摘要:
Rubber compositions having a base masterbatch, the base masterbatch comprising a diene rubber and a solid agglomerated material comprising disaggregated carbon nanotubes consisting of a continuous network of carbon nanotubes, the continuous network comprising 1) voids and 2) aggregates of carbon nanotubes having a d50 mean size of less than 5 μm, the voids and the aggregates together being in an amount that is less than 60% of a predetermined surface area, such percentage as determined by electron microscopy image analysis, the remainder being the disaggregated carbon nanotubes in the continuous network that do not comprise a clearly defined shape and being in an amount that is at least 40% of the predetermined surface area, wherein the base masterbatch has a minimum Mooney viscosity ML(1+4)100 of at least 85 MU; and a cure system.
摘要:
A household appliance component made of a polypropylene based polymeric material having high gloss properties. It is an object of the present invention also a process for producing the above mentioned household appliance component.
摘要:
A masterbatch composition including glass bubbles and a toughening agent in a blend of syndiotactic 1,2-polybutadiene and cis-1,4-polybutadiene is disclosed. The glass bubbles are present in an amount of at least 25 percent by weight, based on the total weight of the masterbatch composition. A method of making a rubber composition from the masterbatch composition is disclosed as well as a rubber composition and vulcanized rubber made from the masterbatch composition. A rubber composition that includes syndiotactic 1,2-polybutadiene, cis-1,4-polybutadiene, a toughening agent that includes at least one of a fluoroplastic or an organic or ceramic fiber, and glass bubbles in an amount up to 25 percent by weight, based on the total weight of the rubber composition, is also disclosed.
摘要:
Resin masterbatch compositions are provided as closed end pellets having a core including at least one additive and an outer layer comprising a polymer encapsulating the core, in which the thickness of the outer layer if from 0.001 mm to 1 cm. A stabilized composition is prepared from an organic material to be stabilized and the resin masterbatch composition. A process for producing the resin masterbatch composition includes co-extruding in tubular form a core material encapsulated by an outer layer, wherein the core material comprises at least one additive, and the outer layer comprises a polymer, to form a filled tube; passing the filled tube into a sealing device that cuts the filled tube into multiple discrete segments seals and simultaneously seals each end of each discrete segment, thereby forming closed end pellets; and cooling the closed end pellets.
摘要:
A masterbatch polyester composition comprises poly(alkylene furandicarboxylate) and a nucleating agent, wherein the amount of nucleating agent is in the range of 3 to 30 %wt, based on the composition. The nucleating agent may be selected from the group consisting of inorganic compounds, organic salts, organic acids, waxes, polymers and combinations thereof. After blending the masterbatch composition with a batch of poly(alkylene furandicarboxylate) a semi-crystalline polyester composition may be obtained.
摘要:
The present invention relates to a masterbatch composition comprising high concentration of biological entities having a polymer-degrading activity and uses thereof for manufacturing biodegradable plastic articles.
摘要:
The invention is directed to a mass transit vehicle component, to a method for preparing a mass transit vehicle component with improved smoke density and/or heat release performance, to the use of a component in mass transit vehicles, and to a use of a pellet or composition. The mass transit vehicle component of the invention is prepared from i) pellets of a flame retardant glass fibre reinforced polypropylene composition; ii) a composition comprising: a) pellets of a fibre reinforced polypropylene composition; and b) a flame retardant polypropylene dilution composition; or iii) a composition comprising: a) pellets of a flame retardant fibre reinforced polypropylene composition, and b) a flame retardant polypropylene dilution composition.
摘要:
A composition and a method are provided for graphene reinforced polyethylene terephthalate (PET). Graphene nanoplatelets (GNPs) comprising multi-layer graphene are used to reinforce PET, thereby improving the properties of PET for various new applications. Master-batches comprising polyethylene terephthalate with dispersed graphene nanoplatelets are obtained by way of compounding. The master-batches are used to form PET-GNP nanocomposites at weight fractions ranging between 0.5% and 15%. In some embodiments, PET and GNPs are melt compounded by way of twin-screw extrusion. In some embodiments, ultrasound is coupled with a twin-screw extruder so as to assist with melt compounding. In some embodiments, the PET-GNP nanocomposites are prepared by way of high-speed injection molding. The PET-GNP nanocomposites are compared by way of their mechanical, thermal, and rheological properties so as to contrast different compounding processes.
摘要:
The present invention relates to a masterbatch for use in a process of preparing a composite material comprising a blend of a first semi-crystalline polymer with at least 5 wt% carbon nanotubes. Good dispersion of the carbon nanotube is obtained within the masterbatch and evidenced by the blending of the masterbatch with a second semi-crystalline polymer miscible with the first one in respective proportions to obtain a composite material containing about 1 wt% of carbon nanotubes wherein said composite material yields an agglomerate area fraction U% lower than 2 and a surface resistivity lower than 10 5 ohm/sq.
摘要:
An elastomeric composition is provided comprising at least one elastomeric compound, at least one vinyl acetal polymer, at least one filler, and optionally at least one coupling agent. A process of making the elastomeric composition is also provided as well as articles comprising the elastomeric composition. In particular, tires comprising the elastomeric composition are provided wherein the handling and processing characteristics are improved while other performance characteristics are retained.