12 results about "Conventional polyethylene" patented technology

The invention belongs to the technical field of polyurethane elastomers, and particularly relates to an anti-static high-temperature-resistant polyurethane microporous elastomer and a preparation method thereof. Comprising a component A and a component B. The component A comprises conventional polyester polyol, functionalized polyester polyol, polyester polymer polyol, a chain extender, a cross-linking agent, a foam stabilizer, a foaming agent and a catalyst, and the component B comprises conventional polyester polyol, functionalized polyester polyol, polyether polyol and isocyanate. The functional polyester polyol is prepared by mixing activated carbon powder modified neopentyl glycol with straight-chain small-molecular dihydric alcohol and then carrying out esterification reaction on the mixture and dibasic acid. The prepared anti-static high-temperature-resistant polyurethane microporous elastomer has excellent conductivity and high-temperature resistance, and is good in skin, high in bearing capacity and high in thermal deformation temperature.

The invention belongs to the technical field of preparation of fog water collecting mulching films, and particularly relates to a fog water collecting mulching film and a preparation method and application thereof.The fog water collecting mulching film is formed by spraying a super-hydrophobic layer on the surface of a flexible substrate, the super-hydrophobic layer is composed of the same solid particles or different solid particles with three different particle sizes, and after modification is conducted through a silane coupling agent, the super-hydrophobic layer is prepared into the fog water collecting mulching film. The surface contact angle of the super-hydrophobic substrate prepared by doping low-surface-energy liquid and curing can reach 165 degrees or above, a conical structure is fixed on the surface of the super-hydrophobic flexible substrate by adopting a mechanical assembly method, and the fog collection efficiency can be regulated and controlled. The conical structure of the bionic cactus is beneficial to capturing fog water and transporting water drops, the super-hydrophobic substrate is beneficial to rapid falling of the water drops, and efficient fog water collection is achieved through cooperation of the bionic cactus and the super-hydrophobic substrate. The mulching film can be recycled for multiple times and can replace a conventional polyethylene mulching film, and environmental pollution is reduced.

The present invention discloses a modification method for polyethylene suspension fillers used in a moving bed biofilm reactor. This method uses polyethylene fillers as the matrix. After treating the surface of the fillers with an acidic potassium dichromate mixed solution, it is immersed in an aqueous solution of a coupling agent (silane coupling agent KH-560, silane coupling agent KH-570, titanate coupling agent CS-311), and activated carbon powder and gelatin protein as modifiers are added, successfully loading activated carbon and gelatin protein onto the surface of the fillers. Based on conventional polyethylene fillers, after treating the surface with an acidic potassium dichromate mixed solution, the present invention utilizes the cross-linking reaction of the coupling agent with macromolecular compounds to make the surface of the fillers carry hydrophilic groups such as hydroxyl and carbonyl groups, providing favorable conditions for the rapid growth of microorganisms on the surface of the fillers and enhancing the film-forming effect of the fillers. During the sewage treatment process, it is superior to conventional fillers in terms of the film-forming speed of the fillers, the amount of biofilm, the tightness between the biofilm and the carrier, and the microbial activity, etc.

The invention belongs to the field of polyethylene films, and particularly relates to a linear easy-to-tear film and a preparation method thereof.The linear easy-to-tear film is formed by laminating the following material layers layer by layer: an outer surface layer, a core layer and an inner surface layer, and the mass part ratio of the outer surface layer to the core layer to the inner surface layer is (30-35): (50-55): (15-20); the raw material of the outer surface layer is linear branched chain type polyethylene; the raw material of the core layer is high-density polyethylene; and the inner surface layer is made of polypropylene. Through cooperation of raw material parameters, proportion and process parameters, the effect that a conventional polyethylene material is adopted to achieve the effect of adding an easy-to-tear material to form a linear easy-to-tear film is achieved, tearing with the width of 1 cm is achieved, tearing is conducted along the middle straight line of a tearing opening, and the effects of no deflection and no turning are achieved.

The invention discloses a spherical aluminum oxide coating material for a lithium battery diaphragm and a preparation method of the spherical aluminum oxide coating material, and belongs to the technical field of lithium battery diaphragms.The spherical aluminum oxide coating material for the lithium battery diaphragm comprises, by weight, 40-70 parts of spherical aluminum oxide, 1-10 parts of lithiated PEEK and 50-100 parts of solvent, PEEK of the lithiated PEEK is hyperbranched PEEK, polymeric monomers of the hyperbranched PEEK comprise hexahydric phenol, diphenolic acid and 4, 4 '-dihydroxy-4, 4'-biphenyl. According to the present invention, the surface of the conventional polyethylene diaphragm is coated with the coating material composed of the lithiated PEEK and the spherical alumina particles, such that the electrochemical performance and the stability of the lithium metal battery can be easily improved, and the coating diaphragm has characteristics of excellent thermal stability, excellent wettability and excellent electrolyte absorption rate.

