Sabic Global Technolgoies B.v.

Shanghai Nuclear Engineering Research & Design Institute

Chuntao Tang

Wei Feng

Hui Li

Yuan Zhou

Bo Yang

Adel Fawzy Bastawros

Libing Zhu

Jiwei Li

Qianxue Ding

Junqiang Lu

Jiazheng Liu

A multilayer polymeric film includes a top layer comprising poly(methyl methacrylate); a bottom layer comprising a bottom layer composition comprising poly(methyl methacrylate), polycarbonate, copolymers thereof, or a combination comprising at least one of the foregoing, wherein a glass transition temperature of the bottom layer composition is less than or equal to 140&#xb0; C.; and an inner layer disposed between an inside surface of the top layer and an inside surface of the bottom layer, wherein the inner layer comprises polycarbonate.

Multilayer polymeric films and the methods of making thereof

A gray control rod having a neutron absorber comprising terbium and dysprosium is provided. The neutron absorber comprises at least one first component and at least one second component, the reactivity worth of the first component increases as the service time of the neutron absorber increases, the reactivity worth of the second component decreases as the service time of the neutron absorber increases; the reactivity worth of the neutron absorber varying no more than 15% within the service time of the neutron absorber. By using the first component and the second component to form the neutron absorber, and adjusting the proportion of the respective components in the neutron absorber, the neutron absorber having a substantially planar reactivity worth loss characteristic can be obtained. The gray control rod and the assembly having required reactivity controlling ability can be obtained by increasing or decreasing the material dosage of the neutron absorber.

Gray control rod having a neutron absorber comprising terbium and dysprosium

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Shanghai, China

Chuntao Tang