12results about How to "Enhance haze" patented technology

The invention discloses a PET protective film of a flexible electronic device and a preparation method thereof, and the PET protective film obtains two opposite properties in two vertical directions: the PET protective film has high HCMR in one direction, can represent the folding performance, and minimizes the crease depth; the other direction has high tensile Young's modulus which can represent self-supporting property and hardness and is one of the most important properties of a protective film in a flexible electronic device. In addition, other required properties, such as total light transmittance, haze, thermal shrinkage and the like, of the PET protective film of the flexible electronic device are similar to or slightly improved compared with those of the prior art. In order to obtain an extreme anisotropic PET film, the invention achieves maximum unidirectional orientation through stretching in one direction, and eliminates residual strain but maintains unidirectional orientation of molecular chains through an annealing process, which technology achieves good thermal shrinkage properties.

The invention discloses a CPP film, which comprises a heat sealing layer and a composite layer, and the heat sealing layer is prepared from the following first raw materials in percentage by mass: 58-82% of polypropylene random copolymer and 10-30% of homo-polypropylene; and a second raw material for forming the composite layer comprises 95-100% of homo-polypropylene and 0-5% of a silicon dioxide anti-blocking agent. The CPP film obtained by the invention has good peel strength, light transmittance and haze, and has a uniform whitening effect after one-sealing and two-sealing.

The invention belongs to the technical field of high polymer material synthesis and preparation, and particularly relates to a preparation method of MBS (methyl methacrylate-butadiene-styrene) resin, which comprises the following steps: by taking styrene, acrylate monomers and toughened rubber particles as raw materials, under the combined action of an antioxidant, an initiator and a chain transfer agent, optimizing the technical process and adjusting the technical parameters, thereby obtaining the MBS resin. Three-stage key process steps of internal circulation prepolymerization, polymerization in a second-stage reactor and grafting in a static mixer are set, and the feeding proportion of reaction materials, catalytic materials and the like, and the reaction temperature, the stirring speed, the retention time, the solid content proportion and the like of each process step are accurately controlled. The prepared MBS resin is pure, low in odor, uniform in rubber particle distribution, adjustable in rubber content, high in grafting rate, good in transparency, low in haze and good in impact resistance. Compared with a traditional emulsion polymerization method, the preparation method has the advantages that the technological process is shortened, the operation stability is good, the investment and production cost is reduced, the environmental pollution is reduced, and the preparation method has good market prospects and application and popularization values.

This application discloses an optical adhesive, its preparation method, an optical adhesive film, and a display device, belonging to the field of optical adhesive technology. By compounding a modified acrylate copolymer with a polyurethane acrylate oligomer in the raw materials of the optical adhesive, a highly transparent resin system can be formed. The modified acrylate copolymer is a copolymer pre-formed from at least one acrylate derivative. Compared to ordinary acrylate monomers, the modified acrylate copolymer possesses high refractive index and low light scattering characteristics, effectively improving light transmittance. Furthermore, this highly transparent resin system achieves good light transmittance without relying on nanoparticles, avoiding the problem of nanoparticle agglomeration, thereby improving the haze of the optical adhesive layer obtained from the optical adhesive.

The present application relates to a kind of transparent flame-retardant polycarbonate compositions and its preparation method and application, component includes: bisphenol A type polycarbonate, carbodiimide, high branched polycarbonate, flame-retardant ionic liquid, lubricant, antioxidant.The polycarbonate composition of the present application simultaneously reaches excellent light transmittance and haze, with good mechanical and flame-retardant properties.

The application belongs to the technical field of high polymer materials, and particularly relates to a heat-resistant blister packaging box and a preparation method thereof. According to weight parts, the heat-resistant blister packaging box comprises the following raw materials: 100 parts of polylactic acid, 4-8 parts of heat-resistant stabilizer, 1-3 parts of nucleating agent, 0.5-1 parts of chain-extending compatibilizer, 0.1-0.5 parts of antioxidant, and 0.1-0.3 parts of release agent. The application designs a multifunctional heat-resistant stabilizer with an aromatic imide-sulfone-siloxane structure, and constructs a synergistic crystallization system with a phenyl zinc phosphonate nucleating agent, and cooperates with a segmented temperature control rapid heat setting process. The heat distortion temperature of the obtained blister packaging box can reach 93.1 DEG C, the light transmittance is kept above 89.5%, the haze is below 3.5%, the forming cycle is shortened to 6-10 seconds, and there is no small molecule migration risk, so that the industrial production needs of the heat-resistant transparent packaging for food contact are met.

