摘要:
The invention relates to a method of manufacturing a composite laminate having a plurality of UD layers, i.e., layers of matrix material reinforced with unidirectionally oriented fibres, and at least one inner metal layer, i.e., a metal layer that does not form an outer surface of the laminate, the layers being arranged so as to give a balanced and symmetric laminate. The method comprises passing through a laminating zone, preferably a double-belt press, unidirectionally oriented (UD) fibres provided with not yet consolidated matrix material and consolidating the matrix material. In a first step a non-flowing sandwich laminate of at least three layers is formed, the at least three layers being UD and metal layers, the sandwich laminate being formed by passing UD fibres provided with not yet consolidated matrix material through the laminating zone together with metal foil, and in a second step the non-flowing sandwich laminate is provided on its outer surfaces with UD layers, with additional UD layers optionally being added in subsequent steps.
摘要:
Polyphenylene ether-based lubricant compositions can be improved in regard to anti-wear properties by inclusion of a hydrocarbyl bis(dihydrocarbylphosphate) compound, for example, at up to about 10% by weight. The preferred compounds contain a hydrocarbyl group derived from a monoaromatic diol such as resorcinol or hydroquinone and are diphenylphosphate species.
摘要:
Un copolymère linéaire alterné de monoxyde de carbone et de propylène exempt de liaison ester et éther est formé par la réaction catalysée de monoxyde de carbone et de propylène en milieu solvant cétonique (par exemple, acétone). On peut introduire des groupes terminaux d'acides si on utilise un mélange d'eau et de cétone.
摘要:
Polyurethane foams containing halogenated phosphorus-based flame retardants are protected from scorching by the incorporation therein of an anti-scorch package which comprises a diaryl arylenediamine, the reaction product of a diarylamine and a lower alkyl ketone, and a hindered phenol.
摘要:
Polymeric material comprising an interpenetrating network of a polyol (allyl carbonate), e.g. Nouryset 200, epoxy resin. The polymeric material is prepared by polymerizing 70 to 95 parts by weight of the polyol (allyl carbonate) by radical initiation and polymerizing partially or entirely simultaneously an epoxy resin-forming mixture by acid catalysis. The epoxy resin-forming mixture comprises 10-90 wt.% of (cyclo)aliphatic polyepoxide and 90-10 wt.% of a polyol/anhydride adduct having molecular weight of 500-5000.