116results about How to "Moderate flexibility" patented technology

The present invention relates to a high refraction and high adhesion large power LED packaging organosilicon material and a chemical synthesis method thereof. The organosilicon packaging material is prepared by carrying out mixing matching on a component A and a component B according to a mass ratio of 1:1, wherein the component A comprises vinyl phenyl polysiloxane, vinyl phenyl silicone oil, a platinum-containing polysiloxane catalyst and a tackifier, the component B comprises hydrogen-containing phenyl polysiloxane, dihydrideterminated phenyl polysiloxane, vinyl phenyl polysiloxane and an inhibitor, the tackifier is prepared by carrying out addition on isocyanate, methoxy silane and epoxy silane, and provides strong adhesion for PPA and a silver surface, the curing agent is prepared by compounding hydrogen-containing phenyl polysiloxane and dihydrideterminated phenyl polysiloxane, and a compounding mass ratio is preferably 4:1-2, such that the packaging material has moderate hardness and flexibility after curing so as to effectively solve contradiction of strength and cracking of the cured adhesive. With the present invention, the organosilicon packaging material with characteristics of refraction of 1.54, suitability for industrialization and fully meeting of large power LED packaging requirements can be obtained.

The invention provides a casting polypropylene (CPP) membrane for paper packaging. The membrane is characterized by comprising a corona layer, an intermediate layer and an inner layer, wherein the corona layer comprises 98 to 99.5 weight percent of terpolymerization polypropylene and 0.5 to 2 weight percent of slip agent; the intermediate layer is homo-polymerization polypropylene; and the inner layer comprises 98 to 99.4 weight percent of binary polymerization polypropylene and 0.5 to 2 weight percent of slip agent. The invention also provides a preparation method of the membrane. Both surfaces of the CPP membrane for paper have high heat-seal performance, and high printing adaptability and moderate flexibility.

The invention relates to an aqueous bi-component coating of a vehicle rubber and plastic sealing strip and a preparation method thereof. A component A takes aqueous polyurethane as matrix resin, and a component B is a cross-linking agent. The component A contains the following components in percentage by weight: 26-55 percent of aliphatic aqueous polyurethane dispersoid, 0-5 percent of polyamide paraffin slurry, 0-20 percent of aqueous ethylene paraffin liquid, 0-12 percent of aqueous resin containing active functional group, 1-10 percent of functional material, 5-10 percent of slipping agent, 0.1-2 percent of stuffing, 0-3 percent of pigment slurry, 1.5-6 percent of special assistant and 15-45 percent of solvent, and the component B contains the following components in percentage by weight: 70-100 percent of hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate and 0-30 percent of diethylene glycol butylether acetate. The invention has the advantages that after thecross-linking reaction is carried out on the aqueous resin composition and the cross-linking agent, the aqueous bi-component coating has excellent adhesiveness and meets the adhering requirements on treated rubber and plastic surfaces, has superstrong abrasive resistance and moderate flexibility, can enhance the slipping performance and the abrasive resistance with glass, resists high temperature, does not deform or separate out and has permanent slipping effect.

The invention provides a method for preparing a dry adhesive in order that the existing wet adhesive has the disadvantages that the wet adhesive is prone to deterioration, pollution, self-adhesion and non-reusability after being torn open. Based on the research into the structural characteristics of micron-level and nano-level foot hair of a gecko in the nature, micron-level and nano-level fiber arrays can be molded and drawn in a way that the fiber arrays are molded successively for twice, thus obtaining the micron-level and nano-level structure of the bio-mimetic gecko hair, which is characterized by powerful adhesion. The method of the invention comprises the following steps: preparing a micron-level silicon mother stamp; preparing a micron-level mold; preparing micron-level fiber arrays; preparing a nano-level silicon mother stamp; preparing a nano-level mold; and preparing nano-level fiber arrays. The method of the invention is capable of preparing the micron-level and nano-level structure with the parameters thereof being close to those of the foot hair of the gecko in the nature; and the prepared powerful dry adhesive is capable of being fitted with various surfaces and easily detached in an active manner.

The invention discloses a preparation method for an inverted LED white-light chip of chip scale package, and the method comprises the following steps: temporarily fixing an UV solidifying adhesive tape (2-1) on the upper surface of a die bonding positioning light cover (1); setting flip chips (3) on the upper surface of the UV solidified adhesive tape (2-1) according to the position of the die bonding positioning light cover (1); employing a fluorescent glue film (4) to cover the flip chips (3); carrying out vacuumizing and heating, and enabling the fluorescent glue film (4) to be solidified and packaged on the flip chips (3); carrying out cutting along gaps among the all packaged flip chips (3); removing the die bonding positioning light cover (1); carrying out UV irradiation and enabling the UV solidified adhesive tape (2-1) to be solidified, and obtaining the inverted LED white-light chip (5) of chip scale package. The method simplifies the technological flow, avoids glue mixing and dispensing in the original technology, improves the production efficiency and yield, and greatly reduces the production cost. The method completely avoids the sinking of phosphor, enables the batch stability of the inverted LED white-light chips (5) to be high, and enabling the color temperature of the inverted LED white-light chips (5) to be consistent.

