Lub ntsiab toughening rau PA66 yog cov tsis-polar polyolefins (PP, PE) thiab elastomers (EPDM, POE). PA66 muaj polarity, thiab nws tau ploj compatibility nrog non-ncov qaum cov tshuaj xws li PP thiab PE. PP thiab PE yog unevenly dispersed nyob rau hauv lub cev PA66 / PP thiab PA66 / PE, cov molecules yog agglomerated, lub interface yog tseeb, thiab cov khoom siv yam tsis zoo. Hauv PA66 / EPDM thiab PA66 / POE systems, EPDM thiab POE yuav zom zeem kom tsim cov dawb radicals ntawm high temperature, thiab cov molecules yuav hnov mob sib phim sib txuas nrog macromolecules, ua rau cov neeg ploj tsis haum nruab nrab ntawm lub cim thiab dispersed theem, thiab txom nyem tag nrho cov kev kawm ntawm cov khoom. Cov txiv neej anhydride (MAH) molecule muaj polarity thiab yog ib tug neeg zoo sib xws rau PA66. Lub MAH interface txuas zog yog ib qho loj heev. Toughening agent grafts MAH, uas yuav txhim khu lub polarity ntawm tus neeg txhawb zog thiab cov pab pawg neeg hauv MAH molecule. Ua ke nrog PA66 amide
Muaj tshuaj lom neeg tshwm sim. Qhov sib ntxiv ntawm cov neeg sib koom nrog MAH ua kom lub zog ntawm qhov sib xyaw ua ke, tab sis yog tias tus MAH ntau dhau lawm, nws yuav ua tau tus kheej-polymerize thiab tseem ua rau tus neeg sawv cev ntawm tus neeg ntxias kom khij ntawm lub gel.
