43 results about "Polyolefin" patented technology

A composition for a polarization film including a polyolefin component including polypropylene and a polyethylene-polypropylene copolymer; and a dichroic dye.

The invention provides a wax-based binder for a compacting process in powder metallurgy as well as a preparation method and an application thereof. The binder consists of the following components by mass percent: 60 to 80 percent of solid paraffin, 3 to 10 percent of liquid paraffin, 1 to 10 percent of naphthalene, 2 to 9 percent of polyethylene vinyl acetate, 4 to 15 percent of polyolefin and 1 to 10 percent of stearic acid. The components of the binder are good in compatibility, the rheological property is good, the solvent degreasing rate is high, the retraction property is moderate, the degreasing blank is few in flaws, and the conformality is good; the binder also has the characteristics of cleanliness, low residue, little pollution and the like.

The invention provides an asphalt modified thermoplastic polyolefin water-proof coiled material and a preparation method thereof; the coiled material is characterized by consisting of an upper surface layer, a main body layer and a reinforcing layer; the upper surface layer is made from white or colored thermoplastic polyolefin with excellent ultraviolet radiation resistance, the main body layer is made from black asphalt modified thermoplastic polyolefin, and the reinforcing layer consists of a middle reinforcing layer and a surface lining layer which are arranged as required. The asphalt modified thermoplastic polyolefin water-proof coiled material has the advantages of good processing property, excellent mechanical property, high tension strength, good dimensional stability, strong puncture resistance, good ultraviolet radiation resistance, small specific gravity, capacity of realizing convenient seam suturing welding of the main body and recoverable tailing and excessive materials, and the like.

The present invention discloses an aqueous primer composition comprising: (A) an aqueous dispersion of a non-chlorine-based modified polyolefin comprising the dispersion of an unsaturated carboxylic acid- or acid anhydride-modified polyolefin (a), having a melting point of 120° C. or lower and a weight average molecular weight within the range of 50,000 to 150,000, in an aqueous medium; (B) a water-soluble or water-dispersible polyol resin; and (C) a pigment, wherein the solid content weight ratio of component (A) to component (B) is within the range of 20/80 to 85/15, and component (C) is contained within the range of 0.5 to 200 parts by weight based on 100 parts by weight of the total resin solid content in the composition; and a method for coating a plastic molded product using the aqueous primer composition.

The invention discloses a neutron-resistant radiation shield plate and a preparation method thereof. The neutron-resistant radiation shield plate comprises the following components in parts by weight: 55-94 parts of polyolefins resin, 4-43 parts of boron carbide powder, 0.5-1.5 parts of a coupling agent, 0.5-1 part of an anti-oxidant and 0.5-2 parts of lubricant. The preparation method of the neutron-resistant radiation shield plate comprises the following steps: 1) batching a composite material, wherein components are added into a high-speed batching stirrer, firstly mixture at a low speed is performed for 30 s, and then mixture at a high speed is performed for 120-180 s; 2) fundamentally pelletizing the composite material, wherein a premixed material is added into a double-screw extruder, and is subjected to smelting, extrusion, cooling, grain cutting and packing to obtain a composite material for the neutron-resistant radiation shield plate; 3) forming the plate, wherein the pelletized composite material is dried, is smelted and extruded by a single-screw extruding machine, is shaped by three-roll pressing, is stretched, drawn and cooled, and then is cut to obtain the neutron-resistant radiation shield plate.

The invention discloses a halogen-free flame retardant and a preparation method thereof and a flame-retardant polyolefin composition composed of the same. The structural formula of the halogen-free flame retardant is shown in the description, wherein the ratio of x to y to z is 1:(5-10):(1-5). The preparation method comprises the steps that melamine, phosphoric acid and piperazine are weighed and put into a high-speed mixer of which the top is provided with a liquid spray device to be stirred and mixed to be uniform, and a halogen-free flame retardant premixed material is obtained; the halogen-free flame retardant premixed material is subjected to a high-temperature dehydration condensation reaction, and the polyphosphoric acid-melamine-piperazine composite salt halogen-free flame retardant is obtained. The halogen-free flame retardant with the composite salt structure has the advantages that the halogen-free flame retardant is good in heat stability, high in phosphorus content and free of impurities such as halogens and inorganic salts, and the index of whiteness is larger than 90; few synthesizing process steps are needed, operation is simple and easy to carry out, the requirement on equipment is low, and the product yield reaches up to 80% or above; the flame-retardant polyolefin composition containing the halogen-free flame retardant has the good flame-retardant property, high water-resistant and heat-resistant properties and the excellent pigmenting property.

