铅硼聚乙烯Lead boron polyethylene

铅硼聚乙烯是一种用于核防护的新产品。其中H、B和Pb原子的质量分数对合成的中子起着重要作用；由于其屏蔽特性，B4C、H含量高，对中子的缓化率和热中子均有很好的遮蔽效应，而对辐射的遮蔽作用却很小，所以在对中子和伽马辐射的混射时，一般选用铅硼聚乙烯作为基体，它在中子和伽马辐射的同时，对辐射也有很好的防护。并且，随其成分和厚度的增大，其吸声效应也逐渐趋于平稳

Lead boron polyethylene is a new product for nuclear protection. The mass fractions of H, B and Pb atoms play an important role in the synthesis of neutrons; Due to its shielding characteristics, high content of B4C and H, it has a good shielding effect on the slowing rate of neutrons and thermal neutrons, while the shielding effect on radiation is very small. Therefore, in the case of mixed radiation of neutrons and gamma radiation, lead boron polyethylene is generally selected as the matrix. It has a good protection against radiation at the same time as neutron and gamma radiation. Moreover, with the increase of its composition and thickness, its sound absorption effect gradually tends to be stable

铅硼聚乙烯手感似蜡，具有优良的耐低温性能(低使用温度可达-70～-100℃)，化学稳定性好，能耐大多数酸碱的侵蚀(不耐具有氧化性质的酸)，常温下不溶于一般溶剂，吸水性小，电绝缘性能优良；密度低；韧性好（同样适用于低温条件）；拉伸性好；电气和介电绝缘性好；吸水率低；水汽shen透率低；化学稳定性好；抗张性。