8results about How to "Fully crosslinked" patented technology

The application discloses a kind of copper electrode laser curing system and method of TOPCon solar cell, the system includes mid-infrared laser generation module, beam shaping and energy management module, precision motion and positioning platform and synchronous control and monitoring module.The method used is: after coating copper paste on the back silver seed layer of TOPCon battery, laser beam is irradiated, by accurately controlling laser energy density and pulse width, energy is selectively resonant absorbed by copper paste organic matter, millisecond level rapid curing is realized, while ensuring that energy density is lower than the damage threshold of lower layer aluminum oxide / silicon nitride passivation film, so that the base temperature rise is lower than 200 DEG C.The application overcomes the defects of traditional thermal curing, such as low efficiency, high energy consumption and easy damage to passivation layer, and provides an efficient, reliable and non-damage battery performance industrialization solution for TOPCon battery low-cost "de-silverization".

The invention discloses a manufacturing process of a liquid hydrogen storage tank with a carbon-based anti-seepage coating on the inner wall. The manufacturing process comprises the following steps that a liquid hydrogen storage tank base body and the carbon-based anti-seepage coating are prepared; wherein the carbon-based anti-seepage coating comprises carbon nanotubes and polymer resin, and the mass fraction of the carbon nanotubes in the carbon-based anti-seepage coating is 30%-50%. And the surface of the inner wall of the liquid hydrogen storage tank base body is coated with the carbon-based anti-seepage coating, the carbon-based anti-seepage coating is cured, and the liquid hydrogen storage tank with the carbon-based anti-seepage coating on the inner wall is obtained. Wherein the thickness of the carbon-based anti-seepage coating is 30 + / -5 [mu] m. The liquid hydrogen storage tank carbon-based anti-seepage coating prepared through the method is high in adhesive force, excellent in anti-seepage performance and high in pressure resistance, and the carbon-based anti-seepage coating is uniform and free of bubbles, cracks and other defects in the preparation process.

This invention discloses a multi-element doped porous carbon and its preparation method, belonging to the technical field of porous carbon materials. The preparation method includes the following steps: S1, mixing phenol, 4-(2-epoxyethylenemethoxy)phenol, formaldehyde aqueous solution, and a catalyst to obtain a mixed solution; S2, ultrasonicating modified graphene oxide in anhydrous ethanol to obtain a modified graphene oxide solution; S3, adding the modified graphene oxide solution to the mixed solution, heating and reacting, then adding a curing agent, stirring, and after the reaction is complete, dehydrating, drying, grinding, and curing to obtain a modified graphene oxide / phenolic resin; S4, carbonizing the modified graphene oxide / phenolic resin to obtain a carbonized material; S5, activating the carbonized material to obtain multi-element doped porous carbon. This invention ultimately yields multi-element doped porous carbon with both high conductivity and abundant pseudocapacitive active sites.

The invention discloses a high-temperature-resistant hot melt adhesive and a preparation method thereof, and relates to the technical field of hot melt adhesives. The high-temperature-resistant hot melt adhesive is prepared from the following raw materials in parts by weight: 25 to 35 parts of modified polyimide resin, 20 to 30 parts of modified benzoxazine resin, 8 to 12 parts of carboxyl-terminated nitrile rubber, 5 to 8 parts of C5 / C9 copolymerized petroleum resin, 3 to 5 parts of hydrophobic modified nano silicon dioxide, 1 to 2 parts of silicone powder, 0.5 to 1.0 part of antioxidant 1010, 0.3 to 0.8 part of zinc stearate and 0.05 to 0.1 part of tetrabutylammonium bromide. The high-temperature-resistant hot melt adhesive is scientific in raw material ratio, core resin is modified to improve heat resistance and compatibility, filler such as hydrophobic nano silicon dioxide is added to enhance performance, the preparation process is controllable, nitrogen protection is achieved in the whole process, moisture absorption is prevented through granulation and drying treatment, and a finished product is excellent in high-temperature resistance, good in comprehensive performance and good in storage stability.

