10results about How to "Meet bonding needs" patented technology

The invention discloses an adhesive hydrogel for oral periodontal tissue regeneration and a preparation method thereof, gelatin and polyacrylic acid are used as main raw materials, and a photo-crosslinking method is used as a basis to prepare the adhesive hydrogel; the adhesive hydrogel has good tissue adhesion, can be tightly adhered to wet soft and hard tissue surfaces, and overcomes the defect that the oral periodontal filling material is difficult to fix clinically at present. The adhesive hydrogel has high porosity after completely absorbing water and swelling, and pores in the surface and inside of the adhesive hydrogel are communicated with each other, so that the adhesive hydrogel can provide more space for growth of oral periodontal tissues, and is suitable for ingrowth of cells and regeneration of the oral periodontal tissues.

The invention relates to a two-component hot-pressing adhesive as well as a preparation method and application thereof. Comprising a component A and a component B. The component A comprises the following components in parts by weight: 150 parts of castor oil, 50-120 parts of polyether polyol, 150-300 parts of calcium carbonate, 0.5-5 parts of fumed silica, 0.5-5 parts of a surfactant, 0.01-0.5 part of a catalyst and 10-30 parts of an auxiliary agent, and the addition amount of the fumed silica in the hot-pressing adhesive is 0.1-0.4 wt%; and the component B comprises an isocyanate curing agent. The addition amount of the fumed silica in the hot-pressing adhesive is 0.1-0.4 wt%, so that the bonding performance between a metal plate and a porous cement plate and between the metal plate and a paper honeycomb can be improved, and the bonding requirement of a fireproof door is met; the organic tin catalyst is a stannous ricinoleate catalyst, the hot pressing time can be shortened to be within 6 min, and meanwhile the tensile shear strength can be improved to 4 MPa.

The present application relates to the low temperature curing high-strength benzoxazine type silicone adhesive formula and use method, the formula includes the benzoxazine group containing organic silicon compound and organic alkali compound, the mass ratio of benzoxazine group containing organic silicon compound, organic alkali compound is 100:0.1-20.The adhesive of the present application is based on the cooperation between the benzoxazine group containing organic silicon compound and the basic catalyst, can be cured at low temperature, realize the higher strength bonding.The benzoxazine type silicone adhesive formula provided by the present application can be directly used as adhesive, and the bonding strength is high;It can also be used as a basic formula, used as an adhesive after adding other fillers, to meet the different needs of various special occasions.

The invention provides water-based glass ionomer cement and an obtained dental restoration material, and belongs to the technical field of dental materials. The water-based glass ionomer cement consists of powder and liquid, the powder at least consists of 80-99% of fluorine-containing aluminosilicate glass powder in percentage by mass; the liquid agent is at least composed of 20%-60% of water, 20%-60% of polyolefin acid, 0.01%-20% of a polymerizable monomer containing a phosphoric acid group and 0.01%-20% of a polymerizable monomer containing a carboxylic acid group. According to the water-based glass ionomer cement product, the mechanical property and the bonding property of the product are effectively improved, and the bonding requirements of various dental materials such as enamel, dentin, metal, silicate-based ceramics and zirconia ceramics can be met at the same time; the problem that a traditional glass ionomer cement product is low in bonding strength to a zirconium oxide material is effectively solved, clinical selection of dentists can be facilitated, the medical burden of patients is expected to be reduced, and popularization of dental ceramic repair is further promoted.

The utility model discloses a bonding tool for a composite material co-curing test panel, which comprises an equipment bottom box, the top surface of the equipment bottom box is provided with a bearing groove in a penetrating manner, the inner bottom surface of the equipment bottom box is fixedly connected with a supporting column, the top end of the supporting column is fixedly connected with a supporting disc, the edge of the bearing groove in the top surface of the equipment bottom box is fixedly connected with a bearing ring, and the bearing ring is fixedly connected with a supporting plate. A bearing strip is arranged between the supporting disc and the bearing ring in the radial direction, an adjusting sliding groove is formed in the bearing strip in a penetrating mode, an adjusting sliding block is slidably connected into the adjusting sliding groove, and a clamping groove column is fixedly connected to the top face of the adjusting sliding block. The relative positions of the four groups of bearing strips and the positions of the clamping groove columns can be flexibly adjusted through the sliding fit of the bearing strips, the outer sliding grooves, the outer sliding blocks, the inner sliding grooves and the inner sliding blocks and the sliding of the adjusting sliding blocks in the adjusting sliding grooves.