The invention relates to the field of nano materials and particularly relates to a mildew-resistant and antibacterial nano-silver decorative laminated board. The mildew-resistant and antibacterial nano-silver decorative laminated board is formed by a decorative veneer and a base material which are bonded by an adhesive layer, wherein the decorative veneer and the base material are dipped by nano aqueous solution; the adhesive layer contains nano-silver substances; the decorative veneer and the base material are made of technical wood; the nano-silver aqueous solution is formed by adopting deionized water as a solvent, adopting nano silver as solute to be dissolved into the deionized water, adopting acrylic resin as a complexing agent and a stabilizing agent to be dissolved into the deionized water, and adding a dispersing agent and a first reducing agent simultaneously; the concentration of nano silver in the adhesive is 75-150ppm; the mass content of flour in solution is 18-45%; environmental-friendly glue comprises the following materials in parts by weight: 40-80 parts of acrylic resin solution emulsion with the solid content being 40-55%, 20-40 parts of acrylic resin powder, 5-20 parts of EVA emulsion with the solid content being 40-60%, 1-4 parts of dibutyl phthalate and 7-13 parts of chlorinated polypropylene or polyolefin substrate adhesive-force promoter. The mildew-resistant and antibacterial nano-silver decorative laminated board has the advantages that the stability and the dispersibility are good and the mildew can be fully resisted.

Provided is a microporous polyolefin membrane which has excellent oxidation resistance and electrolyte injection performance and further has excellent permeability and strength balance. The multilayer, microporous polyolefin membrane has a first microporous layer containing polypropylene. The electrolyte injection performance is 20 seconds or less, at least one surface layer is the first microporous layer, and the PP distribution in the first microporous layer is uniform in the in-plane direction.

The invention relates to a water-producing natural cross-linking low-smoke halogen-free and flame-retardant POE (polyolefin elastomer) and a preparation method thereof. The POE comprises the following components in parts by weight: 80-90 parts of POE, 10-20 parts of polyolefine, 20-30 parts of calcined argil, 0.5-1 part of antiager, 0.1-1 part of peroxide initiator, 2-5 parts of silicane cross-linking agent, 0.1-1 part of cross-linking assistant, 2-10 parts of water-producing agent, 0.5-1 part of coupling agent, 5-10 parts of lubricant, 30-50 parts of processing oil and 80-100 parts of flame retardant. With the adoption of the water-producing cross-linking low-smoke halogen-free and flame-retardant POE and the preparation method thereof, the technical problem that silicane cross-linking cannot be conducted by the POE prepared in the prior art is overcome, and a water-producing natural cross-linking POE material with more excellent performance can be prepared, cables or accessories with excellent production performance can be produced, and the technical problems of production flow and energy waste can be solved.

This relates variously to techniques for comminuting polymeric foams, to techniques for preparing polymeric foams containing that comminuted foam, and to the resulting comminuted foam powder and polymeric foams. The procedures may be used on foams containing production contaminants such as polyolefins, paper, and foam skins and on other foams containing consumer contaminants such as wood, metal, leather, etc. The comminuted foam powder, with or without contaminants, preferably is screened or sifted to obtain a foam powder having a particle size of about 2 mm or less.

The invention provides a novel acrylic pressure-sensitive adhesive. The raw materials for preparing the novel acrylic pressure-sensitive adhesive at least comprise acrylic acid, acrylate, a solvent, an initiator and a plasticizer. The novel acrylic pressure-sensitive adhesive provided by the invention has a simple formula, is not added with additives such as an anti-aging agent, tackifying resin,and a softener, and has good adhesive property to most polar material surfaces or porous material surfaces, such as metals, cement, paper, wood, and ceramics. At the same time, the novel acrylic pressure-sensitive adhesive also has good adhesive property to plastics and fibers such as polyvinyl chloride, polyester, polystyrene and polyolefin treated by corona. The pressure-sensitive adhesive provided by the invention can be reused, can still maintain good adhesive characteristics after being pasted and peeled off for many times, and the peeling strength does not obviously drop; and the pressure-sensitive adhesive can be easily separated from an adhered object and does not cause transfer of an adhesive layer after being adhered for a long period of time or after being subjected to a large amount of pressure.

