Puas yog melamine yog cross-linked polymer?
Puas yog melamine yog cross-linked polymer?

Video: Puas yog melamine yog cross-linked polymer?

Video: Puas yog melamine yog cross-linked polymer?
Video: Cross linked Polymers Experiment 2024, Tej zaum
Anonim

Melamine -raws li cov ntaub ntawv thermoset muaj ntoo khaub lig - txuas polymers , uas ua rau cov pwm ruaj khov thiab ruaj khov.

Nyob rau hauv kev hwm rau qhov no, uas yog ib tug crosslinked polymer?

Hla - txuas yog ib daim ntawv cog lus uas txuas ib qho polymer saw mus rau lwm tus polymer saw hlau. Yog li ntoo khaub lig - txuas polymers yog polymers uas tau thaum ntoo khaub lig - txuas daim ntawv cog lus tsim ntawm monomeric units. Cov ntoo khaub lig - txuas polymer cov ntawv ntev chains, txawm branched los yog linear, uas tuaj yeem tsim covalent bonds ntawm cov polymer molecules.

Ib yam li ntawd, hom polymer yog melamine li cas? Melamine formaldehyde (tseem hu ua melamine lossis MF) yog ib qho nyuaj, ruaj khov, thiab ntau yam thermosetting aminoplast1 nrog hluav taws zoo thiab kub ua hauj. Nws yog tsim los ntawm melamine thiab formaldehyde los ntawm condensation ntawm ob monomers.

Tsis tas li ntawd, puas yog PVC ib qho kev sib txuas ntawm polymer?

Polymer ; PVC ; Kev sib txuas; Grafting; FT-IR; Thermal stability. Poly (vinyl chloride) i.e. PVC yog ib qho ntawm cov khoom siv ntau yam polymers & dav siv thermoplastic vinyl polymer . Nyob rau hauv cov nqe lus ntawm cov nyiaj tau los generated, PVC yog ib qho ntawm cov khoom tseem ceeb tshaj plaws ntawm kev lag luam tshuaj.

Dab tsi yog cross linked polymers muab ob qho piv txwv?

Piv txwv ntawm crosslinked polymers muaj xws li: Polyester fiberglass, polyurethanes siv los ua txheej, nplaum, roj hmab vulcanized, epoxy resins thiab ntau ntxiv.

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