1、dWdQdUTdSdQ fdlpdVdWpdVTdSfdldU0dVVTVTlSTlUf,TdSfdldUSTFflFSdTVdpfdlSdTTdSVdppdVdudFTpVuTSHFplpT,VlVlpTVTplVTTflFTTFllS,VlVTTfTluf,)()(VlTf,/）（77%33%11%4%固定拉伸时的张力温度曲线固定拉伸时的张力温度曲线f)(KTVTlu,)(VlTf,)(0TVllSTf,)(dSTdSdQ VTlu,)(VTuluf,)(sVTVlflSTTfT,)()(sufff0222/30223exp23)(hhhhW20223)(*)(ln)(hhkTTFhWkT
2、TCSTuFel123)(2302202202hhNkThhhkTFiiel000/,/,/zzzyyyxxxllllll02020202zyxh2222zyxh3/02020202hzyx000,zzyyxxzyx,022202220222zzyyxxzyx)3(21222zyxelNkTF)32(212NkTFel20,1lNkTlFlFfVTVTelVTel)/1(20kTN)1(00ElllEE)1(3300kTNkTNmixelFFF3/1223/10/mcmzyxVVmcmcelkTNkTF223/222/ln1/21)lnln(212211nnnRTFmix0,1,1mix,1P
3、TelPTPTnFnFnF0)(21()1ln(223/1222222cmcmmmmNB形变形变时间时间交联高聚物交联高聚物理想弹性体理想弹性体理想粘性体理想粘性体线性高聚物线性高聚物Et111E11t2tt22E)1(22teE221tt2t3t3332t1ttteEEt321321)1(3gTT 1gTT 21321fTT gTgTgTgTgTgT1PSF2聚苯醚聚苯醚3PC4改性聚苯醚改性聚苯醚5ABS（耐热）（耐热）6POM7尼龙尼龙8ABS2.01.51.00.5123456 （）78 小时小时 1000 200023时几种高聚物蠕变性能时几种高聚物蠕变性能t/0tegTT gTT
4、gT)(t)(t)(t32)(t回缩曲线回缩曲线拉伸曲线拉伸曲线)2sin(sinsincoscossinsincos)cossinsin(cos)(00000ttttttt)sin()(0ttttsin)(0sin00dtdttdttdtW)()()()(dtttt)cos(sin/2000应力由两部分组成：一部分是与应变同相位的，应力由两部分组成：一部分是与应变同相位的，是弹性形变的动力；另一部分是与应变相差是弹性形变的动力；另一部分是与应变相差90角角的，消耗于克服摩擦阻力。如果定义的，消耗于克服摩擦阻力。如果定义E为同相的为同相的应力和应变的比值而应力和应变的比值而E”为相差为相差90
5、角的应力和应角的应力和应变的振幅的比值即：变的振幅的比值即：sincoscossin)sin()(sin)(0000ttttThenttLetcos00Esin00EtEtEtcossin)(00*iEEE/tanEE)exp()(0tit)(exp)(0tit)exp()/(/*00iEEiE W20E2/122)(*EEEEloglogG logtgloglogG1DE1dtd/粘弹dtddtddtd粘弹弹弹 Edtd粘粘粘弹dtdEdtd1dtdEdtd101dtdEdtEd/0)(tetE/0)(teEtEtiet0)(titieeiEdttd00)()()()11()()()()(1
6、200121212ttiEeeieeEtttitititi11)()()()(*1212iDDDiDiEttttD222222121211111)()()()(*EiEiEiEttttE1tan,1,1222222EEEE2121dtdE)1)()(/teDtDdtEd0)1)()1()(/0tteeEt0dtdE/)0()(tettiet0)(titieieEt00)()()(*iEEiEttE2222111*DiDiED0teEEtt30/2010321)1()(itiieEt/0)(itiieEtE/)(deftEt/0)()()()(fHln)()()(/0/0deHdeHtEttni
7、tiiet)1)()(/nitiieDtD)1()(/ln)1)()1)()(/0/0deLdegtDiittsTasS和式中式中s和和分别分别是指定温度是指定温度Ts和和T时的松弛时间。时的松弛时间。和T时的松弛时间 1 2 3 -2 -1 0 1 2 3 4 5 6 7 8 91T2T3T4T5T6T7T3TElog25-8000TalogT)()(lg21SSTTTCTTCa)(6.101)(86.8lgssTTTTTa)()(0tDt)()(11utDt)()()(110utDtDtniiinnutDutDutDutDt)()()()()(2211duuuutDudutDttt)()()()()(夹具夹具试样试样荷重荷重