A method for forming a multilayer coating film is provided. The method includes coating at least one object with an aqueous primer coating composition, an aqueous first colored coating composition, an aqueous second colored coating composition, and a clear coating composition, in that order. The aqueous primer coating composition contains a component (A) which contains a polyolefin resin, a component (B) which contains a polyurethane resin, a curing agent (C) and electrically conductive carbon (D). The aqueous first colored coating composition and aqueous second colored coating composition each contain a core/shell emulsion. The clear coating composition contains a hydroxyl group-containing acrylic resin, a polyisocyanate and a melamine resin. The method improves the appearance, chipping resistance, adhesive properties and low temperature impact properties of a coating film.

The invention relates to a marine low-smoke halogen-free low-toxicity frame-retardant fire-resistant soft optical cable and a manufacturing method thereof, and belongs to the technical field of optical communication special optical cable manufacturing. The marine low-smoke halogen-free low-toxicity frame-retardant fire-resistant soft optical cable is a special fire-resistant optical cable for data communication, and is composed of ultra-low-loss low-temperature-resistant tightly-sleeved optical fiber units, a high-modulus aramid fiber and waterproof aramid fiber mixed reinforcing piece, a halogen-free low-smoke flame-retardant polyolefin oxygen-isolation layer inner protective sleeve, a fire-resistant white mica tape wrapping layer, a stainless steel wire woven wire layer and a crosslinked polyolefin outer protective sleeve. The ultra-low-loss low-temperature-resistant tightly-sleeved optical fiber units are twisted, high-modulus aramid fiber and waterproof aramid fiber are adopted for making the high-modulus aramid fiber and waterproof aramid fiber mixed reinforcing piece, the oxygen-isolation layer inner protective sleeve wraps the reinforcing piece in an extruded mode, the fire-resistant white mica tape wrapping layer wraps the oxygen-isolation layer inner protective sleeve, stainless steel wires are woven outside the fire-resistant white mica tape wrapping layer to form the stainless steel wire woven wire layer, and the crosslinked polyolefin outer protective sleeve wraps the fire-resistant white mica tape wrapping layer and the stainless steel wire woven wire layer in an extruded mode.

The invention relates to the technical field of marine polyurethane thermal insulation balance weight pipes, and discloses a hard polyurethane spraying prefabricated thermal insulation balance weight pipe with an anti-corrosion layer and a preparation method of the hard polyurethane spraying prefabricated thermal insulation balance weight pipe. The hard polyurethane spraying prefabricated thermal insulation balance weight pipe structurally comprises a steel pipe, the anti-corrosion layer, a polyurethane foam thermal insulation layer, an interface adhesive layer, a polyolefin protection layer, anti-skid particles, a concrete balance weight layer and a reinforcement steel wire mesh in sequence from inside to outside. A waterproof sealing rubber strip is bonded to the end of the anti-corrosion layer. The preparation method comprises the steps that the steel pipe coated with the anti-corrosion layer is conveyed to a polyurethane foam spraying line for spraying construction; the waterproof sealing rubber strip is bonded; an adhesive is wound, polyolefin is extruded, and the anti-skid particles are scattered; the pipe end of the polyolefin protection layer is finished after cooling; and weight balancing, finishing and maintaining of the thermal insulation pipe are carried out. The conditions of holes and uneven density cannot be generated, a pipe end waterproof cap does not need to be additionally mounted, and consistency of the pipe end and a main coating can be kept; and the shearing strength between the polyurethane foam thermal insulation layer and the polyolefin protection layer and the shearing strength between the polyolefin protection layer and the concrete balance weight layer are increased.

