41 results about "Plastomer" patented technology

The invention relates to the technical field of computers, and discloses a rock creep model construction method and device and a rock failure mode determination method. The method comprises the steps of obtaining a data set; samples in the data set comprise input data and output data, the input data comprise creep load holding time, sample rock stress data, initial macroscopic damage data, initial microscopic damage data, long-term strength and a creep starting threshold value, and the output data is a strain true value; fitting the initial rock creep model by using the data set to obtain a final rock creep model; wherein the initial rock creep model comprises at least one of a damaged elastomer strain item, a damaged viscoelastomer strain item and a damaged viscoplastic body strain item; each strain item comprises a macro-micro nonlinear coupling damage item, and the macro-micro nonlinear coupling damage item is generated based on the initial micro damage data and the initial macro damage data. The model constructed by the method can truly reflect the nonlinear mechanical response of the rock mass under the combined action of the multi-scale initial defects.

A system for forming a blister package includes a thermoformable film and a lidding film. The thermoformable film has a thermoformable film exterior layer and a thermoformable film interior layer. The thermoformable film exterior layer includes at least 50% by weight polypropylene. The thermoformable film interior layer includes at least 50% by weight polypropylene and (a) a tackifier and / or (b) a cyclic olefin copolymer. The lidding film includes a lidding film exterior layer, a seal layer, and a lidding film interior layer between the lidding film exterior layer and the seal layer. The lidding film exterior layer includes at least 50% polypropylene. The lidding film interior layer includes at least 50% polypropylene and a tackifier. The seal layer includes a polyolefin plastomer.

The present invention relates to a polymer composition comprising the following components: A) 5 to 35 wt.-% based on the overall weight of the polymer composition of a recycled polyolefin fabric substrate; wherein said fabric substrate is coated with a polyolefin composition comprising the following components: a1) an ethylene based plastomer with a density determined according to ISO 1183-1 in the range of 0.857 to 0.915 g / cm3 and a MFR2 (190° C., 2.16 kg) determined according to ISO 1133 in the range of 0.5 to 30 g / 10 min; and a2) a propylene based plastomer with a density determined according to ISO 1183-1 in the range of 0.850 to 0.910 g / cm3 and a MFR2 (230° C., 2.16 kg) determined according to ISO 1133 in the range of 0.01 to 30 g / 10 min; B) 65 to 95 wt.-% based on the overall weight of the polymer composition of a homopolypropylene or a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1; with the proviso that components A) and B) add up to 100 wt.-%. Furthermore, the present invention relates to use of component A) for increasing the Charpy Notched Impact Strength of component B) and to an article comprising the polymer composition according to the present invention.

The invention relates to the technical field of plastomer modified asphalt preparation, in particular to a preparation method and system of a plastomer modified asphalt waterproof coiled material, and the preparation method comprises the following steps: S1, determining the real-time dosage of a pre-compatible base material; s2, adding the pre-compatible base material, the functional additive and the inorganic filler in stages according to the determined adding amount, and treating by adopting a gradient heating and shearing blending process; s3, feeding the blended modified asphalt into a stirring kettle to complete homogenization treatment in a heat preservation state, and entering a tire base pretreatment process; s4, establishing an infiltration adaptation reference, and entering a dip coating process; s5, preparing a coiled material green body; and S6, the coiled material blank is fed into a three-section independent temperature control cooling roller set to be cooled and shaped, the internal stress of the coiled material is monitored on line, and closed-loop regulation and control are conducted. According to the method, the technical problems of large fluctuation of performance and poor batch consistency of a traditional process are solved, the fluctuation range of core performance between batches of finished products is reduced, and the production stability and the product quality controllability are greatly improved.

