ua kom tawv
cov yam ntxwv tshuaj lom neeg
Cov tshuaj nplaum tawv yog ib yam khoom uas ua rau cov zaj duab xis nplaum yooj ywm dua. Qee cov tshuaj nplaum thermosetting resin, xws li epoxy resin, phenolic resin thiab unsaturated polyester resin adhesives tom qab kho, nws tsis yooj yim elongation, yooj yim tawg, thiab yooj yim nthuav dav thaum lub zog sab nraud los sib txuas, ua rau tawg, thiab tsis yooj yim qaug zog, siv tsis tau los ua cov khoom sib txuas. Yog li ntawd, nws yog ib qho tsim nyog los txo qhov brittleness, ua kom muaj zog thiab txhim kho lub zog ntawm cov kabmob. Cov khoom siv uas ua rau txo qhov brittleness thiab ua rau muaj zog ntxiv yam tsis cuam tshuam rau lwm yam khoom tseem ceeb ntawm cov nplaum yog cov tshuaj nplaum tawv. Nws muaj peev xwm muab faib ua cov roj hmab tawv thiab cov thermoplastic elastomer tawv.
Kev taw qhia txog khoom thiab nta
(1) Cov roj hmab toughening agent no hom toughening agent feem ntau suav nrog kua polysulfide roj hmab, kua acrylic roj hmab, kua polybutadiene roj hmab, nitrile roj hmab, ethylene propylene roj hmab thiab styrene butadiene roj hmab, thiab lwm yam.
(2) thermoplastic elastomer Thermoplastic elastomer yog ib hom khoom siv hluavtaws uas qhia txog roj hmab elasticity ntawm chav tsev kub thiab tuaj yeem ua yas ntawm qhov kub siab. Yog li ntawd, hom polymer no muaj cov yam ntxwv ntawm ob qho tib si roj hmab thiab thermoplastic, nws tuaj yeem siv ua tus neeg sawv cev toughening ntawm cov ntaub ntawv sib xyaw, thiab tuaj yeem siv ua cov khoom siv matrix ntawm cov ntaub ntawv sib xyaw. Hom khoom siv no feem ntau suav nrog polyurethane, styrene, polyolefin, polyester, interregular 1, 2-polybutadiene thiab polyamides thiab lwm yam khoom, tam sim no ua tus neeg sawv cev toughening ntawm cov ntaub ntawv sib xyaw siv ntau styrene thiab polyolefin.
(3) Lwm cov neeg sawv cev tawv Lwm cov neeg sawv cev tawv uas tsim nyog rau cov khoom sib xyaw yog cov polyamides uas tsis muaj molecular hnyav thiab cov neeg sawv cev tawv uas tsis muaj molecular hnyav, xws li phthalate esters. Tus neeg sawv cev tawv uas tsis muaj zog kuj tseem hu ua plasticizer, uas tsis koom nrog hauv kev kho cov tshuaj resin.
siv
Tus neeg sawv cev toughening no yog tsim rau cov nplaum, roj hmab, txheej thiab lwm yam khoom. Nws yog ib hom neeg sawv cev pabcuam uas tuaj yeem txo qhov brittleness ntawm cov khoom sib xyaw thiab txhim kho qhov cuam tshuam ntawm cov khoom sib xyaw. Nws tuaj yeem muab faib ua tus neeg sawv cev toughening nquag thiab tus neeg sawv cev toughening tsis nquag. Tus neeg sawv cev toughening nquag yog hais txog nws cov saw molecular uas muaj cov pab pawg nquag uas tuaj yeem cuam tshuam nrog matrix resin, uas tuaj yeem tsim cov qauv network, ntxiv ib feem ntawm cov saw hlau yooj ywm, thiab yog li txhim kho qhov cuam tshuam ntawm cov khoom sib xyaw. Tus neeg sawv cev toughening tsis nquag yog ib hom neeg sawv cev toughening uas yaj tau nrog matrix resin tab sis tsis koom nrog hauv kev tshuaj lom neeg.
pob khoom thiab kev thauj mus los
B. Cov khoom no siv tau,,25KG, BAERRLS。
C. Khaws cia rau hauv qhov chaw txias, qhuav thiab muaj cua nkag hauv tsev. Yuav tsum kaw cov thawv kom nruj tom qab siv txhua zaus ua ntej siv.
D. Cov khoom no yuav tsum tau kaw zoo thaum lub sijhawm thauj mus los kom tiv thaiv cov dej noo, alkali thiab acid muaj zog, nag thiab lwm yam tsis huv los ntawm kev sib tov.
