Showing papers on "Plastomer published in 2017"

Novel Magnetorheological Plastomer Filled with NdFeB Particles: Preparation, Characterization, and Magnetic–Mechanic Coupling Properties

Abstract: This work reported a novel magnetorheological plastomer doped with hard magnetic NdFeB particles (named as H-MRP). The dynamic properties of the H-MRP were systematically tested, and the mechanism of its unusual response to magnetic field was discussed. Unlike the MRP filled with soft magnetic particles (S-MRP), the storage modulus (G′) of H-MRPs kept growing by 20% when the magnetic field decreased, while that of S-MRPs decreased with decreasing of the magnetic field immediately without an obvious change. Under the magnetic field ranging from 0 to 1 T, there was a peak value in the rising stage of G′ at about 400 mT magnetic field, while that of S-MRPs changed monotonically. After an off–on progress of the magnetic field, the final G′ of H-MRPs increased by over 10%. A possible mechanism was proposed to study the microstructure dependent mechanical properties. It was found that the complex viscoelastic behavior originated from the large hysteresis characteristics of the H-MRPs.

Strip-shaped slow-release scale inhibitor and preparation method thereof

Abstract: The invention discloses a strip-shaped slow-release scale inhibitor The strip-shaped slow-release scale inhibitor is prepared from the following components in percentage by weight: 40% to 60% of scale inhibitor, 10% to 30% of adhesive, and 20% to 40% of water In addition, the invention also discloses a preparation method of the strip-shaped slow-release scale inhibitor The preparation method comprises the following steps of (1) fully stirring the scale inhibitor, the adhesive and the water, so as to form a uniform plastomer; (2) extruding and forming the plastomer in step (1), so as to obtain a wet material of the strip-shaped slow-release scale inhibitor; (3) drying the wet material of the strip-shaped slow-release scale inhibitor in step (2), so as to obtain the strip-shaped slow-release scale inhibitor The strip-shaped slow-release scale inhibitor has the advantages that the preparation method is simple, the mechanical strength is high, and the lasting scale inhibiting effect is realized

Polymer nanocomposites PE/PE-g-MA/EPDM/nanoZnO and TiO2 dynamically crosslinked with sulphur and accelerators

Abstract: Nanocrosslinked elastic-plastic nanocomposites are blends that combine economically and performant properties of at least two polymers (elastomer and plastomer) and nanoparticles in a single product. In these blends the elastomeric phase is crosslinked in the thermoplastic melt blending under conditions of thermodynamic technology. This paper presents the development of multiphase elastic-plastic polymeric nanocomposites, dynamically crosslinked, reinforced with nanoparticles for products used in food and pharmaceutical domain, a new variety of composite material based on elastomer (ethylene-propylene-ter-polymer rubber - EPDM) and nanofiller (ZnO and TiO2) dispersed in the plastomer matrix(high density polyethylene-HDPE). Elastomers and nanofiller by nanometric dispersion in plastomer matrix have led to obtaining a performant polymer material with multifunctional characteristics (rubber and thermoplastic) and processing properties specific to plastics. Also, the elastomer was dynamically cross-linked in the plastomer matrix, during processing, by classic vulcanization system with sulfur and accelerators. Accelerators used, namely tert-butyl-2-benzothiazyl sulphenamide -Vulkacit NZ and benzothiazyl-2-dicyclohexyl sulphenamide - Vulcacit DZ. The crosslinking method is ecological, without release of aromatic nitrosamines, which are carcinogenic in the crosslinking process. Obtained composites were physical-mechanical characterized by standard methods specific to plastics.

High-heat-reflection type plastomer modified asphalt waterproof roll and production process thereof

Abstract: The invention provides a high-heat-reflection type plastomer modified asphalt waterproof roll The waterproof roll sequentially comprises a heat reflection layer, a plastomer modifier asphalt layer, a polyester reinforcement layer, a plastomer modified asphalt layer, a non-cured rubber asphalt waterproof coating layer and an isolation layer from upper surface to lower surface The waterproof roll has the advantages of being higher in heat reflectivity and reflective rate, more durable in waterproof performance and higher in high temperature resistance and ageing resistance compared with an ordinary mineral aggregate reflection material

Process for obtaining low volatile plastomers

Abstract: A process for reducing the volatile organic compound content of granular plastomers having a density of equal to or lower than 883 kg/m 3 and a MFR 2 of 1 00.0 g/1 0 min or lower (ISO 1133 at 2.16 kg load and 190 °C), to below 65 ppm (VOC, VDA277), the process comprising the steps of providing a granular raw plastomer in a treatment vessel, the granular raw plastomer having a density of equal to or lower than 883 kg/m 3 , and a MFR 2 of 1 00.0 g/1 0 min or lower (ISO 1133 at 2.16 kg load and 190 °C), and a volatile organic compound content (VOC, VDA277) of above 150 ppm, subjecting said granular raw plastomer to a gasflow within the range of 30 m 3 /(h t) to 150 m 3 /(h t) for an aeration time of less than 96 hours, whereby the gas has a minimum temperature of at least 26 °C measured at a gas inlet of the treatment vessel and a maximum temperature of 4 °C below the Vicat temperature (10 N, ISO 306) of the granular raw plastomer or 35 °C measured at the gas inlet of the treatment vessel, whatever value is lower; and recovering the granular plastomer.