A composition suitable for automotive application obtainable by blending at least components (A), (B), (C), (D), (E) and (F): (A) from 5.0 to 40.0 wt.-%, preferably from 7.0 to 37.5 wt.-%, more preferably from 8.0 to 35.0 wt.-% of a first heterophasic propylene copolymer; (B) from 10.0 to 20.0 wt.-%, preferably from 12.5 to 19.0 wt.-%, more preferably from 14.0 to 18.0 wt.-% of a second heterophasic propylene copolymer; (C) from 15.0 wt.-% to 45.0 wt.-%, preferably from 17.5 to 42.5 wt.-%, more preferably from 20.0 to 40.0 wt.-% of a mixed-plastics polypropylene blend; (D) from 2.5 wt.-% to 15.0 wt.-%, preferably from 3.5 to 12.5 wt.-%, more preferably from 4.0 to 11.0 wt.-% of a mixed-plastics polyethylene blend; (E) from 2.5 wt.-% to 15.0 wt.-%, preferably from 3.5 to 12.5 wt.-%, more preferably from 4.0 to 11.0 wt.-% of an ethylene-based plastomer; and (F) from 2.5 wt.-% to 25.0 wt.-%, preferably from 3.5 to 22.0 wt.-%, more preferably from 4.0 to 20.0 wt.-% of an inorganic filler an article comprising the composition as described above or below in an amount of from 90 wt.-% to 100 wt.-%, and the use of the composition as described above or below for injection moulding of articles, preferably automotive articles, more preferably automotive interior articles.

The invention discloses a wear-resistant elastoplastic body quincunx pump molded line and a quincunx pump thereof. The molded line is fixed by an outer rotor, and an inner rotor performs eccentric motion along the inner side of the outer rotor and is formed by conjugate meshing; the molded line of a first worm claw part of the outer rotor consists of an arc section AB, an arc section BC, a transition cubic curve section CD, an involute section DE, a transition cubic curve section EF and an arc section FG; the molded line of the second worm claw part of the inner rotor is composed of an arc section ab, an arc section bc, a transition cubic curve section cd, an involute section de, a transition cubic curve section ef and an arc section fg. The characteristics of accurate conjugate meshing and point contact of the involute are adopted, compared with line contact of other molded lines, friction abrasion between rotors is reduced, the sealing effect between the involute and the inner wall of a pump body is good under the high-pressure conveying working condition, it is guaranteed that the conveying pressure is lasting and stable, pulsation is reduced, and the working efficiency is improved.

The present invention relates to a multilayer polyethylene film comprising in order at least an outer layer, a core layer and a sealing layer, wherein the sealing layer comprises: i) at least 30.0 wt% of a first multimodal linear low density polyethylene terpolymer relative to the total weight of the sealing layer; and ii) at least 10.0 wt% of a first plastomeric body having a density of 910 kg / m3or less (ISO 1183) relative to the total weight of the sealing layer; wherein the core layer comprises: a) at least 8.0 wt% of a second plastomeric body having a density of 910 kg / m3or less (ISO 1183) relative to the total weight of the core layer, or b) at least 8.0 wt% of a multimodal linear low density polyethylene (LLDPE) binary copolymer relative to the total weight of the sealing layer; and c) a second multimodal polyethylene terpolymer. 3 The present invention relates to a multilayer polyethylene film comprising in order at least an outer layer, a core layer and a sealing layer, wherein the sealing layer comprises: i) at least 30.0 wt% of a first multimodal linear low density polyethylene terpolymer relative to the total weight of the sealing layer; and ii) at least 10.0 wt% of a first plastomeric body having a density of 910 kg / m3or less (ISO 1183) relative to the total weight of the sealing layer; wherein the core layer comprises: a) at least 8.0 wt% of a second plastomeric body having a density of 910 kg / m3or less (ISO 1183) relative to the total weight of the core layer, or b) at least 8.0 wt% of a multimodal linear low density polyethylene (LLDPE) binary copolymer relative to the total weight of the sealing layer; and c) a second multimodal polyethylene terpolymer. 3 ​

Packaging comprising a packaging container as well as a multi-layer sealing part, wherein the sealing part has at least one carrier layer and one adhesive layer, the carrier layer consisting of a first polyolefin-based plastic with a first melting temperature, the adhesive layer consisting of a second polyolefin-based elastomer or plastomer with a second melting temperature that is lower than the first melting temperature, wherein the packaging container consists of a third polyolefin-based plastic with a third melting temperature that is higher than the second melting temperature, and has a sealing collar with an essentially planar sealing collar, wherein the adhesive layer of the sealing part adheres to the sealing collar of the packaging container, and wherein the sealing part has an elastic clamping structure in spatial proximity to the sealing collar.

