產品介紹

DIN 53424泡沫壓縮彎曲應力實驗儀

6、溫度(du)測量精度(du)：0.1℃

7、變(bian)形測量精度：0.002mm

8、試(shi)樣尺寸(cun)：50*50*50mm/40*40*20mm

9、壓盤直徑： 50mm*50mm形狀三支

10、試驗推(tui)薦負荷：0-1MPa

11、試(shi)(shi)驗起始溫(wen)度：30±10℃、試(shi)(shi)驗終止(zhi)溫(wen)度300℃

12、爐內尺寸：350 ×400×400mm

DIN 53424泡沫壓縮彎曲應力實驗儀

對于防靜(jing)電(dian)(dian)(dian)(dian)(dian)鞋類試(shi)驗，施加(jia)直(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)壓應不少于200V。注(zhu)：由封入潮濕填料的(de)(de)(de)(de)(de)金(jin)屬電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)組(zu)成的(de)(de)(de)(de)(de)組(zu)合電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji),可(ke)以被(bei)用來代(dai)替內液體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)/金(jin)屬板系統。在(zai)(zai)(zai)一(yi)給(gei)定(ding)(ding)的(de)(de)(de)(de)(de)通(tong)電(dian)(dian)(dian)(dian)(dian)時間(jian)之(zhi)后,施加(jia)于與一(yi)塊材料的(de)(de)(de)(de)(de)相對兩(liang)個(ge)面(mian)(mian)(mian)上(shang)(shang)相接觸的(de)(de)(de)(de)(de)兩(liang)個(ge)引(yin)入電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)之(zhi)間(jian)的(de)(de)(de)(de)(de)直(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)壓對于該兩(liang)個(ge)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)之(zhi)間(jian)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)(de)(de)(de)(de)比值，在(zai)(zai)(zai)該兩(liang)個(ge)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang)可(ke)能的(de)(de)(de)(de)(de)極(ji)(ji)(ji)化(hua)現(xian)象(xiang)忽(hu)略不計。注(zhu)：除非另(ling)有規定(ding)(ding)，體(ti)(ti)積電(dian)(dian)(dian)(dian)(dian)阻是在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)化(hua)1min后測定(ding)(ding)。沿試(shi)樣體(ti)(ti)積電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)方向的(de)(de)(de)(de)(de)直(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)場強度(du)與穩(wen)態電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)密度(du)的(de)(de)(de)(de)(de)比值。在(zai)(zai)(zai)一(yi)給(gei)定(ding)(ding)的(de)(de)(de)(de)(de)通(tong)電(dian)(dian)(dian)(dian)(dian)時間(jian)之(zhi)后,施加(jia)于材料表(biao)面(mian)(mian)(mian)上(shang)(shang)的(de)(de)(de)(de)(de)標準電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)之(zhi)間(jian)的(de)(de)(de)(de)(de)直(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)壓對于電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)之(zhi)間(jian)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)(de)(de)(de)(de)比值，在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)上(shang)(shang)可(ke)能的(de)(de)(de)(de)(de)極(ji)(ji)(ji)化(hua)現(xian)象(xiang)忽(hu)略不計。注(zhu)除非另(ling)有規定(ding)(ding)，表(biao)面(mian)(mian)(mian)電(dian)(dian)(dian)(dian)(dian)阻是在(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)化(hua)1min后測定(ding)(ding)。注(zhu)通(tong)常電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)主要流(liu)(liu)(liu)(liu)過(guo)試(shi)樣的(de)(de)(de)(de)(de)一(yi)個(ge)表(biao)面(mian)(mian)(mian)層,但也包括流(liu)(liu)(liu)(liu)過(guo)試(shi)樣體(ti)(ti)積內的(de)(de)(de)(de)(de)成分(fen)。

沿試(shi)樣表面電流(liu)(liu)方向的(de)直流(liu)(liu)電場強度(du)與單位長度(du)的(de)表面傳導電流(liu)(liu)之(zhi)比。電極是(shi)(shi)具(ju)有一(yi)(yi)定形狀、尺寸和(he)結構的(de)與被測試(shi)樣相接(jie)觸的(de)導體。當一(yi)(yi)直流(liu)(liu)電壓加在與試(shi)樣相接(jie)觸的(de)兩電極之(zhi)間時，通(tong)過(guo)試(shi)樣的(de)電流(liu)(liu)會漸近地減小(xiao)到(dao)(dao)一(yi)(yi)個(ge)穩定值。電流(liu)(liu)隨時間的(de)減小(xiao)可能是(shi)(shi)由于(yu)電介質極化(hua)和(he)可動離子位移到(dao)(dao)電極所(suo)致。對于(yu)體積電阻率小(xiao)于(yu)10"Q•m的(de)材料，其穩定狀態通(tong)常在1min內達到(dao)(dao)，因此，經(jing)過(guo)這個(ge)電化(hua)時間后測定電阻。