Zimbini iintlobo ze-resis ezisetyenziselwa ukuvelisa iindidi: Thermose kunye ne-thermoplastic. Imivuzo ye-thermoset ibona kakhulu, kodwa i-resistic ifumana inzala evuselelweyo ngenxa yokwanda kokusetyenziswa kwemingxunya.
I-thermoset isebenze ngenxa yenkqubo yonyango, esebenzisa ubushushu ukwenza iipolimes ezinamachaphaza ezinxibelelene okanye ezingenakuthelekiswa nanto ezinokufuduswa. I-thermoplastic iphindaphithiwe, kwelinye icala, ngamasebe okanye amakhonkco amaxhoba ezenza ukuba athambekele kwaye aqinile xa sele epholile, inkqubo eguqulweyo engafuniyo ukunxibelelana kweekhemikhali. Ngamafutshane, ungalilungisa kwaye uhlengahlengise i-thermoplastic resistic, kodwa hayi i-thermose.
Inzala kwiziko le-thermophastic likhula, ngakumbi kumzi-mveliso wemoto.
IINGXAKI ZOKUGQIBELA ZOKUGQIBELA
I-thermoset iphinda isebenze njenge-Epoxy okanye i-polyester ithandwa kakhulu kwimveliso ephantsi ngenxa ye-viscofity ephantsi kunye nokungena ngokugqibeleleyo kwinethiwekhi ye-fiber. Kungoko kunokwenzeka ukusebenzisa iintsinga ezingakumbi kwaye unyuse amandla ezinto ezigqityiweyo.
Isizukulwana sakutsha nje senqwelomoya sibandakanya izinto ezingaphezulu kwe-50 yeepesenti.
Ngexesha lePulrusion, imicu iqhutywa kwi-thermoset resin kwaye yabekwa kubumba obushushu. Lo msebenzi usebenze ngokusabela ngokunyangwa okuguqula ubunzima obuphantsi ukuya kuthi ga kwindawo eqingqiweyo yenethiwekhi eqingqiweyo apho iintsinga zitshixiwe kolu thungelwano lutsha. Kuba uninzi lokuthatha ixesha lokunyanga luxhomekeke kwi-Exother, ezi zinto zisabela ziqhubeka njengamakhonkco, zivumela ukuveliswa kwamandla amakhulu. Nje ukuba i-resin iseti, isakhiwo esinemilinganiselo emithathu sivaliwe iintsinga endaweni kwaye sidlulisele amandla kunye nokuqina kwendlela.
Ixesha lePosi: I-Oct-19 ukuya ku-2002