It is an object of the present invention to provide a sealing apparatus having high sealing performance, entailing a low cost, and satisfactory in assembly characteristics. The sealing apparatus is a differential pressure-responsive sealing apparatus which is inserted between seal grooves formed in the side surfaces of outlet flange portions of adjacent combustor transition pipes to seal clearance between the side surfaces, comprising: a minimum required number of seal pieces connected in the longitudinal direction for imparting flexibility, the seal piece comprising a heat resistant, wear resistant material, and having a pair of sealing ridges each having an arcuate surface contacting the wall surface of each seal groove.

The present invention provides an acrylic resin laminated film comprising a soft layer formed of an acrylic resin incorporated with rubber particles and having a flexural modulus of about 1,300 MPa or less, and a hard layer formed of an acrylic resin having a flexural modulus of about 1,800 MPa or more on at least one side of the soft layer, wherein the hard layer has a thickness of about 0.1 to about 30 mum and a ratio of the thickness of the hard layer to the overall thickness of the laminated film is about 50% or less. This acrylic resin laminated film has moderate surface hardness and flexibility and hence is capable of providing for a molding with less whitening when subjected to a molding or forming process including bending or stretching.

The invention discloses a self-repairing solid-state hybrid dynamic polymer. The self-repairing solid-state hybrid dynamic polymer contains sulfydryl-Michael addition bond dynamic covalent crosslinking and supermolecular hydrogen bond interaction, wherein the sulfydryl-Michael addition bond dynamic covalent crosslinking reaches above a gel point in at least one crosslinking network; sulfydryl-Michael addition bonds are obtained through sulfydryl-Michael addition reaction between sulfydryl groups and electron-deficient conjugate alkenes/enynes; the supermolecular hydrogen bond interaction contains hydrogen bond interaction involving at least one from side hydrogen bond groups, backbone hydrogen bond groups and other end hydrogen bond groups; with dynamic reversibility, the sulfydryl-Michaeladdition bonds and the supermolecular hydrogen bonds endow the self-repairing solid-state hybrid dynamic polymer with good plasticity, self-repairability, repeatability, reusability and recoverability and ensure that the self-repairing solid-state hybrid dynamic polymer can be widely applied to self-repairing materials, flexible materials, shape memory materials, energy storage device materials and the like.

The invention relates to water paint, in particular to two-component waterborne polyurethane finish paint composition and primer composition matched paint and preparation methods thereof, and providestwo-component waterborne polyurethane finish paint composition and primer composition and preparation methods thereof in order to solve the problem that a paint film formed by the conventional waterborne floor paint is poor in mechanical strength and poor in medium resistance. The finish paint composition is prepared from a main agent and a curing agent, wherein the main agent is prepared from ahydroxy polyacrylate-containing dispersion, a waterborne elastic polyurethane dispersion, an alcohol ether solvent, a wetting dispersant, a defoamer, matting powder, a thickener, a liquid flame retardant, a mould inhibitor, deionized water, an anti-settling agent, a wetting agent, wax emulsion and a leveling agent; the curing agent is prepared from water-dispersed polyisocyanate and a high-boiling-point ether-ester solvent. By means of matched construction of the two-component waterborne polyurethane finish paint composition and primer composition, a paint film is excellent in adhesion, flexible and fire-retardant and is applicable to decoration and protection of PVC floor cloth of oversize vehicles and dining cars and floors of stadiums.

The invention relates to an improvement for a fire-resistant cable. The invention is characterized in that: an outer refractory insulating layer of a conductor is high temperature extruded siliceous compounds with a thickness of 0.05 to 1.0 millimeter, and an outer protective layer is a refractory fiber braid ply. Compared with the prior fire-resistant cable, the fire-resistant cable can be produced with long length; the production process is simple; the outside diameter of the cable is small; the occupied space of laying is small; the twisting property is moderate; recovery and separation of waste cables are easy, and recovery materials can be recycled and are pollution-free; refractory insulating raw material resources are numerous and the cost of the refractory insulating raw material resources is low, thereby the cost of fire-proof insulation of the cable can be reduced and is respectively reduced by 70 percent, 40 percent and 50 percent compared with mineral insulation, mica insulation and silicon rubber insulation; the waterproof, oil proof and radioresistant performances are superior to the prior fire-resistant cable; the refractoriness and the thermotolerant level are high; the fire-resistant cable can be operated under the environment of 1000 DEG C over a long period of time; the bend radius is 20 times or so of the cable diameter. At least one intermediate layer of the silicon refractory insulating layer is made of silicon dioxide, and an inner layer and an outer layer on both sides are made of silicon compounds different from the silicon dioxide or silicon dioxide with different crystalline structures, thereby light signals can be also transmitted and then the fire-resistant cable simultaneously has the function of photocommunication.