A composition suitable for automotive application obtainable by blending at least components (A), (B), (C), (D) and (E): (A) from 5.0 to 40.0 wt.-%, preferably from 7.0 to 37.5 wt.-%, more preferably from 8.0 to 35.0 wt.-% of a first heterophasic propylene copolymer; (B) from more than 20.0 to 35.0 wt.-%, preferably from 21.0 to 32.5 wt.-%, more preferably from 22.0 to 31.0 wt.-% of a second heterophasic propylene copolymer; (C) from 10.0 wt.-% to 50.0 wt.-%, preferably 12.0 to 47.5 wt.-%, more preferably 14.0 to 46.0 wt.-% of a mixed-plastics polypropylene blend; (D) from 2.5 wt.-% to 15.0 wt.-%, preferably 3.5 to 12.5 wt.-%, more preferably 4.0 to 11.0 wt.-% of an ethylene-based plastomer; and (E) from 2.5 wt.-% to less than 12.5 wt.-%, preferably 3.5 to 12.0 wt.-%, more preferably 4.0 to 11.0 wt.-% of an inorganic filler, an article comprising the composition as described above or below in an amount of from 90 wt.-% to 100 wt.-%, and the use of the composition as described above or below for injection molding of articles, preferably automotive articles, more preferably automotive interior articles.

This invention relates to an asphalt composition comprising modified asphalt and a hydroxyl-functionalized polymer configured to generate a thermally reversible crosslinked network in the composition, wherein the hydroxyl-functionalized polymer is selected from: hydroxyl-functionalized polyolefin thermoplastics, hydroxyl-functionalized polyolefin elastomers, and hydroxyl-functionalized polyolefin plastics.

The application discloses an anticorrosion base film, which comprises a low-friction layer, a transition layer and an adhesive layer in sequence, and the adhesive layer is used for bonding with a metal plate; the low-friction layer comprises an elastomer, a plastic body and silicone master particles; the low-friction layer is used for reducing the friction coefficient of the anticorrosion base film and improving the anticorrosion performance of the anticorrosion base film. The anticorrosion base film has low friction coefficient, can avoid breakage when being applied to a metal laminated plate pressing tile, and can further improve the anticorrosion effect; the production process is simple, one-time forming is adopted, oily and aqueous adhesives are not needed, and the production is completed by using high molecular materials; the anticorrosion base film has the characteristics of resisting tile press wear, having strong bonding force with the metal plate, excellent corrosion resistance and the like.

A method for forming a thermoplastic body having regions with varied material composition and / or porosity. Powder blends comprising a thermoplastic polymer, a sacrificial porogen and an inorganic reinforcement or filler are molded to form complementary parts with closely toleranced mating surfaces. The parts are formed discretely, assembled and compression molded to provide a unitary article that is free from discernible boundaries between the assembled parts. Each part in the assembly has differences in composition and / or porosity, and the assembly has accurate physical features throughout the sections of the formed article, without distortion and nonuniformities caused by variable compaction and densification rates in methods that involve compression molding powder blends in a single step.

A heat-shrinkable bi-oriented, multi-layer laminate is described, the laminate comprising a core layer comprising: 75-85 percent by weight of an ethylene a-olefin polyolefin plastomer polymer, 10-20 percent by weight of a linear low density polyethylene (LLDPE) and 1-10 percent by weight of ethylene-based compatibilizer; at least one surface layer comprising: 70-80 percent by weight of an ethylene a-olefin polyolefin plastomer polymer, and 10-20 percent by weight of ethylene-based compatibilizer; and at least one inner layer between at the least one surface layer and the core layer, the at least one inner layer comprising: less than 70 percent by weight of an ethylene a-olefin polyolefin plastomer polymer, and 10-20 percent by weight of ethylene-based compatibilizer, 10-20 percent by weight of a linear low density polyethylene (LLDPE). Methods of manufacture and use as a food packaging film are provided.

