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公司基本資料信息
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mso-hansi-font-family:"Times New Roman"">一、概述:
mso-hansi-font-family:"Times New Roman"">抗沖擊性能試驗儀是依據(jù)國家標準GB/T 328.24—2007 mso-hansi-font-family:"Times New Roman"">《建筑防水卷材試驗方法》“第24 "Times New Roman"">部分:瀝青和高分子防水卷材抗沖擊性能”而設計的。適用于瀝青和高分子屋面防水卷材沖擊穿刺試驗。
mso-hansi-font-family:"Times New Roman"">二、防水卷材抗沖擊性能試驗機主要技術指標:
1、落錘垂直下落高度:(600 mso-hansi-font-family:"Times New Roman"">±5 "Times New Roman"">)mm
2、落錘組件質量:(1000 mso-hansi-font-family:"Times New Roman"">±10 "Times New Roman"">)g
3、穿刺工具直徑(及配重環(huán)):Φ10mm mso-hansi-font-family:"Times New Roman"">(厚7.5mm "Times New Roman"">配重環(huán))、
mso-hansi-font-family:"Times New Roman""> Φ20mm mso-hansi-font-family:"Times New Roman"">(厚6mm "Times New Roman"">配重環(huán))、
mso-hansi-font-family:"Times New Roman""> Φ30mm mso-hansi-font-family:"Times New Roman"">(厚4mm "Times New Roman"">配重環(huán))、
mso-hansi-font-family:"Times New Roman""> Φ40mm mso-hansi-font-family:"Times New Roman"">(無)
4、壓環(huán)尺寸及質量:內圓直徑Φ200mm mso-hansi-font-family:"Times New Roman"">、(5000 "Times New Roman"">±50)g
5、不銹鋼板尺寸: 300 mso-hansi-font-family:"Times New Roman"">×300 "Times New Roman"">×10mm
6、聚苯乙烯板尺寸:300 mso-hansi-font-family:"Times New Roman"">×300 "Times New Roman"">×50mm
mso-hansi-font-family:"Times New Roman"">三、試驗步驟:
1、從卷材寬度方向距邊緣100mm mso-hansi-font-family:"Times New Roman"">外裁取至少約300mm*300*mm "Times New Roman"">的10個試件,試件在規(guī)定的條件下至少放置24h mso-hansi-font-family:"Times New Roman"">。
2、試驗在(23 mso-hansi-font-family:"Times New Roman"">±2 "Times New Roman"">)℃進行,必要時采用(-10 "Times New Roman"">±2)℃。對后面的條件,試件冷凍至(-10 mso-hansi-font-family:"Times New Roman"">±2 "Times New Roman"">)℃。當試件從冷凍箱取出,在室溫下應在10s "Times New Roman"">內試驗。
3、每次試驗采用新的試件和新的聚苯乙烯板。
4、試件平放在絕熱材料上,上表面朝上,并用壓環(huán)壓住,聚苯乙烯板放在混凝土基礎的不銹鋼板上。
5、落錘當釋放時,能從距試件上表面垂直高度(600 mso-hansi-font-family:"Times New Roman"">±5 "Times New Roman"">)mm的位置自由下落。
6、穿刺工具應沖擊壓環(huán)下試件的中心。
7、試驗驗開始用10mm mso-hansi-font-family:"Times New Roman"">直徑的穿刺工具進行,當試件被穿刺后,用更大直徑的,如此一直到40mm mso-hansi-font-family:"Times New Roman"">直徑的穿刺工具。
8、檢查試件是否被擊穿,用肥皂溶液涂沖擊區(qū)域的表面,隔5min-10min試驗。對沖擊區(qū)域用真空或加壓的方法產生15KPa mso-hansi-font-family:"Times New Roman"">的壓差,上表面在低壓力的一面。若60s mso-hansi-font-family:"Times New Roman"">后未觀測到空氣氣泡,認為試件無滲漏和穿孔。
9、抗沖擊用穿刺工具的直徑表示,防水卷材5 mso-hansi-font-family:"Times New Roman"">個試件中至少有4 "Times New Roman"">個試件無滲漏。