摘要:
A vehicle cargo construct including a floor, a plurality of side wall panels extending from the floor, and an end wall panel extending from the floor between the plurality of side wall panels. The floor has an exterior surface and an oppositely opposed interior surface. Each of the plurality of side wall panels has an exterior surface and an oppositely opposed interior surface. The has an exterior surface and an oppositely opposed interior surface. Each of the floor, the plurality of side wall panels, and the end wall panel are formed of a composite sandwich panel material formed including an open area core defining a plurality of pores disposed between a backing sheet and a surface sheet formed of a sheet molding composition (SMC) reinforced with unidirectional fibers.
摘要:
A vehicle component includes a body, a first beam, and a second beam. The body has a first fixture region and a second fixture region. The first beam is formed of a first composite material and has a first beam shape. The first beam is attached to the body and extends between the first fixture region and the second fixture region of the body. The second beam is formed of a second composite material and has a second beam shape that is simple compared to the first beam shape. The second beam is attached to the body and extends between the first fixture region and the second fixture region of the body.
摘要:
A composite sandwich panel assembly including an open area core, a high gloss surface sheet, and a structural skin. The open are core defines a plurality of pores and has a first face and an opposing second face. The high gloss surface sheet is adhered to the first face of the open area core by a first adhesive layer. The high gloss surface sheet has a high gloss surface. The structural skin is adhered to the second face of the open area core by a second adhesive layer. A process for forming the composite sandwich panel assembly includes positioning the high gloss surface sheet, joining the first face of the open area core to the high gloss surface sheet with a first adhesive layer intermediate therebetween, and joining the structural skin to the second face of the open area core with a second adhesive layer intermediate therebetween.
摘要:
A polyurea additive is provided that strengthens a given base sheet molding composition (SMC) An isocyanate containing species and an amine containing species are introduced into an uncured polymeric resin of a sheet molding compound (SMC) under conditions suitable for the formation of a polyurea polymer network. Upon cure of the SMC base resin, an interpenetrating network is formed that is stronger than the base SMC absent the polyurea. As a result, an article is formed from the SMC that is stronger at the same dimensions than a conventional article or thinned to achieve the same properties to obtain a lightweight article compared to that formed from conventional SMC. The properties of the article are also attractive relative to aluminum for the formation of vehicle body and exterior panels.
摘要:
A method for imparting textures of grained or woven patterns to the surfaces of thermoset articles during the formation of the article includes a platen with a texture being introduced into a mold. A thermoset material is charged into the mold. Pressure and heat are applied to bring the thermoset material into contact with the platen to impart the texture to a surface of the thermoset material. The thermoset material is allowed to cure in the mold. The thermoset article is removed from the mold with the texture. The textured article is structurally improved relative to a like article formed with a smooth or other platen texture. A system for producing the article by way of the method is also provided.
摘要:
A molded article is provided that has a resin matrix having a surface, the resin matrix formed from cross-linked polyester resin or vinyl-ester resin. Glass fibers are crossed linked to the resin matrix via a silane coupling agent reactive with the matrix. A molded article is provided that has a resin matrix having a surface, the resin matrix formed from cross-linked polyester resin or vinyl-ester resin. Glass fibers each covalently bonded to at least one microspheroid matrix via a silane coupling agent reactive with a surface of the at least one microspheroids are present in increase the fiber pull strength. A sizing composition for treating glass fibers is also provided for use in such articles.
摘要:
A process for resin transfer molding (RTM) with staggered injection of a resin is provided that injects resin into a plurality of injection ports of a mold. The temperature and pressure applied to the mold are controlled during injection to limit promote rapid filling of the mold cavity. The injection ports are activated for injecting the resin in any order of individually, in groups, or pairings. Fibers are readily added to the mold separately or within the resin. Cycle times of from 1 to 5 minutes are provided for the process.
摘要:
Pressurized air is conveyed through a manifold into contact with the first member via apertures having hole diameters of from 0.8 to 2.5 mm that are spaced apart at a distance of from 10 to 30 mm along the manifold to achieve a turbulent air flow pattern with a Reynolds number of greater than 2200 at a temperature of between 150 and 315°C and at an air pressure between 0.5 and 10 pounds per square inch (psi) over ambient pressure onto the outer surfaces of the first member and the second member for heat curing a curable adhesive between the members to achieve adhesive cure in 60 to 90 seconds and free of any bond-line read-out visible to an unaided normal human eye.
摘要:
A vehicle component is provided that includes a first cured layer of a molding composition having a predominant fiber filler chopped glass fibers, a second cured layer of molding composition having a predominant fiber filler chopped carbon fibers, and a bonding agent with elongation properties configured to accommodate the differential coefficients of linear thermal expansion between the first cured layer and the second cured layer. The second cured layer is substantially devoid of glass fiber. The bonding agent is an elastomeric adhesive, which is operative from -40 to 205°C. The first cured layer forms an outer skin layer surface of a vehicle and the second cured layer forms an interior layer, where the outer skin layer surface has a class-A finish.
摘要:
A process for debundling a carbon fiber tow into dispersed chopped carbon fibers suitable for usage in molding composition formulations is provided. A carbon fiber tow is fed into a die having fluid flow openings, through which a fluid impinges upon the side of the tow to expand the tow cross sectional area. The expanded cross sectional area tow extends from the die into the path of a conventional fiber chopping apparatus to form chopped carbon fibers, or through contacting tines of a mechanical debundler. Through adjustment of the relative position of fluid flow openings relative to a die bore through which fiber tow passes, the nature of the fluid impinging on the tow, the shape of the bore, in combinations thereof, an improved chopped carbon fiber dispersion is achieved. The chopped carbon fiber obtained is then available to be dispersed in molding composition formulations prior to formulation cure.