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橡胶海绵的各项性能参数检测方法和依据

2014/3/24 22:25:26 点击:
橡胶海绵各项性能参数检测方法和依据"
"一,取样方法:熟化72小时后"
"二,状态调节:"," 参照国标GB2918"
"1.调节环境:23℃±2℃ 相对湿度:45%-55%"
"2.调节时间: 16H"
"3.调节设备: 空调.抽湿机.放湿机."
"三.表观密度测定:","参照国标GB6343-86"
"ISO845-1977","1.试样尺寸:100mm×100mm×50mm ,与所用仪器及材料的原始形状相符. "
,"2.尺寸精度:小于10mm,±0.05mm;10-100mm,±0.1mm;大于100mm,±0.5mm"
," 3.称量试样,精确到试样质量的0.5%."
," 4.测试设备:钢尺.精密电子称."
" 5.表观密度=106×m/v,m是试样质量g,v是试样的体积mm3.",,,,,,,"物理性能"
"四.拉伸强度和断裂伸长率的测定",,,"参照国标GB6344-86"
"ISO1798-1983",,"1.试样尺寸:长=152mm 宽=13mm 厚=10-15mm."
,,"2.有效标距50mm,速度500mm/min."
,,"3.测试设备:微机控制电子万能试验机."
,,,,,,,"机械性能"
"五.压缩永久变形的测定:",,"参照国标GB6669-86"
"ISO1856-1980",,"1.试样:50×50×25mm (±1mm)",,,,"至少5块"
,,"2.玻璃片边长50-55mm 厚度1.0-1.5mm",,,,"压缩量50% 75% 90%"
"3.试验温度:70±1℃ ",,"维持时间:22H 72H 试验后30min 测试最终厚度dr ."
"4.压缩永久变形P=(d0-dr)/d0×100"
"5.测试设备:恒温恒湿机.玻璃夹具.",,,,,,,"机械性能"
"六.回弹性测定:","参照国标GB6670-86"
,"1.钢球落下高度460mm(指钢球底部至试样表面)",,,,,,," "
,"2.钢球直径16+0-0.15mm,重16.7+0-0.5g"
" 3. 试样:长100mm 宽100mm 高50+20mm",,,,,"至少3块."
,"4.回弹率R=H/H0×100,H钢球回弹高度mm,H0钢球落下高度mm."
" ","5.测试设备:落球回弹测试仪.",,,,,,"机械性能"
"七.撕裂强度测定:","参照国标GB10808-89"
,"1.试样长150±1mm,宽25±0.5mm,厚度25±0.5mm,一端40±0.5mm的切口."
,"2.速度20-50mm/min,用刀片切割试样,保持撕裂至少50mm,记录最大力值."
,"3.撕裂强度=F/T F是测得最大力值,T是试样的平均厚度. "
,"4.测试设备:微机控制电子万能试验机.",,,,,,"机械性能"
"八.压陷性能:","参照国标GB10807-89"
"ISO2439-1980","1.试样尺寸边长380+20-0,厚度50±2mm,速度100±20mm/min."
,"2.测力精度±1%或1N(视大的定),压缩量精度±0.25mm."
,"3.支撑板开孔6mm,孔间距20mm,压头200+30mm."
,"4.重复试验至少要有16小时的恢复期."
,"5.测试设备:微机控制电子万能试验机.",,,,,,"机械性能"