67 results about "Polyethylene" patented technology

The invention relates to a solid-type filter stick formed by granular assembling and a preparation method of the solid-type filter stick. The filter stick is prepared by the assembling forming of solid granules and an adhesion agent, wherein the solid granules are one or more of natural plant granules, natural mineral granules and artificial adsorption granules. The adhesive agent is one or more of ethylene-vinyl acetate copolymer, polyethylene hot melt adhesive, epoxy resin, polyester, polyether, polyurethane, dextrin, polyvinyl alcohol, polycaprolactone, gelatin and Arabic gum. The mass ratio of the solid granules and the adhesive agent is 0.5-200:1. The filter stick is prepared by the bonding forming after the solid granules and the adhesive agent are mixed, is loosened, breathable and stable in structure, and can be used as a unitary filter tip or can be combined with other filtering materials to form a multi-component filter tip. The preparation method is simple in process and high in production stability. The filter stick is novel in appearance and structure, stable in structure, excellent in incision performance, wide in material selection range, good in filtering effect and capable of effectively improving the smoking quality of cigarettes.

The invention relates to fibers capable of heat storage and temperature adjustment. The fiber prepared by using the composite melt-spinning method comprises the following components by weight percent: 20% to 60% of polymer-type phase-change materials as a core component or an island component and 80% to 40% of fiber-forming polymers as a skin component or a sea component, wherein the polymer-type phase-change materials comprise the homopolymer or copolymer of alkyl acrylate, alkyl methacrylate and monoalkyl/dualalkyl itaconate or the copolymer of the homopolymer thereof, and is characterized in that the normal alkyl capable of carrying out the solid-liquid and liquid-solid phase transition and further achieving the effect of energy storage is fixed on the main chain of the polymer by the covalent bond; and the fiber-forming polymer comprises at least one selected from polyethylene, polypropylene, polyamide, co-polyamide, co-polyester and co-polyacrylonitrile. The weight loss of the fiber taking methylbenzene as solvent is not higher than 5% after being subjected to the treatment of a Soxhlet extractor for 2 hours.

The present invention relates to a lithium cell flexible package film and its production method. It is composed of 7 layers of base layer, adhesive resin layer, chemical conversion treatment layer, aluminium foil layer, chemical conversion treatment layer, adhesive resin layer and thermal sealing layer, in which the thermal sealing layer is multi-layer coextrusion structure, and is formed from at least two layers of resin, in which at least one layer is polyethylene resin, and at least one layer is polypropylene resin. Said invention also provides the concrete steps of its production method.

The invention relates to a method for preparing a high-temperature resistant microporous membrane. The method sequentially comprises the following steps: (A) mixing raw materials consisting of 20-55% (by weight) of resin mixture and 45-80% (by weight) of membrane forming solvent; (B) carrying out melt extrusion on the mixed raw materials, and cooling to form a sheet; (C) longitudinally and transversely stretching the sheet, so as to form a membrane; (D) extracting the membrane forming solvent from the membrane through an extraction solvent, so as to form a microporous membrane; (E) carrying out heat-setting on the microporous membrane formed in the step (D), wherein the resin mixture consists of the ingredients in percentage by weight: 2-10% of high-temperature resistant resin, 5-15% of polypropylene and 75-93% of polyethylene, the melting point of the high-temperature resistant resin is higher than 170 DEG C, and polyethylene with the molecular weight greater than 106 accounts for 10-30% the total weight of the polyethylene. The method for preparing the high-temperature resistant microporous membrane, disclosed by the invention, aims to provide the high-temperature resistant microporous membrane which is good in temperature resistance and relatively high in melting rupture temperature and better meets the use requirements of lithium battery diaphragms.

A moisture barrier for a rigid insulating panel of a spa cover is a laminate bag of at least two layers. A first layer of polyethylene plastic film is bonded with at least a second and inner layer of metalized plastic film to form the laminate bag. A third layer of polyester is optionally provided and which is enveloped within second layer as an additional moisture barrier. The laminate bag has at least an open end which is adapted for receiving the panel and which is sealed. The sealed laminate bag can be evacuated for additional insulating characteristics.

