公开(公告)号：US4134937A

公开(公告)日：1979-01-16

申请号：US816571

申请日：1977-07-18

申请人： Robert A. Cass ,  John M. Butler ,  Edward F. Janzow

发明人： Robert A. Cass ,  John M. Butler ,  Edward F. Janzow

IPC分类号： C08G63/676 ,  C08K3/38 ,  C08L67/06

CPC分类号： C08K3/38 ,  C08G63/676 ,  C08L67/06

摘要： A polyester resin composition having improved neutron shielding properties can be made by mixing a condensation product of maleic anhydride, phthalic anhydride and polyethylene glycol dissolved in styrene, with at least a sufficient amount of pelleted polyethylene to substantially increase the neutron shielding properties of said condensation product, and a sufficient amount of curing agent such as benzoyl peroxide and N,N-dimethylaniline to promote the curing of the mixture to a solid product. The polyethylene having a relatively high hydrogen content reduces the energy of the neutrons. A powdered boron compound such as boric acid and/or a lithium compound can be incorporated in the composition in amounts at least sufficient to effect substantial thermal neutron capture. Cadmium can be incorporated into the composition being much more efficient at neutron capture than boron or lithium, but then provision must be made for stopping the capture gamma rays generated.

摘要翻译： 具有改善的中子屏蔽性能的聚酯树脂组合物可以通过将马来酸酐，邻苯二甲酸酐和溶解在苯乙烯中的聚乙二醇的缩合产物与至少足够量的颗粒聚乙烯混合来大大提高所述缩合产物的中子屏蔽性能 ，以及足够量的固化剂如过氧化苯甲酰和N，N-二甲基苯胺，以促进混合物固化成固体产物。 具有相对较高氢含量的聚乙烯降低了中子的能量。 粉末状硼化合物如硼酸和/或锂化合物可以以至少足以实现实质的热中子捕获的量掺入组合物中。 镉可以掺入到组合物中比在硼或锂中的中子捕获效率更高，但是必须提供用于停止产生的捕获γ射线。