80results about How to "Good barrier effect" patented technology

A polyolefin film which includes at least one layer containing polyolefin and cycloolefin polymer (COP), where the cycloolefin polymer is amorphous and has a mean molecular weight Mw in the range from 200 to 100,000, and this mean molecular weight Mw of the cycloolefin polymer is at most 50% of the mean molecular weight Mw of the polyolefin, and the cycloolefin polymer is a homopolymer or a copolymer containing at most 20% by weight of comonomer.

A multi-layer film comprising a layer (a) and a layer (c), each layer comprising at least one propylene copolymer in a quantity of at least 30% by weight and at least one propylene homopolymer in a quantity of at least 20% by weight, in each case relative to the total quantity of the layer (a) or (c), at least one inner layer (b) based on at least one homo- and/or co-polyamide having isophorondiamine units as polyamide components, and further comprising adhesion promoter layers (d) and (e) arranged between the layers (a) and (b) and between the layers (b) and (c), respectively, each adhesion promoting layer being based on at least one modified thermoplastic olefin homopolymer or olefin copolymer; a sealing sheet comprising such a multi-layer film, and the use of such a multi-layer film for covering roofs.

The invention provides a sleeve of a drainage tube. The sleeve of the drainage tube comprises the drainage tube and a biodegradable outer tube which is sleeved outside the drainage tube. A drainage relief area is formed between the drainage tube and the biodegradable outer tube. Through holes are formed in the wall of the biodegradable outer tube and are communicated with the drainage tube through the drainage relief area, and the diameter of the through holes is smaller than the drainage bore diameter of the drainage tube. Compared with a sleeve-type drainage tube, the sleeve of the drainage tube has the advantages that in the process of negative pressure drainage, liquid enters a support firstly, passes through the relief area and then enters the drainage tube, the diameter of the through holes in the drainage relief area is smaller than the drainage bore diameter of the drainage tube, a good blocking function can be played, blocking generated due to the fact that human tissue is forced to be sucked into the drainage tube is avoided, and accordingly smoothness of the negative pressure drainage can be kept.

The invention provides composition with acne removing and repairing effects. The composition is prepared from components in a weight ratio as follows: 0.1%-5.0% of hyaluronic acid, 5.0%-30.0% of plant sucrose extract, 1.5%-9.0% of an acne mark fading compound and 60.0%-93.4% of substrate auxiliary materials, wherein the plant sucrose extract is prepared from eight plant conditioners including herba portulacae, lithospermum euchromon royle, folium artemisiae argyi, hypericum perforatum, white willow bark, radix salviae miltiorrhizae, radix scutellariae and witch hazel in certain ratio, the eight plant conditioners are mixed in a sucrose solution, a mixed solution is concentrated, and the extract is obtained; the acne mark fading compound is prepared from nicotinamide, vitamin C ethyl ether and salicylic acid in certain ratio through mixing and matching. According to the composition and the preparation method, the problem of acne is solved quickly on the basis of the deep mechanism of acne generation, damaged acne skin is deeply repaired and nourished, acne marks and pockmarks are effectively faded, so that the acne skin rapidly restores original color and elasticity, and the composition is novel, safe, efficient and lasting active acne removing composition. Furthermore, with addition of the related substrate auxiliary materials, acne removing products in multiple dosage forms can be prepared from the composition, and the dosage forms include but are not limited to an aqueous solution, a facial mask, cleanser, emulsion, cream, gel and the like.

The invention provides a protective paint for retarding or preventing migration of conductive silver ions. The protective paint is prepared from the following raw materials by weight part: 7-12 parts of sericite powder, 0-5 parts of graphite powder, 80-85 powder of polyester resin solution and 2-8 parts of dimethyl solvent. The invention also provides a preparation method and application of the protective paint. The protective paint has a variety of synergetic effects, can retard or prevent migration of conductive silver ions, prevents product performance from being reduced or lost due to resistance variation caused by the migration of silver ions, and is particularly suitable for occasions such as conductive silver paste or silver wires, silver electrodes, silver contacts and the like. In addition, metal or alloy materials for a conductive purpose besides metallic silver can also be used as suitable objects to be protected to achieve the same purpose.

