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定義
熱縮試驗儀是用于測定熱收縮材料在液體介質(zhì)中受熱時尺寸變化率的專用檢測設備，通過精確控制溫度環(huán)境和浸漬時間，量化評估材料的熱收縮性能，為包裝材料的熱穩(wěn)定性提供科學依據(jù)。
測試原理
FST-01熱縮試驗儀的工作原理基于加熱槽中載熱油的溫度控制。測試時，首先裁取規(guī)定尺寸的試樣，然后將其浸入設定好溫度的加熱油中。經(jīng)過一定時間后，取出試樣并冷卻至室溫，隨后量取試樣的尺寸，通過計算得出熱收縮率。
技術(shù)參數(shù)
溫度范圍 室溫~200℃
控溫精度 ±0.3℃
試樣尺寸 160×160mm
符合標準
GB/T 13519-2016《聚乙烯熱收縮薄膜》
ASTM D2732-14《塑料薄膜自由收縮測試標準方法》
系統(tǒng)組成
核心模塊
不銹鋼加熱槽
試樣夾持網(wǎng)架
雙層保溫結(jié)構(gòu)
控制系統(tǒng)
微電腦控制器
自動計時報警功能
應用領(lǐng)域
醫(yī)藥包裝
輸液袋收縮膜熱穩(wěn)定性驗證
藥品鋁箔復合膜熱收縮評估
泡罩包裝材料耐溫測試
食品包裝
PE熱縮膜工藝參數(shù)優(yōu)化
飲料集合包裝收縮率檢測
多層共擠膜熱性能研究
測試流程
試樣制備 → 初始尺寸測量 → 油浴浸漬 → 定時加熱 → 冷卻測量 → 數(shù)據(jù)計算
設備特點
精準控溫：三組加熱棒+雙冗余溫度傳感器
安全防護：液位報警+超溫自動斷電
高效測試：單次測試周期≤15分鐘
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