摘要:
A load-bearing composite structure for connection to a support body or structure. The load-bearing structure includes a load-bearing element that is made up of continuous reinforcing fibers and a resin matrix. The load-bearing element has an attachment portion for connection to the support body. The load-bearing composite structure further includes a connection element that is formed using a molding material which is composed of discontinuous fibers and a resin matrix. The molding material is molded over the surface of the attachment portion of the load- bearing element.
摘要:
A structural adhesive composition that is suitable for high-strength bonding of metals and aerospace structural materials. In one embodiment, the structural adhesive composition based on a two-part system, which is curable at or below 200°F (93 °C). The two-part system is composed of a resinous part (A) and a catalyst part (B), which may be stored separately at room temperature until they are ready to be used. The resinous part (A) includes at least two different multifunctional epoxy resins with different functionality selected from difunctional, trifunctional, and tetrafunctional epoxy resins, certain toughening components, and inorganic filler particles as a rheology/thixotrophy modifying component. The toughening components include core-shell rubber particles with different particle sizes and at least one of an elastomeric polymer and a polyethersulfone polymer. The catalyst part (B) includes an aliphatic or cyclic amine compound as a curing agent and inorganic filler as a rheology/thixotropy modifying component. The weight ratio of part (A) to part (B) is within the range of 3:2 to 10:2. In another embodiment, the structural adhesive composition is based on a one-part system which includes the components of the resinous part (A) in the two-part system mixed with a latent amine curing agent. The one-part system may further include an imidazole and/or an aliphatic amine. The one-part system is curable within the temperature range of 140-300°F (60-150°C). The paste adhesive disclosed herein has film-like properties and is particularly useful in rapid-assembly aerospace structure bonding applications.
摘要:
The invention relates to a filamentized fiber reinforced putty compound, to parts made from said putty, and to devices and methods for manufacturing both the putty and the parts. The compound of the invention is formed by a chopped fibers composition including monofilaments that have been broken down from chopped strands and a UV and/or chemical curable resin composition and is a ready-to-mold plastic putty used in molding, mainly by continuous lamination/pultrusion/extrusion and injection. The putty fiber reinforcement, whose weight makes up between 10 and 50% of the total weight of the putty, more particularly in the range of 20 to 40%, is formed by one of the group consisting of at least one type of chopped strands that has been entirely broken down into filaments, and at least one type of chopped strands that has been entirely broken down into filaments in combination with at least one type of chopped strands that has been left intact; each one of the types of fibers involved in the same composition is chopped in one or more lengths of between 3 and 50 mm, with the bulk preferably being between 12 and 30 mm; the percentage of the fiber filaments in the putty being the amount necessary and sufficient to capillarity reinforce the resin thoroughly and everywhere in the putty.
摘要:
A method includes performing a contrast enhanced computed tomography(CT) scan of tissue of interest of a subject, with an imaging system (100) having a radiation source (112) and a detector array (118), in which a peak contrast enhancement of the tissue of interest, a full range of motion of the tissue of interest, and an entire volume of interest of the tissue of interest are concurrently imaged during a single rotation of the radiation source and the detector array of the imaging system over an entire or a predetermined sub- portion of a breathing cycle.
摘要:
A hollow lineal profile formed from a continuous fiber reinforced ribbon ("CFRT") that contains a plurality of continuous fibers embedded within a first thermoplastic polymer matrix. To enhance the tensile strength of the profile, the continuous fibers are aligned within the ribbon in a substantially longitudinal direction (e.g., the direction of pultrusion). In addition to continuous fibers, the hollow profile of the present invention also contains a plurality of long fibers that may be optionally embedded within a second thermoplastic matrix to form a long fiber reinforced thermoplastic ("LFRT"). The long fibers may be incorporated into the continuous fiber ribbon or formed as a separate layer of the profile. Regardless, at least a portion of the long fibers are oriented at an angle (e.g., 90°) to the longitudinal direction to provide increased transverse strength to the profile.
摘要:
The invention relates to a device for continuous lamination, a corresponding method and a FRP continuous laminate, comprising: a fiber reinforced plastic (FRP) structural core (15) comprising a composite filamentary premix of glassfiber (5) and unsaturated polyester resin composition (2) said core having a lower face and an upper face, a central area and two longitudinal edges, wherein said glassfiber (5) is formed of monofilaments, having a diameter of between 0.1 and 35 microns, that have been isolated and/or separated from standard glassfiber chopped strands and homogeneously and isotropically dispersed within said resin composition (2), said resin composition (2) contains curing agents that are been selected from a group including chemical curing agents and UV curing agents, and said longitudinal edges are straight, smooth, molded, uncut edges.
摘要:
Constructional panel having a front side suitable to be exposed to outside weather conditions, comprising a front side element, a rear side element and an insulating material arranged between said front and rear side elements, where the front side element is made from a high strength concrete, and where the insulating material is adhered to the rear side of said front and rear side elements.