11results about How to "Maintain resilience" patented technology

The invention relates to the technical field of epoxy resin composite materials, in particular to an epoxy resin-based composite material and a preparation method thereof. The epoxy resin-based composite material comprises modified carbon fibers and an epoxy resin base material impregnated on a modified carbon fiber matrix, and the epoxy resin base material comprises the following raw materials in parts by weight: 80-100 parts of epoxy resin, 4-18 parts of a toughening elastomer, 24-45 parts of a curing agent and 1-3 parts of an accelerant. The carbon fibers are subjected to surface grafting hyperbranched molecular modification, so that the interface action between the modified carbon fibers and an epoxy resin matrix can be remarkably enhanced, and meanwhile, the high strength and high temperature-resistant stability of the carbon fibers are utilized, so that the epoxy resin-based composite material has good toughening, reinforcing and temperature resistance improving effects.

The invention discloses a heat insulation cotton felt. The heat insulation cotton felt is formed by curing and drying glass fibers sprayed with an adhesive. The adhesive is prepared from the following components in parts by weight: a modified phenolic resin solution, an organic silicon modified methyl methacrylate pre-polymerized solution, water, pentaerythritol, methyl emulsified silicone oil and dioctyl phthalate, the modified phenolic resin solution is obtained by the following steps: adding formaldehyde into a mixed solution consisting of phenol, xylenol and lignin, and reacting at the temperature of 40-60 DEG C to obtain a first solution; adding 5-15 parts by weight of a sodium hydroxide aqueous solution into the first solution to adjust the pH value of the first solution to 8-9, heating, cooling to 35-50 DEG C, adding sulfuric acid, and stirring to obtain a second solution; 20-40 parts of hexamethylol melamine is added into the second solution in batches. According to the heat insulation cotton felt, the resilience force of the glass fiber cotton felt is kept, and meanwhile the hydrophobic performance of the heat insulation and sound insulation module is improved.

The application discloses a glass fiber cotton felt, and relates to the technical field of thermal and sound insulation materials. The glass fiber cotton felt is obtained by spraying an adhesive on glass fibers, curing and drying. A modified phenolic resin solution is obtained by the following steps: adding 200-300 parts by weight of formaldehyde to 100 parts by weight of a mixed solution composed of phenol, dimethyl phenol and lignin, and reacting at a temperature of 40-60 DEG C to obtain a first solution, wherein the weight ratio of the phenol, dimethyl phenol and lignin is 10:2-4:1-8. An organic silicon modified methyl methacrylate prepolymer solution is obtained by the following steps: adding 100-200 parts by weight of methyl methacrylate to 100 parts by weight of a mixed solution composed of a silicon source and an organic solvent, uniformly stirring, and then adding deionized water and an initiator. The glass fiber cotton felt of the application has excellent hydrophobic performance, and the hydrophobic rate of the glass fiber cotton felt reaches 99% while the resilience of the glass fiber cotton felt is maintained.

The invention discloses a glass fiber cotton felt which is formed by curing and drying glass fibers sprayed with an adhesive, and a modified phenolic resin solution is obtained by the following steps: adding 200-300 parts by weight of formaldehyde into 100 parts by weight of a mixed solution composed of phenol, xylenol and lignin, and stirring uniformly; reacting at the temperature of 40-60 DEG C to obtain a first solution, wherein the weight ratio of the phenol to the xylenol to the lignin is 10: (2-4): (1-8); the organic silicon modified methyl methacrylate prepolymer liquid is obtained by the following steps: adding 100-200 parts by weight of methyl methacrylate into 100 parts by weight of mixed liquid consisting of a silicon source and an organic solvent, uniformly stirring, and adding deionized water and an initiator. According to the glass fiber cotton felt, the resilience force of the glass fiber cotton felt is kept, the hydrophobic rate of the glass fiber cotton felt reaches 99%, and the hydrophobic performance is excellent.

The utility model provides a fine line structure. The fine line structure comprises a dielectric layer; the circuit layer comprises an adhesion layer, a seed layer, a circuit layer and a protection layer, the adhesion layer is arranged on the dielectric layer, the seed layer is arranged on the adhesion layer, the circuit layer is arranged on the seed layer, and the protection layer is arranged on the circuit layer; wherein the side wall of the circuit layer is gradually shrunk from the top of the circuit layer along a second direction, and the side wall of the seed layer is gradually shrunk from the bottom of the seed layer along a first direction. Therefore, in the process of removing part of the seed layer, the protection layer is arranged, and wet etching can etch the circuit layer along the side wall, so that the part, close to the top surface, of the side wall of the circuit layer is gradually widened, the middle part is slightly narrowed, the circuit layer is further protected from being etched too seriously, the width and the shape of a circuit are protected, and the probability of line breakage is reduced; and the electrical property and the anti-pressure capability are maintained.

The invention discloses a cold laminating film for protection. A sound insulation cotton felt is formed by curing and drying glass fibers sprayed with an adhesive; the adhesive is prepared from the following components in parts by weight: a modified phenolic resin solution, an organic silicon modified methyl methacrylate pre-polymerized solution, water, pentaerythritol, methyl emulsified silicone oil and dioctyl phthalate, the organic silicon modified methyl methacrylate prepolymerization liquid is obtained by the following steps: adding 100-200 parts by weight of methyl methacrylate into 100 parts by weight of mixed liquid consisting of a silicon source and an organic solvent, uniformly stirring, and adding deionized water and an initiator to obtain the organic silicon modified methyl methacrylate prepolymerization liquid; the silicon source is formed by mixing tetraethyl orthosilicate and a silane coupling agent, and the weight ratio of the tetraethyl orthosilicate to the silane coupling agent is (1-3): 1. The hydrophobic performance of the heat insulation and sound insulation module is improved, the contact angle of the glass fiber cotton felt reaches 143 degrees, and the hydrophobic performance is excellent.

