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      目錄
      保溫材料與建筑節能
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      骨料級配和壓縮比對聚乙烯醇基膨脹珍珠巖保溫板性能的影響研究

      作者:張紅林,楊智榮,譚涌,王鴿,南瑤,劉平軍

      關鍵字:骨料,級配,和,壓縮,比對,聚乙烯醇,基,膨脹,

       
      (咸陽非金屬礦研究設計院有限公司,陜西 咸陽  712021)
          摘要:研究了膨脹珍珠巖級配和保溫板壓縮比對聚乙烯醇(PVA)基膨脹珍珠巖保溫板物理力學性能的影響。結果表明:膨脹珍珠巖級配后的堆積密度越大制備的保溫板干密度越大;保溫板的干密度、抗壓強度和導熱系數隨著壓縮比的增加而增大,當壓縮比增大到1.6~2.2時,保溫板的導熱系數與干密度呈線性相關;以改性PVA為膠黏劑,合理確定骨料級配,壓縮比為2.0時,制備得到干密度159.5~168.6 kg/m3、抗壓強度0.313~0.332 MPa、導熱系數0.0527~0.0545 W/(m·K)的PVA基膨脹珍珠巖保溫板。
          關鍵詞:膨脹珍珠巖保溫板;骨料級配;壓縮比;聚乙烯醇
          中圖分類號:TU55+1.34        文獻標識碼:A        文章編號:1001-702X(2020)08-0123-05
       
      Effect of aggregate gradation and compression ratio on the properties of PVA-based expanded perlite insulation board
      ZHANG Honglin,YANG Zhirong,TAN Yong,WANG Ge,NAN Yao,LIU Pingjun
      (Xianyang Institute of Nonmetallic Minerals Research & Design Co. Ltd.,Xianyang 712021,China)
          Abstract:The effects of gradation of expanded perlites and compression ratio on the physical and mechanical properties of PVA-based expanded perlite insulation board(PEPB) were studied. The results show that the higher the packing density of
      expanded perlites after graded,the higher the dry density of PEPB prepared by these expanded perlites. Dry density,compressive strength and thermal conductivity of PEPB increase with compression ratio increasing. When the compression ratio increases to 1.6~2.2,the thermal conductivity of PEPB shows a linear correlation with its dry density. PEPBs were prepared,which have dry densities of 159.5~168.6 kg/m3,strengths of 0.313~0.332 MPa and thermal conductivities of 0.0527~0.0545 W/(m·K),by using modified PVA as adhesive and reasonable aggregate gradation of expanded perlite.
          Key words:expanded perlite insulation board,aggregate gradation,compression ratio,PVA
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