A method for forming a carbon fiber-reinforced polymer matrix composite by distributing carbon fibers or nanotubes into a molten polymer phase comprising one or more molten polymers; and applying a succession of shear strain events to the molten polymer phase so that the molten polymer phase breaks the carbon fibers successively with each event, producing reactive edges on the broken carbon fibers that react with and cross-link the one or more polymers. The composite shows improvements in mechanical properties, such as stiffness, strength and impact energy absorption.

The present invention relates to a moulding compound containing: A) at least one polymer selected from the group consisting of polycarbonate and polyester carbonate; B) a polymer containing B1) at least one rubber-modified vinyl(co)polymer containing B1.1) 80 to 95 wt. %, based on B1, of at least one vinyl monomer and B1.2) 5 to 20 wt. %, based on B1, of one or more rubber-elastic polybutadiene-containing graft foundations, wherein B1 contains polybutadiene-containing rubber particles, which are grafted with the vinyl monomers B1.1 and contain inclusions of vinyl(co)polymer consisting of the vinyl monomers B1.1, and a vinyl(co)polymer matrix which consists of the vinyl monomers B1.1 and is not bonded to these rubber particles and not enclosed in rubber particles, and optionally B2) further rubber particles, grafted with vinyl monomers, from B2.1) 5 to 75 wt. %, based on B.2, of at least one vinyl monomer grafted onto B2.2) 25 to 95 wt. %, based on B2, of one or more rubber-elastic graft foundations, wherein the weight ratio of the components B1 to B2 is at least 5:1; C) a master batch, which is solid at room temperature, containing C1) one or more copolymers containing structural units derived from an olefin and structural units derived from a polar comonomer; C2) a vulcanised silicone elastomer. The invention also relates to a method for preparing the moulding compound, to the use of the moulding compound for producing moulded bodies, and to the moulded bodies themselves.

The invention relates to a method for recycling respiratory protection masks comprising a plurality of layers manufactured from a single thermoplastic polymer chosen from polypropylene, polyethylene terephthalate, polylactic acid, homopolymers and copolymers of polyamide 6 (PA6) and long-chain polyamides such as PA11 or PA12, and comprising a filtration layer made of polyvinylidene fluoride.

Described are articles including treads and/or other tire components that are formed at least in part by rubber compositions having solid agglomerated material comprising disaggregated carbon nanotubes. Such rubber compositions include a diene rubber component and a solid agglomerated material comprising disaggregated carbon nanotubes that consist of a continuous network of carbon nanotubes that contains 1) voids and 2) aggregates of carbon nanotubes having a mean size d.sub.50 of less than 5 μm, the voids and the aggregates together in an amount that is less than 60% of a predetermined surface area, as determined by electron microscopy imagery analysis, the remainder being the disaggregated carbon nanotubes in the continuous network that do not comprise a clearly defined shape.

The masterbatch contains a black pigment and a masterbatch thermoplastic resin, the masterbatch satisfying the following conditions: (Conditions) when a resin plate is produced by kneading 100 parts by weight of polypropylene having a melt flow rate of 30 g/10 min (JIS K7210:1999) and a density of 0.9 g/cm.sup.3 (JIS K7112:1999) with respect to 3 parts by weight of the masterbatch and subjecting the mixture to injection molding using a mold polished by a coated abrasive with a particle size of #800 (JIS R6001:1998), a* values and b* values of a surface of the resin plate in the L*a*b* color system satisfy specific conditions.

A method for producing a rubber wet masterbatch includes mixing a rubber latex solution and a coagulant with a carbon black-containing slurry aqueous solution in which a carbon black is dispersed in water, to produce a carbon black-containing rubber latex aqueous solution having a pH of 7 to 8.5; adding additional coagulant to the carbon black-containing rubber latex aqueous solution obtained to produce a carbon black-containing rubber coagulum; and dehydrating and drying the carbon black-containing rubber coagulum obtained to produce a rubber wet masterbatch, wherein a rubber component contained in the rubber latex solution is added at an addition rate of 10 g/min or more and 100 g/min or less and the part of the coagulant is added at an addition rate of 10 mmol/min or more and 100 mmol/min or less per 100 g of the carbon black contained in the carbon black-containing slurry aqueous solution.

Provided is a method with which a biodegradable polyester film containing polyhydroxyalkanoate can be stably produced by film blowing under practical processing conditions. A method for producing a biodegradable polyester film containing a biodegradable aliphatic polyester (A) and a fatty acid amide (B) by film blowing, the biodegradable aliphatic polyester (A) containing polyhydroxyalkanoate, the method including: a step (I) of dry-blending the biodegradable aliphatic polyester (A) with a masterbatch containing the fatty acid amide (B) and a base material resin; and a step (II) of subjecting the mixture obtained in the step (I) to film blowing.

A vulcanizing agent-modified graphene prepared through an in-situ chemical deposition process and a controllable crosslinked natural rubber composite containing the same. In the preparation of the vulcanizing agent-modified graphene, graphene oxide is coated on a spherical thermal-conductive functional particle through the chemical bonding to obtain a 3D graphene particle; and a vulcanizing agent is adsorbed on the 3D graphene particle through π-π conjugation by an in-situ chemical deposition process to obtain a vulcanizing agent-modified graphene particle. Further, the vulcanizing agent-modified graphene particle is mixed with natural rubber latex, and undergoes synergistic coagulation in water to form a graphene masterbatch, which is further processed into the controllable crosslinked natural rubber composite by adding a certain amount of natural rubber block, rubber additive and reinforcing filler.

Stabilizer compositions having a stabilizing amount of at least one co-active agent; an ultraviolet light absorber chosen from an ortho-hydroxy benzophenone, and/or an ortho-hydroxyphenyl benzotriazole; and a hindered amine light stabilizer, are provided herein, along with masterbatch concentrates containing same, and processes for using same for stabilizing polymeric organic materials to protect against light and thermal degradation due to exposure to UV irradiation.

A method for producing a molding compound having improved surface properties is provided. The method relates to, in particular, a molding compound comprising a polycarbonate and at least one reinforcing filler, preferably selected from the group including titanium dioxide (TiO.sub.2), talc (Mg.sub.3Si.sub.4O.sub.10(OH).sub.2), dolomite CaMg[CO.sub.3].sub.2, kaolinite Al.sub.4[(OH).sub.8|Si.sub.4O.sub.10] and wollastonite Ca.sub.3[Si.sub.3O.sub.9], preferably selected from the group including titanium dioxide (TiO.sub.2) and talc (Mg.sub.3Si.sub.4O.sub.10(OH).sub.2). The total amount of reinforcing filler is 3 to 20 wt. %, preferably 4.5 to 15 wt. %, each relative to the total mass of the molding compound, the molding compound having improved properties being produced using at least one master batch produced according to the method.