Polymer composition with improved paint adhesion

Abstract: The invention is directed at a polypropylene composition comprising a heterophasic propylene copolymer, a plastomer and an inorganic filler. Furthermore, the invention is directed at an article comprising the polypropylene composition and the use of the polypropylene composition to improve the adhesion performance of an article.

Highly resistance forces down heat transmission aluminum and moulds fan -type material and fan frame combination section bar and fan club combination section bar

Abstract: The utility model relates to a combination section bar technical field is a highly resistance forces down heat transmission aluminum and moulds fan -type material and fan frame combination section bar and fan club combination section bar, the highly resistance lowers heat transmission aluminum and moulds the fan -type material including fan material body, and fan material body is aluminium lining and fan material plastomer in the fan material, it is fixed with the forked tail strengthening rib to follow the circumference interval outside the aluminium lining in a material, aluminium lining and forked tail strengthening rib external fixation have a material plastomer in a material, be equipped with at least one resistance to compression chamber in a material plastomer, be fixed with the resistant layer of waiting respectively in an upper end of material plastomer and lower extreme, the utility model has the advantages of reasonable and compact structure, convenient to use, the aluminium lining was inseparabler with the bonding of fan material plastomer in the forked tail strengthening rib can make a material, improved the firmness, can gain in strength and the anti -wind piezotropy in the resistance to compression chamber, improve disconnected hot effect, the resistant layer of waiting can promote weather resistance and superficial hardness, fan frame combination section bar adopts three seal structure with fanning club's combination section bar, and the security is high, and sealing performance is also better.

Crosslinked polymer composition for cable accessories

Abstract: A crosslinked polymer composition based on a plastomer, which is suitable for producing at least one layer of cable accessories like cable joints, bushings or terminations; its use for preparing such a layer and the cable accessory comprising the composition.

Oil cup for elevator

Abstract: The utility model provides an oil cup for elevator, includes oil cup plastomer, M510 screw, the oil cup plastomer forms oil cup for elevator's flourishing oil vessel, install oil cup cap on the top of oil cup plastomer, the felt has been placed in the oil cup plastomer, the crimping has the clamp plate on the felt, it has the through -hole to open on the clamp plate, the M510 screw passes the through -hole of clamp plate just connects soon on the oil cup plastomer, threading needle is installed to a side in the oil cup plastomer, threading needle's needle point pierces in the bottom of felt, be connected with big support on the bottom plane of oil cup plastomer. The utility model discloses a capacity of oil cup plastomer is 3 times of common oil cup capacity, makes the fuel delivery of oil cup plastomer improve 3 times, and simple structure, the transparency height of oil cup plastomer are convenient for maintainer and are observed the oil mass and change simultaneously, have reduced maintainer's dimension and have protected the degree of difficulty and number of times, have also reduced the maintenance cost of elevator.

Shield constructs with weighing apparatus shield mud integration configuration device

Abstract: The utility model discloses a shield constructs with weighing apparatus shield mud integration configuration device, including flowing plastomer agitator tank, spiral shell sucker -rod pumping, variable frequency control cabinet, motor, centrifugal pump and plasticizing agent mud storage tank, motor drive connect in the (mixing) shaft of plastomer agitator tank flows, flow the plastomer agitator tank communicate in spiral shell sucker -rod pumping's import, spiral shell sucker -rod pumping's export communicates in a class plastomer output tube, plasticizing agent mud storage tank intercommunication the import of centrifugal pump, the export of centrifugal pump communicates in the plasticizing agent output tube, spiral shell sucker -rod pumping and centrifugal pump are all connected in variable frequency control cabinet, it is equipped with check valve and helical blade in proper order to flow the interior direction along the liquid flow of plastomer output tube, the plasticizing agent output tube communicate in its delivery outlet flows the plastomer output tube and being located between check valve and the helical blade. The utility model discloses realize stirring, mixture, the transportation of weighing apparatus shield mud material, the integration and the serialization of pump sending, efficiency is higher.

Preparation method of soft and high-gloss type PP-BCFs (polypropylene-bulked continuous filaments)

Abstract: The invention relates to a preparation method of soft and high-gloss type PP-BCFs (polypropylene-bulked continuous filaments). The method comprises the following steps: A, premixing: preparing toughening/softening modifier granules from polypropylene random copolymer plastomer and propylene-based elastomer granules by adding the materials to a high-speed mixer and uniformly mixing the materials; preparing high-gloss PP powder from a composite nucleating agent, a composite anti-aging agent and a dispersion lubricant by premixing the materials in the high-speed mixer, adding powdery PP and mixing the materials uniformly at a high speed; B, spinning: processing the two premixes with a metering screw, adding the premixes in a certain ratio to a BCF spinning unit directly, and obtaining the soft and high-gloss type PP-BCFs with a conventional PP-BCF spinning technology. A product prepared with the method has soft handfeel close to that of nylon 6 and has good rebound resilience and high gloss, and a carpet woven from the soft and high-gloss type PP-BCFs has better soft comfort and high-gloss decorative performance.

Polyethylene and propylene wax for hot melt adhesive

Abstract: The invention provides a polyolefin composition comprising a) 60 to 99 wt% of a polyethylene plastomer, wherein said polyethylene is a copolymer of ethylene and one or more C 3 -C 12 α-olefins, having a density of less than 904 kg/m 3 ; and b) 1 to 40 wt% of a polypropylene copolymer wax having a melt flow rate (MFR) at 230 °C/2.16 kg of more than 400 g/10min.