1. Definition of Boron containing Ultra High Molecular weight Polyethylene (UHMWPE):

Boron-containing ultra-high molecular weight polyethylene (UHMWPE) is a new type of composite neutron absorption material, which is composed of boron carbide powder and lead powder uniformly stirred through high speed stirring, kneading, plasticizing and hot pressing.

It is a new type of hard neutron absorbing material developed by China Institute of Engineering Physics. It has been used for neutron and γ -ray protection in scientific research and nuclear engineering construction. The physical and chemical properties, radiation resistance and neutron absorption effect of the product have been fully studied and have independent intellectual property rights.

2. Advantages of boron-containing polyethylene panels:

Polyethylene is a hydrocarbon with high hydrogen content and good ability to attenuate fast neutrons. Boron absorbs thermal neutrons, and lead absorbs neutrons from γ radiation. Therefore, lead-boron polyethylene plates have fast neutron absorption. The comprehensive neutron absorption effect of thermal neutron and γ radiation. The popularization and application of boron-containing polyethylene plate is helpful to simplify the neutron absorption structure, to reduce the weight of neutron absorption screen and to reduce the absorbed neutron volume.

The boron polyethylene plate has good engineering properties, good dimensional stability and satisfactory γ radiation resistance. The performance of absorbing thermal neutron, fast neutron and γ radiation is obviously superior to that of polyethylene when the temperature is 80 ~ 100 ℃. The results show that the boron-containing radiation-proof polyethylene plate can prevent the harm caused by nuclear radiation and neutron radiation to individuals and society.

3. Application domain and market analysis

Used as spent fuel for nuclear power plant and nuclear test tank, neutron beam collimator, neutron trap.

 1.含硼超高分子量聚乙烯板的定义：

含硼超高分子量聚乙烯板是将碳化硼粉和铅粉均匀地搅拌在高分子聚乙烯材料当中通过高速搅拌、捏合、塑化、热压而成的，是一种新型的复合吸收中子的材料。

它是中国工程物理研究院开发的一类新型硬质吸收中子的材料，已用于科研、核工程建设的中子及γ射线防护。该产品的理化性能和抗辐照性能及吸收中子效应作了充分的实验研究，具有自主的知识产权。

 2.含硼聚乙烯板的优点：

聚乙烯是碳氢化合物，含氢量高，对快中子有良好的减弱能力，硼吸收热中子、铅对γ辐射的吸收中子特别效果，因此，铅硼聚乙烯板具有吸收快中子，热中子和γ辐射的综合吸收中子的效果，含硼聚乙烯板的推广应用有助于吸收中子结构的简化，能够减轻屏吸收中子的重量，缩小吸收中子体积。

 含硼聚乙烯板具有良好的工程性能、尺寸稳定性好，具有较满意的耐γ辐射性能，使用温度为80~100℃，吸收热中子、快中子和γ辐射性能明显优于聚乙烯，研究表明含硼防辐射聚乙烯板能够防止核辐射及中子辐射给个人及社会造成的危害。

3.应用领域及市场分析：

用作核电站乏燃料及核实验用产品罐、中子束准直器、中子捕集器。