The invention relates to an organic silicon potting adhesive containing a POSS (polysilsesquioxane) group and a preparation method of the organic silicon potting adhesive. The organic silicon potting adhesive comprises a component A and a component B and is characterized in that the component A is formed by a POSS-phenyl organosilicon polymer and excessive hydrogen-terminated methyl phenyl polysiloxane which is not involved in the reaction, wherein the POSS-phenyl organosilicon polymer is formed by hydrosilylation to graft hydrogen-terminated methyl phenyl polysiloxane by taking polysiloxane cage octavinyl polysilsesquioxane as a main chain; the component B is methyl phenyl vinyl polysiloxane. By virtue of the phenyl of phenyl vinyl polysiloxane in the component A of the potting adhesive, the high refractive index of the material is ensured; by virtue of an introduced organic polysiloxane system, the heat resistance of the material is improved, the number of cross-linking points is increased and the refractive index of the material is increased; meanwhile, by virtue of phenyl polysiloxane matrix, the high refractive index of the material is ensured; the transparent organic silicon material with high heat resistance and high refractive index can be applied to encapsulation of HB-LED.

Organic silicon potting adhesive containing POSS group and preparation method of organic silicon potting adhesive

The invention provides an OLED displayer and a manufacturing method thereof. The OLED displayer comprises a substrate, an OLED device which is arranged on the substrate and a thin-film packaging layer which is arranged on the substrate and the OLED device and covers the OLED device. The thin-film packaging layer comprises at least two inorganic material passivation layers and at least one organic material buffer layer. The inorganic material passivation layers and the organic material buffer layers in the thin-film packaging layer are alternately arranged in a laminated way, and at least one organic material buffer layer in the thin-film packaging layer is an ultraviolet-resistant film layer containing inorganic nanoparticles so as to have the effect of resisting ultraviolet radiation and enhancing the mechanical property of the organic material buffer layer, and thus the ultraviolet-resistant and photoaging-resistant performance of the OLED displayer can be enhanced and the service life can be prolonged.

OLED displayer and manufacturing method thereof

The invention relates to a preparation method for a nano silicon dioxide modified organic silicon sealant for packaging of a light emitting diode (LED). As silane coupling agent modified nano silicon dioxide is added into chlorosilane hydrolysis and polycondensation system, the compatibility of the nano silicon dioxide and organic silicon resin is sharply improved; a small quantity of curing agent, catalyst and defoaming agent are added, the mixture is mixed uniformly and then is cured at room temperature so as to prepare the nano silicon dioxide modified organic silicon sealant. The preparation method is simple, has low cost, and can prepare a series of high refractive index and high transmittance packaging sealants for multiple LED electron components, and the operation conditions are easy to control.

Preparation method for nano silicon dioxide modified organic silicon sealant for packaging of light emitting diode (LED)

The invention relates to a sugarcane charcoal-based water and fertilizer double-controlled composite slow-release carrier and a preparation method thereof. The composite slow-release carrier comprises the following components in parts by weight: 4-35 parts of sugarcane charcoal, 0-5 parts of a temperature sensitive agent, 0-1.2 parts of a pH sensitive agent, 0.1-0.6 parts of a cross-linking agent, 0.1-0.4 parts of a surfactant, 0.2-0.5 parts of an initiator and 160-200 parts of water. The sugarcane charcoal raw material is renewable, the production cost is low, and operation process is simple. The sugarcane charcoal has abundant nutrient resources such as available nitrogen, phosphor and potassium, and has stable and recyclable comprehensive fertilizer effect; a pH value of the sugarcane charcoal can be adjusted in a scope of 6-11, and the sugarcane charcoal is suitable for acidic soil improvement of sugarcane fields. The provided environment-sensitive microgel-modified composite slow-release carrier can response by following with extraneous environment temperature and change of the pH value, a water/fertilizer integrated sustained and controlled release system is formed through a contraction/swelling process of a microgel high-molecular three-dimensional net structure, water and fertilizer utilization efficiency is fully increased, and an field large-scale application of an environment-friendly continuous fertilizer technology can be promoted.

Sugarcane charcoal-based water and fertilizer double-controlled composite slow-release carrier and preparation method thereof

The invention relates to a composite antibacterial material of graphene quantum dot and fibroin, preparation and application. The composite antibacterial material of graphene quantum dot and fibroin is characterized in that the mass ratio of the graphene quantum dot or doped graphene quantum dot to the fibroin is 1:1 to 1:10000; the doped graphene quantum dot is a non-metallic compound, a metallic compound or an organic compound, which contains a doping atom, has weak oxidization or reduction property, or is easy to coordinate; the concentration of a dopant is 0.01-10 mM; and the molecular weight of the fibroin is 1000-10000000 Da. The composite antibacterial material disclosed by the invention has the capability of greatly generating hydroxyl radicals having antibacterial capability under visible light or in a dark field; particularly, the composite material of B-doped graphene quantum dot and fibroin has excellent antibacterial capability; and thus, the composite antibacterial material used as an in-vivo antibacterial material or a wound suture material can be directly used in living bodies.

