PRODUCT COMPRISING FIBER-REINFORCED RESIN RECYCLED FOR REPROCESSING, AND DEVICE FOR PREPARING SUCH PRODUCT Russian patent published in 1999 - IPC

FIELD: chemical industry. SUBSTANCE: present invention describes products comprising fiber-reinforced resin recycled for reprocessing, and device for preparing such products. Product comprising fiber-reinforced resin recycled for reprocessing is made of composition which is essentially dry mixture of material pieces from fiber- reinforced resin recycled for reprocessing, each piece consisting of thermoreacting resin and reinforcing fiber bonded together. Said product has arbitrary shape and sizes, and fillers which are essentially mixture of coarse-grain and fine-grain fillers stirred in dry state with pieces of fiber-reinforced resin recycled for reprocessing at room temperature, and non-thermoplastic binder flowing at room temperature, said binder bonded together with dry mixture from pieces of fiber-reinforced resin and fillers. Product comprises binder which in viscous-flow state at room temperature in initial stage and is hardenable with said mixture without heat supply. Dry mixture comprises components (% by volume): 20-40 fiber-reinforced resin pieces; 10-30 coarse-grain filler; and 20-40 fine-grain filler. Product has fiber- reinforced resin formed as crushed portions of larger products made of fiber-reinforced resin. Length and width of said portions are 5-20 cm, and thickness is approximately equal to thickness of said product made of fiber-reinforced resin. The present invention also describes device for preparing said product. Device is equipped with means for milling with glass fiber to granules of 0.3-1.3 cm. In device, milling means are made so as to allow material to be ground to pieces of 5- 20 cm in width. The presence invention makes it possible to reuse fiber-reinforced resin pieces with relatively large and relatively small amount of resin. EFFECT: improved properties of the resin and better quality of the device. 7 cl, 5 ex, 5 dwg, 1 tbl