This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (M.sub.e). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCID.sub.i), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm.sup.3, a polydispersity (M.sub.w/M.sub.n) from about 2 to about 25 and a CDBI.sub.50 from about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCID.sub.i.

This disclosure relates to ethylene interpolymer product having intermediate branching. Intermediate branching was defined as branching that was longer than the branch length due to comonomer and shorter than the entanglement molecular weight (M.sub.e). Intermediately branched ethylene interpolymer products were produced in a continuous solution polymerization process employing an intermediate branching catalyst formulation. Intermediately branched ethylene interpolymer products were characterized by a Non-Comonomer Index Distribution (NCID.sub.i), a melt index from 0.3 to 500 dg/minute, a density from 0.858 to 0.965 g/cm.sup.3, a polydispersity (M.sub.w/M.sub.n) from about 2 to about 25 and a CDBI.sub.50 from about 10% to about 98%. A method based on triple detection cross fractionation chromatography (3D-CFC) was disclosed to measure NCID.sub.i.

A hybrid polymer-matrix composite is described, containing between 10.0% and 45.0% by weight of cellulosic fiber up to 3.0 mm long and with a maximum moisture content of 5.0%; between 5.0% and 40.0% by weight of synthetic fiber up to 4.0 mm long and compatibilizing additives, said constituents being homogenized directly in the twin-screw extruder, with each reinforcing fiber entering via a specific feeder, to be adjusted to the temperature and shearing applied to the reinforcing fibers, guaranteeing the correct dispersion of the fiber for encapsulation by the polymer matrix, optimizing interface interactions and perfect homogenization.

A method for embedding a first component in a high molecular weight second component is disclosed. Embedded high-molecular-weight compositions are also disclosed.

The invention relates to the technical field of composites, in particular to a high-toughness and high-strength wood-plastic composite and a preparation method thereof. The wood-plastic composite is prepared from the following preparation raw materials in parts by mass: 30-50 parts of wood flour, 11-20 parts of high molecular weight polyethylene, 30-52 parts of polypropylene and 2-10 parts of an interface modifier. Polypropylene is used as a main component of a plastic matrix; high molecular weight polyethylene is used as a secondary component of the plastic matrix and has a toughening effect; wood flour is used as a filler to improve the strength of the wood-plastic composite; the interface modifier can improve the interface bonding between the wood flour and the plastic matrix, and all components have a synergistic effect, so that the obtained wood-plastic composite has high toughness and high strength.

The invention relates to the technical field of composites, in particular to a high-toughness and high-strength wood-plastic composite and a preparation method thereof. The wood-plastic composite is prepared from the following preparation raw materials in parts by mass: 30-50 parts of wood flour, 11-20 parts of high molecular weight polyethylene, 30-52 parts of polypropylene and 2-10 parts of an interface modifier. Polypropylene is used as a main component of a plastic matrix; high molecular weight polyethylene is used as a secondary component of the plastic matrix and has a toughening effect; wood flour is used as a filler to improve the strength of the wood-plastic composite; the interface modifier can improve the interface bonding between the wood flour and the plastic matrix, and all components have a synergistic effect, so that the obtained wood-plastic composite has high toughness and high strength.

Methods for forming polyolefin nanocomposite precursor compositions are provided. In embodiments, such a method comprises mixing a polyolefin, unmodified graphite, and a peroxide crosslinker via solid-state shear pulverization under conditions to form a polyolefin nanocomposite precursor composition comprising the polyolefin; exfoliated, unmodified graphite dispersed throughout the polyolefin; and unreacted peroxide crosslinker dispersed throughout the polyolefin, wherein the polyolefin is polyethylene, a copolymer of polyethylene, or combinations thereof. Methods of forming crosslinked polyolefin nanocomposites, the polyolefin nanocomposite precursor compositions, and crosslinked polyolefin nanocomposites are also provided.

Methods for forming polyolefin nanocomposite precursor compositions are provided. In embodiments, such a method comprises mixing a polyolefin, unmodified graphite, and a peroxide crosslinker via solid-state shear pulverization under conditions to form a polyolefin nanocomposite precursor composition comprising the polyolefin; exfoliated, unmodified graphite dispersed throughout the polyolefin; and unreacted peroxide crosslinker dispersed throughout the polyolefin, wherein the polyolefin is polyethylene, a copolymer of polyethylene, or combinations thereof. Methods of forming crosslinked polyolefin nanocomposites, the polyolefin nanocomposite precursor compositions, and crosslinked polyolefin nanocomposites are also provided.

The present invention discloses amethod for preparing a nanocomposite material for toe cap production. The nanocomposite material is made of graphene, carbon nanotubes, fiber composition, a silane coupling agent, acetic acid, acrylate rubber, a dispersant, polyethylene resin, nano-silicon carbide, calcium stearate, zinc stearate, talcum powder, modified boron nitride, a curing agent and other materials. The preparation method is convenient and simple and is suitable for large-scale production; the nanocomposite material has high toughness and strength and good water resistance, wear resistance and aging resistance; all materials have a good combination effect with the fiber composition, therefore the nanocomposite materil has good mechanical properties and a light weight.

The present invention discloses amethod for preparing a nanocomposite material for toe cap production. The nanocomposite material is made of graphene, carbon nanotubes, fiber composition, a silane coupling agent, acetic acid, acrylate rubber, a dispersant, polyethylene resin, nano-silicon carbide, calcium stearate, zinc stearate, talcum powder, modified boron nitride, a curing agent and other materials. The preparation method is convenient and simple and is suitable for large-scale production; the nanocomposite material has high toughness and strength and good water resistance, wear resistance and aging resistance; all materials have a good combination effect with the fiber composition, therefore the nanocomposite materil has good mechanical properties and a light weight.