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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(yàn)儀是依據(jù)國(guó)家標(biāo)準(zhǔn)GB/T 328.24—2007 mso-hansi-font-family:"Times New Roman"">《建筑防水卷材試驗(yàn)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(shè)計(jì)的。適用于瀝青和高分子屋面防水卷材沖擊穿刺試驗(yàn)。
mso-hansi-font-family:"Times New Roman"">二、防水卷材抗沖擊性能試驗(yàn)機(jī)主要技術(shù)指標(biāo):
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(zhì)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(wú))
4、壓環(huán)尺寸及質(zhì)量:內(nèi)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(yàn)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(gè)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(yàn)在(23 mso-hansi-font-family:"Times New Roman"">±2 "Times New Roman"">)℃進(jìn)行,必要時(shí)采用(-10 "Times New Roman"">±2)℃。對(duì)后面的條件,試件冷凍至(-10 mso-hansi-font-family:"Times New Roman"">±2 "Times New Roman"">)℃。當(dāng)試件從冷凍箱取出,在室溫下應(yīng)在10s "Times New Roman"">內(nèi)試驗(yàn)。
3、每次試驗(yàn)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(chǔ)的不銹鋼板上。
5、落錘當(dāng)釋放時(shí),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(yīng)沖擊壓環(huán)下試件的中心。
7、試驗(yàn)驗(yàn)開(kāi)始用10mm mso-hansi-font-family:"Times New Roman"">直徑的穿刺工具進(jìn)行,當(dāng)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(yàn)。對(duì)沖擊區(qū)域用真空或加壓的方法產(chǎn)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(cè)到空氣氣泡,認(rèn)為試件無(wú)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(gè)試件中至少有4 "Times New Roman"">個(gè)試件無(wú)滲漏。