摘要:
Certain embodiments described herein are directed to composite materials comprising one or more high melt flow index resins. In some examples, the composites can be used to provide automotive parts such as, for example, vehicle interior parts and vehicle exterior parts. In some configurations, the composite comprises a fiber reinforced polymer core comprising reinforcing fibers and a resin comprising a high melt flow index of greater than 325 g/10 min. as measured by ASTM D1238, condition L.
摘要:
Composite materials effective for use in deep draw processes, which can be used to provide vehicle panels such as, for example, vehicle underbody panels. The composite comprises a fiber reinforced polymer core and a skin material disposed on at least some portion of the fiber reinforced polymer core, in which the skin material comprises a basis weight of at least 65 g/m2 and an elongation at break of at least 20%.
摘要翻译:有效用于深冲工艺的复合材料,其可用于提供车辆面板,例如车辆底板。 所述复合材料包含纤维增强聚合物芯和设置在所述纤维增强聚合物芯的至少一些部分上的表皮材料,其中表皮材料包含至少65g / m 2的基重和至少20的断裂伸长率 %。
摘要:
A multi-layered fiber reinforced sheet (10) for automotive vehicle interior structural components includes, in an exemplary embodiment, a permeable fiber reinforced thermoplastic core layer (12) having a first surface (14) and a second surface (16). The core layer includes a plurality of reinforcing fibers bonded together with a thermoplastic resin, and has a density of about 0.1 gm/cc to about 1.8 gm/cc. The multi-layered fiber reinforced sheet also includes at least one first reinforcing skin (18) applied to the first surface of the core layer, and at least one second reinforcing skin (20) applied to the second surface of the core layer. Each first and second reinforcing skin includes a matrix of reinforcing fibers and a thermoplastic resin wherein the matrix of reinforcing fibers applied to the first surface are arranged in a bi-directional orientation and the matrix of reinforcing fibers applied to the second surface are arranged in a bi-directional orientation.
摘要:
A composite sheet material in one embodiment includes a porous core layer. The porous core layer includes a thermoplastic polymer, about 20 weight percent to about 80 weight percent of reinforcing fibers based on a total weight of the porous core layer, and an effective amount of a flame retardant agent.
摘要:
A method of fabricating a porous, fiber-reinforced thermoplastic sheet having increased lofting properties is provided. The method includes adding reinforcing fibers having an average length of about 5 mm to about 50 mm, and thermoplastic resin powder particles to an agitated aqueous foam to form a dispersed mixture, laying the dispersed mixture of reinforcing fibers and thermoplastic resin particles down onto a support structure, evacuating the water to form a web, generating a z-axis orientation of a portion of the reinforcing fibers, heating the web above the glass transition temperature of the thermoplastic resin, and pressing the web to a predetermined thickness to form a porous thermoplastic composite sheet having a void content of about 1 percent to about 95 percent.
摘要:
A multi-layered fiber reinforced thermoplastic sound absorbing panel includes a porous fiber reinforced thermoplastic core layer having a first surface and a second surface, and includes a thermoplastic material and from about 20 weight percent to about 80 weight percent fibers, a tie layer covering the second surface of the core layer and including a thermoplastic material, and a barrier layer covering the tie layer. The barrier layer includes a thermoplastic material having a melting temperature higher than the melting temperature of the core layer thermoplastic material. The tie layer bonds the barrier layer to the core layer. The panel also includes a non-woven layer including a fabric bonded to the barrier layer. The non-woven layer forms an outer surface of the panel.
摘要:
A composition of a fiber reinforced laminate material that when thermoformed or compression molded forms a composite having a Class-A surface that is resin rich. The laminate material has a layer of a thermoplastic resin with an initiator and catalyst; a glass mat; an intra-layer of a polymerizable component that is a lower viscosity mixture of oligomers, monomers and thermoplastic resin; a second glass mat, and another layer of a thermoplastic resin with an initiator and catalyst. When thermoformed or compression molded, the combination of heat and pressure force the low viscosity polymnerizable component through the permeable glass mats and toward the surface. The initiator and catalyst cause the polymerizable component to polymerize, forming a Class-A surface that is resin rich. The thermoplastic resin thoroughly permeates the reinforcing fiber forming a composite having a core with a nearly uniform mixture of reinforced glass fiber and thermoplastic resin.
摘要:
A filled glass mat thermoplastic (GMT) composite material having a polyolefin, glass fibers and a filler. The filled GMT composite material exhibits mechanical properties that are similar to or significantly improved over non-filled GMT composite materials. The preferred polyolefins include polypropylene, polyethylene, polymethylpentene, and copolymer blends thereof. The glass fibers are greater than 1/4 inch (6.4 mm) in length and are preferably at least 1/2 inch (12.7 mm) in length. The glass fibers may be a continuous glass mat, such as unidirectional or random mats and woven or non-woven mats, or chopped fibers. The filler is selected from mineral, synthetic or plant sources and is preferably selected from mica, talc, calcium carbonate and barium sulphate. The filled GMT composite material is less expensive to produce than similar non-filled GMT composite materials, does not sacrifice impact strength and tensile strength properties and can be used for automotive bumper beams.