This invention relates to the field of tobacco machinery processing technology, and provides a packaging edge cutting system for cigarette tipping paper winding. The winding machine body is equipped with packaging paper, and an edge cutting adjustment roller is installed on one side of the winding machine body. An edge cutting blade holder is movably mounted on the edge cutting adjustment roller. An upper blade sleeve is rotatably mounted inside the edge cutting blade holder, and an upper blade body is fixedly connected to the outside of the upper blade sleeve. A lower blade sleeve is rotatably mounted on the outer wall of the edge cutting blade holder, and a lower blade body is fixedly connected to the outside of the lower blade sleeve. The upper and lower blade sleeves are rotatably connected to the outside of the edge cutting blade holder in a spliced ​​manner. With the assistance of a quick-change structure consisting of an installation rod, a limiting rod, and a double spring assembly, the system can quickly release the blade sleeve locking state by pressing the limiting rod to retract after the machine stops, achieving tool-free disassembly and assembly of the blade assembly.

The application discloses a kind of thermal insulation cotton felt, the thermal insulation cotton felt is formed by the glass fiber that is sprayed with adhesive solidification and drying;Adhesive is composed of the following components by weight parts: modified phenolic resin solution, methyl methacrylate prepolymers liquid modified by silicone, water, pentaerythritol, methyl emulsified silicone oil, dioctyl phthalate;Modified phenolic resin solution is obtained by the following steps: in the mixed solution consisting of phenol, dimethyl phenol, lignin, add formaldehyde, and obtain first solution under the condition of temperature 40~60 ℃ reaction;5~15 weight parts of sodium hydroxide solution is added in first solution to adjust the pH value of first solution to 8~9, and after heating, temperature is reduced to 35~50 ℃, add sulfuric acid and stir to obtain second solution;20~40 portions of hexamethylol melamine are added in second solution in batches.The thermal insulation cotton felt of the application improves the hydrophobic property of thermal insulation and sound insulation module while maintaining the resilience of glass fiber cotton felt.

The present invention discloses a printing and dyeing process for plastic products, which relates to the technical field of plastic product processing, and includes the following steps: a loading operation, clamping and placing the plastic product on a first clamping component until the end of the plastic product reaches the end limit component, using the end limit component to fix and clamp the end of the plastic product, and using the first clamping component to clamp and fix the inner wall of the plastic product; a printing and dyeing operation; a drying operation, using the drying component to heat the plastic product after printing and dyeing; and a unloading operation. The present application sets an end limit component, and uses the end limit component to limit and clamp the end of the cylindrical plastic product, and the end limit component can also buffer the rebound force when the cylindrical plastic product is squeezed to a certain extent, thereby ensuring the printing and dyeing position of the plastic product and avoiding the problem of poor printing and dyeing quality caused by the position movement of the plastic product.

The invention relates to the technical field of reinforcing and toughening of high polymer materials, and particularly discloses a high polymer grafted surface thorn-type mesoporous silica nano composite particle as well as a preparation method and application of the high polymer grafted surface thorn-type mesoporous silica nano composite particle. The nano composite particle is specifically characterized in that an inner core is a silicon dioxide nano particle with a center diverging mesoporous structure and a spiny surface; the outer layer is a polymer grafted on the surface of the inorganic core; mesoporous silicon dioxide nanoparticles with spikes on the surface, an amino silane coupling agent, a polymerization initiator and a polymerization monomer are used as raw materials, and the particle size of inorganic core particles and the grafting length of outer-layer macromolecules can be regulated and controlled in the synthesis process. The nano composite particles with the structure are used as polymer filler, the light transmission performance is similar to that of pure macromolecules, and the mechanical property is superior to that of pure inorganic nano particles; compared with traditional nanoparticles grafted with macromolecules, the light transmittance, rigidity and obdurability are comprehensively improved. The nano composite particle can keep excellent light transmission while effectively strengthening and toughening a high-light-transmission polymer matrix.

The invention belongs to the technical field of environmental protection, and particularly discloses a preparation method of a porous organic carrier PtBuMA loaded nZVI adsorbent and application of the porous organic carrier PtBuMA loaded nZVI adsorbent to adsorption of heavy metal ions in water. According to the preparation method, tert-butyl methacrylate is adopted as a monomer, a porous material-poly (tert-butyl methacrylate) which is small in density, rich in pore structure and large in specific surface area is synthesized, the synthesized poly (tert-butyl methacrylate) is hydrolyzed, and each structural unit of the poly (tert-butyl methacrylate) contains a free ester group; an ester group can become a carboxyl group after being acidified and hydrolyzed, so that a large number of active sites are provided for ion adsorption, and meanwhile, adsorption sites can be provided for nZVI, so that the nZVI can be better attached to the surface of PtBuMA. The finally prepared modified PtBuMA loaded nZVI adsorbent can be used for efficiently removing Cu (II), Zn (II) and As (III) ions in water.