The invention specifically relates to water-based lotus-leaf-structured hydrophobic over-printing varnish for wallpaper and a preparation method of the over-printing varnish, and belongs to the technical field of ink. The technical problem to be solved is to provide an over-printing varnish by using which the surface of a wallpaper product can be smooth, bright and wear-proof and the lotus leaf type waterproof and moisture-roof effects can be realized, and a preparation method of the over-printing varnish. In order to solving the technical problem, the technical scheme adopted is as follows: the water-based lotus-leaf-structured hydrophobic over-printing varnish for the wallpaper is prepared from raw materials including a modified organic silicon polymer emulsion, a non-film-forming acrylate emulsion, an styrene-acrylic emulsion, neutralizing amine, propylene glycol, a water-based coalescing agent, a water-based leveling wetting agent, a mineral defoamer, a water-based nanoscale organosilicon waterproofing agent, a waterborne polyurethane thickening agent, deionized water and an organic silicon defoamer; the raw materials are stirred and mixed in a specific order to form the over-printing varnish.

The invention provides organic and inorganic compound waterborne paint for exterior walls and a preparation method thereof. The paint comprises waterborne synthetic resin, an inorganic cementitious material, a stabilizing agent, an auxiliary agent, a pigment and filler, and water, wherein the waterborne synthetic resin is pure acrylic emulsion modified by ultraviolet crosslinking, the inorganic cementitious material is a mixer of silicate and silica sol, and the stabilizing agent is siloxane. The organic and inorganic compound waterborne paint for exterior walls has good film forming effects, appropriate flexibility, extremely good adhesive force for surface of an object, good stability, as well as extremely good weatherability, wear resistance, and moisture and heat resistance; and the paint can satisfy demands of multiple respects.

The invention discloses a corrugated guardrail plate comprising a baseplate fixedly connected with an obstruction block or a standing column, wherein corrugated plates respectively extend out of two sides of the baseplate; the baseplate is integrated with the corrugated plates; the corrugated plates protrude to the same side of the plate face of the baseplate and exceed the plate face of the baseplate; a smooth transition is adopted between the baseplate and each corrugated plate; both the baseplate and the corrugated plates extend in the length direction of the guardrail plate and are thermoplastic composite plates; and each thermoplastic composite plate comprises a reinforcing frame wrapped in a thermoplastic material layer. Aiming to overcome the defects of high probability of corrosion, high rigidity and poor collision energy absorption of a steel guardrail plate, small elastic modulus, large size and high cost of an all-plastic guardrail plate, and complex manufacturing technology and worse collision energy absorption of a plastic-steel guardrail plate, the invention provides the corrugated guardrail plate, which has the advantages of corrosion resistance and appropriately matched rigidity and flexibility and can reduce harm to a vehicle and personnel to the greatest extent.

The present invention relates to an application tape, which has a function of improving an application workability when a protective pressure-sensitive adhesive sheet is applied to an adherend, in which the application tape has a surface that has a coefficient of static friction for a PET film of 0.05-1.0 in the case where the PET film is slid on the application tape having a size of 30 mm×30 mm under a condition of a load of 100 g and a rate of 100 mm/min, and the application tape has a Young's modulus of 300 MPa or lower.

The invention provides a method for preparing a flexible polyvinyl alcohol hydrogel cold storing bag. The method for preparing the flexible polyvinyl alcohol hydrogel cold storing bag comprises the steps of cross-linking polyvinyl alcohol with borax, and adding a glycerin softening agent; or cross-linking polyvinyl alcohol with borax, and adding a glycerin softening agent to prepare flexible polyvinyl alcohol hydrogel with high water content. The flexible polyvinyl alcohol hydrogel can be packaged in a polyvinyl chloride or polyethylene plastic bag under vacuum to form the flexible polyvinyl alcohol hydrogel cold storing bag.

The invention relates to the field of lithium ion batteries, in particular to a nanoparticle modified cross-linked polymer, a polymer electrolyte, a preparation method and application thereof. The cross-linked polymer comprises a cross-linked structure provided by a cross-linking agent and a copolymer chain connected to the cross-linked structure. The copolymer chain is provided by a cross-linkable copolymer containing a structural unit shown as formula (1), a structural unit shown as formula (2) and a structural unit shown as formula (3), wherein the cross-linkable copolymer is connected to the cross-linking agent by at least part of the structural unit shown as formula (3) so as to provide the copolymer chain. The cross-linked polymer also includes a nanoparticle coupling structure provided by silane coupling agent modified inorganic nanoparticles. The polymer electrolyte provided by the invention has high ionic conductivity, low crystallinity and appropriate flexibility. The formula(1), formula (2) and formula (3) are shown as the specification.

An applicator includes a squeezer for pushing out a content liquid to an applicator part, and the shape of a content liquid delivering port of the applicator part is formed to be oval or rectangular while the minor axis and major axis on the delivery port side are specified to be 0.5 to 2 mm and 2 to 8 mm, respectively. In this applicator, large-sized particles can be delivered by enlargement of the bore inside the applicator part. Further, formation of an oval delivering port allows for drawing fine lines in the minor axis direction and thick lines in the major axis direction. Moreover, provision of small-diametric projections at the front end of applicator, enables drawing of long lines and retaining of the liquid cosmetic stored between projections.