Density is 0.902 g / cm 3 Ethylene copolymer compositions having a density of 0.902 g / cm or less exhibit fast crystallization behavior. The ethylene copolymer compositions include a first ethylene copolymer, a second ethylene copolymer, and optionally a third ethylene copolymer, wherein the first ethylene copolymer has a number average molecular weight greater than the number average molecular weight of the second ethylene copolymer. The ethylene copolymer compositions can be used to form monolayer and multilayer films.

The invention discloses a multi-layer composite hot melt adhesive film and a preparation process thereof and a composite board, and relates to the field of adhesives, the multi-layer composite hot melt adhesive film comprises a low-temperature layer, a high-temperature layer and a core layer, the low-temperature layer is used for being bonded with PET, the high-temperature layer is used for being bonded with metal, the core layer is used for being bonded with the low-temperature layer and the high-temperature layer, the low-temperature layer is a modified polyolefin hot melt adhesive film, and the high-temperature layer is a modified polyolefin hot melt adhesive film. The high-temperature layer is a polyolefin hot melt adhesive film; the core layer comprises the following raw materials in parts by weight: 26-32 parts of ethylene-vinyl acetate copolymer; 40 to 48 parts of an amorphous plastomer APAO; 2-4 parts of a polypropylene-alkenyl-containing epoxy compound copolymer; 5-8 parts of nylon type copolyamide; 1 to 3 parts of a silane coupling agent KH-550; the nylon type copolyamide is a polymer of nylon 12 and caprolactam. According to the prepared hot melt adhesive film, the PET layer and the metal plate are bonded together, the bonding strength is high, and water resistance, high temperature resistance and corrosion resistance are achieved.

A composition suitable for automotive applications can be obtained by blending at least components (A), (B), (C), (D), and (E): (A) 5.0 to 40.0 wt%, preferably 7.0 to 37.5 wt%, more preferably 8.0 to 35.0 wt%, of a first multiphase propylene copolymer; (B) greater than 20.0 to 35.0 wt%, preferably 21.0 to 32.5 wt%, more preferably 22.0 to 31.0 wt%, of a second multiphase propylene copolymer; and (C) 10.0 wt% to 50.0 wt%, preferably 12.0 to 47.5 wt%, more preferably 14.0 to 46.0 wt%. 0 wt% of a mixed plastic polypropylene blend; (D) 2.5 wt% to 15.0 wt%, preferably 3.5 to 12.5 wt%, more preferably 4.0 to 11.0 wt% of a vinyl-based plastic; and (E) 2.5 wt% to less than 12.5 wt%, preferably 3.5 to 12.0 wt%, more preferably 4.0 to 11.0 wt% of an inorganic filler; an article comprising 90 wt% to 100 wt% of the composition described above or below; and the use of the composition described above or below for injection-molded articles, preferably automotive articles, more preferably automotive interior articles.

This disclosure relates to a sealant film comprising one or more polypropylene layers and a sealing layer comprising a polypropylene terpolymer and one or more polymers selected from polybutene-1 or plastomer. The sealant film is a mechanically oriented (MDO) film comprising at least 95% by weight of polypropylene. Also disclosed are multilayer packaging films comprising such sealant films, and hermetically sealed packages (e.g., retort pouches) formed from multilayer packaging films.

A composition of a flexible extrude, wherein the composition includes about 60 to 90 weight percent of a propylene-based elastomer with a density between about 0.857 g / cm3 and 0.902 g / cm3, about 10 to 40 weight percent of an ethylene-based plastomer resin, wherein the total haze percentage as measured by ASTM D1003-A is between 40 percent to 80 percent, and wherein the tensile modulus as measured by ISO 37 is between 8 MPa and 11 MPa.

