Inkcazo yokuhlelwa kwebakala kwibhodi yokugquma ye-epoxy resin

I-epoxy resins ngokubanzi ibhekisa kwiikhompawundi zepolymer eziqukethe amaqela epoxy amabini nangaphezulu kwimolekyuli. Ngaphandle kwabambalwa, izihlobo zabo zeemolekyuli zazo aziphezulu. Ubume beemolekyuli ze-epoxy resin zibonakaliswa liqela elisebenzayo le-epoxy kwityathanga leemolekyuli. Iqela le-epoxy linokufumaneka ekugqibeleni, embindini okanye kubume bokujikeleza kwetyathanga leemolekyuli. Ngenxa yokuba ulwakhiwo lweemolekyuli luqukethe amaqela epoxy asebenzayo, banokuthi bangene ekuphenduleni okunxibelelanisa kunye neendidi ezahlukeneyo zokunyanga iiarhente zokwenza iipolymers ezingenakunyibilika kunye ezingafakwanga ezinendlela ezintathu zenethiwekhi.

Iimpawu zesicelo se-epoxy resin board

1. Iifom ezahlukeneyo. Ii-resins ezahlukeneyo, iiarhente zokunyanga, kunye neenkqubo zokuguqula zinokuphantse zilungelelane neemfuno zezicelo ezahlukeneyo kwifom, kwaye uluhlu lunokuvela kwi-viscosity esezantsi kakhulu ukuya kwindawo ephezulu yokunyibilika.

2. Ukunyanga okufanelekileyo. Khetha iindidi zeearhente ezahlukeneyo zokuphilisa, inkqubo ye-epoxy resin inokuphiliswa kwinqanaba lobushushu le-0 ~ 180 ℃.

3. Ukunamathela okunamandla. Amaqela e-polar hydroxyl kunye ne-ether bond kwi-molecular chain ye-epoxy resins yenza ukuba inamathele kakhulu kwizinto ezahlukeneyo. Ukuncipha kwe-epoxy resin kusezantsi xa unyanga, kwaye uxinzelelo lwangaphakathi oluvelisiweyo lincinci, olunceda ukuphucula amandla okubambelela.

4. Ukuncipha okuphantsi. Impendulo phakathi kwe-epoxy resin kunye ne-arhente yokuphilisa esetyenziswayo yenziwa ngokudibanisa ngokuthe ngqo okanye ukuvulwa kwendandatho yokuphendula kwamaqela epoxy kwimolekyuli ye-resin, kwaye akukho manzi okanye ezinye iimveliso ezivelayo. Xa kuthelekiswa nentlaka ye-polyester engafakwanga kunye ne-phenolic resins, zibonisa ukuncipha okuphantsi kakhulu (ngaphantsi kwe-2%) ngexesha lokunyanga.

5. Iipropati zoomatshini. Inkqubo ye-epoxy resin ephilisiweyo ineempawu ezintle kakhulu zoomatshini.

6. Ukusebenza kombane. Inkqubo ye-epoxy resin ephilisiweyo yinto ebambekayo yokubambelela eneempawu eziphezulu ze-dielectric, ukumelana nokuvuza komhlaba kunye nokumelana ne-arc.

7. Ukuzinza kwemichiza. Ngokubanzi, inkqubo ye-epoxy resin ephilisiweyo inokumelana nealkali, ukumelana neasidi kunye nokumelana nesinyibilikisi. Njengezinye iipropathi zenkqubo ye-epoxy yonyango, uzinzo lweekhemikhali luxhomekeke kwi-resin ekhethiweyo kunye nakwiarhente yokunyanga. Ukukhetha ngokufanelekileyo i-epoxy resin kunye ne-arhente yokuphilisa kunokuyenza ibe nozinzo olukhethekileyo lweekhemikhali.

8. Uzinzo lwendalo. Indibaniselwano yeepropati ezingentla inika inkqubo ye-epoxy resin yokuma okuzinzileyo kunye nokuqina.

9. Ukumelana nokubumba. Inkqubo ye-epoxy resin enyangiweyo ayinyangeki kwinkoliso yomngundo kwaye inokusetyenziswa kwimo yetropiki enzima.

Uhlobo lokwahlulahlula

Ngokwakhiwo lweemolekyuli, ii-epoxy resins zingahlulwahlulwa ngokwamacandelo amahlanu:

1. Intlaka yeGlycidyl ether epoxy

2. Glycidyl ester epoxy nentlaka

3. Intlabathi yeGlycidylamine epoxy

4. Linear aliphatic epoxy resin

5. I-Alicyclic epoxy resin