The application relates to the field of new packaging materials, and provides a composite film for fresh-keeping of green leaf vegetables and a preparation method thereof, main raw materials of the composite film including a base material, citric acid, glacial acetic acid and nicotinamide; the base material is a mixture of chitosan and polyvinyl alcohol; the preparation method is that chitosan and polyvinyl alcohol are dissolved and mixed, then a nicotinamide solution is added, stirring and ultrasonic treatment are conducted to uniformly distribute the components, and finally a flow casting process is adopted to form a film. The composite film can effectively delay oxidation and corruption of green leaf vegetables, and significantly prolong the shelf life of the green leaf vegetables. The composite film has good mechanical properties and flexibility, and is suitable for various fresh-keeping applications. The preparation process is simple, easy for large-scale production, the material is environment-friendly and biodegradable, and the composite film has a wide application prospect.

The invention relates to the technical field of adhesive tape production, in particular to an optical adhesive tape with optical radiation resistance and high creep restorability and a preparation method of the optical adhesive tape. The pressure-sensitive adhesive layer is prepared by adopting the acrylate pressure-sensitive adhesive with light radiation resistance, yellowing resistance, high creep restorability, high adhesive property and low adhesive overflow and the tackifying resin and selecting polyisocyanate, an epoxy curing agent or a metal salt curing agent as a curing agent; therefore, the pressure-sensitive adhesive layer has excellent optical properties, high creep restorability and strong bonding properties under high temperature, high humidity and intense radiation. The optical adhesive tape prepared by the preparation method disclosed by the invention is continuously irradiated for 1000h under three harsh conditions of irradiance 2.4 W / m < 2 > / nm (at the wavelength of 420nm), high radiation at a high temperature of 60 DEG C, 90% RH and high humidity, still keeps good optical properties such as yellowness, transmissivity and haze, has high adhesive property, and does not generate adhesive overflow; and when the strain of 400% at 65 DEG C is kept for 60 min, and the product is naturally cooled to the room temperature of 25 DEG C after the stress is removed, the creep recovery rate can reach 65% or above, so that the excellent impact resistance of the product is ensured.

A UV-curable silicone composition includes (A) an organopolysiloxane containing at least two alkenyl groups bonded to silicon atom; (B) a linear organohydrogenpolysiloxane having at least one Si-H bond in a side chain and having three of more Si-H bonds in total; (C) a siloxane compound having at least two Si-H bonds and having one hydrolyzable group bonded to a siloxane skeleton via a heteroatom-containing structure; and (D) a platinum catalyst, the UV-curable silicone composition being such that the total of the Si-H bonds contained in the components (B) and (C) is 0.1 to 2.0 equivalents relative to 1 equivalent of the alkenyl groups in the component (A), and the ratio of the number of Si-H bonds derived from the component (C) to the number of Si-H bonds in the whole of the composition is 0.2 or more. The silicone composition provides an adhesive that has excellent adhesive characteristics, for example, pot life, curability, adhesion, and reliability.

The utility model discloses a vacuum sandwich type display glass surface treatment device which comprises a cleaning equipment body, a conveying roller set is installed on the cleaning equipment body, supports are fixed to two side plates of the cleaning equipment body, spraying liquid pipes are fixed to the supports, a plurality of atomizing nozzles are arranged below the spraying liquid pipes, and a flow dividing mechanism is further arranged below the supports. The flow dividing mechanism comprises a flow dividing box, the atomization nozzles are located in the flow dividing box at intervals, and flow dividing holes are evenly formed in the bottom of the flow dividing box; a cover plate is arranged at the top of the shunting box; the etching liquid is sprayed out through the atomizing spray head, the sprayed atomized etching liquid is shunted through the plurality of uniform shunting holes and then is supplied to the surface of the display glass to be uniformly atomized and etched, so that the hazy feeling is enhanced, and the precise surface treatment is realized; the cover plate is arranged to seal the upper part of the shunting box, so that the sprayed atomized etching liquid is uniformly dispersed under the pressure in the shunting box and is shunted and flows out through the uniform shunting holes; atomized etching liquid is prevented from flowing in four directions.

This invention discloses a polyester masterbatch and its preparation method. The method includes: adding terephthalic acid, ethylene glycol, 3-vinyltriethoxysilane, and antimony acetate to an esterification reactor for esterification to obtain an esterification product; transferring the esterification product to a copolymerization reactor and performing a polycondensation reaction under controlled pH conditions to copolymerize silicon-containing monomers into the polyester molecular chain; then transferring the melt to a hydrolysis reactor and introducing high-temperature steam for hydrolysis and polycondensation to generate nano-silica particles with a particle size of 20-80 nm in situ, which are uniformly dispersed in the polyester matrix; finally, extruding, cooling, and pelletizing to obtain the polyester masterbatch. This invention achieves in-situ introduction and hydrolysis of silicon oxide precursors containing copolymerizable functional groups into the polyester backbone, significantly improving the dispersion uniformity of nano-silica and enhancing the haze, stiffness, and anti-stick properties of the film, making it suitable for the industrial production of functional polyester materials.