A composition comprising (A) 40 to 80 wt.-% of a first heterophasic composition (HECO1); (B) 7 to 30 wt.-% of a second heterophasic composition (HECO2); (C) 0 to 12 wt.-% of an HDPE; (D) 2 to 12 wt.-% of a plastomer; and (E) 7 to 25 wt.-%, of talc; wherein HECO1 has a Tm of 150 to 159° C., an MFR2 of 20.0 to 120 g / 10 min, a CRYSTEX crystalline fraction of 79.0 to 91.0 wt.-%, a CRYSTEX soluble fraction of 9.0 to 21.0 wt.-%, and an ethylene content of 1.5 to 6.5 mol.-%; HECO2 has an MFR2 of 2.0 to 10.0 g / 10 min, a CRYSTEX crystalline fraction of 70.0 to 82.0 wt.-%, a CRYSTEX soluble fraction of 18.0 to 30.0 wt.-% and an ethylene content of 9.0 to 20.0 mol.-%; the plastomer being a C2 / C8 or a C2 / C4 copolymer having a density of 850 to 900 kg / m3.

A composition suitable for automotive applications obtainable by blending at least components (A), (B), (C) and (D) (A) 15 wt.-% to 45 wt.-%, preferably 18 to 44 wt.-%, more preferably 20 to 40 wt.-% of a mixed-plastics polypropylene blend, wherein the mixed-plastic polypropylene blend (A) is a recycled material originating from post-consumer waste or industrial waste and in which a material is present selected from the group consisting of polystyrenes, polyamides, polyesters, wood, paper, limonene, aldehydes, ketones, fatty acids, metals, and long term decomposition products of stabilizers; (B) 15 wt.-% to 45 wt.-%, preferably 20 to 44 wt.-%, more preferably 35 to 43 wt.-% of a heterophasic propylene copolymer; (C) 10 wt.-% to 25 wt.-%, preferably 11 to 24 wt.-%, more preferably 12 to 23 wt.-% of an ethylene-based plastomer; and (D) 10 wt.-% to 25 wt.-%, preferably 11 to 22 wt.-%, more preferably 12 to 20 wt.-% of an inorganic filler.

The application discloses a preparation method of basalt fiber reinforced thermoplastic resin intermediate material and belongs to the technical field of composite material preparation. The basalt fiber and thermoplastic resin fiber are used as raw materials, and the preparation method comprises the following steps: fiber opening, plasma and silane coupling agent composite surface modification, weighing type closed loop quantitative feeding, multi-stage carding cross-laying, constant tension needle punching forming, three-zone independent temperature control melting impregnation, gradient cooling shaping and online detection closed loop regulation. The mixed woven felt intermediate material is prepared. The interface modification is used to improve the bonding force between the fiber and the resin. The precise feeding and constant needle punching are used to ensure the uniformity of the felt blank. The partition temperature control, deflection compensation, pressure and gradient cooling are used to realize sufficient impregnation and size stability. The method can be suitable for various thermoplastic systems such as PP, PA6 and low shrinkage PET, can meet the continuous and large-scale production requirements, and solves the problems of poor interface bonding, uneven impregnation, insufficient size stability and low consistency of mass production in the traditional process.

Heat-sterilizable multilayer film having high low-temperature impact strength, comprising(a) a first polymer layer (A) containing polypropylene homopolymer modified with impact modifier;(b) a second polymer layer (B) containing:B1) 15% to 45% by weight of polypropylene terpolymer and / or polyethylene elastomer,B2) 20% to 30% by weight of styrene block copolymer elastomer;B3) 20% to 40% by weight of propylene-ethylene block copolymer;B4) 15% to 30% by weight of polybutene-1 plastomer and / or polyethylene composite (Tm>125° C., density 945 to 960 kg / m3); and(c) a central polymer layer (C) containing:C1) 20% to 30% by weight of styrene block copolymer elastomer;C2) 15% to 30% by weight of polyethylene elastomer;C3) 40% to 65% by weight of propylene-ethylene block copolymer;C4) 0% to 20% by weight of polypropylene terpolymer, random propylene-ethylene copolymer and / or polybutene-1 plastomer,and also method for producing said film, container produced therefrom, and use of said film for medical purposes.

