含硼聚乙烯板技术要求

Technical Requirement of BPE
1. Quality Standard质量要求
1) Polyethylene is an effective neutron shielding material. It is loaded with 5%boron by weight to significantly increase thermal neutron capture probability.
The polyethylene shall contain at least 14% hydrogen. In the production of BPE plate, when boron trioxide (B2O3) is added into polyethylene plate, the weight ratio of boron shall be no less than 5%. When use analytical pure grade B2O3 (purity 98%), the content of B2O3is around 16.4% (weight ratio),i.e. for every 100kg polyethylene, 16.9kg B2O3 of 98% purity is to be added and uniformly distributed.The borated polyethylene panels shall be homogenous, without cracks and voids
聚乙烯是一种有效的防辐射材料,通过添加5%重量比的硼，其吸收热中子辐射的能力得到极大地提高。这种聚乙烯应含不少于14%的氢。使用聚乙烯板材加入三氧化二硼制作含硼聚乙烯板材时，硼的含量要求为5% ( 重量比)。当使用分析纯级( 98%纯度)的三氧化二硼原料时，三氧化二硼的含量约为16.4% (重量比)，即: 100kg 聚乙烯中需加入(98%纯度)的三氧化二硼16.9kg.
2) Panel connections in vertical shall be mitered.
板材高度方向拼接板缝要求45角拼接。
3) The width of panel joints shall be less than 2mm.
拼接板缝间隙<2mm。