the mirror, so that the attachment surface of the edge sealing adhesive is expanded, and the attachment firmness of the edge sealing adhesive layer of the cut edge of the mirror is improved; and compared with the mode of manually coating the edge sealing adhesive in the prior art, the anti-oxidation treatment method for the mirror has the advantages that the stability of the coating quality is better, the coating efficiency is higher, and the protection effect on the mirror is better.

The invention discloses a preparation method for preparing a maleic anhydride catalyst through light alkane selective oxidation. The catalyst is prepared by adopting salts or oxides containing V, Mo,Ti, P, Na and Ni as precursors to obtain a solution or suspension, drying, activating, homogenizing, emulsifying and spraying. The preparation method disclosed by the invention solves the problems oflong induction period, easiness in falling of active matters, low utilization rate of catalyst raw materials, poor working environment of workers and heavy environmental pollution of an existing catalyst.

The invention discloses a multifunctional floor tile which is attached to the ground, or a wall or a square column. According to the technical scheme, the functions of a floor tile are increased, and the using effect is improved. The tile is characterized in that no perpendicular angles are formed on the side faces of the periphery and are 40-degree angles inclined inwards, eight cylindrical grooves are formed in the back face and evenly arrayed, in the using process, the tile is convenient to construct, it is avoided that in the heat expansion process, top arching occurs, so that the tile is separated, and due to cement efflorescence, the tile is separated, attachment firmness of the tile is improved, and the multifunctional tile is ideal and easy to use and popularize in quantity.

The invention provides an antistatic filtering material as well as a preparation method and application thereof. The antistatic filtering material is prepared from the following components: filtering base cloth, graphene and a dispersing agent. The antistatic material provided by the invention has the advantages of permanent antistatic property, extremely low blocking coefficient, excellent mechanical property and high temperature resistance, and can avoid the problem of explosion caused by static electricity and discharge of chemical dust, coal dust and the like when being applied to dust filtration.