浇注聚氨酯弹性体制品生产中的气泡问题-秦志燕

《》19952(,210024),,,,。,。,,。。1?,,,,。,,,,,,,。,,,,,,,。,,,,,。0.1nm,10nm,L`。,,,、,。,。〔’·2,,,,。,、,,,,,。,、、、、、、、、。,。22.1。,。,,。,,,。,,,,。,。。,《》19952。2.2,,。,,,。,,,,,,,24,,,。,。、,。2.3,,,。,、,,,`。,,1。{}2.4PU,、、。,,。。。。,,,,,,,,。。。,。31,。,,。,PU,,,。3.1t,,。,。,,,,,,,。,,,。3.2,。,,85~95`C。,,,,,,,《》19952,90C,,,。,,2。-llllllll……(((J、、、lllllll:44444llllllllllll!!!!!}}}}}....JJJJJ〕〕}}}:::〕〕,’’}}}:::J〔』』』』~~~2,,,,,。,。,。3.3、、PU,,1,4;,(MOCA)。1,4,,。,,。,,。3.435,,,。,,。,。,,;,;,,。,。,、,,,MDI,MDI“”,,,。3.5PU,,,,,。。,,,,,。,,,,,,,。。,,JSPC1,。,,。,(SH),。,,,。(40)《》199521.4PTMG、PPGPTMGPPGTDINCO/OH0.99,25,PVC2。PBA。101(PvcpVc)8462\00020800ǎd64060ǎnU8q4nU00“{`pVC”Vc,Z4r、、、!、、、}PBAPCL3PBA、PCLPTMG100806040200I〕PG020406080.L()()2PTMG、PPG2PTMG、PPGPTMGPPG。TDI,PTMGPVC4.4kN/m;PPGPVC,PTMGPPG,PPG,。1.5pBA、。(PCL)2000PBA2000PCIJ,NCO/OH0.99TDI,PVC3。3,PVC。PBAPUskN/m,TCIJPUgkN/m,PCIJPVC2PBA1.4,,CCCC;PTMG,,CCCC0,;,,。PEA、PPG,4,。PBAPCL,)4,PVC。,。()(38)4PU,PU,,,,,,。1GentANandTompkinsDA.JPolymsci,A21969,7:14842HainesWM.Elastomeries,1978,100(9):303ErieASheard.Elastomeries,1990.112(10):49