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當前位置:首頁產(chǎn)品中心防水卷材試驗儀器橡膠低溫脆性試驗機橡膠低溫脆性測定儀 試驗機

橡膠低溫脆性測定儀 試驗機
產(chǎn)品簡介:

橡膠低溫脆性測定儀 試驗機可以測定不同橡膠材料或不同配方的硫化橡膠的脆性溫度和低溫性能的優(yōu)劣。因此無論在科學(xué)研究材料及其制品的質(zhì)量檢驗,生產(chǎn)過程的控制等方面均是*的。

產(chǎn)品型號:

更新時間:2019-11-25

產(chǎn)品地址:滄州市

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一、特點及用途:

橡膠低溫脆性測定儀 試驗機可以測定不同橡膠材料或不同配方的硫化橡膠的脆性溫度和低溫性能的優(yōu)劣。因此無論在科學(xué)研究材料及其制品的質(zhì)量檢驗,生產(chǎn)過程的控制等方面均是*的。橡膠低溫脆性測定儀 試驗機本儀器各項技術(shù)指標符合GB/T 1682-2014硫化橡膠低溫脆性單試樣法等國家標準的要求。本儀器再原有設(shè)計中,增加了冷井攪拌器,使容器四周溫度更均勻,下降溫度更快,節(jié)約時間,降低了能耗。

二、 技術(shù)參數(shù)

1、試驗溫度:--60℃—0℃ (用戶可選)

2、沖擊速度:2m/s±0.2m/s

3、恒溫后,試驗3min時間內(nèi)溫度波動:<±0.5℃

4、沖擊器中心到夾持器下端距離:11±0.5mm

5、外型尺寸:720×700×1380mm

6、功率:1100W

7、冷井容積:3L

 三、結(jié)構(gòu)原理

3.1 升降夾持器

升降夾持器由帶有夾持器的氣缸和氣缸座組成。

從試樣受沖擊部位,到夾持器下端的距離為11.0±0.5mm

3.2沖擊裝置

沖擊裝置由彈簧器和沖頭組成。

3.3沖擊器

沖擊器頭部形狀和尺寸。沖擊器的重量為200±20g,其工作行程為40±1mm。沖擊氣缸在復(fù)位狀態(tài)下,沖擊器端部到試樣的距離為25±1mm。

四、 使用方法

4.1接通電源,溫控儀和計時器顯示燈亮。

4.2向冷井中注入冷凍介質(zhì)(一般為工業(yè)乙醇),其注入量應(yīng)保證夾持器的下端到液面的距離為75±10mm。

4.3將試樣垂直夾在夾持器上。夾的不宜過緊或過松,以防止試樣變形或脫落。

4.4按下夾持器,開始冷凍試樣,同時啟動時序控制開關(guān)(或按動秒表)計時。試樣冷凍時間規(guī)定為3.0±0.5min。試樣冷凍期間,冷凍介質(zhì)溫度波動不得超過±1℃。

4.5提起升降夾持器,使沖擊器在半秒鐘內(nèi)沖擊試樣。

4.6取下試樣,將試樣按沖擊方向彎曲成180°,仔細觀察有無破壞。

4.7試樣經(jīng)沖擊后(每個試樣只準沖擊一次),如出現(xiàn)破壞時,應(yīng)提高冷凍介質(zhì)的溫度,否則降低其溫度,繼續(xù)進行試驗。

通過反復(fù)試驗,確定至少有兩個試樣不破壞的zui低溫度和至少一個試樣破壞的zui高溫度,如這兩個結(jié)果相差不大于1℃時,即試驗結(jié)束。

五、試驗標準

5.1規(guī)格

    試樣的長為25.0±0.5mm,寬為6.0±0.5mm,厚為2.0±0.3mm。

5.2要求

試樣的表面應(yīng)光滑,無外來雜質(zhì)及損傷。成品應(yīng)經(jīng)打磨后裁制成相應(yīng)尺寸。

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