Provided is chlorosulfonated polyethylene with which it is possible to reduce an environmental load (emission of greenhouse gases) over its life cycle by using a plant-derived polyethylene as the raw material instead of a conventional polyethylene obtained from fossil fuels.　Provided is chlorosulfonated polyethylene having a biomass content of 10 to 100% as measured in accordance with ASTM D 6866.

The invention belongs to the field of polyethylene cables, and particularly relates to a polyethylene insulating material, a master batch and a degassing-free polyethylene cable. The polyethylene insulating material is prepared from the following components in parts by weight: 90 to 97 parts of polyethylene, 1.5 to 2.5 parts of dicumyl peroxide, 0.2 to 1.2 parts of assistant crosslinking agent, 1.5 to 2.5 parts of one or more benzene carboxylic acid compounds and 1 to 6 parts of compatilizer. After the polyethylene insulating material provided by the invention is used for preparing a polyethylene insulating cable, a degassing process for removing small molecular byproducts of the polyethylene insulating cable can be omitted, the micropore size of the obtained polyethylene insulating cable is less than or equal to 20 microns, and the insulating property is equivalent to or even better than that of the existing degassed conventional polyethylene insulating cable. Meanwhile, the production cycle is short, and the manufacturing cost is low.

The application provides a regenerated flash non-woven fabric and a preparation method thereof, and relates to the technical field of recycling and regeneration of waste polymer materials.The non-woven fabric is prepared by using regenerated polyethylene as a main material, adding conventional polyethylene, modified polyester, cyclodextrin modified shell powder and calcium stearate through a flash method, so that the recycling and utilization of waste high-density polyethylene are realized, the utilization rate of waste vinyl chloride is improved, the obtained non-woven fabric has high whiteness, good temperature resistance, high breaking strength, the breaking strength is greater than or equal to 204.7N / 5cm and less than or equal to 247.3N / 5cm, the strength is equivalent to that of a virgin non-woven fabric, and the softness is high.

The present application belongs to the technical field of optical cable design and manufacture, and more particularly relates to a high-roundness air-blow micro-cluster optical cable, a design and manufacturing method thereof. The micro-cluster optical cable comprises a cable core, a reinforcing member arranged outside the cable core, and a polyethylene outer sheath. In addition to containing conventional polyethylene sheath material, the polyethylene sheath also contains at least one second polyethylene sheath material which has different shrinkage characteristics from the conventional polyethylene sheath material and is symmetrically arranged inside or outside the polyethylene outer sheath. The shrinkage characteristics of the reinforcing member side sheath material are comparable to the shrinkage characteristics of the non-reinforcing member side sheath material, so that the optical cable tends to be circular after forming.

The application provides an elastic supporting material and a preparation method and application thereof, and the elastic supporting material is prepared from 85-95 parts of low-density high-pressure linear polyethylene, 1.5-2.5 parts of nano filler, 1.5-2.5 parts of plastic lubricant, 3-5 parts of high-density polyethylene, 0.25-0.35 parts of antioxidant, 0.2-0.3 parts of foaming agent, 0.7-0.8 parts of stabilizer and 0.045-0.055 parts of diffusing agent through melting and shaping. Compared with conventional polyethylene type foaming materials, the elastic supporting material has better resilience and softness, and when being used for a hatband core, the hatband core is easy to bend and store, and has good portability.

The present invention relates to a high-temperature, heat-resistant, and oil-resistant food tray paper that is suitable for use in ovens and air fryers and has high recyclability, as well as a method for manufacturing the same. To address the lack of heat resistance and recycling issues associated with conventional polyethylene coatings, the present invention applies a three-stage coating process—undercoating, top coating, and back coating—to the paper. The undercoating secures barrier properties through pigment coating, while the top coating imparts oil resistance and heat resistance by using oil-resistant modified starch and water-resistant surface strength reinforcing additives. The back coating ensures paper curl control and strong water resistance. Through this, the invention provides a disposable food tray paper that can be used stably even at high temperatures of 180°C to 200°C, offers excellent processability such as adhesive bonding, is environmentally friendly based on natural compounds, and is recyclable.

The invention belongs to the technical field of postharvest preservation, and particularly relates to application of a PBAT composite film in waxberry preservation. The invention provides a PBAT composite film for waxberry preservation, which is prepared by taking PBAT and PLA as main raw materials, adding SiO2 (KH560) and ADR4468, and carrying out melt blending, film blowing and other processes. The film is used for packaging and fresh keeping of waxberries, can effectively inhibit fruit rot under a low-temperature storage condition, keeps fruit hardness and soluble solid content, and remarkably prolongs the post-harvest shelf life of the waxberries. Compared with a conventional polyethylene film, the PBAT composite film provided by the invention has better mechanical properties and air and moisture permeability, and is suitable for fresh-keeping packaging of perishable fruits such as waxberries and the like.