Lub luag haujlwm ntawm Diethylene Glycol hauv Unsaturated Polyester Resins
Hauv kev tsim cov khoom siv tsis zoo polyester resins, cov khoom siv pabcuam feem ntau tau ntxiv los txhim kho cov khoom ua haujlwm zoo. Ntawm lawv, Diethylene Glycol yog ib qho kev siv ntau ntxiv. Raws li cov organic compound, deg glycol (tshuaj formula C4H10O3) yog xim tsis muaj xim, qab zib - saj kua nplaum uas tuaj yeem yaj hauv dej thiab feem ntau cov kuab tshuaj organic. Hauv kev lag luam,DEG industrial qibcov khoom yog dav siv nyob rau hauv ob qho tib si lub neej txhua hnub thiab industrial ntau lawm. Yog li, dab tsi cuam tshuam ntxiv deg diethylene glycol muaj rau kev ua haujlwm ntawm unsaturated polyester resins?
Mechanism ntawm Kev Ua ntawm Diethylene Glycol
Lub luag haujlwm tseem ceeb ntawm Diethylene Glycol yog hloov lub cev lub cev ntawm cov polymers los ntawm cov saw txuas ntxiv. Qhov no txhim kho polymer yooj, hydroxyl tsis kam, thiab network ntom. Tsis tas li ntawd, cov tshuaj deg tuaj yeem txhawb nqa cov txheej txheem polymerization thaum txo qhov kub ntawm polymerization, ua rau cov tshuaj tiv thaiv yooj yim dua thiab tswj tau. Vim tias ob pawg hydroxyl hauv Diethylene Glycol cov kuab tshuaj tau yooj yim hloov los ntawm cawv -acid reagents, nws tuaj yeem ua tus neeg sawv cev sib txuas, ntxiv txhim kho cov neeg kho tshuab thiab tshuaj tiv thaiv ntawm polymers.
Daim ntawv thov cuam tshuam ntawm Diethylene Glycol
Ntxiv deg glycol rau unsaturated polyester resins feem ntau cuam tshuam rau ob qho tib si lub cev thiab tshuaj lom neeg:
- Lub cev muaj zog: Qhov sib ntxiv ntawmdeg hnyavtxo tensile modulus thiab tensile lub zog, yog li ua kom yooj thiab elongation. Nws kuj tseem txhim kho lub peev xwm nruab nrab thiab inhibits cov tshuaj tiv thaiv dej ntawm epoxies, txhim kho hydrolysis tsis kam thiab corrosion kuj.
- Cov khoom siv tshuaj lom neeg: Kev sib xyaw deg diethylene glycol tuaj yeem txhim kho thermal conductivity, thermal stability, thiab siab -kub tsis kam ntawm polymers. Nws kuj tseem muab cov txiaj ntsig zoo sib xws hauv cov dawb -radical polymerization ntawm epoxy resins.
Scope of Application thiab Dosage
Diethylene Glycol hnyav siv tau rau ntau hom unsaturated resins, xws li polyester, epoxy, imide, thiab ethylene oxide resins. Cov tshuaj ntau npaum li cas yog 0.5-5% hauv unsaturated polyester resins, 0.1-3% hauv epoxy resins, thiab 0.5-10% hauv ethylene oxide resins. Qhov ntau npaum li cas yuav tsum tau txiav txim siab raws li hom resin, xav tau kev ua haujlwm, thiab kev ua haujlwm kom paub meej nws cov txiaj ntsig.
Xaus
Raws li ib qho ntxiv rau unsaturated polyester resins, DEG industrial qib cov ntaub ntawv qhia tau hais tias zoo heev hloov pauv thiab daim ntawv thov muaj peev xwm. Kev tshawb fawb txog nws cov txheej txheem thiab cov txiaj ntsig kev ua tau zoo muab cov kev taw qhia zoo dua rau kev siv hauv kev lag luam. Nyob rau tib lub sijhawm, qhov ntau npaum ntawm Diethylene Glycol yuav tsum tau hloov pauv hloov pauv raws li qhov xav tau tiag tiag kom ua tiav cov txiaj ntsig zoo tshaj plaws.