The composite thin-wall aluminium foil hose includes composite aluminium foil inner layer, adhesive layer and plastic outer layer. The composite aluminium foil inner layer is of wound and welded structure, and the adhesive layer and plastic outer layer is of coextruded structure. Compared with available seamless composite plastic hose, the said composite hose of the present invention with aluminium foil as blocking layer material has improved blocking effect; and compared with available seamy aluminum-plastic composite hose, the said composite hose has simpler production process and seamless surface being beautiful and easy to print.

The invention provides a green recyclable co-extruded packaging film and a preparation method thereof. The green recyclable co-extruded packaging film adopts the layered structure that an inner layer serves as a heat-seal layer consisting of LDPE and MLLDPE which are co-mixed, an intermediate layer serves as an obstructing layer consisting of MLLDPE and PP which are co-mixed, and a printing layer is arranged outside the intermediate layer and made from PP. As a nontoxic environment-friendly material serves as the raw material, MLLDPE replaces a toxic adhesive, and the compatibility of MLLDPE and LDPE, as well as MLLDPE and PP, is fully utilized, the packaging film has no residual solvent and has relatively good effects in obstructing oxygen and water vapor. The packaging film is recyclable and regenerative, and the recovery rate can reach 95% or above. The green recyclable co-extruded packaging film is environment-friendly, energy-saving and emission-reducing, lowers the cost, is safe and sanitary and is a green packaging film product which can protect the human mental and physical health.

The invention discloses a high-strength stretch-proof flame-retardant cable material. The high-strength stretch-proof flame-retardant cable material comprises the following raw materials in parts by weight: 36-39 parts of phenolic resin, 34-37 parts of modified montmorillonite compound nylon/polypropylene composite materials, 18-22 parts of epoxy resin, 1.8-2.2 parts of trioctyltrimellitate, 2-5 parts of a vulcanizing agent BPO, 1-1.3 parts of an accelerant MZ, 4-5 parts of calcite powder, 3-6 parts of diatomite, 3-5 parts of talcum powder, 1.4-1.7 parts of a flame retardant TPP, 2.2-2.5 parts of an aluminate coupling agent, 0.7-1 part of an antioxidant 1035 and 1.5-3 parts of an anti-ageing agent MB. The high-strength stretch-proof flame-retardant cable material is high in strength, good in stretching resistance, excellent in flame resistance and suitable for being used under bad conditions of a high temperature condition, an inflammable condition, a frequent mechanical friction condition, and the like.

The invention provides a liquid crystal display device which comprises a liquid crystal panel. The liquid crystal panel comprises a quantum dot layer and a liquid crystal layer arranged below the quantum dot layer. The liquid crystal display device also comprises a backlight module arranged below the liquid crystal layer and a glass substrate arranged above the quantum dot layer; the backlight module comprises a backlight source and other optical assemblies; the glass substrate comprises a coloring material and a common glass material; the coloring material is used for blocking light rays, thewavelengths of which are smaller than 420nm, in environmental light; and the ratio of the coloring material and the common glass material is between 0.04 and 0.2. According to the liquid crystal display device provided by the invention, under the circumference of irradiation by the environmental light, the liquid crystal panel can filter ultraviolet light and part of blue rays in the environmental light, and is high in pass rate for light rays of other wavelengths. The whole display picture still has relatively high contrast and color purity, and the caused energy loss is small.

The present invention provides a photocrosslinked polysaccharide exhibiting low swelling and high in vivo degradability while maintaining appropriate strength. The polysaccharide pseudo-sponge is made by cross-linking reaction of photoreactive polysaccharide obtained by introducing photoreactive groups into the polysaccharide, and exhibits low swelling and low blue dextran dye affinity, which respectively satisfy the following Properties (I) and (II): (I) The swelling ratio does not exceed 125%, which is obtained by immersing a test sample with a thickness of 1mm, a length of 10mm, and a width of 10mm at room temperature and a solvent content of 96wt% in the injection according to the following formula Calculation of the value measured in water for 1 hour: swelling ratio = {(S2-S1)/S1}×100 where S1 represents the area of ​​the test sample before immersion, S2 is the area of ​​the test sample after immersion, and the area is determined by the area of ​​the test sample length and width calculation; and (II) the absorption at 620nm wavelength place is not more than 0.15, it is measured by the aqueous solution containing 0.67wt% polysaccharide, the aqueous solution of this polysaccharide is 1mm thick, 20mm long, 10mm wide, and solvent content is 96 wt% of the test sample was immersed in an aqueous solution containing 0.5 g/mL of blue dextran with a weight average molecular weight of 2,000,000, and then the test sample was washed with water and hydrolyzed to prepare it.

