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    [note] => MAY-TP01型开闭孔率分析仪采用全不锈钢金属管路，是利用气体膨胀法检测发泡材料、硬质泡沫、岩心、金属等材料的开孔率、闭孔率、切孔校正开孔率、切孔校正闭孔率的全自动分析仪器，仪器主要应用于保温材料、隔音材料，金属材料、石油勘探等行业
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MAY-TP01开闭孔率测试仪（气体置换法）
产品介绍 
MAY-TP01 型开闭孔率分析仪采用全不锈钢金属管路，是利用气体膨胀法检测发泡材料、硬质泡沫、岩心、金属等材料的开孔率、闭孔率、切孔校正开孔率、切孔校正闭孔率的全自动分析仪器，仪器主要应用于保温材料、隔音材料， 金属材料、石油勘探等行业，可测试聚氨酯泡沫、酚醛泡沫、岩心、金属块、土壤块等物质。 
工作原理 
采用阿基米德原理--气体膨胀置换法，利用小分子惰性气体（He 或者 N2）作为介质，通过理想气体状态方程：PV=nRT 计算测试腔内样品所排开的气体体积，从而精确测量样品的真实体积（含闭孔），再根据材料外观体积、发泡前体积可计算出开闭孔率.  
气体膨胀置换法是以气体取代液体测定样品所排开的体积. 此法可避免浸液法中由于样品溶解造成的测试误差，具有不损坏样品的优点。因为气体能渗入样品中极小的孔隙和表面的不规则孔隙，因此测出的样品体积更接近样品的真实体积，从而可以用来计算样品的开闭孔率.  
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