The application relates to an antibacterial adhesive material and application thereof, relates to the technical field of adhesive materials, and solves the problem that the existing adhesive material is not good in function in a wet state environment. The coagulum formed after mixing cationic hydrochloride and anionic small-molecule sodium thioctic acid salt in a buffer solution and centrifugation is prepared through dehydration and solidification; the sodium thioctic acid salt is obtained through the following steps: dissolving sodium hydroxide in deionized water, adding alpha-thioctic acid into the solution in batches under intense stirring, filtering the obtained mixture with a polytetrafluoroethylene syringe filter, and freeze-drying; the cationic hydrochloride is polylysine hydrochloride, polyhexamethylene biguanide hydrochloride or branched polyethyleneimine hydrochloride. The application can be applied to medical antibacterial dressings, tissue adhesives or cultural relic restoration, and the adhesion is activated by physiological saline, a buffer solution or water before use.

The invention discloses a preparation process of an EVA hot melt adhesive with excellent conductivity, and belongs to the technical field of preparation processes of hot melt adhesives, the preparation process of the EVA hot melt adhesive with excellent conductivity specifically comprises the following steps: step 1, selecting raw materials; 2, melting and mixing the raw materials to form a mixture; 3, extruding the mixture, and filtering to remove impurities; 4, quantitatively taking the mixture, injecting the mixture into a mold, controlling the temperature, and waiting for cooling and molding to form a molded product; and 5, opening the mold, taking out a molded product, and then sequentially shaping, shearing, sub-packaging and storing to obtain a final molded product of the EVA hot melt adhesive. According to the invention, the viscosity value of the finally produced EVA hot melt adhesive can be effectively ensured, the service life of the finally produced EVA hot melt adhesive can be effectively prolonged, the conductivity of the finally produced EVA hot melt adhesive can be enhanced, the finally produced EVA hot melt adhesive can better meet the bonding requirements of electronic devices, and the application range of the EVA hot melt adhesive in production and life is widened.

The utility model discloses a radio frequency circuit board adjustable crimping device with a self-locking function, which belongs to the field of radio frequency circuit boards and comprises a base (1), a first pressing plate (4), a second pressing plate (6) and a pre-pressure adjusting plate (7) are sequentially arranged above the base (1) from bottom to top, a gap for placing a product is arranged between the base (1) and the first pressing plate (4), and the pre-pressure adjusting plate (7) is arranged on the first pressing plate (4). A first elastic piece is arranged between the first pressing plate (4) and the second pressing plate (6), an adjusting screw (9) is arranged on the pre-pressure adjusting plate (7), and the adjusting screw (9) penetrates through the pre-pressure adjusting plate (7) and is connected with the second pressing plate (6). A lifting mechanism used for controlling the second pressing plate (6) to ascend and descend is further arranged. The radio frequency board bonding pressure control device can realize pressure control during radio frequency board bonding, is simple and flexible to operate and uniform in pressing die stress, avoids the risk of crushing of the radio frequency board, improves the bonding efficiency, and reduces consumables and machining cost.

This invention discloses a coating solution for preparing high-temperature resistant and high-thermal-conductivity epoxy-based conductive films, its preparation method, and its application. By weight, it comprises the following raw material components: 70-85 parts liquid epoxy resin, 15-30 parts solid epoxy resin, 5-35 parts latent curing agent, 0.5-5 parts accelerator, 300-600 parts conductive filler, 15-30 parts thermoplastic resin, 0.5-2 parts coupling agent, and 30-60 parts solvent. The thermoplastic resin is a phenoxy resin with a special chemical structure and a molecular weight of 20,000-65,000 g / mol. This invention, by introducing a high-temperature resistant thermoplastic resin into the coating solution formulation, enables the prepared conductive film product to possess excellent comprehensive properties such as toughness, adhesion characteristics, and high-temperature stability.

The invention provides a preparation process of a formaldehyde-free adhesive, and relates to the technical field of material science, the preparation process of the formaldehyde-free adhesive completely avoids the use of formaldehyde, eliminates the potential harm of formaldehyde to the environment and human health from the source, and can be used for preparing the formaldehyde-free adhesive by accurately controlling the ratio of the raw materials and reaction conditions and adding specific auxiliaries. The prepared formaldehyde-free adhesive is remarkably improved in the aspects of viscosity, bonding strength, water resistance and other key properties, in the preparation process, parameters such as temperature, stirring speed and reaction time are elaborately optimized, nitrogen is introduced to keep an inert environment of a reaction system, and the formaldehyde-free adhesive is prepared. Side reactions such as oxidation are effectively prevented, and the quality and the stability of the product are improved. The optimized preparation process is simple to operate and easy to control, the production efficiency can be improved, the production cost can be reduced, and large-scale industrial production is facilitated.