Dab tsi resins yog siv nyob rau hauv thermoplastic hmoov txheej

Thermoplastic_Resins

Muaj peb lub hauv paus resins siv hauv thermoplastic hmoov txheej, vinyls, nylons thiab polyesters. Cov ntaub ntawv no yog siv rau qee daim ntawv thov kev sib cuag zaub mov, khoom siv hauv chaw ua si, lub laub yuav khoom, tsev kho mob txee thiab lwm yam kev siv.

Ob peb ntawm cov thermoplastics muaj ntau yam zoo li lub zog, kev ua tau zoo thiab kev ruaj ntseg uas yuav tsum tau muaj nyob rau hauv cov ntawv thov uas siv cov hmoov thermoset.

Cov hmoov thermoplastic feem ntau yog cov khoom hnyav molecular uas yuav tsum tau kub siab kom yaj thiab ntws. Lawv feem ntau siv los ntawm fluidized txaj daim ntawv thov thiab cov khoom yog ob qho tib si pre-rhuab thiab tom qab cua sov.

Feem ntau ntawm cov thermoplastic hmoov txheej muaj cov khoom sib nqus adhesion kom lub substrate yuav tsum tau blasted thiab primed ua ntej daim ntawv thov.

Thermoplastic hmoov yog mus tas li fusible. Qhov no txhais tau hais tias, ib zaug rhuab, lawv tuaj yeem rov ua dua thiab rov ua dua tshiab rau hauv cov duab sib txawv raws li tus neeg siv xav tau. Los ntawm qhov sib txawv, cov hmoov thermoset, ib zaug rhuab thiab molded rau hauv cov duab tshwj xeeb, tsis tuaj yeem rov ua dua yam tsis muaj charring lossis tawg. Kev piav qhia tshuaj lom neeg rau tus cwj pwm no yog tias cov molecules hauv cov thermoplastics tsis muaj zog txaus nyiam rau ib leeg thaum nyob rau hauv ib lub thermoset lawv txuas txuas.

Van der Waals rog nyiam thiab tuav cov molecules ua ke. Txij li cov thermoplastics tau piav qhia los ntawm cov tsis muaj zog van der Waals, cov saw hlau molecular uas ua rau cov thermoplastics pab kom lawv nthuav thiab hloov tau. Ntawm qhov tod tes, ib zaug thermosetting hmoov yog rhuab, lawv chemically react, thiab cov tshiab compound tsim yog yus muaj zog van der Waals rog. Es tsis txhob ua cov saw ntev, lawv tsim cov molecules uas yog crystalline nyob rau hauv cov xwm, ua rau cov khoom nyuaj rau recycle los yog rov yaj thaum nws tau kho lawm.

Cov lus raug kaw