摘要:
The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.
摘要:
The present invention relates to a process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix, wherein said process comprises the steps of: a) mixing a refined aqueous pulp suspension with a water suspension of thermoplastic fibers into a composition, b) forming the composition into a fiber web, c) dewatering the fiber web, d) drying the fiber web, and e) heating and pressing the dried fiber web from step d) to melt said thermoplastic fibers into a thermoplastic matrix and form a composite article.
摘要:
The present invention provides a method for producing a microporous film, including: preparing a resin composition containing polypropylene (PP) as a resin component and containing from 0.01 to 20 parts by weight of a chemically modified cellulose or chemically modified cellulose nanofiber per 100 parts by weight of the resin component and from 0.01 to 3 parts by weight of a ²-crystal nucleating agent per 100 parts by weight of the resin component; melt-molding the resin composition into a film-like material in which the crystal phase of a polypropylene component in the resin composition is substantially a ²-crystal phase, and subsequently stretching the film-like material at a temperature of 60 to 160°C, and provides a microporous film.
摘要:
Apparatus for forming a liquid-tight seal across gaps formed between adjacent components of a load-supporting surface useful at an outdoor worksite includes a liquid-impermeable, elongated, seal member configured to be sealing coupled to first and second mats in the load-supporting surface and extend across the gap formed therebetween.
摘要:
The present invention relates to a process for manufacturing a composite article comprising cellulose pulp fibers and a thermoplastic matrix, wherein said process comprises the steps of: a) mixing a refined aqueous pulp suspension with a water suspension of thermoplastic fibers into a composition, b) forming the composition into a fiber web, c) dewatering the fiber web, d) drying the fiber web, and e) heating and pressing the dried fiber web from step d) to melt said thermoplastic fibers into a thermoplastic matrix and form a composite article.
摘要:
A composite material is formed by combining an expandable polymer having a charge with another polymer having an opposite charge to produce. In particular, the composite material can be prepared by combining the polymers with a medium such as and water, and expanding the mixture using a treatment that expands the mixture to produce, for example, insoluble porous foam-like composites.
摘要:
A method for producing a composite material product which has a high rigidity and a high heat deformation temperature and is mainly composed of a wood cellulose filler and olefin series plastic. Calcium oxide is added to a mixture of a wood cellulose filler crushed into a predetermined size, a granular olefin series plastic material and a rigid improving agent mainly consisting of polypropylene modified by maleic anhydride or its derivative. An amount of calcium oxide to be added is calculated so that water of the wood cellulose filler becomes finally 2 - 5 % ( percent weight ). A compound produced by mixing the mixture and calcium oxide is then molded by a molding machine. The polypropylene modified by maleic anhydride has a high degree of modification by maleic anhydride and a small molecular weight.
摘要:
The present invention provides a method for producing a microporous film, including: preparing a resin composition containing polypropylene (PP) as a resin component and containing from 0.01 to 20 parts by weight of a chemically modified cellulose or chemically modified cellulose nanofiber per 100 parts by weight of the resin component and from 0.01 to 3 parts by weight of a β-crystal nucleating agent per 100 parts by weight of the resin component; melt-molding the resin composition into a film-like material in which the crystal phase of a polypropylene component in the resin composition is substantially a β-crystal phase, and subsequently stretching the film-like material at a temperature of 60 to 160°C, and provides a microporous film.
摘要:
The present invention relates to a method of forming a moulded fibrous product, comprising the steps of foaming an aqueous suspension of natural fibres, optionally in combination with synthetic fibres, to provide a first fibrous foam, a surfactant may be added to aid the foaming, feeding the fibrous foam into a mould, mechanically withdrawing a part of the water contained in the foam to produce a solidified, moist fibrous composition, and evaporating water from the solidified, moist fibrous composition to produce a dry fibrous product.
摘要:
A preform for thermoset resin composition molding is provided that upon cure forms a variety of molded and fiber reinforced articles used in a variety of applications such as vehicle components including bed lines, body components, trim, interior components, and undercar components; architectural components such as trim and doors, marine components including hulls, trim, and cockpit pieces; and similar structures in aerospace settings. A novel slurry composition, a novel centrifugal process, or a combination thereof provide superior quality preforms that are created with greater throughput relative to conventional techniques. The inhibition of fiber movement between the time such a fiber contacts the mold, or fibers already in place on the mold, and the time the fibers are set in position provides a superior fiber homogeneity and randomized orientation relative to existing slurry techniques with attributes of low scrap generation, and process flexibility with respect to part shape and fiber material.