Flow formable composites having polymodal fiber distributions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524496, 428325, 428327, 428332, 428338, 428212, 264109, 264128, 162145, 162149, 162156, 1621681, C08K 340

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active

055854320

ABSTRACT:
Reinforced polymer composites having a uniform mixture of reinforcing fibers having a polymodal length distribution and having polymer particulates are provided exhibiting a good balance of impact strength and processability/formability. The composites are prepared by forming a dilute aqueous slurry of a solid heat-fusible organic polymer and a reinforcing material having a polymodal length distribution, agitating the slurry and then dewatering the slurry to provide a mat of thermoplastic polymer particles and reinforcing fiber. The mat is dried and then stamped under pressure and heat to consolidate the thermoplastic material and form a sheet-like composite structure.

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patent: 4323531 (1982-04-01), Bradley et al.
patent: 4426470 (1984-01-01), Wessling et al.
patent: 5275776 (1994-02-01), Hara et al.

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