Packaging comprising a packaging container and a multilayer closure part, wherein the closure part has at least one carrier layer and an adhesive layer, the carrier layer being a first polyolefin-based plastic with a first melting temperature, the adhesive layer being a second polyolefin-based elastomer or plastomer with a second melting temperature which is lower than the first melting temperature, the packaging container being a third polyolefin-based plastic with a third melting temperature which is higher than the second melting temperature, and a closure collar with a substantially planar closure band, wherein the adhesive layer of the closure part adheres to the closure collar of the packaging container, and wherein the closure part has an elastic clamping structure in spatial proximity to the closure band.

The invention discloses a construction method of a soft clay anisotropy de-structured elastic-plastic model, and relates to the technical field of geotechnical engineering. The method comprises the following steps: taking an anisotropic elastic-plastic constitutive model S-CLAY1 as a first soft clay anisotropic de-structured elastic-plastic model; constructing a calculation formula of effective stress increment and introducing the first soft clay anisotropy de-structured elastic-plastic model to obtain a second soft clay anisotropy de-structured elastic-plastic model; introducing a size hardening rule into the second soft clay anisotropy de-structured elastic-plastic model to obtain a third soft clay anisotropy de-structured elastic-plastic model; determining conventional parameters and partial softening parameters; and determining the soft clay anisotropy de-structured elastic-plastic model based on the plastic body strain conventional parameter, the plastic body strain partial softening parameter and the plastic body strain third soft clay anisotropy de-structured elastic-plastic model. According to the method, bonding does not need to be considered when soft clay is modeled, so that the modeling difficulty is reduced.

The application discloses a silica gel supported nickel-vanadium bimetallic catalyst and a preparation method and application thereof, and relates to a preparation method of a silica gel supported nickel-vanadium bimetallic catalyst, which comprises the following steps: impregnating and stirring silica gel and a vanadium source in a first solvent to obtain impregnated silica gel, performing heat treatment on the impregnated silica gel to obtain a solid powder, and loading a nickel metal complex shown in formula 2 on the solid powder to obtain the catalyst. The application improves the reaction activity of the nickel metal complex, and can be used for producing wide distribution / bimodal polyolefin plastomer (POP), so that high molecular weight end insertion is increased and low molecular weight end insertion is reduced under the premise of ensuring wide molecular weight distribution, and the mechanical properties of the polymer are improved.

The present invention relates to a tubular film intended to form a stretch hood. The tubular film has a core layer and at least one skin layer. The core layer comprises, by weight of the core layer: 30-80% of recycled polyethylene; 10-35% of a polymer booster selected from a thermoplastic elastomer and a polyolefin plastomer; and 0-40% of virgin ethylene polymer and / or virgin ethylene based copolymer.

The present invention relates to a polypropylene composition particularly suitable for automotive applications, said polypropylene composition comprising two heterophasic propylene copolymers having different melt flow rates, a vinyl plastomer, a high density polyethylene and an inorganic filler.

The invention belongs to the field of skin membranes, and particularly relates to an anti-puncture skin membrane and a production process thereof. Comprising a heat sealing layer, a blocking layer and an anti-puncture outer layer which are sequentially stacked, the heat sealing layer is prepared by blending 70wt% of linear low-density polyethylene and 25wt% of an ethylene-octylene copolymer plastomer; the thickness is 30 microns; the barrier layer is an ethylene-vinyl alcohol copolymer layer or a polyamide layer; the puncture-resistant outer layer is prepared by blending 50wt% of high-density polyethylene, 30wt% of metallocene polyethylene and 20wt% of modified polyolefin elastomer; the total thickness of the puncture-resistant skin membrane is 50-150 microns, and the thickness of the puncture-resistant outer layer accounts for 40%-60% of the total thickness; according to the invention, a novel skin film with ultrahigh puncture resistance, excellent low-temperature toughness and self-repairing potential is prepared by introducing a'rigid aromatic ring-dynamic carbamate bond 'synergistically modified polyolefin elastomer.