The invention is to provide a hot melt composition for a toilet seat sheet, settling problems of the transfer of an adhesive to the toilet seat and resistance to washing, while keeping the adhesiveness to the toilet seat of a Western-style toilet bowl, using no solvent so as not to require a drying equipment, composed only of a base material and an adhesive layer so as not to require specific coating patterns, and advantageous in the production cost concerning to the equipment, time and the like, and to provide a toilet seat sheet produced by using the composition. The hot melt composition for a toilet seat sheet comprises (A) 5-30 mass% styrene-based thermoplastic elastomer, (B) 20-55 mass% tackifier resin having >=100[deg.]C softening point, (C) 10-40 mass% plasticizer, (D) 0-15 mass% amorphous polyolefin and (E) 0.1-5 mass% white pigment, and has 1,000-10,000 mPa s melt viscosity at 160[deg.]C, and a toilet seat sheet produced by using the composition is also provided.

This invention provides a master batch composition comprising 10 to 95% by mass of an additive for plastics, 1 to 50% by mass of an olefin polymer having specific property values, and 1 to 89% by mass of a polyolefin resin for a carrier. The master batch composition is useful for the production of an injection molded product of a polyolefin resin, particularly polypropylene resin, and can improve the dispersibility of additives in the polyolefin molded product and, at the same time, can realize filling of a high level of various additives into the master batch composition and is free from tack. A polyolefin resin composition comprising the master batch composition in a polyolefin resin and a polyolefin molded product using the resin composition are also provided.

The invention discloses a TPO (thermoplastic polyolefin) waterproof roll material and a preparation method thereof. The TPO waterproof roll material comprises, by weight, 8 parts of TPO, 2 parts of EVA (ethylene vinyl-acetate copolymer) and 2 parts of combined flame retardant, wherein the TPO is santoprene 101-55, the EVA is delrin 750, and the combined flame retardant is Al (OH)3 and Mg (OH)2. The waterproof roll material is reasonable in proportion, the TPO waterproof roll material prepared by the method has fine flame resistance and low-temperature bending resistance, the softness of a finished product prepared by the method is improved, and construction is facilitated.

This invention relates to a screen type half protection sleeve for wires and cables, which is composed of two half parts, a leg and a groove are set between the two parts to form a locking unit to each other and the formula of the material of the sleeve is in the following weight proportions: polyolefin plastic: 100, metal powder: 5-20, carbon black: 5-65, stabilizer: 0.3-15 and toughening midified booster: 0-16.

A disperse dyeable fiber or filament is comprised principally of polyolefin modified with PETG to accept the disperse dyes. The combining of maleic anhydride with the PETG provides good dispersion of the PETG for uniform dye results. Novel textile fabric, knitted, woven and non-woven, can be formed with yarns or fibers formed in accordance with the invention. In one aspect of the invention, fabric can be disperse dyed to a light, medium or deep solid shade. In another aspect, the textile fabrics are manufactured using olefin yarns that contain variable amounts of dye acceptor additives. A fabric with more than one tone of a color thus can be dyed in a single dye bath. The fabrics and yarn according to this invention can be processed using conventional spinning, weaving, knitting, web formingl machines and will dye using existing dyeing and finishing systems. This invention is of particular value in the apparel and home furnishings industry.

The invention provides a heat-resisting anticorrosive material. According to the technical scheme adopted by the invention, the heat-resisting anticorrosive material comprises water and a benzoic acid component and is characterized by also comprising the following components in parts by mass: 2-5 parts of chitosan, 3-5 parts of polyolefin acid salt, 1-5 parts of calcium propionate and 7-20 parts of sodium diacetate. Compared with the prior art, the heat-resisting anticorrosive material has the beneficial effects that the heat-resisting anticorrosive material has very good heat-resisting anticorrosive capacity by adding the chitosan, the polyolefin acid salt, the calcium propionate and the sodium diacetate.

