processo para a preparação de nanobiocompósitos reforçados com nanopartículas de celulose tipo nanowhiskers

    公开(公告)号:BRPI1010500A2

    公开(公告)日:2016-01-05

    申请号:BRPI1010500

    申请日:2010-12-23

    Abstract: processo para a preparação de nanobiocompósitos reforçados com nanopartículas de celulose tipo nanowhiskers. a presente invenção refere-se á preparação de nanobiocompósitos reforçados com nanobiofios (nanowhiskers) de celulose e corpos extrudados com propriedades melhoradas, utilizando uma matriz biodegradável que não agrida o meio ambiente. o processo de incorporação destes nanobiofios (nanowhiskers) de celulose de diferentes fontes vegetais para reforço mecânico, de barreira e térmico de matrizes poliméricas biodegradáveis, como o amido, goma xantana, poli(3-hidroxobutirato), poli(ácido lático), poli (e-caprolactona) e poli(butileno-adipato-co-tereftalato) entre outros, além de blendas destas. os nanobiocompósitos podem ser utilizados como, embalagens, além de outras aplicações, os quais originados deste são preparados elos processo como casting ou por extrusão, com propriedades ecânicas, de barreira, térmicas, melhoradas devido à incorporação os nanobiofios.

    43.
    发明专利
    未知

    公开(公告)号:DE4417836A1

    公开(公告)日:1995-11-23

    申请号:DE4417836

    申请日:1994-05-20

    Applicant: LIGNOTOCK GMBH

    Abstract: To produce moulded sections of the same wall thickness, using mixtures of cellulose and/or lignocellulose fibres with more than 20 wt.% of thermal bonding agent, the fibres are initially given a surface preparation to form a slightly compressed fibre matting in sections or as a web, before the bonding agent is applied. The material is heated at least pref. to the softening temp. of the bonding agent, and then compressed to a density for the duration of the crosslinking of the fibre preparation. The heated and compressed material is placed in a press mould at a lower temp. than the material, to be pressed into shape. The bonding material is pref. polypropylene fibres, and phenol resin is used for the fibre preparation. Polyurethane can also be used according to fibre type.

    44.
    发明专利
    未知

    公开(公告)号:ES2121248T3

    公开(公告)日:1998-11-16

    申请号:ES95105467

    申请日:1995-04-11

    Applicant: LIGNOTOCK GMBH

    Abstract: To produce moulded sections of the same wall thickness, using mixtures of cellulose and/or lignocellulose fibres with more than 20 wt.% of thermal bonding agent, the fibres are initially given a surface preparation to form a slightly compressed fibre matting in sections or as a web, before the bonding agent is applied. The material is heated at least pref. to the softening temp. of the bonding agent, and then compressed to a density for the duration of the crosslinking of the fibre preparation. The heated and compressed material is placed in a press mould at a lower temp. than the material, to be pressed into shape. The bonding material is pref. polypropylene fibres, and phenol resin is used for the fibre preparation. Polyurethane can also be used according to fibre type.

    45.
    发明专利
    未知

    公开(公告)号:DE59503046D1

    公开(公告)日:1998-09-10

    申请号:DE59503046

    申请日:1995-04-11

    Applicant: LIGNOTOCK GMBH

    Abstract: To produce moulded sections of the same wall thickness, using mixtures of cellulose and/or lignocellulose fibres with more than 20 wt.% of thermal bonding agent, the fibres are initially given a surface preparation to form a slightly compressed fibre matting in sections or as a web, before the bonding agent is applied. The material is heated at least pref. to the softening temp. of the bonding agent, and then compressed to a density for the duration of the crosslinking of the fibre preparation. The heated and compressed material is placed in a press mould at a lower temp. than the material, to be pressed into shape. The bonding material is pref. polypropylene fibres, and phenol resin is used for the fibre preparation. Polyurethane can also be used according to fibre type.

    Method of Manufacturing Moulded Articles

    公开(公告)号:CA2149391A1

    公开(公告)日:1995-11-21

    申请号:CA2149391

    申请日:1995-05-15

    Applicant: LIGNOTOCK GMBH

    Inventor: NICOLAY ALBERT

    Abstract: To produce moulded sections of the same wall thickness, using mixtures of cellulose and/or lignocellulose fibres with more than 20 wt.% of thermal bonding agent, the fibres are initially given a surface preparation to form a slightly compressed fibre matting in sections or as a web, before the bonding agent is applied. The material is heated at least pref. to the softening temp. of the bonding agent, and then compressed to a density for the duration of the crosslinking of the fibre preparation. The heated and compressed material is placed in a press mould at a lower temp. than the material, to be pressed into shape. The bonding material is pref. polypropylene fibres, and phenol resin is used for the fibre preparation. Polyurethane can also be used according to fibre type.

    PLASTICOS REFORZADOS Y SU MANUFACTURA.

    公开(公告)号:MXPA02007702A

    公开(公告)日:2004-09-10

    申请号:MXPA02007702

    申请日:2001-02-12

    Inventor: COX LYLE V

    Abstract: Una nueva fibra organica de refuerzo para poliester insaturado y otras resinas termoplasticas y termofraguadas ha sido desarrollada a partir de un producto secundario agricola. La fibra de refuerzo confiere ventajas deseables de costo y mecanicas en articulos producidos, por ejemplo, por la industria del poliester-fibra de vidrio. Tambien se describen metodos para producir articulos compuestos, moldeados, que utilizan esta fibra organica de refuerzo, aparatos para producir tales articulos, y metodos para reducir la emision de carbonos organicos volatiles durante la produccion de tales articulos.

    METHOD OF MANUFACTURING MOULDED ARTICLES

    公开(公告)号:CA2149391C

    公开(公告)日:1999-02-23

    申请号:CA2149391

    申请日:1995-05-15

    Applicant: LIGNOTOCK GMBH

    Inventor: NICOLAY ALBERT

    Abstract: Described is a method of manufacturing moulded parts, preferably having the same wall thickness, from mixtures of cellulose and/or lignocellulose fibres with more than 20% by weight of thermal binders, in which the moulded article results from application of heat and pressure to fibre mat prefabricated therefrom. In a first step the fibre mat undergoes preliminary compression as a planar, endless matted fibre fleece, with only a small degree of compression of the fibre composite, the matted fibre fleece containing at least 2% by weight of a binder which cross-links under heat, its "start-off temperature", i.e. the temperature at which cross-linkage begins, being lower than the softening temperature of the thermoplastic binder. The cellulose and/or lignocellulose fibres are provided, before production of the fibre composite, with a surface finish of the cross-linking binder. The fibre mat, slightly compressed in the first step, is in a second step heated in the form of a blank or of a web to at least the start-off temperature of the fibre finish. Compression is carried out before shaping of the moulded article, which is held in this condition of density for the duration of the cross-linkage of the fibre finish. Finally the finally-compressed, preferably planar fibre mat, heated to the softening temperature of the thermoplastic binder, is shaped by the application of pressure to form the finished moulded article, in a press tool whose temperature lies below that of the heated fibre mat.

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