A high-isolating lamella hollow container used as fuel oil tank or packing bottle of agricultural chemical is prepared through preparing the isolating mother material from EVOH and compatibilizer (acrylic acid grafted polyethylene) and mixing with polyethylene. It has high isolation performance to hydrocarbon compounds and better mechanical performance.

The invention belongs to the field of electrochemical coatings, and particularly relates to an anti-wear and alkali-resistant ferrocene-zinc composite electroplating solution and an application thereof. The composite electroplating solution is 8-12g/L ferrocene which is added in a faintly acid zinc sulfate plating solution system. The ferrocene-zinc composite electroplating solution is compact insurface, good in wear resistance and corrosion resistance, and especially suitable for easy-to-wear alkali environment, and has a good application value in the field of steel structure protection in an industrial alkaline environment and the like.

The invention discloses a high-strength stretch-proof flame-retardant cable material. The high-strength stretch-proof flame-retardant cable material comprises raw materials in parts by weight as follows: 36-39 parts of phenol formaldehyde resin, 34-37 parts of modified montmorillonite compound nylon/polypropylene composite material, 18-22 parts of epoxy resin, 1.8-2.2 parts of trioctyl trimellitate, 2-5 parts of vulcanizing agent BPO (benzoyl peroxide), 1-1.3 parts of an accelerant MZ, 4-5 parts of calcite powder, 3-6 parts of diatomaceous earth, 3-5 parts of talcum powder, 1.4-1.7 parts of a fire retardant TPP, 2.2-2.5 parts of an aluminic acid ester coupling agent, 0.7-1 part of an antioxidant 1035 and 1.5-3 parts of an anti-aging agent MB. The high-strength stretch-proof flame-retardant cable material has high strength, good stretch resistance and excellent flame retardant property and is suitable for being used in severe conditions including high-temperature, inflammable and frequent mechanical friction conditions and the like.

The invention relates to a fireproof anti-corrosion coating material and a preparation method thereof. The fireproof anti-corrosion coating material can effectively solve the problems of poor water resistance, pollution resistance, heat resistance and corrosion resistance of an acrylate polymer emulsion in the prior art by introducing polysilsesquioxane, polysilane, TMPTA and graphene/nano-TiO2/spiral carbon fiber composite particles to modify the acrylate polymer skeleton, so that the prepared aqueous acrylate polymer emulsion has better water resistance, pollution resistance, heat resistanceand corrosion resistance and strong fireproof and anti-corrosion performance.

The invention relates to aqueous compositions comprising

• • a) at least one polymer PALK in the form of dispersed polymer particles, wherein the polymer PALK is obtainable by ring-opening metathesis polymerization of at least one cyclic olefin monomer, and
  • b) at least one polymer P2 in the form of dispersed polymer particles, wherein the polymer P2 comprises no olefinically unsaturated C—C-bond and has repeating units bearing at least one polar group.

The aqueous compositions are suitable in particular for producing sheetings and barrier coatings having a very good barrier action toward gases, such as air, oxygen, nitrogen, argon, carbon dioxide, and in particular toward oxygen and oxygenous gases, such as air. The sheetings and coatings also have very good mechanical properties, in particular a high elongation at break coupled with good tear strength.

