摘要:
Procédé de fabrication d'une pièce en plastique pour véhicule automobile, ledit procédé comprenant l'étape suivante : a) une étape de mise en forme d'un matériau comprenant un mélange homogène d'un polymère thermoplastique et d'un phosphite pour obtenir une pièce ayant une surface ; et b) une étape de flammage de tout ou partie de ladite surface. L'invention porte également sur l'utilisation d'un phosphite pour la fabrication de pièces en plastiques et notamment de pièces automobiles ainsi que sur une composition comprenant au moins un polymère thermoplastique et au moins un phosphite.
摘要:
Process for manufacturing a composite automobile part by overmoulding, over at least one surface of an insert (1) comprising a first plastic material, a layer of a second thermoplastic material, said process comprising the following successive steps : • a) a step of positioning said insert (1) in a mould, and • b) a step of moulding said second thermoplastic material over said insert; at least one of said first and second materials comprising an additive, said additive comprising a polymer to which carboxylic anhydride monomers are grafted. Said first and second materials being respectively based on polyamide and based on polypropylene, or vice versa and said second material comprising talc as mineral filler.
摘要:
This process is intended to recover polypropylene and polyethylene that are not filled or that are less than 20% filled in a mixture (12) of fragments (14) of materials obtained directly by shear milling of articles. It comprises a first step of milling the fragments of the mixture (12) by means of a hammer mill (16) equipped so as to cause the fragments of the mixture (12), mainly consisting of polyethylene and polypropylene fragments, to break into grains, so that they retain dimensions above a predetermined threshold and a second step of separation by screening to extract the fragments having dimensions above the predetermined threshold.
摘要:
The invention concerns a plastic part for motor vehicle comprising polypropylene reinforced with non-recycled glass fibers, comprising between 15 and 25 % of polypropylene reinforced with non-recycled glass fibers.
摘要:
Élément absorbeur 1 pour véhicule automobile, comprenant une pièce d'absorption 3 en un matériau polymère moulé par injection, ladite pièce d'absorption 3 présentant une incompressibilité inférieure ou égale à 20 %, de préférence inférieure ou égale à 15 %, encore plus préférentiellement inférieure ou égale à 10%, et encore plus préférentiellement égale à environ 5 %.
摘要:
The invention relates to a method for manufacturing a composition which consists of placing a product containing mostly polypropylene having a controlled fluidity of less than 10 g / 10 min. in contact with highly fluid polypropylene and a polymer grafted by maleic anhydride.
摘要:
The method for producing a composition comprises the following steps: -mixing at least one oxidant with a first product comprising a first majority polyolefin; -adding a second product comprising a second majority polyolefin to the mixture, the nature of the second polyolefin being different to the nature of the first polyolefin and an antioxidant; -adding at least one compatibiliser of the first and second polyolefins to the mixture.
摘要:
The invention relates to a method for producing a motor vehicle part (10) made of a plastic material, said method comprising a step of spraying a product, and the part comprising an area to be protected during the spraying. The method comprises the following steps: applying a fluid material forming a temporary masking layer on the area to be protected, said step being carried out automatically; spraying the product onto the part (10); and removing the temporary masking layer.