EP 0072550 A1 19830223 - A neutron-shielding composite fiber and a method of manufacturing same.
Title (en)
A neutron-shielding composite fiber and a method of manufacturing same.
Title (de)
Eine gegen Neutronenstrahlung abschirmende Mischfaser und Verfahren zu deren Herstellung.
Title (fr)
Fibre mixte de protection contre les radiations et procédé pour sa fabrication.
Publication
Application
Priority
JP 12669481 A 19810814
Abstract (en)
The invention relates to new fibrous neutron-shielding material in the form of composite or bicomponent fibers having a core-and-sheath structure, comprising a fiber-forming polymer (A) as the core component, which contains at least 5% by weight of neutron-absorbing particles of up to 25 mu m, preferably 15 mu m and less in diameter, and at least one kind of fibre-forming polymer (B) as the sheath component, said polymer (B) being compatible with said polymer (A). The polymers (A) and (B) are preferably polyethylene or copolymers containing a major amount of polyethylene. The neutron-absorbing particles contain <6>Li and/or <1><0>B. The new fibers are conventionally melt spun bicomponentially, the ratio of the melt viscosities under the spinning conditions being from 0.2 to 0.9 of the sheath polymer to the core polymer. The fibers obtained are highly flexible and do not show any significant generation of secondary radioactive radiation so that they are highly advantageous with respect to being manufactured into protective clothing.
IPC 1-7
IPC 8 full level
D01F 1/10 (2006.01); D01F 8/04 (2006.01); D01F 8/06 (2006.01); G21F 1/10 (2006.01)
CPC (source: EP)
D01F 1/106 (2013.01); D01F 8/06 (2013.01); G21F 1/10 (2013.01)
Citation (search report)
- [A] FR 2212446 A1 19740726 - KANEBO LTD [JP]
- [A] GB 925505 A 19630508 - GOODYEAR TIRE & RUBBER
- [A] US 3803453 A 19740409 - HULL D
- [A] EP 0002227 A1 19790613 - CARBORUNDUM CO [US]
- [A] FR 1034943 A 19530807
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
EP 0072550 A1 19830223; EP 0072550 B1 19860305; CA 1186465 A 19850507; DE 3269630 D1 19860410; JP S5831117 A 19830223; JP S6130045 B2 19860710
DOCDB simple family (application)
EP 82107384 A 19820813; CA 409361 A 19820813; DE 3269630 T 19820813; JP 12669481 A 19810814