The invention relates to an ink resin composite used for plastic gravure printing and a preparation method thereof. The ink prepared from the ink resin composite is suitable for the non-polar substrates biaxially oriented polypropylene laminated polyethylene (BOPP) and polyethylene (PE) and the polar substrate polyethylene terephthalate (PET). The preparation method of the ink resin composite is as follows: the in-situ polymerization blending method is adopted to introduce alcohol-soluble polyurethane resin in a reaction system of the ink resin composite. The ink resin composite comprises the following components by weight percent: 30-50% of acetic ether, 8-25.5% of acrylate polymer, 8-25% of vinyl acetate polymer, 2.2-4.5% of styrene polymer, 1.5-2.5% of active functional polymer, 0.5-40% of alcohol-soluble polyurethane resin, 0.1-0.6% of initiator and 6-10% of alcohol diluent. The ink resin composite of the invention has simple preparation method, is green and environmentally friendly and has wide application prospect in the gravure printing ink.

The invention belongs to the field of agricultural films, and discloses a weeding mulching film and a preparation method and application thereof. The weeding mulching film comprises the following components in percentage by mass: 3-30% of herbicide masterbatch and 70-97% of PE (polyethylene) resin A; the herbicide masterbatch comprises the following components in percentage by mass: 25-75 %of PE resin B, 10-60% of herbicide and 2-15% of modifier. In the invention, the modifier is used for pretreating the herbicide; during processing, the modifier is molten and then covers the surface of the herbicide to form a herbicide core; the core shell structure taking the modifier as a shell can effectively protect the herbicide to reduce the loss of the herbicide caused by thermolysis at high temperature in a preparation process of the weeding masterbatch and mulching film. In the weeding mulching film provided by the invention, the herbicide masterbatch is uniformly dispersed, the release rate of the herbicide is reduced, and the efficacy time can be prolonged; after covering with the mulching film for 60 days, the weeding effect still can exceed 90%.

The invention discloses an aluminum conductor cable core drainage cable. The aluminum conductor cable core drainage cable is composed of control cable cores, a butyronitrile insulating layer, an aluminum alloy strip armor layer, an aluminum strip shielding layer and a tinned aluminum strip polyethylene jacket layer. The three sets of control cable cores are arranged inside the butyronitrile insulating layer in an extruding mode, the butyronitrile insulating layer is covered with the aluminum alloy strip armor layer, the aluminum alloy strip armor layer is covered with the aluminum strip shielding layer, and the aluminum strip shielding layer is covered with the tinned aluminum strip polyethylene jacket layer. The cable has the advantages of being low in installing and laying temperature, long in service life, resistant to aging, cold, flaming, and acid and alkali corrosion, and high in tensile resistance.

The invention discloses an injection moulding process of polyethylene (PE) material pieces for an infusion apparatus. The injection process comprises the following steps of: S1, melting, S2, clamping a mould, S3, injecting, S4, pressure-maintaining, S5, cooling, S6, opening the mould, and S7, demoulding. The beneficial effects of the invention are as follows: as a hot runner injection moulding process is applied, and a heating device for heating a runner is contained in the hot runner mould, so that the runner is a molten state during the entire injection moulding period, further, the raw materials are saved, and the cost is reduced; the process provided by the invention is simple in process procedures, easy to achieve and short in the cycle time; and the product has better quality and the degree of automation is increased.

The present invention discloses a decomposable environmentally-friendly heat-insulation packaging bag which comprises the following parts by weight of raw material components: 20-40 parts of straw fiber, 10-15 parts of rice husk powder, 10-15 parts of acrylate-1 and 1-dichloroethylene copolymer, 1-2 parts of zinc gluconate, 1-2 parts of gelatin, 2-8 parts of aluminum hydroxide, 2-6 parts of potassium hydroxide, 13-15 parts of furfuryl alcohol resin, 2 5 parts of zinc oxide, 0.5-1 part of talc powder, 5-6 parts of wax, 1-3 parts of silica powder, 2-4 parts of tetrahydrofuran, 8-13 parts of polyethylene, 0.5-1 part of nano-organic montmorillonite, 2-6 parts of silicon oxide powder, 2-4 parts of a foaming agent and 2-4 parts of clay. The decomposable environmentally-friendly heat-insulation packaging bag takes the environmentally friendly materials, is green and environmentally-friendly, has heat-insulation effect, and is suitable for cooked food packaging.