The invention relates to a CNC online cleaning device. According to the technical scheme, the CNC online cleaning device is characterized by comprising a high-speed dust suction cavity arranged at theend, close to a machining bit tool, of a high-speed motor, a dust suction port arranged on one side of the machine bit tool, communicating with the high-speed dust suction cavity and used for suckingdust generated by the machining bit tool during operation, an anti-explosion dust suction machine communicating with the high-speed dust suction cavity, providing dust suction acting force for the dust suction port and used for collecting the dust, a locking assembly arranged at the end, far away from the dust suction port, of the high-speed dust suction cavity and used for connecting the high-speed dust suction cavity to the high-speed motor and a blocking assembly arranged on the periphery of the dust suction port and used for preventing the dust from being scattered outwards. The CNC online cleaning device achieves the purposes of sucking away dust scraps generated during machining, reducing the influence of the environment on the body health of staff and improving the production efficiency.

The invention relates to a fuel pipe and a preparation method of the fuel pipe. The fuel pipe comprises a first nitrile-butadiene rubber (NBR) layer, a tetrafluoroethylene hexafluoropropylene vinylidene fluoride (THV) fluoroplastics material layer, a second NBR layer, an aramid fiber layer and a chlorosulfonated polyethylene (CSM) rubber layer. By means of the fuel pipe and the preparation method of the fuel pipe, the THF fluoroplastics material is chosen as a fuel blocked layer of the fuel pipe, nitrile-butadiene rubber, aramid fibers, chlorosulfonated polyethylene rubber and the like are coordinated, the fuel pipe is enabled to play a good blocking role on the fuel, the fuel penetrating quality of the fuel pipe is improved remarkably, and the purpose of super-low fuel penetration is achieved.

The invention provides an epoxy natural rubber composite material. The epoxy natural rubber composite material is prepared from the following raw materials in parts by weight: 100 parts of emulsifiedepoxy natural rubber, 0.1 to 30 parts of zeolite molecular sieve, 0.1 to 10 parts of rare-earth oxide, 0.5 to 10 parts of ammonium hydroxide, 0.05 to 0.8 part of surfactant, 0.1 to 4 parts of coagulator, and 0.2 to 12 parts of vulcanization processing aid. The epoxy natural rubber composite material prepared by the invention has excellent aging resistance, low themogenesis performance and good fatigue resistance, and can be applied to the epoxy natural rubber products such as medical rubber products, soles, tires, rubber pipes and the like. The preparation method of the epoxy natural rubber composite material is simple in process, stable in product quality and easy in industrialized production.

The invention discloses a high-transparency easy-to-open barrier film which comprises a first PE film layer, a first bonding layer, a PEN film layer, a second bonding layer, a barrier layer, a third bonding layer, a PEI film layer, a fourth bonding layer and a second PE film layer. The first PE film layer is prepared from low-density polyethylene, metallocene linear low-density polyethylene, high-density polyethylene and a silicon-aluminum film opening agent in a mass ratio of (10-15): 5: 3: (1-3). The second PE film layer is composed of low-density polyethylene, medium-density polyethylene and a silicon-aluminum film anti-blocking agent in a mass ratio of 17: (1-3): (1-3). The silicon-aluminum film opening agents with different proportions are added into the first PE film layer and the second PE film layer, adhesion between the surfaces is avoided, and therefore the film has good transparency and easy opening performance, the middle layer is a blocking layer, a good blocking effect isachieved, and the use requirements of a packaging film are met in all aspects.

The invention relates to a polyurethane elastomer phononic crystal noise-reducing film and a preparation method thereof. The noise reducing film comprises at least four periodic components, each periodic component is composed of one polyurethane layer and one vibrator layer, wherein each vibrator layer is formed by coating a large amount of microbead vibrators by a polymer, and each microbead vibrator is formed by coating each metal microbead by a layer of soft elastomer; and the preparation method comprises the following steps: the microbead vibrators formed by coating the metal microbeads bythe soft elastomers and polymer pellets are uniformly mixed, the mixed material is subjected to melt extrusion by one extrusion unit, the polyurethane raw material is subjected to melt extrusion by another extrusion unit, the extrudate enters a confluence unit, the confluent material sequentially passes through m lamination units, partition, torsion and lamination are performed for n times in n torsion flow channels in each lamination unit to form the phononic crystals in which the vibrator layers and the polyurethane layers are alternately arranged. The preparation process of the noise reducing film provided by the invention is very simple, the production efficiency is high, large-scale production is easy to realize, and the noise reducing film has strong applicability, and can cover thesurface of a large target to realize a noise reducing function.