Mixing process for generating in-situ reinforced thermoplastics

Details Mixing process for generating in-situ reinforced thermoplastics Mixing process for generating in-situ reinforced thermoplastics

1991-05-01

1993-07-06

Short, Patricia A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525425, 525437, 525444, 525450, C08L 6702, C08L 6703, C08L 6704, C08L 2312

Patent

active

052254887

ABSTRACT:
A method for blending polymeric materials includes the steps of producing a melt stream of a first polymer from a first extruder (12) and a separate melt stream of a second polymer from a second extruder (14), joining the melt streams at a T-junction (16), distributing the first polymer within said second polymer using a static mixer (10), and extruding the blend through a die (18). In particular, using this method liquid crystal polymer fiber reinforcement can be formed in-situ within a matrix material.

REFERENCES:
patent: 3937772 (1976-02-01), Urban et al.
patent: 4012348 (1977-03-01), Chelland et al.
patent: 4433083 (1984-02-01), Cogswell et al.
patent: 4547541 (1985-10-01), Golba
patent: 4728698 (1988-03-01), Isayev
patent: 4919875 (1990-04-01), Wang
"The Morphology and Rheology of Polymer Blends Containing a Liquid Crystal Copolyester"; Blizard & Baird; Polym. Eng. Sci.; vol. 27, No. 9; 1987.
"Novel Reinforced Polymers Based on Blends of Polystyrene and a Thermotropic Liquid Crystalline Polymer"; Weiss et al.; Polym. Eng. Sci.; vol. 27; No. 9, pp. 684-691; 1987.
"Polymer Blends Containing Liquid Crystals: A Review"; Dutta et al.; Polym. Eng. Sci.; vol. 30; No. 17, pp. 1005-1018; 1990.
"Blending Breakthrough Combines Strength of Liquid Crystal Polymer With Economy of Polypropylene"; James R. Best, Editor; Thermoplastics Marketing Newsletter; vol. XIV; No. 29; Jul. 16, 1990.
"Generation of Thermoplastic Composites from Blends of Liquid Crystalline Polymers with Polypropylene"; Done et al.; ANTEC '90; pp. 1857-1860.

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