The invention discloses a coating material for sealing the coal wall of a gob-side coal roadway. The coating material comprises 100 parts of cement, 3-6 parts of an environmentally-friendly interfacepolymer solid material and 10-15 parts of a mineral mixture and other additives, the environmentally-friendly interface polymer solid material comprises, by mass, 100 parts of an acrylate polymer solid and 8-9 parts of polyethylene synthetic resin, and the mineral mixture and other additives comprise, by mass, 5-10 parts of silica fume, 10-15 parts of common fly ash or slag, 1-2 parts of a superplasticizer and trace parts of basalt chopped fibers. The coating material is a novel composite material for guniting, and meets the requirements for plugging the coal wall of the gob-side coal roadway.

The invention discloses an oxidation-resistant polymer film with memory function. The oxidation-resistant polymer film with memory function is prepared from carboxylated graphene oxide, nano silicon dioxide, modified kudzu root starch, nano silver, curcumin, proanthocyanidin, vinyl triguaiacyl trimethoxy silane, epoxy soybean oil, nitrile-butadiene rubber powder, tetramethylsilane, dodecylbenzene sulfonic acid, paraffin oil, meerschaum wool, metallocene polyethylene and a polypropylene random copolymer. The polymer film has the advantages of simple components, low cost, no toxicity, no corrosiveness, no impurity, bright surface, impact resistance and tear resistance, is non-combustible, has favorable service performance, and is green and environment-friendly. The polymer film has low ash content, and can enhance the electric properties and high cleanliness of capacitors. The polymer film has excellent heat resistance, is non-combustible, and has high electrochemical activity. The polymer film has high oxidation resistance and stable performance, and thus, can obviously enhance the user stability and service life of the capacitors. The polymer film has the characteristics of high mechanical properties, acid/alkali resistance, corrosion resistance and high recoverability.

The invention discloses a medical packaging film which sequentially comprises a printing layer, a mixed functional polyethylene layer, an aluminum foil layer and a heat sealing layer from exterior to interior. Compared with the prior art, the medical packaging film disclosed by the invention does not use an adhesive, thereby reducing the residuals of a solvent and reducing the pollution on medicines and the environment; simultaneously, the separation performance and the cost control are combined; the medical packaging film has the advantages of good separation effect and long quality guarantee period; the cost is reduced by 15-30%; resources are saved; and the heat sealing temperature can be controlled to be 100-110 DEG C.

The invention relates to a wasted plastic steel wound polyethylene drainage pipe recovering device and technology. The device comprises a machine frame, a feeding partition board, a feed inlet, a driving motor, a speed change gearbox and a rotary cylinder. A control box is arranged at the upper end of the interior of the support, the driving motor is installed at the lower end of the interior of the support, the speed change gearbox is connected to one end of the driving motor and located at one side of the lower end of the interior of the support, and the rotary cylinder is connected to the other end of the speed change gearbox; one end of the rotary cylinder is fixedly connected to the speed change gearbox, the other end of the rotary cylinder is supported by a supporting arm, the feeding partition board is installed between the two sides of the support and located at one side of the rotary cylinder, vertical reinforcing ribs are installed on the back side of the feeding partition board, and a baffle is welded to the lower ends of the vertical reinforcing ribs; the feed inlet is formed in the middle of the feeding partition board, and two stand columns are further installed between the feed inlet of the feeding partition board and the rotary cylinder and located at the inner side of the feed inlet. The device has the advantages of being simple in design, convenient to operate, safe, reliable, and capable of saving time, decreasing labor force, reducing recovery cost and improving working efficiency greatly.

The invention discloses a fireproof material for strongbox. The fireproof material is prepared from the following raw materials in parts by weight: 4 to 7 parts of ammonium polyphosphate, 6 to 8 parts of borax, 3 to 5 parts of antimony oxide, 20 to 25 parts of triphenyl phosphate, 6 to 8 parts of polyaniline, 25 to 30 parts of polyethylene, 3 to 4 parts of pentaerythritol, and 8 to 12 parts of expanded perlite. The manufacturing cost is low, the using performance is qualified, the material is affordable for common families, the thermal insulation effect is good, the high temperature can be effectively obstructed, the safety of articles in the strongbox can be guaranteed, and at the same time, the material is safe and environment-friendly.