Composite antibacterial material of graphene quantum dot and fibroin, preparation and application

The invention discloses a preparation method for a graphene quantum dot wrapping zinc oxide core-shell structure quantum dot for a QD-LED. The method comprises the following steps: 1, adopting a modified Hummers method to prepare graphite oxide and adopting a hydrothermal method to prepare a graphene quantum dot; 2, adopting a one-step method (namely an in-situ polymerization method) to prepare and synthesize the graphene quantum dot wrapping zinc oxide core-shell structure quantum dot. Compared with the prior art, the preparation method is wide in material source, low in price, and simple and controllable in production technology, and can realize large-scale production; the obtained core-shell structure quantum dot is uniform in dispersion, small in size and grain diameter, and thinner in the shell layer; a PL emission peak is in 369 nm of the blue and ultraviolet light part, the photoluminescence peak is narrow, the intensity is high, and the quantum dot is expected to be applied to QD-LED display devices.

Preparation method for graphene quantum dot wrapping zinc oxide core-shell structure quantum dot for QD-LED

The invention relates to a preparation method of transparent organic silica glue for encapsulating nano SiO2 modified COB-LEDs. The method comprises the specific steps as follows: firstly, preparing surface treating agents (silane coupling agent solution) with certain concentration; adopting silane coupling agents to modify nano SiO2; and then, adding the modified nano SiO2 to the organic silica glue so as to obtain the organic silica packaging glue. The mass ratio of nano Si02 to the organic silica glue is (6.00 to 20.00) to 100. After being stirred for mixing the nano SiO2 and the organic silica glue, a small amount of curing agents and catalytic agents are added for evenly stirring and mixing so as to prepare the nano Si02 modified organic silica packaging glue. According to the invention, the thermal conductivity of the organic silica packaging glue prepared by the method can be improved by 5 to 23%, the refractive index can be improved by 0.1 to 3.3%, and the glue has good shaping performance. Compared with the traditional LED packaging, the cost can be reduced by about 30%. The glue is colourless and transparent, and can be widely used for fixing electron components, sealing electronic housings and plane light sources, and encapsulating various lamps.

Preparation method of transparent organic silica glue for encapsulating nano SiO2 modified COB-LEDs

The invention relates to a preparation method of a light artificial soil material for a green roof. The preparation method comprises the following specific steps of: synthesis of acrylic acid-acrylic amide water-absorption resin by a water solution method; and preparation of light artificial soil, wherein a waste macromolecule foam material and high-water-absorption resin are taken as host materials, the mass ratio of the resin to the foam material is 1:(40-68), and other ground substances, such as attapulgite, activated carbon, a slow release fertilizer and grits, are added into the host materials according to different ratios, thus obtaining the light artificial soil. Compared with the prior art, the light artificial soil material has the advantages of low cost, low carbon, environment protection, long service life, high water content and the like. The light artificial soil material prepared by the method is light in mass, and has wet density of only 588-800 kg/m which is a third to half of the wet density of garden soil and is less than the weight density (of about 900 kg/m ) of the conventional invented culture medium, thus meeting the load requirements of more roofs.

Preparation method of light artificial soil material for green roof

The invention relates to a preparation method of a transparent organic silica gel with a high refractive index for high brightness and large power COB-LED encapsulation, and belongs to the technical field of photoelectrical device encapsulation materials. The key points of the preparation method are that: phenyl vinyl resin (component A) and phenyl hydrogen-containing silicone oil (component B), which both have a high refractive index and are transparent, are synthesized firstly, then chloroplatinic acid or platinum complex is used as the catalyst, and finally the mixture of the component A and the component B is cured under a certain condition so as to obtain the transparent and high temperature resistant organic silicone encapsulating gel; wherein the mass ratio of the component A to the component B is (1-5):1. The preparation method comprises the following steps: mixing the component A and the component B, then adding a little amount of catalyst, or mixing the component B and the catalyst firstly, then adding a certain ratio of component A; fully mixing and blending the mixture, and curing under a certain condition so as to obtain the organic silicone encapsulation gel. The refractive index of the prepared organic silicone encapsulation gel is 1.5167 to 1.5577, the light transmittance at 450 nm is 95% or more, the thermal decomposition temperature at a nitrogen gas atmosphere can reach 404.63 DEG C, the hardness is 58 to 65, and the adhesive strength is 56.8 MPa.

Preparation method of transparent organic silica gel with high refractive index for high brightness and large power COB-LED encapsulation

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