The invention relates to synthesis of an end amino silicone oil modified stryenemaleic anhydride copolymer. The synthetic route comprises the following steps: in a flask, adding 80-100 parts of a stryenemaleic anhydride copolymer and 100-300 parts of a solvent; stirring the mixture at 45-60 DEG C, adding 0.5-10 parts of a catalyst aqueous solution till the materials are fully dissolve; stirring the mixture for 0.5 h; dropwise adding 20-50 parts of an end amino silicone oil solution through a constant flow pump; heating the mixture to 70-90 DEG C after dropwise addition; keeping the temperaturefor 3-6 hours; continuously heating the mixture to 100-150 DEG C; refluxing the mixture for 4-10 hours; exsecting low-boiling-point substances in the system by a water konckout vessel; and after thereaction, drying the mixture to obtain a target product: a polymer elastomer with a maleimide structure on a main chain. The modified novel material has excellent performance of organic silicon, polyolefin and maleimide, has good chemical stability resistance, heat resistance and toughness, and can be applied to the fields of coatings, hot melt adhesives and the like.

The invention discloses a polymer/carbon nano composite material and a preparation method thereof. The composite material is prepared from the following components in percentage by weight: 93 to 100% of polyolefin, 0.5 to 5% of carbon nano material, and 0.2 to 2% of Lewis acid catalyst, wherein the total percentage by weight is 100%. The composite material has the advantages that the self structure of carbon nano material is not destroyed, and the carbon nano material can be well dispersed in the polymer matrix.

A method of making a printed identification card core, a printable sheet for manufacturing cores for laminated identification cards and a core for a laminated identification card. The method includes the steps of extruding polyethylene onto one side of a release film, laminating a porous, printable polyolefin film to the polyethylene side of the release film, die cutting the polyolefin film and the polyethylene film to form rectangular bodies each having a die cut transversely extending fold line dividing each of the rectangular bodies into two identically sized rectangular panels, printing on the porous, printable polyolefin film within said panels, removing a rectangular panel from the release sheet and folding the rectangular body about the fold line to locate the printed polyolefin surfaces on the exterior of the core. The core so manufactured can be inserted into a laminatable pouch and laminated to the core to form a tamper resistant identification card. The printable sheet includes a plastic sheet having a release surface on one side thereof, a layer of extruded polyethylene applied to the release surface of the plastic sheet, a layer of porous, printable polyolefin applied to the layer of extruded polyethylene and die cut panels formed in the layer of extruded polyethylene and the layer of porous, printable polyolefin. The core for the identification card includes an inner layer of polyethylene on each side of the core, a pair of layers of porous, printable polyolefin located outwardly of the inner layers of polyethylene and printed indicia on the outer faces of the layers of printable polyolefin.

A method for improving the efficacy of polar additives used in polyolefins is disclosed. The method is related to the addition of an effective amount of a co-additive compound of the formula R₁(OCH₂CH₂)_xOH to the polyolefin prior to forming the film, wherein R₁ is a straight or branched chain alkyl of 20 to 100 carbon atoms and x is 2 to 100. The presence of these materials in polyolefin resins allows less polar additives to be used without losing their efficacy and also leads to improved optical properties for films made from such resins.

The invention discloses a composite wax with an excellent cutting ability, and a preparation method thereof. The composite wax is prepared by mixing 42-79% of polyolefin wax, 20-50% of polyolefin, 0.1-3% of ethylene bis(stearamide), 0.5-5% of an inorganic filler and 0.01-0.2% of pigment powder. The composite wax prepared in the invention has the advantages of high melting point, good cutting surface, no electrostatic adsorption phenomenon, moderate hardness, and provision of an excellent processing precision for CAM/CAD.

The invention discloses a halogen-free metal insulating tube. The halogen-free metal insulating tube comprises a metal tube body, and an insulating layer laminated on the outer surface of the metal tube body, wherein the insulation layer comprises a substrate and a plurality of bulges arranged on the substrate; the bulges are adhered to the metal tube body; an air passage is formed between every two bulges and the metal tube body; the insulating layer is made of a polyolefin cable material; the polyolefin cable material is prepared by copolymerizing polyethylene, an ethylene-vinyl acetate copolymer, a flame retardant and a silane coupling agent through a coupling reaction. Correspondingly, the invention further provides a preparation method of the halogen-free metal insulating tube. According to the invention, the halogen-free metal insulating tube is not only simple in structure, low in cost and long in service life, but also has low smoke, flame retardance, corrosion resistance, cracking resistance, ultraviolet protection and other excellent performance.