Compression molded flame retardant and high impact strength ultr

Details Compression molded flame retardant and high impact strength ultr Compression molded flame retardant and high impact strength ultr

1991-09-12

1994-02-15

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

428290, 428921, 428325, 428516, 524416, B32B 2732, C08K 332

Patent

active

052865762

ABSTRACT:
Impact resistant and flame retardant polymer composition, slab-like rectangular solid made of said composition, and composite laminate article having at least one layer of said composition. The polymer composition comprises a maximum of 86 volume percent of ultra high molecular weight polyethylene (UHMWPE), a minimum of 4.40 volume percent of a flame retardant additive or mixture thereof, and a minimum of 6 volume percent of chopped reinforcing fibers, all volumes referring to the densified (molded) state. In addition the bulk volume of the chopped reinforcing fibers, as measured by a tapped density test, must be a minimum of 27 percent of the final molded volume of the composition. The maximum volume % loading of the additives is limited by the requirement that the notched Izod impact strength is a minimum of 7 ft.-lb per inch width. The preferred flame retardant additive is essentially a water insoluble form of ammonium polyphosphate having a water solubility not exceeding 1 gram per 100 grams of water, and the preferred reinforcing fibers are chopped glass fibers about 1/8 to 1/4" inch in length.

REFERENCES:
patent: 4145330 (1979-03-01), Zorzi et al.
patent: 4165309 (1979-08-01), Fielding et al.
patent: 4185008 (1980-01-01), Caspari et al.
patent: 4246374 (1981-01-01), Kopchik
patent: 4298509 (1981-11-01), Fochesato
patent: 4333869 (1982-06-01), Marciandi et al.
patent: 4509559 (1985-04-01), Cheetham et al.
patent: 4518552 (1985-05-01), Matsuo et al.
patent: 4579894 (1986-04-01), Bertelli et al.
patent: 4597818 (1986-07-01), Aoyama et al.
patent: 4670508 (1987-06-01), Ohdaira et al.
patent: 4727102 (1988-02-01), Scarso
patent: 4731199 (1988-03-01), Matsuo et al.
patent: 4758627 (1988-07-01), Wilkus et al.
patent: 4781979 (1988-11-01), Wilkus et al.
patent: 4816517 (1989-03-01), Wilkus et al.
patent: 4853427 (1989-08-01), Herten et al.
patent: 4864001 (1989-09-01), Wilkus et al.
patent: 4913962 (1990-04-01), Wilkus et al.
patent: 4933393 (1990-06-01), Toyota et al.
patent: 4935262 (1990-06-01), Wilkus et al.
patent: 4945132 (1990-07-01), Wilkus et al.
patent: 4973626 (1990-11-01), Wilkus et al.
Braun et al, "Ultra high molecular polyethylene-the material and its modifications", German Plastics, vol. 69, Aug. 8, 1979, pp. 4.5. English translation of JP 62-220555, pp. 1-9, Yokosuka et al.

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