This invention relates to the field of hot melt adhesive preparation technology, and more particularly to a method for preparing an insulating, heat-resistant, and flame-retardant hot melt adhesive for mechanical motors. The method includes determining the corresponding raw material type by obtaining the hydroxyl value index and isocyanate group index, thereby calculating the hydroxyl value deviation or isocyanate group deviation to determine the catalyst dosage adjustment range or the initial reaction temperature adjustment range; determining the reaction time for prepolymerization based on the adjusted catalyst dosage and initial reaction temperature; calculating the reaction uniformity and absorption peak intensity decay rate by real-time monitoring of the characteristic absorption peak intensity during the reaction; comparing the reaction uniformity with a preset reaction uniformity to determine whether to perform acceleration adjustment; and comparing the absorption peak intensity decay rate with a preset absorption peak decay rate to determine whether to extend the reaction time, ultimately preparing the hot melt adhesive. This invention effectively overcomes raw material batch fluctuations and process disturbances, significantly improving the consistency and overall performance of the hot melt adhesive.

The invention relates to the technical field of foaming product preparation, provides a foaming product with an invisible massage structure, and solves the technical defects of pressure concentration, use discomfort, uneven surface, limited application scene and infirm interlayer combination of the existing massage foaming product. In addition, the invention further provides a preparation method of the foaming product with the invisible massage structure, and the defects that an existing foaming product preparation process is uncontrollable, and precise forming and integrated stable combination of double-layer materials cannot be achieved are overcome. The foaming product comprises an upper layer and a lower layer which are integrally foamed and formed, the lower layer is provided with a massage structure protruding upwards, the upper layer wraps the massage structure, touch generated by the massage structure is buffered by the upper layer and then transmitted to the upper surface of the product, and therefore soft massage with the flat surface is achieved. The invention is widely applicable to the fields of shoes, sitting and lying appliances, sports protection and the like.

The application belongs to the technical field of organic silicone adhesive, and discloses a single-component organic silicone hot bonding adhesive capable of being cured in segments, and a preparation method and application thereof. The preparation method is as follows: first, end-vinyl silicone oil, hexamethyl disilazane and fumed white carbon black are mixed, kneaded and ground to obtain a first base material; then, methyl MQ silicone resin, methyl-vinyl silicone rubber, hydrogen-containing silicone oil, inhibitor and diluent are mixed and dispersed to obtain a second base material; finally, tackifier and latent platinum catalyst are added. The single-component organic silicone hot bonding adhesive prepared by the application forms a hot bonding adhesive prepreg after initial curing, and has extremely low peeling force at normal temperature, is easy to peel off from a release film during use, and the adhesive surface is still flat and undamaged when the adhesive surface is pressed against the bonding surface. After the prepreg is hot-pressed during use, the cross-linking is complete, the bonding with the base material is tight, the peeling force is high, and the high strength required for long-term use can be achieved.

The invention relates to a high-viscosity polymer coating and a preparation and use method thereof, and belongs to the field of polymer coatings, the coating comprises the following components: 60-80 parts of polymer resin, 15-25 parts of a waterproof filler, 3-8 parts of a waterproof additive, 5-10 parts of a diluent and 2-6 parts of a curing agent, high-solid-content resin is adopted, the addition of the diluent is reduced, and the mass ratio of a film-forming substance is greater than or equal to 85%; the preparation method comprises the steps of filler modification, raw material mixing, curing and the like. The application method sequentially comprises the steps of base layer cleaning, galling treatment, special prime coat brushing, carcass reinforcing material paving and surface coat brushing. The film forming compactness is improved through formula optimization, the adhesive force of the coating and a base layer is enhanced by combining base layer pretreatment and a matched construction technology, the phenomena of peeling and stripping / hollowing are effectively avoided, and the waterproof coating is excellent in waterproof performance, long in service life and suitable for waterproof engineering in the fields of buildings, building materials and the like.