The invention relates to a degradable capacitor plastic shell which is composed of the following components in parts by weight: 35 parts of polyvinyl alcohol resin, 15 parts of gelatin, 10 parts of methyl-silicone rubber, 5 parts of hyaluronic acid, 5 parts of tribasic lead sulfate, 5 parts of nano silicon dioxide, 5 parts of modified wood-plastic powder, 2 parts of chlorinated paraffin, 2 parts of propanediol, 2 parts of palm oil, 5 parts of carbon fiber, 5 parts of metallocene polyethylene, 2 parts of methylsilicone oil, 0.5 part of tobacco cellulose, 2 parts of plasticizer, 2 parts of oxidized polyethylene, 2 parts of dioctyl adipate, 2 parts of rare-earth light conversion agent, 2 parts of cotton fiber, 2 parts of corn starch, 2 parts of polyester rubber powder, 2 parts of butyl acetate and 2 parts of talcum powder. The method has the advantages of simple components and low cost; the finished product is degradable, has stable performance, and does not have toxicity or harm in a high-temperature environment; and meanwhile, by changing the traditional preparation technique and adding the refrigeration procedure, the product has higher safety and still has favorable stability at higher temperature.

The invention discloses a high-heat-resisting self-lubricating PVC/NBR composite foam board and a preparation method thereof. According to the composite foam board, PVC is blended with NBR, waste rubber powder, maleic anhydride grafted polyethylene, and polytetrafluoroethylene micropowder modified by silane coupling agent to serve as a foaming base material, the compatibility of the materials is good, the foam board achieves excellent heat resistance, self-lubrication and mechanical strength, the foam board is combined with other materials to finally prepare a composite sheet, the surface of the composite sheet is smooth, an internal structure of the composite sheet is even, the surface of the composite sheet is lyophobic and antifouling, and the composite sheet is economic and environment-friendly, and has an excellent application prospect in various fields.

The invention provides an external display mark of a polyethylene electro-fusion socket pipe fitting and a limiting device for resistance wires. The external display mark of the polyethylene electro-fusion socket pipe fitting comprises a pipe body. Sockets are formed in the pipe body. The outer wall of the pipe body is provided with binding post protective sleeves. Binding posts are arranged in bodies of the binding post protective sleeves. Fusion regions are arranged on the inner wall of the pipe body. The resistance wires are arranged in the fusion regions. One end of each resistance wire is connected with the corresponding binding post. The external display mark of the polyethylene electro-fusion socket pipe fitting is characterized in that the middle of the inner wall of the pipe body is provided with stop keys which make contact with the end face of an inserted pipe; the outer wall of the pipe body is provided with stop key marking ribs; the stop key marking ribs correspond to the stop keys in position; the inner wall of the mouth portion of each socket of the pipe body is provided with limiting grooves.

The invention discloses a sealing adhesive used for automobile part changing. The sealing adhesive consists of the following raw materials in parts by weight: 35 to 45 parts of natural rubber, 18 to 26 parts of EPDM rubber, 6 to 8 parts of paraffin oil, 7 to 9 parts of atomizing carbon black, 0.8 to 1.2 parts of sulfur, 5 to 7 parts of a ceramic micro powder, 6 to 8 parts of lignin, 6 to 8 parts of nanosilicon dioxide, 1.1 to 1.4 parts of an anti-aging agent, 9 to 12 parts of a softening agent, 5 to 7 parts of polyethylene glycol, 4 to 6 parts of dimethyl silicone, 1 to 2 parts of polyurethane, 2 to 4 parts of linear polyethylene, 3 to 6 parts of triallyl isocyanurate, 1 to 4 parts of dicumyl peroxide, 1 to 3 parts of a lubrication dispersing agent, 4 to 6 parts of zinc oxide and 5 to 7 parts of sodium silicate. The sealing adhesive has the beneficial effects that firstly, the sealing adhesive is high in lubricating property, high in heat resistance and high in aging resistance, the twisting force is prevented from being increased to cause twisted fracture in the assembling process, and the service life is long; secondly, the sealing adhesive is high in processing safety, high in elasticity, stable in colloid chemistry performance, good in sealing effect, sturdy and durable, high in adhesive property and unlikely to cause sun cracks and falling.